Band 3 Adjustment - Agilent Technologies 83620A Service Manual

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106. Adjust calibration constant #562, Y F Dly erm A Hrm 2, to maximize
power for the low end of band 2.
107. Adjust calibration constant #572, Y F Dly erm B Hrm 2, to maximize
power for the high end of band 2.
108. Adjust calibration constant #208, Y M Rise; Band 2 A2, to minimize
power dropout at the start of band 2.

Band 3 Adjustment.

109. On the synthesizer, set:
START 13.5 GHz
5 5 5
STOP 20 GHz
5 5 5
CONT SWEEP TIME
5
POWER LEVEL 25
5 5
110. Decrease the synthesizer power level until the level of the entire trace on
the oscilloscope begins to drop.
111. Switch between the fastest sweep time (0 ms) and 200 ms sweep time and
check that power changes less than 2/3 division (
the appropriate rise or delay terms (steps 114 through 116) and then
repeat this step.
112. On the synthesizer, set:
SWEEP TIME 0 msec
5 5
113. a. Press several times to initiate several sweeps. Note any drop in
SINGLE
5
power.
b. Press
SINGLE R ON/O
5
note any drop in power.
c. he power loss noted in step a can be no smaller than the power loss
noted in step b. If the step a power loss is greater than the step b
power loss by 1 division (
adjustment #573 to put the A term at the high end of the peak. hen
repeat from step 111.
If the power loss in step a is
rest of \Band 3 Adjustment" and continue with \Band 4 Adjustment".
114. Adjust calibration constant #563, Y F Dly erm A Hrm 3, to maximize
power for the low end of band 3.
115. Adjust calibration constant #573, Y F Dly erm B Hrm 3, to maximize
power for the high end of band 3.
116. Adjust calibration constant #213, Y M Rise; Band 3 A3, to minimize
power dropout at the start of band 3.
HP 8360
0 msec
5 5 5
dBm
5
5
. hen press
5

1.5 dB), increase the A term of the delay
smaller than that in step b, skip the
not
Amplifier/Filter Adjustments

1 dB). If not, adjust
again (LED on) and
R ON/O
5
Adjustments 3-75