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MWU2000-X21, MWU2000-G703, MWU2000-V35
manual
048Mbps Wireless Modem
Models:
MWU2000-G703
MWU2000-X21
MWU2000-V35
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Troubleshooting
Specs
Antenna Characteristics
Install
Error codes
E1 Alarm Buffer
Error-Free Data Transfer
Total Link Delay
Front Panel Indicators
048Mbps Wireless Modem
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2.048Mbps Wireless Modem
TECHNICAL: 0118 931 2233
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Contents
Basingstoke Road, Reading, Berkshire RG2 0QN
0118 965
Sales 0118 965
048Mbps Wireless Modem
048Mbps Wireless Modem
Contents
Set-up and Configuration
Properly
General
About this Manual
Introduction
Product Description
2.048Mbps Wireless Modem
High Speed Communication
Error-Free Data Transfer
Seamless Communication
Versatility
Co-location
Choice of Antennas, Cables and RF Accessories
048Mbps Wireless Modem Benefits
048Mbps Wireless Modem Components
RS530
Line Interface Unit
Adaptive Equalization
Fractional E1 with Echo Cancellation
Fractional T1 With Echo Cancellation
Modem Separate DSP Transmit and Receive Modems
Antennas
Radio
General
Front Panel Indicators
Line
Rx Sync
RXD and TXD
TX Sync
048Mbps Wireless Modem Connections E1 or Fractional E1 LIU
048Mbps Wireless Modem Connectors
Installing the 2.048Mbps Wireless Modem General
Installation Antennas and Accessories
Package Components
To Set the Clock Rate V.35/RS-530/X.21 only
To Configure the Unit as Master
To Configure Channels with Echo Cancellation- Fractional E1
To Configure Channels Fractional E1
To Configure Channels- Fractional T1
To Configure Channels with Echo Cancellation- Fractional T1
Basic Antenna Uni-8.5
Antennas, Cables and Accessories
Medium Gain 12dBi Antenna Uni-12
Basic 8.5 dBi Antenna Showing Installation screws
Medium Gain 18dBi Antenna Uni-18
Medium Gain 12dBi Antenna
High Gain Antenna Uni-24
Medium Gain 18dBi Antenna
High Gain 24dBi antenna
Antenna Characteristics
RF Accessories
TPA 24 Transmit Power Amplifier
TPA 24 Connections Diagram
Installing the TPA
Achievable improvement through the use of LNA-10
LNA-10 Low Noise Receive Amplifier
LNA Improvement table
Installing the AL-1 Lightning Arrestor
LNA-10 Cable Connection Diagram
Low Loss Cable
Cable Types
Thin Cable
Thick Cable
11. Wall Mount with Azimuth Alignment Only
Antenna Sets
12. Wall Mount with Azimuth and Elevation Alignment
European Range Table USA Range Table
Range Tables
Maximum Unregulated Range Table
Antenna Alignment
Visually Aligning the antennas
Activating the front panel LEDs
To activate the front panel LEDs
14. Rssi measurement connection diagram
15. Rssi test point accuracy
048Mbps Wireless Modem
Synchronizing Co-located Modem Units
18. Default position NC of the Jumpers in the Receive Module
Setting the relevant parameters
Installing the Antennas
Maximum Number Synchronized Links
21. Connecting Units for Synchronization
Connecting the Master units
Main Menu
Set-up and Configuration
Set-up and Configuration Functions
Accessing the Set-up and Configuration Functions
Parameters Menu
Mode and Access Control Menu
Counters and Tracers Menu
To make selections using the Parameters menu
System Reset
Testing
To access the Parameters Menu
E1 Parameters Menu
LIU Parameters Menu
E1 Parameters Menu Items and Actions
Fractional EI Parameters Manu
E1 Alarm Buffer
Fractional E1 parameters Menu Items and Actions
Remote Alarm Method
CRC4 Usage
Echo Canceller disabling method
Fractional E1 Alarm Buffer
Long haul/Short haul
Pulse Shape
T1 Alarm Buffer
T1 Parameters Menu
T1 Parameters Menu Items and Actions
Fractional T1 Parameters Menu
048Mbps Wireless Modem
048Mbps Wireless Modem
Superframe Method
D4 Yellow Alarm Method
Pulse Density Enforcer
Echo Canceler
CRC6 Usage
Bit 7 Zero Suppression
Fractional T1 Alarm buffer
V.35/RS-530/X.21 Parameters Menu Items and Actions
35/RS530/X.21 Parameter Menu
DCE/DTE Functionality Options
Clock Polarity
Loopback Mode Menu Loopback Mode Menu Items and Actions
Line Interface Unit Type Menu
MCP Parameters Menu
Line Interface Unit Type Menu Options
MCP Parameters Menu Options
Total Link Delay
Master-Slave
Modem Initialisation String
Central Site Management Using a Dial-up Modem
AT&f\n
Modem Rate
11. Default Modem Rate According to Selected LIU Data Rat
Radio and Modem Parameters Menu
10. Radio and Modem Parameters Menu Options
Hoping Sequence
