Proxim Wireless U53-45 UNII Radio User Manual 3 1 Shipping Container

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INSTALLATION AND
MAINTENANCE MANUAL
DS-3 (45 Mbps), wayside T1
LICENSE-FREE RADIOS
5.3/5.8 GHz (U-NII, LE-LAN)
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
Installation and Maintenance Manual
Copyright (c) 2001 by Western Multiplex Corporation. All rights reserved. No part of this
manual may be reproduced without prior written permission from Western Multiplex.
The information contained in this manual is subject to change without notice. Western
Multiplex shall not be liable for errors contained herein or for incidental or consequential
damages in connection with the furnishing, performance, or use of this manual or equipment
supplied with this manual. Western Multiplex makes no warranty of any kind with regard to
this manual or any equipment supplied with this manual, including, but not limited to, the
implied warranties of merchantability and fitness for a particular purpose.
Heliax is a registered product of Andrews Corporation.
Fireberd is a registered product of Telecommunications Techniques Corporation.
Printed in the United States of America
Notice: Y2K (Year 2000 Issue)
All software supplied by and for Western Multiplex products adheres to the four-(4) digit
year nomenclature as required for Year 2000 compliance.
Western Multiplex Corporation
1196 Borregas Avenue
Sunnyvale, CA 94089-1302
TEL : (408) 542-5200
FAX : (408) 542-5300
P/N: MAN-27701
Issue: January 2001
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
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ii
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
Regulatory Notice
This equipment has been tested and found to comply with the limits for a class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
Consult the dealer or an experienced radio/TV technician for help.
Shielded cables and I/O cords must be used for this equipment to comply with the relevant FCC
regulations.
Changes or modifications not expressly approved in writing by Western Multiplex may void the user's
authority to operate this equipment.
This device complies with RSS-210 and/or RSS-139 of Industry Canada. Operation is subject to the
following two conditions: (1) this device may not cause interference, and (2) this device must accept
any interference, including interference that may cause undesired operation of the device.
This device is intended to be installed by qualified professional personnel.
iii
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
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iv
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
WARRANTY
3.1
Western Multiplex may immediately terminate this Warranty and all
of its performance under this Warranty, upon notification to the
Customer, if the Customer:
(a) makes any unauthorized modifications to the Equipment;
(b) assigns or transfers the Customer's rights or obligations under
this Warranty without the written consent of Western Multiplex;
(c) becomes bankrupt or insolvent, or is put into receivership; or
(d) has not paid Western Multiplex all amounts for the Equipment,
services, or other additional charges within thirty (30) days of
receipt of written notice from Western Multiplex.
3.2 If this Warranty is terminated by Western Multiplex, the Customer
shall remain liable for all amounts due to Western Multiplex.
FORCE MAJEURE
4.1 "Force Majeure" has the same meaning as defined in Western
Multiplex's Conditions of Sale (Western Multiplex document
number CS96-8).
4.2 Western Multiplex shall not be responsible for failure to discharge
its obligations under this Warranty due to Force Majeure.
LIMITATIONS AND QUALIFICATIONS OF WARRANTY
5.1 This Warranty does not apply to any damage, defect or failure
caused by:
(a) any part of the Equipment having been modified, adapted,
repaired, or improperly installed, operated, maintained, transported
or relocated by any person other than Western Multiplex personnel
or a Western Multiplex authorized service agent, without Western
Multiplex's prior written consent;
(b) storage or environmental conditions which do not conform to the
applicable sections of the appropriate Western Multiplex
Equipment Manual;
(c) failure to conform with the Equipment Installation, Operating and
Maintenance Instructions of the appropriate Western Multiplex
Equipment Manual;
(d) external causes, including external electrical stress or lightning, or
use in conjunction with incompatible equipment, unless such use
was with Western's prior written consent;
(e) cosmetic damage;
(f)
accidental damage, negligence, neglect, mishandling, abuse or
misuse, other than by Western Multiplex personnel or a Western
Multiplex authorized service agent; or
(g) Force Majeure.
GENERAL TERMS
1.1 All Definitions contained in Western Multiplex's Conditions of Sale
(Western Multiplex document number CS96-8), apply to the
Warranty.
1.2 Subject to the provisions of the Warranty, Western Multiplex
warrants that the equipment described in Paragraph 1.3 shall
conform to their specifications described in Paragraph 1.4 in all
material respects and that the equipment shall be free from
material defects in materials and workmanship.
1.3 This Warranty applies to all original purchases of Western
manufactured equipment and accessories (collectively the
"Equipment").
1.4 This Warranty applies to the specifications contained in the most
recent version of the manual for the model of the Equipment
purchased (the "Specifications").
1.5 This Warranty does not apply to the following items of Equipment
which are covered by the Original Equipment Manufacturer's
warranty:
(a) antenna systems, including coax cable, waveguide, connectors
flex-sections, mounts, other parts of the antenna system and
installation materials;
(b) non-Western manufactured rack mounted equipment that is
assembled wired and tested at Western's factory or supplied as
part of a system, including orderwire items, channel banks,
multiplexers, fuse/alarm panels, remote alarm items; and
(c) equipment which is not listed in Western Multiplex's price book.
1.6 The effective period of this Warranty shall start on the date of
shipment of the Equipment and shall end:
(a) for all unlicensed radio products and for all licensed digital
microwave radio products, two (2) years later;
(b) for all analog microwave radio products, three (3) years later; or
(c) for all baseband products, five (5) years later (in each case the
"Warranty Period").
1.7 The Customer acknowledges that Western does not represent or
warrant that the services provided by Western under this Warranty
will ensure uninterrupted or error-free operation of the Equipment.
RETURN OF EQUIPMENT UNDER WARRANTY
2.1 If an item of Equipment malfunctions or fails in normal intended
usage and maintenance within the applicable Warranty Period:
(a) the Customer shall promptly notify Western Multiplex of the
problem and the serial number of the defective item;
(b) Western Multiplex shall, at its sole option, either resolve the
problem over the telephone or provide the Customer with a
Returned Materials Authorization number (RMA #) and the
address of the location to which the Customer may ship the
defective item;
(c) if the problem is not resolved over the telephone, the Customer
shall attach a label to each Returned item describing the fault
and the Customer's Return address. The Customer shall, at its
cost, properly pack the item to be Returned, prepay the
insurance and shipping charges, and ship the item to the
specified location;
(d) if the Western Multiplex product shall prove to be defective in
material or workmanship upon examination by Western
Multiplex, Western Multiplex shall either repair or replace the
Returned item at its sole option. The replacement item may be
new or refurbished; if refurbished, it shall be equivalent in
operation to new Equipment. If a Returned item is replaced by
Western Multiplex, the Customer agrees that the Returned item
shall become the property of Western Multiplex.
(e) Western Multiplex shall at its cost, ship the repaired item or
replacement to any destination within the United States of
America by carrier and method of delivery chosen by Western
Multiplex. If the Customer has requested some other form of
conveyance, such as express shipping, or is located beyond the
USA borders, then the Customer shall pay to the cost of return
shipment.
2.2 Equipment which is repaired or replaced by Western Multiplex
under this Warranty shall be covered under all of the provisions of
this Warranty for the remainder of the applicable Warranty Period
or ninety (90) days from the date of shipment of the repaired item
or replacement, whichever period is longer.
Please see reverse side for additional limitations on damages.
DEFAULT AND TERMINATION
W/CS97-1
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
LIMITATIONS ON DAMAGES (North America)
6.1 THE WARRANTY STATED IN THIS DOCUMENT IS
THE CUSTOMER'S EXCLUSIVE WARRANTY FOR THE
EQUIPMENT; WESTERN MULTIPLEX SPECIFICALLY
DISCLAIMS ALL OTHER WARRANTIES OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING ANY
WARRANTIES OF FITNESS FOR A PARTICULAR
PURPOSE AND OF MERCHANTABILITY.
6.2 WESTERN MULTIPLEX SHALL NOT BE LIABLE IN
TORT, INCLUDING LIABILITY IN NEGLIGENCE OR
STRICT LIABILITY, AND SHALL HAVE NO LIABILITY
AT ALL FOR INJURY TO PERSONS OR PROPERTY.
WESTERN MULTIPLEX'S LIABILITY FOR FAILURE TO
FULFIL ITS OBLIGATIONS UNDER THIS WARRANTY
OR ANY OTHER LIABILITY UNDER OR IN
CONNECTION WITH THE EQUIPMENT SHALL BE
LIMITED TO THE AMOUNT OF THE PURCHASE
PRICE OF THE EQUIPMENT. THE REMEDIES
STATED IN THIS WARRANTY ARE THE CUSTOMER'S
EXCLUSIVE REMEDIES AGAINST WESTERN
MULTIPLEX REGARDING THE EQUIPMENT.
6.3 EVEN IF WESTERN MULTIPLEX HAS BEEN ADVISED
OF THE POSSIBILITY OF THEM, WESTERN
MULTIPLEX SHALL NOT BE LIABLE FOR ANY
INDIRECT, INCIDENTAL, SPECIAL OR
CONSEQUENTIAL DAMAGES, INCLUDING THE COST
OF LABOR BY THE CUSTOMER'S OWN EMPLOYEES,
AGENTS OR CONTRACTORS IN IDENTIFYING,
REMOVING OR REPLACING THE DEFECTIVE ITEM;
LOST PROFITS, AND REVENUES; FAILURE TO
REALIZE EXPECTED SAVINGS; ANY CLAIM AGAINST
A CUSTOMER BY A THIRD PARTY; OR ANY OTHER
COMMERCIAL OR ECONOMIC LOSSES OF ANY
KIND.
6.4 THESE LIMITATIONS AND DISCLAIMERS ARE NOT
MADE BY WESTERN MULTIPLEX WHERE
PROHIBITED BY LAW.
W/CS97-1
LIMITATIONS ON DAMAGES (International)
6.1 THE WARRANTY STATED IN THIS DOCUMENT IS
THE CUSTOMER'S EXCLUSIVE WARRANTY FOR THE
EQUIPMENT; ALL OTHER WARRANTIES OF ANY
KIND, EXPRESS OR IMPLIED, INCLUDING ANY
WARRANTIES OF FITNESS FOR A PARTICULAR
PURPOSE AND OF MERCHANTABILITY ARE
EXCLUDED TO THE FULLEST EXTENT PERMITTED
BY LAW.
6.2 WESTERN MULTIPLEX 'S LIABILITY FOR FAILURE TO
FULFIL ITS OBLIGATIONS UNDER THIS WARRANTY
OR IN TORT OR AS A RESULT OF STRICT LIABILITY
OR ANY OTHER LIABILITY UNDER OR IN
CONNECTION WITH THE EQUIPMENT OR ITS
SUPPLY SHALL BE LIMITED, EXCEPT IN RESPECT
OF DEATH AND PERSONAL INJURY CAUSED BY
WESTERN MULTIPLEX'S NEGLIGENCE, TO THE
AMOUNT OF THE PURCHASE PRICE OF THE
EQUIPMENT. THE REMEDIES STATED IN THIS
WARRANTY ARE THE CUSTOMER'S EXCLUSIVE
REMEDIES AGAINST WESTERN MULTIPLEX
REGARDING THE EQUIPMENT.
6.3 EVEN IF WESTERN MULTIPLEX HAS BEEN ADVISED
OF THE POSSIBILITY OF THEM, WESTERN
MULTIPLEX SHALL NOT BE LIABLE FOR ANY
INDIRECT, INCIDENTAL, SPECIAL OR
CONSEQUENTIAL DAMAGES, INCLUDING THE COST
OF LABOR BY THE CUSTOMER'S OWN EMPLOYEES,
AGENTS OR CONTRACTORS IN IDENTIFYING,
REMOVING OR REPLACING THE DEFECTIVE ITEM;
LOST PROFITS, AND REVENUES; FAILURE TO
REALIZE EXPECTED SAVINGS; ANY CLAIM AGAINST
A CUSTOMER BY A THIRD PARTY; OR ANY OTHER
COMMERCIAL OR ECONOMIC LOSSES OF ANY
KIND.
vi
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
CONDITIONS OF SALE
TERMS OF PAYMENT
5.1 The Customer shall pay for all Equipment, including shipping and
insurance in accordance with the terms of the Invoice.
5.2 All Invoices for North American Customers are due and payable in
thirty (30) days from the date of the Invoice.
5.3 International Customers shall make payments in accordance with
Western's Payment Instructions by either:
(a) providing a wire transfer (telegraphic transfer) for the full
amount of the Equipment, shipping and insurance charges
contained in the Quotation or the pro-forma Invoice sent to
the Customer, prior to the Shipping Date; or
(b) establishing an acceptable Letter of Credit (LC) for the full
amount of the Equipment, shipping and insurance charges
contained in the Quotation prior to the order being booked
and accepted by Western.
5.4 If a Customer fails to pay an Invoice when due, Western may,
without prejudice to am other remedy, postpone shipments, alter
payment terms, terminate the Agreement and charge interest on
all overdue amounts the rate of 1.5% per month compounded
monthly (or if less, the maximum allowed by law). Upon demand,
the Customer shall pay all such interest charges and all
reasonable collection fees, including reasonable legal expenses.
DEFINITIONS
1.1 In these Conditions, unless there is something in the subject
matter or context necessarily inconsistent:
(a) "Western" means Western Multiplex Corporation (d.b.a.
Western Multiplex), Sunnyvale, CA;
(b) "Equipment" means the equipment itemized on the
Quotation/Order Acknowledgment;
(c) "International" means any location other than United States
of America and Canada, including their territories and
possessions;
(d) "North America" means any location in the United States of
America and Canada, including their territories and
possessions;
(e) "Order Acknowledgment" means the sales order
acknowledgment provided by Western to the Customer;
(f)
"Payment Instructions" means Western's payment
instructions, (Western document P197-1);
(g) "Quotation" means the quotation signed by an authorized
representative of Western and provided to the Customer;
(h) "Shipping Date" means the actual date on which the
Equipment left Western's factory at Sunnyvale, CA, U.S.A.;
(i)
"Warranty" means Western's warranty, document W97-1;
(j)
"Invoice" means the bill of goods prepared by Western for
the equipment with the shipping and any insurance costs.
1.2 Headings have been inserted in these Conditions for convenience
of reference only and will not effect their construction.
SECURITY FOR PAYMENT
6.1 If the Customer is located in North America, the Customer grants
to Western a purchase money security interest in the Equipment to
secure the payment of the purchase price of the Equipment and all
other amounts due from the Customer.
6.2 If the Customer is not located in North America:
(a) despite delivery and passing of risk in the Equipment and
any other provision of these Conditions, the title in the
Equipment shall not pass to the Customer until Western has
received payment in full of the purchase price of the
Equipment and all other amounts then due from the
Customer, and
(b) until the title in the Equipment passes to the Customer:
(i)
the Customer shall hold the equipment as Western 's
fiduciary agent and bailee, and shall properly store,
protect and insure the Equipment and shall identify the
Equipment as Western property;
(ii) if the Customer fails to pay Western in accordance with
the agreed payment terms, Western may require the
Customer to deliver up the Equipment to Western,
and, if the Customer does not, Western may enter on
the premises where the Equipment is stored and
repossess the Equipment; and
(iii) the Customer shall not pledge the Equipment by way
of security for any, indebtedness of the Customer, but if
the Customer does so all moneys owed by the
Customer to Western shall, without prejudice to any
other remedy of Western, immediately become due.
ENTIRE AGREEMENT
2.1 The Quotation, these Conditions of Sale, the Order
Acknowledgment, the Payment Instructions and the Warranty shall
apply to all sales made by Western and shall constitute the entire
agreement by Western and the Customer (the "Agreement ").
2.2 Any terms and/or conditions of sale, which may be included on the
Customer's purchase order form or any communication from the
Customer, that are not identical with the terms and conditions
steed in this document shall NOT become a part of the agreement
of sale unless expressly agreed to in writing in the Quotation.
2.3 Western's failure to object to any terms and/or conditions of sale
contained in any communication from the Customer shall not be
considered as acceptance of such terms and/or conditions or as a
waiver of the terms and conditions of sale contained herein.
2.4 Western shall sell to the Customer, and the Customer shall
purchase from Western, the Equipment in accordance with the
Agreement. Western accepts the Customer's purchase orders for
Equipment and agrees to deliver the Equipment to the Customer
only on the terms of the Agreement.
2.5 No variation of the Agreement shall be binding unless agreed to in
writing by authorized representatives of Western and the
Customer.
PRICING
3.1 All prices in the Quotation are exclusive of all shipping charges
and all applicable taxes including but not limited to, federal, state,
local, excise, sales and use taxes.
3.2 All prices in the Quotation unless otherwise stated:
(a) for North American customers are FOB Sunnyvale, CA,
USA. (New York Uniform Commercial Code); or
(b) for international customers are Ex-Works, Sunnyvale, CA,
U.S.A. (Incoterms 1990).
3.3 All prices in the Quotation include standard domestic packing,
unless a separate line item is provided detailing export or special
packing charges.
CHANGES TO PRODUCT SPECIFICATIONS
7.1 Western may, without notice to the Customer, make changes to
the specifications of Equipment which do not materially affect the
quality or performance of the Equipment.
EQUIPMENT CONFIGURATION AND EXPEDITING CHARGES
8.1 At the Customer's request, Western may, for a fee agreed in
advance:
(a) reconfigure the Equipment; or
(b) expedite the Customer's order.
SHIPPING AND INSURANCE
4.1 Western shall arrange shipping and insurance when requested by
the Customer, and shall bill the Customer for the Equipment with
the shipping and any insurance costs as separate items, on an
invoice (the "Invoice").
4.2 Delivery dates quoted by Western are to be considered estimates
only. In no event will Western be liable for any loss or damage
resulting from its failure to deliver products within a specified time.
vii
W/CS97-1
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
DAMAGES FOR BREACH OF AGREEMENT
15.1 If either party is successful in any litigation between the parties
based on the Agreement, the successful party shall recover from
the other, in addition to direct damages, the successful party's
reasonable attorney's fees and other costs of litigation.
SHORTAGES
9.1 The customer shall not make any claim for shortages (which are
items that the Invoice does not show are on back-order) after
twenty-one (21) days after the date of the Invoice.
RETURNS AND EXCHANGES
10.1 The return of defective Equipment is covered by the Warranty .
10.2 The Customer may only return Equipment that is not defective if:
(a) the Equipment does not correspond with the Customer's
purchase order; or
(b) the Equipment has been ordered in error by the Customer
and Western has permitted the Customer to remedy the
mistake by ordering the correct equipment and resuming the
Equipment and the Customer obtains a Returned Materials
Authorization number ("RMA #") from Western prior to
returning any Equipment.
10.3 Western reserves the right to charge a fee for returned equipment
under Subparagraph 10.2(b) with the amount of the fee being
determined prior to an RMA # being given by Western.
10.4 Authorized returns of equipment under Paragraph 10.2 must be in
an undamaged condition, in the original configuration, in the
original packing materials and within a time period agreed to when
the RMA # was issued.
10.5 If the Customer does not comply with the provisions of Paragraphs
10.2, 10.3, and 10.4, the Customer shall pay the full amount of the
Invoice.
10.6 The party liable for all shipping, insurance and any other expenses
incurred by the Customer in returning the Equipment under
Paragraph 10.2 and for all loss or damage to the Equipment until
received by Western, shall be: (a) for all items returned under
Subparagraph 10.2(a), Western and (b) for all items resumed
under Subparagraph 10.2(b), the Customer.
INSOLVENCY OF CUSTOMER, ETC.
16.1 Western may cancel the Agreement and suspend any further
deliveries under the Agreement without any liability to the
Customer, and, if Equipment has been delivered but not paid for,
the price shall become immediately due and payable despite any
other agreement to the contrary if:
(a) any proceedings in bankruptcy, insolvency, receivership or
liquidation are taken against the Customer;
(b) the Customer makes an assignment for the benefit of
creditors or commits an act of bankruptcy or insolvency;
(c) the Customer ceases, or threatens to cease, to carry on the
ordinary course of its business, or transfers all or
substantially all of its property;
(d) the Equipment is seized under any legal process or
confiscated; or
(e) Western in good faith believes that the ability of the
Customer to pay or perform any provision of the Agreement
is impaired, or that any of the events mentioned above is
about to occur.
NOTICE
17.1 All requests, instructions and notices from one party to the other
must be in writing and may be given via registered post or
facsimile transmission to the address of the parties shown on the
Quotation or Order Acknowledgment.
EXPORT PROVISIONS
18.1 The Customer shall not, whether directly or indirectly (including
facilitating a third party) export or re-export the Equipment outside
the country in which the Customer has stated these items are to be
used without obtaining the licenses required under ail applicable
rules. The Customer shall indemnify Western against any liability
incurred by Western due to any violation by the Customer of any of
the provisions of this Section, but this indemnity shall not apply if
the Customer reasonably relies on information supplied to it by
Western with respect to export licenses. Upon receipt of a
governmental consent to export the receiving party shall
immediately notify the other in writing.
CANCELLATION
11.1 If the Customer cancels an order before the Shipping Date,
Western reserves the right to charge the Customer a cancellation
charge up to 100% of the amount of the order.
11.2 The Customer shall pay all cancellation charges within thirty (30)
days from date of the Invoice.
FORCE MAJEURE
12.1 Western shall not be liable if its performance of the Agreement
becomes commercially impractical due to any contingency beyond
Western's reasonable control, including acts of God, fires, floods,
wars, sabotage, civil unrest, accidents, labor disputes or
shortages, government laws, rules and regulations, whether valid
or invalid, inability to obtain material, equipment or transportation,
incorrect, delayed or incomplete specifications, drawings or data
supplied by the Customer or others (collectively "Force Majeure").
In no event of Force Majeure shall Western be required to
purchase goods from others to enable it to deliver the Equipment
under the Agreement.
