High Bandwidth Scenario; Pm And Fm Modulation; Single Pcm Input Signal - Safran CORTEX CRT Quantum User Manual

3.4.1.2. High Bandwidth Scenario

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3.4.1.2.1. PM and FM Modulation

Single PCM Input Signal

3.4.1.2.1.1.
External data + clock
Built-in TMS or TCU
Data & clock
monitoring
Figure 52: High Bandwidth Uplink Scenario with PCM Input Signal (PM, FM)
© Safran Data Systems
COMMAND RANGING & TELEMETRY UNIT CORTEX
CRT QUANTUM USER'S MANUAL
The IF carrier is modulated by a video or/and PCM signal.
In case of single high bandwidth PCM signal, all modulation schemes are supported:
PCM/PM, PCM/FM, BPSK, QPSK, OQPSK modulation, with filtering capability (matched
filters).
Sub-carrier generation can be by-passed.
Signal bandwidth: ≤ 2 MHz if the sub-carrier is enabled or up to 40 Mbps for direct PCM
modulation (modulation dependent).
TCU or TMS monitoring (data + clock) on output test points if one data I/O test set is
enabled (see section 2.3.4.2 and Annex 5).
External data & clock input on test points if one data I/O test set is enabled (see section
2.3.4.2 and Annex 5).
IFM factory setting: PCM only or Video + PCM or PCM + PCM). Sub-carriers are not
allowed in PCM and PCM + PCM modes.
PCM
Sub-carrier
& convolutional
modulation
encoding
PCM
& convolutional
encoding
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Modulation
index
Video
Input
PM, FM
modulation
Modulation
index
Modulation
index
Safran Data Systems
.
Ref. DTU 100042
Is.Rev. 5.17
Date: Dec.
03, 2021Sept. 30, 2021
Noise
IF
outputs
IF
filtering
(Option) (Option)
Page 113