Jula UT131, User Manual

Page: 13 / 37

UT131 Palm Size Multimeter
-13-
1) Switch the dial to “ ” position.
2) Insert the black test lead into the COM jack, the red test lead into the “VΩmA” jack. Connect
test leads with the points to be tested in parallel
3) Measured points’ resistance > 51Ω, circuit is in open status.
Measured points’ resistance ≤ 10Ω, circuit is in good conduction status, bu zzer will go off
Notes:
Before measuring continuity, switch off all power supplies and fully discharge all capacitors.
4. Diode Measurement (see Figure 2b)
1) Switch the dial to “ ” position.
2) Insert the black test le ad into the COM jack, the red test lead into the “VΩmA” jack. Connect
test leads with the diode in parallel
3) “OL” symbol appears when the diode is open or polarity is reversed.
For silicon PN junction, normal value: 500 ~ 800mV (0.5 ~ 0.8V).
Notes:
*. Before measuring PN junction, switch off the power supply to the circuit, and fully discharge all