UNI-T UT20B User Manual

2. For forward voltage drop readings on any semiconductor component, place the
red test lead on the component’s anode and place the black test lead on the
component’s cathode.
The measured value shows on the display.
Note
l In a circuit, a good diode should still produce a forward voltage drop reading
of 0.5V to 0.8V; however, the reverse voltage drop reading can vary depending
on the resistance of other pathways between the probe tips.
l Connect the test leads to the proper terminals as said above to avoid error
display.
l The LCD will display "
" indicating open-circuit for wrong connection.
l The unit of diode is Volt (V), displaying the positive-connection voltage-drop
value.
l When diode testing has been completed, disconnect the connection between
the testing leads and the circuit under test.
Measurement Operation (8)
18
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