HP 8920A Application Handbook page 131

Test Set Options Required
Special Test Considerations
CAUTION:
Spectrum Analyzer/Tracking Generator (option 102)
Cable and adapter mismatch must be considered when
measuring harmonics and spurious emissions of a trans-
mitter. If an external attenuator is used, special care must
be taken to ensure the attenuator is not causing any spuri-
ous or harmonic emission. Also, if spurious emissions are
located, verify that the transmitter is the source, and not
another object radiated emissions near the test site
Measurement Procedure:
1. Connect the Transmitter as shown.
The RF present at the Test Set RF IN/OUT connector must not exceed 60W
continuous (or 100 Watts for 10 sec/minute) or permanent instrument damage
may result.
On the Test Set:
2. Press the PRESET key.
3. Press the TX key.
Using the knob:
4. Set AF Anl In to AM Demod.
On the Radio:
5. Key the Transmitter and keep keyed until the remaining steps are
completed.
On the Test Set using the knob and data entry keys:
6. Set AFGen1 Lvl so that displayed AM depth is 85%.
AM Transmitters
.
131