Performance Tests
TDS 520A, 524A, 540A, & 544A Service Manual
4Ć47
First, set vertical offset to maximum
and vertical position to -3
divisions.
Second, set input equal to
the offset to return the DC
level to the screen.
Third, push SET LEVEL to 50%
and check the results in the
main menu under Level."
Figure 4Ć17:ăMeasurement of TriggerĆlevel Accuracy
Confirm Delayed trigger system is within limits for TriggerĆlevel/Threshold
accuracy:
Select the Delayed time base:
H &'' HORIZONTAL MENU
H &'' ( " #."#) )(($# Time Base
H &'' ( ' ."#) )(($#' Delayed Only # Delayed TrigĆ
gerable
H ( D !, $& -$#(! SCALE ($ m'
Select the Delayed trigger system:
H &'' SHIFT (# %&'' ( &$#(.%#! )(($# DELAYED TRIG
H &'' ( " #."#) )(($# Level
Measure the test signal: &'' ( sideĆmenu button SET TO 50%
TRIG'D # ($& '$)! ! ( ( "')&"#( &')!(' #
( ' "#) !$+ ( !! Level
Check against limits: $ ( $!!$+ # ')%&(' # ( $&& ! '(
H (( ( Level &$)( # ( ' "#) ' + ( #
($ #!)' *
H &'' ( " #."#) )(($# Slope (# %&'' ( ' ."#)
)(($# $& #( * '!$% $# ( !( &'' ( " #."#)
)(($# Level %( ')'(%
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