Service Manual TDS 310, TDS 320 & TDS 350 Two Channel Oscilloscopes 070-8570-05 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. This document applies for TDS 310, TDS 320, and TDS 350 Oscilloscopes with serial numbers B040100 and above.
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WARRANTY ! " " " ! ! " " ! !
Table of Contents Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix Warranted Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Ć3 Performance Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Ć3 Typical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Ć7 Nominal Traits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents Performance Verification Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Ć1 4Ć3 4Ć3 Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Ć5 Functional Test . . . . . . . .
Table of Contents Enabling Calibration Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Troubleshooting Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Ć35 6Ć36 Repackaging Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Ć49 Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Ć1 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents iv Section Name (Nm:Sect)
List of Figures -+96) ? >" ! " ! %2( " ! -1)27-327 ? -+96) ? >",) " ! 7'-0037'34) 6328 %2)0 -+96) ? > 6-1%6= 92'8-327 )29 %4 -+96) ? >!)'32(%6= 92'8-327 )29 %4 ? ? ? -+96) ? > 03'/ -%+6%1 " ! " ! %2( " ! ! %2( )03; -+96) ? >" ! 03'/
List of Figures Figure 6Ć16:ăFan and Fan Mount Removal . . . . . . . . . . . . . . . . . . . . . . . Figure 6Ć17:ăThe Diagnostics Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 6Ć18:ăThe Error Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 6Ć19:ăMain Board Cal Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 6Ć20:ăPrimary Troubleshooting Procedure . . . . . . . . . . . . . . . . .
List of Tables "#-&; = *(/"- $26*4*5*0/ :45&. "#-&; = *.& "4& :45&. "#-&; = 3*((&3*/( :45&. "#-&; = < 08&3 &26*3&.&/54 "#-&; = /7*30/.
List of Tables viii Section Name (Nm:Sect)
Safety Summary ' ( !#! "( (# & * + ( ' ' (, $& )( #"' $&#* ( ! #& ,#)& $&#( ( #" " (# $& * "( ! (# ( #' #' #$ ' ' (, " #&! ( #" $$ ' (# #$ & (#&' " ' &* $ &'#"" Symbols and Terms ' (+# ( &!' $$ & " ! ") ' H '( ( ! "(' "( , #" ( #"' #& $& ( ' ( ( #) & ') ( " ! (# ( %) $! "( #& #( & $&#$ &(, H '( ( ! "(' "( , #" ( #"' #& $& ( ' ( ( #) & ') ( " $ &'#" " )&, #& #'' # ' (+# ( &!' $$ & #"
Safety Summary Specific Precautions % $( & ! !) "$ '& ! % &! %'$ +!'$ " $%! % &+ &! "$ ( & &! & $ & !% !% !" !$ #' " & ! & &! & Do Not Perform Service While Alone ! !& " $ !$ & $ % $( !$ '%& & ! & % "$! ' & ' %% !& $ " $%! " ! $ $ $%& $ %'% & & ! % "$ % & Use Care When Servicing With Power On $!'% (! & % * %& & % ( $ "! &% & % "$! ' & ! (! " $%! '$+ ! !& &!' *"!% !
Safety Summary Do Not Operate in Explosive Atmospheres Electric Overload TDS 310, TDS 320 & TDS 350 Service Manual xi
Safety Summary xii Section Name (Nm:Sect)
Specifications warranted characteristics, typical characteristics, nominal traits TDS 310, TDS 320 & TDS 350 Service Manual 1Ć1
1Ć2
Warranted Characteristics ++ '- " + - +#,-# , + , +# #' - +&, ( *. '-# # % ) + (+& ' %#&#-, -" - + 0 ++ '- "#, ,. , -#(' %#,-, ('%1 0 ++ '- " + - +#,-# , NOTE In these tables, those warranted characteristics that are checked in the + (+& ' ,-,, starting on page 4Ć11, appear in boldface type under the column Name Performance Conditions " % -+# % " + - +#,-# , (.' #' -" , - % , ( 0 ++ '- " + - +#,-# , ))%1 0" ' -" (, #%%(, () " , ' $.
Warranted Characteristics TableĂ1Ć1:ăWarranted Characteristics Ċ Signal Acquisition System (Cont.) Name Description Accuracy, Offset Volts/Div Setting Offset Accuracy 2 mV/div - 99.5 mV/div ±(0.4% |Net Offset1| + 3 mV + 0.1 div V/div setĆ ting) 100 mV/div - 995 mV/div ±(0.4% |Net Offset1| + 30 mV + 0.1 div V/div setĆ ting) 1 V/div - 10 V/div ±(0.4% |Net Offset1| + 300 mV + 0.
Warranted Characteristics TableĂ1Ć3:ăWarranted Characteristics Ċ Triggering System Name Description Accuracy, Trigger Level, DC Coupled Trigger Source Sensitivity .0 : .& 9 %22)-' %2 &&1%2 9 $)4 4.+21 $)4 1%22)-' &&1%2 ##30!#7 62%0-!+ : .& 9 %22)-'9 , 62%0-!+ : .& 9 %22)-'9 , Trigger Source Sensitivity .0 $)4)1).- &0., 2. 8 )-#0%!1)-' 2.
Warranted Characteristics TableĂ1Ć4:ăPower Requirements Name Description Source Voltage and Frequency 90 to 132 VACRMS, continuous range, for 47 Hz through 440 Hz 132 to 250 VACRMS, continuous range, for 47 Hz through 63 Hz Power Consumption ≤65 Watts (120 VA) TableĂ1Ć5:ăWarranted Characteristics Ċ Environmental, Safety, and Reliability Name Description Atmospherics Temperature: -10_ C to +55_ C, operating; -51_ C to +71_ C, nonĆoperating Relative humidity: to 95%, at or below +40_ C; to 75%, +41_
Typical Characteristics Typical characteristics are described in terms of typical or average performance. Typical characteristics are not warranted. TableĂ1Ć6:ăTypical Characteristics Ċ Signal Acquisition System Name Description Accuracy, DC Gain, Envelope Acquisition Mode ±3% for sec/div settings from 5 Sec/Div to 25 sec/div; TDS 310:ñ2% for sec/div settings from 10 s/div to 10 ns/div; TDS 320:ñ2% for sec/div settings from 10 s/div to 5 ns/div; TDS 350:ñ2% for sec/div settings from 10 s/div to 2.
Typical Characteristics TableĂ1Ć7:ăTypical Characteristics Ċ Triggering System Name Description Error, Trigger Position, Edge Triggering Acquire Mode TriggerĆPosition Error1,2 Sample, Average ±(1 WI + 2 ns) Peak Detect, Envelope ±(2 WI + 2 ns) Source Typical Sensitivity CH1 or CH2 External External/10 0.
Typical Characteristics TableĂ1Ć9:ăTypical Characteristics Ċ Data Handling Name Description 1,2 ≥ 1The time that reference waveforms, stored setups, and calibration constants are retained when there is no power to the oscilloscope. 2Data is maintained by a lithium polyĆcarbon monofluoride battery.
1Ć10
Nominal Traits /-*.", 42"*43 "2& %&3$2*#&% 53*.( 3*-0,& 34"4&-&.43 /' '"$4 35$) "3 : 7/ *%&.4*$", '/2 4)& 42"*4 : .054 )"..&,3 5-#&2 /' 2"4)&2 4)". *. 4&2-3 /' ,*-*43 4)"4 "2& 0&2'/2-".$& 2&15*2&-&.43 TableĂ1Ć10:ăNominal Traits Ċ Signal Acquisition System Name Description ".%7*%4) &,&$4*/.3 9 ".% *(*4*9&23 5-#&2 /' 7/ *%&.4*$", %*(*4*9&% 3*-5,4".&/53,8 *(*4*9&% *43 5-#&2 /' #*431 .054 )"..&,3 5-#&2 /' 7/ *%&.4*$", $",,&% ".% .054 /50,*.
