Download Service Manual SD-22 & SD-26 Sampling Head 070-7227-02

Service Manual
SD-22 & SD-26
Sampling Head
070-7227-02
Warning
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to the Safety Summary prior to performing service.
Please check for change information at the rear
of this manual.
First Printing: May 1993
www.tektronix.com
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WARRANTY
!
! ! ! ! !
! ! ! ! ! ! ! ! ! ! ! !
! THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THIS PRODUCT IN LIEU OF ANY OTHER
WARRANTIES, EXPRESSED OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX' RESPONSIBILITY TO REPAIR OR
REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR
BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS
ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.
Table of Contents
List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
iii
List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
v
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1Ć1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing and Removing the Sampling Head . . . . . . . . . . . . . . .
Packaging for Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
! 1Ć1
1Ć2
1Ć4
1Ć6
1Ć7
$
Checks and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2Ć1
Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using These Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
" ! # ! ! ! ! ! PartĂ1 PowerĆOn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PartĂ2 Dot Transient Response . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PartĂ3 Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PartĂ4 Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PartĂ5 Rise Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PartĂ6 Acquisition Aberrations . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PartĂ7 Coincidence Between Channels . . . . . . . . . . . . . . . . . . . .
PartĂ8 Maximum Signal Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . .
PartĂ9 Isolation Between Channels . . . . . . . . . . . . . . . . . . . . . . . .
2Ć3
2Ć5
$
$
$
$
2Ć8
2Ć10
2Ć16
2Ć20
2Ć23
2Ć26
2Ć30
2Ć33
2Ć36
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3Ć1
Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3Ć1
$
General Information
Checks and Adjustments
Maintenance
SDĆ22 & SDĆ26 Service Manual
i
Table of Contents
# ! " #
#
#
#
Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4Ć1
System Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loop Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Offset Null . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4Ć1
4Ć2
4Ć3
Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5Ć1
Parts Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Replaceable Parts List . . . . . . . . . . . . . . . . . . . . . . . . . .
5Ć1
5Ć2
Theory of Operation
Replaceable Parts
ii
Contents
List of Figures
#!-* 21&)%#'! (&)*,&',+ #' ' ' #!-* 21'+,%%#'! &)%#'! #' ' '+,*-&', #!-* 21(,#('+ ( (',*(%+ ' ('',(*+ (' #' *&
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+ SDĆ22 & SDĆ26 Service Manual
2
2
2
2
2
2
2
2
iii
iv
List of Tables
&('!# " "! "! &('!" #" &(' " "! &('"$ #!""% " " !"" ! SDĆ22 & SDĆ26 Service Manual
(
(
(
(
v
vi
General Information
' '(#" *' ( "#&!(#" " (# $$ , $#+& (# ( . . !$ " '
(, "#&!(#" ' + ' "#&!(#" #" "'( " " &!#*" (
'!$ " $" #& '$!"( " "*&#"!"( #"(#"' ')
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Introduction
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)' " ( &' ( !$ " ' #'#$' ( . ) (.
"" "( " ( &' #!!)"(#"' " " ,-&'
SDĆ22 & SDĆ26 Service Manual
1Ć1
General Information
Safety Summary
! ! #
! ! ! !
Terms in Manuals
CAUTION ! !
WARNING ! ! Terms on Equipment
CAUTION ! "
!
"
! DANGER ! "
! #
Symbols in Manuals
Static Sensitive Devices
Symbols on Equipment
DANGER
High Voltage
Protective
ground (earth)
terminal
ATTENTION
Refer to
manual
Grounding the Instrument
! # ! ! #
Danger Arising from Loss of Ground
# ! 1Ć2
General Information
General Information
Do Not Operate in Explosive Atmospheres
SDĆ22 & SDĆ26 Service Manual
1Ć3
General Information
Installing and
Removing the
Sampling Head
# )# ! '# ' "&'%(!"' &' ' "&'%(!"'& &*' '# #% "&' " #% %!#)" ' &!$ " - -
!$ " & "'# ' #" # ' %#"' $"
#!$%'!"'& # ' %& ' !$ " & #&#$& #% %& #!!("'#"& " " +,%& (% - &#*& ' %#"'
$" # " "&'%(!"' " ' #'#"& # ' &!$ " #!$%'!"'&
Sampling Head
Compartments
11801B
Sampling Head
Compartments
CSA 803A
Power Only Sampling
Head Compartments
Figure 1Ć1:ăSampling Head Compartments in an 11801B and a
CSA 803A
1Ć4
General Information
General Information
" " !%" !" " " ! "" !%& #! " %" !!# " !
! !" "# " '% ! % " "" " ! "
# '
CAUTION
To prevent damage to your instrument or sampling head, never
install or remove a sampling head when the ON/STANDBY switch
is ON.
If the green indicator light remains on when the STANDBY position
is selected, then the switch has been left internally disabled after
the servicing of the power supply. To enable the ON/STANDBY
switch, refer to the Maintenance section of the Service Manual for
your mainframe instrument.
$ " ! !" #" !" " !" #"!
!%" " # " '% ! % "
!%& # #" " ! LockĆDown
Screw
Sampling
Head
Figure 1Ć2:ăInstalling a Sampling Head in an Instrument
SDĆ22 & SDĆ26 Service Manual
1Ć5
General Information
Packaging for
Shipment
#"&& &) ! %(& ' "%! %'"! ! #! '" ' # & #! *! &##! ' , "
% '%!&#"%''"!
'' ' '" ' & #! ' & &## '" ,"(% " '%"!+
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'
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ăStep 1:ă
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ăStep 2:ă'! "%%(' %"% %'"! *' !& !&"!& '
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ăStep 5:ă ' %'"! *' &##! '# "% *' !(&'% &'#&
ăStep 6:ă% ' %&& " ' '%"!+ &%) !'% ! ,"(% %'(%!
%&& "! ' %'"! ! "! "% "% #%" !!' #&
1Ć6
General Information
General Information
Operating
Environment
$ #! "! # ! " ! Operating Temperature
! ! $ ! ! !!" !$
_ _ ! ! ! !!" _ ! _ ! ! ! !!" "! ! !
! $ ! ! ! ! !!" % $
$ "! $" ! ! !
"% " ! !"! ! "
! ! !!" ! "& ! # ! !"!
SDĆ22 & SDĆ26 Service Manual
1Ć7
1Ć8
Checks and Adjustments
) )*%$ %$*$) &(%+() *% ! * )&*%$) $ #)+(1
#$* "#*) ")* $ " 1 &*%$ %( )+(#$* #* )
")* * * $$$ % &(* ) -"" ) &(%+() %$*$ %$".
! )*&) )$ * 1 1 #&"$ ) , $% $*($"
+)*#$*)
&(%+() $ *) )*%$ &(%, "%" )'+$ % !) %(
&(%(#$ %#&($), &(%(#$ ,(*%$ &(%+( *% ,(.
** * )#&"$ #*) )&*%$) % +$*%$"". *)* * )#1
&"$ &(%(# * &(*) $ " 1 - , /.) $ * +$1
*%$" )* %"+#$
( *% * %( #%( $%(#1
*%$ %+* )&*%$) $ )#&"$ %&(*%$ ( *% " 1 %(
$%(#*%$ %$($$ *)* '+&#$* +) $ * )*+&)
TableĂ2Ć1:ăMeasurement Limits and Specifications
Part and Description
Measurement
Limit
Specification
Functional
Test
(*0 %-(1$
$%$
$%$
.)
(*0 %* ($)$*
)&%$)
# -* +*%#*
"(*%$
v
((%(
.)
# -* +*%#*
"(*%$
v
((%(
$%
# -* +"*
)**$)
" ((%(
$%
-*%+* +*%#*
"(*%$
+)* *% $%
* (*0 )*
)*
)* $ -*
(&**%$ (*
SDĆ22 & SDĆ26 Service Manual
" #
.)
"
#
$%
2Ć1
Checks and Adjustments
TableĂ2Ć1:ăMeasurement Limits and Specifications (Cont.)
Part and Description
Measurement
Limit
Specification
-/5 *&."
)*
6 (+'&)$ "!
(**/%&)$ *)
(**/%&)$ *##
v m
v m
6 (+'&)$ "!
)!
*1"
(**/%&)$ *)
(**/%&)$ *##
v m
v (
6 (+'&)$ "!
)!
"'*2
(**/%&)$ *)
(**/%&)$ *##
v m
v (
-/5 &." &("
4".
6 (+'&)$ "!
+.
6 (+'&)$ "!
+.
-/5 ,0&.&/&*)
"--/&*). 2&/%
.*0- "
/* +.
+. /* ).
). /* ).
). )! 0+
). /* +.
)*
/* "
"
"
"
+.
-/5 *&) &!") "
"/2"") %))"'.
-/5 3&(0( &$)'
*'/$"
-/5 .*'/&*) "/2"")
%))"'.
2Ć2
Functional
Test
*# ./"+
(+'&/0!"
)*
)*
)*
Checks and Adjustments
Checks and Adjustments
Test Equipment
Table 2Ć2 lists test equipment suggested for use with this manual. ProceĆ
dure steps are based on the test equipment examples given, but other
equipment with similar specifications may be substituted. Test results, setup
information, and related connectors and adapters may be altered by the use
of different equipment.
