OPERATING AND SERVICE MANUAL
Contents
1. Section I Model 465A Table 1 1 Figure 1 1 Hewlett Packard Model 465A Amplifier Specifications Voltage Gain 20 dB X10 or 40 dB X100 open circuit Gain Accuracy 0 1 dB 21 at 1000 Hz Frequency Response 0 1 dB 100 Hz to 50 kHz lt 2 dB down at 5 Hz and 1 MHz Output gt 10 volts rms open circuit gt 5 volts rms into 50 ohms 1 2 W Distortion lt 1 10 Hz to 100 kHz lt 2 5 Hz to 10 Hz and 100 kHz to 1 MHz Input Impedance 10 shunted by lt 20 pF Output Impedance 50 ohms Noise lt 25 rms referred to input with 1 MQ source resistance Temperature Range 0 to 500 Power 115 or 230 V 10 50 to 400 Hz 10 watts at full load Weight Net 4 1bs 1 8 kg Shipping 6 lbs 2 7 kg i Dimensions 1 3 module 5 4 8 wide 3 14 32 high 11 deep 130x87x279 min MEETS EE CEE ITO e Model 465A SectionI SECTION 1 GENERAL INFORMATION 1 1 DESCRIPTION 1 2 The Hewlett Packard Model 465A Amplifier is a general purpose amplifier and impedance converter 10 megohms to 50 ohms This amplifier has select able gain of 20 dB or 40 dB stable over a continuous frequency range of 5 Hz to 1 MHz 1 3 The Model 465A Amplifier pro2. Corp Rochester N Y Seml Conductor Dept Youngwood Pa 09353 C amp Conponeals Inc Newton Mass 00237 Cenco Inc Daalsison Cona 05347 San Mateo Calif 09569 Mallory Baltery Co of 00334 Hunidial Coltoa Call 05397 le Corp Elect Div Canada Ltd Totonto Ontarlo Canada 09348 Microtron Co Ine Valley Stean New York N Y 09922 Burady Corp Norwalk Cona 00313 Garlock tac Cherry 05574 Viking Ind lac Canoga Park 1024 General Transistor Westera Corp 1 00556 Aerovor Corp New Bedford Mass 05593 1 Etectro Plastics fac Sunnyvale Calif Los Angeles 00273 tac Hartisbutg Pa 05616 Cosmo Plastic 10441 Berkeley Calif 00781 Altcealt Radlo Corp Boonton N c o Electrica Spec Co Cleveland Ohio 10646 Carboruadum Co Niagara Falls 00815 Northern Engiaentiog Laboratories Inc 05624 Barber Colman Rockford Ill 11236 CTS of Berae In Berne Ind Burllagtoa Wis 05728 Tiffen Optical Co 11237 Chicago Telephone of Califorala Inc 00853 Sangano Electric Co Pickens Div Rosiya Heights Losg Island N Y So Pasadena Pickens 5 6 05723 Metco Tel Westbury N Y 11242 Bay State Electrontes Corp Waltham Mass 00866 Gos Engineering Co City of Industry Cat 05783 Stewart Eogineesing Co Santa Cruz Calif 11312 Teledyne lac Microwavo Div Palo Alto Calif 00891 Carl E Holmes Corp Los Angeles Calif 05820 Wakefield Eaglaeer
3. adena Calif Phitadelphia Pa 7 77342 American Machine amp Foundry Co tes amp Brumfiold Div Princeton Ind 77630 Electionie Componeats Div 71638 General Instrument Corp Rectifier DI Brooklyn N Y 77764 Resistance Products Ha 11969 Rubbercraft Corp of Callf Calli 78189 Shakeproot Divistoa of 1101 Toot Works 18277 Signa 78283 Signa Indicator Corp 18790 Sttuthers Donn tac 78424 Speciality Leather Prod Co 78452 Thompson Bremer amp Co 28471 Tilley Mfg Co 78488 Stackpole Carbon Co So Bral 78493 Standard Thomson Corp Wallhan Mass 28553 Finnerman Products Inc Clevetaad Ohlo 78790 Traastoraer Engineers San Gabriel Calif 76947 Uciaite Co Newtonville Mass 79136 Waldes Kohinoor Inc Long Istan 79142 Veeder Root Inc Ha 79251 Weaco Mfg Co 19727 Contineatal Wirt Electrosles Corp Philadetphia Pa 79963 Zietick Mfg Corp New Rei 80031 Mepco Divisloa of Sessions Clock Co Mort 80120 Schnitzer Alloy Products Co Ett 0131 Electronic Industries Association Any brand Tube meeting Standards Washin 80207 Uninax Switch Div Maxon Electronics Corp Walliogford Cona New York N Y 80223 United Transformer Corp 80248 Oxford Eleclilc Corp 80294 Bouras jac 80411 Acro Div of Robertshaw Controls Cel Fron FSC Handbook Supplements Camden NJ New York N Y Newark J San Fradelsco
