SAGEM-LINK F 288055571-04
Installation and Operation Manual
Page 43/142
Issue 04 : July 2005
Reproduction and communication prohibited without the written permission of Sagem Communication
2.9 - BER Measurement
This test is to be done from one side of the link with all tributaries linked with a daisy chain
arrangement as described in Figure 2.5 and Figure 2.6.
In case of a problem due to an interferer, it should be necessary to measure the two directions
separately and to proceed to a frequency scan.
For a 1+1 system, as the verification of the different units have already been made, the quality test
shall be performed only with main channels (automatic mode).
A BER test using G821 parameters shall be performed for a duration depending on the network :
• 30 minutes for low capacity links (GSM, Wifi,…)
• 24 hours for medium and high capacity links
An other amount of time could be used for this test, but this will require Sagem approval.
Figure 2.5 : Link Quality Measurement
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