Capacitance Test; Continuity Test; Dc And Ac Current Test - Fluke 76 Service

76
Service

Capacitance Test

1. Set the UUT function switch to
2. Referring to Table 3-7, set the Decade Capacitor for the output indicated in the steps.
Step
1
2
3
4*
* Conducting performance tests of the 400 , 4k , 40k and 10 F ranges verifies that the discrete and
integrated circuitry needed to support the other capacitance ranges are working within specifications.
Therefore, these tests indirectly verify that the meter will meet specification in the 10 F, 100 F, 1000 F,
and 10,000 F ranges.

Continuity Test

1. Set the UUT function switch to 40 ( ).
2. Referring to Table 3-8, apply a short as indicated. Verify that the UUT display and
Step
1
2

DC and AC Current Test

1. Set the UUT Function switch to amps.
2. Set the output of the Current Calibrator to standby and connect it to the 40 mA and
3. Set the Current Calibrator to the output shown in Table 3-9. Verify that the UUT
3-12
the V  and COM input terminals of the UUT.
To enter capacitance, press and hold the push button for 2 seconds.
Verify that the UUT display reading is within the limits shown.
Table 3-7. Capacitance Test
Range
100 nF
1000 nF
1000 nF
10 F
beeper indicate as shown.
Range Input Resistance
400
400
Common input terminals of the UUT.
display\reading is within the limits shown
 and connect the Decade Capacitor output to
Note
Input
Capacitance
open, no test leads
open, no test leads
800 nF
1.1 F
Table 3-8. Continuity Test
short
open
3-19.
Display Readings
0 to 0.50 nF
0 to 0.5 n
784.6 to 815.4 nF
1.077 to 1.123 F
3-20.
Display Reading
tone
OL
3-21.