HP 8920A - Page 129

AM Transmitters
127
9. Set AFGen1 Lvl measurement units to dBm.
10. Increase AFGen1 Lvl by 20 dB.
Displayed AM depth should not exceed 100%.
11. Change AFGen1 Freq from 300 Hz to 3 kHz (in 100 Hz increments).
12. Verify that the displayed AM depth does not exceed 100%.
Tune Mode
To Screen
TX TEST
AM Depth
Auto/Manual
TX Frequency
TX Power
Tune Freq
28.310000
MHz
IF Filter
15 kHz
Input Port
RF in/Ant
AF Anl In
AM Demod
Filter 1
300Hz HPF
Filter 2
3kHz LPF
De-Emphasis
750 us/Off
Detector
Pk+-Max
Ext TX Key
On/Off
TX Pwr Zero
Zero
AFGen1 Lvl
3.00
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
28.310176
18.3 0.99852
31.2
Microphone
Sensitivity
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