Tektronix CSA 803C manual

Service Manual CSA 803C Communications Signal Analyzer 070-9974-01 W arning The servicing instructions are for use by qualified personnel only . T o avoid personal injury , do not perform any servicing unless you are qualified to do so. Refer to all safety summaries prior to performing service.[...]

Copyright © T ektronix, Inc. All rights reserved. T ektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes that in all previously published material. Specifications and price change privileges reserved. Printed in the U.S.A. T ektronix, Inc., P .O. Box 1000, W ilsonville, OR 97070?[...]

  !                   " [...]

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EC Declaration of Conformity We T ektronix Holland N.V . Marktweg 73A 8444 AB Heerenveen The Netherlands declare under sole responsibility that the CSA 803C Communications Signal Analyzer meets the intent of Directive 89/336/EEC for Electromagnetic Compatibility and Low V oltage Directive 73/23/ECC for Product Safety . Compliance was demonstrated t[...]

Declaration of Conformity with Electromagnetic Compatibility Standards as Required under the Radiocommunications Act We T ektronix, Inc. of T ektronix Australia Pty Limited 80 W aterloo Road North R yde NSW 21 13 Supplier Code: N60 declare under sole responsibility that the CSA 803C Communications Signal Analyzer to which this declaration relates i[...]

    i    Product Support For applicationĆoriented questions about a T ektronix measurement product, call toll free in North America: 1Ć800Ć TEK Ć WIDE (1Ć800Ć835Ć9433 ext. 2400) 6:00 a.m. - 5:00 p.m. P acific time Or , contact[...]

       ii[...]

CSA 803C Service Manual iii T able of Contents Contacting T ektronix i ......................................... General Safety Summary xvii ..................................... Service Safety Summary xix ..................................... Specifications Operating Information Sampling Head Installation and Removal 2Ć2 .................. Power [...]

T able of Contents Contents iv Block Diagram Descriptions 3Ć7 ................................. A1 M/F Strobe Drive Board 3Ć7 ............................... $7$ 8))(56 =  ''5(66 $7&+ =?[...]

T able of Contents CSA 803C Service Manual v A15 Memory Management Unit (MMU) Board 3Ć20 ..............   ;  " $7()13/  ; [...]

 # & &%+%+* &%+%+* vi )&)$%  )!!+!&%  *+ (,!'$%+ 1   *+ &) 1 ?[...]

T able of Contents CSA 803C Service Manual vii T riggering, External Direct 4Ć39 ................................ Specifications 4Ć41 ......................................... Setup to Check Prescaler T riggering 4Ć41 ..................... Procedure to Check Prescaler T riggering 4Ć41 ................. Prescaler T riggering 4Ć41 ..............[...]

T able of Contents Contents viii Maintenance Preventive Maintenance 6Ć1 ...................................... Removing the Cabinet P anel 6Ć1 .............................. Cleaning the Instrument 6Ć2 .................................. Exterior 6Ć2 .............................................. CRT 6Ć2 ........................................[...]

T able of Contents CSA 803C Service Manual ix FRU IC Removal 6Ć66 ......................................... #/') 1 +1#/$!# +1#%/1#" '/!2'10  7 ) *8   !(   0  8  '/*4/# +1#%/1#" '/!2'10 72) +8'+#  [...]

   !! !! x !  !"! ! $  #  ! $ [...]

    xi    +)74' >=#/2.+0) '#& 1/2#46/'065 +0 6*'   1//70+%#6+105 +)0#. 0#.;<'4 >  +)74' >?[...]

    xii Figure 6Ć21:ăRemoving/Replacing the A17 Executive Processor Board 6Ć54 ................................................... Figure 6Ć22:ăRemoving/Replacing the A18 Memory Board 6Ć56 ......... Figure 6Ć23:ăRemoving/Replacing the A19 Strobe/TDR Buffer Board 6Ć58 ..........[...]

       xiii Figure 10Ć1:ăCabinet 10Ć7 ......................................... Figure 10Ć2:ăFront P anel 10Ć9 ...................................... Figure 10Ć3:ăChassis, Rear 10Ć11 .................................... Figure 10Ć4:ăCircuit[...]

    xiv[...]

    xv      !",%:<;%!352%-%.4 )-)43 0%#)&)#!4)/.3 $*534-%.43 !.$ 5.#4)/.!,  %343 < [...]

     xvi[...]

    xvii    Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. T o avoid potential hazards, use this product only as specified. Only qualified personnel shou[...]

   xviii T erms in this Manual. These terms may appear in this manual: W ARNING. W arning statements identify conditions or practices that could r esult in injury or loss of life. CAUTION. Caution statements identify conditions or practices that could r esult in damage to this pr odu[...]

    xix    Only qualified personnel should perform service procedures. Read this Service Safety Summary and the General Safety Summary before performing any service procedures. Do Not Service Alone. Do not perform internal service[...]

   xx[...]

CSA 803C Service Manual 1Ć1 Specifications %&. ." /&+* ,-+1&!". .," &#& /&+*. #+- /"./&*$ *! !'0./&*$ 4+0-   "#"- /+ /%"     #+-  $"*"-( !". -&,/&+* +# /%&quo[...]

Specifications Specifications 1Ć2 T ableĂ1Ć1:ăMeasurement Limits, Specifications, Adjustments, and F unctional T ests (Cont.) P art and Description F unctional T ests Adjustments (Adjust) Specifications (Check) Measurement Limits (Examine) Display (Cont.) V ertical Size and Position align with tic marks none VERT SIZE, L321; and VERT POS, R311;[...]

 #"   !% $ 1Ć3  &('"$!# #"  #" $"##"   $#  "#" #[...]

  1Ć4[...]

    2Ć1           $ $  # &$ ) "&am[...]

 "  "  "  " 2Ć2  ! '!  %! %   $% %   $(% %!  +   !#  $%  !# #!&[...]

      2Ć3      !             ?[...]

    2Ć4 ! (( '%#     ##&,) -&+ *& )#* "*!(   &(    . *& ?[...]

Operating Information CSA 803C Service Manual 2Ć5  %$,' $' ,) %%'$%') %!* $#*')$# ( (*%%! ,)  #()'*"#)  ! . $,' .$' $#*)$' #))$# +?[...]

Operating Information Operating Information 2Ć6 There are four batteries within the instrument that allow the retention of volatile memory upon loss of the AC power source. These selfĆcontained power sources provide memory backup power to retain the following: H frontĆpanel settings H stored settings H stored waveforms H Time & Date paramete[...]

Operating Information CSA 803C Service Manual 2Ć7  ( "'(&)!"( ' (#  '$$ #& #" '("' - #!!& (&"'. $#&((#" ( '#)   $ " ( #&[...]

    2Ć8[...]

    3Ć1 !   #  &.,*)$2    $-  #$"#5, -*'/.$*) *((/)$.$*)- $")' )'345 , *((*.$)" /+ .* !*/, $)+/. #)) '- .#,*/"# .# /&ap[...]

      3Ć2[...]

CSA 803C Service Manual 3Ć3 System F unctional Overview  !+ +,!'& +*!+ ,  %"'* -&,!'&$ $'#+ ' ,   + !-* 2     '&,!&+ & )-!+!,!'& +1+,?[...]

System Functional Overview Theory of Operation 3Ć4 After the user requests an operation (with a front panel control for instance), the Executive Processor (EXP) directs the CSA 803C to perform this operaĆ tion. Another primary function of the EXP is to execute diagnostic SelfĆ T ests on the instrument when poweringĆon or at the user's requ[...]

System Functional Overview CSA 803C Service Manual 3Ć5 User control of the CSA 803C is primarily through the following three front panel controls:  the frontĆpanel major Ćmenu buttons  the touch panel  the multifunction knobs The major menu buttons are the top level menu selections for the instruĆ ment. T ouching an icon, menu item, or[...]

      3Ć6 !-*    34*6&8*7 +631 *.8-*6 &  " 36  " 231.2&0 0.2* :308&,* 7396(* &8 & 0.2* +6*59*2(< '*8;**2  = &2)  = !-* ?[...]

CSA 803C Service Manual 3Ć7 Block Diagram Descriptions This section describes the CSA 803C detailed block (cabling) diagram and the boardĆlevel block diagrams (see the  section). The A1 M/F Strobe Drive board consists of the following circuits:  Data buffers circuitry  Address latch circuitry  Function decoder cir[...]

    #    3Ć8   ! This circuit buffers the control signals sent to the A1 M/F Strobe Drive board from the A5 Time Base/Controller board. The A3 M/F Power Connector board consists of builtĆin connectors [...]

