3
Multimeter Features
96
Keysight U1241C/U1242C User’s Guide
Detecting AC Voltage Presence (Vsense) (U1242C only)
The Vsense detector is a non-contact voltage detector that detects the presence
of AC voltages nearby.
Press and hold
for > 1 second to enable or disable the Vsense function (on
any position of the rotary switch except
OFF
).
Press
to toggle the Vsense detector’s sensitivity between
(high
sensitivity) or
(low sensitivity).
WARNING
– You are advised to test on a known live circuit within the rated AC voltage
range of this multimeter before and after each use to ensure that the
Vsense detector works.
– Voltage could still be present even if there is no Vsense alert indication.
Do not rely on the Vsense detector with shielded wires. Never touch live
voltage or conductor without the necessary insulation protection, or
power off the voltage source.
– The Vsense detector may be affected by differences in socket design,
insulation thickness, and insulation type.
CAUTION
You are advised to measure voltage by using test leads through the Z
LOW
,
AC V, or DC V function after using the Vsense function, even if there is no
alert indication.
Vsense
NOTE
If the presence of AC voltage is sensed, the multimeter’s beeper will sound, the
red LED indicator will light up, and
will be displayed. The audible and visual
alerts allow you to easily sense nearby AC voltage presence.
No resolution and accuracy of voltage measurement will be displayed in this
mode.
Range
Auto
Содержание U1241C
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