User`s guide

2 Making Measurements
Testing for Continuity
54 U1273A/U1273AX User’s Guide
Testing for Continuity
Set up your multimeter to test for continuity as shown in
Figure 2- 16. 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- 10.
Table 2- 9 Rotary switch position allowing continuity tests
Legend Default function Function when is pressed
Resistance
measurement (Ω)
Cycles between
• Continuity test ( ),
• Smart Ω measurement, or
• Resistance measurement (Ω)
S
h
i
f
t
V
i
e
w
E
s
c
Smart
CAUTION
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.
NOTE
Continuity is the presence of a complete path for current flow. The
continuity test features a beeper that sounds as long as a circuit is
complete, if normal open is selected (or broken, if normal closed is
selected). The audible alert allows you to perform quick continuity tests
without having to watch the display.
Table 2- 1 0 Threshold resistance values
Measuring range Threshold resistance
30.000 Ω <25 ± 10 Ω
300.00 Ω <25 ±10 Ω
3.0000 kΩ <250 ±100 Ω
30.000 kΩ <2.5 ± 1 kΩ
300.00 kΩ <25 ± 10 kΩ