4. OPERATING AND SERVICE MANUAL HP PART NO 00465 90002 MODEL 465A AMPLIFIER SERIALS PREFIXED 530 Copyright Hewlett Packard Company 1965 Printed AUG 1969 Model 465A Table of Contents TABLE OF CONTENTS Section Section Page I GENERAL DESCRIPTION 5 1 1 1 Description 5 1 Introduction 5 1 1 5 Instrument Identification 5 3 Test Equipment Required 5 1 5 5 Performance Checks 5 1 Section Page 5 7 Accuracy and Gain Check 5 1 u INSTALLATION 2 1 5 8 Frequency Response Check 5 1 2 1 Introduction s s s 2 1 5 9 Input Impedance Check 5 2 2 3 Initial Inspection 2 1 5 10 Output Impedance Check 5 2 2 5 Power Requirements 2 1 5 11 Distortion Check 5 2 2 7 Grounding Requirements 2 1 5 12 Noise 5 4 2 10 Installation 2 1 5 13 Adjustment and Calibration 2 12 Rack Mounting 2 1 Procedures 5 4 2 14 Combination Mounting 2 1 5 15 45 V Adjustment R32 5 4 2 16 Repackaging For Shipment 2 1 5 16 Bias Adjustment R15 5 4 5 17 1 kHz Gain Adjust R3 and R38 5 4 Section Page 5 18 1 MHz Adjust 5 5 4 OPERATING INSTRUCTIONS 3 1 5 19 Servicing Etched Circuit Board 5 4 3 1 3 1 5 22 Troubleshooting Technique 5 5 3 4 Descri
5. Goshen Ind Code Mo Henufacturer 73899 Electronles Corp Brooklya 73905 Jennings Radio Mfg Corp San Jose Calitics 13357 Gtoov Pin Corp Ridgefleld 74276 Signatite Inc Weptouo 74455 J H Wians and Sons 14861 Jadusttial Condenser Corp 24858 R F Products Division of Aupheacl Borg Danbury Conn Waseca Philadelphia Electrooles Carp 74970 Johnson Co 75042 faternational Resistance Co 15263 Keystone Carbon Co lac 75378 CTS Knights lac 15382 Electric Corporation 75818 Lenz Electric Mfg 75915 Lilllefuse lac Des 76005 Lord Nig Co 76210 C W Marwedel 16493 J 76539 Cinch Monadnock Div of United Cari 76545 Mueller Electric Co Sandwich Mt Vernon San Francisco Calf 76433 General Instrument Corp Micamold Division Newatk N J 76487 James Millen Mfg Co Inc Malden Mass Miller Co Los Angeles Calif Winchester Mass fi Chicago IES 1 Chicago Mo 25 Plalaos 11 Erle Pa Gievafand Ohlo gt Fastener Corp San Leandro 76703 National Union 76854 Oak Manufacturing Co Crys 27068 The Bendix Corp Electrodynamics Div Hollywood Callf San Francisco Catil 71075 Pacltic Metals Co 71221 Phanostran fastroment and Electronic South Pas 71252 Philadelphia Steel and Wire Corp Newark N J tal Lake
6. St Marys Riverside Calif Elgin latreo Mass Plinan NJ Chicago fil A CRESS EON d Cily N Y itford Conn Chicago 1 chello Istowa N J zahetb N J glon 00 Chicago lumbus Ohio Model 465A Appendix A CODE LIST OF MANUFACTURERS Continued Code Cod Hanvfocturer Address Mo Menofacturer Address No Manufacturer Address 80886 Star Products Inc Dellance Ohio 85684 Radio Corp of Acerlea Electronic 95566 Arnold Engineering Co Marengo 30509 Avery Label Monrovia Calli Comp amp Devices Div 8 3 95712 Dage Electric Co lac Franklin 194 x 0583 Haumarluad Co Inc Mars HIN 85928 Seasiton Mig Co Glendale Call 95984 Siemon Co Wayne M 54 0640 Stevens Amoid Co lnc Boston Mass 87034 Marco Industries Anahela Calif 95987 Weckesset Co Chicago Ill 30813 Disco Gray Co Dayton Ohlo 87216 Philco Corporation Lansdale Division 36067 Microwave Assoc West ine Sunnyvale Call 1030 International Instruments fac Orange Conn Laasdale 96095 Hi Q Div of Aerovox Corp Olean
7. FI 9 2 AMPLIFIER POWER SUPPLY ASSEMBLY 60465 66501 En la mi 19 e id 554 0 467 COPYRIGHT 1965 BY HEWLETT PACKARD COMPANY Ha CRS Model 465A Section V Dome cis 1600 R27 4700 5 9 qu i t 208 L 45 n 1 i R29 t45V ADJ 1 1 1 4 gt 1 1 1 Figure 5 5 Amplifier Schematic 5 1 5 8 Model 4654 INTRODUCTION 6 1 6 2 This section contains information for ordering replacement parts Table 6 1 lists parts in alpha numerical order of their reference designators and indicates the description hp part number of each part together with any applicable notes and provides the followirig a Total quantity used in the instrument TQ column The total quantity of a part is given the first time the part number appears b Description of the part See list of abbrev iations below c Typical manufacturer of the part in a five digit code See Appendix A for list of manufacturers d Manufacturer s part number A assembly fuse B motor F
