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6.8. Checking diodes
This function lets you check diodes and other
semiconductors for opens and shorts. It also lets you
determine the forward voltage for diodes. You can use this
function when you need to match diodes.
1. Set the rotary selector to the diode position.
2. Press select key until diode symbol is shown
3. Plug the black test lead into your meter’s COM terminal
and the red test lead into your meter’s V//Hz/-
terminal.
4. Connect the test leads to the diode you want to check
and note the meter reading.
Notes:
* If the display shows a value for example 0.2 for a
germanium diode or 0.5 for a silicon diode, reverse the
diode. If the meter indicates and overrange, the diode is
good. The displayed number is the diode’s actual
forward voltage (up to 2.0V).
* If the display indicates an overrange condition, reverse
the polarity of the connection. If the display shows a
value, the device is good. The displayed value is the
component’s actual forward voltage (up to 2.V). If the
display still indicates an overrange condition, the device
is open.
* If the display shows a value both before and after you re-
verse the polarity, the device is shorted.
When you connect the diode to the meter and the meter
displays the devices forward voltage, the red test lead is
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