Larus 9000 E1/DS1 SPREAD SPECTRUM 5.78 GHz DIGITAL RADIO User Manual System Description 1

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Document Description	System Description 1
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Document Type	User Manual
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Date Submitted	2000-04-01 00:00:00
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Larus Corporation 80-100—281 “
Company Practice lssuedr September 1999
OuadHoppas'rTM
MODEL 9000
E1/DS1 SPREAD SPECTRUM 5.78 GHz
DIGITAL MICROWAVE RADIO SYSTEM
VOLUME 1
System Description
This practice appfies to the following equipment:
Model Equip Issue Model Equip Issue
00701794000 041-02110-XXX |
007-01794-001 5702-1 1,2,3,4
007-02063-000 5702-3
007~0207B-001
007-02079»000
00702079001
007-02109-000
9021-0
9020-0 1
9021-1 1
007-02078-000 1 7509-3
Larus Corporation
1560 Berger Drive, San Jose] CA 95112 (408) 494—1500
LORUS
Disclaimer
Larus Corporation makes no representation or warranties with respect to the
contents of this document and specifically disclaims any implied warranties of
merchantability or fitness for any particular purpose. Further, Larus Corporation
reserves the right to revise this publication and to make changes in its content from
trne to time without obligation of Larus Corporation or its agents to notify any
person or organization of such revisions or changes.
FCC Notice
FCC ID:
The Federal Communications Commission (FCC) Rules define issues concerning
radio frequency emissions. The Model 9000 equipment complies with FCC Part
15.247 which specifies the license-free operation of spread spectrum radio
equipment within the 5,730 to 5.845 GHz band reserved for industrial, scientific,
and medical (ISM) applications. Operation is subject to the following two
conditions: (1) this device may not cause harmful interference and (2) this device
must accept any interference received, including interference that may cause
undesired operation.
Professional Installation
The FCC type acceptance for this product requires professional installation to
ensure that the equivalent isotropically radiated power (EIRP) meets FCC Part
15.247. Contact Larus Corporation for engineering assistance and recommended
qualified installation contractors
INDUSTRY CANADA Notice
CANADA RSS-21O
Canada ID:
The industry Canada Rules (Canada 210) define issues concerning radio frequency
emission. The Model 9000 equipment complies with Canada 210 which specifies
the license-free operation of spread spectrum radio equipment within the 5.725 to
5.850 GHz band reserved for industrial, scientific, and medical (ISM) applications.
Operation is subject to the following two conditions: (1) this device may not cause
harmful interference and (2) this device must accept any interference received,
including interference that may cause undesired operation.
Professional Installation
The industry Canada Rules type acceptance for this product requires professional
installation to ensure that the equivalent isotropically radiated power (EIRP) meets
Canada 210. Contact Larus Corporation for engineering assistance and
recommended qualified installation contractors.
GuadHopper" is a registered trademark of Laws Corp.
Copyright © 1999 Larus Corporation
All Rights Reserved
Printed in U.S.A.
Contents
1 Introduction
1.1 General ........ . .
1.2 System Overview . . . .
2. Digital Microwave Radio System
2.1 Applications
Features .....
Components . . .
Material Supplied . . .
Material Required ..... .
Optional Configuration . . .
NPNNP
(Durham
ystem Functional Overview
.1 Spread Spectrum Frequency Plan
.2 Customer [51/081 Connections ‘
.3 Controller/RF Signal Interface
.4 Transmitter Overview ........
.5 Receiver Overview . . .
.6
.7
.8
Controller Overview . .
Primary Power ......... .
Alarms ..................
