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Section 2: Performance verification
Test considerations
When performing the calibration verification procedures:
•
Be sure to restore factory front-panel defaults. From the front panel, select the MENU key, select
Info/Manage, and select System Reset.
•
Make sure that the test equipment is warmed up for the time recommended by the manufacturer
and is connected to the DMM6500 input/output terminals.
•
Make sure that the correct DMM6500 terminals are selected with the TERMINALS FRONT/REAR
switch.
•
Make sure the test equipment is set up for the proper function and range.
•
Do not connect test equipment to the DMM6500 through a scanner, multiplexer, or other
switching equipment.
The front and rear terminals of the instrument are rated for connection to circuits rated
Measurement Category II up to 300 V, as described in International Electrotechnical
Commission (IEC) Standard IEC 60664. This range must not be exceeded. Do not connect the
instrument terminals to CAT III or CAT IV circuits. Connection of the instrument terminals to
circuits higher than CAT II can cause damage to the equipment and severe personal injury.
Front-panel calibration verification
The following topics describe verification procedures that are done with connections attached to the
terminals on the DMM6500 front panel.
DC voltage verification
The maximum input voltage between INPUT HI and INPUT LO is 1000 VDC and 750 VAC.
Exceeding this value may create a shock hazard.
The maximum common-mode voltage (the voltage between INPUT LO and chassis ground) is
500 V
. Exceeding this value may cause a breakdown in insulation that can create a shock
PEAK
hazard.
2-6
DMM6500 6½-Digit Multimeter with Scanning Calibration and Adjustment Manual
DMM6500-905-01 Rev. E June 2021
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