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Section 2: Performance verification
Model DMM6500 6½-Digit Multimeter with Scanning Calibration and Adjustment Manual
2-10
DMM6500-905-01 Rev. A/July 2018
Verify the AC voltage 100 mV range
Input
Frequency
Lower limit
Upper limit
0.1
3.0E+01
9.9910E-02
1.00090E-01
0.1
1.0E+03
9.9910E-02
1.00090E-01
0.1
5.0E+04
9.9830E-02
1.00170E-01
0.1
1.0E+05
9.9320E-02
1.00680E-01
Verify the AC voltage 1 V range
Input
Frequency
Lower limit
Upper limit
1
3.0E+01
9.991000E-01
1.00
1
1.0E+03
9.991000E-01
1.00
1
5.0E+04
9.983000E-01
1.00
1
1.0E+05
9.93200E-01
1.00
Verify the AC voltage 10 V range
Input
Frequency
Lower limit
Upper limit
10
3.0E+01
9.00
1.01
10
1.0E+03
9.00
1.01
10
5.0E+04
9.00
1.01
10
1.0E+05
9.00
1.01
Verify the AC voltage 100 V range
Input
Frequency
Lower limit
Upper limit
100
3.0E+01
9.01
1.02
100
1.0E+03
9.01
1.02
100
5.0E+04
9.01
1.02
100
1.0E+05
9.01
1.02
Verify AC voltage accuracy for the 750 V range
Use shielded low capacitance cabling. For the 750 V range, avoid cable capacitances of >150 pF.
Excessive capacitance may result in additional load regulation uncertainties and could cause the
calibrator output to open (go into standby).
To verify AC voltage accuracy for the 750 V range:
1. Put the calibrator in Standby.
2. Connect the DMM6500 HI and LO INPUT connectors to the calibrator as shown in the following
figure.
3. For 750 V at 50 kHz and 100 kHz outputs, connect the calibrator to the Fluke 5725A amplifier.