UNI-T UT71E User Manual

37
Model UT71A/B/C/D/E: OPERATING MANUAL
E. Testing Diodes
Figure 3-5. Diode Test
Warning
To avoid harms to you, please do not attempt to input
voltages higher than 60V DC or 30V rms AC.
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 semicondutor junction, then measure
the voltage drop across the junction. A good silicon
junction drops between 0.5V and 0.8V
To test the diode out of a circuit, set up the Meter as
Figure 3-5 and proceed as follows:
Insert the red test lead into the terminal and the
black test lead into the COM terminal.
Set the rotary switch to ; and press BLUE
button to select measurement mode.
1.
2.

UNI-T UT71E Specifications

General

Data hold	Yes
Product type	Digital multimeter
Frequency range	0.04 - 40000 kHz
AC current range	0.4 - 10 A
AC voltage range	4 - 1000 V
DC voltage range	0.4 - 1000 V
Capacitance range	40 - 40000 nF
Statistic function	Maximum, Minimum
Basic accuracy (frequency)	0.01%+8
Basic accuracy (DC current)	0.08%+8
Basic accuracy (DC voltage)	0.025%+5
Basic accuracy (resistance)	0.3%+8
Basic accuracy (capacitance)	1%+20
Temperature measurement range	-40 - 1000 °C
Dimensions (WxDxH)	93 x 40 x 200 mm
Battery voltage	9 V

Weight and Dimensions

Weight	384 g