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4. Physical Characteristics
5. Performance Standards . .
64 Technical Specifications
7. Operating Instructions
71 Controls and Displays ................
7.11 Option Settings ...............
7.12 Alarm Indicators . .
7.2 Reconfiguration ....................
7.21 Terminal Operating Instructions . . . .
7.22 Setting Maintenance .......
7.3 Field Diagnostic Tests ...............
7.4 Radio System Turnup and Acceptance . . . .
7.41 Test 1: E1 Loopback ...........
7.42 Test 2: End-to-End Path Continuity .
7.43 E1/D81 Test Interface
8. Maintenance
94 Warranty
10. Equipment Issue Information
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. 7-1
. 7-1
. 7-4
. 7-4
. 7—5
741
7-12
7-12
7-12
7-14
7.15
9—1
Larus 80-100-281 Issue 1, September 1999
Lnrus 80-100-281
Issue 1, September 1999
mg
Figures
1-1 Model 9000 Spread Spectrum 5.78 6111
Digital Microwave Radio System ...... 1-2
3-1 Model 9000 Radio Functional Block Diagram . . . . 3-2
3-2 Model 9000 Frequency Pian ............ . . . 3-3
3-3 Data Circuit Maintenance .............. . . . 3-7
3-4 LOCAL Port Cable Wiring (9-Pin to 25~Pin) . . . . . 3-7
3-5 LOCAL Port Cable Wiring IQ-Pin to Q-Pinl . . . . . . 3-8
3-6 REMOTE Port Cable Wiring i9-Pin to 25-Pin) . . . . 3-8
7 1 RF/Ccntroller Assembly Front Panel . . .
7-2 RF/Controller Assembly Rear Panel . . . .
7-3e Model 9000 Radio Field Test #1 .....
7-3b DSX Loopback Test (Test in) ....... . . . . 7-13
7-4 Model 9000 Radio Field Test #2 ..... . . . . 7-14
7-5 Model 9021 E11051 Test Interface . A A . . . . 7-15
Tables
Model 9000 Ordering Information 2-3
E1IDS1 Interface Connector Pin Assignments . . 3-4
introduction 1
General
This practice presents an overview of the functional operation, features,
and applications of the Model 9000 E1/D31 Spread Spectrum 5.78 GHZ
Digital Microwave Radio System. It also provides instructions for operating
the radio in its common applications.
1.12 This paragraph is reserved for future issue changes. Practice Issue 1
applies to equipment listed in Section 10, Equipment Issue information.
System Overview
The Laws Model 9000 is a high stability microwave radio system using
spread spectrum and forward error correction technology. It offers an
exceptionally reliable, license-free solution for short to medium haul digital
link requirements with up to four E1 or D51 lines.
The 9000 radio interconnects digital links between near-end and far~end
locations. At each end, the radio system consists of a single antenna and
a Radio Frequency (RF) Module and Control Module assembly. (Refer to
Figure 1-1); The Model 9000 complies with FCC Part 15.247 and
Canada 210, which specify the license»free operation of spread spectrum
radio equipment within the 5.730 to 5.845 GHz band reserved for
industrial, scientific, and medical (ISM) applications.
An extensive degree of integration and a compact design ensure reliability
and make any radio faults easy to diagnose and repairt
Larus 80-100-281 Issue 1, September 1999 1-1
Larus 50-100-281
Issue 1, September 1999
Figure 1-1. Model 9000 Spread Spectrum 5.78 GHz
Digital Microwave Radio System
Digital Microwave Radio System 2
Applications
The Model 9000 is an ideal solution for point-to-point spans where
conventional connections provided by the public telephone network are
either unavailable, impractical, or not cost-effective. These applications
can include:
Building to building communication across a campus
Spans across public thoroughfares
Urban links between separate facilities
Drop and reinsertion points to long-haul backbones
Cellular telephone site interconnections
Emergency communications links
Spur route feeders
Mountainous terrain
Spans over water
coo-noo-
2.2 Features
The Model 9000 is configured with standard features that ensure its
flexibility for- the many applications for which it is suited. These features
include:
No FCC or Industry Canada license requirement (complies with FCC
Rules Part 15.247 and Canada 210)
Voice or data capability
Acceptance of from one to four E1 circuits [120 pulse code modulation
(PCM) or 240 adaptive delta pulse code modulation (ADPCM) voice
channels] or one to four 051 circuits (96 PCM or 192 ADPCM)
Path lengths up to 50 miles
Built-in diagnostics and alarms
Field selectable scramble code
HDBGl line code for E1 interface, alternate mark inversion (AMI) or
bipolar eight zero substitution (8825) for 051
9600 bps EIA-2320 ports for near-end and far-end console operation
Larus 80-100-281 issue 1, September 999 21
Larus 80-100-281
Issue 1. September 1999
2.23
2.31
2.41
2-2
Since the Model 9000 complies with FCC Rules Part 15.247 and
Canada 210, any number of radio links can be put into operation as
required without the need to notify the FCC or Industry Canada for
licensing or operating changes. The low-power design of the radio
minimizes radio frequency (RF) radiation hazards, allowing it to be installed
virtually anywhere that a clear path exists from antenna to antenna.
