LAUNCH                    X-431 PAD III User Manual 
109 
Normal:  This  mode  allows  the  Scopebox  to  acquire  a 
waveform only when it  is triggered.  If  no trigger occurs, 
the Scopebox keeps waiting, and the previous waveform, 
if any, will remain on the display.   
Single:  In  this mode,  it  only acquires the waveform  that 
generates for the first time the trigger conditions are met, 
and then stops after finishing capture.   
Source  Select which channel as trigger signal. 
Slope 
+ : Trigger on rising edge 
- : Trigger on falling edge 
High Freq 
Rejection 
Reject high frequency signals when selected. 
2) If Pulse Width trigger is selected (Pulse trigger occurs according to the width 
of  pulse.  The  abnormal  signals  can  be  detected  through  setting  up  the  pulse 
width condition): 
Menu  Comments/Settings 
Sweep 
The  sweep  mode  determines  how  the  Scopebox 
behaves in the absence of a trigger event. The Scopebox 
provides three trigger modes: Auto, Normal, and Single. 
Auto: It allows the Scopebox to acquire waveforms even 
when it  does not detect a trigger condition.  If no trigger 
condition  occurs  while  the  Scopebox  is  waiting  for  a 
specific period, it will force itself to trigger. 
When  forcing  invalid  triggers,  the  Scopebox  can  not 
synchronize the waveform, and then waveform seems to 
roll across the display. If valid triggers occur, the display 
becomes stable on the screen. 
Normal:  This  mode  allows  the  Scopebox  to  acquire  a 
waveform only  when it  is  triggered.  If no trigger occurs, 
the Scopebox keeps waiting, and the previous waveform, 
if any, will remain on the display.   
Single: In this  mode, it  only acquires the waveform that 
generates for the first time the trigger conditions are met, 
and then stops after finishing capture.