Normal Am Dynamic Range - Agilent Technologies 83620A Service Manual

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5. On the synthesizer, press:
(Set to 2 GHz for synthesizers with lowest start frequency of
CW 1 GHz
5 5 5
2 GHz)
FREQUENCY
MENU
POWER
Uncoupl Atten
MENU
5
0
POWER LEVEL 10
5 5
Verify that all modulation is o . (No asterisks next to key labels.)
MOD
5
For synthesizers with Option 002, if modulation is on, an \AM," \FM," or
\PLS" message will be displayed.
6. On the power meter, set:
Mode:
Cal Factor %: Cal factor corresponding to the
7. On the function generator, turn o all waveforms and set:
0
DC Offset:

Normal AM Dynamic Range

8. On the synthesizer, turn on AM modulation to 10 dB/V:
AM On/Off 10dB/V
MOD
5
or, for synthesizers with Option 002, press:
AM Menu AM On/Off Ext
MOD
5
AM Type 10 dB/V
9. Decrease the function generator output just until the OVERMOD message
turns on. hen increase the signal until the OVERMOD message turns o .
( he more negative the signal applied to the modulator is, the more the
RF output level decreases.)
10. Wait for the power meter to settle then note the power meter reading in
able 2-25. If the power meter reads under range, record
HP 8360
Up/Dn ize CW
1
5 5
(Option 001 only)
dBm
5
dBm
synthesizer's CW frequency
1.5 V DC
(asterisk on)
(asterisk on)
(asterisk on)
GHz
5
0
<
30 dB.
Performance Tests
AM Dynamic Range
2-109