The 256 possible scrambling codes ensure that interference from similar
nearby transmitters is at an absolute minimum. They also provide a
virtually secure communications link. The radio can be remotely configured
through either of two maintenance data interfaces on the device, provided
that a modem is connected to the far-end port. This feature offers the
advantage of setting up the radio or changing its operating parameters from
one end. The maintenance data interface ports can also be used to monitor
system status and alarms.
Components
Due to FCC and Canada 210 regulations for equipment operating in the
industrial, scientific, and medical (ISM) band, individualized options that
affect spectrum spread and output power are not available on a per radio
basis. However, the Model 9000 can be ordered in one of two standard
configurations. Refer to Table 2-A for ordering information.
Options that the user can set include cable equalization for five different
cable lengths and pseudorandom number (PNS) scrambling and
descrambling codes.
Material Supplied
Each end of the radio system consists of a Control Module and RF Module
assembly designed for indoor installation and an outdoor antenna. Included
with each radio are this manual and the following hardware:
RF Module, High Frequency Transmit/Low Frequency Receive, plus
4 x El or 081 Control Module
RF Module. Low Frequency Transmit/High Frequency Receive, plus
4 x El or 051 Control Module
Installation kit
Section 2 — Digital _Microw_ave Radio System
Table 2-A
Model 9000 Ordering Information
HlGH END
eébfiitéfioh '
RF Module, High
Freq th and Low
Freq Rcv, plus 4 x
E1 Control Module
RF Module, High
Freq th and Low
Freq Rcv, plus 4 x
DS1 Control Module
Spare RF Module.
High Freq th and 007-02078-000
Low Freq Rcv
020-02106-000
020-02106-001
Description
Modem Board, 4 x E1
Modern Board, 4 x DS1
Power Supply Board
Control Module, 4_ x E1
Control ModuIe, 4 x D81
23" rack
Antenna Jumper Cable
(2 required per 051 per end)
3 feet
Frequency Translator, 5.7 GHz
DS1 Tast Interface (Test Adapter)
E1 Test Interface (Test Adapter)
‘ OPTIONS
Installation Kit, RFIControIIer Assembly mounted in 19" or
DS1 Single-ended Route Diversity Switch Circuit Pack
LOW END as
«ewes-mm. Part Number
RF Module, Low
Freq th and High
Freq Rcv, plus 4 x
E1 Control Module
RF Module, Low
Freq th and High
Freq Rcv, plus 4 x
DS1 Control Module
Spare RF Module,
Low Freq th and
High Freq Rcv
020-02107-000
020-021 07001
007-02078-001
Part Number "
007'01794-000
007-01794-001
007-02068-000
007-02079—000
007-02079-001
007-02109-000
041-02110-XXX
5702 List 1
RouteSwitch" 12-slot, 19" shelf (6 DS1 capacity) 5702 List 3
Cable with N-type Connectors, RF Module to Waveguide,
7509 List 3
9020 List 0
9021 List 0
9021 List 1
Note: Contact Larus Sales Ior antenna options, special antenna mounting
arrangements, lightning protection. and custom inetaII-tien.
Lerus 80-100-281
Issue 1 September 1999 2-
(A)
System Functional Overview 3
The Model 9000 radio provides a digital interface that interconnects the
customer E1 or DS1 signals to the Control Module and provides alarm relay
contact and maintenance data connections for customer use. (A block
diagram of the radio appears in Figure 3-1.) The customer's local
-24/—4B V battery is used to power the Model 9000 units. The radio
mounts indoors and is connected to an antenna via coaxial cable (for short
runs) or elliptical waveguide (for long runs). A Larus proprietary
multiplex/demultiplex lmuldeml circuit combines up to four E1 or DS1
signals into a multiplexed transmit signal. The circuit also demultiplexes
the demodulated receive signal into up to four E1/DS1 signals for output to
the E1/DS1 interface.
The Radio Frequency Module is a complete radio transceiver. The
transmitter is a conventional design with a modulator, intermediate
frequency (IF) to radio frequency (RF) translation stages, and output circuits
with bandpass filter, amplifier, and circulator. In addition, it uses direct
sequence signal spreading circuits. The receiver is similarly conventional
with a Iow~noise amplifier and bandpass filter in its front end. The
receiver's RF to IF translation stages use the output from the same
up/down converter used by the transmitter.
