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.
EX310
MultiMeter
6 Model EX310 - Version 7.1 – 05/2006
www.burntec.com
1.50
V
CAT II - 600V
V/ /mA