Benning CM 2-1, Operating Manual

Page: 33 / 44

Operation
5.8 Diode testing
5191 / 07/2021 en BENNING CM 2-1 33
5.8 Diode testing
Requirements
• Please observe the requirements for measuring [ } page 26].
• Approved safety measuring lines
• Diode test [
}
page 25]
• Please observe the figure for diode testing [ } page 31].
Procedure
1. Set the rotary switch of the device to switch position “ ”.
2. Connect the safety measuring lines to the device [
}
page 27].
3. Press the “AC HFR / DCA ZERO” key to set the desired “Diode test” function (“ ” symbol).
4. Bring the safety measuring lines into contact with the measuring points and read the
measured value on the digital display.
– 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.
5.9 Voltage indicator
WARNING
Incorrect use of the function
Danger to life or serious injury is possible due to contact with high electric voltage if the “Voltage
indicator” function is used incorrectly.
• Please observe that a dangerous contact voltage might be applied even if it is not indicated
by a visual or acoustic signal.
• Do not use the “Voltage indicator” function to test for the absence of voltage.