Vecima Networks PA700 Amplidier User Manual ml pa700 03
Vecima Networks Inc. Amplidier ml pa700 03
Users Manual
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| Date Submitted | 2005-01-19 00:00:00 |
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700 MHz Band
Power Amplifier
PA700-T740_746
INSTALLATION AND OPERATION GUIDE
FOR SYSTEM OPERATORS
Proprietary to VCom Inc.
All rights reserved.
No part of this publication may by reproduced in any form or by any means or used to make any derivative work (such as translation,
transformation or adaptation) without written permission from VCom Inc.
VCom Inc. reserves the right to revise this publication and to make changes in content from time to time without obligation on the part of
VCom Inc. to provide notification of such revision or change.
VCom Inc. provides this guide without warranty of any kind, either implied or expressed, including, but not limited to, the implied warranties
of merchantability and fitness for a particular purpose. VCom Inc. may make improvements or changes in the product(s) described in
this manual at any time.
PA700 Manual; ml_pa700_01 (November 2004); Approved: C.H.
Specifications subject to change without notice — Printed in Canada
VCom Inc.
PA700 Manual; ml_pa700_03 (January 2005)
Approved: C.H.
ii
Thank-you for purchasing this product
and welcome to VCom!
You have chosen an innovative solution from a leading
technology design center in the ongoing TV & data delivery
revolution.
No doubt you’ve been thinking that the future of your television delivery system includes new technologies
such as Digital TV, Internet Over Cable, Wireless Cable. By selecting VCom, you are benefiting from the
same design powerhouse that since 1988 has created custom RF and digital products for technology leaders
such as AT&T, Cisco Systems, Cogeco, Comcast, and Cox Communications.
VCom designs and manufactures:
Agile CATV Modulators
256 QAM Upconverters
Digital Video Modulators
Frequency Translators
Spread Spectrum Devices
MMDS Transceivers
Off Air/CATV Demodulators
Wireless Cable MMDS
Wireless Cable LMDS
Video On Demand Products
and more! Designs to fill the market needs of the CATV industry – both foreign and domestic.
For additional product or corporate information, contact us:
On the web at:
By sending email to:
By telephone:
By fax:
By snail mail:
www.vcom.com
sales@vcom.com
(306) 955-7075
(306) 955-9919
VCom Inc.
150 Cardinal Place
Saskatoon, SK Canada S7L 6H7
VCom's Corporate Mandate
is to be a leading worldwide designer and manufacturer of stateof-the-art communications equipment and components. Through
the remarkable success of our customers and business partners,
VCom innovations are achieving this goal.
VCom Inc.
PA700 Manual; ml_pa700_03 (January 2005)
Approved: C.H.
iii
☛
Important Installation Instructions
SAFETY PRECAUTIONS
1. Before installing and operating this equipment, read all Safety, Installation and Operating sections. Retain
this manual for future reference.
2. Follow all instructions — Failure to do so may result in damage to the unit or severe personal injury.
3. Servicing should not be attempted by the user. There are no user serviceable parts inside. Refer all
servicing to factory qualified personnel.
4. Cleaning — Do not use liquid or aerosol cleaners. Use a damp cloth for cleaning.
Warning Do not work on the system or connect or disconnect cables during periods of lightning activity.
LES PRÉCAUTIONS DE SÉCURITÉ
1. Avant d'installer ou d'opérer cet équipement, lisez, toutes les sections de sécurités, d'installations et
d'opérations. Gardez ce manuel comme source de référence.
2. Suivez toutes instructions - si non, vous risquez d'endommager la machine ou de vous blesser
sérieusement.
3. N'essayez, pas de réparer cet équipement vous même. Référez toutes revisions nécessaire au personnel
qualifié de la manufacture.
4. Le nettoyage - n'utilisez pas de nettoyeurs aérosols ou liquides. Utilisez un tissu humide pour nettoyer.
Attention Ne pas travailler sur le système ni brancher ou débrancher les câbles pendant un orage du
foudre.
VCom Inc.
