Agilent Technologies HP E5574A User Manual page 207

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Appendix D. Performance Test
Test IV. Linearity and Accuracy
5 Alter the attenuation until the HP 8153A displays –17.4dBm.
a At the Attenuator:
Press A and use the modify cursor keys to alter the
TT
attenuation.
6 On the HP 8153A:
a Press D –>R
ISP EF
b Press U to select the –10 dBm range.
P
7 Note the deviation, displayed in dB, as R1 in the test record.
8 In the –10 dBm range.
a Set the display to show results in dBm.
b Alter the attenuation until the DUT displays –7.4 dBm.
c Press D –>R
ISP EF
d Select the 0 dBm range.
e Note the deviation, displayed in dB, as R2 on the test record.
9 Repeat the steps a. to e. at all ranges and level settings shown in
the test record.
10 Calculate the non-linearity using the formula in the test record.
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then B.
D
, then B.
D