302 Keysight N9915-90020 User’s Guide
IQ Analyzer (IQA) – Option 351
I/Q Analyzer (IQA) Mode Settings
— Stop immediately stops the I/Q data file capture and stops writing
data to the current I/Q data file (no data is saved). If the I/Q data was
being saved when the Stop softkey is pressed, the file is deleted.
Refer to
“Example:” on page 302.
Example:
Single:
——If the Capture Time is set to 100 µs, and you press the Start
softkey, in Single mode the FieldFox saves 100 µs of the
current I/Q data.
Multiple:-
——If the File Count is set to 200, and you press the Start softkey,
the FieldFox saves your 200 I/Q data files and stops. The I/Q
data files are saved into 200 files similar to:
IQDataFile_yyyymmdd hh.mm.ss.ffff.csv.
——If you press
Stop, before the 200 I/Q data files have been
saved, the FieldFox stops (interrupts) the multiple I/Q data file
saving at the number of the current file. So, if you press Stop
on file number 175, the saving process stops. If file number 175
has not been saved, it is deleted. But, I/Q data files 1 through
174 that have been saved prior to pressing
Stop, are still saved
for reference.
See also,
Chapter 33, “File Management.”
Each time you press the Start softkey the I/Q data writes to the current filename (i.e., Single
capture default is IQDataFile.csv or for Multiple format is IQDataFile_yyyymmdd
hh.mm.ss.ffff.csv). To avoid overwriting your Single capture data or to add a unique filename for
Single or Multiple capture data, use the Measure 1 > Capture Data Settings > File
Settings > Filename softkey to modify your filename Refer to the File Count softkey on
page 300.
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