Tektronix 7A19 Instruction Manual Download Page 1

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Summary of Contents for 7A19

Page 1: ...Scans by ArtekMedia 2008 ...

Page 2: ...ows 1 Typed text pages are typically scanned in black and white at 300 dpi 2 Photo pages are typically scanned in gray scale mode at 600 dpi 3 Schematic diagram pages are typically scanned in black and white at 600 dpi unless the original manual had colored high lighting as is the case for some 70 s vintage Tektronix manuals if you purchased this manual from us typically through our Ebay name of A...

Page 3: ...Scans by ArtekMedia 2008 ...

Page 4: ...t Description SECTION 4 MAINTENANCE Preventive Maintenance Troubleshooting Corrective Maintenance SECTION 5 CALIBRATION Performance Check Test Equipment Required Calibration Procedure Index to Calibration Procedure SECTION 6 ELECTRICAL PARTS LlST SECTION 7 DIAGRAMS Circuit Board Illustrations Semiconductor Electrode Configurations SECTION 8 MECHANICAL PARTS LlST Exploded View Drawing Page 1 1 1 1 ...

Page 5: ...mplifier plug in Left and 7A19 with Variable delay option Right REV A AUG 1976 Scans by ArtekMedia 2008 ARTEK MEDIA Digitally signed by ARTEK MEDIA DN cn ARTEK MEDIA c US o DC Henderson Date 2008 01 31 18 36 47 06 00 ...

Page 6: ... reference mainframe dependent Upper Bandwidth AC or DC coupled 10 rnV div to 1 Vldiv Lower Bandwidth AC Coupled Maximum Input Power DC or AC coupled Voltage AC coupled lnput Impedance Resistance DC or DC GND Reflection Coefficient Time Domain Maximum lnput Current Performance Requirement 10 mVIdiv to 1 Vldiv 7 steps in a 1 2 5 sequence Within 3 with GAlN adjusted at 10 mVIdiv when driven from 50 ...

Page 7: ...ance Requirement I00 PV C or less Variable from 0 5 ns to 0 5 ns To 1 ns within k0 05 ns of dial setting Supplemental Information Deflects trace approximately 0 3 division A t least 8 divisions Less than 0 1 division Front panel switch selects UP or INVERT TABLE 1 2 TABLE 1 3 ENVIRONMENTAL CHARACTERISTICS PHYSICAL Refer to the specifications for the associated oscilloscope 7A19 option I 1 3kilogra...

Page 8: ...ects signal input coupling mode Switch AC The AC component of the signal is coupled to the amplifier input while the DC component is blocked AC GND Grounds the amplifier input while maintaining the same AC load for the input signal PRE CHG Provides a charge path for the AC coupling capacitor to pre charge the input circuit before switching the Input coupling switch to AC DC Both AC and DC componen...

Page 9: ...e kilohms in series with two microfarads Phis extends the Low Frequency response to less than 20 Hz lnput power should be limited to 118 watt in this mode The AC GND position disconnects the signal source from the amplifier and connects it to a capacitive coupled 50 ohm termination thus providing the same type of load to the signal source The input to the amplifier is also pro vided with a ground ...

Page 10: ...d the top of the waveform is within the viewing area With the time base The peak to peak voltage is 45 volts Position control move the display so one of the upper peaks lies near the center vertical line see Fig 2 1 When using a coded probe and an oscilloscope equipped with readout simply multiply the distance measured in step 6 Measure the divisions of vertical deflection peak to 6 by the deflect...

Page 11: ...ting of 0 5 V Using the formula Instan vertical VOLTS probe taneous distance X polarity X DIV X attenuation voltage divisions setting factor Substituting the given values lnslantaneous Voltage 3 6 X 1 X 0 5 V X 10 The instantaneous voltage is 18 volts Matching transit times using two 7A19 s one having VARIABLE DELAY Option 4 In some applications it is necessary to view the tirne relationship of tw...

