1+1 Frequency Diversity - Sagem -LINK F Installation And Operation Manual

SAGEM-LINK F
Installation and Operation Manual
Cable
Interface
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(Main)
IDU
Cable
Interface
Module
Standby
The 1+1 Space Diversity is a 1+1 Mute hot standby system, without coupler and with a second
antenna.
One couple of frequencies is involved, one of the two transmitter is in mute position.
This system is mainly used in case of propagation problem (long hop multiple paths). The switching
criteria is the same compared to MHSB protection system. However, an optional criteria is available
for diversity configurations : receive signal level.(see Chapter 3, section 3.3.7.3).
5.7.3 – 1+1 Frequency Diversity
IDU
Figure 5.8 SAGEM-LINK F 1+1 FD Configuration (2 antennas per terminal)
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IDU
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Figure 5.9 SAGEM-LINK F 1+1 FD Configuration (1 dual polarized antenna)
In frequency diversity systems, two couples of frequency are used. There is no switching at the
transmit side, both transmitters are operating. There is only a protection switch for the receivers.
Reproduction and communication prohibited without the written permission of Sagem Communication
ODU
Main
ODU
Standby
Figure 5.7 SAGEM-LINK F 1+1 SD Configuration
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1
1
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2
2
ODU
1
V
1
H
ODU
2
2
ODU
Main
ODU
Standby
F1 / F'1
F2 / F'2
OR
ODU
1
Fa / F'a
V
H
Fb / F'b
ODU
2
288055571-04
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(Main)
IDU
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Interface
Module
Standby
Cable
ODU
Interface
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1
1
IDU
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ODU
Interface
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2
2
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1
IDU
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2
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Issue 04 : July 2005