![](/images/backgrounds/90658/bgf9.png)
Appendix B: Algorithms
TDS 620A, 640A & 644A User Manual AĆ19
! $# ( ! "!
$ & !! !$ $ ! '!
" ! ! #" ! ! ! "(
! $ " ! # ! #" ! !$ (
"! ! "! $ # $ !!!
! % ' ! "! " &
%! ! "! !& ! " !
# ## ! !!" &
MidRef
Both min and max
samples are above
MidRef, so use
minima.
MidRef
Both min and max
samples are below
MidRef, so use
maxima.
Figure AĆ4:ăChoosing Minima or Maxima
to Use for Envelope Measurements
Missing orOutĆofĆRangeSamples