User's Manual

MDS 05-3627A01, Rev. D LEDR Series I/O Guide 1
1.0 INTRODUCTION
This manual is intended to help an experienced technician install, con-
figure, and operate one of the digital radios in the MDS LEDR Series:
400S/F, 700S, 900S/F or 1400S/F. The manual begins with an overall
description of product features and is followed by the steps required to
install the radio and place it into normal operation.
After installation, we suggest keeping this guide near the radio for future
reference.
1.1 Product Description
The LEDR radio (Figure 1) is a full-duplex, point-to-point digital radio
operating in one of three radio frequency bands and at several band-
widths as summarized in Table 1.
With the addition of an optional Fractional-T1 Interface card, a
LEDR 700S or 900S Series radio can be connected to industry-standard
G.703 T1 data interface equipment. See Page 115 for a complete
description of the Fractional-T1, Fractional-E1 and Full Rate E1
options.
All LEDR Series radios (with the exception of the 700S) are available
in a protected “1+1” configuration. The protected configuration consists
of two identical LEDR radios and a Protected Switch Chassis (Figure 2).
The protected configuration performs automatic switchover to a sec-
ondary radio in the event of a failure in the primary unit. See PRO-
TECTED CONFIGURATION on Page 103 for detailed information on
this mode.
Table 1. Key LEDR Radio Characteristics
MODEL(S) BANDWIDTH(S) FREQ. RANGE INTERFACE
LEDR 400S 25/50/100/200 kHz 330-512 MHz FE1
FT1
EIA-530
LEDR 400F 0.5/1/2 MHz 330-512 MHz E1/G.703
LEDR 700S 25/50/100/200 kHz 746-794 MHz EIA-530
LEDR 900S 25/50/100/200 kHz 800-960 MHz FE1
FT1
EIA-530
LEDR 900F 0.5/1/2 MHz 800–960 MHz E1/G.703
LEDR 1400S 25/50/100/200 kHz 1350–1535 MHz FE1
FT1
EIA-530
LEDR 1400F 0.5/1/2 MHz 1350–1535 MHz E1/G.703