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TEK MANUAL
Part No . 070-4417-01
Product Group 26
494/494P
SPECTRUM ANALYZER
OPTIONS INCLUDED
VOLUME 2
WARNING
THE FOLLOWING SERVICING (INSTRUCTIONS
ARE FOR USE BY QUALIFIED PERSONNEL ONLY,
TO AVOID PERSONAL INJU Y, DO NOT
PERFORM ANY SERVICING OT ER THAN THAT
CONTAINED IN OPERATING (INSTRUCTIONS
UNLESS YOU ARE QUALIFIED TC DO SO . REFER
TO OPERATORS SAFETY S MMARY AND
SERVICE SAFETY SUMMARI PRIOR TO
PERFORMING ANY SERVICE. I
Please Check for
CHANGE INFORMATION
of the Rear of This Manual
First Printing OCT 1983
Tbktronao
Revised OCT 1984
GU~rhoma~u.env
Page Content 221 Power Supply CCA
494/494P Service Vol. 2
224 Power Supply Schematic (Primary
71 Functional Block Diagram Section)
72 1st Converter Block Diagram 225 Fan Drive
73 2nd Converter Block Diagram
74 3rd Converter Block Diagram
75 IF Section Block Diagram
227 Power Supply Schematic (Secondary
and Fan Drive)
228 Motherboard CCA (front)
4910 TABLE OF CONTENTS
76 Display Control Block Diagram 229 Motherboard CCA (Rear) This manual is divided into two volumes as follows .
77 Frequency Control Block Diagram 230 Mechanical Parts
78 Counter and Phase Lock Block Diagram 233 Exploded Views: Front Panel/CRT
79 Digital Control Block Diagram 240 Power Supply/Rear Panel
80 Power Supply Block Diagram 241 Chassis, HVPS, VR1, VR2 VOLUME 1 VOLUME 2
81 RF Deck Interconnect 249 Card Stack
82 1st LO (YIG Oscillator) Interface 250 RF Deck
SAFETY SUMMARY SAFETY SUMMARY
83 1st Converter + 2072 MHz 2nd Converter Section 1 GENERAL INFORMATION Section 9 REPLACEABLE ELECTRICAL PARTS
84 1620 MHz Phase Lock Section 2 SPECIFICATION Section 10 DIAGRAMS
89 2182 MHz Microstrip Oscillator Section 3 INSTALLATION, PREPARATION FOR USE, Section 11 REPLACEABLE MECHANICAL PARTS
93 829 MHz 2nd Converter (LO Section) Index by Didier Juges KO4BB REPACKAGING, AND STORAGE
97 829 MHz 2nd Converter (IF Section) www.ko4bb.com Section 4 PERFORMANCE CHECK
102 110 MHz IF 3rd Converter Section 5 ADJUSTMENT PROCEDURE
Section 6 MAINTENANCE
103 Reference Lock THEORY OF OPERATION
Section 7
109 Variable Resolution 1 (VR1) Section 8 OPTIONS
111 Variable Resolution 2 (VR2) Appendix A GLOSSARY
118 Log and Video Amplifier + Detector Schematic
123 Video Amplifier Block Diagram
124 Log Amplifier/Detector Schematic
126 Video Amplifier Schematic
127 A40 CCA
128 A40 Video Processor Block Diagram
130 Video Processor and Marker Interface (SH1)
134 Video Processor and Marker Interface (SH2)
135 Digital Storage, Vertical, CCA
138 Digital Storage, Vertical, Schematic
141 Digital Storage, Horizontal, Schematic
142 Deflection Amplifier CCA
146 Z Axis and RF Interface
150 High Voltage CCA
152 High Voltage Schematic
153 CRT Readout
157 Sweep CCA
160 Span Attenuator Block Diagram
165 1st LO Driver CCA
171 Preselector Driver CCA
175 Center Frequency Control CCA
180 Harmonic Mixer and Phase Gate Block Diagram
185 Counter CCA
189 Synthesizer CCA
197 Processor CCA
201 Memory CCA
205 Front Panel CCA
210 GPIB Block Diagram (with Lithium Battery)
218 Accessory Interface CCA (Rear Panel)
4941494P service Vol. 2
LIST OF ILLUSTRATIONS
The following figures are located near their associated diagrams in Section 10 .
10-1 A16A1-1st LO Interface circuit board. 10-27 A61-Digital Storage, Vertical circuit board.
10-2 A18Al-2072 MHz 2nd Converter circuit board . 10-28 A60-Digital Storage, Horizontal circuit board.
10-3 A22A1-16-20 Phase Lock circuit board. 10-29 A64-Deflection Amplifiers circuit board .
10-4 A22A2A1-2182 MHz Microstrip Oscillator circuit 10-30 A70-Z-Axis & RF Interface circuit board.
board. 10-31 A74---High Voltage circuit board .
10-5 A22A2A2-2200 MHz Reference circuit board. 10-32 A66-CRT Readout circuit board.
10-6 A22A2A3-2200 MHz Reference Mixer circuit 10-33 A72-Sweep circuit board.
board. 10-34 A48--Span Attenuator circuit board .
10-7 A23A2-25 MHz Phase Lock circuit board. 10-35 A44-1st LO Driver circuit board
10-8 A23A3-Harmonic Mixer circuit board 10-36 A42-Preselector Driver circuit board.
10-9 A23A4-829 MHz Diplexer circuit board . 10-37 A46-Center Frequency circuit board.
10-10 A23A5-829 MHz Amplifier circuit board . 10-38 A26-Auxiliary Synthesizer circuit board.
