Keysight Technologies X Series Service Manual page 651

Functional Tests
Frequency Response (Flatness)
4. Press Mode, Spectrum Analyzer, Mode Preset on the signal analyzer, and
5. Set up the synthesized sweeper by pressing:
6. Set up the signal analyzer by pressing:
7. Adjust the synthesized sweeper output power for a power meter reading
8. On the signal analyzer, press Single.
9. Press the Peak Search key on the signal analyzer to position the marker on
10.Refer to
11.Enter the power meter reading into the Power
12.Tune the synthesized sweeper and signal analyzer to the next frequency
13.Enter the power sensor calibration factor into the power meter.
14.For frequencies 3.6 GHz and above, press AMPTD Y Scale, then Presel
15.Repeat
16.Compute the measurement error (Meas
17.Compute the flatness error normalized to 50 MHz:
18.Enter the computed flatness error value into the Flat
19.Compare the value of Flat
Keysight N9010A EXA Service Guide
press Preset on the synthesized sweeper.
CW, 50, MHz
Power level, –4, dBm
Input/Output, More, Freq Ref In, External
FREQ Channel, Center Freq, 50, MHz
SPAN X Scale, Span, 50, kHz
AMPTD Y Scale, Ref Level, 0, dBm
of –10 dBm ±0.1 dB.
the peak of the signal.
Table 17-6, "Frequency Response (Flatness) Results."
amplitude of the signal displayed on the signal analyzer into the Meas
column of Table 17-6.
listed in Table 17-6.
Center to center the preselector filter for an optimum amplitude
measurement.
step 7 through
for the frequency range of your analyzer.
(Meas − Meas
Error Error
17-6.
step 14 and complete the remainder of
Error
@ 50 MHz)
to the test limit.
Norm
Enter the
column of Table
Meter
Table 17-6
= Meas − Power
Amp Meter
column of
Norm
Amp
17-6.
).
Table
651