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Voltcraft VC270 Manual

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43
REL Function (only VC270 and VC290)
The REL function allows a reference value measurement to avoid possible line losses which may
caused e.g. during resistance measurements. For this purpose, the current indicated value is set to
zero. Anew reference value is set.
Press the “REL” button to activate this measuring function. “ ” appears on the display. The automat-
ic measuring range selection is deactivated (except for capacity measurement range).
In order to switch off this function, simply change the measurement function.
ƽ
The REL function is not active in the frequency measuring range or in high-Ohm
resistance measurement range, during diode tests and continuity testing.
HOLD Function (only VC290)
The HOLD function freezes the currently indicated measured value to allow you to read it or to take the
record without rushing.
ƽ
If you test live wires make sure that this function is deactivated before the measure-
ment starts. Otherwise, the measurement will be false!
To switch on the Hold function, press the “H” button (9); an acoustic signal confirms this command and
“H” appears on the display.
In order to switch off the HOLD function, press the “H” button (9) again or simply change the measure-
ment function.
Low Imp. 400 k
ΩΩ
Function (only VC250 and VC270)
ƽ
This function may only be used for voltages of a max. of 250 V and a max. of 3 sec-
onds!
This measuring function enables the reduction of the measuring impedance from 10 MΩ to 400 kΩ.
The reduction of the measuring impedance suppresses possible phantom voltages, this could falsify
the measuring result.
Press this button during voltage measurement (max. 250 V!) for a max. of 3 seconds. After the button
is released, the multimeter has its normal measuring impedance of 10 MΩ.
Auto-Power-Off Function (only VC270 and VC290)
The DMM turns off automatically after 30 minutes if no button or switch is operated. This function pro-
tects the battery, saves battery power and extends the service life.
To reactivate the DMM after automatic shutdown, use the dial switch or press the “REL” or “SELECT”
button.
… 43 …


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