MISCELLANEOUS
19.1 No waiver by Western of any breach of this Agreement shall be
considered as a waiver of any subsequent breach of the same or
any other provision.
19.2 Any provision of the Agreement which is, or is deemed to be,
unenforceable in any jurisdiction shall be severable from the
Agreement in that jurisdiction without in any way invalidating the
remaining portions of the Agreement, and that unenforceability
shall not make that provision unenforceable in any other
jurisdiction.
19.3 The rights which accrue to Western by virtue of the Agreement
shall inure for the benefit of and be binding upon the successors
and assigns of Western.
19.4 The agreement shall be governed by the laws of the State of
California including the California Uniform Commercial Code.
However Western may enforce the provisions of the Agreement in
accordance with the laws of the jurisdiction in which the Equipment
is situated. The United Nations Convention on the Sale of Goods
(The Vienna Convention) shall not apply to the Agreement.
19.5 Les parties ont exigés que cette entente soit rédigée en anglais.
ENGINEERING AND SYSTEM DESIGN
13.1 The Customer is solely responsible for the engineering, design,
integration and normal preventative and remedial maintenance of
the Customer's system for which Western supplies Equipment.
13.2 Western is not responsible for the satisfactory operation of the
Equipment in conjunction with other manufacturer's equipment, nor
for any losses which may occur as a result of a failure of the
Equipment to operate in conjunction with other manufacturer's
equipment.
WARRANTY
14.1 All Equipment is covered by the Warranty.
14.2 THE WARRANTY CONTAINS LlMITATIONS ON THE
CUSTOMER'S RIGHTS AND REMEDIES AGAINST WESTERN
UNDER
THE
AGREEMENT.
THE
CUSTOMER
ACKNOWLEDGES HAVING READ, UNDERSTOOD AND
AGREED TO THOSE LIMITATIONS.
W/CS97-1
viii
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
Table of Contents
1.
HOW TO USE THIS MANUAL ..................................................................................................................... 1-1
1.1
1.2
1.3
2.
MANUAL ORGANIZATION............................................................................................................................ 1-1
PRODUCT GUIDE........................................................................................................................................ 1-2
ICONS ......................................................................................................................................................... 1-2
PRODUCT DESCRIPTION ........................................................................................................................... 2-1
2.1
GENERAL DESCRIPTION ............................................................................................................................ 2-1
2.1.1
Lynx Evolution: 3 Generations .......................................................................................................... 2-2
2.2
SPECIFICATIONS ........................................................................................................................................ 2-3
2.2.1
Transmitter......................................................................................................................................... 2-3
2.2.2
Antenna / Antenna Coupling Unit...................................................................................................... 2-4
2.2.3
Receiver.............................................................................................................................................. 2-5
2.2.4
System (Single Hop Performance) ..................................................................................................... 2-6
2.2.5
Digital Line Interface......................................................................................................................... 2-7
2.2.6
Auxiliary Connections........................................................................................................................ 2-8
2.2.7
Temperature and Environment .......................................................................................................... 2-9
2.2.8
Power ................................................................................................................................................. 2-9
2.2.9
Regulatory Information.................................................................................................................... 2-10
2.2.10 Mechanical....................................................................................................................................... 2-10
2.3
FRONT PANEL DESCRIPTION ................................................................................................................... 2-11
2.3.1
General ............................................................................................................................................ 2-11
2.3.2
Test Points / Power Indicator .......................................................................................................... 2-12
2.3.3
Alarm and Status Indicators ............................................................................................................ 2-13
2.3.4
Controls............................................................................................................................................ 2-14
2.3.5
Connections...................................................................................................................................... 2-15
2.4
REAR PANEL DESCRIPTION ..................................................................................................................... 2-16
2.4.1
RF Connection ................................................................................................................................. 2-17
2.4.2
DATA Connections (DSX-3 and DSX-1).......................................................................................... 2-18
2.4.3
Auxiliary Data Connections............................................................................................................. 2-19
2.4.4
Switches............................................................................................................................................ 2-20
2.5
INSTALLATION ACCESSORIES .................................................................................................................. 2-22
3.
INSTALLATION & ADJUSTMENTS............................................................................................................ 3-1
3.1
SHIPPING CONTAINER ............................................................................................................................... 3-1
3.2
PACKING ITEMS IDENTIFICATION ............................................................................................................... 3-2
3.3
BEFORE INSTALLATION TASK LIST ............................................................................................................ 3-3
3.3.1
Site Selection Requirements ............................................................................................................... 3-4
3.3.2
Line-of-Sight and Path Clearance Guidelines ................................................................................... 3-5
3.3.3
RSL Calculation and Link Budget...................................................................................................... 3-6
3.3.4
Fade Margin Calculation................................................................................................................... 3-7
3.3.5
Availability Calculation ..................................................................................................................... 3-8
3.3.6
Frequency Plan Determination.......................................................................................................... 3-9
3.3.7
Power Supply Planning.................................................................................................................... 3-10
3.3.8
Antenna Planning ............................................................................................................................ 3-11
3.4
TOOLS REQUIRED .................................................................................................................................... 3-12
3.5
FREQUENCY CHANNEL PLANS ................................................................................................................ 3-13
TOC & INTRODUCTION
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
3.6
MOUNTING THE LYNX DS-3 ..................................................................................................................... 3-15
3.7
POWER CONNECTION AND W IRING ........................................................................................................ 3-16
3.7.1
DC Power Wiring............................................................................................................................. 3-17
3.7.2
AC Power Connection...................................................................................................................... 3-19
3.8
ANTENNA CONNECTION ........................................................................................................................... 3-20
3.9
TRANSMISSION LINE CONNECTION ......................................................................................................... 3-21
3.10 ANTENNA INSTALLATION & ALIGNMENT .................................................................................................. 3-22
3.11 DS-3 AND DS-1 (T1) INTERFACE CONNECTION .................................................................................... 3-25
3.12 DIP SWITCH SETTINGS ........................................................................................................................... 3-27
3.12.1 Channel Selection ............................................................................................................................ 3-27
3.12.2 Line Code Selection ......................................................................................................................... 3-28
3.12.3 Line Build Out Selection .................................................................................................................. 3-29
3.12.4 Loopback Test Signal Selection (DS-3 only).................................................................................... 3-30
3.12.5 Security Code Selection ................................................................................................................... 3-31
3.12.6 Input Alarm (Data Loss) Enable/Disable......................................................................................... 3-32
3.12.7 AIS Enable/Disable.......................................................................................................................... 3-33
3.13 SYSTEM TURN-UP TO SERVICE ............................................................................................................... 3-34
3.13.1 Output Power Adjustment ................................................................................................................ 3-39
3.13.2 Loopback/BER Testing..................................................................................................................... 3-40
3.13.3 Error LED Mode Selection .............................................................................................................. 3-42
3.14 ADDITIONAL CONNECTIONS ..................................................................................................................... 3-43
3.14.1 Orderwire Connection and Address Selection ................................................................................. 3-43
3.14.2 Alarm Connections........................................................................................................................... 3-46
3.14.3 Diagnostics Port Operation ............................................................................................................. 3-47
3.14.3.1
Diagnostics Port using RS-232 .................................................................................................... 3-49
3.14.3.2
Diagnostics Port using RS-422 .................................................................................................... 3-50
3.14.3.3
TBOS Protocol and Map.............................................................................................................. 3-51
3.14.4 AUX DATA (Digital Service Channel) Connection ......................................................................... 3-53
3.14.5 Monitored Hot Stand-by Protection................................................................................................. 3-56
4.
TROUBLESHOOTING................................................................................................................................... 4-1
4.1
REGULAR MAINTENANCE........................................................................................................................... 4-1
4.2
CHANGING FREQUENCY PLANS ................................................................................................................ 4-2
4.3
USING A SPARE TERMINAL ........................................................................................................................ 4-3
4.4
TECHNICAL SUPPORT ................................................................................................................................ 4-4
4.5
REPAIR POLICY .......................................................................................................................................... 4-5
4.6
FRONT PANEL STATUS LEDS ................................................................................................................... 4-6
4.6.1
DATA LOSS Alarms ........................................................................................................................... 4-7
4.6.2
BER (Bit Error Rate) Alarm............................................................................................................... 4-9
4.6.3
RX SYNC (Receiver Synchronization) Alarm................................................................................... 4-12
4.6.4
AIS OUT (Alarm Indication Signal)................................................................................................. 4-13
4.6.5
FAN Alarm ....................................................................................................................................... 4-14
4.6.6
RADIO FAIL Alarm ......................................................................................................................... 4-15
4.6.7
FAR END Alarm .............................................................................................................................. 4-16
4.7
ERRORS IN THE DATA STREAM ............................................................................................................... 4-17
4.8
INTERFERENCE COUNTERMEASURES ..................................................................................................... 4-19
4.8.1
Use of a Spectrum Analyzer to Evaluate Potential Interference...................................................... 4-21
4.9
BACK-TO-BACK TESTING......................................................................................................................... 4-22
4.10 BER (BIT ERROR RATE) TESTING .......................................................................................................... 4-24
5.
APPENDICES.................................................................................................................................................. 5-1
APPENDIX A - DIGITAL LINE INTERFACE SPECIFICATIONS ................................................................................... 5-1
ii
TOC & INTRODUCTION
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
1.
2.
Pulse Density Assurance and Maintenance ............................................................................................... 5-1
DS-1 ........................................................................................................................................................... 5-2
APPENDIX B - REAR PANEL DIP SWITCHES ............................................................................................................ 5-5
APPENDIX C - REAR PANEL DATA CONNECTORS .............................................................................................. 5-10
Figures
FIGURE 2-1: FRONT PANEL, 5.8 GHZ DS-3 (SINGLE BAND)...................................................................................... 2-11
FIGURE 2-2: FRONT PANEL, 5.8 GHZ DS-3 (DUAL BAND) ........................................................................................ 2-11
FIGURE 2-4: REAR PANEL, 5.8 GHZ DS-3 (SINGLE BAND)........................................................................................ 2-16
FIGURE 2-5: REAR PANEL, 5.3/5.8 GHZ DS-3 (DUAL BAND) .................................................................................... 2-16
FIGURE 3-1: CHANNEL PLAN, 5.8 GHZ (SINGLE BAND) ........................................................................................... 3-13
FIGURE 3-2: CHANNEL PLAN, 5.3/5.8 GHZ (DUAL BAND)........................................................................................ 3-14
FIGURE 3-3: NEGATIVE VOLTAGE DC CONNECTION ................................................................................................ 3-18
FIGURE 3-4: POSITIVE VOLTAGE DC CONNECTION .................................................................................................. 3-18
FIGURE 3-5: AC CONNECTION .................................................................................................................................. 3-19
FIGURE 3-6: TYPICAL RSL VOLTAGE VERSUS RECEIVED SIGNAL LEVEL (RSL)....................................................... 3-24
FIGURE 3-7: DS-1 CONNECTION, 9-PIN CONNECTOR ................................................................................................ 3-26
FIGURE 3-8: DS-1 CONNECTION, MODULAR CONNECTOR (RJ-48C) ........................................................................ 3-26
FIGURE 3-9: LINE CODE SWITCH .............................................................................................................................. 3-28
FIGURE 3-10: LINE BUILD OUT (LBO) SWITCHES .................................................................................................... 3-29
FIGURE 3-11: LOOPBACK MODE SELECTION............................................................................................................. 3-30
FIGURE 3-12: SECURITY CODE SELECTION ............................................................................................................... 3-31
FIGURE 3-13: INPUT ALARM DISABLE SWITCH ......................................................................................................... 3-32
FIGURE 3-14: AIS SWITCH ....................................................................................................................................... 3-33
FIGURE 3-15: TYPICAL RF OUTPUT POWER VERSUS PWR VOLTAGE ....................................................................... 3-36
FIGURE 3-16: ERROR LED MODE SELECTION .......................................................................................................... 3-42
FIGURE 3-17: RJ-11 ORDERWIRE TELEPHONE CONNECTION .................................................................................... 3-44
FIGURE 3-18: VF PORT AND VF CONNECTIONS ....................................................................................................... 3-45
FIGURE 3-19: PIN CONNECTIONS, ALARM INTERFACE ........................................................................................... 3-46
FIGURE 3-20: DIAGNOSTIC PORT PROTOCOL SELECTION .......................................................................................... 3-48
FIGURE 3-21: RS-232 DIAGNOSTIC PORT CONNECTIONS.......................................................................................... 3-49
FIGURE 3-22: RS-422 DIAGNOSTIC PORT CONNECTIONS.......................................................................................... 3-50
FIGURE 3-23: REPEATER AND HUB TBOS RADIO NETWORK MANAGEMENT ........................................................... 3-54
FIGURE 3-24: REPEATER APPLICATION WITH SITE NETWORK MANAGEMENT ........................................................... 3-54
FIGURE 3-25: AUX DATA CABLE CONNECTION FOR REPEATER/HUB .................................................................... 3-55
FIGURE 3-26: AUX DATA SELECTION ...................................................................................................................... 3-55
FIGURE 3-27: MHS CONFIGURATION ....................................................................................................................... 3-56
FIGURE 4-1: BACK-TO-BACK TEST CONFIGURATION ................................................................................................ 4-23
FIGURE 4-2: END-TO-END BER TEST CONFIGURATION ............................................................................................ 4-24
FIGURE A-1: DS-1 PULSE TEMPLATE CORNER POINTS (NEW EQUIPMENT) ................................................................ 5-4
FIGURE C-1: DS-1 9-PIN D-STYLE CONNECTOR ....................................................................................................... 5-10
FIGURE C-2: DS-1 MODULAR CONNECTOR (RJ-48C) .............................................................................................. 5-10
FIGURE C-3: VF PORT CONNECTION ........................................................................................................................ 5-10
FIGURE C-4: ALARM PORT CONNECTIONS ................................................................................................................ 5-11
FIGURE C-5: DIAGNOSTIC AND AUX DATA (TBOS) PORT CONNECTIONS ............................................................. 5-11
TOC & INTRODUCTION
iii
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE FREE (U-NII, LE-LAN) RADIOS
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FIGURE C-6: DS-3 CONNECTIONS (BNC FEMALE) ................................................................................................... 5-11
Tables
TABLE 3-A: DC POWER CONNECTION FOR NEGATIVE SUPPLY................................................................................. 3-16
TABLE 3-B: DC POWER CONNECTION FOR POSITIVE SUPPLY ................................................................................... 3-16
TABLE 3-C: ALARM INTERFACE CONNECTIONS ........................................................................................................ 3-47
TABLE 3-D: TBOS MAP FOR THE LYNX DS-3 ......................................................................................................... 3-52
TABLE A-1: EXAMPLES OF B8ZS CODING .................................................................................................................. 5-2
TABLE A-2: DS-1 INTERCONNECTION SPECIFICATION ................................................................................................ 5-3
TABLE A-3: DS-1 ISOLATED PULSE TEMPLATES AND CORNER POINTS ...................................................................... 5-4
TABLE B-1: LYNX DS-3
TABLE B-2: LYNX DS-3
TABLE B-3: LYNX DS-3
TABLE B-4: LYNX DS-3
iv
5.8 GHZ SINGLE BAND SWITCH SETTINGS .......................................................................... 5-6
5.8 GHZ SINGLE BAND SWITCH SETTINGS .......................................................................... 5-7
5.3/5.8 GHZ DUAL BAND SWITCH SETTINGS ...................................................................... 5-8
5.3/5.8 GHZ DUAL BAND SWITCH SETTINGS ...................................................................... 5-9
TOC & INTRODUCTION
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
1. How to Use This Manual
1.1
Manual Organization
The Installation and Maintenance Manual provides information required to install and maintain the
Lynx DS-3 and to use its many features to the fullest advantage. This manual is divided into the
following sections:
Section 1
How to Use This Manual. Provides instructions on how to most effectively
utilize the information in this manual.
Section 2
Product Description. Provides a brief description and specifications of the
Lynx DS-3.
Section 3
Installation & Maintenance. Explains the Lynx DS-3 installation and
adjustments in detail.
Section 4
Troubleshooting. Provides maintenance, repair and troubleshooting
information for the Lynx DS-3.
Appendices
Provides charts and diagrams for radio connections and DIP switch
settings along with other general information.
This device must be professionally installed. Instructions on
setting the transmitter RF output power are contained in
Section 3 of this Manual.
This device is to be used exclusively for fixed point-to-point
operation that employs directional antennas.
SECTION 1: HOW TO USE THIS MANUAL
PAGE 1-1
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
1.2
Product Guide
The Lynx DS-3 Product Guide is a separate publication from this manual. The Product Guide is
used for all the activity typically performed prior to the installation of the radios. The Product Guide
contains the following information:
General Features Description
Ordering Information
Path Planning
Installation Planning
The Path Planning portion of the product guide is critical to the success of the installation and use
of the Lynx DS-3 radios. If you have not performed path planning, consult the Lynx DS-3 Product
Guide to determine the anticipated performance of your radio system link. This information will be
very helpful during installation, troubleshooting and maintenance. General information on path
planning is also available in Section 3 of this manual.
1.3
Icons
Throughout this manual, the following icons are used to highlight areas of special interest and
importance.
Note
PAGE 1-2
Practical Tip
Caution
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INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
2. Product Description
2.1
General Description
The Lynx DS-3 provides a new level of control and convenience in a digital communications
network. LYNX DS-3 is not a spread spectrum radio but it operates in the U-NII bands. Under
FCC rules governing the U-NII bands, users are not required to have a license to operate the
LYNX DS-3 radios in the United States as long as the radios meet the maximum allowable EIRP
limits. The Lynx DS-3 carries up to 28 DS-1 signals between two locations without the expense
and delay of installing cable or traditional (licensed) microwave. The DS-3 ports can interface any
equipment (such as switches, and multiplexers) that provide a telco standard DS-3 port.
Because each owner controls the operation of the link there is no reliance on any outside
services. Lynx DS-3 operators are able to (1) operate instant links whenever needed, and (2) to
be in control of their own network.
The Lynx DS-3 offers two primary benefits:
❖
CONVENIENCE
Easy to install and operate with no user license requirements or frequency
coordination in the USA, including Puerto Rico, and Canada. (Other countries may
require a user license and/or frequency coordination).
❖
CAPABILITY
Full transparent DS-3 signals over any line-of-sight distance (typically up to 20 miles,
depending on terrain and governmental regulations).
SECTION 2: PRODUCT DESCRIPTION
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LYNX DS-3 (45 Mbps)
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2.1.1
LYNX Evolution: 3 Generations
In 1992, Western Multiplex Corporation introduced the original first generation Lynx radios. These
radios were the first radios to provide T1 and E1 point-to-point communications in the world.
In 1994, Western Multiplex Corporation added a significant feature to the Lynx product line. The
second generation Lynx.cp product family provided controlled power, which allowed users to
adjust the radio transmitter output power in order to meet EIRP limits. Also, Western Multiplex
Corporation introduced the first double-capacity radios, the Lynx 2T6 and Lynx 2E6 in this family
series.
The third generation Lynx.sc and Lynx.HD now continues this product evolution by adding many
additional user features, most notably a service channel. The service channel allows radios to
carry additional traffic over the radio link, such as alarms or network management. In addition,
orderwire and remote/far-end monitoring features have been added along with some improved
performance features, such as forward error correction and extended temperature operation. In
addition, the Lynx.sc is available in Fractional Capacities (56 to 512 kbps), and Lynx.HD is
available in 4xT1and 4xE1 capacities in the 2.4 and 5.8 GHz ISM bands as well as 8xT1 and 8xE1
capacities in the 5.8 GHz ISM band.
Lynx DS-3 radios incorporate all the unique features of the Lynx.sc/Lynx.HD generation, e.g.
service channel, orderwire, extended operation temperature, far end monitoring, and network
management.
PAGE 2-2
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INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
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2.2
Specifications
All specifications are subject to change without notice.
2.2.1
Transmitter
Both Models
Frequency Selection
Rear Panel DIP switches; 7-cavity RF filter assembly
Modulation
OQPSK
Single Band
5.3 GHz
Single Band
5.8 GHz
Dual Band
5.3/5.8 GHz
Output Power (typ.)
Output Power (min.)
Control Range
+18 dBm
+17 dBm
17 dB min
+18 dBm
+17 dBm
17 dB min.
+11 dBm
+10 dBm
10 dB min.
