Benning MM 7-2, Operating Manual

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Operation
5.6 Capacitance measurement or diode testing
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5.6 Capacitance measurement or diode testing
Requirements
• Please observe the requirements for measuring [ } page 32].
• Approved safety measuring lines
• Capacitance ranges [
}
page 30] and diode test [
}
page 29]
NOTICE
Capacitors not discharged
Measuring the capacitance at capacitors that are not fully discharged can damage the device.
• Discharge the capacitors completely before measuring the capacitance.
• Do not apply any voltage to the jacks of the device during the capacitance measurement.
Figure 12: Capacitance measurement or diode testing
Procedure
1. Set the rotary switch of the device to switch position “capacitance measurement”.
2. Connect the safety measuring lines to the device [
}
page 33].
3. Press the blue “Function” key to set the function “Capacitance measurement” (“F” symbol)
or “Diode test” (“ “ symbol).
4. Bring the safety measuring lines into contact with the discharged capacitor or the diode –
observing correct polarity – and read the measured value on the digital display.
Notes on diode testing:
– Standard Si diode applied in forward direction: A forward voltage from 0.4 to 0.8 V is
displayed.
“000”: indicates a short circuit inside the diode.
“OL”: indicates an interruption inside the diode.
– Diode applied in reverse direction: “OL” is displayed. In case of defective diodes, “000”
or other values will be displayed.