DCM300 and DCM320 Performance Verification
Handheld and Benchtop Instruments Basic Service
5
Performance Verification
This section contains procedures to verify that the DCM300 and DCM320
Digital Clamp Multimeters perform as warranted. If an instrument fails any of
the checks, it needs adjustment and or repair.
The performance verification procedures provide a valid confirmation of
instrument electrical characteristics and function under the following conditions:
H The instrument operates in an 18_ to 28_ C ambient environment with a
relative humidity of less than 75%.
H The instrument warms up for 20 minutes.
H The instrument remains fully assembled (do not remove the bottom cover).
The DCM300 and DCM320 performance verification consists of the checks
listed in Table 5.
Table 5: Performance Verification Checks
AC Current Check
AC Voltage Check
Resistance and Continuity Check
Test Equipment
The performance verification procedures use external traceable test equipment to
directly check warranted characteristics. If you substitute equipment, always
choose instruments that meet or exceed the minimum requirements specified in
Table 6.
Alternative test equipment must meet or exceed the intended minimum
requirements. If you substitute equipment, you may need to modify the
performance verification procedures.
NOTE. Before beginning the performance verification procedures, warm up the
test equipment according to the manufacturer’s recommendations.