Tektronix KEITHLEY DMM6500, Calibration Manual

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Section 2: Performance verification DMM6500 6½-Digit Multimeter with Scanning Calibration and Adjustment Manual
2-12 DMM6500-905-01 Rev. E June 2021
Verify the ac voltage 100 mV range
Nominal value Frequency Lower limit Upper limit
0.1 20 Hz 99.91 100.09
0.1 1 kHz 99.91 100.09
0.1 50 kHz 99.83 100.17
0.1 100 kHz 99.32 100.68
Verify the ac voltage 1 V range
Nominal value Frequency Lower limit Upper limit
1 20 Hz .9991 1.0009
1 1 kHz .9991 1.0009
1 50 kHz .9983 1.0017
1 100 kHz .9932 1.0068
Verify the ac voltage 10 V range
Nominal value Frequency Lower limit Upper limit
10 20 Hz 9.991 10.009
10 1 kHz 9.991 10.009
10 50 kHz 9.983 10.017
10 100 kHz 9.932 10.068
Verify the ac voltage 100 V range
Nominal value Frequency Lower limit Upper limit
100 20 Hz 99.910 100.09
100 1 kHz 99.910 100.09
100 50 kHz 99.830 100.17
100 100 kHz 99.320 100.68
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).