Nominal Traits TableĂ1Ć11:ăNominal Traits Ċ Time Base System Name Description +%# *-)#9 1#1,2 *-)#0 0 1, *-)#0 0 '+ 0#.2#+!# *-)#0 0 1, *-)#0 0 '+ 0#.2#+!# *-)#0 0 1, *-)#0 0 '+ 0#.2#+!# +%# #!,+"0 '3'0',+ +0 "'3 1, 0 "'3 '+ 0#.2#+!# +0 "'3 1, 0 "'3 '+ 0#.2#+!# +0 "'3 1, 0 "'3 '+ 0#.
Nominal Traits TableĂ1Ć13:ăNominal Traits Ċ Display System Name Description CRT Type 7Ćinch (17.95 cm) diagonal, magnetic deflection; horizontal rasterĆ scan; P31 green phosphor Video Display Resolution 640 pixels horizontally by 480 pixels vertically Display area is 5.04 inch (12.92 cm) horizontally by 3.78 inch (9.
Nominal Traits TableĂ1Ć16:ăNominal Traits Ċ Safety Characteristics Name Description "'&38 &13*'*$"3*/. *23&% "3&(/18 &13*'*&% / &9 1*&29 TableĂ1Ć17:ăNominal Traits Ċ Mechanical Characteristics Name Description !&*()3 3".%"1% .2314-&.3 +( ,#2 23".%9",/.& *.2314-&.3 +( ,#2 6*3) '1/.3 $/5&1 "$$&22/1*&2 ".% "$$&22/1*&2 0/4$) *.23",,&% +( ,#2 6)&. 0"$+"(&% '/1 %/-&23*$ 2)*0-&.3 "$+-/4.3 .2314-&.3 +( ,#2 '/1 3)& 1"$+-/4.
Nominal Traits Figure 1Ć1:ăTDS 310, TDS 320, and TDS 350 Dimensions TDS 310, TDS 320 & TDS 350 Service Manual 1Ć15
1Ć16
Front Panel ! " " ! "!! "!! ! ! " & % ! " ! ! " ! " # " ! ! " ! " ! ! ! % " !% % ! " ! "!! ! ! ! " ! " ! ! ! % " ! ! " ! " " ! Figure 2Ć1:ăThe TDS 320 Oscilloscope Front Panel " % ! " $ ! ! ! # ! ! % !
Front Panel Display and Power Controls The Side Menu buttons provide access to side menu selections. The ON/STBY button toggles instrument power. 2Ć2 The Main Menu buttons provide access to main menu selections. The CLEAR MENU button clears all menus from the screen.
Front Panel Vertical Controls The Vertical POSITION knob controls the vertical position of the presently selected waveform. The VERTICAL MENU button calls up the vertical operations menu. The Waveform Select buttons display and select waveforms (CH1, CH2, MATH, REF1, and REF2). A light next to a button illuminates when that waveform is selected. The VOLTS/DIV knob controls the vertical scale of the presently selected waveform. The WAVEFORM OFF button turns off the presently selected waveform.
Front Panel Horizontal Controls The Horizontal POSITION knob controls the horizontal position of all waveforms. The HORIZONTAL MENU button calls up the horizontal operations menu. The SEC/DIV knob controls the horizontal scale of the active waveforms.
Front Panel Trigger Controls The Trigger LEVEL knob controls the trigger. The TRIGGER MENU button calls up the trigger menu. The Trigger Status Lights indicate the status of the triggering system. The TRIG'D light illuminates when the instrument recognizes a valid trigger. The READY light illuminates when the instrument can accept a valid trigger and is waiting for that event to occur. The SET LEVEL TO 50% button sets the trigger level at the halfĆway point between the peaks of the trigger signal.
Front Panel Miscellaneous Controls The MEASURE button calls up the automated measurements menu. The UTILITY button calls up the utility menu. The AUTOSET button automatically sets up the instrument to produce a usable display of the input signals. The General Purpose Knob controls many side menu functions, including the cursors. The TOGGLE button switches control from cursor to cursor. The RUN/STOP button starts and stops acquisition. The HARDCOPY button starts print operations.
Front Panel Display Map The Status Readouts show trigger status (stopped, waiting for trigger, etc.) and acquisition status (mode and sampling rate or number of acquisitions). The value entered with the general purpose Trigger position (T). knob. Indicates position of vertical bar cursors in the waveform record. When the general purpose knob is first assigned, the knob icon appears here. The waveform record icon. Shows what part of the waveform record is displayed. Cursor measurement readouts.
The channel BNC inputs (CH1 and CH2) accept electrical signals for display. 2Ć8 The EXT TRIG input accepts external trigger signals.
Rear Panel # ! % & ! ! " # $ ! # # ! # ! ! " " # & ! ! ! ! $" # " "#!$ # ( ! # # ( ! ! $ " ! ! # #" ! # # # " ! # % $ ! $ "# & ! "& # & ! ! ! % " & ! " # % # ! ! $ ( ! % % ) ) $!! # # % #! " # & ! ! ! # # % ! $ $ # ! $"# # # ! $
2Ć10
Menu Maps ! ! " # ! $ ! " % ! $ ! ! ! ! TDS 310, TDS 320 & TDS 350 Service Manual 2Ć11
Menu Maps Side Menu Side Menu CH 1 CH 2 Ext Ext/10 AC Line DC AC HF Reject LF Reject Noise Reject Main Menu Pop-up Source Main Menu Pop-up Source Trigger On Type Video Scan Rate Mode Left-most main menu button Holdoff Coupling Type Edge Left-most main menu button Rising Falling Slope Level Mode Side Menu Main Menu Holdoff Set to Min Main Only Intensified Delayed Only Delayed Runs After Main Time Base Side Menu Coupling Invert Trigger Position DC AC GND Pretrigger Set to 10% Set to 50% S
Menu Maps Side Menu Side Menu Main Menu Main Menu Off H bars V bars Paired Function Style Seconds 1/seconds (Hz) Time Units Vectors Dots Vector Accumulate Dot Accumulate Intensity Readout Overall Text/Grat Waveform Contrast Graticule Side Menu Main Menu Save Current Setup Recall Saved Setup Recall Factory Setup Format Display T @ Trigger Point Full Frame To Setup1 To Setup2 . . . To Setup10 YT XY Recall Setup1 Recall Setup2 . . .
2Ć14
Theory of Operation " " # " ! " # #! ! # # " " ! # # " # " # " # " "" !( Logic Conventions " $ ! !" # # ! $ #" & # "# ! "( " # ! " "" # !& " "# # $ # " ! " ! $" # " # % % # # ! " # % # #& % " " # "# # # ! # % % " # & "# # "# # " ( " " ! " *#!$
Theory of Operation A9 A20 Bezel Button Flex LV Power Supply J2 P2 2 Pins 10 Pins P1 J40 A4 Front Panel 10 Pins J3 P3 J1 P1 2 Fan 2 Pins 13 Pins J35 4 Pins 13 Cal Sig J84 5 Pins Not Used 2 A1 Main J702 13 Pins J30 P30 16 Pins P603 16 A26 J603 16 Pins Monitor J901 J702 8 Pins 10 Pins 8 J53 CH1 J605 A2 J52 Option J2 9 Pins J602 CH2 J606 50 Pins 50 50 Terminations J4 J51 EXT TRIG RS232 P601 25 Pins GPIB J607 J3 25 Pins CENTRONICS Figure 3Ć1:ăBlock Diagram (TD
Theory of Operation A9 A20 Bezel Button Flex J2 LV Power Supply 2 Pins P2 J4 P4 10 Pins P1 2 Pins A3 Option 14 Fan Printer Power J1 2 P3 J3 J40 A4 Front Panel 10 Pins 2 J4 6 2 Pins 2 Pins 2 Pins PWR 6 Pins J3 P1 J1 J2 13 Pins 9 Pins VGA J35 4 Pins 13 Cal Sig J84 5 Pins Not Used 2 A1 Main J702 13 Pins J30 16 Pins P30 P603 16 J603 16 Pins J703 A26 Monitor 6 Pins J901 J701 8 Pins 10 Pins 8 J53 CH1 J605 A2 J52 J601 CH2 J606 50 Pins P601 50 Option 14 Commun
Theory of Operation A1 Main Board ( # ! #) '( ) $( !!$( $% ) '$* %'$ $## ) )$ $# ) # $ ' Attenuators / ' * )'. # ) )) #* )$' ( ! )( ) #%*) $*%! # # )) #* ) $# )$' %'$ (($' (.() " $#)'$!( ) )) #* )$'( , ) ( ' ! #) ' ( , !! ( ) '$* +$!) # ( , ) ) *! )$' # $ ' (( " !. $#) #( ),$ )) #* )$' . ' ( ( - ' ! . ' + '( # ),$ %'$ $## )$'( )) #* )$' .
