Battery Voltage Test; Ac / Dc Current Measurements - Extech Instruments EX310 User Manual

BATTERY VOLTAGE TEST

CAUTION: Do not measure batteries while they are installed in the devices
they are powering. The batteries must be removed from installations before
tests can be made.
1. Set the function switch to the 1.5V or 9V
BAT switch position. Use the 1.5V position
for 'AAA', 'AA', 'C', 'D', and other 1.5V
batteries. Use the 9V position for square 9V
transistor batteries.
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 black test probe tip to the negative
side of the battery. Touch the red test probe
tip to the positive side of the battery.
4. Read the voltage in the display.

AC / DC CURRENT MEASUREMENTS

CAUTION: Do not make current measurements at 10 Amps for longer than
30 seconds. Exceeding 30 seconds may cause damage to the meter and/or
the test leads.
1. Insert the black test lead banana plug into the negative COM jack.
2. For current measurements up to 200mA AC or DC, set the function
switch to the 200m AAC or ADC position and insert the red test lead
banana plug into the mA jack.
3. For current measurements up to 10A AC or DC, set the function switch
to the 10A AAC or 10A ADC position and insert the red test lead banana
plug into the 10A jack.
4. Remove power from the
circuit under test, then open
up the circuit at the point
where you wish to measure
current.
5. Touch the black test probe
tip to the negative side of the
circuit. Touch the red test
probe tip to the positive side
of the circuit.
6. Apply power to the circuit.
7. Read the current in the
display.
1.50
EX310
CAT II - 600V
MultiMeter
V/ /mA
8 Model EX310-EU-ENG – V7.2– 05/2008
V