Wavecom W61PC V7.5.0 - Manual (Page 313)

WAVECOM Decoder W61PC/LAN Manual V7.5 WAVECOM Data Formats  303
Element Type Description
lTimestamp int64 The timestamp is stored as a 64 bit signed number, representative of
the time of capture of the first sample in the chunk block, in microsec-
ond resolution. It is stored as the number of microseconds since begin-
ning of the epoch (i.e. 1st January 1970 midnight).
awRealData Float32[length
of
real data array].
Real float 32 numbers.
WAVECOM Data File Format
The decoder is able to save data and decoder settings in a special binary file format called WDA, which is
described in this section. WDA files may used to provide input for the BitView Tool.
WDA files are capable of storing various kinds of information:
 Text data
 Graphics data
 FELDHELL data
 Signal analysis data
 SAT mode data
 Classifier data
 Classifier CodeCheck data
 Sonagram data
All types of WDA files contain a header that identifies the type of data stored in the file and other infor-
mation related to the stored data and the data proper (see below).
File Header
Identical information is stored in the first 64 Bytes of the header, but depending on the data stored in the
data part of the file, the header may contain additional information, which increases its size.
The default size of the file header is 64 bytes.
The Signature is always “WDA”.
Note: Older versions may carry the signatures “W51PC”, “W41PC” or “W40PC”.
The File Type is dependent on the stored data and can have the following values:
 Text
 Graphics
 FELDHELL
 SigAnal
 SAT
 Classifr
 CCC
 Sonagram
64 Bytes n Bytes
FileHeader Data
8 Bytes 8 Bytes 4 Bytes 4 Bytes 8 Bytes 32 Bytes
Signature FileType Version LineCount Pad Pad2