Safran CORTEX CRT Quantum - Page 45

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
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It cannot be duplicated or distributed without expressed written consent.
Page 20
1.6.1. IF Reception
1.6.1.1. Analog Reception
1.6.1.1.1. IF Stages
 IF input stages 3
 IF input ports 2 per input stage (Nominal & Alternate)
 Input bandwidth 50 to 90 MHz (- 3 dB bandwidth)
 Input impedance 50 Ω
 VSWR ≤ 1.25
 Isolation between channels ≥ 80 dB
 Aliasing rejection ≥ 80 dB
 Maximum noise level - 20 dBm
 (or No = - 96 dBm/Hz for 40 MHz noise bandwidth)
 AGC range (CRT XL Quantum) - 15 to -105 dBm
 AGC range (CRT eXplorer) - 15 to -120 dBm
 AGC time constant 0.1, 1, 10, 100 or 1,000 ms
 AGC mode Analog AGC : Non coherent
Digital AGC : Non coherent before carrier acquisition
then coherent (for PM and direct PCM, in a few Hz)
1.6.1.1.2. Auxiliary Inputs
Two Auxiliary input ports allow receiving baseband or IF signals for test purposes (example: TC demodulation at
IF):
 Input ports 2
 Input signal Baseband or IF signal
 Input bandwidth At baseband : DC to 20 MHz
At IF : 0 to 90 MHz

 Input signal level At baseband : 0.1 to 0.5 Vpp
At IF : 0 to - 20 dBm
 AGC No
 Input impedance 50 Ω