Testing Dc Voltage; Testing Ac Voltage; Data Hold - Function; Phase Testing - TESTBOY Profi LCD Plus Bedienungsanleitung

Operation

Testing DC voltage

When the probe tips are connected to a DC voltage within the nominal volt-
age range, the reading is displayed in volts and the "DCV" symbol lights up.
If a negative voltage is detected at probe tip "L1", a "-" (minus) symbol is dis-
played before the reading.
An acoustic signal and a blinking background light on the display are used to
indicate that there is a life-threatening voltage level at or above 35 V pre-
sent.

Testing AC voltage

When the probe tips are connected to an AC voltage within the nominal volt-
age range, the reading is displayed in volts and the "ACV" symbol lights up.
An acoustic signal and a blinking background light on the display are used to
indicate that there is a life-threatening voltage level at or above 35 V pre-
sent.

Data Hold - function

Press the "Data Hold"-button to save the LCD screen reading to memory. A
"D.H" symbol is shown on the display to indicate the "DATA HOLD" function.
This function can be deactivated by pressing the same button a second time.

Phase testing

Bring one of the probe tips into contact with a conductor, while touching the
finger contact located at the back. When a phase of min. 100 V~ is con-
nected, the small LCD screen indicates "L1".
When using finger contact to determine the phase wire, the perceptibility of
the display can be effected by several factors, including insulated mecha-
nisms that protect against direct touch, poor positioning (for example, on
wooden ladders or on insulated floor surfaces), an unearthed voltage, or un-
favourable lighting conditions.
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Testboy Profi LCD Plus