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Function description
3.3. Hold funcion
Press Hold button to freeze the displayed value. Press again to release the display.
3.4. Relative measurement
Show the difference between actual value and the relative base.
Press REL Button to enter relative measurement and the meter will record the initial value when
pressing the key.
Displayed value = Actual value -Initial value
Press REL Button again to exit relative measurement.
Press SELECT button to view Initial value,when the Initial value is invalid,display ----.
3.5. Insulation test lock
In insulation test mode, press Test button to perform insulation test until the button is released.
When the button is released, the screen display hold sign.
Press Lock Button, then the screen display Lock sign, press Test Button, the meter will perform
insulation test unitl you press Test button again; The test lock will unlocked while to cancel insulation
test.
Lock function is invalid when timer function is selected.
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