Performance Tests 2
Keysight N8262A Service Guide 45
1 mW Power Reference Level Test
Description
The 1 mW power reference is used for the calibration of 8480 Series and E-Series
power sensors, and is traceable to national standards. This test uses an 8482A
power sensor to transfer the power measured on an accurately calibrated E4419B
or E4417A power meter to the DUT reference.
Equipment
Required test equipment: 1 unit of E4419B or E4417A dual channel power meter,
1 unit of 8482A power sensor. Either of these E4419B or E4417A power meters
can be used. This specific power sensor model must be used.
Test method
1 Enter the recorded measurement uncertainty of the E4419B or E4417A 1 mW
power reference.
2 Using the E4419B or E4417A power meter and the 8482A sensor, measure the
1 mW power reference of the E4419B or E4417A.
3 Using the E4419B or E4417A power meter and the 8482A sensor, measure the
1 mW power reference of the DUT.
4 Using all of these values, the N7832A software will calculate the power
reference level of the DUT.
– The 1 mW reference of the E4419B or E4417A power meter must be precisely
calibrated at a standards accredited lab, and the uncertainty of this
measurement known.
– Anyone who has a basic understanding of metrology should be able to
perform this test manually; it is simply the transfer of known power level with
a known calibration uncertainty to the DUT.
– An adjustment is available for this test if it fails (see Chapter 3,
"Adjustments").
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