Tektronix SD-14 Manual de utilizare

Service Manual

SD-14

Sampling Head

070–8285–01

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 per-

forming service.

Please check for change information at the rear

of this manual.

First Printing: May 1993

  

"$) *.3425-&.4 -".5'"$452&% #9 &+42/.*8 )"3 " 3&2*", .5-#&2 /. " 0".&, *.3&24 /2 4"( /2 34"-0&% /. 4)&

$)"33*3 )& '*234 ,&44&2 *. 4)& 3&2*", .5-#&2 %&3*(."4&3 4)& $/5.429 /' -".5'"$452& )& ,"34 '*6& %*(*43 /' 4)&

3&2*", .5-#&2 "2& "33*(.&% 3&15&.4*",,9 ".% "2& 5.*15& 4/ &"$) *.3425-&.4 )/3& -".5'"$452&% *. 4)&

.*4&% 4"4&3 )"6& 3*8 5.*15& %*(*43 )& $/5.429 /' -".5'"$452& *3 *%&.4*'*&% "3 '/,,/73

 &+42/.*8 .$ &"6&24/. 2&(/. 

 &+42/.*8 .*4&% *.(%/- 4% /.%/.

 /.9&+42/.*8 "0".

 &+42/.*8 /,,".%   &&2&.6&&. )& &4)&2,".%3

.3425-&.43 -".5'"$452&% '/2 &+42/.*8 #9 &84&2.", 6&.%/23 /543*%& 4)& .*4&% 4"4&3 "2& "33*(.&% " 47/ %*(*4

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&+42/.*8 .$  /8  &"6&24/.  

2*.4&% *. 

/092*()4 E &+42/.*8 .$   ,, 2*()43 2&3&26&% &+42/.*8 02/%5$43 "2& $/6&2&% #9  ".%

'/2&*(. 0"4&.43 *335&% ".% 0&.%*.( )& '/,,/7*.( "2& 2&(*34&2&% 42"%&-"2+3 ! 

 ".% :

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.

SDĆ14 Service Manual

i

Table of Contents

List of Figures iii...............................................

List of Tables v................................................

General Information

General Information 1Ć1.........................................

Introduction 1Ć1.............................................

Safety Summary 1Ć2.........................................

Installing and Removing the Sampling Head 1Ć4...............

Packing for Shipment 1Ć7....................................

Operating Environment 1Ć8...................................

Checks and Adjustments

Checks and Adjustments 2Ć1.....................................

Test Equipment 2Ć3..........................................

Using These Procedures 2Ć5.................................

$"!  "! # '

"&  "  ""! '

# "!  !# " #! '

"# #!" "! '

ProcedureĂ1 Power On 2Ć8...................................

ProcedureĂ2 Rise Time 2Ć10...................................

ProcedureĂ3 Aberrations 2Ć13.................................

ProcedureĂ4 Offset/Sampling Repetition Rate 2Ć17..............

ProcedureĂ5 Linearity/Gain 2Ć22...............................

ProcedureĂ6 Displayed Noise 2Ć28.............................

ProcedureĂ7 Time Delta 2Ć30..................................

Maintenance

Maintenance 3Ć1................................................

Preventive Maintenance 3Ć1..................................

  "  ! '

""'!"$ $ !!" '

%  ! '

Table of Contents

Contents

ii

      

 

      

Theory of Operation

Theory of Operation 4Ć1.........................................

System Functional Overview 4Ć1..............................

Offset Null and Offset Gain 4Ć2...............................

Replaceable Parts

Replaceable Parts 5Ć1...........................................

Parts Ordering Information 5Ć1...............................

Using the Replaceable Parts List 5Ć2..........................

SDĆ14 Service Manual

iii

List of Figures

$".+ 43'*&$("   )'*+-' (-, $( (  ( 

 4

$".+ 43(,-&&$("  '*&$("   $( ( (,-+.' (- 4

$".+ 43)-$)(, )! )(-+)&, ( )(( -)+, )( $(!+'

(,-+.' (-, 4

$".+ 43 ')/$(" (  *&$(" -# '*&$("   (- +(&

$+.$-+2 4

$".+ 43 $' , )(-+)&& + )+ .'* + )-$)( 4

$".+ 434 &)% $"+' 4

$".+ 431*&)  $ 0 )! -# 4 '*&$("   4

  



iv

SDĆ14 Service Manual

v

List of Tables

&!465%(",'! 2!/.%0! ,)!--), ( %'! -!

)(.,)&&!, %,'1,! !,-%)(- )'*.%&! 1%.$ .$! 6 6

&!465!-/,!'!(. %'%.- ( *!%"%.%)(- 6

&!465!-. +/%*'!(. 6

&!465!,,.%)( !-/,!'!(. %'%.- 6

&!465!-/,!'!(. %'%.- "), ""-!. 6

&!465. "), &/&.%)( )" %( ( %(!,%.3 6

&!465!&.%0! /-!*.%%&%.3 .) &!.,)-..% %-$,#!  6

  



vi

 

SDĆ14 Service Manual

1Ć1

General Information

$ $%  '$  %  #%   % !!) ! (# % % +

! 

