LAUNCH                    X-431 PAD III User Manual 
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reference  lead  to  the  ground  connector.  When  using  the  probe  hook-tip, 
insert  the  tip  onto  the  probe  compensator  firmly  to  ensure  a  proper 
connection. 
 
Fig 12-2 
5.  Tap  the    button  located  on  the  bottom  of  the  screen,  a  square  wave 
(approximately  1kHzm  2V  peak-to-peak)  will  be  displayed  within  several 
seconds.   
*Note:  The  above  steps  also  can  be  applied  to  check  whether  the  signal 
input/output of other Channels are normal or not.   
  Check the shape of the displayed waveform to determine whether the probe 
is correctly compensated. 
Correctly 
Compensated 
 
Over 
Compensated 
 
*Note:  If  necessary,  use  a 
non-metallic  tool  to  adjust  the 
trimmer  capacitor  of  the  probe  for 
the  fattest  square  wave  being 
displayed on the Scopebox. 
Under 
Compensated 
 
*Warning: To avoid electric shock while using the probe, make sure the insulated cable 
is  perfect,  and  do  not  touch  the  metallic  portions  of  the  probe  head  while  it  is 
connected with a high-voltage source.