Diode Test; Capacitance Measurements - Extech Instruments MN62 User Manual

DIODE TEST
1. Set the function switch to the Ω position.
2. Insert the black test lead banana plug into the negative COM
jack and the red test lead banana plug into the positive V jack.
3. Press the SELECT button to indicate and V on the display.
4. Touch the test probes to the diode under test. Forward voltage
will typically indicate 0.400 to 0.700V. Reverse voltage will
indicate "OL". Shorted devices will indicate near 0V and an open
device will indicate "OL" in both polarities.
Diode Measurement Notes
Switch OFF power to any devices on the measurement circuit
Do not input signals > 60VDC or 30VAC
CAPACITANCE MEASUREMENTS
WARNING: To avoid electric shock, disconnect power to the unit under test and discharge all
capacitors before taking any capacitance measurements. Remove the batteries and unplug the
line cords.
1. Set the rotary function switch to the Capacitance symbol position.
2. Insert the black test lead banana plug into the negative COM jack.
Insert the red test lead banana plug into the positive V jack.
3. Touch the test leads to the capacitor to be tested.
4. Read the capacitance value in the display
Capacitance Measurement Notes
The meter will display a fixed reading with no input connected, this is
the internal fixed capacitance; please use the Relative mode to null the
effect of the internal fixed capacitance (especially for low capacitance
measurements).
The display will show OL when the capacitor is short‐circuited or if the
capacitance value exceeds the maximum range of the meter.
High capacity capacitors require a longer time period to stabilize than
lower capacity devices.
To prevent damage to the instrument and personal injury, release all
residual charges to devices under test before taking measurements.
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