Tektronix TAS 455, Service Manual

Page: 84 / 226

Performance Tests
Performance Verification
4Ć22
)** +! MAG ,++'& +,)&"& % &""+"'& '&
+ +! +"% %)# &)+') ') &* %)#)*
+ +! -'$+*"- *$ +' %
!# +!+ +! +"%"& ,)"* + +! "&&"& %"$ & & '
*.( '-) +! &+) " !+ "-"*"'&* ) ."+!"& +! $"%"+* *!'.& ')
! ' +! *"- *$* "-& "& $ 2 /$, +! ")*+ & $*+
"- "-"*"'&* ' +! % &"" *.( ') ,)0 %*,)%&+*
TableĂ4Ć5:ăTime Base Accuracy (Mag On)
Sec/Div Scale
(Mag On)
Time Marker
Setting
Time Mark to Graticule
Over Center 8 Divisions
&* &*
1
1 "-"*"'&
2
&* &*
1
1 "-"*"'&
&* &* 1 "-"*"'&
&* m * 1 "-"*"'&
m * %* 1 "-"*"'&
1
Change the volts/div scale as necessary to maintain vertical amplitude.
2
At this setting, two cycles of the signal are displayed for every five horizontal divisions.
+ MAIN +' On & DELAY +' Off
+ +! *"- *$ +' &*
+ +! +"% %)# &)+') ') &* %)#)*
!# +!+ +! +"%"& ,)"* + +! "&&"& %"$ & & '
*.( '-) +! &+) " !+ "-"*"'&* ) ."+!"& +! $"%"+* *!'.& ')
! "- $ "-& "& $ 2 /$, +! ")*+ & $*+ "-
"-"*"'&* ' +! % &"" *.( ') ,)0 %*,)%&+*
)** +! MAG ,++'& +,)&"& % &""+"'& '
Check Dual Delay Accuracy
Equipment Required: & +"% %)#) &)+') "+% '& ()"*"'&
'/"$ $ "+% & '& W +)%"&+"'& "+%
"*($0 !&&$ +,)&"& $$ '+!)* '
'&&+ +! ',+(,+ ' +! +"% %)#) &)+') +' +! CH 1 "&(,+ *
*!'.& "& " ,) 2