Dqpsk, Doqpsk, Dsoqpsk And Gmsk Code; If Receiver Locking Threshold; I/Q Swap Inverted (Nt Compatibility); Pll Order - Safran CORTEX CRT Quantum User Manual

4.2.7.2.3. DQPSK, DOQPSK, DSOQPSK and GMSK Code

Polynomial code for DQPSK:
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, DSOQPSK, Differential GMSK:
Registry path:
Keyword:
Default setting at delivery:
The two MS Bytes are used for I polynomial value and the two LS bytes for Q polynomial value.

4.2.7.2.4. IF Receiver Locking Threshold

To change the IFR locking threshold:
Registry path:
Keyword:
Default setting at delivery (Cortex CRT XL Quantum): 970 (decimal)
Default setting at delivery (CRT eXplorer): 1300 (decimal)
Enter the locking threshold in 0.1 dBm step. Example: 970 = -97 dBm).

4.2.7.2.5. I/Q Swap Inverted (NT Compatibility)

Inverts the IF spectrum and allows the I and Q output to be identical to the Cortex NT (inverted compared to the
Cortex XL).
Registry path:
Keyword:
Default setting at delivery:
Enter 0 for non-inverted spectrum and I/Q swap (XL mode), 1 for inverted spectrum and I/Q swap (NT
compatibility).

4.2.7.2.6. PLL Order

Allows the IFR to use 2nd or 3rd Order PLL (CRT eXplorer only)
Registry path:
Keyword:
Default setting at delivery:
Enter 0 for 2nd Order or 1 for 3rd Order PLL
© Safran Data Systems
COMMAND RANGING & TELEMETRY UNIT CORTEX
CRT QUANTUM USER'S MANUAL
HKEY_LOCAL_MACHINE\SOFTWARE\In-snec\CortexCRT\SetDefault\Preferences\Ifrx
(x=1 to 5)
DQPSKcode
0xC5A3AC35
HKEY_LOCAL_MACHINE\SOFTWARE\In-snec\CortexCRT\SetDefault\Preferences\Ifrx
(x=1 to 5)
DOQPSKcode
0x3C3C9999
HKEY_LOCAL_MACHINE\SOFTWARE\In-snec\CortexCRT\SetDefault\Preferences\Ifrx
(x=1 to 5)
IFThreshPM
HKEY_LOCAL_MACHINE\SOFTWARE\In-snec\CortexCRT\SetDefault\Preferences\Ifrx
(x=1 to 5)
SwapInvert
0
HKEY_LOCAL_MACHINE\SOFTWARE\In-snec\CortexCRT\SetDefault\Preferences\Ifrx
(x=1 to 5)
PllOrder
0
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 240