Fluke 12, User Manual

Page: 17 / 32

12 Multimeter
VCHEK AND HOW TO USE IT
13
VCHEK AND HOW TO USE IT
i
is a subset of the continuity/ohms function. In
i
, the meter is designed to
automatically display an ac or dc voltage when the meter detects a voltage greater in
magnitude than about 4.5 V and the meter is not in the manual range mode. THIS
WILL NOT HARM THE METER.
i
is always enabled (and
k
is displayed) when
the meter is in the continuity/ohms function unless the meter is in one of the following:
• The manual range mode (i.e.,
Z
is displayed)
• The MIN MAX mode (i.e.,
j
is displayed)
• The capacitance function (i.e., µF is displayed)
W
Warning
Repetitive transients on a dc bus will cause
i
to select ac volts, even
though a hazardous dc voltage may be present. To avoid a misleading display
and possible electric shock, manually select the proper volts function for
measurements on these circuits.
In
i
, the meter has a low input impedance (~2 k
e
). When a voltage is displayed,
Lo Z is also displayed to remind you of this, and the beeper momentarily sounds a
i
Alert™. To disable the
i
Alert in the ohms function, press and hold down
[
g
] while turning the meter on.