PA700 Manual; ml_pa700_03 (January 2005)
Approved: C.H.
iv
INDEX
1.0 GENERAL INFORMATION ......................................................................................................... 6
1.1 Functional Overview................................................................................................................................6
1.2 Features.....................................................................................................................................................6
1.2.1 Amplifier Features:...............................................................................................................................6
1.2.2 System Features (with UCD4940): ......................................................................................................6
2.0 INSTALLATION.......................................................................................................................... 11
2.1 Unpacking the Unit ................................................................................................................................11
2.2 Installing the Unit...................................................................................................................................11
3.0 Connection With MSM................................................................................................................. 13
5.0 WARRANTY STATEMENT AND SERVICE POLICY ............................................................ 16
5.1 Warranty Statement ..............................................................................................................................16
5.2 Service Policies: How to Return an Item for Service:.........................................................................16
5.3 Repair Charges and Warranty Exemptions ........................................................................................17
VCom Inc.
PA700 Manual; ml_pa700_03 (January 2005)
Approved: C.H.
The PA700-T740_746 is a solid state, fixed gain power amplifier for operation in the US 700 MHz frequency
band. Advanced LDMOS design permits the PA700 to operate with high level digital signals such as 64QAM,
DVB-T or 8-VSB DTV. The PA700 can be operated on a stand-alone basis or controlled via SNMP or front
panel display when serially connected to a UCD4940. Together, the PA700 and UCD4940 offer a complete
solution for up-conversion, down-conversion and high linearity amplification in a rack mount configuration
requiring only 4U of rack space*. This advanced, cost effective power amplifier offers high performance and
flexibility in a space-efficient design. The unit is state of the art in terms of easy assembly, reliability and
performance.
The PA700 is factory configured and calibrated for operation at a specific band.
•
80W typical transmit power with 64QAM or DVB-T modulation
•
Alarms and automatic protection for RF faults, over-temperature, over-drive, output VSWR, and over-current
•
Enable/disable via front panel switch or two pole rear connector
•
Monitor and control via RS232/RS485
•
International switching power supply (100 to 240 VAC)
•
Local control via LCD and 4 soft touch push buttons
•
Remote control and monitoring via RS232/RS485, Terminal or optional SNMP
•
Automatic level control
•
44 MHz input for up-conversion and amplification of IF modulators or Cable Modem Termination Systems
"#
% &'()*) +!
VCom Inc.
PA700 Manual; ml_pa700_03 (January 2005)
Approved: C.H.
,"
RF
Output Frequency
Linear Output Power
Gain
Gain Flatness
Spurious
Inband
Out of band
Input/Output Connectors
Input Return Loss
Output Return Loss
RF Monitor
RF Monitor Port
740 to 746 MHz
+49 dBm (80W)
56 dB ± 2 dB, fixed
±0.3 dB over 6 MHz
-55 dBc
-55 dBc
N female, 50 ohms
16 dB
18 dB
SMA female, 50 ohms
-42.5 ± 2 dB
MONITORING AND ALARMS
Remote Control Interface
Standalone
With UCD4940**
RS232 via DB9, RS485 via RJ45
Front panel LCD push button, RS232/RS485, Terminal
(RJ45) or optional SNMP over 10BaseT ethernet
Enable, RF fault, Over-temperature, Input Over-drive,
Over-current, Max. Reflected Output power Exceeded
RF Input Power, RF Output Power, Temperature,
Supply Voltage, Automatic Protection
Over-temperature, Input Over-drive,
Reflected Output Power, Over-current
Power Supply OK, Alarm, Enable
Status/Alarms
Monitors (with UCD4940)
LED Indicators
MISCELLANEOUS
Dimensions
Mounting
Weight
Operating Temperature
Power Requirements
Power Consumption
17.25” (w) x 18” (d) x 5.25” (h) (43.8 x 45.7 x 13.3 cm)
Standard 19” rack - 3U (5.25”)
33 lbs. (15 kg.)
0 to 45°C
100 to 240 Vac, 50 to 60 Hz\
500W maximum
* Rack space for output filtering not included.
** When configured for monitoring via the UCD4940, the standalone terminal interface is disabled.
Specifications subject to change without notice.
VCom Inc.
PA700 Manual; ml_pa700_03 (January 2005)
Approved: C.H.
)
DIAGRAM 1.4A: PA700 FRONT PANEL
VCom Inc.
PA700 Manual; ml_pa700_03 (January 2005)
Approved: C.H.
DIAGRAM 1.4B: PA700 REAR PANEL
VCom Inc.
PA700 Manual; ml_pa700_03 (January 2005)
Approved: C.H.
DIAGRAM 1.4C: PA700 SIDE AND TOP VIEW
VCom Inc.
PA700 Manual; ml_pa700_03 (January 2005)
Approved: C.H.