Block Diagram Descriptions CSA 803C Service Manual 3Ć9 The A5 Time Base Controller board consists of the following circuitry:  Microprocessor (MPU)  RAM/ROM  T rigger circuitry  Time Base circuitry  Acquisition system interface  Memory management unit (MMU) interface See Figure 9Ć4 for the block diagram of this board. Microproce[...]

Block Diagram Descriptions Theory of Operation 3Ć10  .-( -+#!!+ &( #, ,%- -" -#&, 0#%% !'+- #-, (0' -+#!!+ ,#!'%  -+  &,  '(+&% -+#!!+ &( #, ,%- -"   0#%% 0#-[...]

       3Ć11 change. T riggering is held off to beyond the rightmost point in the Main record. The minimum value is 5 m s. The Actual Holdoff (auto mode) calculaĆ tion is: Actual Holdoff (auto mode) = max (5 m s, 5 m [...]

Block Diagram Descriptions Theory of Operation 3Ć12 Memory Management Unit (MMU) Interface *+5 %+4%7+6 +06'4(#%'5 6*' +/' #5' 10641..'4 61 6*' " #0& 6*' !#8'; (14/ '/14:  *+5 +06'4(#%' #..195 6*' " 61 5'0& %1//#0&5 61 6*&[...]

     !   3Ć13 The A8 CRT Driver board consists of the following circuits:  Horizontal sweep circuitry  V ertical sweep circuitry  High voltage and grid voltage generator circuitry  Degauss circuit  Beam curre[...]

Block Diagram Descriptions Theory of Operation 3Ć14 Degauss &'1 !'0!3'2 0#+-4#1 +%,#2'! $'#*"1 $0-+ 2&# !-*-0 12##* .#0230# %0'**# &#1# +%,#2'! $'#*"1 0# ',"3!#" 2 #!& .-5#0 9-, 7 +%,#2'! 1-30!#1 &# #%311 !'0!3&a[...]

Block Diagram Descriptions CSA 803C Service Manual 3Ć15 A9 T ouch Panel Assembly  !* !),!+ * '%()!* ' !&)) * + + ()',  %+)!/ ' $! + %* + + ) !&+)),(+ . & +  ,*) +', *  ()+!,$) +', 1[...]

Block Diagram Descriptions Theory of Operation 3Ć16 )&  &"2  ".&, "33&-#,9 ,*.+3 4)& /3$*,,/3$/0& 4/ /4)&2 %&6*$&3 )*3 "33&-#,9 $/.4"*.3 $/..&$4/23 '/2 4)& '/,,/7*.( 0/243  .&  /24  .& :: /[...]

Block Diagram Descriptions CSA 803C Service Manual 3Ć17 T wo other signals of interest are GPIB RQ and GPIB GR. These signals are used by the DMA Controller on the A17 Executive Processor board to comĆ municate with the GPIB controller . The DMA can be programmed by the microprocessor to service either the Inbyte register or the Outbyte register [...]

Block Diagram Descriptions Theory of Operation 3Ć18 The A13 Mother board provides the interconnection for the microprocessor signals and the +5 V power among the following boards:  A14 I/O board  A15 Memory Management Unit (MMU) board  A17 Executive Processor board  A18 Memory board The A14 I/O board contains the following circuitry: ?[...]

Block Diagram Descriptions CSA 803C Service Manual 3Ć19 I/O Delayed Data Buffer This circuit is the interface between the I/O data bus and the Write Delayed data bus. Timer Configuration This circuitry is composed of a latch and three twoĆinput data multiplexers built with discrete gates. When a byte of data on the I/O data bus is latched, some o[...]

Block Diagram Descriptions Theory of Operation 3Ć20 '$   !- /# "-,0(010 -% 1'$ %-**-4(,& "(/"2(10      3$%-/+   (0.* 6 (,1$/% "$  (+$  0$-,1/-**$/ (,1$/% "$  5$"21(3$ ./-"$00-/  (,1$/% "$  ([...]

Block Diagram Descriptions CSA 803C Service Manual 3Ć21 Time Base/Controller Interface Data is transferred to and from the Time Base/Controller subsystem and to and from the MMU IC through this interface. Executive Processor (EXP) Interface This circuitry consists of bidirectional buffers, address mapping programĆ mable array logic (P AL), and in[...]

Block Diagram Descriptions Theory of Operation 3Ć22 W aveform Display RAM This memory circuitry consists of 65,536 bytes. These bytes contain the minimum/maximum pairs of values, along with color index and overrange/ underrange information. Video DigitalĆtoĆAnalog Converter (DAC) This circuit converts the digital data from the Display IC into an[...]

      " ! 3Ć23 !  This coprocessor is a highĆspeed, floatingĆpoint processor that executes instructions in parallel with the EXP . The EXP programs and controls the num[...]

Block Diagram Descriptions Theory of Operation 3Ć24 (%  %-/18 /!1$ 01/5)$%2 3(% 7%#43)5% 01/#%22/1   6)3( 2823%-   /.95/,!3),%   !.$  &/1 -/23 /0%1!3)/.2 400/13 #)1#4)318 &/1 3(% -%-/1)%2 !.$ $)!'./23)# #)1#4)318 &am[...]

  " #"!$ #   "& % 3Ć25 #    *' .'.03: +/%-6&'4 4 :45'.   #/& 0/<70-#5+-' ?[...]

   "   3Ć26 "  '(1 "(0"3(2 /0.4(#$1 12 -#!7 /.5$0 2. 2'$ -.-84.+ 2(+$   #30(-& 2'$ /.5$0$#8.%% /$0(.#1 .% 2'$ [...]

Block Diagram Descriptions CSA 803C Service Manual 3Ć27 &#  #" +1#/!,++#!1 ,4#/ +)6 ,/"0 -/,3'"# -,4#/ ,+)6 1, 1&# '+1#/$!# #14##+ 1&# 0*-)'+% &#" !,++#!1,/0   +" /' ,+ ! )#  ?[...]

 " #" $# "(   "$ 3Ć28 The Acquisition system consists of two boards: the A27 Acquisition Analog board and the A28 Acquisition MPU board. The A27 Acquisition Analog board consists of the following major blocks:  Programmable gain amplifi[...]

Block Diagram Descriptions CSA 803C Service Manual 3Ć29 %"+ 1%" -/, "00,/ /".2"010  %/!4/" 1&*&+$ *"02/"*"+1 02 % 0  -/,-$1&,+ !")6 *"02/"*"+1 1%" ,*-/1,/ &0 -/,$/**"! #,/ 1%" --/,-/&1" *"[...]

      3Ć30  A microprocessor controls the Acquisition system, which has 64 Kbytes of EPROM for code storage, 16 Kbytes of shared RAM, and 8 Kbytes of unĆ shared RAM. The microprocesso[...]

CSA 803C Service Manual 4Ć1 P erformance V erification This section contains procedures to check electrical specifications and examine measurement limits listed in T able 4Ć1. Use these procedures to check the CSA 803C following repair , or to verify that the CSA 803C meets specifications. T o functionally test the CSA 803C, simply perform the pr[...]

Performance V erification Performance V erification 4Ć2 T ableĂ4Ć1:ăMeasurement Limits, Specifications, and F unctional T ests (Cont.) Procedure Description F unctional T ests Specifications (Check) Measurement Limits (Examine) / ( , -*0  ,  &+".  ,  &+&q[...]

Performance V erification CSA 803C Service Manual 4Ć3 T able 4Ć2 (T est Equipment), contains suggested test equipment for use in this manual. Procedure steps are based on the test equipment examples given, but you may substitute other equipment with similar specifications. The use of different equipment may alter test results, setup information, [...]

Performance V erification Performance V erification 4Ć4 T ableĂ4Ć2:ăT est Equipment (Cont.) Description Examples of Applicable T est Equipment Minimum Specification Adapters BNC femaleĆtoĆmale Dual Banana T ektronix Part 103-0090-00 BNC maleĆtoĆfemale Dual Banana T ektronix Part 103-0035-00 SMA maleĆtoĆBNC female (8 required) T ektronix P[...]

Performance V erification CSA 803C Service Manual 4Ć5 T ableĂ4Ć2:ăT est Equipment (Cont.) Description Examples of Applicable T est Equipment Minimum Specification T orx Head ScrewĆ driver #10 tip T ektronix Part 003-0814-00 #15 tip T ektronix Part 003-0966-00 #20 tip T ektronix Part 003-0866-00 External Loopback Connector RSĆ232ĆC connecĆ t[...]

      4Ć6              ?[...]

       4Ć7      */0.1)#*0 #.&( 1) #. #.0&$&!0# 1) #.  #),#.01.#   0# +$ (& .0&+* ?[...]