Frequency Range
5284-5316 MHz
(occupies
52505350 MHz)
5750-5800 MHz
(occupies
57255825 MHz)
5284-5316 MHz and 5759-5791 MHz
(occupies
5250-5350 MHz and
5725-5825 MHz)
SECTION 2: PRODUCT DESCRIPTION
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INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
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2.2.2
Antenna / Antenna Coupling Unit
Both Models
Mechanics
External antenna
Antenna Connection
N-type female
Impedance
50 ohms
Recommended
Antenna (not included)
Single Band Models
2, 4, 6, 8 or 10 foot
parabolic
Size
2 ft
4 ft
6 ft
8 ft
10 ft
Gain / 3dB Beam width
29 dB / 6°
35 dB / 3°
38 dB / 2°
41 dB / 1.5°
43 dB / 1.3°
PAGE 2-4
Dual Band
2, 4, 6, 8 or 10 foot
parabolic
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INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
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2.2.3
Receiver
All Models
Nominal Receive Level
-30 to -60 dBm
Maximum Receive Level
-5 dBm error free, +10 dBm no damage
Frequency Selection
Rear Panel DIP switches, 7-cavity RF filter assembly
Threshold Rx Level
-6
(BER = 10 )
Single Band Models
-78 dBm
Dual Band
-78 dBm
SECTION 2: PRODUCT DESCRIPTION
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INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
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2.2.4
System (Single Hop Performance)
All Models
-11
Error Floor
Dispersive Fade Margin
10
38 dB, typical
Carrier-to-Interference (like)
Co-channel
Adjacent-Channel
+9 dB
-21 dB
Transmission delay
(radio only)
(10 mile path)
250 µsec, maximum
300 µsec, maximum
Transmit Frequencies
Single Band (5.3 GHz)
Single Band (5.8 GHz)
Dual Band (5.3/5.8 GHz)
A1 channel
5275 MHz
5750 MHz
5284 MHz
A2 channel
5325 MHz
5800 MHz
5759 MHz
B1 channel
N/A
N/A
5316 MHz
B2 channel
N/A
N/A
5791 MHz
Receive Frequencies
Single Band (5.3 GHz)
Single Band (5.8 GHz)
Dual Band (5.3/5.8 GHz)
A1 channel
5325 MHz
5800 MHz
5759 MHz
A2 channel
5275 MHz
5750 MHz
5284 MHz
B1 channel
N/A
N/A
5791 MHz
B2 channel
N/A
N/A
5316 MHz
PAGE 2-6
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LYNX DS-3 (45 Mbps)
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2.2.5
Digital Line Interface
Both Models
DS-3 Channel
Data Rate
Digital Interface
44.736 Mbps
DSX-3
Connector
BNC female, 75 Ohm
Line Code
B3ZS
Line Build Out
0-900 feet (rear panel DIP switch selectable)
Blue Code
Alarm Indication Signal (AIS)
Remote Loopback
Internal or external test signal (rear panel DIP switch selectable)
Wayside Channel
Data Rate
1.544 Mbps
Digital Interface
DSX-1
Connector
DB-9 female, 8-pin modular jack female (RJ-48C)
Line Code
AMI / B8ZS (rear panel DIP switch selectable)
Line Build Out
0-660 feet (rear panel DIP switch selectable)
Blue Code
Remote Loopback
Alarm Indication Signal (AIS)
External test signal (rear panel DIP switch selectable)
Meets ANSI-T1-102-1987
Signal is selectable (on/off) and is generated only on data loss or link failure when selected.
Meets AT&T Pub 62411, Bellcore TR-TSY-000499.
SECTION 2: PRODUCT DESCRIPTION
PAGE 2-7
INSTALLATION AND MAINTENANCE MANUAL
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2.2.6
Auxiliary Connections
All Models
Orderwire Interface
2-wire, 4-pin modular jack, female (RJ-11)
REN (Ringer Equivalency Number)
1.0 B
Ringing Voltage
48 VDC, typical
(use telephones with solid state ringers, NOT adequate for older style mechanical ringers)
VF Orderwire Bridge
600 ohm balanced, 4-wire, 0 dBm, DB-25, male
Diagnostic Port
RS-232/ RS-422 (Craft / TBOS), DB-9, male
Aux Data (clear service channel)
RS-232 / RS-422, ≤9600 baud, DB-9, female
Alarm
2 x Form C, 6 x TTL, 2 x analog, DB-25, female
Test Points (front panel)
Output power, near-end and far-end
received signal level (RSL)
PAGE 2-8
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LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
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2.2.7
Temperature and Environment
All Models
Operating Temperature Range
-30 to +65°C
Humidity
95% non-condensing
Altitude
15,000 feet, maximum
2.2.8
Power
All Models
DC Input Voltage
±20 to ±60 VDC
Power Consumption
< 45 watts
AC Adapter (optional)
100-250 VAC, 50-60 Hz, +24 VDC
Connector
Barrier strip, plug-in type
SECTION 2: PRODUCT DESCRIPTION
PAGE 2-9
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
2.2.9
Regulatory Information
5.3 GHz
5.8 GHz
5.3/5.8 GHz
FCC Identifier
HZB-U53-45
HZB-U58-45
HZB-U5358-45
FCC Rule Parts
15.247
15.247
15.247
Industry Canada ID
TBD
522 102 1581A
TBD
IC Rule Parts
RSS 210
RSS 210
RSS 210
2.2.10 Mechanical
All Models
Width (for 19-inch EIA
rack mounting)
17.2" (rack mounting brackets supplied)
Height
3.5" (2RU)
Depth
14.5"
Weight
11 lbs.
PAGE 2-10
SECTION 2: PRODUCT DESCRIPTION
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
2.3
2.3.1
Front Panel Description
General
The Lynx DS-3 front panels, as shown in Figure 2-1 through 2-3, have LED indicators, test points,
controls and connections that are used for installation, maintenance, operation and
troubleshooting. Prior to installation, it is best to be familiar with the front panel of your particular
model. Sections 2.3.2 through 2.3.5 briefly describe the front panel access and lights from left to
right.
Figure 2-1: Front Panel, Lynx DS-3 (single band), 5.3 or 5.8 GHz
Figure 2-2: Front Panel, Lynx DS-3 (dual band), 5.3/5.8 GHz
SECTION 2: PRODUCT DESCRIPTION
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INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
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2.3.2
ON
Test Points / Power Indicator
This is an LED indication. When lit GREEN, the Lynx DS-3 is powered.
The Lynx DS-3 product does not have an on/off switch.
GND
This is a test point referenced to chassis ground. This is used in conjunction with the
next two test points to measure voltages related to radio performance.
RSL
This is a test point which relates to the Received Signal Level (RSL). A voltage can
be measured with a voltmeter (using the GND test point for reference) which
corresponds to the actual power level of the incoming received signal. While the
DISPLAY FAR END button is pressed, this RSL voltage corresponds to the RSL of
the far-end radio. These measurements are used during installation, maintenance
and troubleshooting.
LOCAL
TX PWR
This is a test point which corresponds to the output transmit power of the radio. A
voltage can be measured with a voltmeter (using the GND test point for reference)
which corresponds to the actual power level of the outgoing signal. This
measurement is used during installation, maintenance and troubleshooting
This voltage only applies to the near-end and does not allow measurement
of the far-end output transmit power, even when the DISPLAY FAR END
button is pressed.
There is a receptacle on the front panel to the right of the LOCAL TX PWR test point
which is an installation adjustment allowing the output transmit power to be
increased or decreased within the radio's specified limits. Using a small screwdriver,
this adjustment is used to set the output power of the transmitter, in accordance to
the path planning.
The Lynx DS-3 requires professional installation. Transmitted output power
limits may apply when using this radio. Consult FCC, IC, Western Multiplex
or other regulatory authorities for limits which may apply. See Section 3.13.1
for details on setting output power.
PAGE 2-12
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LYNX DS-3 (45 Mbps)
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2.3.3
Alarm and Status Indicators
DS3
INPUT
When lit RED, this is an alarm condition indicating that the Lynx DS-3 is not
receiving DS-3 input data. This alarm function can be disabled by rear panel DIP
switch setting (see Section 2.4.4). Under data loss condition, the local transmitter
injects AIS (Alarm Indication Signal).
DS1
INPUT
When lit RED, this is an alarm condition indicating that the Lynx DS-3 is not
receiving DS1 at the “DS1 INTERFACE” (wayside input port). This alarm function
can be disabled by rear panel DIP switch setting (see Section 2.4.4). Under data
loss condition, the local transmitter injects AIS (Alarm Indication Signal).
BER
This is the Bit Error Rate (BER) alarm. When lit RED, this alarm condition indicates
-6
that the received signal bit error rate is above the error threshold of 1 x 10 . This
alarm condition typically indicates a path problem or a problem with the far-end radio
and usually is not a problem with the near- end radio.
RX SYNC
When lit RED, this is an alarm condition indicating that the intended received signal
is not being received. This alarm may indicate problems related to the path,
connections, or the near-end or far-end radio hardware. When the RX SYNC alarm
is active, AIS (Alarm Indication Signal) is injected into the DS-3 and DS-1 line
transmit output data ports.
AIS OUT
When lit RED, this is a status condition indicating that the radio receiver is
transmitting AIS (Alarm Indication Signal) on the DS-3 and DS-1 line transmit output
data port, due to loss of received signal. This typically indicates a path or connection
problem or a near-end or far-end radio hardware problem. This alarm function can
be disabled by rear panel DIP switch setting (see Section 3.12.7). When flashing
rapidly, the security ID switches, SW2-1 through SW2-8, on the two radios are not
identically set. Under this condition, DS-3 data is muted but other data ports function
normally.
FAN
When lit RED, this is an alarm condition indicating a failure with one or both of the
internal cooling fans. The radio is designed to operate within specification when only
one fan is operating. The two fans are provided for redundancy only.
RADIO
FAIL
When lit RED, this is an alarm condition indicating a major failure with the near-end
radio hardware. It can also indicate improper connections to the DS-1 output port,
e.g. a short to ground on the DS-1 line.
FAR END
When lit RED, this is an alarm condition indicating that there are alarm or status
conditions present on the far-end radio. Press and hold the "Display Far End" button
on the near-end radios to indicate the alarm conditions for the far-end radio terminal.
Monitoring the far-end alarms can be helpful for radio installation and routine
maintenance.
SECTION 2: PRODUCT DESCRIPTION
PAGE 2-13
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
2.3.4
Controls
Loopback is a test method used which transmits either an internal or external test
signal and loops this signal back at the far-end radio (re-transmits the signal back
to the near end). The near end then receives the signal. The loopback function is
very useful for testing the overall link performance. The test signal can be
monitored at the near-end using either a bit error rate (BER) test set, or the internal
test features, without requiring presence of a second person at the far-end radio
location. Lynx DS-3 provides DS-3 loopback using both external and internal test
signal, as well as DS-1 loopback using external test source only.
ERROR
When lit RED, this indicates that a bit error occurred while in loopback mode. If you
are not using a BER test set, this LED may be observed to determine if there are
any bit errors during loopback, for example during an overnight test.
DS3
This is a push-button switch that executes the loopback mode for the DS-3 channel.
Loopback is initiated by pressing and holding this switch for approximately 3
seconds. Once in loopback mode, the LED which is embedded in the switch is
illuminated YELLOW to indicate that Loopback is ON. The LED on the near-end
radio flashes while the far-end is solid. Loopback is disabled by pushing and
releasing the DS3 button on either the near-end or far-end radio.
DS1
This is a push-button switch that executes the loopback mode for the wayside DS-1.
Loopback is initiated by pressing and holding this switch for approximately 3
seconds. Once in loopback mode, the LED which is embedded in the switch is
illuminated YELLOW to indicate that Loopback is ON. The LED on the near-end
radio flashes while the far-end is solid. Loopback is disabled by pushing and
releasing the DS1 button at either the near-end or far-end radio.
Enabling either DS3 or DS1 loopback will interrupt traffic. This is an out-ofservice test.
DISPLAY
FAR END
PAGE 2-14
This push-button provides the capability to determine alarms and status of the farend radio. When pressed and held, the alarm and status LEDs and the RSL test
point correspond to the far-end radio’s status and RSL value. This can be used for
installation, maintenance and troubleshooting. When the LED on this switch is
flashing, no far-end information is available. This typically indicates that there is no
link between near-end and far-end radios.
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INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
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2.3.5
Connections
ORDERWIRE
This connection is used to access the orderwire function. This is a facility for "telephone" style
service from one radio to another. A standard electronic telephone [one with a handset and DTMF
(push-button tone) dialing] plugs into this connector. The user can dial the orderwire address of
the far-end radio (or any radio in the Lynx DS-3 network) to establish telephone communication
between sites. This communication does not interrupt or interfere with the other radio
communications. The radio link must be operational to use this facility. The orderwire feature can
be very useful for installation, maintenance and troubleshooting.
SECTION 2: PRODUCT DESCRIPTION
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INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
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2.4
Rear Panel Description
The Lynx DS-3 rear panel, as shown in Figures 2-4 through 2-6, has connections and DIP
switches that are used for installation, maintenance, operation and trouble-shooting. Prior to
installation, you should familiarize yourself with the rear panel.
Figure 2-4: Rear Panel, 5.8 GHz DS-3 (single band)
Figure 2-5: Rear Panel, 5.3/5.8 GHz DS-3 (dual band)
PAGE 2-16
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LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
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2.4.1
RF Connection
The RF port of the Lynx DS-3 radio is a 50 Ohm, N-type female connector that is an integral part
of the filter assembly. The filter assembly occupies nearly the entire top half of the rear panel. The
N-Type connector is used to connect the antenna, typically using coaxial transmission line. In
some cases, waveguide may be used as the primary transmission line, in which case a
waveguide-to-N adapter is required.
For the Lynx DS-3, 1/2" or 5/8” coaxial cable (LDF4-50 or
LDF4.5-50) is recommended. Coaxial cable that is 7/8” or
larger can exhibit moding at 5.8 GHz and is not recommended.
For waveguide transmission line at 5.8 GHz, EW-52 waveguide
is recommended. EW-63 will also work, but may exhibit more
loss.
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LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
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2.4.2
DATA Connections (DSX-3 and DSX-1)
The connection for the DS-3 signal is BNC female (75 Ohm, unbalanced) as shown in Figures 2-4
and 2-5.
There are two types of connections available for the wayside DS-1 interface: RJ-48(C) and DB-9
female. On any radio, either connector may be used as the DS-1 data interface.
Using both RJ-48(C) and DB-9 simultaneously at any radio, will
cause data errors.
PAGE 2-18
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LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
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2.4.3
Auxiliary Data Connections
There are 4 auxiliary data connections for Lynx DS-3 as shown in Figure 2-4 and Figure 2-5.
VF
This DB-25 male connector is used to link two Lynx DS-3 radios at a repeater site
for Orderwire operation. This would allow orderwire "telephone" calls to and from any
point in the Lynx DS-3 network. At a 4-way repeater site, the VF ports must be
connected to a 4-way, 4-wire bridge.
The Lynx DS-3 orderwire circuit can also be connected to other existing
orderwire networks. See Section 3.14.1 for details.
ALARM
This DB-25 female connector is used for monitoring alarms and status electrically.
The alarm connections are essentially the same as described for the front panel,
however instead of LED operation, alarm status is provided electrically by means of
TTL and Form C relay connections. The TTL and Form C relays can be connected
to other transmission equipment for monitoring alarm status locally or remotely. In
addition to the Form C and TTL alarms, there are two analog monitor points.
DIAGNOSTICS
This DB-9 male connector is a serial interface port (RS-232 or RS-422, ≤9600 baud)
to the Lynx DS-3 radio. This port provides maintenance information about the Lynx
DS-3 radio(s) to a connected computer or terminal. This port is typically used for
maintenance and troubleshooting or connection to network management systems.
AUX
DATA
This DB-9 female connector is a serial interface port (RS-232 or RS-422, ≤9600
baud) which allows the user to connect auxiliary serial data from one point in the
radio network to another. This facility can also be used for bridging the
DIAGNOSTICS port for remote alarm and status monitoring (TBOS network
management) or for connecting other equipment's serial alarm information. It can
alternatively be used for separate data connection for LANs or other serial devices.
SECTION 2: PRODUCT DESCRIPTION
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INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
2.4.4
Switches
There are three sets of 8-segment DIP switches (SW1, SW2, and SW3) and two rotary switches
(Address TENS and ONES) on the rear panel of the Lynx DS-3 as shown in Figures 2-4 and 2-5.
These switches provide user configuration of several radio parameters. A brief explanation for
each function follows.
Line Build
Out
(DS-1)
This set of switch segments allows the user to adjust the wayside DS-1 input signal
to accommodate a variety of cable lengths from 0 to 655 feet to a DSX-1 interface.
(see Section 3.12.3)
Line Code
This set of switch segments allows selection between AMI or B8ZS coding for the
wayside DS-1 signal. (see Section 3.12.2)
Input
Alarm
Disable
These switch segments allow the user to "turn off" the data loss alarms for the DS-1
and DS-3 input channel. This can be helpful if the data channel is not in use or while
performing a maintenance or installation operation to temporarily turn off the alarm
indication. Even when the data loss alarm is disabled, the Lynx DS-3 will inject AIS
into the transmitted data stream when there is a data loss condition. (see Section
3.12.6)
AIS
Disable
This switch segment allows the user to select whether or not an AIS signal will be
-3
automatically injected into the received T1 data stream at BER ≥ 1 x 10 . This can
be useful for measuring threshold or when a T1 channel is not in use. The AIS will
be injected into the received T1 data stream if the radio loses sync (RX SYNC alarm
active), even if the AIS disable function has been selected. (see Section 3.12.7)
Diagnostics
Protocol
This switch segment is default set to Telemetry Bit Oriented Serial (TBOS) mode on
the diagnostics port. This is a non-proprietary network management protocol which
is common to some radio networks. The other selection is for factory use only. (see
Section 3.14.3)
PAGE 2-20
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LYNX DS-3 (45 Mbps)
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Enable
Aux Data
This switch segment allows the AUX DATA port to be optionally used as a clear
service channel for RS-232 or RS-422 (≤ 9600 baud) user data. The radio normally
"bridges" the AUX DATA port to the DIAGNOSTICS PORT for TBOS radio network
management.(see Section 3.14.4 or Appendix B)
Security
Code
This set of switch segments allow the user to select the security code for the radio.
Both ends of a radio system must be set to the same code. Users can protect
against nearby similar radios that might pose potential security. If these switches are
not matched on the radios, the DS-3 data is muted and the AIS LED will flash
rapidly. The selection of these switches does not improve immunity to interference.
(see Section 3.12.5 or Appendix B)
Loopback
Mode
This switch segment allows the user to select either the internal or an external test
DS-3 signal for the DS-3 loopback function. DS-1 data loopback is only external and
is not selectable. (see Section 3.12.4 or Appendix B)
Error
Unlatch
This switch segment selects an optional mode for the ERROR LED to flash for each
error occurrence (instead of latching on). This can be useful for short duration
loopback testing when the operator is located at the terminal site and watching for
errors. (see Section 3.13.3 or Appendix B)
Line Build
Out
(DS-3)
This switch segment allows the user to adjust the DS-3 output signal to
accommodate cable lengths (from 0 to 450 feet or from 450 to 900 feet) to a DSX-3
interface. (see Section 3.12.3 or Appendix B)
Channel
Selection
This set of switch segments programs the radio to match the specific RF channel
corresponding to the RF filter set which has been installed. (see Section 3.12.1 or
Appendix B)
Address
There are two rotary switches which determine the radio's address (01 to 99). This
address is used for Orderwire signaling and for the DIAGNOSTICS port TBOS
address. (see Section 3.14.1)
Refer to Appendix B for Switch Settings
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INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
2.5
Installation Accessories
The Lynx DS-3 radio is shipped with several accessories commonly required for the radio as
described below:
AC Power
Supply
If ordered as an option, this power supply provides AC to DC conversion for use
with AC powered locations.
AC Power
Cord
This power cord connects the AC Power Supply, if ordered, to a standard 115V
U.S. AC outlet.
Rack Mount
Brackets
Two brackets (along with required mounting screws) are provided which allow 19inch rack mounting of the Lynx DS-3 radio.
Terminal
Connector
This is a 6-pin mating connector used for DC power supply.
Connector
9-pin
Six (6) of these mating connectors are provided. Three of them are used for the
DIAGNOSTICS port interface, the AUX DATA port, and the DS-1 (T1) data
interface. The remaining extra connectors may be used as spares.
Connector
25-pin
There are 2 mating connectors provided, one for the ALARM interface and the
other for the VF interface.
Modular
Connector
Up to 4 of these 8-pin modular mating connectors are provided. These connectors
are to be used for the DS-1 connection at the DS1 INTERFACE (RJ-48C).
RF Power
Adjustment
Cover
A small plastic cap is provided which is placed over the RF output power
adjustment receptacle once output power has been set by professional installation
personnel.
Other accessories are available, such as orderwire handsets, connector adapters and special
cables. These can be ordered separately upon request.
PAGE 2-22
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LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
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Your Notes on the Lynx DS-3 Radio
SECTION 2: PRODUCT DESCRIPTION
PAGE 2-23
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
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3. Installation & Adjustments
3.1
Shipping Container
The equipment is shipped in boxes unless ordered as an integrated system and configured at the
factory, in which case the equipment may be racked and shipped in a crate. The equipment is
packaged so as to prevent damage in transit.
The boxes should be left intact and sheltered until arrival at the installation site.
If the shipping container shows signs of damage, the
transportation company should be notified immediately. Extra
care and inspection of the contents is advised immediately upon
receipt.
It is recommended that all the packaging materials be retained.
In the unlikely event that the equipment must be returned to the
factory, use the original packing materials for return shipment.
The original packaging materials are also recommended
for transporting the equipment from location to location.
Inside the primary shipping containers, internal boxes may contain other items. These boxes
should also be saved for future use.
Also, save the Lynx DS-3 test data sheet that is provided. The
test data sheet can be placed where the Lynx DS-3 terminal will
be installed for future quick reference. This sheet could also be
placed in the front pocket of this manual, and the manual kept
at the radio location for future reference. All Lynx DS-3 units are
individually tested and the actual measured performance
recorded on the Factory Test Data Sheet. You will find this
information to be of use during installation, troubleshooting and
maintenance.
A set of quick installation instructions is also provided which can be useful for easy reference
during installation.
SECTION 3: INSTALLATION & ADJUSTMENTS
PAGE 3-1
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
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3.2
Packing Items Identification
The primary shipping container houses the radio and an additional box. The box contains several
related items inside including:
PAGE 3-2
❖
This manual
❖
Installation accessory kit (see Section 2.5)
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LYNX DS-3 (45 Mbps)
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3.3
Before Installation Task List
There are several tasks that should be accomplished prior to installing the Lynx DS-3 radio
system. This section briefly describes the following:
- Site selection
- Line-of-Sight and Path Clearance determination
- Anticipated RSL calculation
- Fade margin calculation
- Availability calculation
- Frequency plan determination
- Power supply planning
- Antenna (and accessories) purchase
Only directional antennas may be used with Lynx DS-3 radios.