Page 12: ...inverted signal and trigger outputs Outputs are connected to the oscilloscope via the interface connectors DETAILED CIRCUI F DESCW IPTION lnput Coupling Input signals connected to the INPUT connector can be AC coupled DC coupled or internally disconnected S5 is a cam type switch a contact closure chart showing the operation is given on the schematic in the Diagrams section When the lnput Coupling ...

Page 13: ...n inductor connected to pins 5 and 11 R38 signal balance control balances our the resultant currents in the amplifier Temp Comp control R76 sets the voltage at the emitter of 076 The current through R74 is set by the current generator 073 and Gain control R73 As the d ermal resistor R74 changes with temperature so will the voltage at the collector of Q73 therefore compensating for temper ature cha...

Page 14: ...g the 7A19 The schematic diagrams circuit descrip tion and calibration sections should be used to full advantage The circuit description section gives detailed information on circuit behavior and output requirements Troubleshooting Aids Diagrams Circuit diagrams are given on foldout pages in Section 7 The circuit number and electrical value of each component in this instrument are shown on the dia...

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Page 16: ...lacement parts from Tektronix Inc include the following information 1 Instrument Type 2 Instrument Serial Number 3 A description of the part if electrical include circuit number 4 1 EKTRONIX Part Number Soldering Techniques W A R N I N G Disconnect the instrument from tire power source before soldering Circuit Boards The components mounted on the circuit boards in the 7A19 can be replaced using no...

Page 17: ...aking sure pins are aligned with their sockets gently push into the socket NOTE rhe leads of the integrated circuit are cut at the factory to prevent the integrated circuit from resting directly on the circuit board Defeating this purpose may allow the pin sockets to short against the integrated circuit case Solder the ground leads to the case and replace the heat sink Inductor Replacement L21 L22...

Page 18: ...ixtures are available from against the tolerances listed as a Performance Requirement Tektronix Inc Order by part number through your local see Specification section TEKTRONIX Field Office or representative Limits and tolerances given in other check steps are calibration guides and should not be interpreted as instru ment specifications Operator front panel adjustments are Calibration Equipment Al...

Page 19: ...U s e d f o r G A l N CheckIAdjust only c General Radio 1362 UHF oscillator with 1263 C Amplitude Regulating supply for Reflection a TEKTRONIX 7S12 I UHISAMPLER a iektronix PG 506 Calibration Gen erator Reflectometer 1 350 ps 35 ps pulse Coefficient Check only plug in unit with S I sampling head and step 6 1 amplitude 200 mV 1 step 10 1 S 52 Pulse Generator head This system Sensitivity to 100 mp i...

Page 20: ...check a TEKT RONlX Part No 067 0589 00 19 Plug in Extender Used for risetime and aberrations check adjust a TEKTHONIX Part No 067 0616 00 20 Signal Pick off with GR adapters Signal pick off connects to the rear connector of 7000 Series vertical amplifiers for gaining access to signal and trigger lines Used for common mode check adjust HF aberration check and adjust a TEKTRONIX Part No 067 0655 00 ...

Page 21: ...nceCheckIAdjust accuracy The performance of the instrument can be checked at any temperature within the 0 c to 50 c 2 BalanceCheckIAdjust range 3 Common Mode CheckIAdjust Preliminary Control Settings 4 lnput CurrentAdjust Set the calibration oscilloscope and 7A19 as follows 5 TemperatureCompensation Adjust CalibrationOscilloscope 46 GAIN CheckIAdjust Intensity Focus Control lllum Grat lllum Vertic...

Page 22: ...race shift to provide a convenient meansfor connecting the shorting while switching the POLARITY switch between i UP and strap INVER C d Adjust the Temperature Compensation control by b Adjust the Bal control for minimum vertical trace turning clockwise until the waveform just begins to shift as the POLARITY switch is alternated between UP increase and INVERT c Set the POLAR 17 Y switch to UP e Re...

