Connecting To Equipment To Be Tested - Hioki 3154 Instruction Manual

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2.5 Connecting to Equipment to be tested

Observe the following precautions to avoid electric
shock.
WARNING
To avoid the risk of electric shock, turn power off on
equipment to be tested.
Before and after testing, do not touch equipment to be
tested and probe tip when TEST lamp is on or blinking.
After testing is complete, confirm that the 3154 TEST
lamp is off before disconnecting probe from equipment
to be tested.
When connecting probe to equipment to be tested under
CAUTION
TEST status, verify the voltage occurred on the display
before connecting. Improper voltage may damage
equipment to be tested.
Connect probe to equipment to be tested.
NOTE
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Preparation for Testing
When 3154 is in READY status, approximately a voltage
greater than +10 V volts in equipment to be tested initiates
TEST lamp, and blinks after connecting probe.
When connecting the LOW side of the measurement terminal
with the earth, there is a possibility that a measurement value
smaller than the actual value may be displayed. As such,
when conduction an insulation test with the earth, be sure to
ground the measurement object, and connect the HIGH side of
the terminal with the earth.