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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
TT
and use the modify cursor keys to alter the
attenuation.
6
On the HP 8153A:
a
Press D
ISP
–>R
EF
then
D
B.
b
Press U
P
to select the –10 dBm range.
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
ISP
–>R
EF
, then
D
B.
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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