10-11 A23A6-110 MHz IF Select circuit board . 10-39 A51-Counter circuit board.
10-12 A23A7-829 MHz 2nd Converter circuit board. 10-40 A50A1-Synthesizer circuit board.
10-13 A32A1--110 MHz IF Amplifier circuit board. 10-41 A50A4-Error Amplifier circuit board .
10-14 A34A1-100 MHz Osc & 3rd Mixer circuit board. 10-42 A50A2-Strobe Driver circuit board .
10-15 A36A1-Reference Lock circuit board. 10-43 A50A3-Offset Mixer circuit board .
10-16 A69A1-VR#1 Mother board. 10-44 A50A5-Controller Oscillator circuit board-
10-17 A69A2-VR Input circuit board. 10-45 A58-Processor circuit board.
10-18 A69A3-1st Filter Select circuit board . 10-46 A54-Memory circuit board.
10-19 A69A4-10 dB Gain Steps circuit board . 10-47 A38-Front Panel circuit board.
10-20 A69A5-20 dB Gain Steps circuit board . 10-48 A56-GPIB circuit board.
10-21 A68A1-VR#2 Mother board. 10-49 A56-GPIB circuit board.
10-22 A68A3-Band Leveling circuit board. 10-50 A30A76-Accessories Interface circuit board.
10-23 A68A2-2nd Filter Select circuit board . 10-51 A30A1-Main Power Supply circuit board.
10-24 A68A4-Post VR Amplifier circuit board. 10-52 A30A2-Fan Drive circuit board.
10-25 A62-Log & Video Amplifier circuit board.
10-26 A40-Video Processor & Marker Interface circuit
board.
4941494P Service Vol. 2 494/494P Service Vol. 2
Grounding the Product Use the Proper Power Cord
49 49
This product is grounded through the grounding conductor Use only the power cord and connector specified for your
of the power cord . To avoid electrical shock, plug the power product.
SERVICING SAFETY SUMMARY cord into a properly wired receptacle before connecting to
the product input or output terminals. A protective ground
connection by way of the grounding conductor in the power Use only a power cord that is in good condition .
cord is essential for safe operation .
FOR QUALIFIED SERVICE PERSONNEL ONLY
For detailed information on power cords and connectors,
see the General Information and Specifications section in
Danger Arising From Loss of Ground Volume 1 of the 494/494P Service manual .
Do Not Service Alone TERMS
Upon loss of the protective-ground connection, all accessi-
Do not perform internal service or adjustment of this prod-
ble conductive parts (including knobs and controls that may Refer cord and connector changes to qualified service
uct unless another person capable of rendering first aid and
In This Manual appear to be insulating) can render an electric shock . personnel .
resuscitation is present.
CAUTION statements identify conditions or practices that
could result in damage to the equipment or other property .
Do Not Wear Jewelry WARNING statements identify conditions or practices that
Remove jewelry prior to servicing . Rings, necklaces, and could result in personal injury or loss of life.
other metallic objects could come into contact with danger-
ous voltages and currents .
As Marked on Equipment
CAUTION indicates a personal injury hazard not immedi-
ately accessible as one reads the marking, or a hazard to
property including the equipment itself .
0
Use Care When Servicing With Power On
Dangerous voltages exist at several points in this product .
To avoid personal injury, do not touch exposed connections
DANGER indicates a personal injury hazard immediately ac-
cessible as one reads the marking .
0
and components while power is on .
Disconnect power before removing protective panels, sol- SYMBOLS
dering, or replacing components .
In This Manual
This symbol indicates where applicable
Power Source
cautionary or other information is to be
This product is intended to operate from a power source found
that will not apply more than 250 volts rms between the
supply conductors or between either supply conductor and
ground . A protective ground connection by way of the As Marked On Equipment
grounding conductor in the power cord is essential for safe
operation.
DANGER-High Voltage .
Protective ground (earth) terminal .
X-Radiation
X-ray emission generated within this instrument has been ATTENTION-Refer to manual .
sufficiently shielded . Do not modify or otherwise alter the
high voltage circuitry or the CRT enclosure. Refer to manual .
0 0
iv
Section 9--4941494P Service Vol. 2
494/494P Service Vol. 2
REPLACEABLE
ELECTRICAL PARTS
40 0 PARTS ORDERING INFORMATION
Only the circuit number will appear on the diagrams and
Replacement parts are available from or through your local
circuit board illustrations- Each diagram and circuit board
Tektronix. Inc Field Office or representative
illustration is clearly marked with the assembly number .
Changes to Tektronix instruments are sometimes made to Assembly numbers are also marked on the mechanical exploded
accommodate improved components as they become available, views located in the Mechanical Parts List . The component
number is obtained by adding the assembly number prefix to the
and to give you the benefit of the latest circuit improvements
circuit number .
developed in our engineering department, It is therefore impor-
in
tant, when ordering parts, to include the following information
Part number, instrument type or number, serial The Electrical Parts List is divided and arranged by
your order
assemblies in numerical sequence (e .g ., assembly At with its
number, and modification number if applicable .
subassemblies and parts, precedes assembly A2 with its sub-
assemblies and parts),
If a part you have ordered has been replaced with a new or
improved part your local Tektronix, Inc. Field Office orrepresen-
Chassis-mounted parts have no assembly number prefix
tative will contact you concerning any change in part number
and are located at the end of the Electrical Parts List .
