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Performance Tests
The following performance tests verify the complete operability of the meter and check the accuracy of each meter function against the meter’s specifications.
Accuracy specifications are valid for a period of one year after calibration, when measured at an operating temperature of 18ºC to 28ºC and at a maximum of 80% relative humidity.
To perform the following tests, it is not necessary to open the case; no adjustments are necessary. Merely make the required connections, apply the designated inputs, and determine if the reading on the meter display falls within the acceptable range indicated.
If the meter fails any of these tests, it needs calibration adjustment or repair.
Testing the Voltage Function
To verify accuracy in the AC voltage ranges, do the following:
1.Connect the calibrator to the VΩ and COM inputs on the meter.
2.Set the calibrator for the voltage and frequency from step 1 to 6 in Table 1.
3.Compare the reading on the meter display with the display reading shown in Table 1.
4.If the display reading falls outside of the range shown in Table 1, the meter does not meet specification.
Table 1 AC Voltage Test:
Step | Input | Frequency | Reading |
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1 | 3V | 50Hz | 0 to 6 |
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2 | 3V | 500Hz | 0 to 6 |
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3 | 100V | 50Hz | 95 to 105 |
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4 | 100V | 500Hz | 95 to 105 |
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5 | 600V | 50Hz | 588 to 612 |
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6 | 600V | 500Hz | 588 to 612 |
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5.Turn the rotary switch to “V
” position.
6.Set the calibration for the voltage from step 1 to 3 in Table 2.
7.Compare the reading on the meter display with the display reading shown in Table 2.
8.If the display reading falls outside of the range shown in Table 2, the meter does not meet specification.
Table 2 DC Voltage Test:
Step | Input | Reading |
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1 | 3V | 1 to 5 |
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2 | 100V | 97 to 103 |
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3 | 600V | 592 to 608 |
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Form number TM61095 | Rev 2 September 2002 |