Triggering
TDS 620A, 640A & 644A User Manual 2Ć17
#!" ! % " %$ "
" # !" "! '# ' !# " %" !
" " "" # ! " " ! " " "
""" # ! " " !" !"" "
'# $!#( " " !" !"" " " " " !'
! " % " " # ! " %$ #
!" " (" # %" " " %$ %
" " "
' #! ! !' " " $# " #!"
"# & '# " '" " #! #%"
" '# "!" #" " ' $ $# " " " "
" " # ""# " " "
' '(%" " "'# ' #$ #! #"
" !# " "
!" " ! %" " !!! " " "
" ! " ! ! # )
#!" " ! ' !"Slope " # "
!" " ! !! " ! #"" !
$" " ! % "" " " " # !
! # )
PositiveĆGoing Edge NegativeĆGoingEdge
TriggerSlope Can be Positive or Negative
TriggerLevel Can be
Adjusted Vertically
Figure 2Ć3:ăSlope and Level Controls Help Define the Trigger
"(!! "! '# !" " " �� $ %" ""
MAIN LEVEL
Trigger PositionSlope and Level