MA200 Datasheet, PDF (7/8 Pages) Extech Instruments Corporation. – 400A AC Clamp Meter

Diode Test
1. Turn the rotary 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 (VΩ) jack.
3. Push the mode button to indicate on the display.
4. Touch the test probes to the diode under test. Forward
voltage will indicate 400 to 700mV. Reverse voltage will
indicate “OL”. Shorted devices will indicate near 0mV.
Shorted devices will indicate near 0mV and an open
device will indicate “OL” in both polarities.
Data Hold
To freeze the LCD meter reading, press the data hold button. The data hold button is
located on the left side of the meter (bottom button). While data hold is active, the HOLD
display icon appears on the LCD. Press the data hold button again to return to normal
operation.
MAX Hold
To hold the highest reading on the LCD, press the MAX button. The max hold button is
located on the left side of the meter (top button). While data hold is active, the MAX display
icon appears on the LCD. The meter reading will not change as readings change, rather it
will only display the highest reading encountered since the max hold button was pressed.
Press the max hold button again to return to normal operation.
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MA200 Version 1.4 06/06