Safran CORTEX CRT Quantum - Page 57

COMMAND RANGING & TELEMETRY UNIT CORTEX
CRT QUANTUM USER'S MANUAL
Ref. DTU 100042
Is.Rev. 5.17
Date: Dec. 03, 2021Sept.
30, 2021
© Safran Data Systems
This document is the property of Safran Data Systems.
It cannot be duplicated or distributed without expressed written consent.
Page 32
1.6.7. Telemetry Simulation
 Simulated telemetry data source Simulated telemetry files (TMS in File mode)
Stored telemetry files (TMS in Replay mode)
Data received on the LAN (TMS in LAN mode)
Pseudo Random Bit Sequence (TMS in Pseudo mode)
 PRBS polynomial & length X
15
+ X + 1.32767 bits.
 Output BPSK, BPSK SQUARE, PCM/PM, PCM/FM or direct PCM
 SCF 40 Hz to 128 kHz (low bandwidth), 40 Hz to 512 kHz (LBW extension)
5 kHz to 2 MHz (high bandwidth, with sub-carrier)
 Bit Rate 10 bps to 19 kbps (low bandwidth setting), 64 kbps (with LBW extension)
7 bps to 19 kbps with PACK-EXT License, 64 kbps (with LBW extension)
1 to 600 kbps (high bandwidth, sub-carrier)
1 kbps to 20 Mbps (high bandwidth, direct PCM) and 40 Mbit/s in case
of use of Viterbi ½ and 100k - 25Mbit/s in case of Tcm decoding
 PCM coding NRZ-L/M/S, BP-L/M/S, DBP-M/S, DM-M/S, V35
 BPSK modulation ON or OFF
 Polarity of transmitted NRZ-L Normal or inverted
 SCF and BR stability As per the reference clock (external or internal)
 File size 32768 bytes (File mode). No limitation (Replay mode)
 Automatic BER calculation Yes (TMS in Pseudo mode)
1.6.8. Doppler Compensation
1.6.8.1. Carrier, Sub-Carrier and Bit Rate
 Availability CRT XL Quantum : uplink only, licence dependant
CRT eXplorer : uplink and downlink
 Doppler compensation range ± 4 MHz
 Doppler compensation rate 3 mHz/s to 52 kHz/s
 Doppler compensation sampling 1 s, 0.1 s, 0.01 s and 0.001 s
 Doppler compensation step NCO refreshed every 160 µs, 16 µs, 1.6 µs and 0.16 µs