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
