Keithley DMM6500 Calibration Manual

Section 2: Performance verification Model DMM6500 6½-Digit Multimeter with Scanning Calibration and Adjustment Manual
2-8 DMM6500-905-01 Rev. A/July 2018
Verify the DC voltage 10 V range
Description
Verification point
Lower limit
Upper limit
Full scale (+)
1.000000E+01
9.99970E+00
1.000030E+01
Half scale (+)
5.00000E+00
4.99985E+00
5.00018E+00
Half scale (–)
–5.00000E+00
–5.00018E+00
–4.99985E+00
Full scale (–)
–1.000000E+01
–1.000030E+01
–9.99970E+00
Verify the DC voltage 100 V range
The information in this section is intended for qualified service personnel only. Do not
attempt these procedures unless you are qualified to do so. Some of these procedures may
expose you to hazardous voltages, which could cause personal injury or death if contacted.
Use appropriate safety precautions when working with hazardous voltages.
Description
Verification point
Lower limit
Upper limit
Full scale (+)
1.000000E+02
9.999540E+01
1.0000460E+02
Half scale (+)
5.000000E+01
4.999685E+01
5.000315E+01
Half scale (–)
–5.0000000E+01
–5.000315E+01
–4.999685E+01
Full scale (–)
–1.000000E+02
–1.0000460E+02
–9.999540E+01
Verify the DC voltage 1000 V range
Description
Verification point
Lower limit
Upper limit
Full scale (+)
1.000000E+03
9.99931E+02
1.000069E+03
Half scale (+)
5.00000+02
4.99974E+02
5.00026E+02
Half scale (–)
–5.00000+02
–5.00026E+02
–4.99974E+02
Full scale (–)
–1.000000E+03
–1.000069E+03
–9.99931E+02
AC voltage verification
To verify AC voltage accuracy:
• For the 100 mV to 100 V ranges, apply accurate voltages from the calibrator to the DMM6500
front-panel terminals.
• For the 750 V range, connect the Fluke 5725A Amplifier to the calibrator. Apply accurate voltages
from the calibrator terminals to the terminals on the front panel of the DMM6500.
• Verify that the displayed readings are within specified limits.
Use the values in the tables following the steps below to verify the performance of the DMM6500.
Actual values depend on the published specifications (see Example reading limit calculation (on page
2-4)).
The maximum input voltage between INPUT HI and INPUT LO is 750 V DC. Exceeding this
value may create a shock hazard.
The maximum common-mode voltage (the voltage between INPUT LO and chassis ground) is
500 V
PEAK
. Exceeding this value may cause a breakdown in insulation that can create a shock
hazard.

Keithley DMM6500 Specifications

General

Brand	Keithley
Model	DMM6500
Category	Multimeter
Language	English