Performance V erification Performance V erification 4Ć8 CSA 803C T est Record (Cont.) Maximum Outgoing Incoming Minimum Performance T est  )+!# !% !)*+ &$')+$%+ (,!*!+!&% *,)$%+  %%#  "  +  "'&!%+ +'  [...]

Performance V erification CSA 803C Service Manual 4Ć9 CSA 803C T est Record (Cont.) Maximum Outgoing Incoming Minimum Performance T est  )        )    [...]

Performance V erification Performance V erification 4Ć10 CSA 803C T est Record (Cont.) Maximum Outgoing Incoming Minimum Performance T est V ertical Offset Accuracy , Third Compartment " 2m V Step 10. 400 mV 398 mV __________ __________ 402 mV Step 12. 1 V 0.998 V __________ __________ 1.002 V 2 V 1.998 V __________ __________ 2.002 V -400 mV[...]

       4Ć11 *( +-* 0- .  "$) 2$/#  . /0+ $''0./-/$*) /#/ .#*2. 2#/ / ./ ,0$+6 ( )/ $. )   ) #*2 /* *)) / $/ # */# - +-* 0- . - ,0$- *)'4  ?[...]

      4Ć12[...]

    4Ć13     % %&! ! & % & "$!'$% &!  & &$ %"&! %   *  &[...]

Performance T ests Performance V erification 4Ć14 This procedure should be performed within the ambient temperature range of +18  C to +28  C (64  Ft o8 2  F) when a performance check at peak operating conditions is required. Setup to Invoke Power ĆOn Diagnostics CSA 803C (not installed yet) Sampling Head Procedure to Invoke Power ĆO[...]

Performance T ests CSA 803C Service Manual 4Ć15 ăStep 5:ă Set the rear panel PRINCIP AL POWER SWITCH to ON and then set the CSA 803C's front panel ON/STANDB Y switch to ON. When the CSA 803C is first installed, the rear panel PRINCIP AL POWER SWITCH should be set to and left in the ON position. F rom then on, use the front panel ON/ST ANDBY[...]

      4Ć16 "$  $"# " $& %" $ *  #$ #$ #!% '&"  [...]

    !"!    $ # 4Ć17 This procedure shows the setup and lists the test steps for calibrating Loop Gain and Offset Null. Note that this is an optional enhanced accuracy proceĆ dure and it fine tunes internal channel processing circuitry in conjunction with any [...]

Performance T ests Performance V erification 4Ć18 ăStep 3:ă %#%! ' ##$ "  %'#" & # #)& #""' '   #('$(' '# ' &!$ "  "$(' '# [...]

Performance T ests CSA 803C Service Manual 4Ć19 ! 0,' " '(+,"+ )*(*& &(* 0,'+". ,+,"' ,!' ,! %2  +, " '(+,"+ !1 '  -+ ,( ++"+, ,*(-%+!((,"'  [...]

Performance T ests Performance V erification 4Ć20 ăStep 2:ă                     [...]

Performance T ests CSA 803C Service Manual 4Ć21 This procedure checks that the vertical reference voltages are at +5 V and -5 V at J63C on the A26 M/F Acquisition Interconnect board (see FigĆ ure 4Ć1). This procedure should only be performed if maintenance is required. This procedure is not necessary for verifying instrument specificaĆ tions. S[...]

Performance T ests Performance V erification 4Ć22 ăStep 5:ă ' '  "' '% "%   "' !  "%  %! "   + m   ' %!& !"' ! &a[...]

Performance T ests CSA 803C Service Manual 4Ć23 This procedure verifies the correct operation and accuracy of the CSA 803A's horizontal reference clock (see Figure 4Ć2). This procedure should only be performed if maintenance is required. This procedure is not necessary for verifying instrument specificaĆ tions. Specifications The operationa[...]

Performance T ests Performance V erification 4Ć24 ăStep 3:ă Set the Frequency Counter controls/output as follows: Frequency counter Mode Frequency A .......................................... T rigger AC ................................................ Slope +(positive) .......................................... Attenuation 1X ..................[...]

Performance T ests CSA 803C Service Manual 4Ć25 This procedure shows the setups and lists the steps to check the vertical accuracy of the CSA 803C. Setup to Check V ertical Gain CSA 803C Prec. V oltage Source  W !      Procedure to [...]

%"% !  &'& %"% !  %'"! 4Ć26 +'# + Identify the trace as follows:   % icon touch ............................................. Identify Channel (  ) touch ................................... Select !'% [...]

Performance T ests CSA 803C Service Manual 4Ć27 ăStep 11:ă !"!, .*  '! 4 ) check ./' ,!-/'.- #%)-. .$! .'! -+!%"%.%*)- "*, .$! -!..%)# '!0!'- %) %.!  NOTE Specifications are one percent of full scale at each volts/div setting. Example: at 5 m[...]

$"$ !  %&% $"$ !  $&"! 4Ć28 *&# *  !$( -# !$+,- -+ , !)&&)0,   $ $)( -).# [...]

Performance T ests CSA 803C Service Manual 4Ć29 ăStep 3:ă T rigger the CSA 803C as follows: TRIGGER button press ......................................... Source (in major menu) touch ............................... Internal Clock (in popĆup menu) touch ....................... ăStep 4:ă Define the trace as follows: Def T ra icon touch .......[...]

Performance T ests Performance V erification 4Ć30 T ableĂ4Ć4:ăV ertical Offset T est V alues Sens. Source V/ V ert Offset Lower Spec Upper Spec                    [...]

Performance T ests CSA 803C Service Manual 4Ć31 This procedure uses the RMS measurement function to measure the noise on the trace from a sampling head compartment. Setup to Examine V ertical RMS Noise CSA 803C   Procedure to Examine V ertical RMS Noise ăStep 1:ă Install the Calibration Head (067-1413[...]

Performance T ests Performance V erification 4Ć32 ăStep 5:ă , ,! &"'*&  *, "1 + (%%(/+  *, "1 "(' ,(-!  , V ert[...]

Performance T ests CSA 803C Service Manual 4Ć33 Enter Desc (in popĆup menu) touch .......................... ăStep 10:ă Measure the RMS value as follows: MEASURE button press ........................................ Measurements (in major menu) touch ........................ RMS (in popĆup menu) touch ................................ [...]

#!#   $%$ #!#   #%! 4Ć34 This procedure shows the setups and lists the steps to check the Sweep Rate Accuracy . %&" %! (  '" % &#)    High Frequency Signal Generato[...]

Performance T ests CSA 803C Service Manual 4Ć35 ăStep 5:ă Engage high precision calibration mode as follows: UTILITY button press ........................................... P age to Enhanced Accuracy touch .......................... Time Base Cal Mode (in major menu) touch .................. High Prec (in popĆup menu) touch ...................[...]

'%'#$  ()( '%'#$  '!!)!%$ 4Ć36 ,& ) *'.  $(!+ 0)& 0  the Sweep Rate to 1 ns/div . Horizontal ( ) icon touch ...................................... Set !$ !/ to 1 ns/di[...]

Performance T ests CSA 803C Service Manual 4Ć37 ăStep 22:ă  the Main Pos to 55 ns. ăStep 23:ă Set the Main Pos control (lower knob) so that the zero crossĆ ing of the waveform occurs on the center graticule. ăStep 24:ă Set the horizontal reference point to Center as follows, so that the waveform will be expanded about the [...]

# #  $%$ # #  #%  4Ć38 *%! * Set the horizontal reference point to %# as follows, so that the waveform will be expanded around the horizontal center: WA VEFORM button press .......................................  #) % $[...]

Performance T ests CSA 803C Service Manual 4Ć39 This procedure verifies the correct operation and accuracy of the CSA 803A's trigger system. Specifications The specifications for triggering using the external trigger are as follows:  100 mV pĆp at 300 MHz  100 mV pĆp at 1000 MHz  100 mV pĆp at 3.0 GHz Setup to Check T riggering CS[...]

Performance T ests Performance V erification 4Ć40 ăStep 5:ă # ,  '$$'/!& +$,!'&+  -,,'& (*++  $! ,$0 "-+, ,   *![...]

Performance T ests CSA 803C Service Manual 4Ć41 This procedure verifies the correct operation and accuracy of the CSA 803A's Prescaler trigger system. Specifications The specifications for Prescaler triggering are as follows:  800 mV pĆp at 2 GHz  600 mV pĆp at 3 GHz  600 mV pĆp at 10 GHz Setup to Check Prescaler T riggering CSA 8[...]