10
"
. / % &
Carefully remove the equipment from its packing material and set it on a solid surface, such as a table or
desk. If it appears damaged in any way, notify the carrier, and keep all packing materials for inspection by the
carrier’s agent.
/ % &
Note: This unit should be installed by qualified service personnel only.
Diagram 2.2 details the input and output connections for the PA700.
1. Carefully identify between the electrical ground of the AC power supply and the station ground that is
common to the antenna system, other RF components and the transmitter rack cabinet. Ensure that
the PA700 and the CMTS ground points are connected to the station ground and not the electrical
ground.
2. If installing the PA700 into an equipment rack, use the 4 mounting holes on the front of each cabinet.
It is also important to connect the rear side of the PA700 chassis to the same rack cabinet using a
rear support bracket (not supplied).
3. It is suggested that a heavy gauge line cord (No. 10 AWG stranded) with connector be used in most
applications for connection to the AC power supply. The AC power connector and station ground stud
are located on the rear panel (refer to Diagram 1.4B).
4. Prior to connection, please ensure that the frequency, modulation and BW of the CMTS or
CMTS/upconverter are set for the application. PA700 type approval for the US lower 700 MHz band
under FCC Part 27 is only valid for the following input frequency and modulation combinations and
only when the VCom duplexer is connected between the output and the antenna.
Carrier Bandwidth
Center Frequency
Range
Modulation
2 MHz
741-745 MHz
6 MHz
743 MHz only
QPSK, 16QAM,
64QAM
QPSK, 16QAM,
64QAM
5. Adjust the input level so that the input power to the unit is nominally -7 dBm.
6. Connect both upconverter/CMTS to unit and duplexer/antenna assembly
7. Adjust input level so that output power is +48 to +49 dBm as reported by MSM server or the
UCD4940. Opeartion below this level will result in less than optimal performance and operation above
this level may violate regulatory emissions requirements.
WARNING!
Maintain a distance of at least 10mm (3/8 “) between PA700 units when
mounting several units in a rack.
The rear air outlets should be unobstructed.
VCom Inc.
PA700 Manual; ml_pa700_03 (January 2005)
Approved: C.H.
11
DIAGRAM 2.2: PA700 SYSTEM CONNECTIONS
VCom Inc.
PA700 Manual; ml_pa700_03 (January 2005)
Approved: C.H.
12
,
In order for the PA700 to be monitored by the MSM software package, the PA700 must be connected to the
MSM server computer as illustrated in diagram 3.1. The required cables are included with the AC3000 kit.
DIAGRAM 3.1: CONNECTION WITH MSM
VCom Inc.
PA700 Manual; ml_pa700_03 (January 2005)
Approved: C.H.
13
)
&2
"1
“My amp is cutting-in/cutting-out repeatedly”
“My amp is unstable”
The amp may be in shutdown mode due to an input level that is too high, or due to a high amount of
reverse-power being detected. Reverse-power is really reflected power – often caused by a fault between the
PA700 and the antenna, or by operation at a frequency outside of the DPX700 passband.
All LEDs are off
• Ensure that the PA700 is plugged in to the power source
• Check the FUSE led on rear panel; if the light is on, replace the fuse
• If failure persists please contact technical support
Only the MAINS led light is on, but enable does not work
• Check that all three enables (LOCAL, REMOTE, SOFTWARE) are present
• Check RF IN, RF REF and TEMPERATURE alarms
Enable ON, VDC absent
• Possible power supply fault
Enable and VDC ON, RF Output Power Absent
• Check that the input is valid
• Check for alarms. Some conditions result in muted output power.
Frequently occurring thermal protection conditions
• Check that air outlets are not obstructed
• Check the amount of dust on heatsink
Amplifier VSWR alarm condition
• Too much power is being reflected by the antenna/duplexer/cable feed
• Verify that connections and cables are intact
• Impedance at the duplexer must be 50 ohm
Amplifier mute due to over-drive
• Check the input level
• Input level and amplifier gain should not exceed +49 dBm
No gain
• Check the input and alarms
Too high output distortion
• Check the output power level. Output should not exceed 49 dBm.
VCom Inc.
PA700 Manual; ml_pa700_03 (January 2005)
Approved: C.H.
14
No RS232 communication
• Press reset (this may result in a service interruption)
• Check the connector on front panel
• If failure persists please contact technical support
No RS485 communication
• Press reset (this may result in a service interruption)
• Check the connector on rear panel
• Disconnect RS232 com and press reset
• If failure persists please contact technical support
VCom Inc.
