HP 8920A - Page 136

AM Transmitters
134
Measurement Procedure:
1. Connect the Transmitter as shown.
CAUTION: 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.
On the Radio:
4. Key the Transmitter.
On the Test Set using the knob and data entry keys:
5. Set AF Anl In to AM Demod.
6. Adjust AFGen1 Lvl until AM Depth is 80%.
On the Radio:
7. Un-key the Transmitter.
Tune Mode
To Screen
TX TEST
AM Depth
Auto/Manual
TX Frequency
TX Power
Tune Freq
27.065000
MHz
IF Filter
230 kHz
Input Port
RF In/Ant
AF Anl In
SSB Demod
Filter 1
<20Hz HPF
Filter 2
>99kHz LPF
De-Emphasis
750 us/Off
Detector
Pk+-Max
Ext TX Key
On/Off
TX Pwr Zero
Zero
AFGen1 Lvl
830
mV
AF Freq
RF GEN
RF ANL
AF ANL
SCOPE
SPEC ANL
ENCODER
DECODER
RADIO INT
More
AFGen1 Freq
1.0000
kHz
kHz
%
W
MHz
27.064762
4.58 1.00001
78.3
AM Depth
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