Performance T ests Performance V erification 4Ć42 ăStep 3:ă Connect the PSPL X1 output to the power meter/sensor (meter/ sensor must be calibrated). Set the Generator frequency to 2 GHz.  the Generator output until the power meter reads: 2.0 dBm (800 mV pĆp ). Use correction factors for the sensor . ăStep 4:ă Connect the PSP[...]

Performance T ests CSA 803C Service Manual 4Ć43 This procedure verifies the correct operation and accuracy of the CSA 803A's Internal Clock signal. Measurement Limits The measurement limits of the internal clock pulse are as follows: H rise time v 2.5 ns H frequency of 100 kHz ±3% accuracy H duty cycle 50% ±3% Setup to Examine Internal Cloc[...]

Performance T ests Performance V erification 4Ć44 ăStep 5:ă Set up the CSA 803C as follows: UTILITY button press ........................................... Instrument Options (in major menu) touch .................... Edge Mode (in popĆup menu) touch .......................... ăStep 6:ă On the CSA 803C, press the AUTOSET button. ăStep 7:ă [...]

Performance T ests CSA 803C Service Manual 4Ć45 This procedure verifies the correct operation and accuracy of the CSA 803A's Calibrator . Measurement Limits The measurement limits of the calibrator are as follows: H amplitude 250 mV ±15% H rise time ≈ 250Ăps Setup to Examine Calibrator CSA 803C  ?[...]

Performance T ests Performance V erification 4Ć46 ăStep 6:ă On the CSA 803C, press the AUTOSET button. ăStep 7:ă Check the peak ĆtoĆpeak amplitude as follows: MEASURE button press ........................................ Measurements (in the major menu) touch ..................... Peak ĆP eak (in the popĆup menu) touch ....................[...]

    5Ć1  This section contains procedures to check electrical specifications, to exĆ amine measurement limits, and to manually set all internal adjustments listed in T able 5Ć1. Use these procedures to return the C SA 803C to speciĆ fied operation follo[...]

   5Ć2          (Ex[...]

Adjustments CSA 803C Service Manual 5Ć3 T able 5Ć2 (T est Equipment), contains suggested test equipment for use in this section. Procedure steps are based on the test equipment examples given, but you may substitute other equipment with similar specifications. The use of different equipment may alter test results, setup information, and related c[...]

Adjustments Adjustment Procedures 5Ć4 T ableĂ5Ć2:ăT est Equipment (Cont.) Description Examples of Applicable T est Equipment Minimum Specification Attenuator , 2X 50 W , SMA , one male and one female T ektronix Part 015-1001-00 Power Supplies T roubleshooting Fixture T ektronix 067-1264-00 Extended Diagnostics 11000ĆSeries Power Supplies troub[...]

Adjustments CSA 803C Service Manual 5Ć5 T ableĂ5Ć2:ăT est Equipment (Cont.) Description Examples of Applicable T est Equipment Minimum Specification Board Removal T ools StraightĆslot screwĆ driver , large T orx Ćdrive screwĆ driver , T Ć7, T Ć8, T Ć10, T Ć15, T Ć20, T Ć25 Allen (hex) Wrench, 1/16Ćinch Nutdrivers, 3/16Ćinch, 1/4Ćin[...]

   5Ć6 *( +-* 0- .  "$) 2$/#  . /0+ $''0./-/$*) /#/ .#*2. 2#/ / ./ ,0$+6 ( )/ $. )   ) #*2 /* *)) / $/ # */# - +-* 0- . - ,0$- *)'4  '$-/  6 -$ . ?[...]

Adjustments CSA 803C Service Manual 5Ć7 This procedure shows the setup and lists the steps to examine the MeaĆ sured V oltage Supply and to check and adjust the V oltage Reference and the Regulator Reference (see Figures 5Ć1, 5Ć2, and 5Ć3). This procedure should only be performed if the instrument is out of measurement limits and maintenance i[...]

Adjustments Adjustment Procedures 5Ć8 ăStep 4:ă               P106 (T o A13 Mother Board Connector) TP200 VCC TP300 GND Lithium Battery (BT150)[...]

Adjustments CSA 803C Service Manual 5Ć9 Setup to Examine/Adjust V oltage Reference CSA 803C A2A2 Control Rectifier Board (see Figure 5Ć2) T o TP221 T o TP701 Digital V oltmeter Hi Low This procedure should only be performed if maintenance is required. This is not necessary for verifying instrument specifications. Procedure to Examine/Adjust V olt[...]

$"##" $"## !$!" 5Ć10 %# %  the +5.2 V Ref, R800, on the A2A2 Control Rectifier board to +5.20 V . %# % Remove the Digital Voltmeter leads from the test points. %# % Set the rear panel PRINCIP AL POWER SWITCH to OFF . %[...]

Adjustments CSA 803C Service Manual 5Ć11 Setup to Examine/Adjust Regulator Reference CSA 803C A4 Regulator Board (see Figure 5Ć3) T o Com T est Point T o Ref T est Point Digital V oltmeter Hi Low Procedure to Examine/Adjust Regulator Reference ăStep 1:ă Make the connections shown in the setup and Figure 5Ć3 diaĆ grams. Check that the CSA 803C[...]

Adjustments Adjustment Procedures 5Ć12 Ref T est Point Com T est Point R730 +10 V Ref Figure 5Ć3:ăA4 Regulator Board T est Point and Adjustment Locations[...]

     5Ć13  !+ (*'-* + '/+ ,  +,-( & $!+,+ ,  +,(+ ,' 0%!& & "-+, ,    '#, '* & ,    *!.* ?[...]

Adjustments Adjustment Procedures 5Ć14 Setup to Examine/Adjust the Display CSA 803C Procedure to Examine/Adjust the Display WARNING T o prevent electric shock, use extreme caution when performing the following adjustment. ăStep 1:ă * (*& ," (%%(/#'! +,,#'!+ #' ," (** %#+,  ?[...]

Adjustments CSA 803C Service Manual 5Ć15 ăStep 13:ă  .3"' Run (- 2'$ , ).0 ,$-3 ăStep 14:ă " 2' 2 2'$ /0(, 07 ".+.01 0$# &0$$- -# !+3$ 0$ -.2 1$/ 0 2$# (- 2'$ 5'(2$ &0(# / 22$0- WARNING      ?[...]

Adjustments Adjustment Procedures 5Ć16 ăStep 26:ă  /$/ /$! +(+- .(! %. 2$%/! / /$! /+, #-4 / /$! +//+) * /$! '#-+0* +* /$! -%#$/ .% ! +" /$! %.,(4 %. 0/ +"" /$/ %. /$! 1!-/%( -./!- (%*!. -! *+/ 1%.%(! +* /$! -%#$/ .% ! +" /$! %.,[...]

Adjustments CSA 803C Service Manual 5Ć17 ăStep 40:ă  &0 ' +! '$') "*($0* +!+ "* +! Red Display  Green Disply ' ) Blue Display  *!'. *-) '$') "%(,)"+"* +!& ()')% +! '$$'."&[...]

Adjustments Adjustment Procedures 5Ć18 SCREEN FOCUS VERTICAL POS R311 HĆPOS R500 HĆSIZE R501 HĆLIN R502 VERT SIZE L321 Figure 5Ć4:ăA8 CRT Driver Board Adjustment Locations[...]

Adjustments CSA 803C Service Manual 5Ć19 GREEN R201 RED R200 BLUE R203 CONVERGENCE R210 Figure 5Ć5:ăA7 CRT Socket Board Adjustment Locations[...]

Adjustments Adjustment Procedures 5Ć20 This procedure verifies the correct operation and accuracy of the CSA 803A's input/output systems (see Figure 5Ć6). This procedure should be performed only if maintenance is required. Its use is not necessary for verifying instrument specifications. Measurement Limits The measurement limit for the real [...]

 *()#$)(   '+ $*" 5Ć21 .)& . Perform the following operations in the order given:  Set the front panel ON/ST ANDB Y switch to STANDB Y .  Remove the L bracket on the front of the card cage.  Remove both plastic retaining strips from the top of card cage.  R[...]

" !! " !! " 5Ć22 #! # Remove the frequency counter from the power module. #! # Set the CSA 803C ON/STANDB Y switch to ST ANDBY . #! # Replace the circuit boards (rearranged in Step 2) in their origiĆ nal positions. Ground C510 R[...]

    6Ć1         !  "    ?[...]

   6Ć2               ?[...]

      6Ć3   #% #  ##")     $ $""  '  $[...]

   6Ć4[...]

    6Ć5           #   [...]

 "     6Ć6 CAUTION             ?[...]

      6Ć7 Observe the following precautions to avoid damage:  Minimize handling of staticĆsensitive components.  T ransport and store staticĆsensitive components or assemblies in their original containers, antiĆstatic[...]

