LIMIT DCM 4 Manual Del Operador página 10

2. DC current measurement (Picture 4a)
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2.1 Turn the function dial to the A
2.2 Press the trigger to open the clamp jaws, and fully enclose one conductor (only one conductor can
be measured at a time). For optimum results, centre the conductor within the jaws.
Note:
• The current must be measured within 0°C~40°C. For DC current measurement, if the reading is
positive, the direction of current is from top to bottom (from panel to cover). Do not release the
trigger suddenly, as the impact will briefly change the reading.
• To ensure measurement accuracy, centre the conductor within the jaws. Otherwise, there may be a
±1.0% additional error in reading.
• After DC current (especially large current) measurement, the open circuit base may be too large.
Please perform an AC current test to eliminate the residual magnetic signal generated by the jaws.
3. Related measurement of AC voltage and LPF ACV (Picture 5)
3.1 AC voltage measurement
1) Insert the red test lead into the
2) Turn the function dial to V~ position.
3) Short press the SELECT button to switch to AC voltage measurement if required, and connect the
test leads with the measured load or power supply in parallel.
3.2 Voltage frequency measurement
1) When the function dial is set for AC voltage, short press the Hz/INRUSH button to enter the
frequency measurement mode.
2) Short press the Hz/INRUSH button again to exit frequency measurement mode.
3.3 LPF ACV measurement
1) When the function dial is in the AC voltage position, long press SELECT button to enable LPF
ACV function. LPF can measure combined sine wave signals produced by inverters and variable
frequency drives, as shown below.
2) After enabling the LPF ACV function, short press the Hz/INRUSH button to enter the frequency
measurement mode.
3) Short press the Hz/INRUSH button again to exit the frequency measurement mode.
Note:
• Do not input voltage above 1000 V. Although it is possible to measure higher voltage, it may
damage the meter.
• Exercise caution to avoid electric shock when measuring high voltage.
• After completing the measurement, disconnect the test leads from the circuit being tested.
• When the measured voltage is above 30 V, the LCD will display the high voltage alarm prompt "
8
position.
jack and the black test lead into the COM jack.
" .