Safran CORTEX CRT Quantum User Manual page 161

c- External Input to Viterbi Decoder (TMU table/offset 26 = 2. GUI: Frame Sync. Input = Ext. Vit.
1):
PCM/PM,
IF inputs
BPSK,
QPSK,
Aux. inputs
OQPSK
demodulator
& B/S

Data routing for BPSK and PCM/PM demodulation is on I channel.

Phase and channel ambiguity solving is by the Frame Synchronizer if differential encoding is not
used. In BPSK and PCM/PM mode, phase ambiguity solving is by the differential decoder (if
differential encoding is used).

Test points and external input to the Frame Synchronizer or Viterbi Decoder are available if one of
the downlink data I/Os Test Sets is enabled. See section 2.3.4.2, Annex 5 and TMU monitoring
table, status offset 26 for more details.

Auxiliary inputs: restricted to noise & spurious-free signal with limited amplitude variations.

Direct input to the Bit Synchronizer: Not available.
© Safran Data Systems
COMMAND RANGING & TELEMETRY UNIT CORTEX
CRT QUANTUM USER'S MANUAL
I
BP, DM-M
decoder
Figure 39: M Chain : I/O Ports (HBW direct PCM)
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It cannot be duplicated or distributed without expressed written consent.
(Option)
Q in I in
Differential
decoder
Differential
encoder
Safran Data Systems
.
Ref. DTU 100042
Is.Rev. 5.17
Date: Dec.
03, 2021Sept. 30, 2021
Frame
Synchronizer
Differential
encoder
Invert/
swap
Interleaving
I out Q out
(Option)
Page 81