Change information, if any. i s located at the rear of this
manual
TEKTRONIX PART NO. (column two of the
LIST OF ASSEMBLIES
Electrical Parts List)
A list of assemblies can be found at the beginning of the
Indicates part number to be used when ordering replace-
Electrical Parts List The assemblies are listed in numerical order.
ment part from Tektronix.
When the complete component number of apart is known, this list
will identity the assembly in which the part is located,
CROSS INDEX-MFR . CODE NUMBER TO SERIAL/MODEL NO. (columns three and four
MANUFACTURER of the Electrical Parts List)
0 40 The Mfr Code Number to Manufacturer index for the
Electrical Parts List is located immediately after this page The
Column three (3) indicates the serial number at which the
part was first used Gotumnfour (4)indicates theserial number at
Cross Index provides codes. names and addresses of manufac- which the part was removed . No serial number entered indicates
turers of components listed in the Electrical Parts List, part is good for all serial numbers,
ABBREVIATIONS
Abbreviations conform to American National Standard Y1 .1 NAME & DESCRIPTION (column five of the
Electrical Parts List)
In the Parts List, an item Name is separated from the
COMPONENT NUMBER (column one of the description by a colon () . Because of space limitations, an Item
Electrical Parts List) Name may sometimes appear as incomplete . For further Item
Name identification, the U S, Federal Cataloging Handbook H6-1
A numbering method has been used to identify assemblies .
can be utilized where possible
subassemblies and parts Examples of this numbering method
and typical expansions are illustrated by the following
Example a. component number
A23R1234 A23 R1234 MFR . CODE (column six of the Electrical Parts
List)
Assembly number Circuit number
Indicates the code number of the actual manufacturerof the
Read : Resistor 1234 of Assembly 23 part, (Code to name and address cross reference can be found
immediately after this page.)
Example b. component number
A23A2R1234 A23 A2 R1234
Assembly Subassembly Circuit MFR . PART NUMBER (column seven of the
number number number Electrical Parts List)
4941494P Programmable Spectrum Analyzer.
0 0 Read : Resistor 1234 of Subassembly 2 of Assembly 23 Indicates actual manufacturers part number
vi
Replaceable Electrical Parts-494/494P Service Vol. 2 Replaceable Electrical Parts-494/494P Service Vol. 2
CROSS INDEX-MFR. CODE NUMBER TO MANUFACTURER CROSS INDEX-MFR . CODE NUMBER TO MANUFACTURER
Mfr. Code Manufacturer Address City . State, Zip Mir Coc1f: Ma , iu!aclurer Address Clty, State, Zip
OOOAX BUEHLER PRODUCTS INC. PO BOX A,HIGHWAY 70 EAST KINGSTON, NC 28501 27014 NATIONAL SEMICONDUCTOR CORP. 2900 SEMICONDUCTOR DR . SANTA CLARA, CA 95051
000F6 CALIFORNIA EASTERN LABORATORIES 3005 DEMOCRACY WAY SANTA CLARA. CA 95050 27264 MOLEX, INC. 2222 WELLINGTON COURT LISLE, IL 60532
OOOFJ MARCOM SWITCHES INC. 67 ALBANY STREET CAZENOVIA, N .Y . 13035 29587 BUNKER-RAMO CORP ., AMPHENOL
000LH ELECTRONIC COMPONENTS INTERNATIONAL 121 SHELDON STREET EL SEGUNDO, CA 90245 INDUSTRIAL DIV. 1830 $. 54TH AVE. CHICAGO, IL 60650
000LI TOPTRON CORP TOKYO, JAPAN 31781 EDAC INC . 20 RAILSIDE RD . DON MILLS. ONT, CANADA M3A 1
000LR TOSHIBA AMERICA INC . SUITE 190 2151 MICHELSON DR . IRVINE, CA 92715 32293 INTERSIL, INC. 10900 N. TANTAU AVE. CUPERTINO, CA 95014
00779 AMP, INC, P .O. BOX 3608 HARRISBURG, PA 17105 32997 BOURNS, INC., TRIMPOT PRODUCTS DIV. 1200 COLUMBIA AVE . RIVERSIDE, CA 92507
