SRS Labs SR430, Manual

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Remote Programming
95
FILE FORMATS
The formats of the files stored by the SR430 are described below. Disks written by the SR430 may be read on
a MSDOS computer with a 3.5" disk drive. However, the files are not stored as ASCII files. They cannot be
simply typed on the screen. The data is stored in binary format to keep the length of the files as short as
possible.
In the following table, byte 0 refers to the first byte in the file. Integer and real number formats follow the
Microsoft formats.
TRACE FILE Byte Type Explanation
0-11 ASCII character The string "SR430_TRACE"<cr> appears at the begin-
ning of the file
12 2 byte integer bin width (0-19) (see BWTH command)
14-15 reserved
16 2 byte integer bins per record (1-16) (see BREC command)
18-35 reserved
36 4 byte real minimum data value (if floating point data)
40 4 byte real range of data (if floating point data)
44 4 byte integer records accumulated
48 2 byte integer data point for bin 0
50 2 byte integer data point for bin 1
... ...
continues until last data point in record.
If the trace file represents integer count data, the data points are simply 2 byte integers which are the counts
in each bin. If the file was saved as floating point data (after a CALC function), then the data is stored differ-
ently. Each data point is stored as a 2 byte integer which can be converted into the correct floating point value
as follows.
Float Value = (Integer data point/65,536)x(range of data) + (minimum data value)
SETTINGS FILE Byte Type Explanation
0-11 ASCII character The string "SR430_SET "<cr> appears at the beginning
of the file
12 2 byte integer bin width (0-19) (see BWTH command)
14-15 reserved
16 2 byte integer bins per record (1-16) (see BREC command)
18 2 byte integer Trigger Offset
20 2 byte integer Records per Scan
22 4 byte integer records accumulated
26 2 byte integer Trigger Level/.001V
28-29 reserved
30 2 byte integer Discriminator Level/.0002V
32-35 reserved
36 2 byte integer Toggle Count
38-39 reserved
40 2 byte integer AUX 1 Level/.005 V
42 2 byte integer AUX 2 Level/.005 V