Nortel DualMode 800 User manual

Wireless Solutions
DualMode 800 Enclosure
Maintenance Manual
MTX08 Draft 00.01 November 1999
DRAFT
411-2051-500

Wireless Solutions
DualMode 800 Enclosure
Maintenance Manual
Document number: 411-2051-500
Product release: MTX08
Document version: Draft 00.01
Date: November 1999
Copyright Country of printing Confidentiality Legal statements Trademarks
Copyright 1999 Nortel Networks Corporation, All Rights Reserved
Printed in Canada
NORTEL NETWORKS CONFIDENTIAL
The information contained herein is the property of Nortel Networks and is strictly confidential. Except as expressly authorized in
writing by Nortel Networks, the holder shall keep all information contained herein confidential, shall disclose it only to its employees
with a need to know, and shall protect it, in whole or in part, from disclosure and dissemination to third parties with the same degree
of care it uses to protect its own confidential information, but with no less than reasonable care. Except as expressly authorized in
writing by Nortel Networks, the holder is granted no rights to use the information contained herein.
Information is subject to change without notice. Nortel Networks reserves the right to make changes in design or components as
progress in engineering and manufacturing may warrant.
This equipment generates, uses and can radiate radio frequency energy. If not installed and used in accordance with the instruction
manual, this equipment may cause harmful interference to radio communications. Operation of this equipment in a residential
area is likely to cause harmful interference, in which case the user will be required to correct the interference at their own expense.
DMS, DMS-MTX, DualMode, MAP and NORTEL are trademarks of Nortel Networks.
Trademarks are acknowledged with an asterisk (*) at their first appearance in the document.

Nortel Networks Confidential v
Wireless Solutions DualMode 800 Enclosure Maintenance Manual MTX08
Publication history
October 1999
Draft 00.01. Draft issue of document for internal review.

vi Publication history Nortel Networks Confidential
411-2051-500 Draft 00.01 November 1999

Nortel Networks Confidential vii
Wireless Solutions DualMode 800 Enclosure Maintenance Manual MTX08
Contents 1
About this document xiii
Audience for this document xiii
Organization of this document xiv
Related documents xiv
Equipment operation 1-1
Alarm Control Unit 1-1
Selecting an option 1-3
Input option 1-4
Output option 1-6
General option 1-8
DualMode Cell Site Monitor (DCSM) 1-9
Stand-alone mode operation 1-10
The Hughes M6200 handset (NT3P75AB) 1-10
Programming the mobile 1-12
Operating the mobile 1-21
Transmit Receive Unit (TRU) 1-22
The front panel display interface 1-22
The Terminal Interface 1-26
Fullscreen commands 1-31
Command line mode commands 1-36
Multi-Channel Power Amplifier (MCPA) 1-43
Installing the MCPA software program 1-43
Running the MCPA software on the computer 1-43
Downloading the MCPA firmware to the MCPA shelf (if required) 1-46
Setting the MCPA output power 1-47
Periodic maintenance 2-1
Periodic maintenance records 2-1
Equipment in a DualMode 800 Enclosure 2-2
Transmit Receive Unit (TRU) and Multi-Channel Power Amplifier (MCPA) 2-3
High Stability Master Oscillator (HSMO) 2-3
Alarm Control Unit (ACU) 2-3
Transmit path insertion loss 2-3
Other equipment 2-3
Transmission facilities 2-3
Microwave 2-4

viii Contents Nortel Networks Confidential
411-2051-500 Draft 00.01 November 1999
Copper audio link 2-4
Power 2-4
Battery 2-4
Rectifiers 2-4
Fuses/breakers 2-4
Cabling and connections 2-4
Inside grounding 2-4
Bay bonding 2-5
Cabling and connections 2-5
Principle ground bar 2-5
Transmission line entrance 2-5
Outside grounding 2-5
Tower and associated structures 2-5
Building sheath, fences and other equipment 2-6
Antennas and tower 2-6
Structure 2-6
Tower lighting 2-6
Grounding 2-6
Paint 2-6
Feed 2-7
Antennas 2-7
Pressurized transmission lines 2-7
Site performance 2-7
Fringe coverage 2-7
Handoff checks 2-7
Antenna sweep 2-7
Housekeeping 2-8
Heating/air conditioning 2-8
Dust control 2-8
Statutory requirements 2-8
Site licenses 2-8
Trash and loose articles 2-8
Site grounds keeping 2-8
Building service 2-8
Security 2-8
Manuals and records 2-9
Schedule for periodic cell site maintenance 2-9
DualMode 800 Enclosure Maintenance Reference Chart 2-10
DualMode 800 Enclosure Every Visit Checklist 2-13
DualMode 800 Enclosure MONTHLY Checklist 2-14
DualMode 800 Enclosure QUARTERLY Checklist 2-15
DualMode 800 Enclosure SEMI-ANNUAL Checklist 2-16
DualMode 800 Enclosure ANNUAL Checklist 2-17
Test equipment and precautions 3-1
Test equipment 3-1
Precautions 3-3
Equipment warm-up 3-3
Test equipment 3-3
RF radiation hazard 3-4

