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4.2.7.2. IF Reception
4.2.7.2.1. Non-coherent / Coherent AGC
To program the AGC test points voltage in non-coherent or coherent mode:
Registry path:
Keyword:
Default setting at delivery:
The 12 least significant bits (bit 0 = LSB) of the registry key are used to program the AGC test points:
Bits 0-3: Non-coherent vs Coherent
-
0: AGC voltage corresponding to the signal energy in a 10 MHz bandwidth (non-coherent mode)
-
1: AGC voltage corresponding to the IF carrier level (coherent mode)
Bits 4-7: AGC test point # 1. Not significant if bit 0 = 0
0: IF carrier level measured by IF Receiver # 1
-
1: IF carrier level measured by IF Receiver # 2
-
2: IF carrier level measured by IF Receiver # 3
-
3: IF carrier level measured by IF Receiver # 4
-
-
4: IF carrier level measured by IF Receiver # 5
6: Unused
-
-
E: IF carrier level measured by DCU # 2
-
F: IF carrier level measured by DCU # 1
Bit 8-11: AGC test point # 2: as per bits 4 to 7
Bit 12-15: AGC test point # 3: as per bits 4 to 7
Examples: enter 0 for the AGC test points in non-coherent mode. Enter 65D or 101H for the AGC test points in
coherent mode (IFR # 1 on AGC # 1 and IFR # 2 on AGC # 2).
The origin of the AGC information is as follows:
IFR: signal level received by the corresponding IFR
DCU, post-detection: signal received on the best channel if DCU in Video mode, not significant if DCU
in PCM mode
DCU, pre-detection: not significant
© Safran Data Systems
COMMAND RANGING & TELEMETRY UNIT CORTEX
CRT QUANTUM USER'S MANUAL
HKEY_LOCAL_MACHINE\SOFTWARE\In-snec\CortexCRT\SetDefault\Preferences\Global
CAGcoherente
0 (non-coherent AGC)
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 238
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