Tektronix TDS 520A - Figure 4 7: Measurement of DC Accuracy at Maximum Offset and Position

Performance Tests
TDS 520A, 524A, 540A, & 544A Service Manual
4Ć31
Third, turn on the
Measurement called
mean and read the
results here.
Second, input a DC
level equal to the offset
plus 3 divisions.
First set vertical and position
offsets to maximum (no input).
Note gnd ref indicator bounded
onĆscreen for the offset baseline
below screen.
Figure 4Ć7:ăMeasurement of DC Accuracy at Maximum Offset and Position
 Check against limits:
H  && & $"'& "$ & %'$ !& Mean $"'& "!
%$! % )&! &  &% %& "$ & '$$!& ($& % !
#"%&"!"%&!$&"$ %&&!%
H #& %&#  $($%! & #"$&* " & #"%&"! "%& !
!$&"$ %&&!% % % %& ! & &
H  && & Mean %'$ !& $"'& "! %$! % )&!
&  &% %& "$ & '$$!& ($& % %&&! ! #"%&"!
"%&!$&"$ %&&!%
H #& %'%&#% &$"'  '!&  ($& % %&&!% %&+
&!% %& !  + !  + "$ &   !
 $  "$ & !! '!$ &%&
 Test all channels: #& %'%&#%  &$"'  "$  "'$ !!%
 Disconnect the hookup:
 Set the generator output to 0 V
 ! %"!!& &  $" & !$&"$ "'&#'& & & !#'&
"!!&"$ " & !! %& &%&