Operation
Testboy
®
40 Plus 21
ENGLISH
DC voltage testing:
When the probe tips are connected to a DC voltage that
lies within the rated voltage range, one of the lower (6V +
-) or bottom LED indicators lights up to indicate the corre-
sponding voltage. The upper LED indicators show the
voltage, whereby the reference pole is connected to the
large hand element.
AC voltage testing:
When the probe tips are connected to an AC voltage that
lies within the rated voltage range, both of the upper (6V
+ -) and the lower LED indicators light up to indicate the
corresponding voltage. Simultaneous lighting up of the
upper LEDs indicates the presence of an AC voltage.
Phase search:
Hold one test tip against the earth (ground) lead and use
the other tip to check the remaining leads. The Testboy
40 Plus indicates the AC voltage for the phase in ques-
tion. FI/RCD is not triggered.
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