Pulse Leveling Accuracy < 20 Ghz - Agilent Technologies 83620A Service Manual

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11. Repeat steps 7 through 10 at each synthesizer and LO frequency in
able 2-19.
12. For the HP 83620A/22A and for the HP 83623A/24A, record each worst
case risetime and falltime value from able 2-19 on the appropriate test
record.
Pulse Leveling Accuracy
13. On the pulse generator, set:
Pulse Width:
Pulse Period: 1 ms
Pulse Level:
14. On the synthesizer, press:
First synthesizer frequency in able 2-19
CW
5
0
POWER LEVEL 0
5 5
Leveling Mode Normal
ALC
5
Pulse On/Off Extrnl
MOD
5
15. On the spectrum analyzer, set the center frequency to the rst frequency in
able 2-19.
16. On the oscilloscope, set:
Channel 1:
Volts/Division
Timebase:
Time/Division
Delay Reference At left
Adjust the delay and timebase so that the pulse waveform takes up the
entire display. Adjust the oscilloscope channel 1 o set to position the top
of the pulse envelope near the center graticule.
17. On the synthesizer, turn o external pulse and set the power level to
dBm. Press:
Pulse On/Off Extrnl
0
POWER LEVEL 0.3
5 5
HP 8360
<
20 GHz
1 us
5V
dBm
5
(asterisk on)
30 mV
100 ns
(asterisk o )
dBm
5
Pulse Performance (Alternate)
0
0.3
Performance Tests 2-81