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DVM4200
24.06.2015 ©Velleman nv
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capacitors are completely depleted.
7.4 Diode measurements
Do not perform diode measurements on live circuits.
Connect the red test lead to the "VΩ " jack and the black lead to the "COM"
jack.
Set the rotary switch to Ω .
Press the SELECT button to select diode test .
Connect the red test probe to the anode of the diode and the black test probe to
the cathode.
The meter shows the forward voltage drop of the diode. When the diode is
connected with a reversed polarity, the display shows “OL”.
Notes:
o Never perform diode measurements on a live circuit and make sure all
capacitors are completely depleted.
o Measuring diodes that are part of a circuit might produce faulty results.
Consider unmounting from the circuit.
7.5 Capacitance measurements
Do not perform capacitance measurements on live circuits.
Connect the red test lead to the "VΩ " jack and the black lead to the "COM"
jack.
Set the rotary switch to .
Press the RANGE button to manually select the range.
Connect the test probes to the capacitor and read its value from the display.
Notes:
o It takes a few seconds before the meter shows the result. This is normal
behavior.
o To increase accuracy when measuring low capacitance values (<660nF), first
hold the tips of the measuring probes together to determine the capacitance
value of the test leads. Subtract this value from the measured value of the
circuit.
o Never perform capacitance measurements on a live circuit and make sure all
capacitors are completely depleted.
7.6 Frequency measurements
Do not perform frequency measurements in circuits with voltages >
1000V.
Always be careful when working with voltages above 60Vdc or 30Vac rms.
Keep your fingers behind the probe barriers at all times during
measurement. Do not touch unused terminals when the meter is linked to a
circuit which is being tested.
Connect the red test lead to the "VΩ " jack and the black lead to the "COM"
jack.
Set the rotary switch to Hz.
Press the RANGE button to manually select the range.
Connect the test probes to the circuit and read the measured value from the LCD.
Note:
o Use a shielded cable for measuring small signals in a noisy environment.
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