Keysight Technologies X Series Service Manual page 647

Functional Tests
Amplitude Accuracy at 50 MHz
7. Perform the following steps for each row listed in
Table 17-4
Nominal Attenuation
Source
Amplitude
(dBm)
−4
−9
−14
−4
−14
−4
−14
Keysight N9010A EXA Service Guide
Input/Output, RF Input, RF Coupling, select DC (except Options 532,
and 544)
Sweep/Control, Sweep Setup, Swp Time Rules, SA - Accuracy
Meas Setup, Average/Hold Number, 20, Enter
Trace/Detector, Trace Average
Single
a.Set the synthesized sweeper amplitude to the value listed in the
Nominal Source Amplitude column in
b.Set the Mech Atten as indicated in the Attenuation column in
17-4
c.Set the Span as listed in the Span column of
d.Record the source amplitude, as measured by the power meter, in the
Power Meter Amplitude column of
e.On the signal analyzer, press Restart.
f.Wait for the signal analyzer to finish averaging.
g. Press Peak Search.
h. Record the signal amplitude, as measured by the analyzer in the
Measured Amplitude column of
i. Calculate the signal amplitude accuracy error using the following
equation, and record the results under the Amplitude Accuracy
Error column:
Amplitude Accuracy Error = Meas_amp − Power_meter
Amplitude Accuracy Results
Span Measured
(dB) (MHz) Amplitude
Meas_amp
10 2
10 1
10 0.5
20 0.1
20 0.1
30 0.1
30 0.1
Table 17-4
Table 17-4
Power Meter
Amplitude
Power_meter
(dBm) (dBm)
Table 17-4:
Table 17-4
Table 17-4
Amplitude Test Limit
Accuracy (dB)
Error
(dB)
±1.20 dB
±1.20 dB
±1.20 dB
±1.20 dB
±1.20 dB
±1.20 dB
±1.20 dB
Table
647