32 Ghz And 44 Ghz Models Only; 40 Ghz Models Only - Keysight Technologies E8257D Service Manual

Troubleshooting
Troubleshooting Harmonic Spurious
7. If harmonics meet or exceed specification, reconnect the cable to the A29
8. Set the signal generator and spectrum analyzer to the harmonic
9. Set the signal generator to the fundamental frequency of the harmonic.
10.Using the delta marker, read the harmonic power level on the spectrum
11.If the harmonics do not meet specification, replace the A30 Modulation

32 GHz and 44 GHz Models Only

Use this procedure to troubleshoot harmonic problems with a fundamental
frequency between 10 GHz and 16 GHz for Option 532, and between 10 GHz
and 22 GHz for Option 544.
1. Set the signal generator as follows:
2. Remove the cable from the A37 20–44 GHz Upconverter (W102). Connect
3. Set the spectrum analyzer to the harmonic frequency, then press peak
4. Set the signal generator to the fundamental frequency of the harmonic.
5. Using the delta marker, read the harmonic power level on the spectrum
6. If the harmonics do not meet specifications, replace the A37 20–44 GHz

40 GHz Models Only

Use this procedure to troubleshoot harmonic problems with a fundamental
frequency between 2 GHz and 20 GHz
1. Set the signal generator as follows:
E8257D/67D, E8663D PSG Signal Generators Service Guide
20 GHz Doubler J2 and remove the cable going to the A30 Modulation
Filter J2 (W31). Connect the spectrum analyzer to the A30 Modulation
Filter J2.
frequency. On the spectrum analyzer, press marker peak search and delta
marker.
analyzer. Compare the spectrum analyzer reading to the specifications in
Table on page 127.
Filter.
— Frequency: set to harmonic frequency to be measured
— Amplitude: +10 dBm
— ALC Off
— Amplitude Power Search (softkey)
the spectrum analyzer to the A37 20–44 GHz Upconverter (J4).
search and delta marker.
analyzer. Compare the spectrum analyzer reading to the specifications in
Table on page 127.
Upconverter.
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