Performance Tests
TDS 520A, 524A, 540A, & 544A Service Manual
4Ć53
H + + +*+ * %# $'# +, &) &,+ - - * &%* &% *)%
&. % !,*+ + %)+&) &,+',+ ,%+ # + CH 1 Amplitude
)&,+ % +* + $'# +, * $ &,+ $/ #,+,1
+ )&,% $
H *&%%+ + #-# % + CH 1 % )&%%+ + +& CH 1
+)&, ++%,+&)
'+ *+' *,*+'* % &%#/ * % &%#/ + 0 )1
(,%/ * +& " )
Confirm that the Main and Delayed trigger systems couple trigger signals
from all channels: & % + ')&,) Check Analog Bandwidth, .
%* &% ' 1 "* &,'# % /&, - %&+ &% ++ ')&1
,) & *& +) % * % + * ')&,) + &##&. % %&+.
NOTE
Steps 1 through 4 confirmed trigger sensitivity for the Main and
Delayed triggering systems using the CH 1 input. Doing the proceĆ
dure " %#& %. + ensures that trigger signals are
coupled from all four channels.
When checking delayed triggering sensitivity at 500 MHz, the waveĆ
form record may have some missing interpolated record points. The
waveform is still stably triggered. (See definition of a stable trigger
earlier in this procedure.)
Disconnect the hookup: *&%%+ + # )&$ + %)+&) &,+',+
+ + %',+ &%%+&) & + %%# #*+ +*+
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