Safran CORTEX Series - Page 261

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 261
BIT RATE
OR
SYMBOL RATE
Telemetry bit rate. Expressed in bps. Enter any value from 1e6 to the maximum
admissible bit rate (license, modulation and firmware are menu dependent)
Important: if the data are convolutionally encoded, enter the bit rate at the Viterbi
decoder input (bit synchronizer output).
In DVB-S2, SCCC and VCM modes, the Bit Rate is replaced by the Symbol Rate
PCM CODE
Telemetry PCM coding technique: NRZ-L/M/S, DNRZ, Bi-P-L/M/S, NRZ-M Merge
Important: if NRZ-M Merge is selected, the NRZ-M to NRZ-L decoding is performed
after the merging of the data coming from I and Q. If NRZ-M is selected the decoding
is performed separately on I and Q before data merging.
RANDOMIZER
Auto-synchronized de-scrambler:
 Disable de-randomizer disabled
 Worldview Worldview type (menu 11 only)
 CCITT V.35 Menu 3 only
 Intelsat V.35 Menu 3 only
I/Q POLARITY
For QPSK, 16QAM and n-APSK modulations:
 Normal Direct I & Q
 I Inverted I inverted, direct Q
 Q Inverted direct I, Q inverted
 I/Q Inverted I &Q inverted
 Swap Normal I&Q swapped & direct
 Swap I Inv. I&Q swapped, I inverted & direct Q
 Swap Q Inv. I&Q swapped, direct I & Q inverted
 Swap I/Q Inv. I&Q swapped & inverted
 Ambig DPUA (B) Ambiguity resolution by DPU A (B)
 Ambig DPUC (D) Ambiguity resolution by DPU C (D)
 Ambig DPUA+C (B+D) Ambiguity resolution by DPU A&C (B&D)
 Ambig BER Ambiguity resolution by the BER tester
 Ambig 4DPU Ambiguity resolution by 4 DPU (specific menu
16)
 Ambig 8DPU Ambiguity resolution by 8 DPU (specific menu
16)
For 8PSK modulation:
 Normal Direct output (no rotation)
 Rot 45° 45° rotation of the 8PSK phase constellation
 Rot 90° 90° rotation
 Rot 135° 135° rotation
 Rot 180° 180° rotation
 Rot 225° 225° rotation