Page 23: ...ust a Remove Rigid plug in extender Vertical plug in unit and Time Base unit from the Calibration Oscilloscope b Install the 7S11 with the S1 head into the Left Verti cal compartment Install the 7S12 with the S1 and S52 heads into the Right Vertical and A Horizontal compart ments c Connect the Signal Pickoff fixture to the 7A19 Connect the Flexiable Extender to the Signal Pickoff and plug the Flex...

Page 24: ... metal screwdriver close to a T coil REV A MAR 1978 r Adjust inductors L21 L22 L81 L82 L124 and L125 for minimum aberrations These coils are located on both sides of the circuit board refer to Fig 5 1 for their locations Eacir coil affects a different portion of the step waveform usually 2 to 10 ns after the initial step Po adjust the aberrations use the following procedure 1 Locate the portion of...

Page 25: ... into the Left Vertical compartment c Connect the 50 fi Power Divider Tee to the S1 head using a 20 inch GR cable and GR to BNC male adapter d Connect the 50 fi Power Divider Tee to the Pulse Output of the S52 head using a 10 inch GR cable and GR to 3 mm adapter e Connect the 50 fi Power Divider Tee to the 7A19 using a 2 ns cable f Set the 7A19 VOLTSIDIV control to 10 mV div POLARITY to UP and INP...

Page 26: ...erning any change in part number Change information if any is located at the rear of this manual SPECIAL NOTES AND SYMBOLS X O O O Part first added at this serial number O O X Part removed after this serial number ITEM NAME In the Parts List an ltem Name is separated from the description by a colon Because of space lim tations an ltem Name may sometimes appear as incomplete For further ltem Name i...

Page 27: ...I V I S I O N L I T T E L F U S E INC TEK1RONIX INC DALE ELECTRONICS INC Address City State Zip 1 2 0 1 2ND STREET SOUTH MILWAUKEE WI 5 3 2 0 4 ELECTRONICS PARK SYRACUSE NY 1 3 2 0 1 6 0 S JEFEOKSON ROAD WHIPPANY N J 0 7 9 8 1 LOWER WASHINGI ON STREET DOVER NH 0 3 8 2 0 2 9 0 5 BLUE STAR S T ANAHEIM CA 9 2 8 0 6 3 5 6 0 MADISON AVE INDIANAPOLIS I N 4 6 2 2 7 644 W 12TH ST E R I E PA 1 6 5 1 2 2 5 ...

Page 28: ...WITH L21 AND L22 BOlOlOO B037849 B037850 STANDARD ONLY CAP FXD CER DI 1 8PF 10 100V FURNISHED AS A UNiT WITH L21 AND L22 OPTION 4 ONLY CAP FXD CEK DI lPF NOM VALUE SEL FURNISHED AS A UNLT WLTH L21 AND L22 OPTION 4 ONLY CAP FXD CER DI 15PF 20 50V STANDARD ONLY CAP FXD CER DI lSPF NOM VALUE SEL STANDARD ONLY CAP FXD CER DI 15PF 20 50V BOlOlOO B011449 B011450 BOlOlOO B019999 OPTION 4 ONLY CAP FXD CER...

Page 29: ...30V 150MA 80009 SEMICOND DEVLCE SILICON 30V 150MA 80009 SEMICOND DEVICE SILICON 55V 2OOMA 80009 SEMICOND DEVICE SILICON 55V 2OOMA 80009 SEMICOND DhVICE SILICON 30V 150MA 80009 DELAY LINE F T EC DL13 OPTION 4 ONLY 159 0056 00 BOlOlOO B029999X 159 0056 00 BOlOlOO B039999X 159 0056 00 BOlOlOO B029999X FUSE CARTRiUGE O lA 125V FAST BLOW 75915 STANDARD ONLY FUSE CARTRIDGE O A I25V FAST BLOW 75915 OPTIO...