Theory of Operation !), &&1%2 !), &&1%2 %0)!* 22%,3!2-0 22%,3!2-0 .2)-, -!0$1 !+.*%0 0)4%0 !#3*!2-0 31 +.*)&)%0 !+.*%0 +.*)&)%0 3&&%0 +. )+% !1% -,20-**%0 )+% ,2%0.-*!2-0 0-"% -$),' 62%0,!* 0)''%0 ,!*-' 0)''%0 0)''%0 -')# 62 0)' #/3)1)2)-, %+-07 )1.*!7 ),% Figure 3Ć3:ăAcquisition System Block Diagram Sampler Driver 9 ; (% -32.32 -& 2(% !22%,3!2-0 $0)4%1 2(% 1!+.
Theory of Operation Time Base Controller (TBC) 8 : &# 1'*# 0# !,+1/,))#/ -/,3'"#0 1&# &,/'7,+1 ) !.2'0'1',+ !,+1/,) $,/ 1&# ,0!')),0!,-# 1 !,2+10 -/#1/'%%#/ +" -,011/'%%#/ 0 *-)#0 +" 4/'1#0 " 1 -,'+10 '+1, !.2'0'1',+ *#*,/6 /,%/ **'+% +" !,+1/,) ,$ 1&# 0 *-)#/ '0 1&/,2%& 1&# !!#00 1, !.2'0'1',+ *#*,/6 '0 )0, 1&/,2%& 1&# &# ,-#/ 1#0 '+ 1&/## 0'! !.2'0'1',+ *,"#0 H + Fast *,"# 1&# 0 *-)#/ !.
Theory of Operation The trigger event initiates the charging ramp. The next occurrence of the system clock disconnects the charging current, initiating the discharging ramp. The baseline regulator circuit maintains the voltage at the collector of Q307 at 0 V while waiting for a trigger. When this node is at 0 V, the COUNTSTOP signal, at the output of U304A, is low. When U308B detects a trigger event at its input it sets ~RSTM to the true" state, which begins the fast ramp.
Theory of Operation Trigger Logic A1Ă 3 Ċ Trigger logic is the digital part of the trigger system. It is composed of discrete positive referenced ECL logic. Trigger logic performs the following functions. H It selects the trigger event. The CPU serially selects analog trigger (TRIG_GATE), field 1, field 2 (TV_FIELDS), any field (ANY_FIELD), or lines (CSYNC). The different modes are dependent on trigger related frontĆpanel settings.
Theory of Operation Display System A1Ă 7 A display controller IC processes text and waveforms. The display system sends the text and waveform information to the monitor assembly as a video signal. The display system also generates vertical (VSYNC) and horizontal (HSYNC) sync signals for the monitor assembly. The display circuit's primary function is writing waveforms into waveform planes. The circuitry provides Vector, Dot, Vector Accumulate, Dot Accumulate, XY, and YT display modes.
Theory of Operation The GPIB circuitry is composed of GPIB controller U8, with transceivers U9 and U10 buffering signals to and from the GPIB on the option board. Refer to schematic A2Ă 2 . The RSĆ232 portion of the board connects to the rear panel through port J2. Signals travel from the processor board through the J1 connector to the U4 dual asynchronous receiver/transmitter (DUART). The DUART sends data to the U5 driver/receiver.
Theory of Operation %."" +*0.+( (&*"/ 0+ )1(0&,("4"./ *! /"(" 0 0%" ,+0 &*,10 +. 3&,". 2+(0 $" 0+ " ." ! %" * (+$ 2+(0 $" 0 0%" 3&,". +# 0%" ,+0 /"(" 0"! &/ ,,(&"! 0+ 0%" #.+*08, *"( ,.+ "//+. %&/ 2+(0 $" &/ !&$&0&6"! *! 0%" )+1*0 *! !&." 0&+* +# % *$" #.+) 0%" ,."2&+1/(5 /0+."! 2 (1" &/ ( 1( 0"! %" % *$" &*#+.) 0&+* &/ /"*0 0+ 0%" %" #.+*08, *"( ,.+ "//+. $"*". 0"/ %" %&$% ("2"( &/ ,,.+4&) 0"(5 *! 0%" (+3 ("2"( &/ 0 $.+1*! Switches 7 %" #.
Theory of Operation '$ $/1(" * -)$ (,#(,& /(3$/ ./-3(#$0 1'$ 0" , "2//$,1 / +. %-/ 1'$ 3$/1(" * %($*# #$%*$"1(-, "-(* 3$/1(" * 05," 0(&, * ,$& 1(3$ .2*0$ 1 1'$ #$%*$"1(-, / 1$ " 20$0 1'$ / +. 1- 7/$1/ "$ 1- 1'$ 1-. -% 1'$ 0"/$$, * /&$ .2*0$ (0 &$,$/ 1$# #2/(,& 3$/1(" * /$1/ "$ .-/1(-, -% 1'(0 0(&, * #/(3$0 1'$ &/(# +-/$ ,$& 1(3$ 1' , ,-/+ * #2/(,& 1'$ /$1/ "$ .$/(-# '(0 )$$.0 /$1/ "$ *(,$0 !* ,)$# $3$, 4'$, 1'$ ! ")&/-2,# (0 3(0(!*$ '$ (#$- +.*(%($/ +.*(%($0 1'$ (,.
Performance Verification ) &(% +( ) , ( / * %) ""%) %& & $ $ %$ - * /%+ - $* *% %#&" ) /%+ # / %$"/ $ *% & ( %(# - % * ) &(% +( ) H % ( & "/ %$ (# * * * ) %) ""%) %& +$ * %$) +)* % * &(% 1 +( ) +$ ( Self Tests - $ %$ & 1 Advantages: ) &(% +( ) ( '+ ! *% % ( '+ ( $% .* ($ " '+ &# $* %( ) $ " )%+( ) $ & ( %(# .
Performance Verification H $ ! ! H FRONT PANEL BUTĆ TON PopĆUp (if necessary)Ă Main Menu Button Side Menu Button " TRIGGER MENU Type: Video #TrigĆ ger On Any Line ! ! ! Side Menu
Performance Verification Test Equipment These procedures use external, traceable signal sources to directly check instrument performance. If your test equipment does not meet the minimum requirements listed in Table 4Ć1, your test results will be invalid.
Performance Verification TDS 310, TDS 320, and TDS 350 Test Record +/0.1*$+0 $.(!) 1*"$. $*-$.!01.$ !0$ ,% !)(".!0(,+ $.0(%(#!0$ 1*"$.
Self Test ( %'$ *' *( ( #) '# ! '$*) # ( )$ + ' . ) ) ) $( !!$( $% *# ) $#( # % (( ( )( #) '# ! ( ! ) ()( # ( # ! % ) $"% #( ) $#( ) !($ $# '"( ) ) ) $( !!$( $% , ( *() %'$% '!. ) ) ) " ) , ( ! () *() $ ) () &* %" #) $' $$ *%( ' ' &* ' Equipment Required: $# Time Required: %%'$- " ) !.