The Lynx Product Guide provides a more comprehensive
description of these tasks.
SECTION 3: INSTALLATION & ADJUSTMENTS
PAGE 3-3
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
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3.3.1
Site Selection Requirements
The radio site must have:
- access to the appropriate power
- close proximity to the telephone or computer system you wish to interconnect
- line-of-sight to the other radio location with adequate clearance
- location for mounting the antenna
PAGE 3-4
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INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
3.3.2
Line-of-Sight and Path Clearance Guidelines
The Lynx DS-3 radios will not operate properly unless they have line-of-sight between their
corresponding antennas. The Lynx DS-3 radio transmission will not pass through trees or other
obstacles. Factors to consider include:
- Earth curvature
- Future growth of trees
- Height of buildings
In addition to the line-of-sight requirement, a well-engineered path will also have additional path
clearance to allow for signal loss due to partial obstructions, atmospheric ducting and ground
reflections. To maximize radio reception, 0.6 times the first Fresnel zone should be calculated and
this distance added to the path clearance (in addition to trees or buildings).
The Lynx DS-3 Product Guide should be consulted for further
detail on performing these calculations.
SECTION 3: INSTALLATION & ADJUSTMENTS
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LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
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3.3.3
RSL Calculation and Link Budget
In USA, effective isotropic radiated power (EIRP) limits apply in the
U-NII bands. Output power may need to be reduced for certain
short paths.
Maximum transmitter output power setting can be determined as follows:
Max Transmitter Power (dBm) = E – G + FL
where: E = 30 dBm for operation in the 5.25-5.35 GHz U-NII band
48 dBm for operation in the 5.750-5.825 GHz U-NII band
G = Antenna Gain
FL = Feeder Loss, including connectors
The received signal level (RSL) can be estimated using the following formula:
RSL (dBm) = Pout - FL1+ G1 + G2 - FL2 - Lp
where: Pout is the transmitter output power (in dBm)
FL1 is the feeder loss of the transmit side (in dB)
G1 is the gain of the transmit antenna (in dB)
G2 is the gain of the receive antenna (in dB)
FL2 is the feeder loss of the receive side (in dB)
Lp is the Path loss, defined by:
Lp (dB) = 96.6 + 20 log10F + 20 log10D
where: F = Frequency in GHz
D = Distance of path in miles
(Dmiles = Dkilometers x 1.609)
This link budget is very important for determining any potential problems during installation. If you
have calculated the expected RSL, you can see if it has been achieved during installation, and
troubleshoot if necessary.
PAGE 3-6
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LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
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3.3.4
Fade Margin Calculation
The fade margin is the difference between the actual received signal and the radio’s threshold.
Using the formula provided in Section 3.3.3, the anticipated RSL can be calculated. Compare this
RSL to the specified threshold of the Lynx DS-3 radio, which is shown in Section 2.2, and
calculate the fade margin as the difference between the two signal levels.
Refer to the Lynx Product Guide for additional information on
fade margin performance for various operational conditions.
Dispersive fade margin is another factor that many microwave path engineers may use to plan
their link budget. For the Lynx DS-3, the dispersive fade margin is 38 dB, typical.
SECTION 3: INSTALLATION & ADJUSTMENTS
PAGE 3-7
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
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3.3.5
Availability Calculation
Availability of the microwave path is a measure of the percent of the time that the link will operate
without producing an excessive BER due to multipath fading. In the absence of direct interference,
availability is affected by the following:
- Path length
- Fade margin
- Frequency (5.3 and/or 5.8 GHz in the case of the Lynx DS-3 radios)
- Terrain (smooth, average, mountainous)
- Climate (dry, temperate, hot/humid)
Depending on the type of traffic carried over the link, the system designer may wish to design for
a specific availability. For example, if the data or voice traffic that is carried by the radio is critical
then it may be designed for a very high availability (e.g. 99.999% or 5.3 minutes of outage per
year). To improve availability, for example, the fade margin can be increased by making the path
shorter, or by using higher gain, narrower beam antennas in conjunction with lower loss feeders
(by using high quality transmission line or shortening feed length).
Refer to the Lynx DS-3 Product Guide for additional
information on percentage availability performance for various
operational conditions.
PAGE 3-8
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INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
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3.3.6
Frequency Plan Determination
When configuring radios in a hub or repeater configuration, careful engineering of the Lynx DS-3
radio frequency plans and antenna locations should be performed in order to minimize potential
interference between the nearby radios. As a rule of thumb, do not place identical frequency plan
radios (e.g. two “A” channel radios) at the same site. In most cases, it is desirable to use a
different frequency plan (e.g. A versus B), this is available in the dual band (5.3/5.8 GHz) Lynx
DS-3. However, with careful engineering, placing more than one radio of the same frequency
channel plan at the same site can be accomplished. In fact, the Lynx DS-3 frequency plan is
designed to allow complex hub configurations that may require re-using the same frequency plan.
When designing these types of configurations, antenna size and antenna location are critical. If
identical channel plans must be used at the same site, the same radio channel (e.g. A1 and A1)
should be used at a site to minimize interference. Using alternate channels (e.g. A1 and A2) is
less likely to be successful (and therefore not recommended) due to the high level of transmitter
to receiver isolation required from the antenna system.
Sometimes it is required to locate the Lynx DS-3 radio nearby a transmitter that is the same as, or
close to the Lynx DS-3 receive or transmit frequencies. In this case, the Lynx DS-3 terminal that
should be placed closest to this interfering transmitter should be the specific terminal with the
receive frequency which is furthest from this unwanted transmitted frequency. This approach
minimizes the potential of interference. While interference conditions are rare when using the
Lynx DS-3 radios, cases of interference may be overcome by exchanging the radios from end to
end or simply reinstalling the filter unit, as described in Section 4.2 (thus swapping the frequencies
of both ends of the radio link). In some cases, changing frequency plans (e.g. from A to B) can
also help mitigate any interference.
Section 4.8 of this manual
countermeasures in further detail.
describes
interference
Single band Lynx DS-3 (5.8 GHz) operates using one
frequency pair (channel A1, A2). Dual band Lynx DS-3
(5.3/5.8 GHz) operates using two frequency pairs (A1/A2 and
B1/B2).
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LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
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3.3.7
Power Supply Planning
The Lynx DS-3 radio must have access to a supply of appropriate power, either DC or AC (if the
AC adapter option has been ordered). The Lynx DS-3 can be powered from a DC battery system,
or from a solar or generator power plant, usually with battery reserves. Typically either a positive
or negative ground 24 or 48 volt supply is used.
Before installing the radio, plan for the continuous power consumption needs in accordance with
the specifications given in Section 2.2 of this manual. It is also wise to plan for backup power for
critical communication circuits (including the Lynx DS-3 radio). Backup power allows the radios
and associated equipment to continue operation when primary power is interrupted.
PAGE 3-10
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INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
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3.3.8
Antenna Planning
Using the path planning tools and equations presented in the Lynx DS-3 Product Guide, proper
antenna size can be determined which will yield the desired path performance. In general, the
larger the antenna that is used with the Lynx DS-3 radio, the better the link will perform. Larger
antennas have narrower beamwidth and higher gain, which will yield better link performance
(higher fade margin, better availability) and improve immunity to interference (due to the smaller
beamwidths). However, larger antennas are more costly to purchase and install than smaller
antennas, in some cases requiring special equipment for installation. All of these factors should
be taken into consideration when selecting an antenna. Consult the Lynx DS-3 Product Guide for
more details on selecting antennas.
Recommended Antenna
Size
2 ft
4 ft
6 ft
8 ft
10 ft
Gain / 3 dB Beam Width
29 dB / 6°
35 dB / 3°
38 dB / 2°
41 dB / 1.5°
43 dB / 1.3°
In areas where transmitted output power restrictions apply, the
use of larger antennas will maintain the benefit of narrow
beamwidths and receive gain. However, output power may need
to be reduced to meet regulations. (See Section 3.13.1)
Prior to installation, the specific antenna location and mounting should be determined. This
advanced planning also yields the transmission line requirements.
Only directional antennas may be used with Lynx DS-3
radios.
SECTION 3: INSTALLATION & ADJUSTMENTS
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LYNX DS-3 (45 Mbps)
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3.4
Tools Required
The following tools may be required for the installation of the Lynx DS-3 radios:
- Phillips (cross tip) screwdrivers (for 19-inch rack mounting and attachment of brackets)
- Small blade standard screwdriver (for power supply connector and RF output power
adjust)
- Soldering iron (if using any D-type connectors)
- Wire strippers (for removing insulation from power supply and other wiring)
- Digital Voltmeter (to measure RSL, Tx output power, Alarms)
The following tools are recommended for the installation of the Lynx DS-3 radios:
- RF power meter (to measure transmitter output power)
- Cellular phone or two-way radio (for talking with far-end crew and tower crew)
- Bit Error Rate test set (to test link after installation)
- Touch-tone Telephone* (to test orderwire circuits and for communication with far-end)
Additional tools will likely be needed for antenna and transmission line installation and antenna
alignment. Consult Sections 3.8 through 3.10 of this manual for more details.
*Telephone connection specifications:
REN (Ringer Equivalency Number)
1.0 B
Ringing Voltage
48 VDC, typical
(Ringing voltage is adequate for modern solid state ringers,
NOT for the older mechanical type ringers)
PAGE 3-12
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LYNX DS-3 (45 Mbps)
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3.5
Frequency Channel Plans
The Lynx DS-3 offers several non-overlapping channel plans for the different models of radio.
This channel plan arrangement allows users to implement Lynx DS-3 in the proximity of other
Lynx DS-3 radios (planned or unplanned), hub and repeater applications, and can be used to
mitigate interference. The channel plans are illustrated below in Figures 3-1 through 3-5. Section
4.2 and 4.3 describe how to change frequency channel assignments of a Lynx DS-3 radio.
A1
5,725
A2
5,750
5,800
5,825
Frequency (MHz)
Channel Pairs
A1
A2
TX: 5,750 MHz
→
RX: 5,750 MHz
RX: 5,800 MHz
←
TX: 5,800 MHz
Figure 3-1: Channel Plan, 5.8 GHz (Single Band)
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5,250
A1
B1
5,284
5,316
A2
B2
5,759
5,791
5,825
Channel Pairs
A1
TX: 5,284 MHz
RX: 5,759 MHz
→
←
A2
RX: 5,284 MHz
TX: 5,759 MHz
B1
TX: 5,316 MHz
RX: 5,791 MHz
→
←
B2
RX: 5,316 MHz
TX: 5,791 MHz
Figure 3-2: Channel Plan, 5.3/5.8 GHz (Dual Band)
PAGE 3-14
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3.6
Mounting the Lynx DS-3
The Lynx DS-3 can be mounted at any height in a standard 19-inch rack. Blank rack-mounting
spaces above and below the Lynx DS-3 are recommended, especially if the surrounding
equipment dissipates a considerable amount of heat (over 50W).
The Lynx DS-3 may be set up for mounting with the front edge projecting from the front face of a
standard 19-inch rack using the rack mounting brackets enclosed with the screws in the
Accessory Kit (4 per bracket). The rack mounting brackets may be reversed, in order to install for
flush or cabinet mounting if preferred. Depending on rack configuration, it may be necessary to
remove the four adhesive backed rubber feet on the bottom of the unit.
The Lynx DS-3 has internal fans which intake and exhaust on
the left and right sides of the chassis. When rack mounting, it
is important to leave a small gap between the outer edges of
the radio and the inside edge of the rack.
The Lynx DS-3 may alternatively be placed on a table or shelf
attached to a wall. Because of the low weight of the Lynx DS-3,
any mounting option other than rack mounting will be less secure.
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3.7
Power Connection and Wiring
There is no ON/OFF switch on the Lynx DS-3. As soon as
power is applied, the equipment will be operational. This
means that there can be up to 1W of RF power present at
the antenna port. The antenna port should be terminated
before power is applied.
Power is connected using the DC power plug contained in the Accessory Kit. Use Table 3-A or 3B along with the associated diagram of Figure 3-5 or 3-6 to connect the DC power cables. For
example, for a negative DC power input, use Table 3-A and Figures 3-4, 3-5 and 3-6.
NEGATIVE DC POWER INPUT
(–20 TO –63 VDC)
PIN
FUNCTION
Power (–DC)
Ground (see figure 3-5)
Return (+DC)
Return (+DC)
Ground (see figure 3-5)
Power (–DC)
Table 3-A: DC Power Connection for Negative Supply
POSITIVE DC POWER INPUT
(+20 TO +63 VDC)
PIN
FUNCTION
Return (–DC)
Ground (see figure 3-6)
Power (+DC)
Power (+DC)
Ground (see figure 3-6)
Return (–DC)
Table 3-B: DC Power Connection for Positive Supply
Pins 1 and 6 are connected together on the motherboard. Either
pin may be used to apply (-DC) DC power input. Similarly, pins
3 and 4 are connected together on the motherboard and may
be used to apply (+DC) DC power input.
For DC power return connection, connect to the opposite
voltage (either the -DC or the +DC Pin) and connect the return
to ground at the DC power plug on pins 2 and/or 5.
PAGE 3-16
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3.7.1
DC Power Wiring
Connect the power cable with adequate current rating (minimum of 20 AWG) to the terminals
shown on the removed (not plugged into the radio) DC power plug using the screw connections.
The recommended minimum current rating of external fuses and cables is 3 Amps. The Lynx DS3 radios consume less than 1 Amp at ±48V and less than 2 Amps at ±24V.
Each Lynx DS-3 terminal should be externally fused separately
with a 5 Amp maximum fuse.
If using negative power, connect the negative voltage to pins 1 or 6. Connect the ground return
connection to pins 3 or 4. See Figure 3-6.
If using positive power, connect the positive voltage to pins 3 or 4. Connect the ground return
connection to pins 1 or 6. See Figure 3-7.
The ground connection is available at pins 2 and 5. Either pin may be used to ground the return
side of the power supply. Do not ground both sides of the power supply.
Proper grounding, either through the chassis and/or the power
supply, can be very important for protection from lightning. A
grounding screw hole is provided on the rear panel.
The ground connection may be left floating if the power supply
is referenced to ground externally and to avoid ground loops in
some configurations. However, this may not provide adequate
grounding for lightning protection.
Use a DVM (digital voltmeter) to verify voltage and polarity on the DC power plug.
Do not connect the DC power plug to the rear of the Lynx DS-3
terminal until a load is connected to the antenna port (either an
RF pad, or an RF cable and antenna).
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Figure 3-3: Negative Voltage DC Connection
Figure 3-4: Positive Voltage DC Connection
Make sure that when connecting the mating plug that it is
properly oriented (terminal screws pointing up) and securely
fastened.
PAGE 3-18
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3.7.2
AC Power Connection
The optional AC power supply operates from any AC voltage 100V - 250V and 50 Hz or 60 Hz.
The AC supply is equipped with a mating connector that plugs directly into the Lynx DS-3 and an
AC cord with a 3-pin AC plug. The AC cord color code is shown in Figure 3-8 in case users wish
to replace the AC plug supplied with a different type of plug.
Figure 3-5: AC Connection
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3.8
Antenna Connection
The Lynx DS-3 is equipped with an N-type female connector at the antenna port located on the
rear panel. A short length (~6 feet) flexible jumper coaxial cable (or “pigtail”) that is rated for up to
6 GHz and fitted with two N-type male connectors can be used to connect the antenna port to the
antenna transmission line (see Section 3.9).
A low loss 50-ohm cable (for example LDF4-50 1/2 inch coax) or EW-52 (using a N-type female to
waveguide adapter) is recommended for the antenna transmission line between the top of the
rack and the antenna. The return loss presented by the transmission line at the top of the rack
should be as high as possible (20 dB, minimum recommended). The length of the antenna
transmission line should be kept as short as possible (to minimize losses).
To minimize feeder losses, the use of 5.8 GHz elliptical waveguide is recommended (typical loss
is 1.25 dB/100 ft) for feeder lengths in excess of 200 feet. Depending on path length and feeder
length, 1/2 inch coax cable can be used as well.
For the Lynx DS-3, 1/2” or 5/8” coaxial cable (LDF4-50 or
LDF4.5-50) is recommended. Coaxial cable 7/8” or larger can
exhibit moding at 5.8 GHz and is not recommended for 5.8 GHz
radios. For waveguide transmission line at 5.8 GHz, EW-52
waveguide is recommended. EW-63 will also work, but may
exhibit more loss.
Do not use right angle N-type connectors with the 5.8 GHz Lynx
DS-3 radios: they may present high loss at 5.8 GHz. Do not use
a low quality N-type jumper cable with the Lynx DS-3. Some
cable types, such as RG-8, may have high loss at 5.8 GHz.
PAGE 3-20
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3.9
Transmission Line Connection
The transmission line feeder (such as LDF4-50 1/2 inch coax cable or EW-52 elliptical
waveguide) should be prepared first by cutting to the approximate length (allowing some excess)
and installing the appropriate connector on the antenna end.
The prepared transmission line is then pulled through the cable ducts, trays or conduit (as
required) to the antenna, while being careful not to kink or damage the transmission line in any
way.
The transmission line should be supported in a tray on horizontal runs and by hangers on vertical
runs. Hangers should be spaced according to the manufacturer’s instructions (typically every 5
feet under conditions of no ice and not greater than 85 mph winds).
The transmission line should be grounded using the manufacture’s recommended grounding kit.
Grounding kits attach to the outer copper conductor. Grounds must be installed at the antenna, at
the bottom of the tower (if applicable) and where the transmission line enters the building. Long
transmission line runs should be grounded every 100 feet. In areas of high incidence of lightning,
dissipaters should be attached to antennas. In addition, coaxial, in-line, spark-gap type, lightning
suppressors should be added at the bottom of the coax cable before entering the
building/enclosure.
Any in-line lightning protection device must be rated for the
operating frequency of the Lynx DS-3 (5.3 /5.8 GHz).
After installation, the transmission line is terminated with an N-type male connector/adapter
attached at the equipment end. For waveguide, this typically requires a CPR-to-N adapter.
Prior to operation, the electrical integrity of the transmission line, including all connectors, can be
checked with a simple DC check between the center conductor and outer conductor. (This is
neither possible, nor required for waveguide).
The transmission line should ideally be connected directly to the antenna at one end and to the
Lynx DS-3 antenna port at the other end. However, short RG-214 type pigtail jumper cables may
be required to avoid sharp bends in the transmission line to limit stress on either connection.
7/8 inch coax cable or larger is not recommended for use at 5.8
GHz and higher frequencies.
Do not use right angle N-type connectors with the 5.8 GHz Lynx
DS-3 radios: they may present high loss at 5.8 GHz. Do not use
a low quality N-type jumper cable with the Lynx DS-3. Some
cable types, such as RG-8, may have too high a loss at 5.8
GHz.
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3.10 Antenna Installation & Alignment
Antennas used for this device must be fix-mounted on permanent outdoor
structures to provide 5 meters or more separation from all persons during
device operation to comply with FCC RF exposure requirements. Please
contact Western Multiplex factory for applicable gain and type restrictions to
ensure compliance.
The antenna installation consists of mounting the antenna on the tower, building roof, or other
location that provides line-of-sight path clearance to the far-end location. In general, antennas
smaller than 4 feet diameter are not recommended for urban areas due to their wider
beamwidths, which results in higher interference susceptibility. For Lynx DS-3 radios, a minimum
of 2 foot (0.6m) diameter (10° beam width) antennas is recommended.
Antennas should be ordered with a suitable mounting kit specific to the site requirements. For
example, specifying round or angle tower leg adapters, or a roof tripod as necessary.
The antenna must be very rigidly mounted, with adequate room for azimuth and elevation
adjustment.
The antenna polarization must be the same at both ends of the link, either vertical or horizontal.
In general, antenna mountings require a support pipe to which upper and lower support brackets
are attached with “U” bolts. The antenna and optional elevation and azimuth adjustment rods are
then mounted onto the support brackets. The whole structure must be adequately grounded for
lightning protection. The antenna system must always be installed according to the manufacturer’s
instructions.
Unless special test equipment is available, two operating Lynx DS-3 terminals are required to
align the antennas. Alternatively, a CW generator may be used to transmit a signal toward the end
under alignment.
The antenna is coarse aligned using visual sighting and then fine aligned using the receive signal
level (RSL) voltage of the Lynx DS-3.
The RSL voltage reading can still be used to peak antennas
even if the radios have not synchronized, however far-end RSL
cannot be measured from the near-end terminal until radios
are synchronized.
To coarse align the antenna, first set it for flat elevation (no up or down tilt) using a spirit level.
Then point it at a heading marker obtained using a compass back-bearing from an adjacent
location, (ideally, 100 feet or more away from the antenna).
If a heading marker cannot be set sufficiently far away (for example when on a city building roof or
looking through a window) then a rough azimuth setting can be obtained by sighting along the
antenna feed.
PAGE 3-22
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It should be verified that both antennas are on the same
polarization by using the manufacturer’s instructions. Otherwise
the RSL will be approximately 25 to 30 dB below the calculated
level.
Most antennas will also need fine alignment obtained using an operating link because it is very
important to maximize the receive RF signal level at each end of the radio link.
Read Section 3.7 before applying DC power to the Lynx DS-3.
Once the coarse alignment has been set-up at both ends, then the link can be powered and some
level of reliable communication established. The voltage at the Lynx DS-3 front panel RSL test
point should be measured with a DVM to determine the relative receive RF signal level.
For the fine alignment, adjusting first the azimuth and then the elevation of the local antenna will
maximize the RSL signal level. Then the far antenna is aligned in the same way, using the RSL
voltage of its local Lynx DS-3. Higher negative voltage corresponds to weaker RSL.
