Safran CORTEX Series - Page 7

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.
Page 7
Operating Modes ................................................................................................................................. 138 3.4.12.1
Sources of the data to replay ............................................................................................................... 139 3.4.12.2
Multi-DPU processing ........................................................................................................................... 139 3.4.13
Generality ............................................................................................................................................ 139 3.4.13.1
Ambiguity resolution by the DPUs ..................................................................................................... 144 3.4.13.2
BER measurements ............................................................................................................................. 145 3.4.13.3
Data output .......................................................................................................................................... 146 3.4.13.4
Guide for multi DPU Operation .......................................................................................................... 147 3.4.13.5
POLARIZATION COMBINING ........................................................................................................................ 152 3.5
General ..................................................................................................................................................... 152 3.5.1
Data Path ................................................................................................................................................. 152 3.5.2
Signal Processing ..................................................................................................................................... 153 3.5.3
TEST MODULATION ..................................................................................................................................... 155 3.6
Data Generation ....................................................................................................................................... 155 3.6.1
Data Sources ......................................................................................................................................... 155 3.6.1.1
Pseudo Random Data ......................................................................................................................... 155 3.6.1.1.1
Data from File .................................................................................................................................... 156 3.6.1.1.2
File Format ...................................................................................................................................... 156 3.6.1.1.2.1
Cycle Length ................................................................................................................................... 156 3.6.1.1.2.2
External Data & Clock (Input Format) .............................................................................................. 157 3.6.1.1.3
Playback ............................................................................................................................................. 157 3.6.1.1.4
Internal and External framing ............................................................................................................... 157 3.6.1.2
Framing features ................................................................................................................................ 157 3.6.1.2.1
Framing and Cycle Length ................................................................................................................. 158 3.6.1.2.2
Encoding ............................................................................................................................................ 158
3.6.1.2.3
Scrambling ......................................................................................................................................... 158 3.6.1.2.4
FECF .................................................................................................................................................. 159 3.6.1.2.5
Modulation Unit ....................................................................................................................................... 159 3.6.2
Main features ........................................................................................................................................ 159 3.6.2.1
Constellation Mapping .......................................................................................................................... 159 3.6.2.2
DNRZ Coding ....................................................................................................................................... 164 3.6.2.3
Multi-DGU support ............................................................................................................................... 165 3.6.2.4
DVB-S2 & SCCC ................................................................................................................................. 167 3.6.2.5
IF Signal Generation ................................................................................................................................ 167 3.6.3
IF1 and IF2 ............................................................................................................................................ 167 3.6.3.1
Doppler ................................................................................................................................................. 173 3.6.3.2
Modulation of external data ..................................................................................................................... 173 3.6.4
Direct input to the modulator ................................................................................................................ 173 3.6.4.1
Principle ............................................................................................................................................. 173 3.6.4.1.1
Configuring the modulator and the format input ............................................................................... 176 3.6.4.1.2
BER estimation .................................................................................................................................. 177 3.6.4.1.3
MCS preset files ................................................................................................................................. 177 3.6.4.1.4
Constraints ......................................................................................................................................... 178 3.6.4.1.5
CABLE EQUALIZER FILTER .......................................................................................................................... 179 3.7
DATA LOGGING ........................................................................................................................................... 181 3.8
Standard Loging ....................................................................................................................................... 181 3.8.1
Extended Logging ..................................................................................................................................... 182 3.8.2
System Logging ........................................................................................................................................ 184 3.8.3
4 OPERATING MANUAL.................................................................................................................................. 185
STARTING AND CONFIGURING THE CORTEX HDR ................................................................................... 185 4.1
First Steps................................................................................................................................................. 185 4.1.1