Mode l8500C/8500C+ Operators Manual
B-1
Appendix B. Spectral Data File Format
The Model8500C/C+ Balancer/Analyzer stores spectral data on disk when you press the
STORE
key
while in the Spectrum mode. Data files consist of ASCII text and are created with a unique file nam
based on the time and date, plus the file name extension *.SPC.
The annotation text last entered with the
ANNOTATE
key is written to the beginning of the file. This
information is identical to the annotation text appended to printouts. The following table (TableB-1)
describes the format and contents of a typical spectral data file.
Table B-1. Spectral Data File Format and Contents (Sheet 1 of 2)
Data from .SPC file Description
SPC Revision: 1.01
SPC file revision
05/20/97
acquisition dat
10:42:05
acquisition tim
AIRSPEED: KTS
annotation text, 1
PICKUP NO.:
...
ALTITUDE: FT
annotation text, 2
RUN NO.:
...
MFR/MODEL:
annotation text, 3
ID NO.:
...
COMMENTS:
annotation text, 4
:
annotation text, 5
8520 Signal Input: 1 Only
8520 signal source
5000000
9513 base frequency (Hz
13508
sample period (base cycles
1024
points in FFT frame
0
pickup period (base cycles)
0
bin 0 amplitude (mIPS)
0
bin 1 amplitude (mIPS)
0
bin 2 amplitude (mIPS)
0
bin 3 amplitude (mIPS)
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