Display Test; Dc Voltage Test; Mv Dc Test - Fluke 76 Service

Display Test

To test the display, turn the UUT on and check whether all display segments come on as
indicated in Figure 3-4.

DC Voltage Test

1. Set the UUT function switch to V DC and connect the DC Voltage Calibrator output
to the V  and COM input terminals of the UUT.
2. Referring to Table 3-2, set the DC Voltage Calibrator for the output indicated in steps
1 through 4 only. Verify that the UUT display reading is within the limits shown.
3. Reset the source to 0V.
Step
Range
1 4V
2 4V
3 4V
4 40V
5 400V
6 600V

mV DC Test

1. Set the UUT function switch to mV DC, and connect the DC Voltage Calibrator
output to the V  and COM input terminals of the UUT.
For autorange, press and hold the push button for 1 second.
2. Referring to Table 3-3, set the DC Voltage Calibrator to the voltage indicated in the
steps. Verify that the UUT display reading is within the limits shown.
3. Reset the source to 0V.
_ +
0 2001 400
_ +
Figure 3-4. Display
Table 3-2. DC Voltage Test
Input
Voltage
short
+3.5V
-3.5V
+35V
+350V
+600V
m
n F
H
mV AC
mV DC
Mk Hz
2 600 3600 4100
mV
Display Reading
0 to .001 V DC
3.488 to 3.512V DC
-3.488 to -3.512V DC
(and within 2 counts
of +3.5V reading)
34.88 to 35.12V DC
348.8 to 351.2V DC
597 to 603V DC
Note
Maintenance
3
Performance Tests
3-13.
l9f.eps
3-14.
3-15.
3-9