8

Model UT231: OPERATING MANUAL

B.The Meter Back and Bottom Structure
   

(see figure 2)

1          Infrared Interface

2          USB Communication Interface Cable

Figure 2

Functional Buttons

Below table indicated for information about the functional
button operations.

Operation Performed

Press and hold 

POWER

 for 1 second to

turn the Meter on.
Press 

POWER

 again to turn the Meter off.

Press 

HOLD

 to enter the Hold mode in

any mode,     appears and the Meter
beeps.
Press 

HOLD

 again to exit the Hold mode

to return to measurement mode, the
Meter beeps and 

disappears.

Press 

LIGHT

 to turn the display backlight

on.
The display backlight will be off
automatically after 30 seconds.

Button
POWER

HOLD

LIGHT

MENU

H

Press

 MENU 

to display the following

functions in sequence:

H