2 Making Measurements
80 Keysight U1253B User’s and Service Guide
Alerts and Warning During Measurement
Overload alert
This multimeter provides an overload alert for voltage measurement in both auto
and manual range modes. The multimeter starts beeping periodically once the
measured voltage exceeds the V-ALERT value set in the Setup mode. Immediately
remove the test leads from the source being measured.
By default, this feature is turned off. Be sure to set the alerting voltage according
to your requirement.
The multimeter will also display as an early warning for hazardous voltage
when the measured voltage is equal to or greater than 30 V in all three DC V, AC V,
and AC+DC V measurement modes.
For a manually selected measurement range, when the measured value is outside
the range, the display will indicate OL.
For your own safety, look out for this alert. When you see this alert,
immediately remove the test leads from the measuring source.
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