Example 11: Taking TDR Measurements
Operating Basics
2Ć94
&) &')%$ '()+!'& + )+!,$ ,&!+* ' %*,)%&+ ) -'$+* ') +
-)+!$ /!* & *'&* ') + ')!1'&+$ /!* * ) &'+ + ,&!+* '
%*,)%&+ '%%'&$0 ,* !&
& 0', *$+ TDR Preset + ,+'%+!$$0 & +
,&!+* ' + -)+!$ /!* +' ,&!+* ' ) ' r ', & & + %*,)2
%&+ ,&!+* ') '+ )+!,$ /* 0 ,*!& + Graticules *$+') !& +
-')% %"') %&,
ăStep 7:ă', Graticules !& + %"') %&, & Feet Meters')
Inches !& + ('(2,( %&, 0', #&'. + + + ()'(+!'& -$'!+0 '
0',) $ !)* )'% + ,$+ +', + Propagation Velocity
*$+') & ",*+ + !* ()%+) 0', '&+ #&'. + -$'!+0 ') )
,*!& #+)'&!/ $* (+ + ,$+ !* ,&!+$** &,%)
)()*&+* + )+!'& ' + *( ' $! + + + *!&$* (** + )',
0',) &+.')# ') +)&*%!**!'& $!&
')!1'&+$ /!* !* &'. $!)+ !& 0',) '*& ,&!+* ' %*,)%&+
NOTE
*)- + Y Units *+!'& ' + Graticules ('(2,( %&, -)+!$
/!* ,&!+* ) *+ +' ) ' *' Rho !* *$+ & !+!'& + Reference
Amplitude *$+') * '.* ))& %($!+, ' 250 mV !* !* +
%($!+, ' + *+( + + + 2 *%($!& *&* + )', +
$
',+* ) !*($0 !& ,&!+* ' !%(& W * .$$ * !& ,&!+* ' ) '
!& + ,)*')* %"') %&,
Changing Graticule
Units for TDR
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