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GSS7725 Interference Generator User Manual
© Spirent Communications plc 2002-2017
Figure 16 Calibrate_test.bat output
7.3 Calibrating the output level
In explorer navigate to the following directory:
C:\Program Files\Spirent Communications\Positioning Applications\GSS7725\etc
Run the following command as administrator:
calibrate.bat
The command should connect to the controller and run through a number of calibration routines at
each frequency from 0.8GHz to 2.2GHz. This will take a while to run; eventually it will finish without
error and produce a file within the
etc
directory called:
CalibrationTable_UsrpEthAtt.csv
This file can be loaded in to Excel and the line plotted. It will look something like:
Figure 17 Calibration file plot
The command will also generate three csv files that hold IQ calibration data in
C:\Users\xxxx\AppData\Roaming\.uhd\cal
were xxx is the account name (e.g. gpsadmin).
The
C:\Users\xxxx\AppData\Roaming\.uhd
directory must be copied and pasted to
C:\Windows\System32\config\systemprofile\AppData\Roaming\
merging with the
.uhd
directory and
replacing any files at this location.
Restart the controller PC, this will automatically load the new calibration file
