Safran CORTEX CRT Quantum - If Demodulation & Telemetry Processing; Demodulation Capability; Low & High Bandwidth TMU; Table 18: Demodulation Capabilities

COMMAND RANGING & TELEMETRY UNIT CORTEX
CRT QUANTUM USER'S MANUAL
Ref. DTU 100042
Is.Rev. 5.17
Date: Dec.
03, 2021Sept. 30, 2021
© Safran Data Systems
This document is the property of Safran Data Systems.
It cannot be duplicated or distributed without expressed written consent.
Page 22
3.3. IF Demodulation & Telemetry Processing
3.3.1. Demodulation Capability
3.3.1.1. Low & High Bandwidth TMU
Next table summarizes the maximum bit rate and sub-carrier frequency supported by the TMU in Low and High
bandwidth modes:
Telemetry Unit Setting
(Annex 1, TMU Table , Offset 58)
IF Receiver Setting
(Annex 1, IFR Table, Offset 38)
Rate
(see next section)
Modulation
Low Bandwidth
(LBW)
Video mode
SCF  128 kHz
BR  25 kbps
PCM/BPSK/PM
PCM/BPSK/FM
BR  25 kbps
PCM/PM
PCM/FM
Low Bandwidth Extended
(LBW extended)
Video mode
SCF  512 kHz
BR  64 kbps
PCM/BPSK/PM
PCM/BPSK/FM
BR  64 kbps
PCM/PM
PCM/FM
High Bandwidth
with sub-carrier demodulation
capability
(HBW with S/C)
Video mode
If sub-carrier present:
SCF  2 MHz
BR  600 kbps
PCM/BPSK/PM
PCM/BPSK/FM
PCM/PM/PM
PCM/PM/FM
PCM/FM/PM
(if PCM/FM option)
PCM/FM/FM
(if PCM/FM option)
If no sub-carrier :
BR  5 Mbps (**)
PCM/PM
If no sub-carrier :
BR  15 Mbps (**)
PCM/FM
High Bandwidth, direct PCM
(HBW, direct PCM)
PCM mode
BR  20 Mbps (*)
PCM/PM
PCM/BPSK
PCM/FM
BR  40 Mbps (*)
PCM/QPSK
BR  20 Mbps (*)
PCM/OQPSK
SOQPSK, GMSK
BR  20 Mbps
on each rail (*)
PCM/AQPSK
Table 18: Demodulation Capabilities
(*): Maximum bit rates. May be less according to Cortex configuration (see next table for bit rate and symbol rate
limitations on high bandwidth telemetry chains without sub-carrier).
(**): NRZ codes, PM/PCM BIP < 2.5 Mbps, FM/PCM BIP < 1 Mbps