UNI-T UT81B User Manual

20
Model UT81B: OPERATING MANUAL
be returned to working mode to carry out measurement.
In order to have more accurate waveform, user can
buy an optional BNC probe and scope probe to decrease
signal attenuates. The scope probe directly connect
to the BNC probe.
When measuring voltage and frequency signal, connect
the BNC black probe to the COM input terminal and
the red probe to the voltage terminal.
When measuring current signal, connect BNC black
probe to the COM terminal and the red probe to mA
terminal.
Don’t connect the BNC probe to the 10A terminal.
B. Digital Multimeter Mode
Warning
To avoid harms to you or damages to the Meter
from electric shock, please do not attempt to
measure voltages higher than DC 1000V, AC
750V, although readings may be obtained.
To measure voltages, set up the Meter as Figure 3-
2 and do the following:
1. Insert the red test lead into the V terminal and
the black test lead into the COM terminal.
2. Set the rotary switch to V .
3. Connect test leads across with the object being
measured.
4. The measured value shows on the display.
5. Press MODE button to toggle between Multimeter
mode and Scope mode.
6. Press F1 to toggle between AC and DC voltage
measurement.

UNI-T UT81B Specifications

General

Backlight	Yes
Product type	Digital multimeter
Frequency range	0.01 - 10000 kHz
AC current range	0.4 - 10 A
AC voltage range	4 - 750 V
DC voltage range	0.4 - 1000 V
Dimensions (WxDxH)	100 x 48 x 200 mm
Battery voltage	1.5 V

Weight and Dimensions

Weight	498 g