TableĂ2Ć2:ăTest Equipment
SDĆ22 & SDĆ26 Service Manual
Description
Minimum
Specification
Examples of Applicable
Test Equipment
11800 Series
Oscilloscope or
CSA 803 Series
Communications
Signal Analyzer
Tektronix digital
sampling oscilloscope
Tektronix 11801/A/B, 11802
Digital Sampling Oscilloscope
Tektronix CSA 803, CSA
803A Communications Signal
Analyzer
Pulse Generator
1 ns rise time, 5 V outĆ
put, 10 Hz to 250 MHz
frequency range
Tektronix PG 502 Pulse
Generator with a TM 500
Series Power Module
Time Mark
Generator
1 ns through 5 s
markers in a 1-2-5
sequence, at least 5
parts in 10& accuracy
Tektronix TG 501A Time Mark
Generator with a TM 500
Series Power Module
Calibration
Generator
DC output, 0.5%
accuracy 1 V output
amplitude
Tektronix PG 506A Calibration
Generator with a TM 500
Series Power Module
Calibration Step
Generator
Tektronix Part 067-1338-0X
Calibration Step Generator
(where X represents either a
0, 1, 2, 3, 5, or 6; depending
on the power supply approĆ
priate for your country. Refer
to Section 5, )
System Controller Any compatible controlĆ
ler with MS DOS and a
serial port configured
for COM 1
IBM compatible PC with
terminal emulation software
50 W Termination,
SMA connectors
Impedance 50 W, SMA
male connector
Tektronix Part 015-1022-00
50 W Termination,
BNC connectors
Impedance 50 W, BNC
connectors
Tektronix Part 011-0049-01
Short Circuit
Termination, SMA
connectors
Male SMA compatible
Tektronix Part 015-1020-00
Coaxial Cable,
50 W (2 required)
50 W, 36Ćinch, BNC
male connectors
Tektronix Part 012-0482-00
Serial Cable
10Ćft RSĆ232ĆC Cable
Tektronix Part 012-0911-00
2Ć3
Checks and Adjustments
TableĂ2Ć2:ăTest Equipment (Cont.)
Description
Minimum
Specification
Examples of Applicable
Test Equipment
!%# %
#"&#
% %# ) #% %%&% # %%&% %# ) #% %%&% # %%&% %# ) #% #$% %#!
%# ) #% %% %# %
%# ) #% + $
#$
*#'
#(#'#
2Ć4
%!
Checks and Adjustments
Checks and Adjustments
Using These
Procedures
&(* $) -* )*+& ""+)*(*%$ ** )%-) * *)* '+&#$* $
%- *% %$$* * ( *% " 1 %( $ .#&" % * *)* '+&#$* %(
&(*
Conventions in this Manual
$ *) &(%+() * %""%-$ %$,$*%$) ( +)
H
"**() -*$ * %/ % *.* $*/ (%$* &$" %$*(%")
$*%() $ %$$*%() %( .#&" %$ * %)""%)%&
$ )#&"$ H
Bold "**() $*/ #$+ "") $ )&"/ #)))
H
$*" &*" "**() $*/ %$$*%() %$*(%") $ $*%() %(
.#&" %)*%$ %$ ))%* *)* '+&#$* $*" &*" "**()
")% $*/ +)*#$*) $) * )#&"$ $ )%# )*&) * ()* -%( ) *"0 *% $*/ )*& ** %$*$) &(%(#$ ,(*%$ $%( $ +)*#$* $)*(+*%$ %( .#&" Check ) * ()* -%( $ * **" % )*& $ "*(" )&*%$ )
! Adjust &&() $ * **" * )*& $,%",) $ "*(" +)*1
#$* Examine ) * ()* -%( $ * **" * )*& %$($) #)+(#$*
"#*) ** $* -*( * )#&"$ ) %&(*$ &(%&("/ *)
"#*) ( $%* *% $*(&(* ) "*(" )&*%$)
Initialized and Stored Settings
* * $$$ % #%)* )*&) * +)( ) $)*(+* *% Initialize * $)*(+1
#$* ) &(* % * )*+& Initialize *+( ,"" *(%+ *
#$+ &()*) "" $)*(+#$* %$*(%") $ +$*%$) *% !$%-$ ,"1
+) $*"0$ * $)*(+#$* * * $$$ % )*& "#$*) *
&%))"*/ % )**$) (%# &(,%+) &(*) +)$ ((%$%+) %( %$+)$
()+"*)
Menu Selections and Measurement Techniques
*") %$ #)+(#$* *$'+) $ $)*(+*%$) %( #!$ #$+
)"*%$) ( $(""/ $%* $"+ $ *) #$+" %#&($), 1
)(&*%$) % #$+) $ $)*(+#$* #$(# *+() ( "%* $ *
User Manual %( /%+( $)*(+#$* $ * SDĆ22 & SDĆ26 Sampling Heads
User Manual
SDĆ22 & SDĆ26 Service Manual
2Ć5
Checks and Adjustments
Setup Illustrations
% %# ) "# $ ## " $ "# %$# )*" # $ " #$"%$ $# "%"# +" #$"%$ # #' "%"
$ ($ $ $"# )%" " #$"%$ ) "
" $$ #' $ %#$"$
"$%" $ ## "# %$#
)*" & ) $' # !%#$ "$$# #
" $ %" $ "# ## # $# $"#
$"# #$"%$ " #' %" ,
2Ć6
Checks and Adjustments
Checks and Adjustments
11801
Left Sampling Head
Compartment
Calibrator Output
Trigger Input
Internal Clock Output
11802
Left Sampling Head
Compartment
Calibrator Output
Trigger Input
Internal Clock Output
11801A and 11801B
Left Sampling Head
Compartment
Calibrator Output
Antistatic Connection
Trigger Input
Internal Clock Output
CSA 803 and CSA 803A
Left Sampling Head
Compartment
Calibrator Output
Antistatic Connection
Trigger Inputs
Internal Clock Output
Figure 2Ć1:ăLocations of Controls and Connectors on Mainframe Instruments
SDĆ22 & SDĆ26 Service Manual
2Ć7
Checks and Adjustments
PartĂ1
PowerĆOn
!,"),' .$%- *,. 0%.$%( .$! '%!(. .!'*!,./,! ,(#! )" _ .)
_ Setup to PowerĆon
11801B
Sampling
Head
CSA 803A
Sampling
Head
Procedure to PowerĆOn
ăStep 1:ă!. .$! ")&&)0%(# %( .$! ), !, &%-.! '*&%(# !
). %(-.&&! 1!.
(-.,/'!(. %(",'!
-0%.$ ăStep 2:ă(-.&& .$! 2 ), 2 -'*&%(# $! %( .$! &!". *&/#2%(
)'*,.'!(.
ăStep 3:ă%.$ .$! %(-.,/'!(.- ,!, *(!& -!. .) )((!. .$! %(-.,/'!(. .) -/%.&! *)0!, -)/,!
ăStep 4:ă!. .$! ,!, *(!& .) ( .$!(
.$! %(-.,/'!(.- ",)(. *(!& -0%.$ .) $!( .$! %(-.,/'!(. %- "%,-. %(-.&&! .$! ,!, *(!& -$)/& ! -!. .) ( ,!'%( %( .$! *)-%.%)( $!( /-! .$!
",)(. *(!& -0%.$ .) *!,"),' && -/-!+/!(. *)0!,
-0%.$%(#
2Ć8
Checks and Adjustments
Checks and Adjustments
ăStep 5:ă H
H
H
H
H
SDĆ22 & SDĆ26 Service Manual
2Ć9
Checks and Adjustments
PartĂ2
Dot Transient
Response
!
Measurement Limits
H
v H
" Specifications
2Ć10
Checks and Adjustments
Checks and Adjustments
Setup to Check Dot Transient Response
CH 1
11801B
5X Attenuator
Pulse
Generator
)!)
,+',+
%
2X Attenuator
(not connected yet)
Internal Clock Output
CSA 803A
CH 1
5X Attenuator
Pulse
Generator
)!)
,+',+
%
Internal Clock Output
2X Attenuator
(not connected yet)
Procedure to Check Dot Transient Response
ăStep 1:ă%!+!#!0 + !%*+),$%+ *++!%* + % $" + &##&.!% *+1
+!%* !% + &)) #!*+
$'#!% % %
%*+),$%+ !%)$
Vert Size: M1 $!-!*!&%
,++&% ')**
Source Internal Clock
Main Pos Min
Main Size %*!-!*!&%
,#* %)+&)
" )$!%+&) ,++&% ',## &,+
)!) &,) /+)%# )!)
,+',+ *(,) .-
SDĆ22 & SDĆ26 Service Manual
2Ć11
Checks and Adjustments
Examine dot response at 250 mV with automatic calibration setĆ
tings 9 #7 0&1'/1-*.( 3&02 3)1/4() ăStep 2:ă&3 3)& 04,2& (&.&1"3/12 "-0,*34%& '/1 " - %*20,"7
ăStep 3:ă&3 3)& Vert Offset : MI 2/ 3)"3 3)& 23&0 *2 "001/6*-"3&,7 $&.8
3&1&% /. 3)& 2$1&&.