Page 30: ... 5 0 125W 01121 BB2025 STANDARD ONLY RES FXD CMPSN 3K OHM NOM VALUE SEL 01121 BB3025 STANDARD ONLY RES FXD CMPSN 4 7K OHM 5 0 125W 01121 BB4725 BOlOlOO B011789 B011790 B029999 B030000 STANDARD ONLY RES FXD CMPSN 2K OHM 5 0 125W 01121 BB2025 OPILUN 4 ONLY RES FXD CMPSN 3K OHM NOM VALUE SBL 01121 BB3025 OPTION 4 ONLY RES FXD CMPSN 4 7K OHM 5 0 125W 01121 BB4725 BOlOlOO B019999 B020000 B039999 B04000...

Page 31: ... VALUE SEl R30 321 0097 00 RES FXD FI14M 100 OHM 1 0 125W R32 323 0149 00 RES FXD FLLM 348 OHM 1 0 50W Mfr Code Mfr Part Number 01121 BB3615 01121 CB1815 01121 CB6215 01121 CB6215 91637 MFF1816GlOOROF 75042 CtCTO 3480F RES FXD CMPSN 2 7M OHM 5 0 25W RES VAR NONWIR 5K OHM lW W SW R68 FURNISHbD AS A UNIl WITH S70 RES FXD FILM lK OHM 1 0 25W RES VAR NONWIR 2 5K OHM 10 RES THEKMAL 390 OHM 10 RllO R112...

Page 32: ... S INPUT OPTION 4 ONLY SW CAM ACTK AS INPUT OPTION 4 ONLY SW CAM ACTR AS VOLTS DIV STANDARD ONLY SW CAM ACTR AS VOLTS DIV OPTION 4 ONLY BOlOlOO B029999 B030000 BOlOlOO B039999 ACTR ASSY CAM S POLARITY STANDARD ONLY SW CAM ACTR AS POLARITY STANDARD ONLY ACTR ASSY CAM S POLARITY OPTION 4 ONLY SW CAM ACTR AS POLARITY OPTION 4 ONLY RES VAR NONWIR 5K OHM lW W SW S70 FURNISHED AS A UNIT WITH R68 ACTK AS...

Page 33: ... line Indicating device lamp Spark Gap Fuse Filter Heat dissipating device heat sink heat radiator etc Heater H y b r i d circuit Connector stationary p o r t i o n Relay Inductor fixed or variable Inductor resistor combination Meter Connector movable p o r t i o n Transistor o r silicon controlled rectifier Resistor fixed or variable The following special symbols are used on the diagrams AMP 11V ...

Page 34: ...r 7 I I 0P 0n A L ATTENUATOR COUPLING I PROBE CODING C U P F E Mf T m I L TERM NATOR I I I 6 V L POWER s u PPLY i e Scans by ArtekMedia 2008 ...

Page 35: ...P O L A R T Y S I G N A L O U T AMPLIF ER I I GURRENT I I I I I I 7 R GGER MPL FIER POLARITY I I 1243 07 hq BLOCK DIAGRAM Scans by ArtekMedia 2008 ...

Page 36: ...9 4 u 1 w 1 i See Parts List for serial number ranges A1 7A19 Amplifier board t SN B037849 below tt SN 8037850 up J won4 a we my 0 FUSE 25X I SX 10X A A2 7A19Amplifier boardAttenuatorcircuitboardassemblyabove SN 8030000 REV B MAR 1979 Scans by ArtekMedia 2008 ...

Page 37: ...plied to input connector for waveforms 7A16A right vertical compartment usirrg a 10X probe with readout coding ring P6062A probe used for waveforms on diagrams Polarity Bandwidth Position Coupling Variable I UP Full Centered AC Cal In Vertical Mode Horizontal Mode A Intensity B Intensity Calibrator Volts Rate A Trigger Source B Trigger Source Right A Optimum Counterclockwise 40 rnV 1 kHz Right Ver...

Page 38: ...3 3 52 7 5 4 3 2 31 3 1 3 a TSB 2 0 Z9 s T S Q t 23 2 8 1ie 27 i s 26 20 25 i2 5 24 24 23 23 2 2 2 28 RI7 28 9 5 3 i 19 13 I S 15v 8 7 8 7 5 L 5 8 5 14 4 a iTRIGGER 3 8 2 t 1 3 12 8 SIGNAL 8 I L CLOSUCE 331 N U CATES A c 3 N T A C T 5 i L O 5 L U d LUNTALT 3 A CONTACTS 4 R i O k bM SIDE OF BOARD P m w a 103 r 00 C C U N O N y k 9 _ MODE B A L TEMP I C76 L O M P ISV 15V Scans by ArtekMedia 2008 ...

