Agilent Technologies HP 8719D Service Manual page 131

Reference Assembly VCO Tune Adjustment
Required Equipment and 'lbols
Extender board, large . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . part of tool kit 08720-60004
Analyzer warnvup time: 30
This a4@stment centers the reference assembly VCO (voltage controlled
oscillator) in its tuning range.
1. Switch off the analyzer.
2.
Remove the instrument top cover.
3. If the VCO TUNE adjustment screw is not accessible from the top of the Al2
assembly, perform the following step. If the screw is accessible, continue
with step 4.
In order to access the VCO !l'UNE adjustment screw on the Al2 assembly,
n
install the Al2 assembly onto the extender board. Use SMB extension
cables as required (the EXT REF cable need not be reconnected now).
Tulle.
5. Press
Adjustments
and Correction Constants
343