ăStep 4:ă1&22 3)& ! #433/. ".% 3/4$) Enhanced Accuracy
".% &1*&2 /1 01&22 3)& !
#433/. ăStep 5:ă/4$) Loop Gain
ăStep 6:ă/4$) Automatic Calibrate, ".% 3)&. Proceed *. 3)& Loop
Gain Calibration 0/0840 -&.4
ăStep 7:ă/4$) Exit *. 3)& Loop Gain ",*#1"3*/. 0/0840 -&.4
ăStep 8:ă&3 3)& 04,2& (&.&1"3/12 "-0,*34%& '/1 " - 23&0 %*20,"7
ăStep 9:ă1&22 3)&
#433/. ".% 3)&. 3/4$) Horizontal Desc
ăStep 10:ă/4$) Main Record Length *. 3)& Horizontal Description
0/0840 -&.4 ".% 3)&. 2&3 3)& 3/0 +./# '/1 " Main Record Length /'
ăStep 11:ă1&22 3)& ! #433/. ".% 3)&. Instr Options
ăStep 12:ă&3 Vectored Trace 3/ Off *. 3)& Instrument Options 0/0840
-&.4
ăStep 13:ă/4$) Display Intensity *. 3)& Instrument Options 0/0840
-&.4 ".% 3)&. 2&3 3)& 3/0 +./# '/1 90% *.3&.2*37
ăStep 14:ă/4$) Exit
ăStep 15:ă/4$) Cursors /. 3)& 3/0 /' 3)& 2$1&&.
ăStep 16:ă/4$) Cursor Type ".% 3)&. Horizontal Bars *. 3)& Cursor
Type 0/0840 -&.4
ăStep 17:ă/4$) Exit.
ăStep 18:ă&3 Cursor 1 3/0 +./# 3/ 3)& "5&1"(& /' 3)& #/33/- /' 3)&
04,2& #&'/1& 3)& 23&0
ăStep 19:ă&3 Cursor 2 #/33/- +./# 3/ 3)& 3/0 /' 3)& 23&0
ăStep 20:ă&"% DV "2 3)& 0&"+83/80&"+ 23&0 "-0,*34%& ".% 3)&. 1&$/1%
3)*2 5",4& "2 V '/1 ,"3&1 42&
ăStep 21:ă1&22 3)& ! #433/. ".% 3/4$) Enhanced Accuracy
".% &1*&2 /1 01&22 3)& !
#433/. ăStep 22:ă/4$) Loop Gain ".% 3)&. 3)& $)"..&, 7/4 "1& 42*.( *. 3)&
Loop Gain Calibration 0/0840 -&.4
2Ć12
Checks and Adjustments
Checks and Adjustments
ăStep 23:ă$1 1'$ Divide by Two Mode 1- On (, 1'$ Loop Gain
Calibration .-.52. +$,2
ăStep 24:ă -2"' Exit (, 1'$ Loop Gain Calibration .-.52. +$,2
ăStep 25:ă-2"' Cursors 1 1'$ 1-. -% 1'$ 0"/$$,
ăStep 26:ă$1 Cursor 1 1- 1'$ 3$/ &$ -% 1'$ !-11-+ -% 1'$ .2*0$ !$%-/$
1'$ 01$.
ăStep 27:ă$1 Cursor 2 1- 1'$ 3$/ &$ -% 1'$ !-11-+ -% 1'$ .2*0$ 2,#$/
1'$ 01$.
ăStep 28:ă$ # DV ,# 1'$, /$"-/# 1'(0 3 *2$ 0 VL %-/ * 1$/ 20$
ăStep 29:ă$1 Cursor 2 1- 1'$ 3$/ &$ -% 1'$ 1-. -% 1'$ .2*0$
ăStep 30:ă$ # DV ,# 1'$, /$"-/# 1'(0 3 *2$ 0 VH %-/ * 1$/ 20$.
ăStep 31:ă 1' 1 1'$ ,$& 1(3$ #-1 /$0.-,0$ $//-/
VL/VH (0 "
ăStep 32:ă 1' 1 1'$ .-0(1(3$ #-1 /$0.-,0$ $//-/
VHV)VVL (0 v
Check dot response at 500 mV with automatic calibration setĆ
tings 6 !4 .$/%-/+(,& 1$.0 1'/-2&' ăStep 33:ă/$00 1'$ !211-, ,# 1-2"' Enhanced Accuracy
,# $/($0 -/ ./$00 1'$ !211-, ăStep 34:ă-2"' Loop Gain
ăStep 35:ă$1 Divide by Two Mode 1- Off (, 1'$ Loop Gain Calibration
.-.52. +$,2
ăStep 36:ă-2"' Exit
ăStep 37:ă$1 1'$ Vert Size:M1 1- +#(3
ăStep 38:ă$1 1'$ .2*0$ &$,$/ 1-/0 +.*(12#$ %-/
+ 01$. #(0.* 4
ăStep 39:ă-2"' Cursors -, 1'$ 1-. -% 1'$ 0"/$$,
ăStep 40:ă$1 Cursor 1 1- 1'$ 3$/ &$ -% 1'$ !-11-+ -% 1'$ .2*0$ !$%-/$
1'$ 01$.
ăStep 41:ă$1 Cursor 2 1- 1'$ 3$/ &$ -% 1'$ 1-. -% 1'$ .2*0$
ăStep 42:ă$ # DV 0 1'$ .$ )51-5.$ ) 01$. +.*(12#$ ,# 1'$, /$"-/#
1'(0 3 *2$ 0 V %-/ * 1$/ 20$
ăStep 43:ă/$00 1'$ !211-, ,# 1-2"' Enhanced Accuracy
,# $/($0 -/ ./$00 1'$ !211-, SDĆ22 & SDĆ26 Service Manual
2Ć13
Checks and Adjustments
ăStep 44:ă-2#( Loop Gain !,$ 1(%, 1(% #(!,,%* ,2+"%/ 4-2 !/% 20),'
), 1(% Loop Gain Calibration .-.52. +%,2
ăStep 45:ă%1 Divide by Two Mode 1- On ), 1(% Loop Gain Calibration
.-.52. +%,2
ăStep 46:ă-2#( Cursors !1 1(% 1-. -& 1(% 0#/%%,
ăStep 47:ă%1 Cursor 1 1- 1(% !3%/!'% -& 1(% "-11-+ -& 1(% .2*0% "%&-/%
1(% 01%.
ăStep 48:ă%1 Cursor 2 1- 1(% !3%/!'% -& 1(% "-11-+ -& 1(% .2*0% !&1%/
1(% 01%.
ăStep 49:ă%!$ 1(% DV 3!*2% !,$ 1(%, /%#-/$ 1()0 3!*2% !0 VL &-/ *!1%/
20%
ăStep 50:ă%1 Cursor 2 1- 1(% !3%/!'% -& 1(% 1-. -& 1(% .2*0%
ăStep 51:ă%!$ DV !,$ 1(%, /%#-/$ 1()0 3!*2% !0 VH &-/ *!1%/ 20%
ăStep 52:ă 1(!1 1(% ,%'!1)3% $-1 /%0.-,0% %//-/
VL VH )0 v
ăStep 53:ă 1(!1 1(% .-0)1)3% $-1 /%0.-,0% %//-/
VHV)VVL )0 v
Check dot response at 500 mV with default settings 6 "4 .%/&-/+5
),' 1%.0 1(/-2'( ăStep 54:ă/%00 1(% "211-, !,$ 1-2#( Enhanced Accuracy
!,$ %/)%0 -/ ./%00 1(% "211-, ăStep 55:ă-2#( Loop Gain
ăStep 56:ă-2#( Recall Defaults ), 1(% Loop Gain Calibration .-.52.
+%,2
ăStep 57:ă-2#( Exit
ăStep 58:ă-2#( Cursors !1 1(% 1-. -& 1(% 0#/%%,
ăStep 59:ă%1 Cursor 1 1- 1(% !3%/!'% -& 1(% "-11-+ -& 1(% .2*0% "%&-/%
1(% 01%.
ăStep 60:ă%1 Cursor 2 1- 1(% !3%/!'% -& 1(% "-11-+ -& 1(% .2*0% !&1%/
1(% 01%.
ăStep 61:ă%!$ 1(% DV 3!*2% !,$ 1(%, /%#-/$ 1()0 3!*2% !0 VL &-/ *!1%/
20%
ăStep 62:ă%1 Cursor 2 1- 1(% !3%/!'% -& 1(% 1-. -& 1(% .2*0% !,$ /%!$
DV %#-/$ 1()0 3!*2% !0 VH
ăStep 63:ă 1(!1 1(% ,%'!1)3% $-1 /%0.-,0% %//-/
VL/ VH )0 v
2Ć14
Checks and Adjustments
Checks and Adjustments
Check dot response at 1V with manual calibration settings 8 "6
.%/&-/+),' 1%.0 1(/-2'( ăStep 64:ă/%00 1(% "211-, !,$ 1-2#( Enhanced Accuracy
!,$ %/)%0 -/ ./%00 1(% "211-, ăStep 65:ă-2#( Loop Gain
ăStep 66:ă%1 1(% Divide by Two Mode 1- Off ), 1(% Loop Gain
Calibration .-.72. +%,2
ăStep 67:ă-2#( Exit.
