Safran CORTEX CRT Quantum - Ambiguities Solving, I;O Ports & By-Passing Capabilities; Low Bandwidth TMU

COMMAND RANGING & TELEMETRY UNIT CORTEX
CRT QUANTUM USER'S MANUAL
Ref. DTU 100042
Is.Rev. 5.17
Date: Dec.
03, 2021Sept. 30, 2021
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Page 76
3.3.7. Ambiguities Solving, I/O Ports & By-passing Capabilities
 Color code:
: SPS software task
: Performed by hardware, firmware and/or software
 Connector label on the Interconnection Panel: italic characters.
3.3.7.1. Low Bandwidth TMU
Viterbi
decoder
Differential
decoder
Frame
Synchronizer
Bi-Phase
decoder
(Option)
BPSK sub-carrier
demodulator
Bit Synchronizer
PM, FM
demodulator
IF inputs
Aux. inputs
Video
Figure 37: TM Chain : I/O Ports (LBW)
 Phase ambiguity solving is by the Frame Synchronizer or by the differential decoder (if PCM code is
NRZ-M or NRZ-S).
 External input to the Frame Synchronizer and Viterbi decoder: not available.
 Data and Clock output: not available.
 Auxiliary inputs: restricted to noise & spurious-free signal with limited amplitude variations
 Direct input to PSK Demodulator: set the IF Receiver to « By-pass » mode and select Auxiliary port # 1
or # 2
 Direct input to the Bit Synchronizer: set the IF Receiver to « By-pass » mode and the SCF to 0 on the
Telemetry Unit. Select Auxiliary port # 1 or # 2. The signal is expected to have no DC offset at the
AUXILIARY input.