Self Test First, display the CAL menu. Second, verify Pass status for the adjustment sections. Third, run a signal path compensation and verify status is Pass.
Functional Test " */,*)- ) ."#- *,) /, #- .) )( #,' ." . ." )- #&&)- )* /( .#)(*,)* ,&3 "#- *,) /, 0 ,# # - /( .#)(- ." . #- #. 0 ,# # - ." . )- #&&)- )* ./, - . ) - 0 ,# 3 ." . ." 3 )* , . 1#."#( &#'#.- " , ), 1" ( ." #(-.,/ .#)(- ." . )&&)1 && ), 3)/ .) 0 ,# 3 ." . -#!( & ** ,- )(6- , ( 5." . #- )/. #0 #0#-#)(- #( '*&#./ ), 5" - * ,#) ) )/. -#2 "),#4)(. & #0#-#)(- . ) #(. ,*, . ." +/ (.#.# - !#0 ( - &#'#.- * , .#)( 1#."#( &#'#.
Functional Test Figure 4Ć3:ăHookup for Functional Test ) ** SAVE/RECALL SETUP Recall Factory Setup OK Confirm Factory Init ) ** AUTOSET + + VOLTS/DIV +& * + - )+ # POSITION "%& +& %+ ) + . - &)$ - )+ ##/ &% * ) % + + SEC/DIV +& * " + + *(, ) 2. - ')& 2 &$' %* + &% * % # & &,+ - - * &%* % $'# +, * &% * ) % ,) 2 &% ' 2 +& #& + + ) &,+ " + + &% ' ) & & + *(, ) .
Functional Test ! " "!! Envelope ! ! ! ! " ! & % ! # % " $ # $ ! ! & % ! " "!! Average ! ! ! ! " ! & % ! # % " $ # $ ! ! " WAVEFORM OFF ! # ! % CH 2 # ! ! ! CH 2 "! ! ! ! " ! ! ! "! ! PRO
Functional Test 4Ć10 Performance Verification
Performance Tests ')& ,) * ) !% + ) )&,'!% * Signal Acquisition System Check*, Time Base System Checks, % Triggering System Checks 0 " ## + ) + )!*+! * + + '' ) !% boldface +0' ,% ) Warranted Characteristics &% ' 3 Prerequisites Signal Acquisition System Checks + *+* !% + !* *, * +!&% &$')!* % /+ %*!- - #! &% !)$ +!&% & ' ) &)$ % % ,% +!&% #!+0 . % + &##&.
Performance Tests *))! . .$! */.+/. *" '% , .%*) #!)!, .*, .$,*/#$ / '5 ) ) *))! .*, "*''*1! 3 W +,! %-%*) * 2% ' '! .* CH 1 - -$*1) %) %#/,! 5 DC Calibrator /.+/. !)-! Dual Banana to BNC Adapter Coaxial Cable Figure 4Ć4:ăHookup for DC Voltage Measurement Accuracy Check ,!-- SAVE/RECALL SETUP ! Recall Factory Setup ! OK Confirm Factory Init ,!-- ACQUIRE ! Mode ! Average 16 ,!-- MEASURE ! Select Measurement ,!-- .$! -% ! (!)/ /..*) more /).%' .
Performance Tests 0-* /%" General Purpose /+ ."/ /%" 1"-/& ( ,+.&/&+* /+ /%" ."//&*$ (&./"! &* (" 6 %" ."(&*" ("1"( )+1". +## . -""* -".. /%" ) &* )"*0 0//+* Offset ." /%" General Purpose /+ ."/ 1"-/& ( +##."/ /+ /%" ."//&*$ (&./"! &* (" 6 #+- /%" ,-"."*/ 1"-/& ( . (" ."//&*$ %" ."(&*" ("1"( -"6 ) &*. +## . -""* "/ /%" $"*"- /+- /+ /%" ("1"( *! ,+( -&/3 &*!& /"! &* ("5 6 #+- /%" 1"-/& ( . (" ,+.&/&+* *! +##."/ ."//&*$. 3+0 % 1" ) !" %" /".
Performance Tests Check Analog Bandwidth Equipment Required: )! (! %0(7"-!,0!) 4 '!1!'! .%)! 2 1! #!)!- /* /!( *)! W +-! %.%*) '! /!( ) *)! W /!-(%) /%*) /!(6 Time Required: ++-*3%( /!'4 (%)0/!. Prerequisites: See page 4Ć11. Procedure: *))! / /$-*0#$ W +-! %.%*) '! ) W /!-(%) /%*) /$! .%)! 2 1! *0/+0/ *" (! %0(7"-!,0!) 4 '!1!'! .%)! 2 1! #!)!- /*- /* CH 1 .
Performance Tests ! * * * PkĆPk ( %+* %$ ) ( $ ) ) %-$ $ +( 0 1 ) w # First, increase the reference frequency to the test frequency; then decrease the horizontal scale. Second, read the results from the readout of measurement PkĆPk. Figure 4Ć6:ăMeasuring Analog Bandwidth $ $ ) ! $ ) * * SEC/DIV ! *% * ) ) ** $ $ ) * * $ ( *%( %+*&+* ( '+ $ . ! *% ! / ( )) WAVEFORM OFF *% ( #%, $$ " (%# * )&" .
Performance Tests Time Base System Checks #$- +,* /, # &- .#*- # , . ,$-.$ - .# . , ' . .* .# $) ) ' 3 .$( - -3-. ( ) , '$-. - # & /) , Warranted Characteristics $) .# Specifications - .$*). Check LongĆTerm Sample Rate and Delay Time Accuracy Equipment Required: ) .$( 5( ,& , " ) , .*, . ( *) +, $-$*) * 2$ ' ' . ( ) *) W . ,($) .$*) . ( Time Required: ++,*2$( . '3 ($)/. - Prerequisites: See page 4Ć11. Procedure: *)) . .
Performance Tests . .# SEC/DIV )! .# D & 3 .$' - .) (- NOTE When you change the SEC/DIV in step 10, the delay time readout changes to 10.00001 or 9.99999. This is normal and has no effect on the verification # % .# . .# ,$-$(" " )! .# ' ,% , ,)-- - .# (. , #),$4)(. & ", .$ /& &$( . *)$(. 1$.#$( 5 $0$-$)(- )! (. , ", .$ /& $- )(( . .# . -. #))%/* Delta Time Measurement Accuracy &. .$' ' -/, ' (. /, 3 $- 0 ,$!$ 3 -/ --!/& )'*& .$)( )! .
Performance Tests Medium Frequency Sine Wave Generator /.*/. To Ext Trigger 36 Inch Cables 50 Termination Figure 4Ć8:ăHookup for Trigger Sensitivity Check . ." ! ( , .), , +/ ( 2 .) 3 3 ), 3 , -- MEASURE HighĆLow Setup MinĆMax , -- ." ' #( ' (/ /..)( Select Measurement , -- ." -# ' (/ /..)( -more- /(.#& Amplitude ** ,- #( ." -# ' (/ , -- ." -# ' (/ /..)( Amplitude , -- SET LEVEL TO 50% . ." .
Performance Tests First, set a signal with an amplitude at the minimum trigger sensitivity. Second, check for a stable trigger at both the positive and negative slope settings.
