Ambiguities Solving, I/O Ports & By-Passing Capabilities; Low Bandwidth Tmu - Safran CORTEX CRT Quantum User Manual

Ambiguities Solving, I/O Ports & By-passing Capabilities
3.3.7.

: SPS software task
: Performed by hardware, firmware and/or software


3.3.7.1. Low Bandwidth TMU

IF inputs
PM, FM
Aux. inputs
demodulator

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.
© Safran Data Systems
COMMAND RANGING & TELEMETRY UNIT CORTEX
CRT QUANTUM USER'S MANUAL
Color code:
Connector label on the Interconnection Panel: italic characters.
BPSK sub-carrier
demodulator
Bit Synchronizer
Video
Figure 37: TM Chain : I/O Ports (LBW)
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Bi-Phase Viterbi
decoder decoder
(Option)
Safran Data Systems
.
Ref. DTU 100042
Is.Rev. 5.17
Date: Dec.
03, 2021Sept. 30, 2021
Differential Frame
decoder Synchronizer
Page 76