HP 8559A Operation And Service Manual page 172

ADJUSTMENTS
5-30. FREQUENCY DISPLAY ADJUSTMENTS (Cont'd)
PROCEDURE:
Allow one-half hour warmup time of equipment with analyzer connected to mainframe with extender
cable.
Jumper A8TP5 DPM to ground.
Set front-panel FREQUENCY BAND GHz to Band 1 (.01- 3).
Connect DVM to AlA2TPl DPMA. AlA2TPl is located below the board and is accessible through cut-
out in left side gusset.
Adjust A8R61 DPM ZERO for DVM indication of 0.000 Vdc.
Adjust AlA2R29 OFFSET for front-panel FREQUENCY GHz indication of 0.000.
Remove jumper from A8TP5 to ground.
Select Band 6 (12.1 21) on analyzer.
-
Adjust front-panel TUNING control for DVM indication of - 4.000 Vdc.
Adjust AlA2R28 GAIN for front-panel FREQUENCY indication of 20.000.
ADJUSTMENTS
MODEL 8559A