8. 1901 0025 1901 0158 1902 0040 1855 0004 1854 0033 1854 0302 1854 0039 1853 0051 1850 0128 R R R R R 0687 4721 0687 1031 0688 1025 0757 0992 0698 3186 R R R R R 0698 3187 0687 1031 0687 1061 0687 2231 0687 3921 0687 6821 0687 1531 0687 4721 2100 0094 0886 8235 R R R Ri Board Etched Circuit Assembly Power Supply Amplifier includes Diode Diode Diode TSTR TSTR Si NPN 2N3391 TSTR Si NPN 2N3405 TSTR TSTR TSTR C1 thru C24 CR thru CR6 Q1 thru Q8 Ri thru R38 fxd my die 0 047 pF 210 400 vdew fxd Al elect 50 pF 100 10 25 vdew fxd Ta 3 3 pF 420 35 fxd Al elect 10 var cer 8 50 pF fxd molded mica 56 pF 10 Not assigned fxd Ta elect 3 9 10 35 fxd elect 10 pF 100 10 25 vdew fxd cer die 0 1 80 20 50 vdow fxd Al elect 2900 pF 75 10 3 vdew fxd elect 35 100 10 6 vdew cer die 0 1 Kr 80 20 50 vdew fxd Al elect 75 10 fxd Al elect 1000 pF 100 10 30 fxd Al elect 80 pF 75 Not assigned fxd 100 pF 100 10 160 fxd cer die 0 1 pF 80 20 50 vdew fxd Al elect 100 10 fxd my die 0 1 pF 420 600 cer 0 0068 pF 2 1000 vdew Si 100 wiv 12 pF 100 ma Si 200 piv breakdown 400 mW P channel Si NPN 2N3053 S
9. 018 Co Newark N J 07263 Falrchil Camera amp last Corp 14298 Components lac Conshohocken EH 03508 G E Semiconductor Prod Syracuse N Y Sentcondactor Div Mountain View Calif 14433 ITT Semiconductor A Div of tal Telephone 03705 Apex Machine amp Tool Co Dayton Ohio 07322 Minnesota Rubber Co Minaeapolis amp Telegraph Corp West Palm Beach Fla 03797 Eldena Corp Compton Cath 0738 Bittcher Corp The Monterey Park Call 14493 Hewlett Packard Company Loveland Colo t 03818 Parker Seal Co Los Angeles Calif 07397 Sylvania Elect Prod inc Mt View Operations 14655 Cornell Doblter Electric Corp Newark N 03877 Transticon Electric Corp Wakefleld Mass Mountain View Catit 14674 Coralag Glass Forks Cotnlag M Y 03888 Pytolilm Resistor Co lnc Cedar Knolls N J 07709 Techalcal Wire Products Inc Cranford NJ 14752 Electro Cube Inc San Gabriel Calf 03954 Singer Co Diehl Div 07829 Bodine Elect Co Chicago Ill 14950 Williams Co San Jose Callf Fiadetae Plast Synetvllle N J 07910 Coatiaental Device Corp Hawthorne Calif 15203 Webster Electrontes Co Neg York N Y 04009 Arrow Hart and Hegenaa Elec Co 01533 Raytheon Co 1528 Scioales Corp Northridge Hartford Cona Semiconductor Div Movatain View Calif 15291 Adjustable Bushing Co N Hollywood Calif 04013 Corp LambertviHe J 07980 Hewlelt Packar Co Boonton Di
10. Figure 5 5 for typical de voltage levels 5 6 c5 IMHz ADJ Model 465A 465 1159 55 co R32 45V ADJ RIS BIAS ADJ Figure 5 4 Top View R30 R37 CR6 R34 R29 R33 CI9 R35 465A B 1158 Al hp Part No 00465 66501 SCHEMATIC NOTES 1 PARTIAL RRFERENCE DESIGNATIONS ARE SHOWN PREFIX WITH ASSEMBLY OR SUBASSEMBLY DESIGNATION S OR BOTH FOR COMPLETE DESIGNATION COMPONENT VALUES ARE SHOWN AS FOLLOWS UNLESS OTHER WISE NOTED RESISTANCE IN OHMS CAPACITANCE IN MICROFARADS INDUCTANCE IN MICROHENRYS Jb DENOTES CHASSIS GROUND shy DENOTES CIRCUIT COMMON DENOTES ASSEMBLY DENOTES MAIN SIGNAL PATH DENOTES FEEDBACK PATH J DENOTES FRONT PANEL MARKING CIA DENOTES REAR PANEL MARKING DENOTES SCREWDRIVER ADJUST AVERAGE VALVE SHOWN OPTIMUM VALUE SELECTED AT 4 INPUT 1 DRNOTES COMPONENTS NOT MOUNTED ON ASSEMBLY 914 DENIS WIRE COLOR COLOR CODE SAME AS RESISTOR COLOR CODE FIRST NUMBER IDENTIFIES BASE COLOR SECOND NUMBER IDENTIFIES WIDER STRIP THIRD NUMBER IDENTIFIES NARROWER STRIP eg 924 WHITE RED YELLOW S8 230V
