Adjustment Procedures
TDS 520A, 524A, 540A, & 544A Service Manual
5Ć15
H &1&"5&%-: 13&44 5)& 4*%&<.&/6 #6550/ -more- 6/5*- PkĆPk
"11&"34 */ 5)& 4*%& .&/6 3&44 5)& 4*%&<.&/6 #6550/ PkĆPk
H 3&44 CLEAR MENU
Confirm that the Probe Compensator signal is within limits for bandwidth:
" Display and measure the test signal:
H 0/*503 5)& CH 1 PkĆPk 3&"%065 8)*-& :06 4&5 5)& 065165 0' 5)&
(&/&3"503 '03 " %*7*4*0/ ; 3&'&3&/$& 4*(/"-
H &5 5)& )03*;0/5"- SCALE 50 /4 "/% 4&5 5)& '3&26&/$: 0' 5)&
(&/&3"503 50 ;
H &"% 5)& .&"463&.&/5 3&46-54 "5 5)& ,<, 3&"%065 0/
4$3&&/
# Check against limits: 5)"5 5)& CH 1 PkĆPk 3&"%065 *4 (3&"5&3
5)"/ 03 &26"- 50
Disconnect the hookup:
" /1-6( 5)& 130#& '30. <50<130#& 5*1 "%"15&3
# ' 46#45&1 # 8"4 1"44&% 5)& 130#& "%+645.&/5 *4 '*/*4)&% &7&34&
5)& */4536$5*0/4 */ *(63& < 0/ 1"(& < 50 3&*/45"-- 5)& 3&53"$5"#-&
)00, 130#& 5*1
$ ' 46#45&1 # 8"4 not 1"44&% -&"7& 5)& 130#& 5*1 &9104&% &.07&
5)& 130#& '30. "/% (0 0/ 50 5)& /&95 130$&%63& Adjust the
Probe Ċ High Frequency Response
Adjust the Probe Ċ High Frequency Response
0 /05 1&3'03. 5)*4 130$&%63& 6/5*- :06 )"7& '*345 $0.1-&5&% 5)& 130$&%63&4
Compensate the Probe "/% Measure Probe Bandwidth 0/ 1"(&4 < "/%
< 3&41&$5*7&-:
0 /05 1&3'03. 5)*4 130$&%63& *' :06 )"7& 46$$&44'6--: $0.1-&5&% Measure
Probe Bandwidth 130#& "%+645.&/5 *4 $0.1-&5&
Equipment Required: /& $"-*#3"5*0/ (&/&3"503 5&. 0/& W 13&$*<
4*0/ $"#-& 5&. 0/& 56//&- %*0%& 16-4&3 5&. 0/& '&."-&<50<'&."-&
"%"15&3 5&. 0/& 50 130#& "%"15&3 5&. 0/& ! 130#&
5&. 0/& ! "55&/6"503 5&. "/% 0/& 4."-- 45"/%"3% 4$3&8%3*7&3
Install the test hookup and preset the oscilloscope controls:
" Access Inner Probe Tip and Adjustment Ports:
H )& 130#& 5*1 4)06-% #& &9104&% '30. 5)& 130$&%63& Measure
Probe Bandwidth. ' /05 '0--08 5)& */4536$5*0/4 */ *(63& < 0/
1"(& < 50 &9104& 5)& 130#& 5*1
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