Page 14

Testing Millivoltage (mV) Function

To verify accuracy of the mV function, do the following.

1.Connect the Calibrator to the VΩ and COM inputs on the meter.

2.Turn the rotary switch to mV.

3.Set the calibrator for the voltage from step 1 to 3 in Table 3.

4.Compare the reading on the Meter display with the display reading in Table 3.

If the display reading falls outside of the range shown in Table 3, the Meter does not meet specification.

Table 3. DC mV Test

 

Input

 

Reading

 

 

 

 

 

Step

Voltage

61-633

 

61-635

 

 

 

 

 

1

36.000mV

35.848 to 36.156

 

35.894 to 36.102

 

 

 

 

 

2

-36.000mv

-35.848 to -36.156

 

-35.894 to -36.102

 

 

 

 

 

3

360.00mV

359.08 to 360.92

 

359.58 to 360.42

 

 

 

 

 

5.Press the blue button on the Meter to toggle to AC mV function.

6.Set the calibrator for the voltage and frequency from step 1 & 2 in Table 4.

7.Compare the reading on the Meter display with the display reading in Table 4. If the display reading falls outside of the range shown in Table 4, the Meter does not meet specification.

Table 4. AC mV Test

 

Input

 

 

Reading

 

 

 

 

 

 

Step

Voltage

Frequency

61-633

 

61-635

 

 

 

 

 

 

1

360.00mV

50Hz

355.18 to 364.82

 

356.98 to 363.02

 

 

 

 

 

 

2

360.00mV

1KHz

352.30 to 367.70

 

355.90 to 364.10

 

 

 

 

 

 

Testing the PEAK HOLD Function

To verify operation of the PEAK HOLD feature, do the following.

1.Connect the Calibrator to the VΩ and COM inputs on the Meter.

2.Apply 1.0v ac rms at 60Hz from the Calibrator to the VΩ and COM inputs of the Meter.

3.Turn the rotary switch to V.

Note: The rms converter is not used in Peak Hold mode. The digital display represents the actual peak value of the input.

4.Press (PEAK H) and then (M/M/A).

5.The reading on sub-display should be within 1.441 (Max) and -1.441 (MIN).

6.Press (PEAK H) to escape.

Form Number TM61633-5

Rev 5 Dec 2006