Adjustments 3
Keysight N8262A Service Guide 61
Power Reference Level Adjustment
Equipment
As per the test equipment list for the 1 mW Power Reference Level Test
Test method
1 Set: Coarse = 834, Fine = 550
2 Measure the power ref. level as per the performance test:
a If the result is >1 mW, then increment COARSE by 1.
b If the result is <1 mW, then decrement COARSE by 1.
3 Repeat step 2 until the result crosses the 1 mW boundary (in either direction).
4 Measure power ref. level as per the performance test:
a If the result is >1 mW, then decrement FINE by 1.
b If the result is <1 mW, then increment FINE by 1.
5 Repeat step 4 until the result crosses the 1 mW boundary (in either direction).
6 The adjustment is completed.
– This adjustment can be performed manually via the commands:
SERV:CAL:ADJ:COUR<Value>
SERV:CAL:ADJ:COUR?
SERV:CAL:ADJ:FINE<Value>
SERV:CAL:ADJ:FINE?
(Refer to the Programming Guide for further details on the use of these
commands)
– COARSE and FINE values are valid in the range of 0 to 1023
– If adjustment is not possible, then a fault may be present in the DUT (see
Chapter 5, "Troubleshooting Guide").
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