Corrective Maintenance Maintenance 6Ć8 0$  !)$ 7 0 ",+3$+($+1 /$%$/$+"$ %,/ %(+#(+& ",++$"1,/ +# 0"/$4 )," 1(,+0 4'$+ /$*,3(+& +# /$-) "(+& %($)# /$-) "$ !)$ 2+(10 0 '$ %(/01 ",)2*+ (+ 1'$ 1 !)$ )(010 1'$  1, !$ /$*,3$# ,/ /$-) &q[...]

!##%'  %     #'  & 6Ć9  (*) !'" % &# #!$$ #  ! %  %!  !' "?[...]

Corrective Maintenance Maintenance 6Ć10 T ableĂ6Ć2:ăFRU Removal/Replacement Figure Cross Reference (Cont.) FRU to be Removed/ Replaced Figures to Reference During Removal Page A13 Mother Board Figure 6Ć7 T op View of the Card Cage 6Ć30 ............................. Figure 6Ć18 Removing/Replacing the A13 Mother Board 6Ć48 .............. Figu[...]

!##%'  %     #'  & 6Ć11  (*) !'" % &# #!$$ #  ! %  %!  !' "[...]

   6Ć12                   ?[...]

Corrective Maintenance CSA 803C Service Manual 6Ć13 -+# ..*'!2'-,1 -$ 2&#   +6 0#/3'0# 2&2 2&# .-5#0 0#+', -,  - #*#!20'!**6 *-!) 2&# .-5#0 -, 31# 2&# $-**-5',% .0-!#"30# ăStep 1:ă 5'2!& 2&# 0#0 .,#* ?[...]

   6Ć14 A17 Main Processor A18 Memory A15 Memory Management Unit (MMU) A8 CRT Driver A11 Front P anel Button A9 T ouch P anel A10 Front P anel Control A14 Input/Ouput (I/O) Fan Motor Housing A1 M/F Strobe Drive A3 M/F Power Connect A4 Regulator Acquisit[...]

Corrective Maintenance CSA 803C Service Manual 6Ć15 A28 Acquisition MPU Board A26 M/F Acquisition Interconnect Board A19 StrobelTDR Buffer Board A21 Acquisition Analog Board A20/A21 Head Interconnect Boards (Power Only) A22/A23 Head Interconnect Boards Figure 6Ć1:ąField Replaceable Unit (FRU) Locator (Cont.)[...]

   6Ć16 The Power Supply module slides out of the rear of the CSA 803C for mainteĆ nance and troubleshooting. It may also be removed to gain better access to the A3 M/F Power Connect board or the A4 Regulator board. See Figure 6Ć2 and Figure 6Ć3 for [...]

Corrective Maintenance CSA 803C Service Manual 6Ć17 J81 J65 J70 J66 J63 J64 J62 Power Supply Module Rear Figure 6Ć3:ăA2A2 Control Rectifier Board Connector Locations   # !  $ "& "  !      &apo[...]

   6Ć18                ?[...]

Corrective Maintenance CSA 803C Service Manual 6Ć19 See Figure 6Ć2 for connector and screw locations. Remove and replace the fan motor as follows: ăStep 1:ă Using a pencil or tape, mark the top of the fan motor housing for later use in determining the positioning of the motor . Remove the four screws securing the housing to the rear of the inst[...]

Corrective Maintenance Maintenance 6Ć20 WARNING The cathode ray tube (CRT) may retain a dangerous electrical (16 kV) charge. T o prevent electric shock, fully discharge the anode before removing the CRT . Short the anode lead from the CRT to the chassis. Wait approximately ten minutes and again firmly short the anode lead to the chassis. Then, rem[...]

      6Ć21   Set the A9 T ouch Panel Assembly aside. T o avoid stressing the ribbon cable that is still connected to the A9 T ouch Panel Assembly , and to keep the assembly from cluttering your work spa[...]

   6Ć22                 ?[...]

Corrective Maintenance CSA 803C Service Manual 6Ć23 CRT Cover CRT Cover T orx Head Screws (3) Figure 6Ć4:ăRemoving/Replacing the CRT Cover[...]

Corrective Maintenance Maintenance 6Ć24 A7 CRT Socket Board Cover A7 CRT Socket Board Cover T orx Head Screws (2) T ransformer T orx Head Screw (Removed) T ransformer Cover A8 CRT Driver Board CRT Anode Lead Cap A9 T ouch P anel Assembly A10 Front P anel Control Board Figure 6Ć5:ăRemoving/Replacing the Cathode Ray T ube[...]

Corrective Maintenance CSA 803C Service Manual 6Ć25 T orx Head Screws (4) T orx Head Screws (4) QuickĆDisconnect Ground Connector To p C R T Support Bar Bottom CRT Support Bar Figure 6Ć6:ăRemoving/Replacing the CRT T orx Head Screws[...]

Corrective Maintenance Maintenance 6Ć26 See Figures 6Ć23, 6Ć26, and 6Ć32 for connector , screw , and index locations. Remove and replace the Acquisition unit as follows (the Acquisition unit can be removed with the instrument in the normal upright position for all steps): CAUTION     ?[...]

      6Ć27 $! %)-.,/(!). *).%)- .$! "*''*1%)# )/(!, *" ..!,%!- *) .$! "*''*1%)# *, - H .1* ..!,%!- %) .$!  )   -*&am[...]

Corrective Maintenance Maintenance 6Ć28 Emergency and First Aid Information % ) & "%*# &%** -"*! *! #"*!"+$ **(") ", /&+( $( %/ ( '(&,"( *! &##&-"% "%&($*"&%[...]

      6Ć29 "& '&&,'*+ * '* $,*"$ "&,*'&&,"'& /",! !++"+2%'-&, '%(&[...]

   6Ć30 J78 A18 Memory A14 Input/Output (I/O) A17 Executive Processor (EXP) A15 Memory Management Unit (MMU) Plastic Board Guides J77 J77 J72 J90 J83 J52 J57 J53 Rear Panel Rear of Oscilloscope     ?[...]

Corrective Maintenance CSA 803C Service Manual 6Ć31 A1 M/F Strobe Drive Board $&,# % ('#$%* )*') ( #")* #&-   " +() 0 % 0 &( &%%*&(  )(-  % "%. #&*"&%) ăSt[...]

Corrective Maintenance Maintenance 6Ć32 A3 M/F P ower Connect Board $&,# % ('#$%* )*') ( #")* #&-   " +() 0 0 0 % 0 &( &%%*&(  )(-  % "%. #&*"&am[...]

Corrective Maintenance CSA 803C Service Manual 6Ć33 A4 Regulator Board Removal and replacement steps are listed below . See Figures 6Ć2, 6Ć3, 6Ć9, and 6Ć32 procedures for removal for connector , screw , and index locations. ăStep 1:ă Remove the P ower Supply module. (See Power Supply Module Removal in this section.) ăStep 2:ă Set the instr[...]

Corrective Maintenance Maintenance 6Ć34 T orx Head Screws (2) J96 J60 J95 J57 Figure 6Ć9:ăRemoving/Replacing the A4 Regulator Board[...]

Corrective Maintenance CSA 803C Service Manual 6Ć35 A5 Time Base/Controller Board A6 Calibrator Board Removal and replacement steps are listed below . See Figures 6Ć10 and 6Ć32 for connector , screw , and index locations. ăStep 1:ă Place the instrument in the inverted position. ăStep 2:ă T o remove the A6 Calibrator Board, remove connectors [...]

Corrective Maintenance Maintenance 6Ć36                       ?[...]

!    !   6Ć37        !   $".+ , 3 3 3 3 3 3 3 3[...]

!!"$ " " 6Ć38 %" % Remove the single T orx head screws that secures the transĆ former , on the A8 CRT Driver board, to the instrument chassis. This screw is located at the rear of the transformer . The A8 CRT Driver board is now not attac[...]

Corrective Maintenance CSA 803C Service Manual 6Ć39 T orx Head Screw J52 J57 J56 J54 J55 Figure 6Ć12:ăRemoving/Replacing the A8 CRT Driver Board[...]

Corrective Maintenance Maintenance 6Ć40 A9 T ouch Panel Assembly Removal and replacement steps are listed below . See Figures 6Ć5, 6Ć15 and 6Ć32 for connector , screw , and index locations. Remove and replace the A9 T ouch Panel assembly as follows: ăStep 1:ă Set the instrument on its right side. (The CRT will now be at the top.) ăStep 2:ă [...]

