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4.2.7.4. IF Modulation
4.2.7.4.1. RZ Protocol
To modify the RZ flag (carrier sweeping function on the IF Modulator, Return to Zero protocol):
Registry path:
Keyword:
Default setting at delivery:
Enter enter:
4.2.7.4.2. DQPSK, DOQPSK Code
Polynomial code for DQPSK encoding:
Registry path:
Keyword:
Default setting at delivery:
The 2 MSB byte are used to I polynomial value and 2 LSB byte are used to Q polynomial value.
Polynomial code for DOQPSK encoding:
Registry path:
Keyword:
Default setting at delivery:
The 2 MSB byte are used to I polynomial value and 2 LSB byte are used to Q polynomial value.
4.2.7.4.3. IF Uplink Spectrum Inversion
To invert the IF output spectrum:
Registry path:
Keyword:
Default setting at delivery:
Enter 0 (non-inverted spectrum) or 1 (inverted spectrum)
4.2.7.4.4. Swap G1 and G2 after Viterbi Encoding
To swap G1 and G2 after Viterbi encoder.
Registry path:
Keyword:
Default setting at delivery:
Set the keyword to 1 to swap G1 and G2.
© Safran Data Systems
COMMAND RANGING & TELEMETRY UNIT CORTEX
CRT QUANTUM USER'S MANUAL
HKEY_LOCAL_MACHINE\SOFTWARE\In-snec\CortexCRT\SetDefault\Preferences\Ifmx
(x = A or B)
RzSweepMode
0 (standard RZ protocol)
0 - standard RZ protocol
1 - RZ from a positive frequency slope only
2 - RZ from a negative frequency slope only
0x100 – Disable modulation during sweeping process
HKEY_LOCAL_MACHINE\SOFTWARE\In-snec\CortexCRT\SetDefault\Preferences\Ifmx
(x = A or B)
DQPSKcode
0xA3C5CA53
HKEY_LOCAL_MACHINE\SOFTWARE\In-snec\CortexCRT\SetDefault\Preferences\Ifmx
(x = A or B)
DOQPSKcode
0x69693C3C
HKEY_LOCAL_MACHINE\SOFTWARE\In-snec\CortexCRT\SetDefault\Preferences\Ifmx
(x = A or B)
SpectInvert
0 (non-inverted spectrum)
HKEY_LOCAL_MACHINE\SOFTWARE\In-snec\CortexCRT\SetDefault\Preferences\Ifmx
(x = A or B)
SwapG1G2
0 (G1 before G2)
This document is the property of
It cannot be duplicated or distributed without expressed written consent.
Safran Data Systems
.
Ref.
DTU 100042
Is.Rev.
5.17
Date:
Dec.
03, 2021Sept. 30, 2021
Page 244
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