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Page 40: ...G BD BRKT BRS BRZ BSHG CAB CAP CkH CHAS CKT COMP CONN cov CPLG CRT DEG DWR INCH NUMBER SIZE ACTUATOR ADAPTER ALIGNMENT ALUMINUM ASSEMBLED ASSEMBLY A7 l ENUATOR AMERICAN WlRE GAGE BOARD BRACKt r BRASS BRONZE BUSHING CABINET CAPACITOR CEHAMIC CHASSIS CIRCUIT COMPOSITION CONNECTOR COVER COUPLING CATHODE R A Y TUBE DEGREE DRAWER REV A MARCH 1978 FI C7HN ELEC ELCTLT ELEM EPL EQPT EXT FIL FI FX FLH FLTR...

Page 41: ...OMPANY INC INDUSTRIAL RETAINING RING CO SEALECTRO CORP Address City State Zip 2 3 7 0 OWN STKFET SANTA CLARA CA 9 5 0 5 0 7 9 2 3 SW CIRRUS DRIVE BEAVERTON OREGON 9 7 0 0 5 P 0 BOX 3 6 0 8 HARRISBURG PA 1 7 1 0 5 7 1 0 0 LAMPSON AVE GARDEN GROVE CA 9 2 6 4 2 145 WOODWARD AVENUE 1 0 ESNA PARK DRIVE YOUK EXPRESSWAY 3 5 6 0 MADISON AVE SOUTH NORWALK CT 0 6 5 8 6 MARKHAM ON I ARIO CANADA NEW CUMBERLAN...

Page 42: ... CH ATTACHING PARTS FOR EACH SCREW MACHINE 2 56 X 0 25 INCH PNH STL WASHER LOCK INTL 0 092 ID X 0 175 OD STL WASHER FLAT 0 09 LD X 0 188 OD BRS CLIP ATTENUATOR CKT BOARD ASSY ATTENUATOR SEE A2 EPL ATTACHING PARTS SCR ASSEM WSHR 4 40 X 0 312 INCH PNH BRS 4 CKT BOARD ASSY INCLUDES CONNECTOR BODY CKT BD MT 2 PRONG CONTACT ASSY EL CAM SWITCH TOP CONT ASSY ELEC CAM SWII CH BOI LOM CONTACT ELEC 0 178 IN...

Page 43: ...UBPANEL FRONT ATTACHING PARTS SCR TPG THD FOR 6 32 X 0 50 INCH PNH STL REL BAR LATCH PLUG IN UNIT SPRING HLCPS 0 14 OD S 1 126 L O l6 DIA W SPRING PLAT 0 825 X 0 322 SST PAWL 0 475 X 0 21 X 0 184 INCH PLSTC PANEL REAR ATTACHING PARTS SCR TPG THD FOR 6 32 X 0 50 INCH PNH STL SPACER SLEEVE 0 18 ID X 0 25 OD X O lO1 L INTEGRATED CKI ATTACHING PARTS NUT EXTENDED WA 10 32 X 0 375 INCH STL HEAT SINK ELE...

Page 44: ...NH STL 4 WASHER LOCK 4 INTL O O15THK STL CD PL 2 SCREW MACHINE 2 56 X 0 188 INCH PNH S I L 2 WASHER LOCK INTL 0 092 ID X 0 18 0D STL 4 NUT PLAIN HEX 4 40 X 0 188 INCH BRS 1 SPRING FLAT RED COLORED 1 ROLLER DE TKNT 0 125DIA X 0 125 INCH L 1 BEARING CAM SW FRONT ATTACHING PARTS 1 RING RETAINING O 395 FREE ID X 0 025 STL 1 ACTR ASSY CAM S INPUTIINVERT 4 NUT PLAIN HEX 4 40 X 0 188 INCH BRS 1 BEARING C...