4Ć20
Adjustment '(1 1$"2(.- ".-2 (-1 (-%.0, 2(.- 7.3 -$$# 2. #)312 2'$ -# '$0$ 0$ .-+7 2'0$$ 27/$1 .% #)312,$-21 7.3 " - /$0%.0, .2'$ .1"(++.1"./$ 2'$ 32., 2$# -# 1$,( 32., 2$# #)312,$-21 (- 2'$ 1712$, " +(!0 2(.- ,$-3 22$-3 2.0 #)312,$-21 -# ,.-(2.0 #)312,$-21 .3 1'.3+# /$0%.0, 2'$ 1(&- + / 2' ".,/$-1 2(.- #)312,$-2 %2$0 1$04("(-& 7.30 (-1203,$-2 .0 ,.4(-& 7.30 (-1203,$-2 2. -$5 ./$0 2(-& $-4(0.-,$-2 8 _ 2$,/$0 230$ "' -&$ '$ .2'$0 #)312,$-2 /0.
Adjustment The System Calibration Menu %( !""%( %& ( %*' %$ % ' "! ' )!%$ '%*)!$ ( %* $ (( ) ( '%*)!$ ( ) '%* ) (.() # "! ' )!%$ # $* ( ) %""%,!$ &'% *' NOTE Except for early TDS 320 oscilloscopes, the Voltage, Timing, and External Trigger calibration routines are disabled at the factory. To enable the calibration menus, see $ "!$ "! ' )!%$ $*( on page 6Ć35.
Adjustment ."// UTILITY ."// 0%" * &+ *"+1 100,+ Signal Path " ! 0%" ,+5/ .""+ 0"40 "#,." ,+0&+1&+$ ."// 0%" /&!" *"+1 100,+ OK Compensate Signal Paths &0 %" /&$+ ) - 0% ,*-"+/ 0&,+ .,10&+" 0 ("/ ,10 #,1. *&+10"/ 0, .1+ ,2" 0%" %,,(1- 0, 0%" EXT TRIG &+-10 ."// UTILITY ."// 0%" * &+ *"+1 100,+ Ext Trig " ! 0%" ,+5/ .""+ 0"40 "#,." ,+0&+1&+$ ."// 0%" /&!" *"+1 100,+ OK Calibrate External Trig ,)),3 0%" &+/0.1 0&,+/ ,+ 0%" / .
Adjustment Figure 5Ć2:ăTiming Compensation Waveform ) ** UTILITY ) ** + $ !% $ %, ,++&% Timing + &%1* ) % + /+ &) &%+!%,!% ) ** + *! $ %, ,++&% OK Compensate Timing &##&. + !%*+), +!&%* &% + * ) % Attenuator Adjustment * + !* ')& ,) +& ",*+ + #&.1 ) (, % 0 &$' %* +!&% & + %% # % %% # ++ %, +&)* &, * &,# ' ) &)$ + !* ')& ,) ! 0&,) &* !##&* &' $&%*+) + * )&** )&,% !% &) &- )* &&+ & *(, ) 1.
Adjustment !/ /$! (% - /%+* #!*!- /+- /+ +0/,0/ $%#$ ),(%/0 ! ' 4 .%#* ( !/ /$! ,0(.! ),(%/0 ! /+ !/ /$! +. %((+. +,! VOLTS/DIV /+ ) /$! SEC/DIV /+ m. * &0./ /$! ,0(.! ),(%/0 ! "+- "%1! %1%.%+* %.,( 3 -!.. SET LEVEL TO 50% .! /$! 1!-/% ( POSITION +*/-+( /+ ,( ! /$! /+, +" /$! 2 1!"+-) *! !*/!- . -!!* !/ /$! VOLTS/DIV /+ ) .! * &0./)!*/ /++( /!) /+ &0./ /$! , %/+- "+- /$! "( //!./ -!.,+*.
Adjustment +2! 0$! + 4% ( (! 0+ 0$! CH 2 %*,10 .!%*/0 ((%*# 0$! W 0!.)%* 0%+* !,! 0 /0!,/ 0$.+1#$ "+. $ **!( !%*/0 (( 0$! %*/0.1)!*0 %*!0 Monitor Adjustments $!.! .! *+ /!0 ,!."+.) * ! .!-1%.!)!*0/ "+. 0$! )+*%0+. +1 ) 5 1/! 0$%/ ,.+ ! 1.! 0+ $ *#! )+*%0+. , . )!0!./ 3$!*!2!. 0$! .%#$0*!// +*0. /0 $+.%6+*0 ( ,+/%0%+* +. 2!.0% ( ,+/%0%+* +" 0$! %/,( 5 %/ *+0 0+ 5+1. (%'%*# !)+2! 0$! %*/0.1)!*0 %*!0 / !/ .% ! %* 0$! .!)+2 ( ,.+ ! 1.
Adjustment just beyond the point ! NOTE The higher the contrast, the higher the likelihood that prolonged use will cause CRT burnĆin.
5Ć8
Inspection and Cleaning Inspection and Cleaning , +" , !(0 -( "',) - (+ "+- ' & (' ' !(0 -( % ' -! 1- +"(+ ' "'- +"(+ ( -! (, "%%(, () (. ,!(.% ) + (+& "',) -"(' ' % '"' , )+ / '-"/ & "'- ' ' + / '-"/ & "'- ' ' 0! ' (' + .% +%2 & 2 )+ / '- (, "%%(, () & % .' -"(' ' '! ' "-, + %" "%"-2 + / '-"/ & "'- ' ' (',",-, ( /",. %%2 "',) -"' ' % '"' -! (, "%%(, () ' .
Inspection and Cleaning % $ " ! " # # % ! ! & ! ("$! % !( ! # "# # ! # $" (% #' ! "" ! & $"# ! $ " General Care # " $"# $# # " " # " ! ( # #" "'"# # " $ ! ' & ! # # " " # " " ! # % ! ! # #" # ! # " ' ! $"# "# #
Inspection and Cleaning TableĂ6Ć1:ăExternal Inspection Check List Item Inspect For Repair Action % #! % " !' # # $ $ # % $ !# % ! $ * # ( # !# $ %$ % ' ! & #! %*" ! $ $$ !# !!$ ! $ " # !# # " $$ !# % ' ! $ ! #! $ $ # $& % ! !# ! % %$ #% ! %!#$ % ' ! & $ # !# ( $ !&% #% ##) % % !## % !" # % ! % ' ! &
Inspection and Cleaning CAUTION To prevent damage from electrical arcing, ensure that circuit boards and components are dry before applying power to the oscilĆ loscope.
Inspection and Cleaning "# ) ( $ #%) " #%$ ( % % $!"#!") ! ! ( % $ ! $ !# % !# %) ! % ! ! %! ' "!# % $ !% _ %! _ !# _ %! _ ! * ( % # %! % !#!& ) # $ % #) " #%$ ( % !(+"# $$&# ! * # #) ! "! %$ $$ $ !' !# #) ! " #% % &$ !(+% " # %&# _ %! _ !# _ %! _ # & %+ # TDS 310, TDS 320 & TDS 350 Service Manual 6Ć5
6Ć6
Removal and Replacement ! ! " # ! ! ! " Preparation Ċ Please Read WARNING To avoid injury or death, disconnect the power cord from the line voltage source before performing any procedure in this section. General Instructions READ THESE GENERAL INSTRUCTIONS BEFORE REMOVING A MODULE.
Removal and Replacement Figure 6Ć1:ăOscilloscope Orientation Equipment Required " $ ! ! TableĂ6Ć3:ăTools Required for Module Removal 6Ć8 Item No.
Removal and Replacement TableĂ6Ć3:ăTools Required for Module Removal (Cont.) Item No. Name Description 43 %1*5&1 *.$) 2&% '/1 1&-/5*.( &"13) (1/4.% $"#,&2 43 %1*5&1 *.$) 2&% '/1 1&-/5*.( $/..&$3/1 2)&,, ".% ("2+&3 .(,&:3*0 36&&9&12 ,*0: "6 ,*&12 !//%&. 04%(&1 1/.3 /5&1 )*2 /03*/.", "$$&22/18 01/3&$32 3)& '1/.3 /' 3)& /2$*,,/2$/0& 6)&. 0/2*: 3*/.&% '"$& %/6. *. 3)& 1&-/5", 01/$&%41&2 ,/5&2 ,*.3 '1&& $,/3) 2&% '/1 1&-/5*.( 3)& -&.