ăStep 68:ă%+-3% 1(% !11%,2!1-/ !,$ 1(%, #-,,%#1 1(% !11%,2!1-/ "%14%%, 1(% #(!,,%* 6-2 !/% 20),' !,$ 1(% #-!5)!* #!"*%
ăStep 69:ă%1 1(% Vert Size:M1 1- +$)3
ăStep 70:ă%1 1(% .2*0% '%,%/!1-/0 !+.*)12$% &-/ ! "
01%.
$)0.*!6
ăStep 71:ă/%00 1(% "211-, !,$ 1-2#( Enhanced Accuracy
!,$ %/)%0 -/ ./%00 1(% "211-, ăStep 72:ă-2#( Loop Gain
ăStep 73:ă-2#( 1(% #(!,,%* ,2+"%/ 6-2 !/% 20),' ), 1(% Loop Gain
Calibration .-.72. +%,2
ăStep 74:ă%1 1(% Divide by Two Mode 1- On !,$ 1(%, 1-2#( Manual
Calibrate ), 1(% Loop Gain Calibration .-.72. +%,2
ăStep 75:ă-2#( Exit
ăStep 76:ă 1(!1 1(% !+.*)12$% -& 1(% .2*0% +%!02/%$ &/-+ 1(%
!3%/!'% -& 1(% *%3%* 2,$%/ 1(% .2*0% 1- 1(% !3%/!'% -& 1(% 1-. -& 1(%
.2*0% #!, "% 0%1 4)1( 1(% +!,2!* #!*)"/!1)-, 0%11),'0 1- "% w
ăStep 77:ă%.%!1 1%.0 1(/-2'( &-/ SDĆ22 & SDĆ26 Service Manual
2Ć15
Checks and Adjustments
PartĂ3
Offset
Measurement Limits
" Specifications
" Setup to Examine Offset
W 11801B
CSA 803A
2Ć16
W Checks and Adjustments
Checks and Adjustments
Procedure to Examine Offset
ăStep 1:ă.)3)!,)7% 3(% ).2314-%.3 2%33).'2 3(%. -!+% 3(% &/,,/6).' 2%38
3).'2 ). 3(% /1$%1 ,)23%$
!-0,).' %!$
.&& .
.2314-%.3 !).&1!-%
"433/. 01%22
Source Internal Clock
"433/. 01%22
"433/. %1)%2 01%22
Enhanced Accuracy %1)%2 3/4#(
Calibrate All 0/0840 -%.4 Recall Defaults
ăStep 2:ă/4#( Offset Null ). 3(% Enhanced Accuracy -%.4
ăStep 3:ă/4#( Manual Calibrate ). 3(% Offset Nulling 0/0840 -%.4
ăStep 4:ă/4#( 3(% Offset Null: M1 2%,%#3/1 0 !.$ 3(%. Enter ). 3(%
Numeric Entry & Knob Res 0/0840 -%.4
ăStep 5:ă/4#( 3(% 5%13)#!, )#/. !.$ 3(%. 2%3 Vert Size: M1 3/ āā-$)5
ăStep 6:ă1%22 3(% "433/.
ăStep 7:ă/4#( Measurements !.$ 3(%. Mean ). 3(% Measurements
0/0840 -%.4
ăStep 8:ă/4#( Mean ). 3(% -!*/1 -%.4 !.$ 3(%. 2%3 Data
Interval 3/ whole zone ). 3(% Mean 0/0840 -%.4
ăStep 9:ă 3(!3 Mean )2 " -
ăStep 10:ă1%22 3(% "433/. !.$ 3/4#( Enhanced Accuracy
!.$ %1)%2 /1 01%22 3(% "433/. ăStep 11:ă/4#( Offset Null
ăStep 12:ă/4#( Automatic Calibrate !.$ 3(%. Proceed ). 3(% Offset
Nulling 0/0840 -%.4
ăStep 13:ă1%22 3(% "433/.
ăStep 14:ă
3(!3 3(% Mean /&&2%3 )2 " -
ăStep 15:ă%0%!3 3%02 3(1/4'( &/1 SDĆ22 & SDĆ26 Service Manual
2Ć17
Checks and Adjustments
Setup to Check Offset Change with Repetition Rate
11801B
W Time Mark
Generator
10-10
W W W CSA 803A
Time Mark
Generator
10-10
W W Procedure to Check Offset Change with Repetition Rate
ăStep 1:ă+&0&)&3" 0%" &+/0.1*"+0 /"00&+$/ 0%"+ *(" 0%" #,)),2&+$ /"04
0&+$/ &+ 0%" ,.!". )&/0"!
*-)&+$ "!
+## +
+/0.1*"+0 &+#.*"
100,+ -."//
100,+ ".&"/ -."//
Enhanced Accuracy ".&"/ 0,1 %
Calibrate All -,-41- *"+1 Recall Defaults
&*" .( "+".0,.
.(". /" m/
ăStep 2:ă."// 0%" 100,+ +! 0%"+ 0,1 % Level
ăStep 3:ă!'1/0 0%" Trig Level 1+0&) 0. " --"./
2Ć18
Checks and Adjustments
Checks and Adjustments
ăStep 4:ă,1 % 0%" 2".0& ) & ,+ +! 0%"+ /"0 0%" Vert Size: M1 0,
*!&2
ăStep 5:ă"0 Vert Offset: M1 /, 0%0 0%" 0. " &/ 2".0& ))4 "+0"."! ,+
0%" / .""+
ăStep 6:ă"0 0%" 0&*" *.( $"+".0,./ *.(". /"00&+$ 0, */
ăStep 7:ă."// 0%" 100,+ +! 0%"+ 0,1 % Acquire Desc
ăStep 8:ă"0 Average N 0, On +! 0%"+ 0,1 % Set Avg N
ăStep 9:ă"0 Average N 0, 8 3&0% 0%" 0,- (+,
ăStep 10:ă&0 1+0&) 0%" Acquire Desc /")" 0,. &+ 0%" *',.
*"+1 /%,3/ 0%0 "&$%0 2".$"/ %2" ""+ ,*-)"0"!
ăStep 11:ă."// 0%" 100,+
ăStep 12:ă,1 % Measurements +! 0%"+ Mean &+ 0%" Measurements
-,-51- *"+1
ăStep 13:ă,1 % Compare & References &+ 0%" *',. *"+1
ăStep 14:ă,1 % Save Current Meas Values as References +! 0%"+
/"0 Compare 0, On
ăStep 15:ă"0 0%" 0&*" *.( $"+".0,./ *.(". /"00&+$ 0, */
ăStep 16:ă&0 1+0&) 0%" Acquire Desc /")" 0,. &+ 0%" *',.
*"+1 /%,3/ 0%0 "&$%0 2".$"/ %2" ""+ ,*-)"0"!
ăStep 17:ă 0%0 DMean ,##/"0 3&0% ."-"0&0&,+ .0" &/ "
*
ăStep 18:ă,+0&+1" 0, !" ."/" 0%" 0&*" *.( $"+".0,./ *.(". /"05
0&+$ +! ."-"0 0"- #,. " % /"00&+$ !,3+ 0, m/
ăStep 19:ă."// 0%" 100,+
ăStep 20:ă&/ ,++" 0 0%" W 0".*&+0&,+ #.,* 0%" &+-10 +!
,++" 0 &0 0, 0%" &+-10
ăStep 21:ă"-"0 0"-/ 0%.,1$% #,. SDĆ22 & SDĆ26 Service Manual
2Ć19
Checks and Adjustments
PartĂ4
Noise
Measurement Limits SDĆ22
m
m
Measurement Limits SDĆ26 (SN B020440 and above)
m
Measurement Limits SDĆ26 (SN B010339 and below)
m
Setup to Examine Noise
11801B
CH 1
50 W Termination
(not connected yet)
12I RF Cable
CH 1 50 W Termination
CSA 803A
(not connected yet)
2Ć20
12I RF Cable
Checks and Adjustments
Checks and Adjustments
Procedure to Examine Noise
ăStep 1:ă/*4*"-*9& 4)& */3425.&/4 3&44*/(3 4)&/ .",& 4)& '0--07*/( 3&4:
4*/(3 */ 4)& 02%&2 -*34&%
".1-*/( &"%
/'' /
/3425.&/4 "*/'2".&
#5440/ 12&33
Source Internal Clock
! #5440/ 12&33
! #5440/ &2*&3 12&33
Enhanced Accuracy &2*&3 405$)
Calibrate All 101:51 .&/5 Recall Defaults
ăStep 2:ă05$) Loop Gain */ 4)& Enhanced Accuracy .&/5
ăStep 3:ă*3$0//&$4 4)& 4&2.*/"4*0/ '20. 4)& */154 "/% $0/:
/&$4 4)& 40 4)& */154 4)205() 4)& :*/$) $"#-&
ăStep 4:ă05$) 4)& $)"//&- /5.#&2 805 "2& 53*/( Automatic Calibrate,
"/% 4)&/ Proceed */ 4)& Loop Gain Calibration 101:51 .&/5
ăStep 5:ă*3$0//&$4 4)& '20. 4)& */154 "/% 2&$0/:
/&$4 4)& 4&2.*/"4*0/
ăStep 6:ă2&33 4)&
#5440/ "/% 4)&/ 405$) Acquire Desc.
