TDR
Reference
3Ć198
" ( *+ )+' # +(-#& ( )'')( ') ',.+4
'(-, 0#-" -" 4 ,'*&#(! " , ,+# +&#+ -" ,'*&#(!
" ", -0) ,'*&#(! #(*.- "((&, ( -0) #(*((- ,-* !(+4
-)+,
" ,-* !(+-)+ ).-*.- )+ " "((& #, ,&-& )+ *),#-#/ )+
(!-#/ *)&+#-2 ( '*&#-. "#, 1'*& 0#&& ,")0 2). ")0 -) ., -"
-0) "((&, ( ,-* !(+-)+, ) ( 4 -) *+ )+' # +(-#& (
)'')( ') ',.+'(-,
)+ -"#, 1'*& 2). ( - &,- )( 4 #(,-&& #( -" & -4'),- ,&)- )
-" ). &,) ( )( & *+ +&2 ) (, &(!-"
ăStep 1:ă(#-# -" *+,, UTILITY -)." Initialize ( -)."
Initialize !#(
ăStep 2:ă--" )( ( ) -" & -) (2 4 ,'*&#(! " #(*.-
/ -" )-"+ ( .(--"
ăStep 3:ă+,, -" SELECT CHANNEL .--)( )( -" ,'*&#(! "
#(*.- "((& -) 0"#" 2). "/ )((- -" &
ăStep 4:ă)." -" Sampling Head Fnc's ,&-)+
ăStep 5:ă)." TDR Preset
ăStep 6:ă--" -" &)), ( ) -" & -) -" &)0+ "((& )((4
-)+ )( -" ,' ,'*&#(! "
ăStep 7:ă$.,- -" #,*&2 ,#3 ( *),#-#)( -) ,")0 -+ ,#'#&+ -)
-"- ,")0( #( #!.+ 4
( #!.+ 4 ()-# -"- -"+ #, )(&2 )( +#,#(! ! -"- ) -" #(#(-
,-* "+ #, /+2 &#--& )+ () + &-#)( ., -" #'*( ) -"
-+'#(-#)( #( -" +#/#(! "((& )((-)+ '-", -" #'*( )
-" &
ăStep 8:ă+,, -" SELECT CHANNEL .--)( )+ -" &)0+ "((& )(
-" ,'*&#(! " $.,- -" /+-#& ( ")+#3)(-& ,--#(!, -) #,*&2
-" ,-* !(+- 2 -" .**+ "((&
" ")+#3)(-& #,-( ,*+-#(! -" &#(! !, )( -" -0) -+, #,
-" -#' #- -%, -" ,-* -+(,'#-- 2 "((& .**+ "((& -)
,'*& 2 "((& &)0+ "((&
ăStep 9:ă)." Sampling Head Fnc's ( -)." Mainframe 2 .(+
&- "((& )." TDR/TDT -) -.+( )( -" ,-* !(+-)+ )+ -"-
"((& " &)0+ "((& )( " ,'*&#(! " ", ( #(-+(&
&2 $.,-'(- "#, &-, 2). ,- -" -#' - 0"#" -" ,-* !(+-)+
)+ -" &)0+ "((& ,,+-, -" ,-* )." -" TDR Head D
Delay ,&-)+ "( -)." Exit -) +')/ -" *)*4.* '(.
( ,-* 2). -.+( )( )+ -" &)0+ "((& ( 2). &,) ,,#!(
-" %(), -) $.,- &2 )+ -" ,-* !(+-)+ #-" ,)' $.,-4
'(-, -" '#( +' #,*&2, -" -0) -+, #( #!.+ 4
Example: Differential
and Common Mode
TDR