%)  #%  $ ( $  #%   $%  # ' %

$!  !  # $!%  '# %  % $ $&

$ !#% %!#%&# $ & #

      $ $  # &$ ) "&

$#' !#$  %  %$  #%  $$#) %   %

% + ! 

 + !  $  %( + !# +"&!! $! 

%%   $%  % #$ % ! $ $ !$ %

+ &%+ %  %   #$  &% $ 

)*#$

Introduction

General Information

1Ć2

  "       "    $

      !   !  

   ! " "  "    

"

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

     $     

      "     

   

Safety Summary

General Information

SDĆ14 Service Manual

1Ć3

Do Not Operate in Explosive Atmospheres

            

 

General Information

1Ć4

 / !$ "  ' ' "(# ( #" # ( &#"(/$" #!$&(/

!"(' # "  &' ( !$ " ' #'#$ #&   &'

#!!)"(#"' " " -.& )& / '#+' ( &#"( $" # (

 "   "'(&)!"(' " ( #(#"' # ( '!$ " 

#!$&(!"('

11801B

CSA 803A

Sampling Head

Compartments

Sampling Head

Compartments

Power Only Sampling

Head Compartments

Figure 1Ć1:ăSampling Head Compartments in an 11801B and a

CSA 803A

 !"&! "'(&)!"( !)'( * &!+& #!$(  +( ( /

 / '#+' ( !"&! ,)(* &#''#&  " ! '

#"(&# &  &!+& *&'#" &%)& " #&& (# #$&( ( /

Installing and

Removing the

Sampling Head

General Information

SDĆ14 Service Manual

1Ć5

TableĂ1Ć1:ăMainframe Executive Processor and Time Base/

Controller Firmware Versions Compatible with the SDĆ14

Mainframe Instrument Firmware Version for SDĆ14 Operation

   #% "*%

 #%    #% "*%

 #%    #% "*%

' &' #" &!$ "  !(&'  "&'  " "  %& #%  

%& "&'%(!"' '# &!$  &" &

CAUTION

To prevent damage to the sampling head or instrument, never

install or remove a sampling head when the instrument's

PRINCIPAL POWER SWITCH is ON (poweredĆon).

' '  &*' &' '#  $  ' &!$ "  " 

#!$%'!"' " & #* + $(& ' " *' %! $%&&(% " ' &!$ "

 & &' '(%" ' #,#*" &%* '# ''" ' &!$ "  "'#

$ 

# %!#) ' &!$ "  %#! " "&'%(!"' &' "&'%(!"'&

 &*' '#  (%" ' #,#*" &%* " '"

& #* + $( #(' ' &!$ " 

General Information

1Ć6

Sampling

Head

Lock Down

Screw



Figure 1Ć2:ăInstalling a Sampling Head in an Instrument

General Information

SDĆ14 Service Manual

1Ć7

 $#''  '* " &)' ( #&" &(#" " $" (# $

( '!$ "  +" '$$" ( - #!!& (&"'$#&((#" ((

$&#((* #*&' (# ( $&# "$)('

((  ( (# ( '!$ "   ( ' '$$ (# -#)& # (&#",

'&* "(& #& '&* #& &$& " ) ( # #+" "#&!(#" #" (

(

H ! " &'' # ( "'(&)!"( " '!$ "  #+"&

H ! #  $&'#" ( -#)& &! +# "  #"(( #)( ( "'(&).

!"( " '!$ " 

H #!$ ( "'(&)!"( " '!$ "  (-$ " '& ")!&

H  '&$(#" # ( '&* &%)&

 ( '!$ "  ' # #+'  ( #&" $ ' "#( * .

  #& ' "#( ( #& )'

ăStep 1:ă(( $&#((* #*&' (# ( $&# "$)('

ăStep 2:ă("  #&&)( &#& &(#" +( "' !"'#"' (

'( ', "'  ! &(& (" ( '!$ "  !"'#"'

'  &(#" +(  )&'(" ('( '(&"( # ( '(  $#)"' $&

'%)& "

ăStep 3:ă# " +&$ ( $&#' '$&( - &#! (  +( "(.

'(( '(" #& (' %)* "(

ăStep 4:ă) - +&$ ( '!$ "  +( "('(( '(" #& ('

%)* "( (# $&#(( ( "'

ăStep 5:ă( - $ ( $&# $  #"' ( 

ăStep 6:ă( - $ )"" #& )&(" #! (+" ( &(#" "

( '!$ "  (# )'#" ( '!$ "  #"  ''  #+

(& "' # $" #"  '

ăStep 7:ă ( &(#" +( '$$" ($ #& +( ")'(& '($ '

ăStep 8:ă& ( &'' # ( (&#", '&* "(& " -#)& &()&"

&'' #" ( &(#" " #" #& !#& $&#!""( $ '

Packing for Shipment

General Information

1Ć8

 % $ " # "!    $ " !#   

 "   !  

Operating Temperature

 " " !  %  " " " "#  ! "% _ 

 _  "  " !   " " "# !   _ 

" _  " !"  " " "# ! #"! "  " "! %

" !!! "  "  " " "#     &

% 

 # &  " !" #" ! $ "  '#" % '#

  " " & "  # & " !" #" $ "! " '

 # &  " "  !" #" " "#  !  

" "_    " !  ! $   " !" #"

Operating

Environment

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