Reference
8
CDM250 User Manual
5. Determine the highest anticipated voltage, and push in the
corresponding range button. When the voltage is unknown, select
the highest range.
6. Push the POWER button to the ON position.
NOTE
. Voltage readings are taken in parallel with the component or
device being measured.
7. Connect the test leads, and read the displayed value.
NOTE
. Remove the red test lead from the circuit or component being
tested before changing ranges.
Measuring AC or DC Current
1. Connect the black test lead to the black COM jack.
2. For current up to 2 A, connect the red test lead to the white 2A
jack. For current between 2 A and 10 A, connect the red test lead
to the white 10A UNFUSED jack.
CAUTION.
The 10 A UNFUSED jack is not protected. Excess current
may damage the instrument.
3. To measure alternating current (AC), set the AC/DC button to the
in position. To measure direct current (DC), set the AC/DC
button to the out position.
4. Push the A (amperes) button in.
5. Determine the highest anticipated current, and push in the
corresponding range button. When the current value is unknown,
start at the highest range.