CEM DT-337 User Manual

9
3. Press the MODE button until “ “ appears in the
display.
4. Touch the test probes to the diode under test. Forward
voltage will indicate 0.4V to 0.7V. Reverse voltage will
indicate “OL”. Shorted devices will indicate near 0mV
and an open device will indicate “OL” in both polarities.
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 cap 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
Frequency or % duty cycle measurements
1. Set the rotary function switch to the “Hz/%”
position.
2. Insert the black lead banana plug into the negative
COM jack and the red test lead banana plug into
the positive V jack.
3. Select Hz or % duty with the Hz/% button.
4. Touch the test probe tips to the circuit under test.
5. Read the frequency on the display.
Red Black Black Red
Probe Probe Probe Probe
Forward test Reverse test

CEM DT-337 Specifications

General

Brand	CEM
Model	DT-337
Category	Measuring Instruments
Language	English