5-39
Servicing
Adjustment Procedures
Adjustment 1. Power Supply
In this procedure, you’ll adjust both the –12V and +12V supplies. Th ese sup-
plies are located on the A3 Power Supply Assembly. Because the +5V ADJ
potentiometer is not used in this instrument, it is not adjusted.
1Connect the line-power cord to the Agilent83430A’s rear panel connector.
2Turn on the Agilent 83430A.
3Measure the dc voltage between the –OUT (violet wire) and +OUT (black wire)
terminals located on the A3 assembly. Adjust the –12V ADJ potentiometer so
that the voltage measures between –5.15 Vdc and –5.20 Vdc.
4Measure the dc voltage between the +OUT (red wire) and COM (black wire)
terminals. Adjust the +12V ADJ potentiometer so that the voltage measures
between +11.8 Vdc and +12.0 Vdc.
5If any of the potentiometer were adjusted in this procedure, you must perform
the steps in “Adjustment 2. Laser Bias and Control” on page5-41.