33095 SPECTRUM CONTROL. INC. 152 E MAIN STREET FAIRVIEW, PA 16415
00779 AMP, INC. P .0. BOX 3608 HARRISBURG, PA 17105 33096 COLORADO CRYSTAL CORPORATION 2303 W 8TH STREET LOVELAND. CO 80537
00853 SANGAMO ELECTRIC CO ., S. CAROLINA DIV. P,0. BOX 128 PICKENS, SC 29671
01121 ALLEN-BRADLEY COMPANY 1201 2ND STREET SOUTH MILWAUKEE, WI 53204 43096 COLORADO CRYSTAL CORPORATION 2303 W 8TH STREET LOVELAND, CO 80537
01281 TRW ELECTRONIC COMPONENTS, SEMICONDUCTOR 3,1335 ADVANCED MICRO DEVICES 901 THOMPSON PL . SUNNYVALE. CA 94086
OPERATIONS 14520 AVIATION BLVD, LAWNDALE,CA 90260 34371 HARRIS SEMICONDUCTOR, DIV. OF
01295 TEXAS INSTRUMENTS, INC . HARRIS CORPORATION P. 0. BOX 883 MELBOURNE, FL 32901
SEMICONDUCTOR GROUP P.O . BOX 5012 DALLAS, TX 75222 34630 TYCO FILTERS DIV., INC. 3940 W. MONTECITO PHOENIX, AZ 85019
02111 SPECTROL ELECTRONICS CORPORATION 17070 EAST GALE AVENUE CITY OF INDUSTRY . CA 91745 34649 INTEL CORP . 3065 BOWERS AVE. SANTA CLARA, CA 95051
02735 RCA CORPORATION . SOLID STATE DIVISION ROUTE 202 SOMERVILLE, NY 08876 50140 K AND L MICROWAVE INC
03508 GENERAL ELECTRIC COMPANY, SEMICONDUCTOR 50434 HEWLETT-PACKARD COMPANY 640 PAGE MILL ROAD PALO ALTO, CA 94304
PRODUCTS DEPARTMENT ELECTRONICS PARK SYRACUSE, NY 13201 50438 HEWLETT-PACKARD CO . . DATA SYSTEMS DIV. 11000 WOLFE RD . CUPERTINO, CA 95074
04222 AVX CERAMICS, DIVISION OF AVX CORP . P 0 BOX 867 MYRTLE BEACH, SC 29577 50558 ELECTRONIC CONCEPTS, INC. 526 INDUSTRIAL WAY WEST EATONTOWN. NJ 07724
04713 MOTOROLA, INC., SEMICONDUCTOR PROD . DIV. 5005 E MCDOWELL RD,PO BOX 20923 PHOENIX, AZ 85036 50667 DYNATECHIUIZ INC, 9522 WEST JEFFERSON BLVD, CULVER CITY, CA 90230
05397 UNION CARBIDE CORPORATION, MATERIALS 51181 KEYTRONICS INC. 707 NORTH ST . ENDICOTT, NY 13760
SYSTEMS DIVISION 11901 MADISON AVENUE CLEVELAND, OH 44101 51642 CENTRE ENGINEERING INC, 2820 E COLLEGE AVENUE STATE COLLEGE, PA 16801
051328 GENERAL INSTRUMENT CORP ELECTRONIC 51984 NEC AMERICA INC. RADIO AND
SYSTEMS DIV, 600 W JOHN ST . HICKSVILLE LI, NY 11802 TRANSMISSION DIV . 2990 TELESTAR CT . SUITE 212 FALLS CHURCH, VA 22042
06090 RAYCHEM CORPORATION 300 CONSTITUTION DRIVE MENLO PARK, CA 94025 :12769 SPRAGUE GOODMAN ELEC INC. 134 FULTON AVENUE GARDEN CITY PARK, NY 11040
06665 PRECISION MONOLITHICS INC. 1500 SPACE PARK DR . SANTA CLARA, CA 95050 53184 XCITON CORPORATION 5 HEMLOCK STREET LATHAM, NY 12110
07088 KELVIN ELECTRIC COMPANY 5907 NOBLE AVENUE VAN NUYS, CA 91411 54473 MATSUSHITA ELECTRIC, CORP . OF AMERICA 1 PANASONIC WAY SECAUCUS, NJ 07094
07263 FAIRCHILD SEMICONDUCTOR, A DIV. OF 55680 NICHICONIAMERICAICORP . 6435 N PROESEL AVENUE CHICAGO, IL 60645
FAIRCHILD CAMERA AND INSTRUMENT CORP . 464 ELLIS STREET MOUNTAIN VIEW, CA 94042 56289 SPRAGUE ELECTRIC CD, 87 MARSHALL ST . NORTH ADAMS, MA 01247
07716 TRW ELECTRONIC COMPONENTS, IRC FIXED 57668 R-OHM CORP, 16931 MILLIKEN AVE. IRVINE, CA 92713
RESISTORS, BURLINGTON DIV. 2850 MT . PLEASANT BURLINGTON, IA 52601 59660 TUSONIX INC . 2155 N FORBES BLVD TUCSON, AZ 85705
08261 SPECTRA-STRIP CORP . 7100 LAMPSON AVE. GARDEN GROVE. CA 92642 59821 CENTRALAB INC 7158 MERCHANT AVE EL PASO, TX 79915
08806 GENERAL ELECTRIC CO. . MINIATURE SUB NORTH AMERICAN PHILIPS CORP
LAMP PRODUCTS DEPARTMENT NELA PARK CLEVELAND, OH 44112 71400 BUSSMAN MFG., DIVISION OF MCGRAW~
09023 CORNELL-DUBILIER ELECTRONIC DIVISION EDISON CO . 2536 W. UNIVERSITY ST . ST . LOUIS, MO 63107
FEDERAL PACIFIC ELECTRIC CO . 2552 DALRYMPLE ST . SANFORD, NO 273,30 71468 ITT CANNON ELECTRIC 666 E. DYER RD . SANTA ANA, CA 92702
