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DIGISONDE-4D
SYSTEM MANUAL
VERSION 1.2.11
5-42 SECTION 5 - SYSTEM SOFTWARE – ANNEX A
Science Data Packet structure, packet type 0x81
5:101. The following is true.
1. Each Science Data packet includes only part of measurement.
2. All packets of the same measurement are enumerated starting from 1 and this number is called Serial
Number of packet.
3. Packet may contain one or more Groups.
4. Packet may contain fractional part of Group.
5. Packet may contain not integral number of Groups.
6. Group may be split between packets.
7. Every packet duplicates some information (for example, Program), which is necessary to be interpreted
even if not all packets of measurement reach DCART.
5:102. The data section of the science data packets contains the following parts:
• DESC Release Version, Table 5A- 19
• Science Data Packet General Header, Table 5A- 20, holding information related to the data packag-
ing technique,
• Preface, Table 5A- 21, containing Program structure (which is the exact copy of Program that has
been used by DESC for generating this measurement), Time Stamp of start of measurement, Data
Processing applied to the data so far, and some other information.
• Group
o Group Header, Table 5A- 22, repeated for each group
o Databins
Major Release Version
Table 5A- 19: DESC Release Version, Length 3 Byte
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