Keysight Technologies U8480 Series Service Manual page 30

2 Performance Verification and Adjustments
7 Read the power level of the DUT by sending "READ?", and then record the
8 Compare the reading to the specification in the datasheet. If the verification
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reading.
fails, repeat steps 3 to 7. If the verification fails for three times consecutively,
refer to "Adjustments" on page 31.
Keysight U8480 Series Service Guide