Removal and Replacement (1) Unplug (2) Rotate (3) Pull Figure 6Ć2:ăLine Cord Removal # ! # ! ! % ! $! ) & ! % # ) ! ! # ( !"# $ $ # ! ! #" ! ) # '# ! " # # ! # ! # ! # # # ! " $ # !) & " $ # ! & ( # # # ! % # $" ! & ! # # % # $ # ! ! & !( # ! & ! & # "
Removal and Replacement Fuse Figure 6Ć3:ăLine Fuse Removal Reinstallation: ! # ' #$ $% "$ % #!& %! # $% % &$ % % !# Front Panel Knobs and Shafts ' ) " # ! +% " %( * #$ % % % !$ !$ !" $! %$ !%%! $ !( ! % (!# $&# %$ #! % $ )!& # %! &# + # $" ) ! )!& ( $ %! # !' "& % $%# % !&% #! % #! % " $ % ) %! # % $! # %( % $ ! % ! %
Removal and Replacement When reinstalling the knobs, note there are two sizes. Be sure to reinstall the proper size knob in the proper location.
Removal and Replacement Rear Cover, Cabinet, and Cabinet Handle / # ( 2 , + 0 +$/ + 0$-# ,$3 4 )+1R -$* - ', ( .&& ).- )( )-# )! -# #. , )( -# $( - # ( & -) .(&) % $- !)+ *),$4 -$)($(" #$& #)& $(" -# #. , .(&) % +)- - -# # ( & -)0 + , -# )--)' )! -# ), $&&), )* - -# ), $&&), )* ,) $-, ! $, )0( 0$-# $-, !+)(- )/ + )( -# 0)+% ,.+! ( $-, )--)' ! $(" 2). ! + ( $".+ 4 )( * " 4 , 2). ) -# !)&&)0$(" ,- *, ')/ -# !).+ 4 )+1R , + 0, , .
Removal and Replacement Mounting Screws (4) EMI Gasket: Access from the front of cabinet. Handle Assembly: Remove the internal screws and pull out handle hubs to remove. Front Foot: Rotate and remove.
Removal and Replacement Trim Ring, Menu Elastomer, Menu Buttons, and Front EMI Gaskets 0! $ ) 3 1** !) -+/ #!, .!( !. .$! *- %''*- *+! -* %.- ,! , %- *1) *) .$! 1*,& -/," ! ) %. *..*( %- " %)# 3*/ .*/ $ .$! , *) *). . +*%).- *) .$! (!)/ !' -.*(!, %)-. ''! %) .$! .,%( ,%)# '-* * )*. .*/ $ .$! *). .- *) .$! (!)/ /..*) "'!2 %, /%. !2+*-! 1$!) 3*/ ,!(*0! .$! .,%( ,%)# */ -$*/' 1! , '! ) '*.$ #'*0!- .$ . ,! ",!! *" '%). 1$!) $ ) '%)# .$! (!)/ !' -.*(!, *, 1$!) .
Removal and Replacement $ #% &%%! %! %$ ! % %# # % & $%! # !' # % & &%%! ! $ % %# # "# $$ % %! $% '! %!& % # ! ! % % "! %$ ! % $%! # ( $% % !&% $% % $ %$ % %# # %! % #! % ! % $$ $ "&$ % ! %! $ % $&# % % !% " #$ ! ) ! $ ! " # % % $ %!" !%%! ! % %# # $ " !' # % ! % $$ $
Removal and Replacement Front Panel Assembly and Menu Flex Circuit % #%! ' $% ) #(& $%# (% '# % !#) ' '% ! % " ) " , '- & % * % ) % ' ! ' ' #& #& #$ &# '& #''#! & #*" #" ' *#% &(% " '& %#"' & " ,#( "& %' '- & % * % ) % "'# ' & #' ' ' %#"'-% ' # ' && & & (% - (& "* % & '# % & ' &" $ # ' ' % ' & ' ' %#"' $ " && ! , #(' # ' %#"' # ' ! " && & ("' ,#( "
# 4+0 -" -")+1&*$ /%" )"*0 #("3 &- 0&/ ,0(( /%" &- 0&/ 2 4 #-+) /%" #-+*/ +# /%" ) &* % ..&. # 4+0 !+ *+/ *""! /+ ,"-#+-) +),+*"*/7("1"( ."-1& " +* /%" #-+*/7, *"( ..") (4 .'&, /+ ./", #+- -"&*./ (( /&+* &*./-0 /&+*. ")+1" /%" #-+*/7, *"( +*/-+( '*+ . #-+) /%" #-+*/7, *"( ..") (4 0.&*$ /%" )"/%+! !". -& "! &* FrontĆPanel Knobs and Shafts +* , $" 7 "(" ." /%" /%-"" .* , (+ '. / /%" "!$" +# /%" &- 0&/ + -! /%"* /&(/ /%" + -! 2 4 #-+) /%" ..
Removal and Replacement FrontĆPanel Board Menu Button Elastomer ESD Shield Press Latch to Release See View A Knobs and Shafts Flex latches (3) downward to release board. Then, rotate board and pull down.
Removal and Replacement Main Board Assembly - ! & 0 * ) . )"- ) ."+! *"1 3 ')/R +"( + %* & .) & ! + %2 "/+,) + %2 & *'$ )"& ")'& + %2 %'- +! )'&+ +)"% )"& * ',+$"& '& ( 3 + +! '* "$$'* '( *' "+* +'( *" "* '.& '& +! .')# *,) & "+* )'&+ "* "& 0', () * &+ ,&($, +! '(+"'& ' ) $ * &($, +! ('.
Removal and Replacement Main Board Mounting Screws (4) Mounting Screws (4) Figure 6Ć10:ăMain Board Removal # , ," & #' ( * ++ & %0 / 0 *(& ," (+ #%%(+ () ,( (&)% , #,+ * &(.
Removal and Replacement # # ' ! & ' ! # ! # # #" ! % ' $ # ! % ! ! # & "$ !#" " ! # & ! # # # ! $ # ! # ! # # ! ! % # $# & " ! $" # &! # $ # ! # ! # # ! Wrench A01 Main Board Attenuator Frame TwistĆLock Tab BNC Attenuator Hybrid Alignment Tool Attenuator Shield Figure 6Ć11:ăBNC and Hybrid Removal
Removal and Replacement # +!)+' -# !)&&)0$(" ,. * +-, $! 2). + ')/ H +)' -# % )! -# ) + &)), ( -# (.- )! # .,$(" -# 0+ ( # H )), &2 $(,- && -# ( 0 0 ,# + ( (.- H & -# &$"(' (- !$1-.+ )/ + && !).+ , H $"#- ( -# (.-, )! && !).+ , .,$(" -# 0+ ( # H ')/ -# &$"(' (- !$1-.+ H ,)& + -# 0$+ -) -# (- + )( . -)+ )! -# +!)+' $( + / +, )+ + ,. * +-, -#+).
WARNING To avoid injury or death, do not unplug the anode from the monitor when removing or replacing the monitor module. !#) ' ' % . #%+- & % *& & (% " ' !#" '#% && ! , '# ' '#$ # ' && & (% .
Removal and Replacement Monitor Assembly Trim Ring Mounting Screws (6) Figure 6Ć12:ăMonitor Assembly Removal TDS 310, TDS 320 & TDS 350 Service Manual 6Ć25
Removal and Replacement Power Supply Assembly ) " , & % * % ) % * ' & - .
