LIMIT DM 620 Bedienungsanleitung Seite 9

1. AC voltage measurement (P 3)
DM 620
USB
P 3
1.1 Insert the red test lead into the
1.2 Turn the function dial to the
1.3 Short-press the
1.4 Connect the test leads in parallel with the measured load or power supply.
1.5 Read the voltage value on the display (if the voltage is >1000 V, the red indicator light will be lit
and the buzzer will sound an alarm).
1.6 Short-press the
USB
Caution:
• Do not input a voltage over 1000 V or it may damage the meter.
• Take care to avoid electric shock when measuring high voltages.
• After completing the measurement, disconnect the test leads from the circuit under test.
• Before each use, verify meter operation by measuring a known voltage.
• The input impedance of the meter is about 10 MΩ. The effect of this load may cause measurement
errors in high-impedance circuits. In most cases, if the impedance of the circuit is below 10 kΩ, the
error can be ignored (≤0.1%).
2. DC voltage measurement (P 4)
DM 620
USB
P 4
jack, and the black test lead into the COM jack.
position.
button to switch to AC voltage measurement.
button to display the frequency/duty ratio of the measured voltage.
GB
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