HP 83522A - ALC Gain Adjustment

Adjustments Model 83522A
ADJUSTMENTS
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5-23. POWER METER LEVELING CALIBRATION (Cont'd)
2. Set 83522A PO'WER LEVEL, to +5 dBm. Set power meter WaE switch to 0. Adjust
83522A POWER LEVEL , if necessary, to obtain a meter reading of -5.
3. Press 83522A 'maG&e mode. Adjust 83522A front panel
knob to return the
power meter needle to its previous position at -5.
4. Increase the
83522A
by exactly 5.0 dBm. Adjust A4R9 "PM" (Figure
5-24) for a power me
3522A front panel power indication should be
approximately
+ 10 dBm).
5. Iterate between power level settings of +5 and +10 dBm, adjusting the
knob
and
A4R9 respectively, until no further adjustment is necessary.
PM (POWER METER)
A4 R9
Figure 5-24. Power Meter Leveling Adjustment Location
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5-24. ALC GAIN ADJUSTMENT
NOTE
Complete adjustment of the leveling loop requires several procedures to be
performed in the order prescribed, from Paragraph
5-20 through 5-24.
Deviation from this routine may cause improper leveling andlor flatness
problems.
REFERENCE:
Performance test: 83 50A Paragraph 4- 14.
Service Sheet: A4