Safran CORTEX CRT Quantum User Manual page 169

c- External Input to DQPSK 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
Figure 42: TM Chain : I/O Ports (HBW direct PCM, Differential Coding)
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© Safran Data Systems
COMMAND RANGING & TELEMETRY UNIT CORTEX
CRT QUANTUM USER'S MANUAL
(Option)
Q in I in
Channel and phase ambiguities are solved by the DQPSK/DOQPSK decoder. In DQPSK
mode, output data must be interleaved for complete ambiguity solving.
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.
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It cannot be duplicated or distributed without expressed written consent.
DQPSK,
DOQPSK
decoding
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 89