Getting Started Tutorial 1
Agilent U1251A/U1252A User’s and Service Guide  21
The Display at a Glance
To view the full display (with all segments illuminated), 
press and hold the   button while turning the rotary 
switch from OFF to any non- OFF position. After you are 
done viewing the full display, press any button to resume 
normal functionality based on the rotary switch position. 
This is followed by a wake- up feature.
The meter will then enter power save mode once auto power 
off (APF) is enabled. To wake the meter up:
1 Turn the rotary switch (knob) to OFF position, and then 
turn it back on again.
2 Press any button for rotary switch position that is not at 
square wave output position. This is only available for the 
U1252A. 
3 For the U1252A only, to set the rotary switch at square 
wave out position, press only the DUAL, RANGE and 
HOLD buttons or turn the rotary switch to another 
position.
The LCD signs are described on pages 22, 23 and 24.