COMMAND RANGING & TELEMETRY UNIT CORTEX
CRT QUANTUM USER'S MANUAL
Ref. DTU 100042
Is.Rev. 5.17
Date: Dec.
03, 2021Sept. 30, 2021
This document is the property of Safran Data Systems.
It cannot be duplicated or distributed without expressed written consent.
4.2.7.9.3. HBW Telemetry Units (TMU)
To allocate a set of test points to a TMU:
Registry path: HKEY_LOCAL_MACHINE\SOFTWARE\In-snec\CortexCRT\SetDefault\Preferences\Tmux
(x = TM chain number)
Keyword: TPoutSet
Default setting at delivery: 0 (test points disabled)
Set the Byte 0 of keyword in the range 1 to 4 to select test points Set # 1 to Set # 4
Additional settings:
Byte 1 bit 0:
0 for Data Out Updated on Rising edge of Clk Out, Data In sampled on Falling edge of Clk In
1 for Data Out Updated on Falling edge of Clk Out, Data In sampled on Rising edge of Clk In
Byte 1 bit 2:
0 fo I/Q ambiguity not managed on test points
1 for enabling the automatic management of the I/Q ambiguity in QPSK modes
Byte 1 bit 3:
0 for LVTTL
1 for RS422
4.2.7.9.4. Video 1 & 2 Output Level Setting
To adjust the output level on the VIDEO 1 & 2 test points.
Registry path: HKEY_LOCAL_MACHINE\SOFTWARE\In-snec\CortexCRT\SetDefault\Preferences\Global
Keyword: VidOut1dcg2 and VidOut2dcg2
Default setting at delivery: 0 (test points disabled)
Each registry key is a bit field (bit 0 = LSB):
DC removal: Bit 0: 0 (no action) or 1 (remove DC)
Signal amplification:
Bits 4 to 7: Output gain shift value
Bits 8 to 15: Output gain mantissa value
From the output gain shift and mantissa values, the signal gain is computed as:
Signal level offset:
Bits 16 to 23: Video offset compensation in 2’s-complement format
Enter 10 exp(required offset in Volt)
Examples (for VIDEO 1 test point):
1. To activate DC suppression: VidOut1dcg2 = 0x000001
2. To add a +200 mV offset: VidOut1dcg2 = 0x020000
3. To add a –200 mV offset: VidOut1dcg2 = 0xFE0000
4. To apply a Gain = 1,4296875: VidOut1dcg2 = 0x00B710
5. To apply a Gain = 0.6875: VidOut1dcg2 = 0x00B000
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