14

Model UT231: OPERATING MANUAL

When the voltage input is higher than 30V, the
display shows     to warn you to take extra care
of safety.
When the input voltage is higher than 600V
(r.m.s.), the display shows OL.

The AC Voltage ranges are:
15V, 100V, 300V and 600V

The frequency range is:
20Hz~500Hz

Warning

To measure AC voltage + frequency, connect the Meter
as follows:

Insert the red test lead into the 

V

 terminal and black

test lead to the

 COM 

input terminal.

Press the 

MENU

 to select Voltage (main display)

+ Frequency (secondary display) range and connect
the two test leads to the object being measured.
The double display shows the AC voltage True
RMS value and the frequency value.

1.

2.

3.

Press 

MAX/MIN 

again to show the present AC

voltage True RMS value.
The display shows 

OL

 when the input voltage is

higher than 600V (r.m.s).

6.

7.

When the measurement has been completed,
disconnect the connection between the testing leads
and the circuit under test and remove testing leads
from the input terminals.

Note

Press 

MAX/MIN

 once, the LCD displays MAX, it

starts recording the maximum AC voltage True RMS
value.
Press

 MAX/MIN

 again, the LCD displays MIN, it

starts recording the minimum AC voltage True RMS
value.

4.

5.