User manual

Introduction 1
Preparing Your Clamp Meter
U1190A Series User’s Guide 7
Automatic Power-Off (APO)
Your clamp meter automatically turns off if the rotary
switch is not moved or a key is not pressed for 15 minutes
(default). The clamp meter will beep thrice before it powers
off. Pressing any key or turning the rotary switch to a new
position will turn the clamp meter back on after it is
powered off automatically.
The symbol is shown on the bottom left of the display
when the automatic power- off function is enabled.
Follow the steps below to change the timer period or
completely disable the automatic power- off.
1 Press and hold while powering on the clamp meter to
enter the Setup menu.
2 The automatic power- off (A #) timer period is the first
Setup item shown.
3 Press to make changes to the A # value.
Press or to change the timer period (from 
A 01 to A 99 minutes) or to completely disable the
automatic power- off function (AoFF).
4 Press to save the changes, or press to discard
the changes and proceed to the next Setup item.
5 Cycle the clamp meter’s power to exit the Setup menu.
Enabling the backlight
If viewing the display becomes difficult in low- light
conditions, press (on the U1192A/U1193A/U1194A
models) or (on the U1191A model) to activate the LCD
backlight.
Press / again to deactivate the LCD backlight.
NOTE
To conserve battery life, a user-adjustable timer controls how long the
backlight stays on. The default timer period is 15 seconds.
U119XA UG.book Page 7 Thursday, September 15, 2011 4:03 PM