CEM DT-912, Operating Instruction

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2. Turn the rotary switch to the / •))) position.
3. Touch the test probes to the diode under test.
Forward voltage will indicate 400 to 700mV.
Reverse voltage will indicate “ I ”. Shorted devices
will indicate near 0mV. Shorted devices will
indicate near 0mV and an open device will indicate
“ I ” in both polarities.
BATTERY TEST
1. Insert the black test lead banana plug into the
negative COM jack and the red test lead banana
plug into the positive
V
jack.
2. Select the 1.5V or 9V BAT position using the
function select switch.
3. Connect the red test lead to the positive side of the
1.5V or 9V battery and the black test lead to the
negative side of the 1.5V or 9V battery.
4. Read the voltage in the display.
Good Weak Bad
9V battery: >8.2V 7.2 to 8.2V <7.2V
1.5V battery: >1.35V 1.22 to 1.35V <1.22V