2Service
136 Keysight 53210A/53220A/53230A Assembly Level Service Guide
12 Press the Perform Zero-Cal softkey to perform zero-calibration.
– Display momentarily shows:
– After a few seconds, display momentarily shows:
13 Select the ‘output enable’ ON feature of the microwave source or reconnect
the cable to the counter, as appropriate.
14 Use the front panel knob and left/right arrow keys to enter the value (500 MHz)
as shown.
If your microwave source does not have an ‘output enable/disable’ feature,
temporarily disconnect the cable from the microwave input channel until after
the zero-calibration is performed.
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