11. R32 for proper reading 5 16 BIAS ADJUSTMENT R15 a Use a DC Voltmeter hp Model 3440A 3445A for this adjustment and set the RANGE to 100 b Connect the positive lead to side of C15 and the common lead to circuit ground DC Voltmeter should read 23 0 0 5 V c If not adjust R15 for proper reading 5 17 1KHZ GAIN ADJUST R3 and R38 The1kHz gain is adjusted by selecting afixed value for resistors R3 and R8 as outlined in the following steps Component ew norma high 6800 2 KQ 6 8 KQ 10 20 KQ b Connect Test Oscillator hp Model 652A to 465A INPUT using ab0Qfeed thru termi nation hp Model 110485 Adjust oscillator output for 1 volt at 1 kHz using the hp Model 741B Differential Volt meter and set 465A to 20 dB position d Connect AC Digital Voltmeter hp Model 3440A 3445A to 466A OUTPUT and select 5 4 a a value of R38 for 10 00 40 05 volts in cation on Digital Voltmeter e Adjust oscillator output for 0 1 volt at 1 Hz kHz using the Model 741B and set 465A to 40 dB position f Select a value of R3 for 10 00 40 05 volt indication on Digital Voltmeter 5 18 1 MHz ADJUST C5 Use Test Oscillator hp Model 6524 and an AC Voltmeter hp Model 331A for this adjustment Set the 465A GAIN to 20 dB b Set the oscillator FREQUENCY to 1 MHz and adjust outputfor 1 0 V verity with voltmete
12. TRY Elect Comp Div 18583 Custis Instrument Inc 18612 Vishay lastraments Inc 18873 DuPoat oad Co 18911 Durant Mfg Co Palo Alto Calif Svanyvale Calif Holliston Mass Des Plalaes ill Mt Kisco N Y Malvern Pa Witmiagloa Del Mifwaukee Vis 19315 The Bendix Corp Navigation amp Coatrol Div Teterboro H J 19500 Thomas A Edison Industrles Div of 19589 Concos 19644 LRC Electroates 19701 Electra Mig Co 20183 General Atronles Corp 21226 Executone Inc 21335 Fafait Bearing Co The 21520 Fansteel Metallurgical Corp 23042 Texscan Corp McGraw Edison Co West Osange H J Baldwin Park Calif Horseheads N Y Independence Kansas Philadelphia Pa Long island City N Y New Coan N Chicago Ill indianapolis tod 23783 British Radio Electronics Lid Washington D C 24455 G E Lamp Division 24655 General Radio Co 24681 Memcor Inc Comp Div 24795 Parelco lac 26365 Giles Corp Mela Park Cleveland Ohio West Concord Mass Huatingtea tad alif K Y San Juan Capistrano New Roche 26462 Grobet File Co of America tnc 26851 Conpac Mollister Co 26992 Hanilton Watch 27251 Speclalities Mfg Co lac 18480 Hewlett Packard Co 28520 Heyman Mfg Carlstadt N J Hollister Calif Lancaster Pa Stratford Cons Palo Allo Calif Keallwosth N J 30817 Instrument Speciallles Co lac 3
13. generation R2 and R7 set the gate voltage for Q1 C2 bypasses any ac on the supply preventing hum injection into Q1 4 9 SECOND AMPLIFICATION STAGE 4 10 The second amplification stage consists of amplifier Q3 and emitter follower Q4 Amplifier Q3 is a common emitter stage When the GAIN switch is on 20 DB Q3 has 20dB of gain Qi and Q3 together give a total of 60 dB gain of which 40dB is used as feedback and 20dB is retained as the closed loop gain When the GAIN switchis on 40 DB C11 shunts R22 giving Q3 40dB of gain The 40dB of feedback is stillused which allows the same gain shaping to be usedinboth GAIN switch positions 20 DB and 40 DB R19 maintainsa charge on C11 in the 20 DB position to eliminate switching transients while changing gain R15 R16 RI7and CRI form the bias voltage divider for Q3 R15 provides bias adjustment and CR1 provides temperature compensation Emitter follower Q4 isolates and drives the complementary symmetry pair Q5 and Q6 4 11 OUTPUT CIRCUITRY 4 12 95 and Q6 operateas complementary symmetry emitter followers CR2 and CR3 forward bias Q5 and Q6 to prevent cross over distortion R24 and R25 determine the idling current flowing through Q5 and Q6 A true 60 ohm output impedance for a proper match to the 50 ohm cable or instrument is provided by R26 C15 is the de blocking capacitor for output R27 keeps the output voltage dt zero volts de 4 13 FEEDBACK CIRCUITRY 4 14 The feedb