Corrective Maintenance CSA 803C Service Manual 6Ć41 T orx Head Screws (2) A9 T ouch P anel Assembly Front of Instrument as Viewed from the Bottom Figure 6Ć13:ăA9 T ouch Panel Assembly T orx Head Screws J73 Connector Figure 6Ć14:ăRemoving/Replacing the A9 T ouch Panel Assembly[...]

   6Ć42       Removal and replacement steps are listed below . See Figures 6Ć5, 6Ć11, 6Ć15 and 6Ć32 for connector , screw , and index locations.   Rem[...]

Corrective Maintenance CSA 803C Service Manual 6Ć43 J72 J74 J73 J75 Support Bracket T orx Head Screws (2) Figure 6Ć15:ăRemoving/Replacing the A10 Front P anel Control Board[...]

Corrective Maintenance Maintenance 6Ć44 A11 F ront Panel Button Board Removal and replacement steps are listed below . See Figures 6Ć5, 6Ć11, 6Ć15, 6Ć16 and 6Ć32 for connector , screw , and index locations. ăStep 1:ă Remove the CRT shield. (Refer to the removal instructions under Cathode Ray T ube Removal/Replacement earlier in this section[...]

Corrective Maintenance CSA 803C Service Manual 6Ć45 A12 Rear P anel Assembly Removal and replacement steps are listed below . See Figures 6Ć2, 6Ć17 and 6Ć32 for connector , screw , and index locations. ăStep 1:ă Remove the connectors from the RS Ć232ĆC, the GPIB, and the PRINTER connector holders. ăStep 2:ă Remove the eight T orx head scr[...]

Corrective Maintenance Maintenance 6Ć46 GPIB Connector PRINTER Connector RSĆ232ĆC Connector J78 To p (As Viewed from the Rear with the Rear Panel Removed) Figure 6Ć17:ăRemoving/Replacing the A12 Rear P anel Assembly[...]

Corrective Maintenance CSA 803C Service Manual 6Ć47 A13 Mother Board !(*0' ) ,!+'!(!). -.!+- ,! '%-.! !'*1  !! %#/,!- 4 4 ) 4 "*, *))!.*,  -,!1  ) %) !2 '*.%*)- ăStep 1:ă !(*0! .$! .$,!!  *,2 $! -,!1- .$. -!/,! .[...]

Corrective Maintenance Maintenance 6Ć48 J63A T orx Head Screws (6) Figure 6Ć18:ăRemoving/Replacing the A13 Mother Board[...]

        6Ć49     !! %#/,!- 4 4 4 ) 4 "*, *,  *))!.*,  -,!1  ) %) !2 '*?[...]

Corrective Maintenance Maintenance 6Ć50 J78 Lithium Battery (BT130) P105 (to A13 Mother Board Connector) Front of Oscilloscope J77 J90 J72 Figure 6Ć19:ăRemoving/Replacing the A14 I/O Board[...]

Corrective Maintenance CSA 803C Service Manual 6Ć51 A15 Memory Management Unit (MMU) Board See Figures 6Ć4, 6Ć7, 6Ć20, and 6Ć32 for board, connector , screw , and index locations. Remove and replace the A15 MMU board as follows: ăStep 1:ă Remove the three T orx head screws that secure the CRT cover , and then remove the CRT cover . ăStep 2:[...]

Corrective Maintenance Maintenance 6Ć52 J83 J53 J57 J52 Front of Oscilloscope P101 (T o A13 Mother Board Connector) Figure 6Ć20:ăRemoving/Replacing the A15 MMU Board[...]

Corrective Maintenance CSA 803C Service Manual 6Ć53 A17 Executive Processor (EXP) Board See Figures 6Ć4, 6Ć7, 6Ć21, and 6Ć32 for board, connector , screw , and index locations. Remove and replace the A17 Executive Processor board as follows: ăStep 1:ă Remove the three T orx head screws that secure the CRT cover , and then remove the CRT cove[...]

Corrective Maintenance Maintenance 6Ć54 J77 Front of Oscilloscope P104 (T o A13 Mother Board Connector) Figure 6Ć21:ăRemoving/Replacing the A17 Executive Processor Board[...]

Corrective Maintenance CSA 803C Service Manual 6Ć55 A18 Memory Board See Figures 6Ć4, 6Ć7, 6Ć21, 6Ć22, and 6Ć32 for board, connector , screw , and index locations. Remove and replace the A18 Memory board as follows: ăStep 1:ă Remove the three T orx head screws that secure the CRT cover , and then remove the CRT cover . ăStep 2:ă Remove bo[...]

Corrective Maintenance Maintenance 6Ć56 P106 (T o A13 Mother Board Connector) Front of Oscilloscope Lithium Battery (BT150) Figure 6Ć22:ăRemoving/Replacing the A18 Memory Board[...]

 "     " ! 6Ć57    !  "$+! # '%!"#) ()%( ' !() !$,   *'( /?[...]

Corrective Maintenance Maintenance 6Ć58 J2B J1B J3A J4A J3 C J4 C T orx Head Screws (2) J29A J30A J33A J33B J32 J34 Figure 6Ć23:ăRemoving/Replacing the A19 Strobe/TDR Buffer Board[...]

Corrective Maintenance CSA 803C Service Manual 6Ć59 A20/A21 Head Interconnect (Power Only) and A22/A23 Head lnterconnect Boards Removal and replacement steps are listed below . See Figures 6Ć23, 6Ć24, 6Ć25, 6Ć26, 6Ć28, 6Ć29, and 6Ć32 for connector and screw locations. ăStep 1:ă Remove the Acquisition unit and position the Acquisition unit[...]

 ""$& $ $ 6Ć60 J1/2/3/4 %" *) &! $   $" $  '" (  $ ?[...]

Corrective Maintenance CSA 803C Service Manual 6Ć61 Front View of F ront Subpanel Assembly Rear View of Front Subpanel Assembly Power Only Compartments T orx Head Screws A20 and A21 Head Interconnect Boards (Power Only) T orx Head Screws A22 and A23 Head Interconnect Boards Retaining T abs (4 per Board) Retaining T abs (4 per Board) A22 and A23 He[...]

Corrective Maintenance Maintenance 6Ć62 A26 M/F Acquisition lnterconnect Board  ')0& ( , *& ' (. . *- , &$-.   &)1   $"/, - 4 4 4 4 4 4 ( 4 !), )(( .),  -, 1  ( $( 2 &a[...]

Corrective Maintenance CSA 803C Service Manual 6Ć63 ăStep 7:ă Remove the Front Subpanel assembly with the head interconĆ nect boards intact. ăStep 8:ă Remove the six T orx head screws to remove the A26 M/F AcĆ quisition lnterconnect board. T o replace the A26 M/F Acquisition Interconnect board, perform the previous steps in reverse order . A[...]

Corrective Maintenance Maintenance 6Ć64 A27 Acquisition Analog Board Removal and replacement steps are listed below . See Figures 6Ć23, 6Ć26, 6Ć28, and 6Ć32 for board guide, screw , and index locations. ăStep 1:ă Remove the Acquisition unit and position the Acquisition unit in the upright position. ăStep 2:ă Remove the two T orx head screw[...]

Corrective Maintenance CSA 803C Service Manual 6Ć65 A28 Acquisition MPU Board Removal and replacement steps are listed below . See Figures 6Ć23, 6Ć26, 6Ć29, and 6Ć32 for board guide, screw , and index locations. ăStep 1:ă Remove the Acquisition unit and position it upright. ăStep 2:ă Remove the two T orx head screws on each black retaining[...]

Corrective Maintenance Maintenance 6Ć66 " )*(-*+ (* *&(.#'! ' *)%#'! ,"  + #' ,"   * (-,%#' #' ,"#+ +,#(' Serial Data Interface Integrated Circuits (SlamĆP ack" ICs)  #+ [...]

      6Ć67 Replace the Serial Data Interface IC as follows:   Using tweezers, place the beveled corner of the replacement IC against the index spring (the original position of this index was noted earli[...]

   6Ć68 A14-Input/Output (I/O) A5-Time Base/Controller     A28-Acquisition MPU A15ĆMemory Management Unit Display Processor Firmware   A18ĆMemory   ?[...]

Corrective Maintenance CSA 803C Service Manual 6Ć69 Firmware Integrated Circuits (Dual InĆLine P ackage" ICs) +( ),4/9$4( 5 $4( .1&$6(' 10 )174 5(2$4$6( %1$4'5 5(( ,*74( < )14 6+(  .1&$6,105 10 ($&+ &,4&7,6 %1$4' +( %1$4'5 $0' 6+(,4 4(52(&6,8( ),4/9$4( ?[...]

