User`s guide

1 Introduction
Preparing Your Multimeter
8 U1273A/U1273AX User’s Guide
Select the range
The multimeter’s selected range is always displayed above
the right- hand end of the bar graph, as the range indicator.
Pressing switches the multimeter between manual and
auto- ranging. It also cycles through the available multimeter
ranges when manual ranging is enabled.
Auto- ranging is convenient because the multimeter
automatically selects an appropriate range for sensing and
displaying each measurement. However, manual ranging
results in better performance, because the multimeter does
not have to determine which range to use for each
measurement.
In auto- range, the multimeter selects the lowest range to
display the highest available precision (resolution) for the
input signal. If manual range is already enabled, press
for more than 1 second to enter the auto- ranging mode.
If auto- ranging is enabled, press to enter the manual
range mode.
Each additional press of sets the multimeter to the
next higher range, unless it is already in the highest range,
at which point the range switches to the lowest range.
Alerts and warnings during measurement
Voltage alert
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NOTE
The range is fixed for diode tests, temperature, and Z
LOW
measurements.
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WARNING
For your own safety, please do not ignore the voltage alert. When the
multimeter cautions you with a voltage alert, you are advised to take
note of the high voltage existence and to use precautions when
performing measurements.