Section 2: Performance verification
Model DMM7510 7½ Digit Graphical Sampling Multimeter Calibration Manual
2-10
DMM7510-905-01 Rev. A / April 2015
Test considerations
When performing the 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 properly warmed up for 90 minutes and is connected to the
Model DMM7510 input/output terminals.
•
Ensure that the correct Model DMM7510 terminals are selected with the TERMINALS
FRONT/REAR button.
•
Be sure the test equipment is set up for the proper function and range.
•
Do not connect test equipment to the Model DMM7510 through a scanner, multiplexer, or other
switching equipment.
Ensure Auto Calibration has been performed with 30 days and that the Temperature Difference is
less than ±5 °C. To check Auto Calibration, press the
MENU
key and select
Calibration
. If either
time is more than 30 days or the Temperature Difference is more than ±5 °C, run Auto Calibration
before verifying the Model DMM7510.
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 verification
The following topics describe verification procedures that are done with connections attached to the
front-panel terminals.
DC voltage verification
The maximum input voltage between INPUT HI and INPUT LO is 1000 V
peak
. 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.