ăStep 7:ă&4 Average N 40 On
ăStep 8:ă2&33 4)& #5440/
ăStep 9:ă05$) 4)& 6&24*$"- *$0/ &4 4)& Vert Size: M1 40 .%*6
ăStep 10:ă05$) Def Tra "4 4)& 401 0' 4)& 3$2&&/
ăStep 11:ă/ 4)& Vertical Description 101:51 .&/5 405$) 4)& '0--07*/(
3&-&$4023 */ 4)& 02%&2 (*6&/
Mainframe &2*&3 1 - Avg ( Mainframe &2*&3 1 )
Enter Desc
ăStep 12:ă2&33 4)& #5440/ "/% 4)&/ 405$) Measurements
ăStep 13:ă05$) RMS */ 4)& Measurements 101:51 .&/5 "/% 4)&/
RMS */ 4)& ."+02 .&/5
ăStep 14:ă&4 Data Interval 40 whole zone */ 4)& RMS 101:51 .&/5
SDĆ22 & SDĆ26 Service Manual
2Ć21
Checks and Adjustments
ăStep 15:ă /&/ RMS '. v $+- /&# 3 ),('*%
#"
/&/ RMS '. v ) $+- /&# 3 ),('*% #"
*" +1#
/&/ RMS '. v ) $+- /&# 3 ),('*% #"
#(+2
ăStep 16:ă-#.. /&# 0//+*
ăStep 17:ă+0!& Sampling Head Fnc's *" /&#* .#/ Smoothing /+ On
'* /&# Sampling Head Functions ,+,30, )#*0
ăStep 18:ă-#.. /&# 0//+*
ăStep 19:ă /&/ RMS '. v $+- /&# 3 ),('*%
#"
/&/ RMS '. v
$+- /&# 3 ),('*% #"
*" +1#
/&/ RMS '. v $+- /&# 3 ),('*% #"
#(+2
ăStep 20:ă#,#/ /#,. /&-+0%& $+- 2Ć22
Checks and Adjustments
Checks and Adjustments
PartĂ5
Rise Time
" ! ! Specifications
$ $
$ Setup to Check Rise Time
11801B
Calibration Step
Generator
Calibration Step
Generator
Calibration Step
Generator
"
!#
!
#
CSA 803A
Calibration Step
Generator
Calibration Step
Generator
Calibration Step
Generator
"
!#
!
#
SDĆ22 & SDĆ26 Service Manual
2Ć23
Checks and Adjustments
Procedure to Check Rise Time
ăStep 1:ă/*4*"-*9& 4)& */3425.&/4 3&44*/(3 4)&/ .",& 4)& '0--07*/( 3&4:
4*/(3 */ 4)& 02%&2 -*34&%
".1-*/( &"%
/'' /
/3425.&/4 "*/'2".&
! #5440/ 12&33
! #5440/ &2*&3 12&33
Enhanced Accuracy &2*&3 405$)
Calibrate All 101:51 .&/5 Recall Defaults
#5440/ 12&33
Source Internal Clock
"-*#2"4*0/ 34&1 (&/&2"402
! 37*4$) ăStep 2:ă2&33 4)& #5440/
ăStep 3:ă2&33 4)&
#5440/ "/% 4)&/ 405$) Horizontal Desc
ăStep 4:ă05$) Main Record Length "/% 4)&/ 3&4 Main Record Len 40
7*4) 4)& 401 ,/0#
ăStep 5:ă05$) Acquire Desc */ 4)&
."+02 .&/5
ăStep 6:ă&4 Average N 40 On "/% 4)&/ 405$) Set Avg N
ăStep 7:ă&4 Average N 40 7*4) 4)& 401 ,/0#
ăStep 8:ă05$) 4)& )02*90/4"- /3%*6
*$0/ "/% 4)&/ 3&4 4)& Main Size 40
ăStep 9:ă05$) Main Pos "/% 4)&/ Set to Min */ 4)& Numeric Entry &
Knob Res 101:51 .&/5
ăStep 10:ă2&33 4)& #5440/
ăStep 11:ă05$) Measurements "/% 4)&/ Rise */ 4)& Measurements
101:51 .&/5
ăStep 12:ă05$) Rise */ 4)& ."+02 .&/5 "/% 4)&/ 3&4
Tracking 40 Off */ 4)& Rise 101:51 .&/5
ăStep 13:ă&4 4)& Main Size 40 /3%*6
ăStep 14:ă05$) Baseline */ 4)& Rise 101:51 .&/5
ăStep 15:ă05$) " #-"/, 1024*0/ 0' 4)& 3$2&&/ 40 &8*4 4)*3 .&/5
ăStep 16:ă&4 4)& Baseline #0440. ,/0# 40 4)& "6&2"(& 0' 4)& #0440.
0' 4)& 15-3& /3 #&'02& 4)& 34&1
ăStep 17:ă05$) 4)& )02*90/4"- *$0/ "/% 4)&/ 3&4 4)& Main Pos 30
4)"4 4)& 34&1 *3 "4 4)& -&'4:.034 &%(& 0' 4)& 3$2&&/
2Ć24
Checks and Adjustments
Checks and Adjustments
ăStep 18:ă( ( Main Size ($ %'*
ăStep 19:ă( ( Main Pos '$ (( ( '(% ' %%&$,"(!- #(&
$# ( '&#
ăStep 20:ă$) Rise # ( " $& "#)
ăStep 21:ă$& ( Mean *!) # ( Rise %$%/)% "#) $& !(&
)'
ăStep 22:ă!)!( ( '"%!# &' (" +( ( $!!$+#
$&")!
sampling. head
+ ǸMean : value ćCalibration. Step. Generator. rise rise. time
NOTE
Calibration Step Generation rise is read from the calibration step
generator.
ăStep 23:ăCheck (( ( / "%!# &' (" ' v %' $&
(( ( /
"%!# &' (" ' v %'
ăStep 24:ă%( (%' (&$) $& SDĆ22 & SDĆ26 Service Manual
2Ć25
Checks and Adjustments
PartĂ6
Acquisition
Aberrations
! # ! !" ! ! " ! " !
! Measurement Limits
"! ! " ! ! ! $
! ! TableĂ2Ć3:ăAberration Specifications
2Ć26
Time Difference from the
Rising Edge of Waveform
Minimum Specification
! v ! v
! v ! v
! v ! v
"
v ! v
! v ! v
Checks and Adjustments
Checks and Adjustments
Setup to Examine Acquisition Aberrations
11801B
Calibration Step
Generator
Calibration Step
Generator
Calibration Step
Generator
+1"0,,(2
-&$$"*,0/
*
/*!2
CSA 803A
Calibration Step
Generator
Calibration Step
Generator
Calibration Step
Generator
+1"0,,(2
-&$$"*,0/
*
/*!2
Procedure to Examine Acquisition Aberrations
ăStep 1:ă*&/&(&3" /%" &*./-0)"*/ ."//&*$. /%"* )'" /%" #+((+1&*$ ."/4
/&*$. &* /%" +-!"- (&./"!
),(&*$ "!
*## *
*./-0)"*/ &*#-)"
0//+* ,-"..
0//+* "-&". ,-"..
Enhanced Accuracy "-&". /+0 %
Calibrate All ,+,40, )"*0 Recall Defaults
0//+* ,-"..
Source Internal Clock
(&-/&+* /", "*"-/+ .1&/ % SDĆ22 & SDĆ26 Service Manual
2Ć27
Checks and Adjustments
ăStep 2:ă*++ ," -,,(' ' ,"' ,(-" Acquire Desc
ăStep 3:ă, Average N ,( On ' ,"' ,(-" Set Avg N
ăStep 4:ă, Average N ,( /#," ," ,() $'(
ăStep 5:ă*++ ," -,,('
ăStep 6:ă(-" ," "(*#1(',% '+#.
#(' ' ,"' +, ," Main Size ,(
ăStep 7:ă, ," Main Pos +( ,", ," *#+#'! ! ( ," +,) #+ , ,"
% ,2&(+, ! ( ," +*'
ăStep 8:ă(-" ," .*,#% #(' ' ,"' +, ," Vert Offset:M1 +(
,", ," .*! ( ," ,() ( ," )-%+ ,/' '+ ,* ," +,)
' ," *#!", ! ( ," +*' #+ , ," "(*#1(',% ',*%#'
ăStep 9:ă, ," Vert Size: M1 ,( &#.
ăStep 10:ă(-" Vert Offset: M1 ' ,"' Fine #' ," Numeric Entry &
Knob Res )()2-) &'-
ăStep 11:ă, Vert Offset: M1 +( ,", ," .*! ( ," ,() ( ," )-%+
,/' '+ ,* ," +,) ' ," *#!", ! ( ," +*' #+ , ,"
"(*#1(',% ',*%#'
ăStep 12:ă ,", ," &!'#,- ( ," &0#&-& )(+#,#. '
'!,#. **,#('+ ,", (-* '+ ,* ," +,) #+ v .*,#%
#.#+#('+ *(& ," "(*#1(',% ',*%#' ( ," +,) &)%#,-
ăStep 13:ă(-" ," "(*#1(',% '+#.
