Making Measurements 2 
Testing for Continuity
U1231A/U1232A/U1233A User’s Guide 41
Testing for Continuity
Set up your multimeter to test for continuity as shown in 
Figure  2- 11. Probe the test points and read the display.
In continuity, a short means a measured value is less that 
the threshold resistance values listed in 
Table  2- 1.
Press   to switch between resistance measurement, short 
continuity test ( ), or open continuity test ( ). See 
Figure  2- 10 to learn more.
To avoid possible damage to your multimeter or to the equipment under 
test, disconnect the circuit power and discharge all high-voltage 
capacitors before testing for continuity.
Continuity is the presence of a complete path for current flow. The 
continuity test features a beeper that sounds and a backlight that flashes 
as long as a circuit is complete if short continuity is selected (or broken if 
open continuity is selected). The audible and visual alert allows you to 
perform quick continuity tests without having to watch the display.
Tab le  2- 1 Threshold resistance values
Measuring range Threshold resistance
600.0 Ω <23 ±10 Ω
6.000 kΩ <230 ±100 Ω
60.00 kΩ <2.3 ± 1 kΩ
600.0 kΩ <23 ± 10 kΩ
6.000 MΩ <131 ± 60 kΩ
60.00 MΩ <131 ± 60 kΩ