When aligning antennas it may be convenient to run two wires from the RSL and ground test
points to the antenna so that the voltmeter reading is directly visible to the technicians aligning the
antenna. Also, a cellular telephone or two-way radio may be useful for coordinating alignment
activities between both ends of the link. Once the radios are coarse aligned and synchronized, the
built-in orderwire phone service can also be used to coordinate alignment between both ends of
the link.
An orderwire telephone will provide end-to-end voice
communications once radios are synchronized. Synchronization
usually can be accomplished by coarse alignment only. After
synchronization, the orderwire phones can be used to communicate
between radio sites for antenna fine alignment. The phone
interconnect cable can be extended to the antenna when desired.
The larger the antenna size, the more critical alignment becomes: for example, with a 2 foot dish,
the antenna can be moved ±3 degrees off the correct heading before the receive signal level
drops by 3 dB. This compares with a 6-foot dish which may only be moved ±1 degree for the
same degradation.
The graph shown in Figure 3-9 shows the typical variation of RSL voltage as the receive signal
level is increased from threshold to a higher level. There is some variation between Lynx DS-3
receivers, but an approximate estimate of the potential RSL value may be made using this figure.
Use the Factory Test Data Sheet shipped with your Lynx DS-3 terminal to
obtain the best estimate of your RSL.
Above -5 dBm RSL, the receiver may produce errors: however this level is rarely likely to be
exceeded. A link budget calculation should be made to calculate the anticipated RSL as described
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in Section 3.3.3. During anomalous propagation conditions, the RSL may fade but will not
increase up more than 10 dB (except in unusual very long paths which may fade up by 15 dB).
Antenna alignment should enable the RSL to be peaked to the
level calculated in the link budget. If the RSL is peaked but is
approximately 20 dB below the calculated level, then it is likely
that the antennas are aligned on a sidelobe of the antenna's
radiated signal. In this case, the antennas should be rotated in a
wide arc until the main lobe is located. (Other possible causes of
low RSL are path obstructions, loss in connectors, adapters and
pigtail jumper cables or different antenna polarization at each end
of the link.)
Tsunami 100BaseT Dual & Single Models
1.00
0.90
0.80
0.70
0.60
Volts
0.50
0.40
0.30
0.20
0.10
0.00
-80
-75
-70
-65
-60
-55
-50
-45
-40
RSL (dB)
Figure 3-6: Typical RSL Voltage versus Received Signal Level (RSL)
PAGE 3-24
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3.11 DS-3 and DS-1 (T1) Interface Connection
The DS-3 interface connections at the rear panel of the Lynx DS-3 radio are BNC female, 75 Ohm
impedance.
The DS-1 interface connection to the Lynx DS-3 is on the rear panel. The transmit and receive
signal pairs are wired at the same 9-pin, D-type subminiature connector (See Figure 3-10 for pin
connections). An 8-pin modular jack (RJ-48C) style connector is also available for DS-1
connections (See Figure 3-11 for pin connections).
The 9-pin, D-type subminiature connector on the Lynx DS-3 is a female connector. A mating male
connector should be wired with twin shielded twisted pair cable. Note that the shield must be wired
to pin 2 or pin 4 on the radio end of the cable for grounding and not left floating.
Additional external lightning protection devices are
recommended for the DS-1 connections if the radio is
installed in an area prone to lightning.
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Figure 3-7: DS-1 Connection, 9-pin connector
Figure 3-8: DS-1 Connection, Modular Connector (RJ-48C)
❖
❖
❖
PAGE 3-26
View from female socket at rear of shelf.
“Line transmit out” is the output from the Lynx receiver, sent into
the DS-1 line.
“Line receive in” is the input to the Lynx transmitter being received
from the DS-1 line.
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3.12 DIP Switch Settings
A quick reference guide to all DIP switches is provided in Appendix B.
DIP switch settings are noted by their position, either up (1), or down (0),
not by on/off as may be printed on the DIP switch assembly.
3.12.1 Channel Selection
The single band Lynx DS-3 offers one channel plan, while the dual band Lynx DS-3 offers two
channel plans, i.e. A1/A2 and B1/B2 (see Section 3.5). There are DIP switch segments (numbers
6 through 8 on SW3) which define the frequency channel plan of the Lynx DS-3 radio (refer to
Appendix B). The DIP switches must be set to match the filter assembly that is mounted on the
radio. For single band model, switch position 8 on SW3 determines the channel. For dual band
model, switch positions 6, 7, and 8 on SW3 determine the channel (refer to Appendix B).
Radios are shipped from the factory with their DIP switch segments set to match the installed
filter.
The radio channel selection is user adjustable by removing and replacing, or reversing the filter
assembly. This allows units of the same radio model to be used as spares for both channel plans
in the case of dual band Lynx DS-3.
The DIP switch setting must match the filter assembly mounted on the
radio. Also, both radios of a link must have opposite channel plans (e.g.
A1 and A2).
Consult Section 4.2 of this manual for more information on changing RF
channels. Consult Appendix B for proper frequency channel switch
settings.
Other NON-standard frequency plans may be offered in the future. In
these cases, follow the DIP switch setting on the filter label.
Switch positions 4 and 5 on SW-3 are used for other parameters on the
Lynx DS-3.
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3.12.2 Line Code Selection
The DS-3 line code is B3ZS and is not selectable. The standard factory selection for DS-1 line
code is Bipolar with 8 Zero Substitution (B8ZS). Should the Lynx DS-3 be required to be
transparent to an Alternate Mark Inversion (AMI) coding format of the DS-1 data stream, the line
code selection controlled by DIP Switch segments on the rear panel will need to be changed. If a
B8ZS code is fed to the Lynx DS-3 while configured for AMI, bipolar violations will exist and errors
will be present in the line transmit output signal (DS-1). If an AMI code is fed to the Lynx DS-3
while configured for B8ZS, bipolar violations will exist, but in this case, no errors will be present in
the line transmit output signal (DS-1).
To change the line code selection from B8ZS to AMI, DIP switch segments will need to be
changed. Switch segment 3 on SW1 selects AMI or B8ZS for Channel 1 input. This is an out-ofservice adjustment. See Figure 3-12.
SW1 (REAR PANEL OF LYNX DS-3)
AMI
B8ZS
Figure 3-9: Line Code Switch
PAGE 3-28
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3.12.3 Line Build Out Selection
Line build out accommodates different lengths of interconnecting cable for the DS-3 and wayside
DS-1 (T1) connection. The standard factory selection for line build out (LBO) is 0-125 feet for DS1 and 0-450 feet for DS-3. Interconnecting the Lynx DS-3 with other equipment with a cable length
greater than the length allowed by the standard LBO setting will require an LBO change. Changing
LBO is an out of service adjustment.
To change the LBO strap selection from 0-125 feet to a different length, select the position of the
DIP switch segments as shown in Figure 3-13. SW1 segments 1 and 2, and SW3 segment 3 can
be selected for different DS-1 and DS-3 LBO’s, respectively.
SW1 (REAR PANEL OF LYNX DS-3)
DS-1 LBO
0-125 feet
125-250 feet
250-400 feet
400-655 feet
SW3 (REAR PANEL OF LYNX DS-3)
DS-3 LBO
0 - 450 feet
450 - 500 feet
Figure 3-10: Line Build Out (LBO) Switches
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3.12.4 Loopback Test Signal Selection (DS-3 only)
The Lynx DS-3 allows loopback operation using an internally generated test DS-3 signal or using
an externally generated test DS-3 signal. DIP switch segment SW3-1 selects external vs internal
DS-3 test source. The DS-1 loopback is done using ONLY external test source. See Figure 3-14.
The factory setting for DS-3 loopback mode is internal.
SW3 (REAR PANEL OF LYNX DS-3)
DS-3 Loopback
Internal Test Signal
External Test Signal
Figure 3-11: Loopback Mode Selection
PAGE 3-30
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3.12.5 Security Code Selection
The security codes on radios in a hop must be matched, otherwise the two radios will not
recognize one another and will not communicate. The security code can protect the unit against
one that is not of the same security code by not communicating with that radio. Different codes
can be selected using the SW2 DIP switch segments 1 through 8 on the Lynx DS-3 rear panel.
The security code must be the same for both ends of a radio
link.
The factory setting for security code DIP switches is down. are all set in the factory to code 0.
Should the code need to be changed, then both ends of the link must be changed/set identically.
Changing the security code is an out-of-service adjustment. See Figure 3-15 for DIP switch
segment settings. When security switches on the two radios are not matched, AIS alarm on the
front panel would be flashing and the DS-3 data will be muted.
SW2 (REAR PANEL OF LYNX DS-3)
Figure 3-12: Security Code Selection
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3.12.6 Input Alarm (Data Loss) Enable/Disable
The Lynx DS-3 provides a capability to enable or disable input alarms (Data Loss). On the front
panel and over the alarm and diagnostic interfaces, an alarm condition is normally generated if
there is no input DS-3 or or no input DS-1 data signal to the radio. For example the Lynx DS-3
radio may have been installed in a location where wayside DS-1 signal is not in use. In this case, it
may be desirable to disable the input alarm to the wayside DS-1 channel so that local and remote
alarms are not regularly generated by the (known) lack of this data input. When the network is
later expanded to include traffic on the wayside DS-1, this switch can be set to enable the input
data alarm condition. See Figure 3-16 for DIP switch segment settings.
The factory setting is for all input alarms enabled.
When a DATA LOSS alarm condition occurs, the Lynx DS-3
will inject AIS into the incoming DS-3/DS-1 data stream, even
if the input alarms have been disabled.
SW1 (REAR PANEL OF LYNX DS-3)
DS-1
SW1-4
Input Alarm Enabled
Input Alarm Disabled
DS-3
SW1-5
Input Alarm Enabled
Input Alarm Disabled
Figure 3-13: Input Alarm Disable Switch
PAGE 3-32
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3.12.7 AIS Enable/Disable
AIS (Alarm Indication Signal) is the blue code (all 1’s) that keeps the digital line interface active
under data loss conditions. AIS is required by certain equipment to maintain synchronization (for
example, it is required on all leased line circuits). However, it is not required by all equipment (for
example, a CSU/DSU will initiate its own blue code to the line under data loss conditions).
Under test conditions, when measuring receive threshold, for example, it may be necessary, to
disable AIS to facilitate BER measurement.
There is a user selectable DIP switch segment on the rear panel of the Lynx DS-3 that includes
selection of the AIS function (on/off) at the receiver line output. When the AIS is selected (on), the
DS-1 or DS-3 signal will send blue code to the line when the received BER on either signal
exceeds 1 x 10-3. This function is similar to a data “mute” function. When the AIS is disabled (off),
no insertion of data will take place unless an RX SYNC alarm condition occurs. The AIS switch
operates on DS-1 and DS-3 simultaneously. Refer to Figure 3-17 for DIP switch segment
information.
The standard factory setting is to have the demodulator AIS alarm selected ON because it
prevents a severely errored signal (possibly unsynchronized) from being sent out to the line.
It is recommended that AIS be selected ON for normal operation.
It is recommended that AIS be selected OFF for measuring BER
at threshold.
This DIP switch does not affect AIS injection into the
transmitted data stream upon a DATA LOSS condition.
SW1 (REAR PANEL OF LYNX DS-3)
AIS
SW1-6
ON
OFF
Figure 3-14: AIS Switch
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LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
3.13 System Turn-up to Service
1.
Prior to installing the system, it may be desirable to perform a back-to-back test of the Lynx
DS-3 radio pair. Consult section 4.9 for further details. Back-to-back testing is a simple way
to verify that the Lynx DS-3 radios are fully operational before they are installed. Installation
adds several variables (such as antenna alignment) which can lead to system turn-up
delays. Also, during back-to-back testing, the DIP switch settings and some connections
can be tested. This step can eliminate a majority of troubleshooting once the radios are
installed.
A cellular phone or two-way radio system (walkie talkie, CB,
mobile radio) can be very useful during installation. These
can be used for temporary near-end and far-end
communications between the installation personnel at one
site and installation personnel at the other site while
installing the system. These can also be helpful for
communication between a person at the top of a very tall
tower and ground personnel.
The Lynx DS-3 incorporates an internal Orderwire feature
that provides end-to-end “telephone” style communications.
However, the link must be partially operational to use this
feature. In lieu of, or in addition to the use of cellular phones
or two-way radio, this Orderwire feature can also be very
useful for installation, but typically cannot be put into service
until step 8 or 9 of this procedure is completed. See Section
3.14.1 for more details.
2.
Perform a general alignment of the antennas on both ends of the path using binoculars,
compass or other related tools. It is important to have the antennas aligned as accurately
as possible before putting radio traffic over the link. This will help in getting the system
running more rapidly. See Section 3.10 for more details.
3.
Connect the transmission line to the antenna, and feed it to the Lynx DS-3 radio location
(see Section 3.9). Connect the opposite end of the transmission line to the N-type female
connector located on the filter assembly which occupies the top half of the Lynx DS-3 rear
panel. The connection must be terminated into an antenna or a load before DC power is
applied to the radio.
4.
Verify that DIP switch settings for frequency channel selection match that of the filter that
is installed on the rear of the radio. Consult 3.12.1 for further details. The far-end radio
must have the same channel plan (e.g. A, B) as the near-end radio, and the opposite Tx
and Rx frequencies (e.g. A1 and A2 make up a matched pair of radios).
5.
Verify that the DIP switch settings for security code selection are the same for both ends
of the radio link (see Section 3.12.5).
6.
With the DC power source active, but not plugged into the Lynx DS-3 radio, using a
voltmeter, confirm that the DC mating connector has the proper power connections in
accordance with Section 3.7. Verify the polarity and the absolute voltage on all pins. Verify
ground connection for power.
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LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
7.
Connect power to the Lynx DS-3 radio. Verify that the Front Panel “ON” LED indication is
illuminated. This confirms that power has been properly applied.
Ensure that the RF Antenna port connection is properly
terminated before applying power to the Lynx DS-3 terminal, as
in step 3.
When the Lynx DS-3 radio is initially powered-on, some alarm
conditions may be present. This is normal and alarms can be
ignored at this time.
8.
Place a voltmeter across the GND and PWR front panel test points. See Figure 3-18 and
3-19 for voltage setting information and Table 3-C for typical output power levels for given
cable lengths where EIRP limits apply. Consult the Lynx DS-3 Product Guide for Path
Planning to establish proper level for this setting. If necessary, use a small screwdriver at
the front panel receptacle to adjust the output power of the local transmitter in accordance
with the path analysis calculations. The recessed potentiometer is rotated clockwise to
increase transmit output power and counter clockwise to decrease transmit output power.
After verifying correct setting of the transmit output power, disconnect the voltmeter.
Place the cover cap found in the installation accessory kit over the front panel receptacle.
The Lynx DS-3 requires professional installation. With some
Lynx DS-3 models, in certain countries, there may be Effective
Isotropic Radiated Power (EIRP) limits which dictate the
maximum output power that the Lynx DS-3 radio can transmit
given the transmission line loss and the gain of the antenna.
Consult with appropriate government agencies or Western
Multiplex if there is any question regarding maximum output
power allowed.
In the USA, 5.8 GHz models may be operated at full power. 2.4
GHz models may require a power reduction of 1 dB from +30
dBm input power, as measured at the antenna feed, for every 3
dB that the antenna gain exceeds +6 dB. See Section 3.3.3 and
Table 3-D for more details.
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MARCH 2000
Transmitter Output
Voltage
(measured at the antenna
port)
(measured at the front
panel TX PWR test point)
+ 15 dBm
1.7
+ 10 dBm
0.6
+ 5 dBm
0.3
0 dBm
0.2
- 8 dBm (min)
0 volts
Figure 3-15: Typical RF Output Power versus PWR Voltage
Use the Lynx DS-3 Factory Test Data sheet to determine
more precisely the voltage corresponding to the RF output
power.
Use the Lynx DS-3 Factory Test Data sheet to determine
more precisely the voltage corresponding to the RF output
power.
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MARCH 2000
For precision measurement of transmit output power, it is best
to connect an RF power meter to the antenna port. The PWR
port voltage may not provide enough precision. This is
especially important where EIRP limits apply to the installation.
In cases of no EIRP limits, the radio transmitter output power
can be adjusted to maximum for installation, except for very
short paths using very high gain antennas, where excessive
power may not be advised.
Don’t forget that the RF output port should be terminated at all
times when power is applied to the Lynx DS-3 radio. Therefore,
disconnect power to the radio before connecting a power meter
and reapply power once connected. Often, an RF power meter
may have a limit to the input power that it can measure without
damage. It is advised to place a calibrated fixed value RF
attenuator (typically 20 dB or more) between the Lynx DS-3
radio and the power meter to assure proper operation and safety
for the RF power meter. The value of this fixed attenuation can
then be added to the value of the RF power meter reading to
obtain the actual Lynx DS-3 radio transmitter output power.
9.
Connect a voltmeter across the GND and RSL front panel test points. This
voltage reading corresponds to the Received Signal Level (RSL) of the near-end radio. In
other words, RSL is the “amount” of signal the near-end radio is receiving from the farend radio. Since the antennas have not been finely aligned, it is not expected at this time
that the RSL will indicate very high. However, at this point it can be verified that some
communication is taking place between the two Lynx DS-3 terminals. Use the RSL
voltage reading to align the antennas. Align one antenna at a time in accordance with
Section 3.10. Complete alignment of both ends of the radio link before going further.
The RSL voltage output on the radio's front panel will output a
voltage range over the full receiving capability of the radio
(approximately 0 VDC at 0 dBm to -0.8 VDC at threshold).
The Lynx DS-3 has a unique feature of allowing measurement of the far-end RSL from
the near-end radio. This is only possible if the Lynx DS-3 radios are communicating (the
RSL is above threshold). The far-end RSL can be used to verify that adjustments to local
antenna alignment are corresponding to the far-end radio reception. Far-end RSL is
measured by pressing and holding the DISPLAY FAR END front panel button. While this
button is held, the RSL voltage indicates the RSL of the far-end radio. RSL of both ends
should be verified to be within approximately 5 dB of predicted value (see Section 3.3.3).
There are several factors that can contribute to low RSL:
- Incorrect antenna alignment (aligned on a lobe and not on the main signal)
- Improper polarization alignment of antennas (horizontal vs. vertical)
- Transmission line problems (loose connections, bent or damaged cables, lossy
adapters)
- Path obstructions (trees, buildings, hills, etc.)
- Path clearance (line-of-sight, earth curvature, Fresnel zone, diffraction and partial
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obstruction)
- Weather (inversion layers, ducting and multipath)
- Antenna feed (coaxial/connector) problem
The Lynx DS-3 requires professional installation. Don’t forget
that the transmitter output power adjustment on the Lynx DS3 radio effects the RSL. Depending on EIRP limits (if any),
path distance, and antenna gain, you may need to adjust the
output transmit power to the proper level before putting the
radios in service.
If radio synchronization has been established, the radio link
may be able to provide some limited communications over the
link. It can be helpful to establish voice communications from
one end of the radio link to the other using the Orderwire
feature of the Lynx DS-3 radio. See Section 3.14.1 for details.
If RSL is lower than anticipated, recheck the path clearance and transmission line as these are
the typical causes of low RSL. Radio operations can be verified by connecting radios back-to-back
with attenuators (40-60 dB), (see Section 4.9). If the problem remains, consult Section 4 of this
manual for troubleshooting techniques which will help determine the source of the problem.
10.
Once RSL is verified to be near the predicted value, the radio link is ready for data. You
may verify error-free operation by using the loopback function, as described in Section
3.13.2 or BER testing, as described in Section 4.10. If the link is not error-free, see
Section 4.7 for troubleshooting guidelines.
11.
Once radio performance is verified and acceptable, with loopback mode turned off (press
the ENABLE button, the LED will turn off), the Lynx DS-3 radios can now be put into
service with the intended T1 traffic. Connect the T1 signal to the DS-1 Interface 9-pin D
connector or the RJ-45c connector. Refer to Section 3.11 for pin configurations of these
connections. With T1 traffic applied in both directions, all front panel LEDs, except for
POWER and any unused T1 ports, will be off. If LEDs are lit, consult Section 4 of this
manual.
12.
Now that the link is operational, other services can be connected including Orderwire,
Diagnostics, Alarms and Aux Data (Service Channel). Consult Section 3.14 for details on
these connections.
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LYNX DS-3 (45 Mbps)
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MARCH 2000
3.13.1 Output Power Adjustment
The Lynx DS-3 requires professional installation. In certain cases, it is necessary to adjust the
output power from the factory setting, for example:
❖
to meet EIRP (effective isotropic radiated power) limits.
❖
to avoid exceeding the maximum far-end RSL of 0 dBm.
❖
to coordinate a hub or repeater location.
To ensure maximum protection of the radio circuits, always
ensure the antenna connector is terminated when power is
applied.
For precise measurement of transmitter power, a calibrated RF power meter (such as the HP
435B with Power Sensor HP8481) is recommended. This power sensor can be connected directly
to the output of the radio without exceeding the power rating. With some power meters, it may be
necessary to place a calibrated in-line fixed attenuator between the radio antenna port and the
power meter so as to not exceed the power meter’s maximum input level. Thruline power meters
do not operate at Lynx DS-3 RF frequencies.
If adjusting the output power to meet an EIRP limit, it will be first necessary to calculate the overall
system gains and losses, including feeder losses for the type of transmission line installed and the
antenna gain, as shown in the Lynx DS-3 Product Guide. Also refer to Table 3-C or 3-D for
transmitter output power settings where installed with various transmission line lengths and
antenna sizes. You may determine the radio transmit power for EIRP limited installations by the
following equation:
Max Transmitter Power (dBm) = E – G + FL
where: E = 30 dBm for operation in the 5.25-5.35 GHz U-NII band
48 dBm for operation in the 5.750-5.825 GHz U-NII band
G = Antenna Gain
FL = Feeder Loss, including connectors
Output power may be adjusted using a small screwdriver and rotating the potentiometer which is
recessed behind the front panel. Clockwise rotation increases output power while counterclockwise rotation decreases output power.