Removal and Replacement Figure 6Ć13:ăLow Voltage Power Supply Removal TDS 310, TDS 320 & TDS 350 Service Manual 6Ć27
Removal and Replacement Option 14 Assembly 3$ ' ,#6 0"/$4#/(3$/ 4(1' (,"' ,21 #/(3$/ 1$+ 0(7$ 8 -/5R 1(. 1$+0 ,# ,# $1 1'$ -0"(**-0"-.$ 0- (10 1-. (0 #-4, -, 1'$ 4-/) 02/% "$ 4(1' (10 %/-,1 % "(,& 1-4 /#0 6-2 (0"-,,$"1 1'$ + (, !- /# "-++2,(" 1(-,0 " !*$ at the main board $+-3$ 1'$ " !*$ %/-+ (10 " !*$ "* +. 0$$ (&2/$ 8 NOTE Early versions of this option did not use the video cable, power cable, or the screws at the rear of the chassis.
Removal and Replacement J2 Figure 6Ć14:ăOption 14 Disassembly TDS 310, TDS 320 & TDS 350 Service Manual 6Ć29
Removal and Replacement Tied cables if not used Chassis Top Communications Cable Tied Cables Option Board Power Cable To Option Communications To Cable Acquisition Board Cable Clamp Video Cable Chassis Bottom Bottom of Oscilloscope Figure 6Ć15:ăOption 14 Assembly Removal Fan and Fan Mount " " $ ! ! fan " Power Supply " # ! ! ,
Removal and Replacement &'% *$" (( ( '+ $ '%! $ $ #%*$) %' ' #%+ $ ) ) #%*$) %' " $ $ %) ) ) %( ""%( %& (% ) ( ) ) %*( ( ) $ mount ( $ *&, ' ( Lift flex locks. Fan Releasing the Fan Mount Lugs Left Rear of Scope Move fan mount inward and lift. Fan Mount Press flex locks. Retainer Lugs (4) Figure 6Ć16:ăFan and Fan Mount Removal &' (( ) ),% " - "% !( )% ' " ( ) # ( *' .
6Ć32
Troubleshooting ! $ ! ! $ ! $ ! ! ! Removal and Replacement ! $ NOTE These procedures will isolate a fault to the module level. If you wish to isolate a faulty component, use the theory of operation, schematĆ ics, board dollies, and grid locator charts provided elsewhere in this manual.
Troubleshooting Figure 6Ć17:ăThe Diagnostics Menu % && ' ! " ! "( (''#" Loop ' #" # ' # #) " #$' #"& %#! ' & ! "( H % && Once '# %(" ' ' &'& #" H % && Always '# %(" ' ' &'& #"' "(#(& * ("' *#( * ' $#)+ % H % && Until Fail '# %(" ' ' &'& #"' "(#(& * ("' ' "&'%(! "' & ' &' #% ("' *#( * ' $#) % % && ' ! " ! "( (''#" Execute $% && ' & ! "( (''#" Ok Confirm Run Test ' "#&' & ) ' #(' ')# ! "(' & '# #!
Troubleshooting ' (( ) ( # $* *))%$ Display Log )% (&" . ) $%() ( ''%' "% ''%' "% %$) $( (*## '. ) ) ' %+ ' ) " % ) %( ""%( %& $ ( ' &) %$( % ) " () ''%'( $ %*$) ' ( *' / " () ''%' $ ) " () ( ) #%() ' $) $ %' #%() #&%') $) ' %' ) ( $ %'# ) %$ $ %$) $* %$ )% ) TroubleshootĆ ing Procedure $ ) $ -) ( ) %$ )% + ' . ) "*' $ & $&% $) ) *").
Troubleshooting "( ' # $ $" & ! " $ % '$ + ( & ' # $ & $ $ & "! ! &" #$"& & & $ & "! % && ! % $ !%& & ' # $ Reinstallation: $ "$ ! $ ( $% "$ $ %& #% ! $ ( $% ! & $ "( !%&$' & "!% ! %' %& # Cal Jumper J609 Main Board Figure 6Ć19:ăMain Board Cal Jumper Troubleshooting Procedure '$ % + & $"' + $ ") $&% " & &$"' % ""& ! #$" '$ % & &" ( $ * " ' '$ % ! & * & "! " $
Troubleshooting )' ( ON/STBY )(($# ($ ( $# %$' ( $# # +$) & ( # * &! # $ ' $## ( %$* & $& ( ( !! ( ! ' $" # &$" ( $* & )%%!+ "$ )! # ( ! # (* # ( "$ )! ' & ' )& !+ (( & $&" ( $* & )%%!+ (&$) ! ' $$( # %&$ )& )& , ' # ( ' $% %$* &' $# $ ( &$#( % # ! ! (' $" $# # ( # $ $ ' $&( ( " ! ( & $ & $&" ( &$#( # ! &$ ''$& (&$) ! ' $$( # %&$ )& )& , ' ' ( '%! + &
Troubleshooting "#+ )*( -* ++-& + ," , ," (+ #%%(+ () #+ -) ' *-''#'! ' /( ' * ," #+)% / ( + ," **(* (! * )(*, '/ **(*+ ( % , ," .
Troubleshooting ) * !) '(& +( *& * ($!% ! '(& # $ !) +) . * (&%* % # $& +# &( * !% & ( ( )) * ON/STBY +**&% *& * &% '&)!*!&% ) * ON/STBY +**&% ,&("!% &(( *#. ) * / # # - !( +!* ) +( #. !%)* ## !% % !) * # - !( +!* ) +( #. $&+%* &% ))!) & ) & +( #.
Troubleshooting , -#$, *+) .+ -) -+). & ,#))- $,*& 1 *+) & ', , -# $,*& 1 & "$ & .- -# #)+$2)(- & ( )+ / +-$ & $,*& 1 (),- & ) , *$( )! # / ,$"( & ,$'$& + -) $".+ 3 4 , ) , *$( )! , *& -# )($-)+ ') .& ) , ) , *$( )! # / ,$"( & 0$-# -# , ' & / &, , $".+ 4 , )0 + )!! -# ), $&&), )* ( $, )(( - -# & !+)' )( -# )($-)+ ') .& .+( -# *)0 + % )( ) ) , *$( )! )( -# ') .
Troubleshooting Figure 6Ć24:ăJ901 Pin 7 Signal Figure 6Ć25:ăJ901 Pin 2 Signal TDS 310, TDS 320 & TDS 350 Service Manual 6Ć41
Troubleshooting Figure 6Ć26:ăJ901 Pin 5 Signal 6Ć42 Maintenance
Troubleshooting ." /%&. ,-+ "!0-" /+ !"/"-)&*" &# ,-+ (") &. 0."! 3 /%" +2 +(/ $" +2"- 0,,(3 -".. /%" ON/STBY 0//+* #"2 /&)". *! (&./"* #+- -"( 3 (& '&*$ .+0*! + 3+0 %" - /%" (& '&*$ + . /%" #0." (+2* ". ",( " #0." +". #0." (+2 $ &* + ". +". /%" +. &((+. +," ,+2"- 0, *! -" /%" ." +*! -3 1+(/ $". ("4 5 +' ". + +". +. &((+. +," 2+-' ". ". ")+1" (" #-+) +* /%" )+!0(" %" )+!0(" &. +' .
Troubleshooting TableĂ6Ć4:ăPower Supply Secondary Voltages 6Ć44 Location (See Figure 6Ć28) Minimum Maximum ! " ! " Maintenance
Troubleshooting J3 To Fan Top of Instrument J4 To Option 14 (If Used) J2 To Monitor Front of Instrument J1 To Main Board Bottom of Instrument Figure 6Ć28:ăPower Supply Connector Locations TDS 310, TDS 320 & TDS 350 Service Manual 6Ć45
Troubleshooting # $ # !" %" $ $" % # $ %!! ( & " !" WARNING Turn the oscilloscope off before disconnecting a cable.
