1 Introduction  
Your Multimeter in Brief
24 U1231A/U1232A/U1233A User’s Guide
Display screen
The display annunciators of your multimeter are described 
in this section. See also 
“Measurement units”  on page  26 for 
a list of available measurement signs and notations and 
“Analog bar graph”  on page  27 for a tutorial on the analog 
bar graph located at the bottom of your display screen.
General display annunciators
The general display annunciators of your multimeter are 
described in the table below. 
Click the respective “Learn more” pages in Table  1- 7 for 
more information on each annunciator.
Tab le  1- 7 General annunciators 
Legend Description Learn more on:
Low impedance measurement enabled page 36
Hazardous voltage sign for measuring voltage 
≥30 V or overload
page 10
DC (direct current) and AC (alternating 
current) indication
-
• Capacitor is charging (during capacitance 
measurement)
• Open continuity test
page 49
and
page 41
• Capacitor is discharging (during 
capacitance measurement)
• Short continuity test
Calibration enabled -
Scale transfer enabled page 76
Smooth mode enabled page 85
APO (Auto Power-Off) enabled page 6