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.
Monitoring 4.5.5.1.2
Status and alarms in this window are described in DPU.
Upper Banner 4.5.5.1.2.1
See section 4.5.4.1.2.1 .
Frame Synchronizer Status 4.5.5.1.2.2
Telemetry frame counter. Reset to 0 when the frame synchronizer unlocks or by
clicking on in the upper tool bar (the DPU window must be active).
Bit slippage measured by the frame synchronizer.
Number of loss of lock on the frame synchronizer. Reset to 0 by clicking on
in the upper tool bar (the DPU window must be active).
CRC or Check-Sum test result: Alarm or OK. Forced to OK if parameter Frame
Checking is set to Off.
Reed Solomon decoders Status 4.5.5.1.2.3
Number of symbols corrected by the Reed-Solomon decoder (average value
computed over a one-second period of time). Displays Exceeded if the maximum
correction capability is reached (number of corrected symbols greater than [16 x
Interleave Factor]).
Number of good transfer frames received from the Reed Solomon decoder. Reset
to 0 when the Frame Synchronizer or the Reed Solomon decoder is set to OFF or
by clicking on in the upper tool bar (the DPU window must be active).
Number of bad transfer frames received from the Reed Solomon decoder. Reset
to 0 when the Frame Synchronizer or the Reed Solomon decoder is set to OFF or
by clicking on in the upper tool bar (the DPU window must be active).
Ratio between the number of corrected bits and the total number of bits processed
by the Reed Solomon decoder. Reset to 0 when the Frame Synchronizer or the
Reed Solomon decoder is set to OFF or by clicking on in the upper tool bar
(the DPU window must be active).
Important: the BER is calculated before Reed Solomon decoding.
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