12954 SIEMENS CORPORATION, COMPONENTS GROUP 8700 E THOMAS RD, P 0 BOX 1390 SCOTTSDALE . AZ 85252 72982 ERIE TECHNOLOGICAL PRODUCTS, INC. 644 W, 12TH ST. ERIE, PA 16512
12969 UNITRODE CORPORATION 580 PLEASANT STREET WATERTOWN, MA 02172 73138 BECKMAN INSTRUMENTS, INC ., HELIPCT DIV. 2500 HARBOR BLVD . FULLERTON, CA 92634
14552 MICRO SEMICONDUCTOR CORP . 2830 E FAIRVIEW ST . SANTA ANA, CA 92704 73899 JED ELECTRONICS COMPONENTS CORP . PINETREE ROAD OXFORD, NO 27565
14752 ELECTRO CUBE INC, 1710 S. DEL MAR AVE. SAN GABRIEL. CA 91776 74276 SIGNALITE DIV ., GENERAL INSTRUMENT CORP . 1933 HECK AVE. NEPTUNE, NJ 07753
14936 GENERAL INSTRUMENT COHP . SEMICONDUCTOR 74970 JOHNSON, E. F., CO . 299 10TH AVE, S. W, WASECA, MN 56093
PRODUCTS GROUP P.O . BOX 600,600 W . JOHN ST . HICKSVILLE, NY 11802 75042 TRW ELECTRONIC COMPONENTS, IRC FIXED
15238 ITT SEMICONDUCTORS, A DIVISION OF INTER RESISTORS, PHILADELPHIA DIVISION 401 N. BROAD ST. PHILADELPHIA, PA 19108
NATIONAL TELEPHONE AND TELEGRAPH CORP . P.0 . BOX 168,500 BROADWAY LAWRENCE, MA 01841 75378 CTS KNIGHTS, INC. 400 REIMANN AVE, SANDWICH, IL 60548
15454 ROOAN INDUSTRIES . INC. 2905 BLUE STAR ST . ANAHEIM . CA 92806 75915 LITTFLFUSE, INC. 800 E. NORTHWEST HWY DES PLAINES, IL 60016
15801 FLNWAL ELECTRONICS, DIV. OF KIDDE WALTER 76493 BELL INDUSTRIES, INC_,
AND CO ., INC. 63 FOUNTAIN ST. FRAMINGHAM . MA 01701 MILLER, J . W DIV. 19070 REYES AVE., P 0 BOX 5825 COMPTON, CA 90224
17540 ALPHA INDUSTRIES, INC . 20 SYLVAN RD . WOBURN, MA 01801 78488 STACKPOLE CARBON CO . ST MARYS, PA 15857
17856 SILICONIX. INC. 2201 LAURELWOOD DRIVE SANTA CLARA . CA 95054 80009 TEKTRONIX, INC. P 0 BOX 500 BEAVERTON, OR 97077
18203 ENGELMANN MICROWAVE 00 . SKYLINE DR . MONTVILLE, NJ 07045 83891 PIEZO MFG . CORP . P. O. BOX 5644 FORT LAUDERDALE, FL 33309
18324 SIGNETICS CORP . 811 E, ARGUES SUNNYVALE, CA 94086 84411 TRW ELECTRONIC COMPONENTS, TRW CAPACITORS 112 W. FIRST ST . OGALLALA, NE 69153
18612 VISHAY RESISTOR PRODUCTS DIV. 90201 MALLORY CAPACITOR CO ., DIV, OF 3029 E. WASHINGTON STREET
VISHAY INTERTECHNOLOGY INC. 68 LINCOLN HWY MALVERN, PA 19355 P, R MALLORY AND CO ., INC. P. 0. BOX 372 INDIANAPOLIS, IN 46206
19396 ILLINOIS TOOL WORKS, INC. PAKTRON DIV. 900 FOLLIN LANE, SE VIENNA, VA 22180 91293 JOHANSON MFG. COMPANY P O BOX 329 BOONTON, NJ 07005
22229 SOLITRON DEVICES, INC ., 91506 AUGAT. INC 33 PERRY AVE . ATTLEBORO. MA 02703
SEMICONDUCTOR GROUP 8808 BALBOA AVENUE SAN DIEGO OPERS, CA 92123 91637 DALE ELECTRONICS, INC. P. 0. BOX 609 COLUMBUS, NE 68601
22526 BERG ELECTRONICS, INC YOUK EXPRESSWAY NEW CUMBERLAND, PA 17070 93958 REPUBLIC ELECTRONICS CORPORATION 176 E 7TH STREET PATERSON, NJ 07524
24355 ANALOG DEVICES INC, PIT 1 INDUSTRIAL PK,P 0 BOX 280 NORWOOD, MA 02062 95348 GORDOS CORPORATION 250 GLENWOOD AVENUE BLOOMFIELD, NJ 07003
24546 CORNING GLASS WORKS . ELECTRONIC 86733 SAN FERNANDO ELECTRIC MFG CO 1501 FIRST ST SAN FERNANDO, CA 91341
COMPONENTS DIVISION 550 HIGH STREET BRADFORD, PA 16701 93291 SEALECTRO CORP. 225 HOYT MAMARONECK, NY 10544
24931 SPECIALITY CONNECTOR CO ., INC, 2620 ENDRESS PLACE GREENWOOD, IN 46142 10020 UNITED CHEMI-CON INC. 1128 LEXINGTON ALIVE. ROCHESTER, NY 14606
25403 AMPEREX ELECTRONIC CORP ., SEMICONDUCTOR 10058 NEC ELECTRON INC . 252 HUMBOLT COURT SUNNYVALE, CA 94086
AND MICROCIRCUITS DIV, PROVIDENCE PIKE SLATERSVILLE, RI 02876 70510 PANASONIC COMPANY DIVISION OF
26769 NCI INC . 5900 AUSTRALIAN AVENUE WEST PALM BEACH. FL 33407 MATSUSHITA ELECTRIC CORP OF AMERICA ONE PANASONIC WAY SECAUCUS, NJ 07094