Despreading circuits recover the spread spectrum signal from the IF before
the signal intelligence is demodulated as a multiplexed signal from the IF
signal. The Larus muldem demodulates the multiplexed signal into four E1
or 081 signals, after which E1/DS‘l interface circuits send the E1/DS1
signals on to the customer. The control module also provides outputs for
minor and major alarms and two ElA-23ZD ports for maintenance
communications with the far end.
3.1 Spread Spectrum Frequency Plan
The output signal of the 9000 radio system occupies the 5.730 GHz to
5.845 GHz frequency band assigned for unlicensed, spread spectrum use.
Figure 3-2 shows how this spectrum is used by the Model 9000.
Larus 80-100-281 Issue 1 September 1999 3-1
Issue 1, Septembcr 1999
Lama 80-100-281
5926 tea 5.635“. 32m 88 3.85.
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5 SGND SGND 5
6 DSR DSR 6
7 RTS RTS 7
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9 RI RI 9
Figure 3-5. LOCAL Port Cable Wiring (9-Pin to 9-Pin)
REMOTE port MODEM
DTE (DB-9 male) DCE (DB-25 male)
pin pin
1 D00 DCD 8
2 RXD “ RXD 3
3 TXD “— TXD 2
4 DTR DTR 20
5 SGND “— SGND 7
6 DSR “ DSR 6
7 RTS RTS 4
8 CTS “— CTS 5
9 RI h RI 22
Figure 3-6. REMOTE Port Cable Wiring (9-Pin to 9-Pin)
Section 3 — System Functional Overview
Primary Power
Two facility battery circuits provide redundant primary power input
(-24/—48 VA and —24/—48 V5) to the Model 9000. The 9000 control
module has a power supply that converts input voltage to power local logic
circuits. A single coaxial cable carries primary power from the controller to
the RF module.
Alarms
The modem board, internal to the controller, has connections for standard
Form A dry relay contact closures for visual and audible minor and major
alarms. The major alarm relay is connected failsafe so that, if both primary
power inputs are lost, the relay contacts close A local alarm cutoff (ACO)
switch allows current audible alarms to be reset; visual alarm closures
remain active until the fault causing the alarm is cleared.
Larus 80-100—281 Issue 1, September 1999 3-9
This page is intentionally left blank.]
3-10
Physical Characteristics 4
4.01 The Model 9000 system consists of two attached mechanical assemblies
(refer to Figure 1-1). The Control and Radio Frequency (RF) Modules are
designed for indoor use and can be installed in either a 19-inch or 23~inch
rock. The two devices are interconnected via a single coaxial cable. The
RF module connects to an antenna through a suitable coaxial cable feedline
(see Larus Practice 80-601-281, Site Planning and Preparation).
Larus 80-100-281 lssue 1 September 1999 4-1
[This page is intentionally left blank‘
Performance Standards
The Laws OuedHoppef' provides performance equal to. or better than, a
standard microwave radio link or cable and conforms to E1/DS‘l
performance standards as outlined by Bellcore.
A detailed site survey must be performed per Larus specification (refer to
Larus Practice 80-601-281) and the system must be installed by trained.
professional technicians.
OuedHopper" Grade of Service
The mus QuadHopper" ENDS!
{radio system is designed to
provide 99325 96 availability
i643 seconds unavefleble per
day) and 98.75 96 error free
seconds (no more than 1080
errored seconds per day) with
fewer than 4 severely errored
seconds per clay. iTerms~are
defined; on page 5—34 This
assumes ‘that the system has
' been installed according to the
'menufa“cturer‘s published
specification as outlined in Larus
Practices. The calculation
represents the worst case limits
on performance. Availability is
averaged over three months and
error free and severely errored
seconds are averaged over one
day.
Over a 3—day period there should
be fewer than 3240 errored
seconds, 12 severely errored
seconds, and 195 seconds of
unavailability, measured round
trip [both ways). This would“,
verify that the link is two times
better than the objective of
99.925 96 availability.
The next higher grade of service
for an EiIDSi as defined by
Ballcore would affect availability
only, and that would increase to
99,995 96. This would equate to
fewer than 432 seconds of
unavailability per day or fewer
than 13 seconds in 72 hours.
Larus 80-100-281
Issue 1, September 1999

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