HP 54501A - DAC Reference Adjustment

4-13 . DAC Reference
Adjustment
Equipment Required
:
Digital Multimeter (DVM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.
.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HP 3478A
Procedure :
1 .

Invoke SERVICE MENU by
first pressing front-panel UTIL key and then selecting service
menu .
2 .

Select
cal select 2
with
menu softkey .
3 .

Set dac output to
high adjust .
4 .

Connect DVM to rear
panel DC Calibrator Output .
HP 54501A ADJUSTMENTS
5 .

Adjust System
Board Assembly R723 for DVM indication of 5
.0000 V . Refer to figure 4-4 for
adjustment
location .
6 .

Set cal
select to low view .
7 .

Measure V1 to four decimal places, 0 .

volts .
8 .

Set dac output to
high
adjust
.
9 .

Adjust System Board
Assembly R723 for DVM indication of 5 .000V PLUS V1
from
step
7 .
10 .

Select
exit menu softkey and oscilloscope will return to
Utility menu .