Nortel Networks Confidential Contents ix
Wireless Solutions DualMode 800 Enclosure Maintenance Manual MTX08
Electrostatic Discharge (ESD) control 3-4
Power-up procedure 4-1
Overview 4-1
DC power inspection 4-1
Voltage checks 4-2
Master Oscillator tests 5-1
Overview 5-1
Oscillator frequency specifications 5-1
Oscillator power level test 5-2
Reference oscillator tests 5-2
Oscillator frequency test procedure using TRUs 5-4
HSMO frequency test — transceiver carrier method 5-4
Antenna and transmission line tests 6-1
Antenna direct current continuity 6-1
Antenna return loss 6-2
Antenna return loss test 6-2
Thruline wattmeter method (Antenna return loss) 6-4
Antenna sweep 6-4
Enhanced Receive Multicoupler (ERMC) tests 7-1
ERMC description 7-1
ERMC overall gain measurement test 7-1
ERMC gain adjustment 7-4
Talk-In/Talk-out (TITO) balance test 7-4
TITO test procedure 7-5
Alarm Control Unit (ACU) tests 8-1
Overview 8-1
Alarm Control Unit test setup 8-1
Performing tests using a DCSM 9-1
Introduction 9-1
Stand-alone mode tests 9-1
Stand-alone ACCH/DCCH selection 9-1
DCSM auto answer facilities 9-2
Performing tests using the DCSM in the directed mode 9-2
Monitoring functions 9-2
Posting the DCSM 9-4
Control Channel tests 9-4
MTX CTT tests 9-9
ICRM tests 10-1
DRU tests 11-1
Introduction 11-1
Functionality of the DRU 11-3

xContents Nortel Networks Confidential
411-2051-500 Draft 00.01 November 1999
Audio sensitivity of the TRU 11-3
Test considerations 11-4
Test equipment required 11-5
TRU self test 11-5
DRU configurations for analog tests 11-6
Nominal Application Gain 11-6
TRU setup 11-7
DRU transmit tests 11-12
Service impacts 11-12
Transmit test setup procedure 11-12
Transmit Carrier Frequency test 11-15
Wideband Modulation test 11-15
SAT Frequency and Deviation tests 11-16
Residual Modulation test 11-17
Transmit Audio Level test 11-17
Modulation Limiting test 11-18
1 kHz Tone Generation test 11-20
Setting TX audio deviation to site operational level 11-21
DRU receive tests 11-22
Service impacts 11-22
Receive test setup procedure 11-22
Receive sensitivity test 11-25
Receive and transmit audio line sensitivity test 11-25
Receive audio level test 11-26
RSSI test 11-27
RSSI offset calibration 11-29
SAT detect test 11-35
ST detect test 11-36
Setting RX audio level to site operational level 11-37
Transmit RF output power test 11-38
Transmit RF output power test setup procedure 11-38
Requirements on the Transmit RF output power test 11-40
Transmit RF output power test 11-41
Setting TRU power step size and Max power to site operational level 11-42
DRU digital tests 11-43
Digital test considerations 11-43
Bit error rate test at the MTX switch 11-44
Bit error rate test at the cell site 11-46
TDMA modulation accuracy test 11-49
TDMA call test 11-52
Enclosure maintenance 12-1
Field Replaceable Unit (FRU) 12-1
General precautions 12-4
RF radiation hazard 12-4
Electrostatic Discharge (ESD) control 12-4
Cable/connector identification 12-4
Replacing faulty common equipment (CE) units 12-5
Replacing faulty radio frequency (RF) units 12-6
Replacing the TRU or MCPA shelf 12-7