   6Ć70  Place the instrument on its right side (if not already in this position) to provide access to the boards upgraded in the firmware upgrade procedure that follows.   Access boards within the card cage as follows:  En[...]

Corrective Maintenance CSA 803C Service Manual 6Ć71 Figure 6Ć31:ăIC InsertionĆExtraction T ool ăStep 4:ă )"* ,#   &(*0 (* !$*&/* + !(%%(/+   &(. ,#   &(*0 (* !*(& ,# * "  #   &(*0 (* $+ ,0)$%%0 %([...]

   6Ć72   Upgrade the A28 Acquisition MPU board firmware as follows:  Remove the Acquisition unit from the instrument.  Remove the A28 Acquisition MPU board from the Acquisition unit (see Figure 6Ć1 for the exact location [...]

      6Ć73   Remove the procedure setup as follows: H Set the PRINCIP AL POWER SWITCH to OFF . H Remove the J860 manufacturing jumper on the A5 Time Base/ConĆ troller board. H Replace the bottom instru[...]

Corrective Maintenance Maintenance 6Ć74 Index MultiĆPin Connectors End T abs Index Index Index Bevel Retaining Clip Mating Recesses Index Spring Cover IC Socket Index Index Index Index Index Index SlamĆPack IC Dual InĆLine Package IC Note:       ?[...]

      6Ć75 Cabling diagrams are provided (in the  section) to show the interĆ connecting cables between the various circuit boards, modules, and assemĆ blies. Use these diagrams as a reference when yo[...]

   6Ć76 "   " #"(  ! "  ' " & "  "  !#   &qu[...]

Corrective Maintenance CSA 803C Service Manual 6Ć77 $1#/ +6  &0 ##+ /#-)!#" 1&1 -/1'!2)/ 2+'1 0&,2)" # !&#!(#"   )# 7 )'010 1&# /#.2'/#" -/,!#"2/#0 1, -#/$,/* T ableĂ6Ć4:ăChecks Required After FRU Replacement FRU Replaced Checks R[...]

Corrective Maintenance Maintenance 6Ć78 T ableĂ6Ć4:ăChecks Required After FRU Replacement (Cont.) FRU Replaced Checks Required A19 Strobe/TDR Buffer Board Power ĆOn Diagnostics Extended Diagnostics Sweep Rate Accuracy Internal Clock A20/A21 Head InterconĆ nect (Power Only) Boards Functional check of a power Ćonly device such as an SDĆ42, SD[...]

    6Ć79    This section provides the information necessary to troubleshoot a faulty CSA 803A to the field replaceable unit (FRU) level. In most cases a FRU is a circuit board. The primary means for troubleshooting[...]

    6Ć80 Kernel diagnostics are executed each time the front panel ON/STANDB Y switch is set to ON. The CSA 803C performs powerĆon diagnostics on its microprocessor subsystems and SelfĆ T est diagnostics on all of its major circuits. When [...]

        6Ć81 %"4"..+. +!"    #+. 0%"  -1&/&0&+* ,.+ "//+.  #.+) "&0%". &*0".*( 0"/0 ,+&*0/ +. / ?[...]

Diagnostic T roubleshooting Maintenance 6Ć82  % 4 %#,-, -" ,.,2,-& "+-+, ( -" 1-' #!'(,-# ++(+ #'1 (, T ableĂ6Ć5:ăExtended Diagnostics Error Index Code Descriptions Description Meaning  1.-#/  #,)%2[...]

#$  "%#$   "& % 6Ć83 #"! +'! '& !( ' !&'%( !' %'(%!& '" ' &  !( ) '' &[...]

Diagnostic T roubleshooting Maintenance 6Ć84 The upper portion of the display screen is used to display diagnostic menus. Menus are comprised of menu items and menu fields. Menu items are rows of items that can be selected, while menu fields are columns of status inĆ formation. There are four tiers of menus which may appear in the menu area (only[...]

Diagnostic T roubleshooting CSA 803C Service Manual 6Ć85  " (blank) This status indicates that the test requires action from the user (such as the front panel verification tests), or that the test is for stimulus only (such as the manual calibration tests). This status does not provide failure status. T o execute this test, select it indiv[...]

 !#$  "!%#!!$   $   6Ć86 The RSĆ232ĆC port drives a terminal which conforms to the ANSI 3.64 stanĆ dard. In this mode, the terminal provides a screenĆdriven, interactive human interface. This mode is useful when either the display or touch panel is not functioning properly , or w[...]

%#(),-%  +).&",$))-%(#   "+/% " (.& 6Ć87 The SelfĆ T est diagnostics and Extended Diagnostics are accessible using the two commands listed in T able 6Ć6.  &"2431,-"' )!" )''(!, "!"+ +#.'"[...]

!"$%  #"& $""%! !%!! 6Ć88 The  query returns pass/fail information from the most recent invocaĆ tion of SelfĆ T est diagnostics or Extended Diagnostics. Examples of possible responses and explanations, are as follows:   ?[...]

Diagnostic T roubleshooting CSA 803C Service Manual 6Ć89 The CSA 803C holds four lithium batteries to provide power when the instruĆ ment is turned off. The following discussions provide criteria for determining if a battery has exceeded its lifetime, and is thus causing incorrect instruĆ ment operation. (A battery's lifetime will typically[...]

     6Ć90 !"+.!  ,+3!. 71, !("7  !/0 !#%*/8 10 &1/0 "0!. 0$! 4!10%2! ,.+!//+. $/ .1* %0/  !.*!( %#*+/0%/8 0$! ".+*0 ,*!( 100+*/ .! /**! 5 0$! 4!1[...]

Diagnostic T roubleshooting CSA 803C Service Manual 6Ć91 FRU Name Abbreviations Abbreviations of FRU names are listed in T able 6Ć8. T ableĂ6Ć8:ăBoard FRUs FRU Board Board No STROBEDR M/F Strobe Drive board (A1) MFPOWERR M/F Power Connect board (A3) REG Regulator board (A4) TBC T ime Base/Controller board (A5) CRTSOC CRT Socket board (A7) CRTD[...]

    6Ć92       #'% $   ! %   &$ $ # $%?[...]

"#&'  %#( &##'"   %) "( 6Ć93 *(') (&+&'! %%#% #& Error index codes for the Executive subsystem are listed in T able 6Ć10 along with the suspected FRUs.   ,.?[...]

Diagnostic T roubleshooting Maintenance 6Ć94 T ableĂ6Ć11:ăExecutive Processor Status LED Configuration DS307 DS306 Significance ON ON Power ĆOn ON OFF K ernel T ests Executing OFF ON K ernel T ests F ailed OFF OFF K ernel T ests Finished GND +5V TP201 (MSB) TP205 (LSB) DS307 DS306 Figure 6Ć33:ăA17 Executive Processor Board T est Point and St[...]

Diagnostic T roubleshooting CSA 803C Service Manual 6Ć95 T ableĂ6Ć12:ăExecutive Processor Manual T ests T est V erification Procedure Front P anel V erify ąHard Keys This test allows you to interactively press the hard keys to verify their operation. This test verifies the operation of a key with both visual and audio feedback. This test requi[...]

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Diagnostic T roubleshooting CSA 803C Service Manual 6Ć97 T ableĂ6Ć12:ăExecutive Processor Manual T ests (Cont.) T est V erification Procedure GPIB ąInrpt Reset ąReset Status ąData Lines ąInterrupt These tests verify the Executive processor interface to the internal GPIB circuitry . The major external GPIB functions are not tested. This test[...]

 #$'(   &$)!'$$( #  #(## 6Ć98 DS200 DS201 DIAG 0 (LSB) DIAG 2 (MSB)  )& .-  $&  '(  $ #( # (()'  $( $#'  " ' &$''$& &&[...]

 !  " !   # " 6Ć99               [...]

 "#'(   &#)!'##( "  "("" 6Ć100 %) ' ( #" &#''#& &&#& "* #' ..+. &*!"3 +!"/ #+. 0%"  -1&/&0&+* ,.+ "//+. ." (&/0"! &*[...]

CSA 803C Service Manual 6Ć101 Other T roubleshooting *+4 4'%5+0/ 1307+&'4 #&&+5+0/#- +/(03.#5+0/ #/& 130%'&63'4 (03 5306$-'; 4*005+/) # (#6-5:   50 5*'  -'7'- *+4 130%'&63' 3'26+3'4 #/ 95'/&'& +#)/045+%[...]

Other T roubleshooting Maintenance 6Ć102 *+4 130%'&63' 3'26+3'4 # 5'45 5'3.+/#- #/& # %0.1#5+$-' ;; 4'3+#- +/5'3(#%' %#$-' '('3 50  #$-' ; (03 # %0.1-'5' &'4%3+15+0/ 0( 5*' '26+1; .'/5 3'26+3&apos[...]

