User's Manual

Triggering
TDS 620A, 640A & 644A User Manual
2Ć17
 #!"   ! %   " %$    "
"  # ! " "! '#   '   !#  " %"  !
  "  "   "" # !  " "  ! "  "   "
  " "" # !  " "  ! " !""   "
  '# $!#( " "  !" !"" " "  "  " !'
!   " %  " "  # !  " %$    #
!"  "  (" # %"  "  " %$    %
"  "   "
' #! !  !'  "   "  $# " #!"
"#  &  '#   " ' "  " #!   #%"
"  '# "!"  #" " '  $ $# " "   " " 
 "  "      # " "#  "   " "
' '( %"    " " '# ' #$ #! #"
" !#   " "
 ! "  " ! %" " !! ! " "  "
 " !  "     ! ! #  )
# !" "  ! ' !" Slope  "    #  "
!"   " !   ! !  " ! # ""  !
 $ "  " ! %   ""  " "  " # !
! #  )
PositiveĆGoing Edge NegativeĆGoing Edge
Trigger Slope Can be Positive or Negative
Trigger Level Can be
Adjusted Vertically
Figure 2Ć3:ăSlope and Level Controls Help Define the Trigger
 "( !! "! '# !" "  "  $ %" " " 
MAIN LEVEL 
Trigger Position
Slope and Level