Resistance Measurement - Wetekom EM-3201A Bedienungsanleitung

2. Connect the red measurement cable to the V/Ω-Input (9) and the black
measurement cable to the COM-Input (8).
3. Connect the measurement cables to the component to be measured
and read the result on the LCD display.
Notice:
• Connect the red measuring cable to the anode of the Diode (Diode end
without ring mark) and the black measuring cable to the cathode.
• If a value of up to 3 V is displayed, the component is functional in forward
direction. The forward voltage is displayed. If overflow "1" is displayed, the
diode is defective.
• Now turn around the diode (red + to the cathode and black - to the anode).
If overflow "1" is displayed, the diode correctly blocks. It is functional in
reverse direction. If the unit displays any voltage, the diode is defective.

Resistance Measurement

Important!
• Do not perform resistance measurements on voltage-carrying components
or circuits.
• Never connect the measurement cables to the power source when using
the unit to carry out resistance measurements. This may damage the
device.
• To avoid incorrect results, make sure that capacitors are discharged before
measurements are taken. This is because resistance measurements are
based on a comparison between a reference voltage and a known
reference resistance value.
Measuring Procedure
1. Set the rotary switch (4) to the position required for resistance
measurement (Ω range (200 Ω - 20 MΩ)).
2. Connect the red measuring cable to the V/Ω/
black measuring cable to the COM input (8).
Taking Measurements
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input (9) and the