#(' ' ,"' +, ," Main Size ,(
ăStep 14:ă, ," Main Pos +( ,", ," *#+#'! ! ( ," +,) #+ , ,"
% ,2&(+, ! ( ," +*'
ăStep 15:ă ,", ," &!'#,- ( ," &0#&-& )(+#,#. '
'!,#. **,#('+ ,", (-* ,/' '+ ' '+ ,* ," +,)
#+ v .*,#% #.#+#('+ *(& ," "(*#1(',% ',*%#' ( ," +,)
&)%#,-
ăStep 16:ă, ," Main Size ,( )+#. ' ,"' ," Main Pos +( ,",
," *#+#'! ! ( ," +,) #+ , ," % ,2&(+, ! ( ," +*'
ăStep 17:ă ,", ," &!'#,- ( ," &0#&-& )(+#,#. '
'!,#. **,#('+ ,", (-* ,/' )+ ' '+ ,* ," +,)
#+ v .*,#% #.#+#('+ *(& ," "(*#1(',% ',*%#' ( ," +,)
&)%#,-
ăStep 18:ă(-" ," "(*#1(',% '+#.
#(' ' ,"' +, ," Main Size ,(
ăStep 19:ă(-" ," .*,#% #(' ' ,"' +, ," Vert Size:M1 ,(
&#.
2Ć28
Checks and Adjustments
Checks and Adjustments
ăStep 20:ă" " Vert Offset:M1 ! "" " $ " " "
#! "% ! " " !" " " " ! !
" " '" " ăStep 21:ă# " '" !
" !" " Main Size "
ăStep 22:ă" " Main Pos ! "" " ! " !" ! " "
"(!" " ! ăStep 23:ă "" " "# " &# !"$ (
" "" # ! " !" ! " " !" ! v $ " $!!
" '" " " !" "#
ăStep 24:ă "" " "# " &# "$ (
" "" # ! " !" ! " " !" ! v $ " $(
!! " '" " " !" "#
ăStep 25:ă# " Main Pos !" " Set to Min "
Numeric Entry and Knob Res (# #
ăStep 26:ă" " Main Size " !$
ăStep 27:ă# " $ " " !" Vert Offset:M1 ! ""
" $ " "" " #! ! " !" ! " "
'" " ăStep 28:ă# " '" !$
" !" " Main Size "
ăStep 29:ă" " Main Pos ! "" " ! " !" ! " "
"(!" " ! ăStep 30:ă "" " "# " &# !"$ "$ "! "" # "% ! ! "
" " !" ! v $ " $!! " '"
" " !" "#
ăStep 31:ă" " Main Size " !$ " " Main Pos ! ""
" ! " !" ! " " "(!" " ! ăStep 32:ă "" " "# " &# !"$ "$ "! "" # "% ! ! "
" " !" ! v $ " $!! " '"
" " !" "#
ăStep 33:ă" "! " # SDĆ22 & SDĆ26 Service Manual
2Ć29
Checks and Adjustments
PartĂ7
Coincidence Between
Channels
Specifications
Setup to Check Coincidence Between Channels
11801B
Calibration Step
Generator
Calibration Step
Generator
Calibration Step
Generator
CSA 803A
Calibration Step
Generator
Calibration Step
Generator
Calibration Step
Generator
2Ć30
Checks and Adjustments
Checks and Adjustments
Procedure to Check Coincidence Between Channels
ăStep 1:ă0+5+#.+;' 5*' +04536/'05 4'55+0)4 5*'0 /#-' 5*' (1..18+0) 4'5<
5+0)4 +0 5*' 13&'3 .+45'&
#/2.+0) '#&
0(( 0
04536/'05 #+0(3#/'
" $65510 23'44
" $65510 '3+'4 23'44
Enhanced Accuracy '3+'4 516%*
Calibrate All 212<62 /'06 Recall Defaults
$65510 23'44
Source Internal Clock
#.+$3#5+10 5'2 '0'3#513
" 48+5%* ăStep 2:ă3'44 5*' $65510
ăStep 3:ă3'44 5*' ! $65510 #0& 5*'0 516%* Horizontal Desc
ăStep 4:ă16%* Main Record Length #0& 5*'0 4'5 Main Record Len 51
8+5* 5*' 512 -01$
ăStep 5:ă16%* Acquire Desc +0 5*' ! /#,13 /'06
ăStep 6:ă'5 Average N 51 On #0& 5*'0 516%* Set Avg N
ăStep 7:ă'5 Average N 51 8+5* 5*' 512 -01$
ăStep 8:ă+4%100'%5 5*' %#.+$3#5+10 45'2 )'0'3#513 3'/15' *'#& (31/
%100'%5 +5 51 #0& 5*'0 23'44 5*' 0(( $65510
ăStep 9:ă3'44 ăStep 10:ă'.'%5 5*' *13+;105#. 24&+7
+%10 #0& 5*'0 4'5 5*' Main Size 51
ăStep 11:ă16%* Acquire Desc #0& 5*'0 4'5 Average N 51 On +0 5*'
Acquire Description 212<62 /'06
ăStep 12:ă16%* Exit
ăStep 13:ă'5 5*' Main Pos 41 5*#5 5*' 45'2 +4 #22319+/#5'.: %'05'3'&
10 5*' 4%3''0
ăStep 14:ă3'44 5*' $65510
ăStep 15:ă16%* Trace 2 +0 5*' Store Trace 212<62 /'06
ăStep 16:ă16%* Recall Trace +0 5*' /#,13 /'06
ăStep 17:ă16%* STO 1 +0 5*' Recall Stored Trace 212<62 /'06
SDĆ22 & SDĆ26 Service Manual
2Ć31
Checks and Adjustments
ăStep 18:ă%"!!& & $&"! %&# !$&"$ $ "& $"
"!!& & &" ! &! #$%% & ! '&&"!
ăStep 19:ă$%% & '&&"!
ăStep 20:ă"' Measurements ! &! Prop Delay ! & MeasureĆ
ments #"#('# !'
ăStep 21:ă"' Prop Delay ! & Trace 3 ! & Prop Delay #"#('# !'
ăStep 22:ă && &
2Ć32
"$
!' ! &!
!&' " & Prop Delay % v #%
Checks and Adjustments
Checks and Adjustments
PartĂ8
Maximum Signal
Voltage
Measurement Limit
Setup to Examine Maximum Signal Voltage
CH 1
11801B
Calibration
Generator
Trigger
Output
Trigger Input
50 W Coaxial Cable
Fast Rise
Positive Output
CH 1
CSA 803A
Calibration
Generator
Trigger
Output
Trigger Input
SDĆ22 & SDĆ26 Service Manual
50 W Coaxial Cable
Fast Rise
Positive Output
2Ć33
Checks and Adjustments
Procedure to Examine Maximum Signal Voltage
ăStep 1:ă0+6+#.+<' 6*' +05647/'06 5'66+0)5 6*'0 /#-' 6*' (1..19+0) 5'6=
6+0)5 +0 6*' 14&'4 .+56'&
#/2.+0) '#&
0(( 0
05647/'06 #+0(4#/'
" $76610 24'55
" $76610 '4+'5 24'55
Enhanced Accuracy '4+'5 617%*
Calibrate All 212=72 /'07 Recall Defaults
$76610 24'55
Slope Main Size 5&+8
#.+$4#6+10 '0'4#614
/2.+67&' /#:+/7/ #/2.+67&'
'4+1& 5
#4+#$.' #&,756/'06 /+& 4#0)'
ăStep 2:ă17%* 6*' 8'46+%#. +%10 #0& 6*'0 5'6 6*' Vert Offset: M1 51
6*#6 6*' 9#8'(14/ +5 8'46+%#..; %'06'4'& 10 6*' 5%4''0
ăStep 3:ă'6 6*' %#.+$4#6+10 )'0'4#6145 #/2.+67&' 51 6*#6 +6 &+52.#;5 #
2'#-=61=2'#- 537#4' 9#8'
ăStep 4:ă17%* 6*' *14+<106#. 05&+8
+%10 #0& 6*'0 5'6 6*' Main Size 61
ăStep 5:ă'6 6*' Main Pos 51 6*#6 6*' 215+6+8'=)1+0) 56'2 +5 9+6*+0
=&+8+5+10 61 6*' 4+)*6 1( 6*' .'(6=/156 '&)' 1( 6*' 5%4''0
ăStep 6:ă4'55 6*' ! $76610
ăStep 7:ă17%* Acquire Desc #0& 6*'0 5'6 Average N 61 On +0 6*'
Acquire Description 212=72 /'07
ăStep 8:ă17%* Set Avg N #0& 6*'0 5'6 Average N 61 9+6* 6*' 612
-01$
ăStep 9:ă17%* 6*' 8'46+%#. +%10 #0& 6*'0 5'6 6*' Vert Offset: M1 51
6*#6 6*' #8'4#)' 1( 6*' 612 1( 6*' 27.5' 05 #(6'4 6*' 56'2 +5 10 6*'
*14+<106#. %'06'4.+0'
ăStep 10:ă'6 Vert Size:M1 61 / &+8
ăStep 11:ă17%* Vert Offset: M1 #0& 6*'0 Fine +0 6*' Numeric Entry &
Knob Res 212=72 /'07
ăStep 12:ă'6 Vert Offset: M1 51 6*#6 6*' #8'4#)' 1( 6*' 612 1( 6*' 27.5'
05 #(6'4 6*' 56'2 +5 10 6*' *14+<106#. %'06'4.+0'
ăStep 13:ă'6 6*' Main Size 61 05&+8
2Ć34
Checks and Adjustments
Checks and Adjustments
ăStep 14:ă ! $! " " ! # v " " % '
!
