HIGH DATA RATE RECEIVER
HDR-4G+ USER’S MANUAL
Ref. DTU 100782
Is.Rev 3.5
Date: June 1, 2021
© Safran Data Systems – IMP000074 e14r1
This document is the property of Safran Data Systems.
It cannot be duplicated or distributed without expressed written consent.
Playback 1.6.5
Operating Modes: Test Modulator mode: replay at IF level using the Test Modulator board
Data + Clock mode: Replay at the demodulator(s) PCM data outputs (Data +
Clock outputs)
Data sources: Recorded files from a previous satellite pass
User files
Replay data rate : Programmable up to 800 Mbps
Test Modulator 1.6.6
IF Modulation 1.6.6.1
IF carrier frequency Programmable over the range 520 MHz to 2.2 GHz and 1.8 GHz to
3.2 GHz
IF output port 2
Output level -5 dBm to -50 dBm (optimal -10 dBm to -40 dBm) (0.05 dB steps)
Output level setting accuracy 2 dBm
Output impedance / VSWR 50 / 1.3
IF stability As per reference clock (internal or external)
Unwanted emissions Better than -40 dBc @ -10 dBm output level
Noise Source 1.6.6.2
Noise source ON/OFF
Noise density -93 dBm/Hz to -130 dBm/Hz (1 dB steps)
Noise bandwidth 2 GHz
Modulation 1.6.6.3
Modulation BSPK , QPSK , OQPSK (SQPSK)
UQPSK (AQPSK, AUQPSK, AUSQPSK)
8PSK, 16QAM, 16APSK, 32APSK, 64APSK
Symbol rate Up to 2.0 Gbauds (may vary depending on selected encoding
scheme)
Convolutional coding Compliant to CCSDS recommendation (See characteristics in 0)
Single or Dual encoding mode, rate ½, parallel mode (stacked
Viterbi)
TCM
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