U9361C/F/G/M RCal Receiver Calibrator Measurement Guide
19
RCal Software – Calibration and Application
The following warning indicates that more than two rows match state:
When performing a calibration, no corrections will be made outside of the calibration bandwidth.
However, if performing a calibration on a signal with a wider bandwidth than the calibration
bandwidth, corrections will still be applied within the calibrated bandwidth.
Key Steps for Every RCal Calibration
The following procedure should be followed before every RCal calibration to guarantee the best
possible accuracy:
1.
RCal calibrations are independent of measurement time and temperature, which are
parameters that are handled through routine spectrum analyzer alignments. For the best
possible accuracy, alignments should be run before every RCal calibration and after a 30
minute warm-up time. The RCal module does
not
replace spectrum analyzer calibrations and
alignments.
2.
Make sure that the Ext 10 MHz reference is connected and that the selected USB connection
supplies ample current.
3.
If source control is desired for the calibration, connect the necessary input and output triggers
between the analyzer and source.