Troubleshooting -" .%&- +,* "!/," .* !".",(&)" &# +,* '"( & /-"! 3 .%" &) * ,! *, .%" +.&*) *!/'" *))" . .%" +,&).", +*1", '" .* .%" +,&).", +*1", *))" .*, .%" 0*'. $" . .%" ")! *# .%" *))" .*, * *))" .*, -" /,"! .* .%" +*1", -/++'3 "- * " /," .%" *))" .*, "- *))" . +,&).", .* .%" ").,*)& - +*,. )! .%" +,&).", +*1", -*/, " ". /+ .%" .&'&.3 (")/ #*, + *,. ").,*)& - )! + *,( . .* ( . % .%" +,&).", "+' " .%" &).",# " ,"-- .
6Ć48
Repackaging Instructions -#) ' $ ( #' #' #$ $ ( " ( #& " ' $$ " &(#" " $ " ! ( & ( #& " $ " ! ( & ' "#( * $ ( "'(&)! "( ' # #+' ( " #&&) ( & # & ' $$ " &(#" + ( "' ! "' #"' ( '( . ! .
6Ć50
Options and Accessories *+3 3'%4+0/ &'3%2+$'3 4*' 6#2+053 014+0/3 #3 7'-- #3 4*' 34#/& #/& 014+0/#- #%%'3302+'3 4*#4 #2' #6#+-#$-' (02 4*' #/& Options 14+0/3 +/%-5&' 4*' (0--07+/) Option 14: I/O Interfaces *+3 014+0/ +/%-5&'3 ; #/& '/420/+%3 +/4'2(#%'3 ! 6+&'0 054154 #/& 107'2 (02 4*' 14+0/ 12+/4'2 4 #-30 +/%-5&'3 4*' TDS 310, 320 & 350 Programmer Manual "05 %#/ %0//'%4 # 2'.
Options and Accessories TableĂ7Ć2:ăInternational Power Cords (Cont.) Option Power Cord (+-" & +# ' 5 3 0#-3 +% ' 5 3 Option 1K: K212 Scope Cart #-" -"#, ()-#(' -" (, #%%(, () (& , 0#-" (+- % ',-+.& ' +- Option 3P: Thermal Printer (Includes Option 14) " #',-+.& '- (& , 0#-" -" +& % )+#'- + ('' - -( -" '-+('# , )(+- %,( #' %. + ++2#'! )(. " -" - ,- ', -( -" -() ( -" (, #%%(, () ' )+#'- + #',-+.
Options and Accessories Standard Accessories The standard accessories listed in Table 7Ć3 come with the TDS 310, TDS 320, and TDS 350. TableĂ7Ć3:ăStandard Accessories Accessory Reference Instruction Manual XYZs of Analog and Digital Oscilloscopes U.S. Power Cord Probes (quantity two) P6109B 10X Passive (TDS 310 and TDS 320) Probes (quantity two) P6111B 10X Passive (TDS 350) Optional Accessories You can order the optional accessories listed in Table 7Ć4.
Options and Accessories Accessory Probes Accessory Cables These are other types of probes you can use with the TDS 310, TDS 320, and TDS 350. You can order thefollowing probes separately: H P6101B 1X Passive Probe H P6129B Switchable 1X-10X Passive Probe (not recommended for the TDS 350) H P6408 TTL Logic Probe H P6009 High Voltage Probe H AM503S DC/AC Current Probe System H P6561 SMT Probe Table 7Ć5 lists cables you can use with the TDS 310, TDS 320, and TDS 350.
Replaceable Electrical Parts Parts Ordering Information " % " #%$ # ' #! !# % #!& *!&# ! %#! ) !# # "# $ % % ' !# # " #%$ & % ! !( !# % ! *!&# !# # " #% & # $%#& % %*" !# & # $ # & # ! % ! & # "" " #% *!& ' !# # $ # " ( % ( !# "#!' " #% *!&# ! %#! ) !# # "# $ % % ' ( ! % % *!& ! # * " #% & #
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Replaceable Electrical Parts CROSS INDEX - MFR. CODE NUMBER TO MANUFACTURER Mfr.
Replaceable Electrical Parts CROSS INDEX - MFR. CODE NUMBER TO MANUFACTURER Mfr.
Replaceable Electrical Parts Component Number Tektronix Part No. Serial No.
Replaceable Electrical Parts Component Number Tektronix Part No. 8Ć6 Serial No. Effective Dscont Name & Description Mfr.
Replaceable Electrical Parts Component Number Tektronix Part No. Serial No.
Replaceable Electrical Parts Component Number Tektronix Part No.
Replaceable Electrical Parts Component Number Tektronix Part No. Serial No. Effective Dscont Name & Description Mfr.
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Replaceable Electrical Parts Component Number Tektronix Part No. Serial No.
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Replaceable Electrical Parts Component Number Tektronix Part No. Serial No.
Replaceable Electrical Parts Component Number Tektronix Part No. Serial No. Effective Dscont Name & Description Mfr.
Replaceable Electrical Parts Component Number Tektronix Part No. # # Serial No. Effective Dscont Name & Description Mfr.
Replaceable Electrical Parts Component Number Tektronix Part No. Serial No.
Replaceable Electrical Parts Component Number Tektronix Part No. 8Ć30 Serial No. Effective Dscont Mfr. Code Name & Description ! " " ! " " ! " " ! " " Mfr. Part No.
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Diagrams and Circuit Board Illustrations This section contains circuit board illustrations, component locator tables, waveform illustrations, and schematic diagrams for this oscilloscope. Symbols Graphic symbols and class designation letters are based on ANSI Standard Y32.2Ć1975. Abbreviations are based on ANSI Y1.1Ć1972. Logic symbology is based on ANSI/IEEE Std 91Ć1984 in terms of positive logic. Logic symbols depict the logic function performed and can differ from the manufacturer's data.
Diagrams and Circuit Board Illustrations Locator Grid Power Termination Component on back of board Function Block Title Board Outline Internal Screw Adjustment Refer to Waveform Assembly Number Strap Panel Control Onboard Jumper Digital Ground Male Coaxial Connector Refer to Assembly & Diagram Number Female Coaxial Connector Off board Connector Heat Sink Active Low Signal Signal From Another Diagram, Same Board Assembly Number & Board Name Decoupled Voltage Diagram Number Asse
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Replaceable Mechanical Parts CROSS INDEX - MFR. CODE NUMBER TO MANUFACTURER Mfr.
Replaceable Mechanical Parts Fig. & Index No. Tektronix Part No. Serial No. Effective Dscont Qty 12345 Name & Description Mfr. Code Mfr. Part No.
Replaceable Mechanical Parts Figure 10Ć1:ăCabinet TDS 310, TDS 320 & TDS 350 Service Manual 10Ć5
Replaceable Mechanical Parts Fig. & Index No. Tektronix Part No. Serial No.
Replaceable Mechanical Parts A4 Figure 10Ć2:ăFrontĆPanel Assembly TDS 310, TDS 320 & TDS 350 Service Manual 10Ć7
Replaceable Mechanical Parts Fig. & Index No. Tektronix Part No. Serial No. Effective Dscont Qty 12345 Name & Description & ! &( (& $# ( ' #" - & ! &( (& $# ( ' #" - & ! &( (& $# ( ' #" - & ! &( (& $# ( ' #" - Mfr. Code Mfr. Part No.
Replaceable Mechanical Parts A26 A20 A3 A2 A1 Figure 10Ć3:ăCRT, Power Supply, and Circuit Boards TDS 310, TDS 320 & TDS 350 Service Manual 10Ć9
Replaceable Mechanical Parts Fig. & Index No. Tektronix Part No. Serial No. Effective Dscont Mfr. Code Qty 12345 Name & Description Mfr. Part No.
Replaceable Mechanical Parts Fig. & Index No. Tektronix Part No. Serial No. Effective Dscont Mfr. Code Qty 12345 Name & Description Mfr. Part No.
Replaceable Mechanical Parts 10Ć12 Mechanical Parts List
