HP 8590 E & L Series Spectrum Analyzers and HP 8591C Cable TV ...

Note Execute CAL STORE after successful completion of the self-calibration
routines.
CAL Calibration
Connect a cable between CAL OUT and the spectrum analyzer input before
running the CAL FREQ, CAL AMP, or CAL ALL correction routines.
FREQ initiates the frequency correction routine and corresponds to CAL FREq .
AMP initiates the amplitude correction routine and corresponds to CAL AWTD .
ALL initiates frequency and amplitude correction routines. It corresponds to
CAL FREq & AMPTD .
Note fir an HP 8592L, HP 8593E, HP 85963 only: A cable must be connected
between COMB OUT and the spectrum analyzer input to use the comb signal
for CAL YTF.
Fbr the HP 85953 only: Connect the cable between the CAL OUT connector
and the spectrum analyzer input.
YTF initiates the correction routine for the YIG-tuned filter. The CAL YTF command
corresponds to CAL YTF . (HP 8592L, HP 85933, HP 85953, or HP 85963 only.)
DISP displays some of the correction factors on the spectrum analyzer display.
DUMP returns correction factors to the controller.
INIT sets the calibration data back to predetermined values. CAL INIT corresponds to
DEFAULT CAL DATA . Before executing CAL INIT, you must set the spectrum analyzer’s
center frequency -37 Hz to access this function. After CAL INIT has been performed, you
should perform CAL YTF for an HP 8592L, HP 85933, HP 85953, or HP 85963.
Note Before executing the CAL TG command, a cable must be connected between
the tracking generator output and the spectrum analyzer input.
TG performs the calibration routines if the tracking generator is installed (Option 010 or
011). CAL TG corresponds to CAL TRK GEI .
Refer to the HP 8590 E-Series and L-Series Spectrum Analyzers User’s Guide for more
information about the self-calibration routines, including the correct instrument set-up for each
routine.
CAL DISP and CAL DUMP do not return all of the correction factors because the number
of characters that can be displayed on the spectrum analyzer screen is limited. CAL DUMP
only returns the correction factors (as ASCII values) that would be displayed on the spectrum
analyzer screen. Refer to the Service Guide for your spectrum analyzer for more information
about displaying calibration data and reinitializing calibration data.
If the calibration data has been corrupted or is obviously inaccurate, use CAL FETCH to
retrieve the calibration data that has previously been saved. If the calibration data fetched is
corrupt, the following example can be used to set the calibration data back to predetermined
values. Execute OUTPUT 718;"CF -37HZ;CAL INIT;", then perform the CAL AMP, CAL FREQ,
or CAL ALL calibration routines. Use CAL STORE if the calibration routines have finished
successfully.
Programming Commands 5-87