Safran CORTEX CRT Quantum, User Manual

Page: 45 / 346

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 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