Safran CORTEX CRT Quantum User Manual page 52

IF Modulation
1.6.2.

Number of IF Modulator boards 1 or 2 (IFM-1, IFM-2)

Modulation

Carrier frequency (CRT XL Quantum)

Carrier frequency (CRT eXplorer)

Carrier frequency resolution

IF output bandwidth

Modulating signal

External analog input

PCM modulation filtering

Frequency deviation

Modulation index

IF output ports (per IFM)

Output level

Output level setting accuracy

Output impedance / VSWR

Carrier frequency stability

Unwanted emissions

IF phase noise (CRT XL Quantum)

IF phase noise (CRT eXplorer)

Carrier sweep range

Carrier sweep rate

Carrier sweep offset

Sweep step
© Safran Data Systems
COMMAND RANGING & TELEMETRY UNIT CORTEX
CRT QUANTUM USER'S MANUAL
FM, PM, BPSK, QPSK, OQPSK, AQPSK, 8PSK
60.0 to 78.0 MHz
60.0 to 78.0 MHz (226 to 234 MHz as option)
14 pHz (250 MHz / 264)
50-90 MHz (- 3 dB bandwidth)
Internal and external analog video signals (base band)
Internal or external PCM data streams
2 Vpp / 50 Ω
None, Raised or Root Raised & roll-off factor
0 to ± 5 MHz
0 to 2.5 radians
2 (Nominal & Test)
Nominal output
Alternate output
≤ ± 1 dBm (Nominal port, from 0 to -50 dBm, at 70 MHz)
50 Ω / ≤ 1.30
As per the reference clock (internal or external)
≤ - 60 dBc, from 0 to -20 dBm output level
-43.5 dBc/Hz at 10 Hz, falling to -120 dBc/Hz at 1 MHz
≤ 0.5° RMS in 1-MHz bandwidth (0.2° typical)
-70 dBc/Hz at 10 Hz, falling linearly to -120 dBc/Hz at 1 MHz
≤ 0.5° RMS in 1-MHz bandwidth (0.2° typical)
± 1 to ± 1,000 kHz
1 Hz/s to 175 kHz/s
0 to 1 MHz (signed)
NCO refreshed every microsecond
This document is the property of Safran Data Systems.
It cannot be duplicated or distributed without expressed written consent.
: 0 to - 80 dBm
: - 20 dBm
Ref. DTU 100042
Is.Rev. 5.17
Date: Dec. 03, 2021Sept.
30, 2021
Page 27