Page 45: ...O15THK STLCD PL WASHEK LOCK 4 INTL O O15THK SIL CD PL SCRhW MACHINE 2 56 X 0 188 INCH PNH STL WASHER LOCK INTL O O92 ID X 0 18 0D STL WASHER LOCK 8 EXT O O2 THK STL CD PL NUT PLAIN HEX 4 40 X 0 188 INCH BRS NUl PLAIN HEX 4 40 X 0 188 INCH BRS NUT PLAIN HEX 4 40X 0 188 INCH BRS NUT PLAIN HEX 2 56 X 0 188 INCH BRS SPRING YLAT RED COLORtD ROLLER DE IhNl 0 125 DIA X 0 125 INCH L BEARING CAM SW FRONT A...

Page 46: ... 0 25 100 DEG FLH STL 1 DELAY LINE ELEC 1 COVER DLY LINE 1 COVER DLY LINE 9 SCREW MACHINE 4 40 X 0 312 100 DEG FLH STL 11 SCREW MACHINh 4 40 X 0 312 100 DEG FLH STL 4 HOLDER DLY LINE 4 HOLDER DLY LINE 1 HOLDER DLY LINE 2 CAP DRlVb BLOCK 2 GEAR RACK 1 DELAY LINE ELEC 2 DELAY LINE ELEC 2 DELAY LINE ELEC 2 SUPPORT SHAFI 1 SHAFT SI MIGHl 1 SPRING HLCPS 2 CONN FEEDTHRU 3MM FEMALE EAEND 2 JACK TIP 2 CON...

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Page 48: ...7A19 AMPLIFIER Scans by ArtekMedia 2008 ...

Page 49: ...7A19 AMPLIFIER Scans by ArtekMedia 2008 ...

Page 50: ...Scans by ArtekMedia 2008 ...

Page 51: ...Fig Index Tektronix SeriallModel No Mfr No Part No Eff Dscont Q t 1 2 3 4 5 Name Descri tion Code Mfr Port Number 7A19 AMPLIFIER Scans by ArtekMedia 2008 ...

Page 52: ...ange information sheets are carried in the manual until all changes are permanently entered some duplication may occur If no such change pages appear following this page your mant al is correct as printed SERVICE NOTE Because of the universal parts procurernent problem some electrical parts in your insirun ent may be different from those described in the Replaceable Electrical Parts List I heparts...

Page 53: ...igh Amplitude output put 60 V 100 V PG 506 Does not have chopped feature SG 503 Amplitude range 5 mV to 5 5 V p p SG 503 Frequency range 250 kHz to 250 MHz SG 504 Frequency range 245 MHz to 1050 MHz TG 501 Trigger output slaved to marker output from 5 sec through 100 ns One time mark can be generated at a time TG 501 Trigger output slaved to market output from 5 sec through 100 ns One time mark ca...

Page 54: ...nimum S p e c i f i c a t i o n s CHANGE TO I Amplitude accuracy w i t h i n 0 25 range 50 mV t o 2 V i n t o 50 ohm frequency 1 kHz I Page 5 5 Step 5 Temperature Compensation Adjust p a r t a I CHANGE TO I a Connect a IkHz 0 2 V i n t o 50 ohm square wave s i g n a l from t h e o s c i l l o s c o p e Cali brator t o t h e 7A19 INPUT using a 42 i n c h BNC cable I Page 5 5 Step 6 GALN Check Adjus...

Page 55: ...sare typically scanned in black and white at 300 dpi 2 Photo pages are typicallyscanned in gray scalemode at 600dpi 3 Schematic diagram pages are typiwlly scanned in btack and white at 600 dpi unlessthe original manual had colored high lighting as isthe case for some 70 svintage TeMronix manuals If you purchased this manual from us typically through our Ebay name of ArtekMedia thank you very much ...

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