Safran CORTEX CRT Quantum - Page 55

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 30
1.6.5. Satellite Commanding (Low Bandwidth Mode)
 Supported commands Clear or Scrambled TC message transmission
High-level TC requests (see Annex 5)
Wait and verify with time-out & retry instruction
Pause instruction, Grouped instructions
TC message transmission at programmed time
Last radiation time request
Idle pattern generation
 Supported protocols Satellite-specific protocols (see Annex 5)
CCSDS COP-1
 Modulation FSK, no blanking
FSK + half-bit blanking. Duty cycle: 50/50 (default setting)
BPSK, BPSK+AM
BPSK SQUARE
Satellite-specific modes
(contact SAFRAN DATA SYSTEMS for more information)
 PCM coding BP-L/M/S, NRZ-L/M/S, RZ
 Convolutional coding No
 Bit rate 10 to 10 000 bps, 7 to 10000 bps with PACK-EXT License
 BPSK SCF 100 Hz to 125 kHz
 FSK tone frequency (0/1) 100 Hz to 100 kHz
 Execute tone frequency 100 Hz to 100 kHz
 Pseudo-earth tone frequency 100 Hz to 100 kHz
 SCF and BR stability As per the reference clock (external or internal)
 Execute & pseudo-earth pulses Programmable duration (10 µs to 10 000 seconds in 10-µs step)
Programmable period (10 µs to 10 000 seconds in 10-µs step)
Programmable number of pulses (1 to 65536)
 Idle pattern Programmable length (1 to 16 bits) and contents
 Preamble length 0 to 2
24
bits
 Pause duration 10 µs to 10 000 seconds in 10-µs steps
 Synchronized TC protocol S/W license. PCM & FMRT modes. High-level commanding interface.
Pulses monitoring
 Local TC capability MS ACCESS database. Customized databases on request.