Safran RTR-NeXt User Interface Manual page 113

4.7.9.4 PCM-FM Trellis (MS-FM).
Compare to the legacy FM demodulator, The MS-FM demodulator improves the bit error rate by 2.5
dB. Remember than the acquisition time of MS-FM demodulator is longer than legacy FM demodulator.
In a disturbed channel, this has to be taken into account.
The schematics using MS-FM demodulator is:
So in this configuration, in the receiver, there are two demodulators connected to the same input :

One legacy PCM FM demodulator

One MS-FM demodulator
In the MS-FM demodulator, the demodulator and the bit synchronizer are performed in the same
function, hence no video output is available at the MS-FM demodulator output.

Bit Rate (NRZ code) (Max Value 29.5Mbps)
© Safran Data Systems – IMP000074 e14r1
Radio Telemetry Receiver
Graphical User Interface Manual
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Ref. D130486
Is.Rev 03
Customer Ref.: -
Date: 21/06/2021
Safran Data Systems
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Page 113