14. information and instruc tions necessary for the installation and shipping of the Model 465A Amplifier Included are initial inspection procedures power and grounding requirements in stallation information and instructions for repackaging for shipment 2 3 INITIAL INSPECTION 2 4 This instrument was carefully inspected both mechanically and electrically before shipment It should be physically free of mars or scratches and be in perfect electrical order upon receipt To confirm this the instrument should be inspected for physical damage in transit Also check for supplied access ories and test the electrical performance of the in strument using the procedure outlined in Paragraph 5 5 If there is damage or deficiency see the warranty on the inside front cover of this manual 2 5 POWER REQUIREMENTS 2 6 The Model 465A Amplifier canbe operated from any source of 115 or 230 volts 410 50 1000 Hz With the instrument disconnected from the ac power source move the slide switch located on the rear panel until desired line voltage appears Power dissipation is 10 watts maximum 2 7 GROUNDING REQUIREMENTS 2 8 To protect operating personnel the National Electrical Manufacturers Association NEMA re commends that the instrument panel and cabinet be grounded All Hewlett Packard instruments are equipped with athree pronged conductor cable which when plugged into an appropriate receptacle grounds the instr
15. 174 1251 0175 0360 0042 0757 0059 2190 0007 0380 0058 1251 0173 2470 0001 Figure 5 3 Shielded Load for Residual Noise Check 5 3 Section V 5 13 ADJUSTMENT AND CALIBRATION PROCEDURE 5 14 The following is a complete Adjustment and Calibration Procedure for the hp Model 465A Amp lifier These operations should be conducted only if it has previously been established by the Performance Checks Paragraph 6 5 that the Model 465A is out of adjustment Indiscriminate adjustment of the internal controls to refine readings may actually cause more difficulty If the procedures outlined below do not rectify any discrepancies which may exist and atl connections and settings have been rechecked refer to Paragraph 5 22 Troubleshooting Techniques for possible cause and recommended corrective action 15 45 V ADJUSTMENT R32 a ADC Voltmeter hp Model 34404 34454 will be required for this adjustment Set voltmeter RANGE to 100 b Connect the positive lead to side of C20 and the common lead to circuit ground DC Voltmeter should read 45 1V e If not adjust
16. 3173 6 E Receiving Tube Dept 35434 Lectroha tae Little Falls N J Owensboro Chicago Ill 36196 Stanwyck Coll Products 1 4 Hawkesbury Ontario Canada 36287 Cotninghan 8 Hill Ltd 37942 Mallory amp Co 42190 Mater Co Toronto Ontario Canada Ind 39543 Mechanical adostiles Prod Co Aktoa Ohio 40920 Miniature Precision Bearings inc Keene N H Chicago lil 43990 C A Norgten Co Englewood Colo Skokle 44655 Obmite Mfg Co 45384 Pena Eng amp Mfg Corp 47904 Polaroid Corp 48620 Precision Thesmoneter 8 fast Co 49956 Microwave amp Power Tube Div 52090 Rowaa Controller Co 52983 5 Company 54234 tallcross Mfg Co 55026 Simpsoa Electric 55933 Sonotone Corp Doyleslowa Pa Cambridge Mass Southampton Walthan Mass Festalaster Md Waltham Mass Selma Chicago Etnsford N Y 55928 Raylheon Co Commercial Apparatus amp 86137 Spasiding Fibre Co 106 6289 Sprague Electric Co 9446 Telex Carp 59730 Thomas amp Bells Co 50741 Triplett Electricas fast Co 51775 Union Switth and Signal Div of 00015 So Norwalk Coan Tonawanda N Y Notlh Adans Mass Telsa Okla Elizabeth N J Bluffto ilo Systeas Div Wostinghoase Air Brake Co Pittsburgh 4 Revised April 1959 Code No 2119 63743 54959 65092 66295 56345 70216 70309 1031