26805 OMNI SPECTRA INC., 10B91 MICONICS 1 FAIRCHILD AVE. PLAINVIEW, NY 11803
MICROWAVE CONNECTOR DIV . 140 FOURTH AVE WALTHAM. MA 02154 70900 UNITED CHEMI-CON 9801 W . HIGGINS ROAD ROSEMONT,IL 60018
27012 MICRO DEVICES, CORPORATION 1881 SOUTHLAND BLVD . DAYTON . OHIO 45439 71364 SYNETIX INDUSTRIES INC . 15050 NE 95TH STREET REDMOND, WA 98052
9-2 REV OCT 1984 REV OCT 1984 9- 3
Replaceable Electrical Parts-494i494P Service Vol . 2 Replaceable Electrical Parts-4941494P Service Vol . 2
Tektronix Serial/Model No . Mfr Tektronix Serial/Model No Mfr
Component No . Part No . Eff Dscon1 Name & Description Code Mfr Part Number Component No . Part No. Eff Dscont Name & Description Code Mfr Part Number
AT10 119-1007-07 ATTENUATOR,VAR :0-60DB IN 101313 STEPS 80009 119-1007-07 A30A57 670-7913-00 CKT BOARD ASSY :GPIB INTERFACE 80009 670-7913-00
AT11 015-1053-00 ATTENUATOR,FXD :3DB 26805 2082-4182-03 A30A57 ----- ----- (494P ONLY)
A10 119-1061-00 LIMITER ASSY :2GHZ 80009 119-1061-00 A30A76 670-5558-02 CKT BOARD ASSY :RLLAY DRIVER 80009 670-5558-02
119-1164-00 BIAS RETURN : 80009 119-1164-00 A32 119-1015-DO FILTER,AMPL :110MHZ 80009 119-1015-00
A11
119-1017-00 FIRST CONV ASSY : 80009 119-1017-00 A32A1 670-5525-01 CKT BOARD ASSY110 IF AMPLIFIER 80009 670-5525-01
A12
A13 119-1019-00 POWER DIV ASSY : 80009 119-1019-00 A34 119-1579-DO OSCIMIXER ASSY :3RD CONVERTER 80009 119-1579-00
A14 119-1645-00 DIPLEXER ASSY: 80009 119-1645-00 A34A1 670-7901-00 CKT BOARD ASSY :3RD CONVERTER 80009 670-7901-00
A16 119-0752-01 8010100 8010206 OSCILLATOR, RF :2 .0 TO 6.1 GHZ,WICAN & CKT 80009 119-0752-01 A34A2 670-7905-00 CKT BOARD ASSY :100MHZ OSC REGULATOR 80009 670-7905-00
119-0752-02 13010207 OSCILLATOR,RF :2.0 TO 6.1 GHZ,WICAN & CKT 80009 119-0752-02 A36 119-1588-01 PH LOCK 3RD L0 : 80009 119-1588-01
A16
670-5540-00 CKT BOARD ASSYAST L 0 INTERFACE 80009 670-5540-DO A36A1 670-7900-01 CKT BOARD ASSY :REFERENCE LOCK 80009 670-7900-01
A16A1
A18 119-1096-02 SEC CONV ASSY : 80009 119-1096-02 A36A2 670-7917-00 CKT BOARD ASSY :HEFERENCE LOCK REGULATOR 80009 670-7917-01
A18A1 --- CKT BOARD ASSY :2ND CONVERTER A37 119-1576-01 OSCILLATOR, RE :10.000 MHZ CRYSTAL 80009 119-1576-01
A18A1 ----- ---- (PART OF A18) A38 670-7947-DI CKT BOARD ASSY :FRONT PANEL 80009 670-7947-01
119-1845-00 110 MHZ IF ASSY : 80009 119-1845-00 A40 670-8389-00 8010100 8010149 CKT BOARD ASSY :VIDEO PROCESSOR 80009 670-8389-00
A19
A19A1 ----- ----- (PART OF A19 OPTION 42 ONLY) A40 670-8389-01 8010150 CKT BOARD ASSY :VIDEO PROCESSOR 80009 670-8389-01
650-0736-00 PH LOCK 2ND LO : 80009 650-0266-00 A42 670-5552-03 CKT BOARD ASSY :PRESELECTOR DRIVER 80009 670-5552-03
A22
A22A1 670-7914-00 CKT BOARD ASSY16-20MHZ PHASELOCK 80009 670-7914-c0 A44 670-5551-05 CKT BOARD ASSY :1ST L 0 DRIVER 80009 670-5551-05
A22A2 119-1587-00 PH LOCK LO CONT : 80009 119-1587-00 A46 670-5547-03 CKT BOARD ASSY :CENTER FRED CONTROL 80009 670-5547-03
A22A2A1 670-7395-01 CKT BOARD ASSY :2182MHZ MICRO STRIP OSC 80009 670-7395-01 A46A1 670-7939-01 CKT BOARD ASSY :INTLRFACE 80009 670-7939-01
A22A2A2 670-7076-00 8010100 13010149 CKT BOARD ASSY :220MHZ REFERENCE 80009 670-7076-00 A46A3 670-7939-01 CKT BOARD ASSY :INTERFACE 80009 670-7939-01
A22A2A2 670-707&01 8010150 CKT BOARD ASSY :220MHZ REFERENCE 80009 670-7076-01 A48 670-555001 CKT BOARD ASSY :SPAN ATTENUATOR 80009 670-5550-01
670-7079-00 CKT BOARD ASSY :2200MHZ REFERENCE MIXER 80009 670-7079-00 A50 119-1580-01 8010100 9010320 PHASE LOCK ASSY :SYNTHESiZER 80009 119-1580-01
A22A2A3
