3.3. IF Demodulation & Telemetry Processing
Demodulation Capability
3.3.1.
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)
Low Bandwidth
(LBW)
Low Bandwidth Extended
(LBW extended)
High Bandwidth
with sub-carrier demodulation
capability
(HBW with S/C)
High Bandwidth, direct PCM
(HBW, direct PCM)
(*): 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
© Safran Data Systems
COMMAND RANGING & TELEMETRY UNIT CORTEX
CRT QUANTUM USER'S MANUAL
IF Receiver Setting
(Annex 1, IFR Table, Offset 38)
Video mode
Video mode
Video mode
PCM mode
Table 18: Demodulation Capabilities
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It cannot be duplicated or distributed without expressed written consent.
Rate
(see next section)
SCF 128 kHz
BR 25 kbps
BR 25 kbps
SCF 512 kHz
BR 64 kbps
BR 64 kbps
If sub-carrier present:
SCF 2 MHz
BR 600 kbps
If no sub-carrier :
BR 5 Mbps (**)
If no sub-carrier :
BR 15 Mbps (**)
BR 20 Mbps (*)
BR 40 Mbps (*)
BR 20 Mbps (*)
BR 20 Mbps
on each rail (*)
Safran Data Systems
.
Ref.
DTU 100042
Is.Rev.
5.17
Date:
Dec.
03, 2021Sept. 30, 2021
Modulation
PCM/BPSK/PM
PCM/BPSK/FM
PCM/PM
PCM/FM
PCM/BPSK/PM
PCM/BPSK/FM
PCM/PM
PCM/FM
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)
PCM/PM
PCM/FM
PCM/PM
PCM/BPSK
PCM/FM
PCM/QPSK
PCM/OQPSK
SOQPSK, GMSK
PCM/AQPSK
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