Introduction - SAF CFM-LM Series Technical Description

C F M - L M
P R O D U C T
T E C H N I C A L D E S C R I P T I O N

Introduction

Proprietary notice
The specifications or information contained in this document are subject to change without notice
due to continuing design improvement. If there is any conflict between this document and
compliance statements, the latter will supersede this document.
The CFM LM series digital microwave radio system is equipment designed for the transmission of
digital signals using radio waves in conditions within the line of sight. The type "LM" denotes the
model of the Radio Unit (or Outdoor Unit – ODU). There are LM and L4 type ODUs that work
with LM and L4 type Indoor Units correspondingly (Indoor Unit – IDU). This particular
document describes the LM series microwave radio system which includes LM ODU and IDUs
that work with the LM ODU.
The following LM type ODUs are available:
CFM-38-LM, operates in 38 GHz band, WAN data rates: 8, 16, 34 Mbps; the CFM-38-LM
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meets the requirements of ETSI EN 300 197 standard;
CFM-26-LM, operates in 26 GHz band, WAN data rates: 8, 16, 34 Mbps; the CFM-26-LM
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meets the requirements of ETSI EN 300 431 standard;
CFM-22-LM, operates in 23 GHz band, WAN data rates: 8, 16, 34 Mbps; the CFM-22-LM
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radio meets the requirements of ETSI EN 300 198 standard;
CFM-18-LM, operates in 18 GHz band, WAN data rates: 8, 16, 34 Mbps; the CFM-18-LM
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meets the requirements of ETSI EN 301 128 standard;
CFM-15-LM, operates in 15 GHz band, WAN data rates: 8, 16, 34 Mbps; the CFM-15-LM
−
meets the requirements of ETSI EN 301 128 standard;
CFM-13-LM, operates in 13 GHz band, WAN data rates: 8, 16, 34 Mbps; the CFM-13-LM
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meets the requirements of ETSI EN 301 128 standard;
CFM-8-LM, operates in 8 GHz band, WAN data rates: 8, 16, 34 Mbps; the CFM-8-LM meets
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the requirements of ETSI EN 301 216 standard;
CFM-7-LM, operates in 7 GHz band, WAN data rates: 8, 16, 34 Mbps; the CFM-7-LM meets
−
the requirements of ETSI EN 301 216 standard.
Depending on the type of IDU, the WAN data rate is 8, 16 or 34 Mbps.
The CFM terminal consists of the Indoor Unit, typically mounted indoors, the Outdoor Unit,
which is located outdoors and the antenna. The Radio Unit is typically located close by or directly
attached to the antenna. The Indoor Unit and the Radio Unit are connected with a single coaxial
cable, a sufficiently long cable can be used (for example, up to 100 m long RG-213, or up to 300 m
long LMR-400 cable).
In order to implement a communication link, the CFM terminal must be positioned in both points
to be linked.
The radio relay system has a simple and effective design ensuring low price and high reliability of
the device. These features result also in a compactness and low power consumption.
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