A23 119-1131-03 8010100 8010340 SEC CONV ASSY :829MHZ 80009 119-1131-03 A50 119-1580-02 13010321 PHASE LOCK ASSY :SYNTHESIZER 80009 119-1580-02
A23 119-1131-04 8010341 SEC CON ASSY :829MHZ 80009 119-1131-04 A50A1 670-5519-00 CKT BOARD ASSY :SYNTHESIZER 80009 670-5519-00
A23A1 670-5936-00 CKT BOARD ASSY :719MHZ SECOND LO 80009 6705936-00 A50A2 670-5520-01 CKT BOARD ASSY :STROBE DRIVER 80009 670-5520-01
670-5937-03 CKT BOARD ASSY :25MHZ PHASE LOCI( 80009 670-5937-03 A50A3 670-5522-01 CKT BOARD ASSY :OFFSET MIXER 80009 670-5522-01
A23A2
570-6016-00 CKT BOARD ASSY :829MHZ HARMONIC MIXER 80009 670-6016-00 " A5OA4 670-7921-00 13010100 8010320 CKT BOARD ASSY :ERROR AMP 80009 670-7921-00
A23A3
670-6256-01 13010100 8010340 CKT BOARD ASSY :829MHZ DIPLEXER 80009 670-6256-01 A50A4 670-7921-01 8010321 CKT BOARD ASSY :ERROR AMP 80009 670-7921-01
A23A4
A23A4 670-6256-02 8010341 CKT BOARD ASSY :829MHZ DIPLEXER 80009 670-6256-02 A50A5 670-5524-01 8010100 8010224 CKT BOARD ASSY :CONTROLLED OSC 80009 670-5524-01
A23A5 670-6255-01 CKT BOARD ASSY :829MHZ AMPLIFIER 80009 670-6255-01 A5045 670-5524-02 B010225 CKT BOARD ASSY :CONTROLLED OSC 80009 670-5524-02
670-6015-01 CKT BOARD ASSYA 10MHZ IF SELECT 80009 670-6015-01 A51 670-7699-00 8010100 8010200 CKT BOARD ASSY :000NTLR 80009 670-7899-00
A23A6
670-6224-00 CKT BOARD ASSY :829MHZ SECOND CONVERTER 80009 670-6224-00 A51 670-7699-01 13010201 CKT BOARD ASSY :000NTER 80009 670-7899-01
A23A7
119-1010-00 8010100 8010224 HYBRID CKT ASSY :PHASE GATE DETECTOR 80009 119-1010-00 A54 670-7009-00 8010100 8010139 CKT BOARD ASSY :MEMORY 80009 670-7009-00
A24
119-1010-02 8010225 HYBRID CKT ASSY :PHASE GATE DETECTOR 80009 119-1010-02 A54 670-7009-01 8010140 13010237 CKT BOARD ASSY :MEMORY 80009 670-7009-01
A24
A24A1 670-5957-DO 13010100 8010224 CKT BOARD ASSY :PHASE GATE INPUT 80009 670-5957-00 A54 670-7009-02 8010238 CKT BOARD ASSY,MEMORY 80009 670-7009-02
A24A1 670-5957-01 13010225 CKT BOARD ASSY :PHASE GATE INPUT 80009 670-5957-01 A54 670-8768-00 8010221 CKT BOARD ASSY :MEMORY 80009 670-8768-00
119-1640-00 HARMONIC MIXER: 80009 119-1640-00 A54 ----- (OPTION 08141 ONLY)
A25
670-4376-00 CKT BOARD ASSY :HARMONIC MIXER INPUT 80009 670-4376-00 A54 670-8614-00 CKT BOARD ASSY .MEMORY 80009 670-8614-00
A25A3
670-7898-00 CKT BOARD ASSY :AUX SYNTHESIZER 80009 670-7898-00 A54 ----- ----- (OPTION 12 ONLY)
A26
A28 670-7920-00 CKT BOARD ASSY :MAIN 80009 670-792000 A54 670-8615-00 CKT BOARD ASSY :MEMORY 80009 670-8615-00
A28 ----- ----- (NO ELECTRICAL PARTS) A54 -------- (OPTION 13 ONLY)
A30 621-0499-00 POWER SUPPLY : 80009 621-049900 A54 670-8616-00 CKT BOARD ASSY :MEMORY 80009 670-8616-00
A30 -------- (494 ONLY) A54 -- )OPTION 14 ONLY)
621-0500-00 POWER SUPPLY : 130009 621-0500-00 A66 670-7896-00 B010100 8010049 CKT BOARD ASSY :GPIB 80009 670-1096-00
A30
--------- 1494P ONLY) A56 670-8431-00 13010050 6010139 CKT BOARD ASSY :GPIB 80009 670-8431-00
A30
621-0006-00 POWER SUPPLY : 80009 621-0006-00 A56 670-8431-01 8010140 6010237 CKT BOARD ASSY :GPIB 80009 670-8431-01
A30
-------- (494 OPTION 42 ONLY) A56 670-8431-02 8010238 CKT BOARD ASSY :GPIB 80009 670-8431-02
A30
A30 621-0007-00 POWER SUPPLY : 80009 621-0007-00 A56 670-8769-00 8010221 CKT BOARD ASSY :GPIB 80009 670-8769-00
----- ----- (494P OPTION 42 ONLY) A56 ----- ----- (OPTION 08141 ONLY)
A30
A30Al 670-8036-00 8010100 8010153 CKT BOARD ASSY :POWER SUPPLY 80009 670-8036-00 A56 670-8617-DO CKT BOARD ASSY :GPIB 80009 670-8617-00
A30Al 670-8036-01 8010154 CKT BOARD ASSY :POWER SUPPLY 80009 670-8036-01 A56 --- -- (OPTION 12 ONLY)
