Fluke 5790B - Page 58

5790B
Service Manual
3-20
VOLTAGE (NOMINAL)
FREQUENCY
792A CORRECTION (PPM)
5700A ERROR DISPLAY FROM TABLE 3-2, POSITIVE
5700A ERROR DISPLAY FROM TABLE 3-2, NEGATIVE
+DC
792A DMM READING
DC
792
I+DCI + I-DCI
2
+
=
=
DC
792
AC
792
AC
792
AC
MEAS =
AC
MEAS
DC
792
NOMINAL
.
-DC
792 CORR
10
6
elu029.eps
Figure 3-7. Worksheet for 60 mV to 600 mV AC Calibration Points
Proceed as follows to perform ac calibration of the main input, which must always
be preceded by dc calibration:
1. Set up the equipment as shown in Figure 3-8. Connect the 792A without
the 1000 V range resistor first.