ăStep 15:ă! % "
Main Size ăStep 16:ă Main Pos # '" ' ăStep 17:ă ! $! " " # v " " % !
ăStep 18:ă & SDĆ22 & SDĆ26 Service Manual
2Ć35
Checks and Adjustments
PartĂ9
Isolation Between
Channels
Specifications
Setup to Check Isolation Between Channels
11801B
Calibration Step
Generator
Calibration Step
Generator
Calibration Step
Generator
W CSA 803A
Calibration Step
Generator
Calibration Step
Generator
Calibration Step
Generator
W 2Ć36
Checks and Adjustments
Checks and Adjustments
Procedure to Check Isolation Between Channels
ăStep 1:ă/*4*"-*8& 4)& */3425.&/4 3&44*/(3 4)&/ .",& 4)& '0--07*/( 3&49
4*/(3 */ 4)& 02%&2 -*34&%
".1-*/( &"%
/'' /
/3425.&/4 "*/'2".&
! #5440/ 12&33
! #5440/ &2*&3 12&33
Enhanced Accuracy &2*&3 405$)
Calibrate All 101951 .&/5 Recall Defaults
#5440/ 12&33
Source Internal Clock
"-*#2"4*0/ 4&1 &/&2"402
! 7*4$) ăStep 2:ă2&33 4)& #5440/
ăStep 3:ă05$) 4)& )02*80/4"- 13%*6
ăStep 4:ă2&33 4)&
*$0/ "/% 4)&/ 3&4 4)& Main Size 40
#5440/ "/% 4)&/ 405$) Horizontal Desc
ăStep 5:ă05$) Main Record Length "/% 4)&/ 3&4 Main Record Len 40
7*4) 4)& 401 ,/0#
ăStep 6:ă05$) Acquire Desc */ 4)&
."+02 .&/5
ăStep 7:ă&4 Average N 40 On "/% 4)&/ 405$) Set Avg N */ 4)& Acquire
Description 101951 .&/5
ăStep 8:ă&4 Average N 40 7*4) 4)& 401 ,/0#
ăStep 9:ă2&33 4)& #5440/ 0/ 4)& 3".1-*/(
)&"%
ăStep 10:ă05$) 4)& 6&24*$"- *$0/ "/% 4)&/ 3&4 4)& Vert Size: M2 40
.%*6
ăStep 11:ă05$) Acquire Desc */ 4)&
3&4 Avg N 40 On
."+02 .&/5 "/% 4)&/
ăStep 12:ă "*4 5/4*- 4)& Acquire Desc 3&-&$402 */ 4)& ."+02
.&/5 3)073 4)"4 "6&2"(&3 )"6& #&&/ $0.1-&4&%
ăStep 13:ă05$) 4)& #5440/
ăStep 14:ă05$) Measurements "/% 4)&/ PeakĆPeak */ 4)&
Measurements 101951 .&/5
ăStep 15:ă&$02% 4)& PeakĆPeak .&"352&.&/4 '02 -"4&2 53&
ăStep 16:ă2&33 4)& #5440/
SDĆ22 & SDĆ26 Service Manual
2Ć37
Checks and Adjustments
ăStep 17:ă*/$ Measurements ) .$!) PeakĆPeak %) .$!
Measurements +*+3/+ (!)/
ăStep 18:ă!*, .$! PeakĆPeak (!-/,!(!). "*, '.!, /-!
ăStep 19:ă .$. PeakĆPeak PeakĆPeak v
ăStep 20:ă%-*))!. .$! '%,.%*) -.!+ #!)!,.*, ,!(*.! $! ",*(
) .$! W .!,(%).%*) ",*( *))!. .$! '%,.%*) -.!+
#!)!,.*, .* *))!. .$! W .!,(%).%*) .* ) .$!)
+,!-- .$! )"" /..*)
ăStep 21:ă,!-- .$! /..*)
ăStep 22:ă*/$ .$! $*,%2*).' +- %0
%*) ) .$!) -!. .$! Main Size .*
ăStep 23:ă,!-- .$! /..*)
ăStep 24:ă,!-- .$! /..*)
ăStep 25:ă,!-- .$! /..*)
ăStep 26:ă%. /).%' .$! Acquire Desc -!'!.*, %) .$! (&*,
(!)/ -$*1- .$. 0!,#!- $0! !!) *(+'!.! ăStep 27:ă,!-- .$! /..*)
ăStep 28:ă!*, .$! PeakĆPeak (!-/,!(!). "*, '.!, /-!
ăStep 29:ă,!-- .$! /..*)
ăStep 30:ă!*, .$! PeakĆPeak (!-/,!(!). "*, '.!, /-!
ăStep 31:ă .$. PeakĆPeak PeakĆPeak v
2Ć38
Checks and Adjustments
Maintenance
" "# #" !# ! !! !%#% # !$!" ! ' $#( " " !% !
" #! !$#!( # " #*
# $!
Preventive
Maintenance
!%#% # !! !$!( !%# !& ( !% !#( # "#!$# ! " "%!#( # %!# # & # " " "$# #!" #
! $( #
Periodic Electrical Checks
"$! $!# "$!#" !! ! #! " #
"#!$# " #! $!" !# ! %!(
#" $" ! $#( !$!" # !! ! #!
" ! % # StaticĆSensitive Device Classification
CAUTION
"#!$# " # #! #" ## !
"$"# # ! "## "! * %" !#% "$"*
##( %!$" """ "$#!" ## %#" #
! $!## %!#"
"!% # & !$#" # % ăStep 1:ă
) "##*""#% #"
ăStep 2:ă!"!# # " " #! ! #!" "#! # " " # "$! ! $#% !"*
!# # " " &# "!#*!$# #!#" # $#"
( ## #" "##*""#% """ !
#"
SDĆ22 & SDĆ26 Service Manual
3Ć1
Maintenance
ăStep 3:ă%.$-#! /$! .//% 1*'/#! "-*( 3*0- * 3 3 2!-%)# 2-%./
./-+ 2$%'! $) '%)# /$!.! *(+*)!)/. !-1%! *" .//%4.!).%/%1!
..!('%!. *- *(+*)!)/. .$*0' ! +!-"*-(! *)'3 / .//%4"-!!
2*-& .//%*) 3 ,0'%"%! .!-1%! +!-.*))!' .! .//% *)/-*' (/ )
2-%./ ./-+
ăStep 4:ă'!- /$! 2*-& .//%*) .0-"! *" )3/$%)# /$/ ) #!)!-/! *$*' .//% $-#!
ăStep 5:ă!!+ /$! *(+*)!)/ '! . .$*-/! /*#!/$!- 2$!)!1!+*..%'!
ăStep 6:ă%& 0+ *(+*)!)/. 3 /$! * 3 )!1!- 3 /$! '! .
ăStep 7:ă* )*/ .'% ! /$! *(+*)!)/. *1!- )3 .0-"!
ăStep 8:ă1*% $) '%)# *(+*)!)/. %) -!. /$/ $1! "'**- *- 2*-&4
.0-"! *1!-%)# +'! *" #!)!-/%)# .//% $-#!
TableĂ3Ć1:ăRelative Susceptibility to Electrostatic Discharge (ESD)
Semiconductor Classes
Relative
Susceptibility
Levels1
*- (%-*%-0%/. *- %.-!/! %-0%/. *'%)!- (%-*%-0%/. 2%/$ %)+0/. (*./ .!).%/%1!
$*//&3 .%#)' %* !.
$*//&3 %#$4"-!,0!)3 %+*'- /-).%./*-.
%)!- (%-*%-0%/.
*24+*2!- $*//&3 '!./ .!).%/%1!
1Voltage
equivalent for levels (voltage discharged from a 100ĂpF capacitor through resisĆ
tance of 100 W:
1Ă=Ă100 to 500 V
6 = 600 to 800 V
2 = 200 to 500 V
7 = 400 to 1000 V (est.)
3 = 250 V
8 = 900 V
4 = 500 V
9 = 1200 V
5 = 400 to 600 Vąą
3Ć2
Maintenance
Maintenance
Exchanging Sampling Heads
$ # " # " $ #
! # # !
# $ # SDĆ22 & SDĆ26 Service Manual
3Ć3
Maintenance
Removing and Replacing the Sampling Head Internal
Circuitry
CAUTION
To avoid damage to the sampling head, set the instrument ON/
STANDBY switch to STANDBY and remove the sampling head from
the instrument before removing or replacing the internal circuitry.
$"$ & "")! #$"'$% &" $ "( ! $# & !&$! $'&$+
! & % #! '$ -
ăStep 1:ă "( & ! '&&"! + !&+ #'!
