Ac Voltage Test; Frequency Test; Mv Dc Voltage Test - Fluke 76 Service

76
Service
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AC Voltage Test

Injury hazard. Connect the ground/common/low side of the AC
calibrator to common on the UUT.
1. Set the UUT function switch to V AC, and connect the AC Calibrator to the V 
2. Set the AC Calibrator for the output given in Table 3-4, and verify that the UUT
When the input is open in the V AC function, it is normal for the meters to
read some counts on the display. This is due to ac pickup in the ac amplifier
when the ac amplifier is unterminated.
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9

Frequency Test

1. Set the UUT function switch to Hz and connect the Function Generator output to the
2. Referring to Table 3-5, set the Function Generator for the output indicated in the
3-10
Table 3-3. mV DC Voltage Test
Input
Range Voltage
400 MV +350 MV
40 MV SHORT
40 MV +35 MV
40 mV -35 mV
and COM input terminals.
display reading is within the limits shown.
Range
400 mV 20 mV
400 mV 350 mV
400 mV 350 mV
4V 200 mV
4V 3.5V
4V 3.5V
40V 35V
400V 350V
600V 600V
V  and COM input terminals of the UUT.
steps. Verify that the UUT display reading is within the limits shown.
348.8 To 351.2 MV DC
0 To
34.84 To 35.16 MV DC
-34.84 to -35.16 mV DC
Warning
Note
Table 3-4. AC Voltage Test
Input
Voltage Freq.
100 Hz
100 Hz
1 kHz
100 Hz
100 Hz
1 kHz
1 kHz
1 kHz
1 kHz
Display Reading
.05 MV DC
Display Reading
19.2 to 20.8 mV AC
343.0 to 357.0 mV AC
343.0 to 357.0 mV AC
.194 to .206V AC
3.432 to 3.569V AC
3.432 to 3.569V AC
34.46 to 35.55V AC
344.6 to 355.5V AC
589 to 611V AC
3-16.
3-17.