HP ESA-L1500A, User'S And Calibration Manual

Page: 305 / 326

304 Chapter 9
Performance Verification Tests
24. Non-Harmonic Spurious Outputs, Options 1DN and 1DQ
Measuring Fundamental Amplitudes
4. Connect the Type-N cable from the tracking generator output to the
microwave spectrum analyzer RF Input as shown in Figure 9-28 .
5. Set the spectrum analyzer center frequency to the Fundamental
Frequency listed in Table 9-27 .
6. Set the microwave spectrum analyzer controls as follows:
SPAN
,
100 kHz
REFERENCE LEVEL
,
+5 dBm
(
50 Ω
RF Out only)
REFERENCE LEVEL, 0 dBm
(75
Ω
RF Out only)
ATTEN
,
20 dB
LOG dB/DIV
,
10 dB
7. Set the microwave spectrum analyzer CENTER FREQUENCY to
the Fundamental Frequency listed in Table 9-27 .
8. On the microwave spectrum analyzer, press
Peak Search
. Press
MARKER
→
REF LVL
. Wait for another sweep to finish.
9. Record the microwave spectrum analyzer marker amplitude reading
Table 9-27 as the Fundamental Amplitude.
10.Repeat step 5 through step 9 for all Fundamental Frequency
settings Table 9-27 .
Table 9-27 Fundamental Response Amplitudes Worksheet
Measuring Non-Harmonic Responses
11.On the spectrum analyzer, set the center frequency to 10 MHz.
12.Set the microwave spectrum analyzer Start Freq, Stop Freq, and Res
BW as indicated in the first row of Table 9-28 .
75
Ω
outputs only: Measure only at start frequencies of 1 MHz and
greater.
13.Press
SINGLE
on the microwave spectrum analyzer and wait for the
sweep to finish. Press
Peak Search
.
Fundamental
Frequency
Fundamental
Amplitude (dBm)
10 MHz
750 MHz
1.5 GHz