When testing a diode with a digital multimeter in diode test mode, "OL" usually means: (1) Open Circuit or Reverse Bias: The diode is reverse-biased (positive probe on the cathode and negative probe on the anode). In this case, the diode blocks current flow, and the multimeter shows "OL" to indicate no conduction. or (2) Failed (Open) Diode: If "OL" appears in both directions (forward and reverse bias), the diode may be defective and open, meaning it does not conduct current in either direction.
When testing a diode with a digital multimeter in diode test mode, "OL" usually means:
(1) Open Circuit or Reverse Bias: The diode is reverse-biased (positive probe on the cathode and negative probe on the anode). In this case, the diode blocks current flow, and the multimeter shows "OL" to indicate no conduction.
or
(2) Failed (Open) Diode: If "OL" appears in both directions (forward and reverse bias), the diode may be defective and open, meaning it does not conduct current in either direction.
how do u measure amperage with it?