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WARNING: To avoid electrical shock or injury, remove the test leads and any input signals/voltages before replacing the fuse.
• Turn the rotary selector dial to (ZERO/Ω) position.
• Press and hold the Test Button. If the display shows "FUSE" the fuse is bad and should be replaced. Please see Fuse
Replacement section of this manual.
The meter continuously monitors battery voltage. If the Low Battery indicator is displayed, replace the batteries.
To manually test the batteries:
• Turn the rotary selector dial to the Battery/Voltage position, with no test leads connected.
• Press the Select button to start the battery test. The battery voltage is displayed for 5 seconds. Then the voltage function is
displayed again.
Testing the Fuse
IRT803
V
V
Apo
Apo
SELECT
TEST
HOLD
1000V
ZERO
500V
250V
V
100V
OFF
ZERO
V
INSULATION
COM
CAT IV 600V
FUSED
CAT III 1000V
600V
Testing the Batteries
IRT803
V
V
Apo
Apo
SELECT
TEST
HOLD
1000V
ZERO
500V
250V
V
100V
OFF
ZERO
V
INSULATION
COM
CAT IV 600V
FUSED
CAT III 1000V
600V
13
TEST
SELECT
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