Other T roubleshooting CSA 803C Service Manual 6Ć103 The A14 I/O board has four fuses (see Figure 6Ć37). F200 supplies +5 V to the A12 Rear P anel board. F800 supplies +5 V to the A10 Front P anel ConĆ trol board and the A9 T ouch P anel board. F600 supplies +15 V to the A14 I/O board, card cage, A10 Front P anel Control board, A9 T ouch P anel [...]

$"  " %# $ $ 6Ć104 See Figures 6Ć2 and 6Ć37 for the location of the line fuse and the A14 I/O board fuses, respectively . When a fuse must be replaced, unsolder the fuse from the board. Be careful not to damage the solder pads on the board. (It may be helpful to straighten [...]

Other T roubleshooting CSA 803C Service Manual 6Ć105 Fuse (F200) F use (F600) Fuse (F602) Fuse (F800) Figure 6Ć37:ăA14 I/O Board F use Locator Diagram[...]

Other T roubleshooting Maintenance 6Ć106   )# 6 )'/0/ 0&# 0'*# /# !)' .0',+ #..,./ 0&0 !+ --#. ,+ 0&#  /!.##+ +" 0&# /1/-#!0#" $1)04 / 0&0 !1/# 0&# #..,.  &# / .# )'/0#" '+ 0&am[...]

Other T roubleshooting CSA 803C Service Manual 6Ć107 T ableĂ6Ć18:ăTime Base Calibration Errors Error Message Error Code Suspect FRU "%&( *"$ ) #"(*"&% '(&#$             "$ [...]

Other T roubleshooting Maintenance 6Ć108 When acquisition calibration errors occur , a message will appear on the CSA 803A screen followed by a number that indicates in which Acquisition system the error was detected. Following this number , there will be a string of eight, four Ćdigit error codes that are used to identify possible faulty FRUs. T[...]

CSA 803C Service Manual 7Ć1 Options This section contains information on instrument and power cord options available for your CSA 803C. Y our instrument may be equipped with one or more options. A brief descripĆ tion of each available option is given in the following discussion. Option information is incorporated into the appropriate sections of [...]

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CSA 8,3C Service Manual 2 ." + $&4+ 3.1 .6$1 $,(91$&4+ 3$# .6$1  $&4+ 3.1  .+3 &$  4+3 $3$"3  $&4+ 3.1  $&4+ 3.1  $&4+ 3.1  $&4+ 3.1  $&4+ 3.1     5$1?[...]

CSA 803C Service Manual 3 Horizontal Sweep Circuit HĆSIZE Adjustment HĆPOS Adjustment HĆLIN Adjustment VERT SIZE Adjustment VERT POS Adjustment Raster Scan CRT High and Grid V oltage Generator A7 CRT Socket Board (See Figure 9Ć5) V ertical Sweep Circuit Synchronization Grid Bias Red Green Blue RED Adjustment GREEN Adjustment BLUE Adjustme[...]

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Replaceable Parts Mechanical Parts List 10Ć2  *+"( $%(#* %$ $ * &""  (*)  )* ) (($ %( '+ ! (*( ," $()*$ $ * )*(+*+( $ *+() % * " )* - "" "&am[...]

Replaceable Parts CSA 803C Service Manual 10Ć3 T ableĂ10Ć1:ăBoard FRUs FRU P art Number Description A1 670-9365-06 M/F Strobe Drive A2 620-0022-09 P ower Supply Assembly A3 670-9640-00 M/F Power Connect A4 670-9655-01 Regulator A5 672-0383-00 Time Base/Controller w/Prescaler (Std) A5 672-0384-00 T ime Base/Controller w/o Prescaler (Opt. 10) A6 [...]

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Replaceable Parts CSA 803C Service Manual 10Ć5 CROSS INDEX - MFR . CODE NUMBER TO MANUF ACTURER Mfr . Code City , State, Zip Code Address Manufacturer 0J9P9 GEROME MFG CO INC PO BOX 737 NEWBERG OR 97132 0KB01 ST AUFFER SUPPL Y 810 SE SHERMAN PORTLAND OR 97214 0KB05 NORTH STAR NAMEPLA TE 1281-S NE 25TH HILLSBORO OR 97124 00779 AMP INC 2800 FULLING [...]

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    !   10Ć7                            #"[...]

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Replaceable Parts CSA 803C Service Manual 10Ć9 Fig. & Index No. Mfr . Part No. Mfr . Code 12345 Name & Description Qty Serial No. Effective Dscont T ektronix Part No.    "  #    ?[...]

Replaceable Parts Mechanical Parts List 10Ć10 Fig. & Index No. T ektronix Part No. Serial No. Effective Dscont Qty 12345 Name & Description Mfr . Code Mfr . Part No. CHASSIS, REAR 10-3-1 200-3690-01 1 COVER,HIGH VOL T :AL UMINUM 80009 200369001 -2 211-0722-00 8 SCREW ,MACHINE:6-32 X 0.25,PNH,STL 0KB01 ORDER BY DESC -3 407-3438-02 1 BRACKET[...]

Replaceable Parts CSA 803C Service Manual 10Ć11 A10 A12 A7 1 2 3 4 5 6 7 8 9 10 11 12 13 14 5 15 16 2 17 18 19 20 21 22 2 2 2 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 29 2 16 16 33 5 5 Figure 10Ć3:ăChassis, Rear[...]

Replaceable Parts Mechanical Parts List 10Ć12 Fig. & Index No. T ektronix Part No. Serial No. Effective Dscont Qty 12345 Name & Description Mfr . Code Mfr . Part No. CIRCUIT BOARDS 10-4-1 146-0055-00 2 BATTERY ,DRY :3.0V ,1200 MAH,LITHIUM (BT130, BT150) 61058 BR-2/3A-E2P -2 159-0245-00 4 FUSE,WIRE LEAD:1A ,125V ,F AST (F200, F600, F602, F8[...]

Replaceable Parts CSA 803C Service Manual 10Ć13 12 A17 A18 A14 A15 A13 A4 A5 A1 A3 A8 1 2 3 4 5 6 7 8 9 10 11 12 13 14 12 12 15 16 17 18 19 12 20 12 21 22 1 23 A6 Figure 10Ć4:ăCircuit Boards[...]

'## (*)  %!# (*) !)* 10Ć14 !  %, &  "*(&%!, (*& (!# & *!+ )&%* *-  $  )(!'*!&% (  & (  (* [...]

Replaceable Parts CSA 803C Service Manual 10Ć15 Fig. & Index No. T ektronix Part No. Serial No. Effective Dscont Qty 12345 Name & Description Mfr . Code Mfr . Part No. ACQUISITION MODULE 657-0089-00 1 MODULAR AS SY :ACQUISITION MODULE (EXCHANGE ITEM) 80009 657008900 10-5-1 670-9364-05 1 CIRCUIT BD AS SY :ACQUISITION ANALOG (SEE A27, EXCHAN[...]

Replaceable Parts Mechanical Parts List 10Ć16 A28 A27 A19 A20 A21 A22 A23 A26                                   Figure 10Ć5:ăAcquisition Module[...]

($$ )+*   )-" &,$ 10Ć17 "!  &. '  #+)'&". )+' )"$ '  +"- *'&+ +/  %  *)"(+"'&am[...]

Replaceable Parts Mechanical Parts List 10Ć18 Fig. & Index No. T ektronix Part No. Serial No. Effective Dscont Qty 12345 Name & Description Mfr . Code Mfr . Part No. POWER SUPPL Y 10-6-1 620-0022-09 1 POWER SUPPL Y : (SEE A2, EXCHANGE ITEM) 80009 620002209 -2 200-2222-00 1 GUARD ,FAN : TK2105 08213 -3 211-0744-00 4 SCREW ,MACHINE:6-32 X 2.[...]

Replaceable Parts CSA 803C Service Manual 10Ć19 Fig. & Index No. T ektronix Part No. Serial No. Effective Dscont Qty 12345 Name & Description Mfr . Code Mfr . Part No. ST ANDARD ACCES SORIES 10-7-1 161-0066-00 1 CABLE AS SY ,PWR,:3,18AWG,98 L 0B445 ECM-161-0066-00 -2 161-0154-00 1 CABLE AS SY ,PWR,:3,1.00MM SQ,250V ,10A ,2.5M (OPTION A5 ON[...]

Replaceable Parts Mechanical Parts List 10Ć20 1 2 3 4 5 6 Figure 10Ć7:ăAccessories[...]