Remote Parameters
Add/Remove Channels from Test Sequence
Switch to Local Monitor
Switch to Remote Monitor
12. Remote Parameters Menu Options
Copy database and download to remote unit
Load Default Values Menu
Ping Remote Unit
Download remote database to remote unit
Parameter Info. Screen
13. Load Default Values Menu options
To make selections from the Counters and Tracers Menu
To access the Counters and Tracers Menu
System Counters
2.048Mbps Wireless Modems Counter display
14. Buffers Name and Description
15. Modem Rate Vs. Buffer Size
Channel Tracer Rssi per channel
16. Rssi Levels
Channel Tracer Errors Per Channel
Time Tracer Max Consecutive Errors versus Time
Time Tracer Errors versus Time
Clear System Counters and Channel Tracer
17. Delay Setting
Set Time Tracer Resolution
⇒ To set the time intervals
Clear Reset Counter
Reset Counters
Correction
Watch Alarms
Message
Description
Remote Frame Alarm
Message Rlos framer un-synchronized
Radio Alarms
Message Warning LIU Clock drift, Check clock configuration
General Alarms
Message Warning Difference in parameters between two units
Site Survey Mode
Change Access Rights
Menu
System Reset Menu
Introduction
Troubleshooting
⇒ To check radio link performance
Problem 2 Poor performance of radio link
⇒ To check the configuration of each unit
⇒ To check RF Installation
⇒ To check each unit configuration
To correct the configuration
To check synchronization at radio level
From the Parameters menu, select Parameters Info. Screen
048Mbps Wireless Modem
To reduce echo on voice channels
To view isolated bursts of errors
To improve data rate
Problem 7 The system resets with an error message
048Mbps Wireless Modem
Error Messages Source
If Faxes does not work properly
If the telephones does not work properly
048Mbps Wireless Modem
Transmission Technique
Technical Specifications
Wireless Modem Technical Specifications Models
Radio Type
System Bandwidth
Default Modem Rate According to Selected LIU Data Rate
Transmitter Output Power
Channel Bandwidth
Receiver Sensitivity
Maximum Spurious Level
Receiver Sensitivity as a Function of the Radio BER
Recommended Receive Level
Maximum Receive Level
Adjacent Channel Rejection
Separate between TX and RX frequencies
Adjacent Channel Rejection
Maximum Number of Synchronized Links
Maximum Number of Links to Synchronize
Filter Curves
101
Line Interface Specifications
RS-530 Interface
Fractional T1 Interface
Fractional E1 Interface
Interface
Connectors
Front Panel LED Indicators
103
Environmental Specifications
Mechanical Specifications
Standards
Antennas Sets
TPA 24 Technical Specifications
LNA-10 Technical Specifications
105
106
AL-1 Technical Specifications
107
Appendix a V.35/RS-530/X.21 Applications
DCE/DTE Configuration
Configuration Options
Table A-1. Possible DTE/DCE Configurations
Synchronizing your Modem to Another Network
048Mbps Wireless Modem Standard Configuration
Table A-2. Configuration
109
RS-530/V.35/X.21 Back-to-Back Configuration
Connecting your 2.048Mbps Wireless Modem to another modem
DCE Options
111
To set the DCE/DTE mode
Setting the DCE/DTE Mode Parameter
DTE Options
113
Appendix B E1 / T1 Applications
E1/T1 Connections and Common Problems Link Setup
115
E1/T1 LIU Jumper Settings
Table B- 1. E1/T1 Connections
Figure B-2. E1/T1 Board Location
To access the jumpers
117
Figure B-3. E1 Unbalanced Coax connector, 75 W
Figure B-6. T1/DSU Network Interface
T1 CSU/DSU Applications
119
E1/T1 Back-to-Back Configuration
Appendix C Fractional E1/T1 Applications
When to Use the Fractional E1/T1 LIU
121
Table C-1. Channels Characteristic
Table C-2. Fractional E1/T1 Connections
Fractional E1 LIU Jumper Settings
Figure C-2. Fractional E1 Board Location
123
Figure C-3. Fractional E1 Unbalanced Coax connector, 75 W
Fractional T1 CSU/DSU Applications
125
Echo Cancellation in Fractional E1/T1 Applications
Fractional E1/T1 Back-to-Back Configuration
127
Potential Problems in Fractional E1/T1 Applications
To separate DC input
Appendix D Installing Other Types of Receive Amplifiers
To supply DC input through the RF cable
129
Table E-1. E1/T1 and Fractional E1/T1 Pin Connections
LIU RS-530 Connector Pin Assignments
Appendix E Pin Assignments
E1/T1 and Fractional E1/T1 Pin Connections
LIU D-25 to V.35 Cable Pin Assignments
131
Figure E-3. LIU D-25 to X.21 Cable Pin Assignments
LIU D-25 to X.21 Cable Pin Assignments
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