PA700 Manual; ml_pa700_03 (January 2005)
Approved: C.H.
15
3
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#"
VCom warrants its products to be free from defects in workmanship or materials for a period of two years.
The warranty begins on the date of the original shipment from VCom to its customer. No claim may be
allowed for expenses incurred in installation or use. No other expressed or implied warranties shall apply to
the goods sold. VCom is not responsible for delayed shipments, other loss beyond VCom’s control, or
consequential damages of any kind arising in connection with the use of its products. This warranty is a
return-to-factory warranty only. During the warranty period VCom will at its option, replace, repair or refund
the price paid for any item which is returned for service. This warranty does not apply to units that have been
physically or environmentally abused.
!1
Before returning any item for service, an R.M.A. (Returned Material Authorization) number must be assigned
by VCom. A unique R.M.A. number will be assigned for each item being returned. When requesting an
R.M.A. number, please be prepared to provide the model, VCom serial number, original invoice number, your
purchase order number and an adequate fault description. The serial number of a unit can be found on a
barcode label similar to the one pictured below. R.M.A. service is available Monday to Friday from 8:30 a.m.
to 4:30 p.m. CST (statutory holidays excepted).
To obtain an R.M.A. number you may:
Call: (306) 955-7075, press ‘0’ for Operator, or ‘3’ for Service Dept.
Fax: (306) 384-0086 — Attention: R.M.A. Request
Email: support@vcom.com
Once an R.M.A. number has been assigned, please refer to it in all correspondence and make certain that all
applicable R.M.A. numbers are clearly marked on the outside of each package being returned. You must also
ensure that each product is shipped to VCom in its original shipping container (or equivalent) via Prepaid
carrier, with appropriate insurance and customs documentation (where required). VCom will not accept
collect shipments, damaged shipments or shipments unaccompanied by an R.M.A. number.
For items still under Warranty – Items will be returned from VCom Inc. to its customer via prepaid ground
carrier. The customer is responsible for any additional costs incurred, including custom clearance and duties.
Any alternate means of shipment must be requested by the customer and will be subject to additional
charges.
For items no longer under Warranty – Items will be returned from VCom Inc. to its customer via prepaid
ground carrier at the customer’s expense. The customer is responsible for any additional costs incurred,
including custom clearance and duties. Any alternate means of shipment must be requested by the customer
and will be subject to additional charges.
Shipping Instructions will be provided by the repair center when the RMA number is sent to the
customer.
VCom Inc.
PA700 Manual; ml_pa700_03 (January 2005)
Approved: C.H.
16
3,
'%
60
# 7
Items returned beyond the warranty period or items that do not qualify for warranty service are subject to
additional out-of-warranty repair charges. Descriptions of these charges and warranty exemptions are below:
1) Repair turnaround time is typically 5-14 business days after receipt of the item at VCom. A Flat Rate Repair
Charge will apply to all out-of-warranty items. Flat Rate Repair Charges are subject to change without
notice.
2) Any faults due to customer error (ie - incorrect set-up or configuration settings) are subject to the current
Test Fee and will be exempt from warranty.
3) Items returned with inadequate fault descriptions are subject to the current Test Fee and are
exempt from warranty.
4) In the event that no fault is found, the item is subject to the current Test Fee and will be
exempt from warranty.
5) Any product exhibiting external damage (either from shipping, improper handling or use) will be subject to
inspection. If said damages are determined to be the cause of failure, the item will be exempt from
warranty.
All repairs to correct the external damage are subject to Time & Materials Charges (parts and labor at
current rates).
6) Items with damage caused by unauthorized repairs or by external devices are subject to current out-ofwarranty Flat Rate Repair Charges and are exempt from warranty.
7) All products returned for Factory Optioning are subject to the applicable current Option Charge plus Test
Fee. Factory-optioned products carry the balance of the original warranty or a 90-day warranty, whichever
is greater.
All out-of-warranty repairs must be approved by the customer in writing. No repairs will be made until the
customer’s Purchase Order or Out-Of-Warranty Repair Authorization is received.
VCom Inc.
PA700 Manual; ml_pa700_03 (January 2005)
Approved: C.H.
17
150 Cardinal Place
Saskatoon, Saskatchewan
S7L 6H7
Canada
Tel: (306) 955-7075
Fax: (306) 955-9919
www.vcom.com
sales@vcom.com
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