LIMIT DM 620 Manual Del Usuario página 10

2.1 Insert the red test lead into the
GB
2.2 Turn the function dial to the
2.3 Short-press the
2.4 Connect the test leads to the measured load or power supply in parallel.
2.5 Read the voltage value on the display (if the voltage is >1000 V, the red indicator light will be on
and the buzzer will sound an alarm).
3. AC/DC millivolt voltage measurement (P 5)
DM 620
USB
3.1 Insert the red test lead into the
3.2 Turn the function dial to the
3.3 Short press the
3.4 Connect the test leads in parallel with the measured load or power supply.
3.5 Read the voltage value on the display.
3.6 When measuring AC millivolt voltage, short-press the
ratio of the measured voltage.
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 AC mV range 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%).
• The input impedance of the DC mV range is infinite (about 1 GΩ), and it does not attenuate when
measuring weak signals, so the measurement accuracy is high. When the test leads are open, there
may be a value on the screen, but this is normal and will not affect the measuring result.
• Frequency measurement at 60 mV range (AC voltage) is for reference only.
8
position.
button to switch to DC voltage measurement if required.
P 5
position.
button to switch to AC/DC millivolt voltage measurement if required.
jack, and the black test lead into the COM jack.
jack, and the black test lead into the COM jack.
button to display the frequency/duty
USB