Logic Triggering
TDS 620A, 640A & 644A User Manual 3Ć81
Logic Function (AND) Becomes TRUE
Logic Function Becomes FALSEand
TriggersAcquisition
Time Logic Function is TRUE
Time Logic Function Must be TRUE
Figure 3Ć43:ăLogic TriggerMenu Ċ Time Qualified TRUE
 % /&+ )#* State #&! *(!(!% *  &)!##&)&' +))  %%#
+. &% *   ) #&" &( #&! !(+!* $ (&$ *  ()* &
*   %%#)  ' 0 &( *!#) &% &'(*!&%) &$$&% *& &*
'**(% % )** *(!()
  )** *(!( #&! -&(") ) &##&-) *  &)!##&)&' -!*) +%*!# * 
&+(*  %%# $*) *  )#* )#&' % ,&#* * () &# * * %
 ") *  #&! +%*!&% ''#! *& *  !()* * (  %%#) % ! *  +%0
*!&% &%!*!&% !) ) )'!! !% *  *  Trigger When $%+ Goes TRUE &(
Goes FALSE  *(!( &+()

Define Inputs

&)* * #&! )** &(  &*  !%'+*  %%#) Ch1Ch2 
 ()) TRIGGER MENU➞Type$!%➞Logic'&'0+'➞
Class$!%➞State '&'0+'➞Define Inputs$!%
  &&) !* ( ! H &- L &( &%* ( X )! &( *  !()*
* (  %%#)    &!) &( Ch4 Aux 2 &% *   ( (!)!%
 % ##!% 
State Operations