Connection Sockets; Functional Description; Special Functions; Automatic Shut-Down - TESTBOY TV 431 Bedienungsanleitung

Connection sockets

Connection Description
Ω
Input / output positive connection
HI V
COM
Negative connection for all measurements (except insulation measurement)
LO Negative connection for insulation measurement

Functional description

Special functions

Additional functions are available during device activation. To select the respective special function, depress the corre-
sponding button depressed and turn the rotary switch from OFF to a different position. The special function is deactivat-
ed when then device is switched off (OFF).
Buttons
SELECT Automatic deactivation is deactivated. The display shows PoFF until the button is released.
ENTER The acoustic signal issue is deactivated.

Automatic shut-down

The test instrument is fitted with an automatic deactivation function (sleep mode) to protect the battery. This triggers if
no function has been actuated for 10 minutes and no button has been pressed. The sleep mode ends as soon as a but-
ton has been pressed or a rotary switch is adjusted.
If you wish to end sleep mode, hold and depress the SELECT button whilst you activate the test instrument. Sleep mode
is deactivated in insulation test mode as a matter of course or if the automatic deactivation has been deactivated by
pressing the SELECT button after the device has been activated.

Data hold function

Press the HOLD button to hold on to the displayed value. Pressing the button again means that the value is no longer
held.

Relative measurement

The relative measurement displays the difference between the actual value and the relative base value.
Press the REL button to perform a relative measurement; the device detects the initial value when the button is pressed.
Displayed value = actual value - initial value
To end the relative measurement, press the REL button again.
You can display the initial value using the SELECT button. If this is invalid, the display will show ---
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Testboy TV 431
Functional description
Function
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