17. 344 oper ates only between 50 Hz and 100 kHz so an additional AC Voltmeter hp Model 331A is recommended for the 10 Hz and 1 MHz checks a AC DC DIGITAL VOLTMETER RANGE UNIT hp3440A hp3448A Frequency Response Check 5 1 Section V Oscillator hp Model 652A Frequency Hz hp Model 465 Gain b Set the 465A GAIN to 20 dB and adjust the oscillator to 1 kHz with the amplitude setfor 9 0 volts at the 465A OUTPUT Switch the oscillator to EXPAND function and set the meter to 0 withthe REFERENCE controls d Change the oscillator frequency to 100 Hz and adjust the amplitude controls for 0 in the EXPAND function The voltmeter should read 9 0 4 0 1V Repeat step dfor oscillator frequencies listed in Table 5 2 Use the hp 3314 for the 10 Hz and 1 MHz checks f Reset oscillator frequency to 1 kHz andamp litude to 9 0 V when switching GAIN to 40 dB Adjust reference to 0 withthe REFERENCE controls Repeat the above cheeks for the frequencies listed in Table 5 2 5 9 INPUT IMPEDANCE CHECK a Use the test arrangement shown in Figure 6 1 Set the 465A GAIN to 20 dB b Set
18. 8 10417 70485 70563 70674 70303 70398 71002 71034 nen 71218 71279 71286 71313 71400 71436 71447 71450 71468 11482 71590 21616 74707 71785 71984 72135 12619 72656 12699 12165 12825 72328 72962 72364 12982 73081 13076 73138 73293 nus 23506 13559 73585 73682 nn 73743 13193 73846 Monufacturer Address Universa Electric Ward Leonatd Electric Co Western Electric Co Inc Weston tast Inc Weslon Newark Newark Wittek Mfg Co Chicago III Mianesota Mining amp Mig Co Revere Div St Paol Mina Hartford New York Owosso Mich Ml Vernon Now York N Y Altea Mfg Co Aliled Control Allaetal Screw Product Co Inc Garden Cily N Y Detroit Mich Chicago Ill Unloa City N J Minneapolis Misa Chicago Clevelzad Ohlo New York Anplex Div of Chrysler Corp Atlantic ladia Rubber Works lac Anperite Co lat ADC Products ac Belden Wig Co Bird Electronic Corp Bitnbach Radio Co Gilley Electric Co lac Erle Pa Boston Gear Works Dlv of Murray Co of Texas Quincy Mass Bud Radio Jac Cambridge Thesmfonies Corp Canloc Fastener Corp Cardwell Condenser Corp Willoughby Ohio Cambridge Mass Paranos N J Lindenkurst LIL Bussmann Div of MeGiaw Edison Co St Lovis Mo Chicago Condenser Corp Chicago 111 Callf Spring Co inc Pico Rive
19. Brooklyn N Y 04796 Sequola Wite Co Redwood Calif Lowell Mass 16758 Dalco Radio Div of G M Corp Kokoma tnd 04811 Precision Coil Spring Co Et Moate 98805 General Electric Co Minist Lanp Dept 17103 Thermoneties Inc Canoga Park 04870 Motor Company Westchester lil Cleveland Ohlo 17474 Trasex Company Mountala View Calif 04319 Component Mfg Service 08984 Mel Ra a Jadlanapolis Ind 17554 Components lac Biedetord Bridgewater Mass 03026 Babcock Relays Div Costa Mesa 17675 Hanlin Metal Products Corp Akron Ohlo 3 05006 Twentieth Century Plastics lac 03134 Texas Capacitor Co Houstoa Texas 17745 Aagstrohn Prec ine Ho Hollywood Calif E Los Angeles Lalit a 00015 47 a Revised 1559 FSC Handbook Supplements TE Appendix A Code No 17870 MeGraw Edisoa Co 18042 Power Design Pacific fac CODE LIST OF MANUFACTURERS Continued Manufacturer Address Manchester Palo Alto Calif 18083 Clevite Corp Semiconductor Div 18324 Signetics Corp 18476 Ty Car Mfg Co Inc 18486
