UNI-T UT20B User Manual

E. Diodes Test
Warning
To avoid damages to the Meter or to the devices under test, disconnect circuit
power and discharge all the high-voltage capacitors before testing diodes.
Use the diode test to check diodes, transistors, and other semiconductor devices.
The diode test sends a current through the semiconductor junction, and then measures
the voltage drop across the junction. A good silicon junction drops between 0.5V
and 0.8V.
To test a diode out of a circuit, connect the Meter as follows:
1. Set the rotary switch to
.
Measurement Operation (7)
17
Model UT20B: OPERATING MANUAL

UNI-T UT20B Specifications

General

Diode test	Yes
Product type	Digital multimeter
DC current range	0.2 - 2 A
DC voltage range	0.2 - 300 V
Statistic function	Maximum
Basic accuracy (DC current)	±(2.5%+10)
Basic accuracy (DC voltage)	±(1.5%+2)
Basic accuracy (resistance)	±(2.5%+5)
Dimensions (WxDxH)	52 x 26 x 95 mm
Battery voltage	12 V

Weight and Dimensions

Weight	125 g