• When measu
r
ing current, the Meter’s internal shunt resistors
develop a voltage across the meter’s terminals called “burden
voltage”. This voltage drop may affect precision circuits or
measurements.
Follow these steps to measure DC (or AC) Amps.
1. Set function and range switch to the desired DC A (or AC A )range.
If you do not know the value of the current to be measured, always
start with the highest range and reduce the setting as required to
obtain a satisfactory reading.
2. Plug the red test lead into the “mA
µ
A” input te
r
minal (if the10A
range is being used, plug the red lead into the “A” input terminal)
and the black lead into the “COM” input terminal of the instrument.
3. Disconnect the power from the circuit to be tested.
4. Connect the test leads in series to the circuit to be tested.
5. Reapply power to the circuit, the measured current will appear on
the display of the instrument.
6. Disconnect power to the circuit before removing the test leads from
the circuit.
20 21
5.1 General Maintenance
WARNING!
REPAIRS OR SERVICING NOT COVERED IN THIS MANUAL
SHOULD ONLY BE PERFORMED BY QUALIFIED PERSONNEL. TO
AVOID ELECTRICAL SHOCK, DO NOT SERVICE UNLESS YOU
ARE QUALIFIED TO DO SO.
Periodically wipe the case with a damp cloth and detergent; do not use
abrasives or solvents. Water, dirt, or contamination in the A or mAµA
input terminals may harm this Meter.
Calibrate this Meter once a year to maintain its performance
specifications.
5.2 Battery Replacement
The Meter uses a 9V battery (NEDA 1604 or IEC 6F22). To replace the
battery, remove the two screws of the battery compartment from the
back of the Meter and lift off the cover of the compartment. Replace
the battery. Reattach the battery compartment to the back of the Meter,
and reinstall the screws.
5. MAINTENANCE AND REPLACEABLE PARTS
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