20. DSi 2140 0015 1 Lamp glow obd Fi 2110 0017 1 Fuse cartridge 0 15 amp 3AG TL 15 100 2110 0040 1 Fuse 0 062A SB for 230 V only 3AG TL 15 100 Li and 12 9140 0029 2 Coil 3100 15 101 Q1 thru 08 Not assigned 99 t 1850 0098 1 TSTR Ge PNP B 1493 Ri thru R26 Not assigned R27 0687 4721 R fxd comp 47000 10 1 2 W EB 4721 R28 0684 3331 R fxd comp 33 10 1 4 W CB 3331 3101 0037 1 Switch toggle SPST 3 amp 80350 A 52 3101 0033 1 Switch slide DPDT G 326 53 3101 0038 1 Switch toggle DPDT 3 amp 83054 B i i Ti 9100 1324 1 Transformer power 1 wi 8120 0078 1 Cable assembly power black extra limp KH 4147 1 7 5 ft long MISCELLANEOUS 0340 0099 1 Insulator grey plastic 0340 0100 1 Insulator grey plastic 0510 0888 1 Clamp cradle i 6214 1 AN 1200 0043 1 Insulator 293011 1200 0081 1 Insulator bushing nylon 974 5 1205 0611 1 Heat dissipator transistor TXBF 032 025B 1205 0050 1 Heat sink 9017 1861 8 3 li 4 Section VI REFERENCE hp DESIGNATOR PART NO 1251 0148 1400 0084 1490 0031 1510 0010 1510 0011 5000 0700 5000 0711 5020 0700 5040 0234 5040 0235 5040 0700 5060 0700 5060 0709 5060 0727 5060 4916 00465 00101 00465 00102 00465 00201 00465 00203 00465 01201 00465 90002 Table 6 1 Replaceable Parts Cont d DESCRIPTION 1 Connector ac powe
21. Div 12697 Clarostat Mfg Dover 01930 Ametock Corp Rockford Ill Van Ruys Calli 12728 Elmar Filter Corp W Haven Conn 01361 Pulse Engineering Co Santa Clara Calif 06980 Vartan Assoc Elmac Div San Carlos Calif 12859 Nippon Electric Co Ltd Tokyo Japan 02114 Fercoxcube Corp of America Saugertlos N Y 07088 Kelvin Electric Co Van Nuys Calif 12881 Metex Electronles Corp Clark NJ 02116 Wheelock Sigaals Inc Long Branch N J 07126 Digitras Co Pasadena 12930 Delta Semiconductor Inc Newport Beach 02286 Cole Rubber aad Plastics Inc Sunayvalo 07137 Transistor Electronics Corp Mianeapolis 12954 Dicksos Electronics Corp Scoltsdate Arizona i 02660 Amghenot Borg Electronics Corp Broadview ill 07138 Westinghouse Electric Corp 13103 Thermolloy Dallas Texas 1 02735 Radio Corp ol Senicondactot Electronic Tube Div Elmita N Y 13396 Telefunken GmbH Hanover Germany aad Materials Div Somerville J 07149 Corp Now York N Y 13835 Nidtand Weight Div of Paci le Induslries Inc 02771 Co of America inc 07233 Cinch Graphik Co City of industry Calif Kansas Clty Kansas Old Saybrook Conn 07256 Silicon Transistor Corp Carte Place 14099 en Tech Newbury Park Calll 02777 Hopkins Engineering Co San Fernando Calif 07261 Avnet Corp Colver City Calif 14193 Calif Resistor Corp Santa Monica Calif E 24 02875 Hudson Tool 8
22. L filter ballery heator capacitor 1c integrated circuit CR diodo 3 jack DL _ d lay tine K relay DS lamp L Inductor E misc electronte part M meter Dupont de Nemours Section VI SECTION VI REPLACEABLE PARTS 6 8 Miscellaneous parts are listed at the end of Table 6 1 6 4 ORDERING INFORMATION 6 5 To obtain replacement parts address order or inquiry to your local Hewlett Packard Field Office see lists at rear of this manual for addresses Iden tify parts by their Hewlett Packard part numbers 6 6 NON LISTED PARTS 6 7 To obtain a part that is not listed include a Instrument model number b Instrument serial number Description of the part d Function and location of the part DESIGNATORS TC thermocovplo Y vacuum tube neon bulb photocell eto bie thermistor switch transformer 2 ABBREVIATIONS Ag allver m inside diameter ns nanosecond s 109 slide Al aluminum impg impregnated seconds SPDT single pote double A ampere 8 ined incandescent nsr not separately replace throw Au gold ins insulation ed able SPST singlo polo single throw cagacitor 3 2 cap ceramio lacci one tantalum coet coefficient kHz kilohertz 1089 hertz ea ote aio TC temperature coefficient com common TiO dioxide comp co
