Fluke 117 - Manual (Page 17)

True-rms Multimeters
Making Basic Measurements
15
To detect the presence of ac voltage, place the top of the
Meter close to a conductor. The Meter gives an audible as
well as visual indication when voltage is detected. There
are two sensitivity settings. The “
Lo” setting can be used
on flush mounted wall sockets, power strips, flush
mounted industrial outlets and various power cords. The
“
Hi” setting allows for ac voltage detection on other styles
of recessed power connectors or sockets where the actual
ac voltage is recessed within the connector itself. The
VoltAlert detector works in bare wire applications with
voltages as low as 24 V in the “
Hi” setting.
XW Warning
If there is no indication, voltage could
still be present. Do not rely on the
VoltAlert detector with shielded wire.
Operation may be effected by
differences in socket design,
insulation thickness and type.
Making Low Impedance Capacitance
Measurements (115 & 117 only)
For making capacitance measurements on cables with
ghost voltage, hold
qwhile turning on the Meter to
switch the Meter into LoZ, (low input impedance)
Capacitance mode. In this mode, capacitance
measurements will have a lower accuracy and lower
dynamic range. This setting is not saved when the Meter is
turned off or goes into sleep mode.
Testing Diodes (115 & 117)
Forward Bias
Single
Beep
Reverse Bias
Shorted
and Open
Bad Diode Bad Diode
Good Diode Good Diode
edy07f.eps