In lieu of a calibrated RF power meter, the PWR test port voltage can be used to estimate the
output power. The factory test data sheet should be used to establish a more precise setting of
this adjustment.
After setting the correct output power, place the cover cap
(found in the installation accessory kit) over the front panel
receptacle.
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MARCH 2000
3.13.2 Loopback/BER Testing
When a pair of Lynx DS-3 radios are installed and communicating with each other, a loopback or
BER test can be performed to evaluate the link performance.
The Lynx DS-3 uses an internal test signal for DS-3 loopback. Alternatively, an external test signal
can be injected, as described in Section 3.12.4. Additionally, a DS-1 loopback may be performed
using an external DS-1 test source such as a T1 BER test set. Any T1 test pattern may be used to
make measurements at one end of the link, provided the test sequence contains adequate 1’s
density, which is no more than 15 consecutive zeros.
A 215-1 or QRSS test may be used. However a 223-1 test will
violate the 1’s density requirement.
1’s density requirements only apply when AMI line coding is
used. The Lynx DS-3 factory default setting is for B8ZS line
coding (see Section 3.12.2).
To loop around the far-end radio, press either the DS-3 or the DS-1 loopback push button (located
on the radio front panel) and hold for approximately 3 seconds, then release. The orange LED on
the loopback enable push button should now be blinking.
If the DS-1 or DS-3 loopback button LED is illuminated and not
blinking, this means the far-end radio has initiated loopback
(either manually or through the DIAGNOSTICS port).
When loopback is enabled using the internal test signal, the ERROR LED should not illuminate if
the path is operating error-free. If the ERROR LED illuminates, this means that at least one bit
error has occurred.
The DATA LOSS LED will illuminate if the external test signal mode has been selected (see
Section 3.12.4) and there is no external test signal present at any of the DS-1 ports (9 pin,
modular, or bantam connector). When using external test mode and an external test signal, the
ERROR LED function does not apply. In external test mode the ERROR LED will not illuminate,
even when errors are present.
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MARCH 2000
An external BER test set is required for statistical BER analysis. Disconnect all external DS-1
signals and connect the BER test set to the input and output DS-1 MONITOR bantam jacks.
Select external test mode (see Section 3.12.4) and initiate loopback using the ENABLE loopback
button. Now the BER test can be initiated. Section 4.10 describes BER testing in more detail.
Loopback may be turned off at either end of the link by simply
pressing the ENABLE button at either end.
If two BER test sets are used to measure the link performance
(one at each end) separately in each direction, frame slips will
occur unless the BER test sets are synchronized with one test
set as the master and the other as the slave.
For multiple capacity radio models, only one loopback channel
may be used at any one time. Loopback cannot be performed
on more than one channel.
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LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
3.13.3 Error LED Mode Selection
The ERROR LED illuminates if any errors are present in the data stream during loopback. This
LED is only functional when using the internal test signal.
The default mode for this LED is “latched”. That is, when a single error occurs, the LED
illuminates and stays lit until loopback is turned off. This mode is especially useful for long term
(overnight) testing, or any time that an operator is not watching the radio during loopback testing.
There is an optional mode for this LED which is “unlatched”. This allows the user to “view” the
error rate. In this mode, the LED will flash on each time a single or multiple error occurs. The LED
turns off if no further errors occur. This mode can be useful if a BER test set is not available and
the user wishes to determine the nature of any error conditions (bursting, dribbling, occasional).
In “unlatched” mode, when any errors occur, the ERROR LED will illuminate for a minimum of one
second. If errors continue within this one second interval, the LED will remain on until there are no
errors for 1 second.
The two modes for this LED are selected by a rear panel DIP switch, as shown in Figure 3-20.
SW3 (Rear panel of LYNX DS-3)
ERROR LED
SW3-2
ERROR LED Unlatched
ERROR LED Latched
Figure 3-16: Error LED Mode Selection
In the LED unlatch mode, after 100 errors the ERROR LED
will remain lit to indicate excessive errors.
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LYNX DS-3 (45 Mbps)
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MARCH 2000
3.14 Additional Connections
There are additional customer connections which are optional and are not required to make the
Lynx DS-3 operational but may prove useful.
3.14.1 Orderwire Connection and Address Selection
Orderwire is a “telephone” type wayside service which allows users of the Lynx DS-3 radio to
establish voice communications from one radio to another, either directly to the companion farend, or through a repeater configuration, or several repeater configurations.
Telephone connection specifications:
REN (Ringer Equivalency Number)
1.0 B
Ringing Voltage
48 VDC, typical
(Ringing voltage is adequate for modern solid state ringers,
NOT for the older mechanical type ringers)
This Orderwire service does not affect the normal radio transmission of T1 traffic. Refer to Section
2.3.5 for the telephone specifications. For simple near-end to far-end communications, follow the
steps below:
1. Using a small screwdriver, set the address of both terminals by rotating the address rotary
selection switches on the rear panel of the Lynx DS-3. The address is a two digit number
(from 01 to 99). Each Lynx DS-3 terminal in the network should have a unique address. This
address acts like a “phone number” for other users to call a particular terminal. Each Lynx
DS-3 terminal should have a unique address.
Radio pairs (links) are shipped from the factory with addresses set to
01 or 02. Therefore, if only one pair is being used, address selection
may not be necessary. Also, in a connected spur network, it may be
desirable to maintain orderwire telephone addresses between 01 and
08 because the address doubles as the NMS/TBOS net address
which is limited to the addresses 01 through 08 (see Section 3.14.3.3
for more information).
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Figure 3-17: RJ-11 Orderwire Telephone Connection
2. Using a standard RJ-11 telephone cable, connect a standard electronic telephone (a touch
tone phone, complete with dialer; a handset by itself will not work) to the Orderwire connector
on the Lynx DS-3 front panel. This connector is wired identically to a standard two-wire
telephone jack, see Figure 3-21 for details.
3. With a telephone connected to each Lynx DS-3 terminal on opposite ends of the link, either
telephone can be used to “dial-up” the far-end location. Simply pick up the handset of the
near-end telephone and dial the two-digit address of the far-end Lynx DS-3 terminal. The farend terminal’s internal ringer and the connected telephone will ring, and if answered, two-way
full-duplex voice communication is established.
If using the Orderwire or Network management functions, all
Lynx DS-3 radios connected must have unique address settings
(telephone numbers).
The orderwire address is set by two rotary switches on the rear
panel of the Lynx DS-3. Use as small screwdriver to select the
orderwire address (01 through 99).
4. If the Lynx DS-3 radios are connected in a repeater configuration, Orderwire services can be
established to all Lynx DS-3 terminals in the network by implementing a connection of their
rear-panel connectors between repeater terminals. At the repeater site, a cable can be
connected to the two Lynx DS-3 terminals between their rear panel VF 25-pin connectors as
shown in Figure 3-22. With this cable in place, the Orderwire function will operate at terminals
at each end of the repeater and at the repeater site. This function can be continued through
several repeater sites if desired. For hub connections of 3 or more Lynx DS-3 radios at the
same site, an external 4-wire bridge is required to connect all radios to the orderwire.
The orderwire system can be integrated with orderwire
equipment supported by many other vendors. If your existing
orderwire network uses 2 digit addressing, and 0 dBm VF
interface, it can be connected to a Lynx DS-3 as shown in
Figure 3-22.
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Dialing a ✶ (star key) on the orderwire telephone implements an
“all call” feature which rings all connected radios. Also, if a
phone anywhere in the connected network has accidentally
been left off-hook, the # (pound key) key can be used to mute
all off-hook handsets until they are placed on and off hook
again.
The orderwire operates like a “party line”. All telephones provide
communication to all other telephones in the connected
network. Even if a particular telephone does not ring, it can still
be used to talk and listen to any ongoing orderwire activity if the
orderwire is in use at other terminal locations.
Figure 3-18: VF Port and VF Connections
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3.14.2 Alarm Connections
External alarm outputs are provided at the 25-pin, D-type subminiature ALARM connector. There
are two Form C summary alarm relays capable of switching 30 VDC at 1 A. Also, individual alarm
logic outputs capable of sourcing and sinking 1mA are provided. These individual alarms interface
to a single standard TTL load. When the unit is IN ALARM = “0”, the TTL output is 0 V to ±0.5 V.
When the unit is NO ALARM = “1”, the TTL output is +3.5 V to +5.5 V. See Table 3-E and Figure
3-23 for Alarm Connections.
The “summary” alarm (Form C relay) is activated by any near-end front panel LED alarm
condition, including if the loopback mode is enabled.
The “out-of-service summary” alarm (Form C relay) is activated by any of the following alarm
conditions:
❖
RX SYNC
❖
Radio Fail
❖
Loopback Enabled
Figure 3-19: Pin Connections, ALARM Interface
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PIN 2
DS-3 DATA LOSS - in alarm if no incoming
DS-3 data is received into the transmitter.
This alarm may be disabled by DIP switch
selection (see Section 3.12.6).
PIN 16
NC, SUMMARY ALARM, FORM C - normally
closed connection on summary alarm relay.
PIN 4
DS-1 DATA LOSS – in alarm if no incoming
DS-1 data is received into the transmitter.
Data Loss is activated when the input signal
drops below 0.97 volts for 175 bit intervals
and is deactivated as soon as the input signal
level rises above 0.97 volts. Radio transmits
AIS to the far-end if in alarm. This alarm may
be disabled by DIP switch selection (see
Section 3.12.6).
PIN 17
NO, OUT OF SERVICE SUMMARY ALARM,
FORM C - normally open connection on outof-service summary alarm relay. Closed when
in alarm.
PIN 6
BER - in alarm when the received signal is
degraded to an error rate above radio
threshold (approximately 1 x 10-6)
PIN 18
C, OUT OF SERVICE SUMMARY ALARM,
FORM C - common connection for the out-ofservice summary alarm relay.
PIN 8
AIS OUT - in alarm when the BER exceeds 1
x 10-3 for the received signal, or when there is
an RX SYNC alarm condition. Near-end radio
DS-1 line output has AIS when in alarm. This
alarm may be disabled as described in
Section 3.12.7.
PIN 19
NC, OUT OF SERVICE SUMMARY ALARM,
FORM C - normally closed connection on outof-service summary alarm relay. Open when
in alarm.
PIN 10
FAN - in alarm when one or both of the
internal fans are not operative.
PIN 21
NOT USED
PIN 12
FAR-END - in alarm when the far-end radio
has an alarm condition.
PIN 22
NOT USED
PIN 14
NO, SUMMARY ALARM, FORM C - normally
open connection on summary alarm relay.
Closed when in alarm.
PIN 24
TX PWR MON - voltage equal to the TX PWR
front panel voltage.
PIN 15
C, SUMMARY ALARM, FORM C - common
connection on the summary alarm relay.
PIN 25
RSL MON - voltage equal to the RSL front
panel voltage.
PINS 1, 3, 5, 7, 9, 11, 20, & 23
GROUND, CHASSIS CONNECTION
Table 3-C: Alarm Interface Connections
All alarms are active for a minimum of one second, or as long
as the alarm condition persists, which ever is longer.
TTL signals are “in alarm” when there is a TTL zero condition
(0 V to ± 0.5 V).
3.14.3 Diagnostics Port Operation
The Diagnostics Port is used to retrieve diagnostic or network management information about the
Lynx DS-3 radios by means of a computer connection. This can be accomplished locally or
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remotely. Remote diagnostic port connections require either a modem (not included) connection
be made to the serial port, when a local dial-up phone line is available at a radio site, or by means
of direct connection through the AUX DATA port (Service Channel). The use of the AUX DATA
channel can provide a “network management” port where serial interface data is available from all
Lynx DS-3 radios in a network, provided that they are configured properly for this type of
operation. (This section and Section 3.14.4 describe this further).
The diagnostics port allows connection of either EIA standard RS-232 or RS-422 devices to poll
and receive status of the Lynx DS-3 radio. This serial port provides similar information to that
which is normally available to a local operator by means of visual alarms and status (front panel
LEDs, ADDRESS, DIP switch settings etc.), including voltage level measurements (such as RSL,
PWR) and alarm port (see Section 3.14.2) status. The diagnostics port can also provide extended
information including some advanced diagnostics and configuration information. Any information
that is available on the far-end terminal is also available at the near-end Diagnostics port (such as
far-end RSL, far-end alarms) by means of bridging the AUX DATA port (as described in Section
3.14.4). A DIP switch is used to define the command protocol for this port as shown in Figure 324. The default setting is for TBOS commands (as described later in this section). The other
setting is for factory use only.
Figure 3-20: Diagnostic Port Protocol Selection
PAGE 3-48
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LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
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3.14.3.1 Diagnostics Port using RS-232
For RS-232 diagnostics connection to the Lynx DS-3 radio, connect the serial device (modem,
computer, terminal) to the male 9-pin subminiature connector in accordance with Figure 3-25.
Figure 3-21: RS-232 Diagnostic Port Connections
Pins 6 through 9 must not be connected for RS-232
communications to operate properly.
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3.14.3.2 Diagnostics Port using RS-422
For RS-422 Diagnostics connection to the Lynx DS-3 radio, connect to the serial device (modem,
computer, terminal) to the male 9-pin subminiature connector in accordance with Figure 3-26.
Figure 3-22: RS-422 Diagnostic Port Connections
Do not connect devices to both the RS-232 and RS-422
connections of the Diagnostics Port. This will cause data
conflicts that will result in errors over the interface.
PAGE 3-50
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LYNX DS-3 (45 Mbps)
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3.14.3.3 TBOS Protocol and Map
The diagnostics port is configured for an open industry standard protocol, called Telemetry Byte
Oriented Serial (TBOS). TBOS is a poll and response protocol that operates on a RS-422 4-wire
interface, one pair for transmit data (requests) to the radio, and one pair for receive data
(responses) from the radio. TBOS is asynchronous, serial, half duplex transmissions of ASCII
words which consist of one start bit, 8 data bits, odd parity and two stop bits at 1200 baud. The
connected terminal (remote or local) can poll the radio and determine status of the connected
Lynx DS-3 radio. The Lynx DS-3 is also able to communicate TBOS commands over the RS-232
connections, instead of the RS-422 connections if desired.
TBOS operates with a bit-map structure where each bit that the connected Lynx DS-3 radio sends
to the TBOS terminal has a specific meaning with regard to status, alarms or controls. All TBOS
network elements require a map for the network management software to interpret their
responses to queries from the terminal. Table 3-F provides the TBOS map for the T1 Lynx DS-3
radios.
The near-end RSL and Tx power test point voltages are encoded as 8 bit words that can be
converted into reference voltages (the same as at the front panel of the radio.
The address of the radio (see Section 3.14.1) serves as the “display” page number for the TBOS
data. Since TBOS is limited to eight (8) displays of data, it is required that addresses of 01
through 08 be used for Lynx DS-3 radios in TBOS networks. Any radio with addresses other than
01 through 08 will not report to the TBOS bit-map. In order to view status displays of far-end
radios, or other radios in the connected network, the AUX DATA port must be in Bridge (default)
mode as described in Section 3.14.4.
Alarm points within the TBOS map behave like the radio front
and rear panel alarms. If DIP switches have been set to disable
alarms, the alarms are disabled within the TBOS map.
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Byte
Poin
Bit
Type
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
N/A
N/A
N/A
N/A
S/C
S/C
N/A
N/A
S/C
N/A
N/A
N/A
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
N/A
Scan Point Definition
Control Point Definition
Notes
Model ID MSB
Model ID LSB+2
Model ID LSB+1
Model ID LSB
Future Use
Channel Plan ID MSB
Channel Plan ID LSB
Channel Plan Tx High/Low
Radio Fail Alarm
AIS Out Alarm
Fan Alarm
Rx Sync Alarm
Loopback Error Alarm
BER Alarm
Far-End Alarm
Telemetry Down Alarm
Data Loss DS3 Alarm
Data Loss DS1 Alarm
Link ID Mismatch Alarm
Near End SW2 pos not matched with Far End SW2
Data Loss DS3 Alarm Disabled
Data Loss DS1 Alarm Disabled
SW1 pos 5
SW1 pos 4
Loopack Test Source
Loopback Error LED Mode
Loopback
DS3
Channel
Loopback
DS1
Channel
SW3 pos 1, 1=external (valid for DS3 only)
SW3 pos 2 , 1=latched (valid for DS3 only)
Front panel switch
Front panel switch
0000=DS3 Single Band 5.8GHz
0001=DS3 Dual Band 5.8GHz / 5.3GHz
SW3 pos 6
00=A, 01=B, 10=C
SW3 pos 7
1=transmit high, 0=transmit low
Loopback
Loopback
DS3
DS1
Channel
Channel
AIS Disabled
Bridge Disabled
DS1 Line Code
SW1 pos 6
SW1 pos 8
SW1 pos 3
Far-End Address Invalid
Far-End Address MSB
Far-End Address LSB+1
Far-End Address LSB
1=Address>08
000=01, 001=02, 010=03,
011=04, 100=05, 101=06,
110=07, 111=08
Near-End RSL MSB
Near-End RSL MSB-1
Near-End RSL MSB-2
Near-End RSL MSB-3
Near-End RSL MSB-4
Near-End RSL MSB-5
Near-End RSL MSB-6
Near-End RSL MSB-7
Near-End Tx Power MSB
Near-End Tx Power MSB-1
Near-End Tx Power MSB-2
Near-End Tx Power MSB-3
Near-End Tx Power MSB-4
Near-End Tx Power MSB-5
Near-End Tx Power MSB-6
Near-End Tx Power MSB-7
Both Fans Bad
Tx Synth Unlock
Rx Synth Unlock
Input Line Driver
TBOS Map MSB
TBOS Map LSB+1
TBOS Map LSB
8-bit word derives voltage or dBm
8-bit word derives voltage or dBm
Only applies if Point 11=1
Only applies if Point 9=1
Only applies if Point 9=1
Only applies if Point 9=1 (sums all input alarms)
000=Primary Map
100=High capacity (this one)
Table 3-D: TBOS Map for the Lynx DS-3
PAGE 3-52
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3.14.4 AUX DATA (Digital Service Channel) Connection
The AUX DATA port is a separate wayside serial port which can be configured to allow the
connection of any user serial data (to 9600 baud) through the radio network. In the default
configuration, this service channel is “bridged” to the diagnostics port, providing TBOS network
management for far-end radios including radio network management through repeaters and hubs.
Connection to the AUX DATA port is an RS-232 or RS-422 serial interface, identical to the
diagnostics port (see Section 3.14.3). This port does not affect the T1 traffic on the Lynx DS-3
radio.
For TBOS network management, or when the AUX DATA port is used as a clear service channel,
co-located radios can be wired to one another to provide the information throughout the network.
At a repeater or hub location, bridging is accomplished by cable connections between co-located
Lynx DS-3 radios, via their AUX DATA ports, as shown in Figure 3-27 and 3-28. Figure 3-29
illustrates the pin-to-pin connections for this configuration. There is a related DIP switch position,
as shown in Figure 3-30, that makes the AUX DATA port usable for customer data instead of the
TBOS network management information. The factory default setting for this DIP switch is for
TBOS network management.
For non-TBOS external site management systems can be used with the Lynx DS-3 radios; Figure
3-26 shows a typical application. Here the reporting relies on external devices to communicate
over the clear service channel of the Lynx DS-3 radio. Each radio is given a site location (see
Section 3.14.1) and information on the radio status and control is fed through the diagnostic port
to a remote terminal unit (RTU). These RTUs have the capability of providing for other external
inputs at the remote site, for complete network management. Communication from each RTU is
fed via the RS-232 port to the AUX DATA connector on the radio, in this configuration no bridging
is required.
RTUs that do not support TBOS can alternatively connect to
the Lynx DS-3 alarm connector for discreet TTL alarms and/or
test point voltages.
If you are using TBOS network management and want full
information on the far-end radio (even in a single-hop
application), the bridge function must be enabled.
The service channel can only be used for TBOS network
management or for Aux data, not both. When selected for
TBOS, no other data should be connected to the AUX DATA
port.
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Figure 3-23: Repeater and Hub TBOS Radio Network Management
Figure 3-24: Repeater Application with Site Network Management
PAGE 3-54
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LYNX DS-3 (45 Mbps)
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Figure 3-25: AUX DATA Cable Connection for Repeater/Hub
SW1-8
(See Appendix B)
Figure 3-26: AUX Data Selection
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INSTALLATION AND MAINTENANCE MANUAL
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3.14.5 Monitored Hot Stand-by Protection
The monitored hot stand-by configuration (MHS) can be
implemented using the DS-3 Protection Switch. Contact
factory for specifications and application information
Typical MHS configuration is shown in Figure 3-31.
Figure 3-27: MHS Configuration
PAGE 3-56
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Your Notes on the Lynx DS-3 Radio
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4. Troubleshooting
4.1
Regular Maintenance
The Lynx DS-3 radios do not require any regular maintenance, however it is prudent to monitor
the radio link at regular intervals to assure that the link conditions are not changing. When visiting
a radio site for maintenance, the following items may be checked and their results recorded:
❖
RSL Voltage
❖
PWR Voltage
❖
Far-end RSL Voltage
❖
Alarm conditions
❖
Verify radio has adequate ventilation
If any alarm conditions exist, they should be recorded, and troubleshooting procedures from this
Section of the manual should be followed.
SECTION 4: TROUBLESHOOTING
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LYNX DS-3 (45 Mbps)
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4.2
Changing Frequency Plans
The Lynx DS-3 RF frequency selections are listed in Section 3.5. The near-end radio and the farend radio must be corresponding (e.g. A1 / A2). The frequency of a given Lynx DS-3 terminal is
set by the specific filter, the physical orientation of this assembly, and the setting of corresponding
DIP Switches. (See Section 3.12.1 for more details.)