"! & #%& !" )& % !-!"% #$%
ăStep 2:ă "( & &$ % ",$( %$)% "! % " &
% #! %! % '$ -
ăStep 3:ă "( & %"$&-$'& &$ !&"!% & $"!& #! ! &
%! $" & !&$! $'&$+
ăStep 4:ă!%& & !&$! $'&$+ !&" & $+ %##! %!
ăStep 5:ă# & %"$&-$'& &$ !&"!% "! & % #! !#'&%
ăStep 6:ă&'$! & !&$! $'&$+ & $'& "$ ! &&
$$$ "$ % #! *! "$ $#$
ăStep 7:ă" $# & !&$! $'&$+ "") & $ "( #$"'$%
! $($% "$$
3Ć4
Maintenance
Maintenance
Short Circuit
Terminations
Short Circuit
Terminations
Figure 3Ć1:ăSampling Head Screw Locations
SDĆ22 & SDĆ26 Service Manual
3Ć5
Maintenance
Changing the Sampling Head Identification Number
The following procedure allows you to change the sampling head identificaĆ
tion number to fit the requirements of your application.
The following equipment, in addition to an 11800 Series or CSA 803 Series
instrument and the sampling head, is necessary to perform this procedure:
H
IBM PC or any other compatible PC that has MS DOS and an RSĆ232ĆC
serial port configured for COM1
H
a serial cable
Procedure to change the sampling head identification number:
ăStep 1:ăSet the instrument's PRINCIPAL POWER SWITCH to OFF. Install
one of the shortĆcircuit jumpers across the two J860 pins on the A5 Time
Base/Controller Board. These shortĆcircuit jumpers are located on
several jumper pins on the A5 Time Base/Controller Board. This board is
located on the bottom of the instrument and can be accessed once the
bottom panel is removed. Refer to the section in the
for your instrument for more information on accessing
this board. See Figure 3Ć2 for the location of jumper J860.
ăStep 2:ăBoot up the PC with MS DOS operating.
ăStep 3:ăConnect the serial cable to the instrument's RSĆ232ĆC port
located at the rear of the instrument. Connect the other end of the cable
to the COM1 port on the PC.
ăStep 4:ăInstall the sampling head in any sampling head compartment in
the instrument.
ăStep 5:ăSet the PRINCIPAL POWER SWITCH to ON and the ON/
STANDBY switch to ON.
ăStep 6:ăAfter the diagnostics are complete, press the UTILITY button
and then touch RSĆ232 Parameters.
ăStep 7:ăSet the Baud Rate to 4800 Bd, the Parity to none, and the
Stop Bits to 1 in the RSĆ232 Parameters popĆup menu.
ăStep 8:ăInsert the Sampling Head Utility Software floppy disk (provided
in this manual) into the A" drive of the system controller.
ăStep 9:ăOn the PC, type a: and then press the return or enter key.
3Ć6
Maintenance
Maintenance
J860
Figure 3Ć2:ăA5 Time Base/Controller Board Jumper Location
ăStep 10:ă/) id ' ,"' )*++ ," *,-*' (* ',* $/
" ,"' #+)%/+ ," (%%(.#'! &++!
Make sure 11800 RS232 port is set up as follows:
Baud Rate
Parity
Stop bits
4800
none
1
Enter mainframe head number [1..4]
NOTE
When entering the sampling head number, the 11802 Oscilloscope
and CSA 803 Series Communications Signal Analyzers only have
head number 1 and head number 2. The 11801 Series OscilloĆ
scopes have head number 1 through head number 4. The head
numbers correspond to the sampling head compartments and are
in ascending order (reading from left to right).
SDĆ22 & SDĆ26 Service Manual
3Ć7
Maintenance
ăStep 11:ă' &+) + *%($!& &,%) +/( !& + '))+ *%0
($!& &,%) & + & ()** + )+,)& ') &+) #/
+ & !*($/* + '$$'.!& %**
Current ID number is: XXXXXXXX"
Enter new ID number (8 characters max):
NOTE
The X's between the quotes represent the current ID number. Eight
is the maximum number of digits allowed and one is the minimum.
Any character is allowed, except a space ( ) character.
ăStep 12:ă&+) +.& '& & ! + )+)* ') + &. !&+!!0
+!'& &,%)
!&*+),%&+ .!$$ + & $* + %**
Change in channel M configuration
',) +!%* + + +'( ' + *)&
ăStep 13:ă+ + *.!+ +' & + & *.!+ !+
# +' ăStep 14:ă' -)!/ + &. !&+!!+!'& &,%) ()** + ,++'& & + & +', Identify
&. !&+!!+!'& &,%) &'. (()* ,&) Mainframe Sampling
Heads !& + System Identification ('(0,( %&,
ăStep 15:ă%'- + * ')+0!),!+ ",%() + + .* !&*+$$ '& !&
+( 3Ć8
Maintenance
Theory of Operation
/ #&"$ ) *-%/$$" "%-/$%) &) () *#
)#&"$ / #&"$ ) *-%/$$" &) ()
*# )#&"$ System Functional
Overview
) )*%$ )() $ ""+)*(*) * # %( +$*%$" "%!) % *
/ / #&"$ ) ) +( /
'+)*%$
.)*#
*(%
$(*%(
*(% (,
*(% (,
%(%#
$)*(+#$*
'+)*%$
.)*#
Figure 4Ć1:ăSDĆ22 and SDĆ26 Sampling Head Block Diagram
)*(% (, )$" (%# * $)*(+#$* #$(# %$*(%") * *#$ %
* )*(% ))(*%$ *% '+)*%$ ).)*# $ +($*) )#&"$
%$$ *-$ * *-% $$")
)*(% )$) )$" ) &(* % * )*(% )$" (*+($ *% * $)*(+/
#$* $)*(+#$* #%$*%() * *# +(*%$ % * )*(% (,)*(%
)$) "%%& $ +)*) ". "$ $) * $)*(+#$* *% #$*$ %((*
)*(% *#$
SDĆ22 & SDĆ26 Service Manual
4Ć1
Theory of Operation
Loop Gain
$ ! $ # ! " ! # # !$ # # ! ! # ! ! $ "! ! ! " ! $ " ! %
! # "! !
! " # # "! # " ! "! !
! " # # " "
! % # $ ! Unity Loop Gain
Insufficient Loop Gain
Excessive Loop Gain
Figure 4Ć2:ăDisplayed Traces at Various Loop Gain Settings
4Ć2
Theory of Operation
Theory of Operation
Offset Null
!
SDĆ22 & SDĆ26 Service Manual
4Ć3
4Ć4
Replaceable Parts
!"* *+"'& '&+"&* $"*+ ' +! '%('&&+* +!+ ) )($$ ') +!
1 1 %($"& * * *)" $'. ,* +!"* $"*+ +' "&+"0
& ')) )($%&+ ()+*
Parts Ordering
Information
($%&+ ()+* ) -"$$ )'% ') +!)', ! 0',) $'$ #+)'&"/ &
*)-" &+) ') )()*&++"-
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Module Replacement
! 1 1 %($"& * ) *)-" 0 %',$ )($%&+
*' +!) ) +!) '(+"'&* 0', *!',$ '&*")
SDĆ22 & SDĆ26 Service Manual
H
Module Exchange 2 & *'% ** 0', %0 /!& 0',) %',$
') )%&,+,) %',$ !* %',$* '*+ *" &""&+$0 $** +!&
&. %',$* & %+ +! *% +')0 *(""+"'&* ') %') "&')1
%+"'& ',+ +! %',$ /!& ()' )% $$ /+ H
Module Repair 2 ', %0 *!"( 0',) %',$ +' ,* ') )(") +)
.!"! . ."$$ )+,)& "+ +' 0',
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New Modules 2 ', %0 (,)!* &. )($%&+ %',$* "& +!
*% .0 * '+!) )($%&+ ()+*
5Ć1
Replaceable Parts
Using the
Replaceable
Parts List
() & "#&!(#" " ( $ &(' '( ' &&" #& %)
&(&* "&'("" ( '(&)()& " ()&' # ( '( + $ ,#)
" ( ( "#&!(#" ,#) " #& #&&" &$ !"( $&('
Item Names
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&*(#"' #"#&! (# !&" (#" ("&' "'(()( '("& 5Ć2
Replaceable Parts
Replaceable Parts
CROSS INDEX - MFR. CODE NUMBER TO MANUFACTURER
Mfr.
Code
Manufacturer
Address
City, State, Zip Code
# # "
% # " # "
! ! # ! #! ! % " "!
$ !% #" "
! # " # ! " # ! $ " &"
$ SDĆ22 & SDĆ26 Service Manual
!! 5Ć3
Replaceable Parts
Fig. &
Index
No.
Qty
Name & Description
!! ) ! ) %
!## * $
#! % " $
# $
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Tektronix
Part No.
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Effective Dscont
Mfr.
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5Ć4
# "%$ ! %! Replaceable Parts
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Fig. &
Index
No.
Tektronix
Part No.
Serial No.
Effective Dscont
Qty
Name & Description
Mfr.
Code
Mfr. Part No.
" !#
" Figure 5Ć1:ăExploded View of the SDĆ22 & SDĆ26 Sampling Heads
SDĆ22 & SDĆ26 Service Manual
5Ć5
5Ć6