Fluke 80 Series III Service Information

Multimeters
Performance Tests
17
Testing the Frequency Function
To verify the accuracy of the Meter’s frequency function, do the following:
1. Connect the Calibrator to the
z and COM inputs on the Meter.
Note
The accuracy of the Calibrator’s frequency function must be appropriate
for the specified accuracy of the Meter.
2. With the Meter in the 400 mV ac range, press F to enter the Frequency
Counter mode.
3. Set the Function Generator for the sine wave voltage and frequency called for in step
1 of Table 5.
4. Compare the reading on the Meter display with the display reading shown in Table
5.
5. If the display reading falls outside of the range shown in Table 5, the Meter does not
meet specification.
6. Set the Function Generator for the sine wave voltage and frequency called for in step
2 of Table 5 and compare the reading on the Meter display with the display reading
shown in Table 5.
Table 5. Frequency Test
Sine Wave Input
Display Reading
Step Voltage Frequency
83/85/87
1
2
150 mV rms
150 mV rms
19.000 kHz
190.00 kHz
18.998 to 19.002
189.98 to 190.02
Testing the Frequency Sensitivity and Trigger Level
To verify the counter sensitivity and trigger levels for all frequency modes and ranges,
do the following. (For any function and range, the sensitivity and trigger level is the
same in both frequency and duty cycle modes.)
1. Connect the Calibrator to the
z and COM inputs on the Meter.
2. Put the Meter in the 4 V ac range, and press F.
3. Apply the input from step 1 of Table 6, and compare the reading on the Meter
display with the display reading in Table 6.
4. Put the Meter in the 4 V ac range, and press F.
5. Apply the input from step 2 of Table 6, and compare the reading on the Meter
display with the display reading in Table 6.
If the display reading falls outside of the range shown in Table 6, the Meter does not
meet specification.
6. On the Meter, press Kto enter the 40 V dc range.
7. Apply the input for step 3 and compare the reading on the Meter display with the
display reading in Table 6.
8. Repeat step 7 the remaining inputs shown in Table 6.

Fluke 80 Series III Specifications

General

Brand	Fluke
Model	80 Series III
Category	Multimeter
Language	English