SAGEM-LINK F 288055571-04
Installation and Operation Manual
Page 106/142
Issue 04 : July 2005
Reproduction and communication prohibited without the written permission of Sagem Communication
Chapter 5
System Description
5.1 - Overview
SAGEM-LINK F is a digital radio relay system designed to meet the needs of a continuously evolving
networks market and guarantees quality and reliability for short and medium distance point to point
links.
SAGEM-LINK F is available in unprotected 1+0 configuration or in protected 1+1 configuration (Mute
Hot Standby, Space Diversity, Frequency Diversity).
• Major telecommunication bands are covered : 7, 8, 13, 15, 18, 23, 26 and 38 GHz
• Traffic : 2
E1, 4 E1, 8 E1, 16 E1, Ethernet 100 baseT
• Modulation : QPSK, 16QAM (8
E1 and 16 E1)
• Integrated BER and receive signal level measurement
• Wide transmit power range in steps of 1 dB
• Automatic Transmit Power Control (ATPC)
• Synthesizer Frequency Step : 250 kHz
• Full software control
• Full compliance with ETSI standards
In addition some additional features are included :
• 3 auxiliary data channels
• 4 Input / Output dry loops
• 1 engineering order wire
• SNMP interface with 10 baseT integrated hub, and two serial ports
5.2 – System Composition
SAGEM-LINK F unprotected and protected configurations are obtained by using the same basic system
components :
• IDU including the user interfaces, microprocessor, multiplexer and demultiplexer.
• Cable Interface Module including DC power supply, modem and ODU cable interface
• ODU including IDU cable interface and RF circuits (synthesizers, transmitter, receiver).
A 1+0 terminal using an integrated antenna is presented on Figure 5.1, and a 1+1 hot standby terminal using a
coupler and an integrated antenna is presented on Figure 5.2.
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