670-7226-00 CKT BOARD ASSY :FAN DRIVE 80009 670-7226-DO A56 670-8618-00 CKT BOARD ASSY,GPIB 80009 670-8618-00
A30A2
A56 ---- ----- (OPTION 13 ONLY)
REV OCT 1984 REV OCT 1984 9-5
9-4
Replaceable Electrical Parts-4941494P Service Vol . 2 Replaceable Electrical Parts-494/494P Service Vol . 2
Tektronix Serial/Model No . Mfr Tektronix Serial/Model No . Mfr
Component No . Part No . Eff Dscont Name & Description Code Mfr Part Number Compon e nt No . Part No . Efi Dscont Name & Description Code Mfr Part Number
A56 670-8619-00 CKT BOARD ASSY :GPIB 80009 670-8619-00 A16A1 670-5540-00 CKT BOARD ASSY1ST L 0 INTERFACE 80009 670-5540-00
A56 ----- ----- (OPTION 14 ONLY) A16A1C1012 290-0326-02 CAP.,FXD,ELCTLT:820UF,10%,6V 56289 109DB27X9006F2
A56A1 670-7916-00 8010100 8010033 CKT BOARD ASSY :GPIB EXTENDER 80009 670-7916-00 A16A1C1014 290-0326-02 CAP,,FXD,ELCTLT;820UF,10%,6V 56289 109D827X9006F2
A56A1 670-7916-01 8010034 CKT BOARD ASSY :GPIB EXTENDER 60009 670-7916-01 A16A1C1016 290-0529-00 CAP., FXD,ELCTLT:47UF,20%,20V 05397 T362C476MO20AS
A56 670-7895-00 CKT BOARD ASSY :PROCESSOR 80009 670-7895-00 A16AIJ1013 131-0608-00 TERMINAL,PIN :0,365 L X 0.025 PH BRZ GOLD 22526 48283-036
A60 670-5555-03 8010100 8010152 CKT BOARD ASSY :DIGITAL STORAGE INTFC 80009 670-5555-03 A16A1J1017 131-0608-00 TERM IN AL,PIN :0,365 L X 0.025 PH BRZ GOLD 22526 48283-036
A60 670-5555-04 8010153 CKT BOARD ASSY :DIGITAL STORAGE INTFC 80009 670-5555-04 A16A1K1015 148-0076-OD RELAY,REEDA FORM A,5V,0,25A,100V 95348 F81-1447
A61 670-5554-03 CKT BOARD ASSY :DIGITAL STORAGE 80009 670-5554-03 A16A1L1011 138-0205-OD COIL.RF :1MH 76493 8209
A62 670-8008-01 CKT BOARD ASSY :LOG AMP 80009 670-8008-01 AI6A1VR1010 152-0590-00 SEMICOND DEVICE :ZENER,18V,5% AT 7MA 04713 SZG35014K2
A64 670-8083-00 CKT BOARD ASSY :DEFLECTION AMP 80009 670-8083-00 A16A1VR1018 152-0304-00 SEMICOND DEVICE :ZENER,0 .4W,20V,5% 15238 25411
A66 670-7902-00 CKT BOARD ASSY :CRT READOUT 80009 670-7902-00 A15A1VR1019 152-0304-00 SEMICOND DEVICE :ZENER .0 .4W,20V,5% 15238 25411
A68 644-0368-01 VAR RESOLN MDL: 80009 644-0368-01
A68AI 670-5536-03 CKT BOARD ASSY :#2 VR MOTHER 80009 670-5536-03
A68A2 670-2118-DO CKT BOARD ASSY :2ND FILTER SELECT 60009 670-2118-00 A18 119-1096-02 SEC CONV ASSY : 80009 119-1096-02
A68A3 670-5533-03 CKT BOARD ASSY :BAND LEVELING B0009 670-5533-03 A18C181 281-0697-00 CAP.,FXD,CER DI :5000PF,+100-0%,10OV 80009 281-0697-DO
A68A4 670-7897-00 CKT BOARD ASSY :POST VR AMP 80009 670-7897-00 A18C182 281-0697 .00 CAP.,FXD,CER DI :5000PF,+100-0%,1D0V 80009 281-0697-DO
A69 644-0368-01 VAR RESOLN MDL: 80009 644-0368-01 AIBC183 281-0697-00 CAP,FXD,OER DI :5000PF,+100-0%,100V 80009 281 .0697-00
A69A1 670-5528-02 CKT BOARD ASSY :#1 VR MOTHER 80009 670-5528-02 A18W140 175-2199-00 CABLE ASSY .RF,50 OHM COAX,13.04 INCH LONG 80009 175-2199-00
A69A2 670-5529-01 CKT BOARD ASSY ;VR INPUT B0009 670-5529-01 A18W222 175-3849-01 CABLE ASSY,RF:80 OHM COAX,4 .85 L 80009 175-3849-01
A69A3 670-8063-00 CKT BOARD ASSY :1ST FILTER SELECT 80009 670-8063-00
A69A4 670-8321-00 CKT BOARD ASSY :10D13 GAIN STEPS 80009 670-8321-00
A69A5 670-5532-03 CKT BOARD ASSY :20DB GAIN STEPS 80009 670-5532-03 A18A1 ----- ----- CKT BOARD ASSY :2ND CONVERTER
A70 670-7919-00 8010100 8010149 CKT BOARD ASSY :Z AXIS 80009 670-7919-00 A18A1 ----- ----- (PART OF Al 8)
A70 670-7919-01 6010150 8010199 CKT BOARD ASSY :Z AXIS 80009 670-7919-01 A18A1C1011 290-0574-00 CAP.,FXD,ELCTLT :47UF,10◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo