User's Manual
Table Of Contents
- 1.0 INTRODUCTION
- 2.0 MODEL NUMBER CODES
- 3.0 HARDWARE INSTALLATION AND BASIC INTERFACE REQUIREMENTS
- 4.0 INITIAL STARTUP AND CONFIGURATION
- 4.1 Introduction
- 4.2 STEP 1—Power up the LEDR Radios
- 4.3 STEP 2—Establish Communications with the Radio
- 4.4 STEP 3—Make Initial Login to Radio
- 4.5 STEP 4—Change the SUPER Password
- 4.6 STEP 5—Review Essential Operating Parameters
- 4.7 STEP 6—Set TCP/IP Settings to Enable SNMP and/or Telnet Management (if required)
- 4.8 STEP 7—Set User Configurable Fields
- 4.9 STEP 8—Verify Radio Performance
- 4.10 STEP 9—Install the Link
- 4.11 STEP 10—Verify the Link Performance
- 5.0 CONFIGURATION AND CONTROL VIA THE FRONT PANEL
- 6.0 CONFIGURATIONAND CONTROL VIA THE CONSOLE PORT
- 7.0 STANDARDIZING RADIO CONFIGURATIONS
- 8.0 UPGRADING LEDR FIRMWARE
- 9.0 USING ORDERWIRE
- 10.0 USING THE SERVICE CHANNEL
- 11.0 PROTECTED CONFIGURATION
- 12.0 SPACE DIVERSITY OPERATION
- 13.0 SPARE PARTS, UNITS AND ACCESSORIES
- 14.0 Fractional-T1 INTERFACE CARD 03-3846A01 Fractional-E1 INTERFACE CARD 03-3846A02
- 15.0 INCREASE BANDWIDTH BY CHANGING TRANSMITTER AND RECEIVER FILTERS
- 16.0 BENCH TESTING OF RADIOS
- 17.0 TECHNICAL REFERENCE
- 17.1 Specifications— Models: LEDR 400S, 700S, 900S and1400S
- 17.2 Specifications— Models: LEDR 400F, 900F, 1400F
- 17.3 Specifications— Protected Switch Chassis
- 17.4 Optional Equipment (Consult factory for detailed information)
- 17.5 Accessories
- 17.6 I/O Connector Pinout Information
- 17.7 Watts-dBm-Volts Conversion
- 18.0 RADIO EVENT CODES
- 19.0 IN CASE OF DIFFICULTY
MDS 05-3627A01, Rev. D LEDR Series I/O Guide 23
Protected Configuration Connections
There are several connections between the LEDR radio chassis and the
Protected Switch Chassis. They include the primary data interface, RF,
Ethernet, orderwire and Service Channel. Details on cabling and other
items relating to the protected (redundant) configuration appear in PRO-
TECTED CONFIGURATION on Page 103.
3.7 Bandwidths, Data Rates and Modulation Types
The hardware in the LEDR chassis is configured at the factory for a spe-
cific bandwidth. However, the modulation type and data rate can be
changed as long as the bandwidth is sufficient to support the modulation
type and data rate. (If you need to change your radio’s bandwidth,
please see “INCREASE BANDWIDTH BY CHANGING TRANS-
MITTER AND RECEIVER FILTERS” on Page 120 for details.)
Use of the
modem command (Page 71) and configuration ([argument])
code automatically sets the combination of data rate, bandwidth and
modulation type if the radio is capable of supporting it
Table 10 shows the combinations of radio bandwidth, data rates and
modulation types that are available for subrate radios at the time of pub-
lication. Table 11 shows the combinations available for fullrate radios.
Table 10. Subrate Bandwidth vs. Modem Selection Code
Radio
Bandwidth
Configuratio
n Code
Data Rate(s)
Modulation
25 kHz B1 64 kbps 16-QAM
C1 64 kbps 32-QAM
50 kHz A1 64 kbps QPSK
B2 128 kbps 16-QAM
100 kHz A1 64 kbps QPSK
A2 128 kbps QPSK
B3 256 kbps 16-QAM
200 kHz A1 64 kbps QPSK
A2 128 kbps QPSK
B3 256 kbps 16-QAM
B4 384 kbps 16-QAM
B5 512 kbps 16-QAM
C6 768 kbps 32-QAM