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.
4.2.3.1. CTX Document Name Table ................................................................................................................................... 229
4.2.3.2. CTX Document Storage and Loading ...................................................................................................................... 229
4.2.4. Start-up Menu Selection by Remote Access Control (RAC) ....................................................................... 231
4.2.4.1. General ..................................................................................................................................................................... 231
4.2.4.2. Menu Selection at SPS Start-up ............................................................................................................................... 232
4.2.4.3. MCS Graphical User Interface ................................................................................................................................. 233
4.2.5. SPS Version Identification ......................................................................................................................... 234
4.2.5.1. Common Data .......................................................................................................................................................... 234
4.2.5.2. CORTEX CRT Quantum Specific Data ................................................................................................................... 235
4.2.6. CORTEX CRT Quantum File System Architecture .................................................................................... 235
4.2.7. SPS System Parameters Modification ........................................................................................................ 237
4.2.7.1. General Procedure for Changing a Registry Key ..................................................................................................... 237
4.2.7.2. IF Reception ............................................................................................................................................................. 238
4.2.7.2.1. Non-coherent / Coherent AGC ........................................................................................................................... 238
4.2.7.2.2. AGC Dynamic Voltage Scaling (SPS E5R25 and Higher) ................................................................................. 239
4.2.7.2.3. DQPSK, DOQPSK, DSOQPSK and GMSK Code ............................................................................................ 240
4.2.7.2.4. IF Receiver Locking Threshold .......................................................................................................................... 240
4.2.7.2.5. I/Q Swap Inverted (NT Compatibility) ............................................................................................................... 240
4.2.7.2.6. PLL Order .......................................................................................................................................................... 240
4.2.7.2.7. Video Signal Output (NT Compatibility) ........................................................................................................... 241
4.2.7.3. Telemetry Processing ............................................................................................................................................... 241
4.2.7.3.1. Telemetry Buffers in RAM ................................................................................................................................ 241
4.2.7.3.2. Telemetry Data Storage on the Disk ................................................................................................................... 241
4.2.7.3.3. Bit Synchronizer Mode....................................................................................................................................... 242
4.2.7.3.4. Removal of the R-S Codeblock and Synchronization Word .............................................................................. 242
4.2.7.3.5. Removal of the Synchronization Word for Frame Checking .............................................................................. 242
4.2.7.3.6. Removal of Dummy Frames for TM Storage ..................................................................................................... 242
4.2.7.3.7. Swap G1 and G2 before Viterbi Decoder ........................................................................................................... 243
4.2.7.3.8. Turbo Decoding Frame Synchronisation Word .................................................................................................. 243
4.2.7.4. IF Modulation .......................................................................................................................................................... 244
4.2.7.4.1. RZ Protocol ........................................................................................................................................................ 244
4.2.7.4.2. DQPSK, DOQPSK Code.................................................................................................................................... 244
4.2.7.4.3. IF Uplink Spectrum Inversion ............................................................................................................................ 244
4.2.7.4.4. Swap G1 and G2 after Viterbi Encoding ............................................................................................................ 244
4.2.7.5. Telecommanding ..................................................................................................................................................... 245
4.2.7.5.1. Transmission of the Un-modulated TC Sub-carrier ............................................................................................ 245
4.2.7.5.2. CMM Data Format ............................................................................................................................................. 245
4.2.7.5.3. “Group” Instruction Size .................................................................................................................................... 245
4.2.7.5.4. TC Watchdog ..................................................................................................................................................... 245
4.2.7.5.5. Extended Idle Patterns (1 to 255) ....................................................................................................................... 246
4.2.7.5.6. Extended Preamble Patterns (1 to 255)............................................................................................................... 246
4.2.7.5.7. Always Idle ........................................................................................................................................................ 246
4.2.7.5.8. Enable primary acknowledgement ..................................................................................................................... 246
4.2.7.6. Ranging .................................................................................................................................................................... 247
4.2.7.6.1. Ranging Sub-Carrier Modulation Index ............................................................................................................. 247
4.2.7.6.2. Range Data Storage ............................................................................................................................................ 247
4.2.7.6.3. Synchronized Doppler & Range Measurements ................................................................................................. 247
4.2.7.7. Logging Data Storage & Data Time-tagging ........................................................................................................... 248
4.2.7.7.1. Telemetry Time-Tagging .................................................................................................................................... 248
4.2.7.7.2. Logging Data Storage ......................................................................................................................................... 248
4.2.7.7.3. PC Clock Synchronization to IRIG Time ........................................................................................................... 249
4.2.7.7.4. Change Time-tag Format .................................................................................................................................... 250
4.2.7.8. Telemetry Simulation ............................................................................................................................................... 250
4.2.7.8.1. Access to Simulated TM Files ............................................................................................................................ 250
4.2.7.8.2. Swap G1 and G2 after Viterbi Encoding ............................................................................................................ 250
4.2.7.9. Test Points Allocation & Tuning ............................................................................................................................. 251
4.2.7.9.1. HBW Telecommand Unit (TCU) ....................................................................................................................... 251
4.2.7.9.2. HBW Telemetry Simulator ................................................................................................................................. 251
4.2.7.9.3. HBW Telemetry Units (TMU) ........................................................................................................................... 252
4.2.7.9.4. Video 1 & 2 Output Level Setting ...................................................................................................................... 252
4.2.7.10. UDP Telemetry Data ................................................................................................................................................ 253
5. MAINTENANCE PROCEDURES ....................................................................................... 254
5.1. PREVENTIVE MAINTENANCE ............................................................................................................................ 255
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