Lighting Of The Measurement Location; Continuity Test; Fi/Rcd Trip Test; Backlighting - TESTBOY Profi III LCD Bedienungsanleitung

Operation

Lighting of the measurement location

Lighting of the measurement locations is switched on and off by prolonged
activation of the "L.H" button ( save data).

Continuity test

Place the test probes on the line to test, fuse or similar. For a resistance of
0 - 2 k, the resistance values appears on the display and an acoustic signal
sounds up to approx. 50. If the measurement value is >2 k, the over-
range indication "OL" appears on the display.

FI/RCD trip test

The Testboy
a FI/RCD circuit breaker using two buttons (FI\RCD). The FI/RCD
(max. 30 mA) is checked between the phase and circuit breaker (max. 240 V).

Backlighting

The display backlighting is permanent

Frequency measurement

During the voltage measurement, the frequency of the AC voltage applied is
recorded and indicated on the display by the small figures.
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Profi III LCD has a load that makes it possible to trigger
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Testboy Profi LCD Plus