With respect to a given filter, the frequencies are fixed, because tuned RF filters are required for
normal operation. Changing of the (pre-tuned) radio frequencies may be required when installing
spares or for special situations, such as interference mitigation. This is accomplished by installing
an alternate filter or re-orienting the existing filter (diplexer).
For any given model of Lynx DS-3, the frequency channel can be changed by swapping and /or
re-orienting the filter.
It is not necessary to remove the cover assembly of the Lynx
DS-3
1. Remove the two screws which mount the filter to the Lynx DS-3 chassis.
2. Slowly remove the filter from the chassis being careful to not endanger the cables that are
connected to the rear side of the filter.
3. Disconnect the two SMA connectors that are attached to the rear of the filter.
4. Select the new filter or orient the existing filter such that the frequency channel label on the
filter (showing the DIP switch positions) is right-side-up corresponding to the desired
frequency channel.
5. Connect the two SMA connectors to the new or reoriented filter.
6. Slowly place the wired filter assembly so that it is flush with the rear panel.
7. Install the two screws which mount the filter to the rear panel.
8. Refer to the rear panel filter label or Section 3.12.1 for DIP Switch settings to correspond to
the new filter.
On the single-band Lynx DS-3, the filter assemblies of A1 and
A2 terminal are NOT identical. And there is a circulator in each
diplexer, so they can not be interchanged. However in the case
of dual-band Lynx DS-3, the A1 can be converted to a B1 or
vice versa, by changing the diplexer and setting the DIP
switches. The same applies to A2 and B2. DIP switch selections
need to match the filter orientation, per the appropriate filter
label.
PAGE 4-2
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LYNX DS-3 (45 Mbps)
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4.3
Using a Spare Terminal
For single-band Lynx DS-3 radios, i.e. model 27710-91XX and model 27750-91XX, a similar
(single band) model must be used. The diplexer on the single band model is unique and contains
a circulator at the antenna port, therefore the diplexer can not be rotated to accommodate for both
A1 and A2 options. That is, for the single-band, a single-band terminal plus one of each type of
diplexer is required to accommodate for both A1 and A2 option radios.
For dual band (model 27700-91XX) Lynx DS-3 radios, one spare terminal can be used for either
A1/B1 and a different spare terminal can be used for A2/B2. Spares for dual band Lynx DS-3
(5.3/5.8 GHz model) are band dependent, and one must be A1/B1 and the other must be an
A2/B2. This will require stocking for two terminals as usable spares. A terminal can be rechannelized from an A1 to a B1 only, or an A2 to a B2 only, but A1/B1 cannot be re-channelized to
an A2/B2, as each split band transceiver cannot invert frequency bands. A minimum of one
diplexer type may be kept as a spare, because it is bi-directional and can be inverted 180 degrees
to change from A1 usage to A2, or B1 usage to B2 or vice versa. See Section 4.2 for changing
frequencies of a spare radio.
Customers with several radios, or radios in critical operations are encouraged to purchase one or
more spare radios of each model in their system. This will allow rapid restoration of radio service
in the unlikely event of a radio failure.
Single Band Spare
Required Hardware
27710-91A2X Terminal
A1 Diplexer
SECTION 4: TROUBLESHOOTING
Dual Band Spare (A1/B1)
Required Hardware
Dual Band Spare (A2/B2)
Required Hardware
27700-91A1X Terminal
27700-91A2X Terminal
Same diplexer covers B1
option as well
Same diplexer covers B2
option as well
PAGE 4-3
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
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4.4
Technical Support
Western Multiplex provides 24-hour telephone technical support for installed Lynx DS-3 radios.
Customers are encouraged to troubleshoot the radio and link in accordance with the latter part of
this section in this manual before contacting Western Multiplex. Western Multiplex also has a
limited supply of Lynx DS-3 radios that can be loaned to out-of-service customers for installation
while units are being repaired. Loaner supply is limited, and is only used for critical applications on
a first-come, first-served basis.
Customer service #: +1 (408) 542-5390.
PAGE 4-4
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LYNX DS-3 (45 Mbps)
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4.5
Repair Policy
The Lynx DS-3 terminal includes comprehensive alarm indicators designed to diagnose potential
faults. Should a fault occur, it often may be resolved by operator adjustment.
Should a fault occur that cannot be resolved by operator adjustment and has been confirmed by
looping terminals together on the bench (See Section 4.9), then the equipment should be returned
to the factory for repair.
The Lynx DS-3 is a complex system not designed for user repair. Do not remove the cover or
open any part of the Lynx DS-3 terminal. The complete Lynx DS-3 terminal should be sent back in
its original packing material for factory repair.
Please contact the factory in advance of returning the product. You will be assigned a Return
Material Authorization (RMA) number that authorizes your return. Units sent to the factory without
an RMA number may be delayed in the processing of the repair. Be sure to include the following
information:
❖
RMA number
❖
description of the problem
❖
your name and telephone number
❖
return shipping address
❖
urgency of repair
Please refer to the published Warranty policy W96-10 for
complete repair policy details. This document is included in the
front of this manual.
Lynx radios should be packaged in their original packing boxes
for shipment whenever possible. Western Multiplex can provide
an empty box shipment to facilitate proper packaging.
Regardless, proper and adequate packaging must be used for
shipments to protect the radio(s) from damage. Western
Multiplex can not be held responsible for any repairs due to
inadequately packed materials. Damage caused by improper
packing will likely result in higher repair costs and delays (refer
to the Warranty section at the beginning of this manual).
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LYNX DS-3 (45 Mbps)
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4.6
Front Panel Status LEDs
There are several front panel status LEDs on the Lynx DS-3. These LEDs indicate conditions
where either a hardware failure has occurred or the radio link is not optimum. In many cases, a
combination of LEDs may be illuminated. The following sections describe the necessary
troubleshooting procedures should any LED(s) indicate a problem during or after installation.
PAGE 4-6
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4.6.1
DATA LOSS Alarms
Function:
These DATA LOSS Alarms indicate that no DS-3 and/or DS-1 is present at the rear panel data
interface. The DS3 DATA LOSS alarm relates to the DS3 input (BNC) port, while the DS1 input
alarm relates to the DS1 input (RJ-48C or DB-9) ports. The data loss alarms do not indicate a
radio hardware failure.
The capacity of the radio will determine how many DATA LOSS
LEDs there are on the front panel.
Sometimes the wayside DS-1 is not used at all, or will be used
in the future. In this case, the DS1 alarm will be active because
no DS-1 signal will be present. This alarm can be defeated by
selecting SW1-4, a rear panel DIP switch, in the upside
position, as described in Section 3.12.6.
When there is a data loss condition, even if the data loss alarm
has been disabled, the Lynx DS-3 injects AIS into the (RF)
transmitted DS-1 signal.
Possible Causes:
❖
No DS-3 and/or DS-1 connection present at rear panel
❖
Improper pin connections of DS-3 and/or DS-1 connector(s)
❖
No data on DS-3 and/or DS-1 input connector(s)
Recommended Actions:
1.
Check to make sure that there is a DS-1 connection present on either of the three DS-1
connectors (9-pin D, 8-pin modular jack or Bantam) for the channel in alarm.
On a multiple-capacity radio, if the alarm is on a channel which is
unused at this time, the alarm condition can be disabled by a rear
panel DIP switch, as described in Section 3.12.6.
(continued)
SECTION 4: TROUBLESHOOTING
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2.
Verify that the DS-1 line has data active at the radio connection. This can be
accomplished using a BER tester or signal analyzer at the bantam jacks on the rear panel
of the radio. Also, signal activity can be verified by using an oscilloscope.
When monitoring the incoming DS-1 signal using the rear panel
bantam jack, the BERT must be bridge terminated. Do not
double-terminate the DS-1 interface.
3.
PAGE 4-8
Verify that pin connections have been made properly (in accordance to Section 3.11).
Make sure that you have connected the DS-1 with respect to DTE or DCE, depending on
the DS-1 transmitting device.
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4.6.2
BER (Bit Error Rate) Alarm
Function:
This LED indicates that the traffic being received from the far-end radio is exceeding the bit error
-6
rate threshold of the radio (approximately 1 x 10 ). This indicates that radio traffic currently has
errors on it which may exceed acceptable levels. This LED will stay ON as long as the BER
threshold is being exceeded. In some cases, it will turn ON and OFF, in which case there are
bursts of errors causing intermittent degradation to the received data. In all cases, the LED will be
on for at least 1 second for any group of errors which exceed the threshold, whether they are a
burst of errors or a long string of errors.
If the RX SYNC alarm is on the near-end or far-end radio in
addition to the BER alarm (on the same radio), the RX SYNC
alarm should be the first priority for troubleshooting.
Possible Causes:
❖
Path fading due to atmospheric conditions (usually accompanied by Far-End BER
alarm) and low RSL voltage reading
❖
Poor transmission line connections (usually accompanied by Far-End BER alarm) and
low RSL voltage reading
❖
Antenna problems, misalignment or path clearance (usually accompanied by Far-End
BER alarm) and low RSL voltage reading
❖
Interference
❖
Received signal level (RSL) is too strong
❖
Far-end radio transmitter circuitry is faulty or Tx Power adjusted incorrectly (too low)
❖
Near-end radio receiver circuitry is faulty
❖
Incorrect setting of the LINE CODE and/or LBO
Recommended Actions:
An internal loopback test should be performed to verify that errors are occurring over the link:
❖
Verify that the near-end radio is set for Internal test mode and Latched Error LED (both
default settings of rear panel DIP switch positions, as described in Sections 3.12.4 and
3.13.3).
❖
Press and hold (for approximately 3 seconds, then release) the Loopback Enable
switch on the front panel of one radio (this will take radios out of service). Let this test
run for a few minutes.
❖
If the ERROR LED illuminates, this is verification that errors are on the link and
troubleshooting should continue. Also verify for both radios that the Line Build Out DIP
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switches and DS-1 Line Code settings are in accordance with external DS equipment
(see Sections 3.12.2 and 3.12.3).
❖
Press the Loopback Enable switch to deactivate loopback mode.
Next measure RSL by placing a voltmeter across RSL and GND test points. Compare this voltage
to the Factory Test Data Sheet and estimate the RSL in dBm. Compare this to the RSL that was
expected using path calculations (see Section 3.3.3). Press and hold the DISPLAY FAR END
button and measure the far-end RSL (while continuing to hold the button). Compare this RSL to
the Factory Test Data Sheet for the far-end radio and estimate the RSL in dBm. Again, compare
this RSL to the expected RSL from the link budget calculations.
If RSL from both ends of the radio are approximately the same as each other, but lower than
anticipated for this installation, then the likely cause of the BER alarm(s) is excessive losses
between the radios. Excessive loss problems could include the transmission line at either end, all
adapters, connectors, the antennas, the antenna alignment as well as the path itself (any
obstructions or clearance problems). Antenna alignment, line-of-sight and path clearance should
be verified; if this does not improve RSL, all devices between the radios and their antennas at
both ends should be checked. Make sure all transmission line, connectors and any other devices
are properly rated for operation at the radio's frequency.
If only one end has low RSL, this could be caused by low transmit output power from the opposite
end radio. Verify that the transmitter output power of the radio opposite to the low RSL receiver
has been set in accordance to path calculations, or EIRP restrictions (where applicable). Power
adjustment must be performed by professional installation personnel only. The PWR test point
can be used and compared with the Factory Test Data Sheet, the front panel recessed
potentiometer can be turned clockwise to increase power. If an RF power meter is available, this
can be connected to the RF output of the radio for precision measurement. This test will also
verify that the radio transmitter is working properly.
If one terminal (or both) has high RSL, this could be caused by a very short path or interference.
To verify the possible presence of interference, remove DC power to the radio which is opposite to
the one that is reading high RSL. Once power is removed, measure RSL on the remaining radio.
If RSL voltage is higher than that which is listed for "Threshold" in the Factory Test Data Sheet,
then an interfering signal is present. If interference is suspected, the easiest potential remedy is to
swap frequency channels on both sides of the link. See Section 4.2 for details. Swap frequencies
on both terminals so that they are the opposite from their original settings (e.g. change A1 into A2
and A2 into A1). Make sure that you change the DIP switch settings to correspond to the channel
change. After both ends are changed, reconnect the radios and determine if the BER alarm is still
active. If the BER alarm is still active, other frequency channels can be installed, or other
interference countermeasures can be tried, in accordance with Section 4.8.
If the BER alarm continues, an external BER test should be performed to verify the extent of bit
errors on the link. See Sections 4.9 and 4.10 for details on bit error rate testing. A BERT can be
connected on one side of the link, the External test mode selected on the near-end radio,
loopback enabled and bit errors evaluated. If the BER is above acceptable levels, continue to
troubleshoot the link.
If all path related and data input problems have been pursued and the BER alarm is still active,
the problem could be related to a radio failure. While radio failure is typically indicated by more
severe alarm conditions, it is possible that one of the radios may be out of specification, and this
could be the cause of the BER alarm. A back-to-back test will verify proper radio operation. See
Section 4.9 for details. A threshold test on both radios along with a test to verify proper RF output
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power would be beneficial.
Perform a back-to-back test before returning any radio terminal to
the factory for repair. A back-to-back test verifies radio operation.
(See Section 4.9).
If the radios successfully pass their back-to-back testing, the problem is likely with the path or the
connections between the radio and the antenna or interference. Before reinstalling the radios, be
sure to set the output power to the appropriate level for the installation and set rear panel DIP
switches to the desired settings for the installation.
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4.6.3
RX SYNC (Receiver Synchronization) Alarm
Function:
This LED indicates that the demodulator function is not synchronizing with the intended received
signal.
When the RX SYNC alarm is active, the Lynx DS-3 radio injects AIS onto the received DS-3 and
DS-1 (line transmit out), even if AIS has been disabled by rear panel DIP switch setting.
Possible Causes:
❖
Severe path fading due to atmospheric conditions (usually accompanied by Far-End RX
SYNC or BER alarm) and low RSL voltage reading
❖
Poor transmission line connections (usually accompanied by Far-End RX SYNC or BER
alarm) and low RSL voltage reading
❖
Antenna problems, misalignment, or path clearance (usually accompanied by Far-End
RX SYNC or BER alarm) and low RSL voltage reading
❖
Improper radio settings (frequency channel, security code)
❖
Interference
❖
Far-End radio transmitter circuitry is faulty
❖
Near-End radio receiver circuitry is faulty
Recommended Actions:
Check the following at each end of the link:
❖
Verify that rear panel filters are opposite channel plans on each end (e.g. one is A1 and
other is A2).
❖
Verify that rear panel DIP switch settings match each installed filter (see Section
3.12.1).
❖
Verify that each radio is set to the same security code (see Section 3.12.5).
❖
Verify that all connections between radios and antennas are secure and all devices
between radios and antennas are rated for the radio frequency band.
If RX SYNC alarm continues, follow recommended actions for a BER alarm as described in
Section 4.6.2.
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4.6.4
AIS OUT (Alarm Indication Signal)
Function:
This LED informs the user that the near-end receiver is operating at BER ≥ 1 x 10 or is not
receiving data and is therefore injecting AIS to the line transmit out of the DS-3 and DS-1
connectors.
-3
If the AIS has been disabled by rear panel DIP switch, AIS will not be injected onto the line
transmit output unless there is a loss of sync (RX SYNC alarm).
Possible Causes:
❖
Local receiver has lost lock (RX SYNC)
❖
Local receiver is operating at BER >1 x 10
-3
Recommended Actions:
1.
Follow recommended actions for a RX SYNC alarm, as described in Section 4.6.3.
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4.6.5
FAN Alarm
Function:
This alarm activates only when one or both of the internal fans are faulty.
Possible Cause:
❖
Faulty fan inside the radio.
Recommended Actions:
1. Check environmental conditions of the radio. Assure that the ambient temperature at the radio
location is within specification of the radio. If not, apply environmental conditioning to radio
location or place radio at alternate location where the environmental specifications are met.
2. Visually inspect radio mounting area and ensure that right and left sides of the radio chassis
are unobstructed for airflow.
3. Verify that at least one of the internal fans are operational by temporarily covering some of the
ventilation holes on the right side of the radio (as you face the front panel) with a thin piece of
paper. Slowly pull the paper outwards away from the ventilation holes to determine if the fan is
pulling the paper toward the chassis. This can also be checked on the opposite side of the
chassis to verify that the fans are pushing air out of the chassis.
4. If at least one fan is working you may wish to postpone repair, as long as the unit is operating
without any other errors (the radio is designed to operate with only one fan)
5. If neither fan is working or if typical operating environment is greater than 30°C, it is
recommended that the unit be repaired at the soonest opportunity. Return the radio to the
factory for repair. See Section 4.5 for details.
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4.6.6
RADIO FAIL Alarm
Function:
The RADIO FAIL alarm indicates a known problem with the radio hardware.
Possible Causes:
❖
Internal synthesizers are unlocked
❖
Internal digital circuits have failed
❖
DS-1 connection is incorrect
Recommended Actions:
1. Disconnect the DS-1 connections from the rear panel.
2. If RADIO FAIL alarm clears, check DS-1 connections for proper pin connections and
impedance as described in Section 3.11. Check rear panel LBO DIP switch settings as
described in Section 3.12.3.
3. If RADIO FAIL alarm does not clear, remove power from the unit.
4. Check to make sure power supply voltages are within specification.
5. Even if the voltages were within specification, reapply power to the unit.
6. If RADIO FAIL alarm clears, place the radio back into service.
7. If RADIO FAIL alarm does not clear, perform a back-to-back test to verify radio operation, as
described in Section 4.9.
8. If RADIO FAIL alarm is still active in a back-to-back test, return the radio to the factory for
repair (see Section 4.5).
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4.6.7
FAR END Alarm
Function:
This LED indicates that there is an alarm condition present on the far-end radio. When the
DISPLAY FAR END button is pressed (and held), the status LEDs indicate the alarm conditions of
the far-end radio.
Possible Cause:
❖
One or more alarm condition(s) exist on the far-end radio
Recommended Actions:
1. Press and hold the DISPLAY FAR END button and observe the LED status.
2. Follow instructions for troubleshooting the far-end radio in accordance to the appropriate
LEDs which are in alarm, as described in Section 4.6.1 through 4.6.6.
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4.7
Errors in the Data Stream
When the radio is in service, errors in the data stream may occur. This is usually known to the
operator by either faulty data indications of downstream equipment, external bit error rate testing,
or ERROR LED indications during internal loopback testing.
During internal test mode loopback testing, if an error is detected, the ERROR LED will illuminate.
In default mode, this lamp will stay lit during loopback testing if a single error is detected. If
Loopback has been performed over a period of time and the ERROR LED does not latch on, the
radio link is operating completely error-free.
The ERROR LED only operates in internal test signal loopback
mode. Use a BERT to detect errors when using an external test
signal. See Sections 3.12.4, 3.13.2 and 3.13.3 for more details.
It is possible that no alarms appear on the front panel during normal operations, but there are
errors present in the data stream. If the BER LED is lit, this indicates rather severe error
conditions and it is best to follow the procedures provided in Section 4.6.1. However, some errors
will not result in the BER alarm (such as bipolar violations, slow "dribbling" errors, improperly
terminated DS-3 or DS-1 connections or incorrect settings of LBO or Line Code DIP switches), but
will be exhibited on downstream data processing equipment or during a BER test. In other cases,
there may be data errors due to atmospheric conditions (fading), interference or other reasons,
but not at a high enough error level to be indicated with the BER alarm LED. In the case of these
types of errors, the following information can be helpful to troubleshoot the radio link.
Indications:
❖
In Loopback Mode, ERROR LED is illuminated
❖
During external BER test, test equipment indicates errors
❖
Downstream equipment (mux, channel bank, CODEC, router, etc.) indicates errors
Possible Causes:
❖
Path fading due to atmospheric conditions
❖
Poor transmission line connections
❖
Antenna problems, misalignment or path clearance
❖
Received signal level (RSL) is too strong
❖
Incorrect Line Code setting (DS-1 only)
❖
Incorrect Line Build Out (LBO) setting
❖
Far-End radio transmitter circuitry is faulty
❖
Near-End radio receiver circuitry is faulty
❖
Interference
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Recommended Actions:
1. Verify DIP switch settings corresponding to DS-1 Line Code (AMI or B8ZS) on both radios, as
described in Section 3.12.2. They must be the same setting for both ends of the radio for
each corresponding data channel (data channel 1 or data channel 2). Channel 1 and channel
2 can be different from one another if required by external interface equipment.
2. Verify DIP switch settings corresponding to Line Build Out (LBO) length on both radios, as
described in Section 3.12.3. These may be different for each connection but need to match
the length of the DS-1 cable connected to each data port.
3. Verify that external equipment is also set to the proper DS-1 Line Code (AMI or B8ZS),
matching that of the Lynx DS-3 radio setting.
4. Verify DS-3 and DS-1 wiring in accordance to Section 3.11.
5. Even if the BER alarm LED is unlit but errors continue, follow the instructions described in
Section 4.6.2
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4.8
Interference Countermeasures
The recommended interference countermeasures available to the Lynx DS-3 operator are as
follows:
1.
Short Paths
The single most effective countermeasure against interference is to maintain "short path" length.
This may be achieved by dividing long paths into multiple small paths by cascading hops.
Intermediate repeaters may be formed using back-to-back Lynx DS-3 terminals and transmit
output power reduced, if required.
By definition, "short path" is defined as a path where fades are extremely rare and signal levels
vary by no more than ±3 dB during fades. This distance will vary with the RF frequency. Typically
a "short path" is defined as any path length shorter than 5 miles at 5.8 GHz.
