Kyoritsu 3131A User Manual download pdf (Page 11)

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6. Operation

6-1 Disconnection and check of power source of circuit under test

DANGER

● To avoid possible electrical shock, do not perform measurements on

energized (LIVE) circuits.

● Never make measurements with the battery compartment cover

removed.

CAUTION

● Never press the test button if the live circuit warning LED is lit or the

warning buzzer sounds. This may damage the circuit.

Voltage check can be made with the range selector switch at any position.

Be sure to turn off the breaker for the circuit under test.

① Connect the earth clip of the test probe (black) to the earth side and the

line probe (red) to the line side of the circuit under test.

② Ensure that the live circuit warning LED is not lit and the audible warning

is not present. If the LED is lit and the buzzer sounds, never press the test

button. Voltage is generated in the circuit under test. Recheck that the

breaker for the circuit under test is "OFF".

Fig.4

CAUTION

Never press test button

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Kyoritsu 3131A User Manual Page 11