Tcp-Ip Data Recovery; Figure 42: Data Transmission Over Tcp-Ip. Message Formatting - Safran CORTEX Series User Manual

3.4.11.3

TCP-IP Data Recovery

In TCP-IP mode, up to 6 clients can connect to the telemetry port (port # 3075) for receiving real-time
or recorded data. Connected clients must send a data request specifying:
 The data source (Data Processing Unit number: A, B or C),
 The message size (number of TM Blocks per TCP-IP message)
 The requested Virtual Channel(s), for CCSDS applications
 The first TM Block to transmit: first block in the HDR real-time buffer or TM block with specified
time-tag (real-time or recorded data).
Next figure illustrates the data formatting for real-time and recorded TM Messages. See Annex 1, STI
100013_HDR Section 2.6 for more details on the Ethernet interface.
Real-time or recorded data to remote Ethernet Clients
Up to 131,072 TM Blocks per TM Message
RAM Buffers
X, Y & Z defined in DRG table # 1
(applies also to disk partitioning)
Header
PC RAM Buffer
for TM-A
X%
PC RAM Buffer
for TM-B
Y %
Free space
Z %

Figure 42: Data Transmission over TCP-IP. Message Formatting

© Safran Data Systems – IMP000074 e14r1
HIGH DATA RATE RECEIVER
HDR-4G+ USER'S MANUAL
FIFO-structured
8 TM packets per buffer
(512-byte alignment)
TM Packet # 1
TM Packet # 2
...
...
...
...
TM Packet # 7
TM Packet # 8
Data storage in TM files on the hard disk
Number of TM packets per file : DRU table # 4
This document is the property of
It cannot be duplicated or distributed without expressed written consent.
Ref. DTU 100782
Is.Rev 3.5
Date: June 1, 2021
Message preamble
& status
Recorded data playback
Real-time or recorded
TM Block(s) Real-time data
Message postamble
TM Message
TM Block # 1
TM Block # 2
...
...
...
TM Block # N
TM Packet = N x TM Blocks
N is computed from
X% and frame size
TM Block size : up to 1,048,656 bytes
Safran Data Systems
SW Frame...
or raw data
(8-byte words + filler
Time-tag (8 bytes)
Status (8 bytes)
Up to 8 optional
spare words
DRU table # 23
TM Block :
(DRU table # 35)
Frame size : up to 1,048,576 bytes
(DPU table # 3)
.
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