2.
Narrow Beam Antennas (high gain)
This is the next most effective countermeasure. Narrow beam antennas ensure that the
transmitted power is sent in a single direction and this minimizes the possibility of causing
interference inadvertently to other users. Narrow beam antennas also reject off-azimuth signals
being received from potential sources of interference and have high gain which boosts desired
receive levels and improves the carrier to interference ratio. When selecting narrow beam
antennas, it is helpful to know that larger antennas generally outperform smaller antennas.
Another important antenna specification is the front-to-back ratio which ensures rejection of
unwanted signals from azimuth angles behind the antenna.
3.
Frequency Selection
This is another very effective countermeasure. The Lynx DS-3 offers several distinct nonoverlapping frequency channel plans (see Sections 3.5 and 4.2) and the radio's RF filter is able to
reject interference more than 20 MHz away from the receive frequency. Offset frequencies
combined with other countermeasures may enable several receive channels to operate at a single
hub site. Interference can often be overcome by exchanging frequencies of both-ends of the radio
link (e.g. change your A1 terminal to an A2 and change the other end from an A2 to an A1). Also,
changing channel plans (e.g. from A to B) can be very effective. (See Section 4.2).
4.
Antenna Polarization
Cross-polarized antennas can provide approximately 20 to 30 dB discrimination of unwanted
signals. The actual discrimination will depend upon the antenna design and any rotation of
polarization along the path, for example, due to reflections. Discrimination only exists between two
orthogonal polarizations:
- vertical vs. horizontal or
- left-hand circular vs. right-hand circular
There is only 3 dB discrimination between circular and linear (vertical or horizontal) polarization.
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Interference can sometimes be overcome by changing antenna polarization at both ends of the
link.
5.
Transmit Power
The maximum level into the receiver is -5 dBm. Above this level, errors may occur in the receive
data stream. Transmit output power should be reduced on very short paths to avoid overload.
6.
Equipment/Antenna Location
Occasionally, interference is caused by the radio or the antenna being too close to another similar
transmitter. For example, other high powered transmitters may cause interference. Moving the
radio, the antennas, or the interfering equipment can reduce or eliminate interference.
Interference countermeasures rely to some extent on the
measurement of the received interference level and frequency.
Prior to turning up a new hop, a spectrum analyzer can be used
to monitor the spectrum at each end to check for possible
interfering signals. See Section 4.8.1 for more details.
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4.8.1
Use of a Spectrum Analyzer to Evaluate Potential Interference
Connecting to the antenna and using "peak hold" on a spectrum analyzer, the spectrum between
5.725 GHz and 5.825 GHz (for single-band radios) or 5.250 GHz and 5.825 GHz (for dual-band
radios) can be swept and any signals being received at levels above the radio's specified
threshold identified. If potential interfering signals are found, then the Lynx DS-3 frequency plan
can be changed to avoid a receive channel which may contain significant interference (see
Section 4.2).
For example, interference may be reduced by moving a from the A1/A2 plan to the B1/B2 plan
(dual-band option only) or by swapping terminals or RF filters so that A1 becomes A2.
Signals outside the range of 5.725 GHz and 5.825 GHz (for
single-band radios) or 5.250 GHz and 5.825 GHz (for dual-band
radios) may be ignored: they will not cause interference.
If a spectrum analyzer is not available, the RSL voltage can be used to indicate the background
noise and interference level within the receiver RF filter band when the far-end transmitter is
turned off. With the far-end radio turned off, if an RSL voltage level above the radio's threshold
level is measured, there is potentially interference in this frequency channel.
When using a spectrum analyzer for determining the presence
of interference, very narrow resolution bandwidth settings must
be used to detect signals down to the radio's threshold
(approximately –78 to -82dBm).
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4.9
Back-to-Back Testing
Back-to-back testing, as shown in Figure 4-1, is an ideal method of testing the Lynx DS-3 radios.
This testing eliminates link problems caused by auxiliary equipment, installation, or the radio path
and isolates potential radio hardware problems. Back-to-back testing must be performed with both
radios at the same location. The following test equipment is required:
❖
DC power source capable of supplying approximately 90 Watts (total) to the radios (or
two AC adapters)
❖
One low-loss coaxial cable, N-to-N male
❖
One (or more) coaxial in-line calibrated fixed attenuators, 40 to 80 dB total attenuation
The following test equipment may also be useful to perform further testing of the Lynx DS-3 radio:
❖
BER tester
❖
Variable (60 dB range or more) RF attenuator (rated for the proper frequency, 5.8 GHz)
❖
RF power meter
Back-to-back testing must be performed to verify a radio
problem before returning any radio to the factory for repair.
When the equipment is connected as shown in Figure 4-1, without connecting the BER tester,
both Lynx DS-3 radios should have no alarm conditions, except for DATA LOSS. When Loopback
is enabled at either end, no errors should be registered by the ERROR indication. If these
conditions have been met, then it is likely that the Lynx DS-3 is operating in accordance to
specifications. If errors or alarms occur during this test, verify that all DIP switch settings are
properly set. If alarms or errors are still present, the radio is likely to be faulty.
If further troubleshooting is required for the radios themselves, a variable RF attenuator can be
inserted between the radios to fade down the path to determine that the threshold specification is
being met. The BER and threshold tests can be run in both directions to isolate the radio problem
(if any). More information on BER testing is provided in Section 4.10. An RF power meter can be
used to individually test each radio's output power.
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Figure 4-1: Back-to-Back Test Configuration
(When using a BER tester, initiate loopback on connected Lynx DS-3 and select external test
mode as described in Section 3.12.4.)
The Lynx DS-3 radios will be damaged if appropriate attenuation
is not supplied between radios. You must provide a minimum of
40 dB and no more than 80 dB attenuation between the two
radios.
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4.10 BER (Bit Error Rate) Testing
Bit error rate (BER) testing is the preferred way to evaluate a radio link's performance. It can be
performed from end-to-end or in loopback mode (which tests both directions of the radio path).
Figure 4-1 illustrates a typical BER test configuration for loopback testing (which may include the
radio's path instead of in-line attenuators). Figure 4-2 illustrates a typical BER test configuration
for end-to-end testing.
When performing DS-3 BER testing, make sure of the following:
- Disconnect DS-3 inputs and outputs to both radios.
- Connect BER tester to data in/output connector(s)
- Select external test signal for loopback testing using the DIP switches as defined in
Section 3.12.
- Verify all DIP switch settings.
- The BER test pattern chosen must contain adequate 1’s density
15-1
or QRSS test pattern may be used. The
For the DS-3, a 2
Lynx DS-3 factory design for DS-3 line coding is B3ZS (see
Section 3.12.2).
If two BER test sets are used to measure the link performance
separately in each direction, frame slips will occur unless the
BER test sets are synchronized with one test set as the
master and the other as the slave.
BER testing may be performed on the bench, with two terminals back to back, or over the radio
path. Also, it may be performed from end-to-end (which requires two BER test sets over a link, the
far-end unit slaved to the near-end unit's clock) or in loopback mode, as described in Section 4.9.
If BER testing indicates an unacceptable level of errors, follow the instructions in Section 4.6.2. or
perform a back-to-back test as described in Section 4.9.
Figure 4-2: End-to-End BER Test Configuration
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Your Notes on the Lynx DS-3 Radio
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5. Appendices
Appendix A - Digital Line Interface Specifications
Information in Appendix A is referenced to the following document:
Bellcore TR-TSY-000499 Issue 3, December 1989
1.
Pulse Density Assurance and Maintenance
At all signal interfaces, digital bit streams must contain sufficient energy for self-extraction of
timing by various pieces of transmission equipment. The level of energy is controlled by ensuring
that sufficient pulses (or ones) are present in the bit stream. In general, as the bit rate increases,
the desired level of pulse density also increases, resulting in unique requirements applied to the
different levels in the digital hierarchy.
This section describes two approaches to ensure pulse density. The first, which is applied at a
number of digital hierarchy levels, involves a unique line code substitution when a low pulse
density threshold is detected. This is referred to a bipolar with N Zero Substitution (NZAS). The
second approach, defined only at the DS-1 level, involves recording of blocks of the digital bit
stream to ensure a continuous level of sufficient ones. Normal line coding is then applied to this
recorded signal. This technique is referred to as Zero Byte Time Slot Interchange (ZBTSI).
(a)
Bipolar with N Zero Substitution (BNZS) Coding
BNZS is used at the DS-1 through DS-3 levels for zero code suppression. The line code
is fundamentally bipolar. Binary ones in the source data stream are converted to
alternating positive and negative pulses in the line signal, whereas no pulses (spaces)
are transmitted for binary zeros. In bipolar coding, the polarity is changed at every
occurrence of a one. To provide a substituted word that can be easily and reliably
identified, BNZS coding uses intentional bipolar violations (BPVs) as its characteristic.
BNZS coding substitutes a known pattern of zeros and ones in BPV for a string of
zeros. In the signature pattern, B represents a normal bipolar pulse, V represents a
pulse violating the bipolar rule, and 0 represents a zero (no pulse).
(b)
Bipolar with 8 Zero Substitution (B8ZS)
B8ZS is the recommended long-term network solution to providing clear channel
capability in a DS-1 rate signal. In a DS-1 code, any sequence of eight consecutive
zeros (∅∅∅∅∅∅∅∅) is replaced with (∅∅∅VB∅VB). The polarity of the V (violation)
pulses in the fourth and seventh bit positions are the same as the preceding pulses in
the bit stream. Thus, if the preceding pulse were positive (+), the B8ZS substitution
would be (∅∅∅+–∅–+), while for a preceding negative pulse (–), the substitution would
be (∅∅∅–+∅+–). At the receiver, the decoder recognizes the (∅∅∅VB∅VB) code and
replaces it the original eight zeros. Table C-1 is an illustrative example of B8ZS.
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2.
DS-1
(a)
Nominal Rate
The DS-1 signal has a nominal line rate of 1.544 Mb/s.
(b)
Interface Specifications
Table A-2 lists the DS-1 interface specifications. All signals appearing at a DS-1 crossconnect shall satisfy each of the listed requirements.
(c)
Pulse Shape
Figure A-1 depicts the shape of an isolated pulse appearing at the DS-1 cross-connect. The
shape in Figure A-1 applies to the output pulses of all equipment as it is seen at the DS-1.
In this figure, the ordinate shows pulse amplitude normalized to unity at the pulse center.
The abscissa is a time scale measure in Unit Intervals (UIs) relative to the pulse center. For
DS-1, the UI is 648 ns (the reciprocal of the nominal bit rate).
(d)
Pulse Density
All terminals that generate a DS-1 signal shall meet the following constraints on the density
of ones in the signal as delivered to the DS-1 cross-connect:
❖
No more than 15 consecutive zeros
❖
In each and every time window of 8(N+1) digit time slots (where N can equal 1 through
23,) there must be at least N ones present.
CASE 1
PRECEDING PULSE
Input
∅∅∅∅∅∅∅∅
∅∅∅VB∅VB
B8ZS Substitution
Output
NEXT 8 BITS
∅∅∅+–∅–+
–
∅∅∅∅∅∅∅∅
CASE 2
Input
∅∅∅VB∅VB
B8ZS Substitution
Output
–
∅∅∅–+∅+–
Table A-1: Examples of B8ZS Coding
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Line Rate
1.544 Mb/s
Tolerance
Source timing for self timed DS-1 bit stream shall not exceed ±32
ppm with respect to the basic rate. DS-1 sinks should be capable of
accepting a rate deviation of ±130 ppm.
Line Code
Either of the following:
(1) Bipolar* satisfying the pulse density constraints of section A.1.
(2) B8ZS as described in Section A.1.
Termination
One balanced twisted pair shall be used for each direction of
transmission. See Figure A-2 for reference.
Impedance
A test load of 100 ohm with a tolerance of plus or minus 5% shall be
used for the evaluation of pulse shape and the electrical parameters
specified below. This load requirement applies only to DS-1
appearance of a source terminal, not a sink. See Figure A-2.
Pulse Shape
Refer to Figure A-1. The pulse amplitude shall be between 2.4V and
3.6V measured at the center of the pulse, and may be scaled by a
constant factor to fit the template.
Power Level (for an all
ones transmitted pattern)
(1) The power in a band no wider than 3 kHz centered at 772 kHz
shall be between 12.6 and 17.9 dBm.
(2) The power In a band no wider than 3 kHz centered at 1544 kHz
shall be at least 29 dB below that at 772 kHz.
Power Imbalance
There shall be less than 0.5 dB difference between the total power
of the positive pulses and the negative pulses.
* Bipolar is also known as Alternate Mark Inversion (AMI). Successive logical ones are coded as
pulses of alternately polarity. Zeros are coded zero. Two or more successive pulses of the same
polarity are termed bipolar violations.
Table A-2: DS-1 Interconnection Specification
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Figure A-1: DS-1 Pulse Template Corner Points (New Equipment)
MAXIMUM CURVE:
TIME
(UNIT INTERVALS)
NORMALIZED
AMPLITUDE
–.77
–.39
–.27
–.27
–.12
0.0
.27
.35
.93
1.16
.05
.05
.8
1.15
1.15
1.05
1.05
–.07
.05
.05
–.77
–.23
–.23
–.15
0.0
.15
.23
.23
.46
.66
.93
1.16
–.05
–.05
.5
.95
.95
.9
.5
–.45
–.45
–.2
–.05
–.05
MINIMUM CURVE:
TIME
(UNIT INTERVALS)
NORMALIZED
AMPLITUDE
Table A-3: DS-1 Isolated Pulse Templates and Corner Points
PAGE 5-4
SECTION 5: APPENDICES
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
Appendix B - Rear Panel DIP Switches
The Lynx DS-3 has three separate eight-segment rear panel DIP switches, labeled SW1, SW2
and SW3. Upon shipment from the factory, these switches are set for factory default
configuration, which is all switches down (in the “zero” position), except for SW3 position 8 for the
single band and SW3 positions 6 through 8 for the dual band option which are set to match the
installed rear panel RF filter assembly. So SW3-6 through SW3-8 determine the frequency
channel for transmit and receive. The tables in this section provide a quick reference for the DIP
switch functions and their settings.
DIP switch settings are noted by their position, either up (1), or down (0),
not by on/off as may be printed on the DIP switch assembly.
SECTION 5: APPENDICES
PAGE 5-5
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
Shaded switch positions are factory default
SW1
LBO (DS-1)
0-125 Ft
125-250 Ft
250-400 Ft
400-655 Ft
Line Code (DS-1)
B8ZS
AMI
Loss of Input DS-1 Alarm
Enable
Disable
Loss of Input DS-3 Alarm
Enable
Disable
Diagnostics Port
TBOS
Craft
Rx AIS Output
Enable
Disable
Aux Data Port
Bridged (TBOS)
Enabled (Clear)
SW2
Security Code
Code 1
Code 2
Security Code
Code 1
Code 2
Table B-1: Lynx DS-3 5.8 GHz Single Band Switch Settings
PAGE 5-6
SECTION 5: APPENDICES
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
Shaded switch positions are factory default
Loopback Test Source, DS-3
Internal
External
Error LED Latch, DS-3
Enable
Disable (Flash)
DS-3 Line Build Out
0-450 feet
450-900 feet
Frequenc
A1
A2
Xmtr
5750
5800
Rcvr
5800
5750
For Future Use
Table B-2: Lynx DS-3 5.8 GHz Single Band Switch Settings
SECTION 5: APPENDICES
PAGE 5-7
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
Shaded switch positions are factory default
SW1
LBO (DS-1)
0-125 Ft
125-250 Ft
250-400 Ft
400-655 Ft
Line Code (DS-1)
B8ZS
AMI
Loss of Input DS-1 Alarm
Enable
Disable
Loss of Input DS-3 Alarm
Enable
Disable
Diagnostics Port
TBOS
Craft
Rx AIS Output
Enable
Disable
Aux Data Port
Bridged (TBOS)
Enabled (Clear)
SW2
Security Code
Code 1
Code 2
Security Code
Code 1
Code 2
Table B-3: Lynx DS-3 5.3/5.8 GHz Dual Band Switch Settings
PAGE 5-8
SECTION 5: APPENDICES
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
Shaded switch positions are factory default
SW3
Loopback Test Source, DS-3
Internal
External
Error LED Latch (DS-3)
Enable
Disable (Flash)
DS-3 Line Build Out
0-450 feet
450-900 feet
Frequenc
A1
A2
B1
B2
Xmtr
5284
5759
5316
5791
Rcvr
5759
5284
5791
5316
For Future Use
Table B-4: Lynx DS-3 5.3/5.8 GHz Dual Band Switch Settings
SECTION 5: APPENDICES
PAGE 5-9
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
Appendix C - Rear Panel Data Connectors
The following figures illustrate the pin structure for all rear panel data connections. All figures are
oriented as a customer would view them, facing the rear panel. DC power connection information
is found in Section 3.7 of the manual.
Figure C-1: DS-1 9-Pin D-Style Connector
Figure C-2: DS-1 Modular Connector (RJ-48C)
Figure C-3: VF Port Connection
PAGE 5-10
SECTION 5: APPENDICES
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
Figure C-4: Alarm Port Connections
Figure C-5: Diagnostic and AUX DATA (TBOS) Port Connections
Do NOT use both the RS-232 and RS-422 connections at the same time!
DS3 IN
DS3 OUT
Figure C-6: DS-3 Connections (BNC female)
SECTION 5: APPENDICES
PAGE 5-11
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
Index
Accessories ................................................................................................................................................2-22
AIS....................................................................................................... 2-7, 2-13, 2-20, 3-32, 3-33, 3-47, 4-13
Alarms.................................................................................................................................................3-38, 4-7
AMI................................................................................................................. 2-7, 2-20, 3-28, 3-40, 4-18, 5-3
Antenna...........................................................................................2-4, 3-3, 3-11, 3-24, 3-38, 4-9, 4-19, 4-20
Antenna alignment .....................................................................................................................................3-22
Antenna connection....................................................................................................................................3-20
B8ZS ...............................................................................................2-7, 2-20, 3-28, 3-40, 4-18, 4-24, 5-1, 5-2
Bit Error Rate...........................................2-13, 2-14, 3-8, 3-33, 3-38, 3-40, 3-41, 3-47, 4-9, 4-10, 4-17, 4-24
Calculations ..........................................................................................................................................3-6, 3-8
Caution.........................................................................................................................................................1-2
Coding..........................................................................................................................................................5-1
Configuration .............................................................................................................................................3-57
Connections ......................................................................................2-7, 2-8, 2-15, 2-19, 3-25, 3-38, 5-1, 5-2
Controls......................................................................................................................................................2-14
CSU/DSU...................................................................................................................................................3-33
DIP switch................................................................................................................................. 3-27, 3-34, 5-5
DS-1 connection...........................................2-20, 2-22, 3-25, 3-38, 3-40, 3-47, 4-7, 4-17, 4-18, 5-1, 5-2, 5-4
DS-3 connection.........................................................................................................................................2-18
EIRP...........................................................................................................................................................3-35
Environment.................................................................................................................................................2-9
Error LED ..................................................................................................................................................3-42
Fade ......................................................................................................................................................2-6, 3-7
FAN ...........................................................................................................................................................4-14
Frequency.................................................................................................................................... 3-9, 3-13, 4-2
Front panel .................................................................................................................................................2-11
Icons.............................................................................................................................................................1-2
Installation ..................................................................................................................1-1, 3-1, 3-3, 3-22, 3-34
Interference ................................................................................................................................................4-19
LBO (Line Build Out)...................................................................................................... 3-29, 4-9, 4-17, 4-18
Line code ...................................................................................................................................................3-28
Loopback ............................................................................................... 2-7, 2-14, 2-21, 3-30, 3-40, 4-9, 4-17
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
Mechanical.................................................................................................................................................2-10
MHS...........................................................................................................................................................3-56
Mounting....................................................................................................................................................3-15
Note .............................................................................................................................................................1-2
Orderwire ............................................................................................. 2-8, 2-19, 2-21, 3-34, 3-38, 3-43, 3-44
Output power .............................................................................................................................................3-36
Path .......................................................................................................................................................3-3, 3-5
Power ............................................................................. 2-3, 2-9, 2-22, 3-3, 3-10, 3-16, 3-17, 3-39, 4-9, 4-20
Power connection..............................................................................................................................3-16, 3-19
Professional installation ......................................................................................................................1-1, 2-22
Rear panel .........................................................................................................................................2-16, 5-10
Receive signal level ............................................ 2-12, 2-14, 3-3, 3-6, 3-22, 3-23, 3-24, 3-37, 3-47, 4-9, 4-21
Receiver .......................................................................................................................................................2-5
Regulatory.............................................................................................................................................iii, 2-10
Repair...........................................................................................................................................................4-5
Repeater configurations ....................................................................................................................3-54, 3-55
RS-232/RS-422 .....................................................................................................2-19, 3-48, 3-49, 3-50, 3-53
Spreading Code..........................................................................................................................................3-31
Switches .......................................................................................................................................................4-2
Synchronization .........................................................................................................................................4-12
System..........................................................................................................................................................2-6
TBOS ...............................................................................2-19, 2-20, 2-21, 3-43, 3-48, 3-51, 3-52, 3-53, 3-54
Technical Support ........................................................................................................................................4-4
Test .....................................................................................................................................................2-8, 2-12
Tips ..............................................................................................................................................................1-2
Tools ..........................................................................................................................................................3-12
Transmission line .......................................................................................................................................3-21
Transmitter...................................................................................................................................................2-3
Troubleshooting ...........................................................................................................................................4-1
Warranty ......................................................................................................................................................... v
INSTALLATION AND MAINTENANCE MANUAL
LYNX DS-3 (45 Mbps)
LICENSE-FREE (U-NII, LE-LAN) RADIOS
MARCH 2000
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