23. Meter Resistor Accuracy 0 2 at 1 volt Range Frequency 1 kHz hp Model 741B AC A Volimeter Troubleshooting hp Model 130C Oscilloscope Frequency 2 kHz Vertical Sensitivity 10 mV em Voltage Output 45 V Troubleshooting hp Model 6220B Current Limit 75 mA DC Power Supply Performance Checks hp 11048B hp Part No 0757 0059 hp Part No 0727 0023 See Figure 5 3 509 Feed Thru Termination 1 1 2W 502 1 1 2 W 1 MQ Shielded Load 5 0 Model 4654 Section V SECTION V MAINTENANCE 1 5 1 INTRODUCTION 5 2 This section contains information necessary for the proper maintenance of the hp Model 465A Amplifier This sectionprovidesthe necessary Per formance Checks Adjustment and Calibration Pro cedures and Troubleshooting Techniques required to accomplish the above objective Page 5 4ais included to record the results of the Performance Checks 5 3 TEST EQUIPMENT REQUIRED 5 4 The test equipment required to perform the operations outlined inthis section is listed in Table 5 1 This table describes the type of instrument required critical specifications type of operation to be con ducted and the recommended model If the specific model recommended is not available equipment which meets or exceeds the critical specifications listed may be substituted 5 5 PERFORMANCE CHECKS 5 6 The Per
24. N J 94310 Wire Cloth Prodacts lac Beliwood 111 81171 Arco Electronics tac Great Neck N Y 94375 Automatic Metal Products Brooklya E 84395 A J Glesener Co tac San Francisco Calif 94682 Worcester Pressed Aluminun Corp 0000F Malco Tool and Die Los Aageles Calif 84411 TRY Capacitor Div Ogallala Neb Worcester Mass 00007 Willow Leather Products Corp NL 4970 Sarkes Tarzian Iac Blooningtoa ind 94695 Magnecrafi Electtic Co Chicago 85454 Boonton Nolding Company Boonton 3 95023 George A Philbrick Researchers Inc i 00048 ETA England 5 5421 Boyd Co San Fiancisco Callf Boston Mass 00088 Precision Instrumeat Components Co d 3 35474 Bracamonte amp Co San Francisco Calif 95236 Allies Products Corp Daala Fla Nuys Calif A 85660 Koiled Kords fne Handen Conn 95238 Continental Connector Corp Woodside 00005 Heslett Packard Co Colorado Springs 8591 Seamless Rubber Chicago 95263 Leecraft Wig Co Inc Long Istand N Y Colorado Springs Colorado 86174 Fafnir Bearing Co Los Angeles 95255 Rational Coil Sheridan Wyo O00MH Rubber Eng Development Hayward Calli 86197 Cliflon Precision Products Co lac 95215 Vitramon loc Bridgeport Coan O00NN N Co Jose Calif Clifton Heights 35348 Gordos Corp Bloontield 00090 Oakland 86579 Precision Ru
25. N Y 1073 Grayhill Co LaGrange 87423 Western Fibrous Glass Prodacls Co 96256 Thotdarson Meissner nc Mt Carmel 11 1095 Triad Transformer Corp Vestes Calif San Francisco 96296 Solar Manufacturing Co Los Angeles 1312 Winchester Elec Div Litloa Ind lac 87664 Van Waters 8 Rogers inc Francisco Calif 36306 Microswitch Div of Minn Honeywell Oakville Conn 37930 Tower Mfg Corp Providence Freeport 1h 81319 Military Specificallon eee ie 88140 Cotler Hanmer Inc Lincoln Ili 96330 Carlton Screw Co Chicago il 81483 fotermatlonal Rectifier Corp Segundo Calif 88220 Gould Nationa Batteries Inc St Paul Mian 96341 Microwave Associates Jac Boslington Mass 81541 Electronics 186 Cacibridge Maryland 88693 Genera Wills lac Bulfalo N Y 96501 Excel Transformer Co Oakland 81850 Barry Controls DIV Barry Wright Corp 8923 Graybar Electric Co Oakland Calif 96733 San Fernando Elect Mfg Watettowa Mass 1903 G E Distributing Corp Schenectady B Y San Fernando Calif 82042 Carter Precision Electric Skokle Ill 89665 United Transformer Co Chicago IN 6881 Thomson Ind inc Long Isa N Y 82047 Faraday lac Copper Hewitt 90030 Uniled Shoe Machinery Corp Beverly Mass 97464 lodustrla Retalalng Ring Co Irvington NI Electric Div Hoboken R J 0179 US Rubber Co Consumer lad amp Plastics 97539 8 Precision Mfg En
26. RFORMANCE CHECK TEST CARD Hewlett Packard Model 465A Tests performed by Amplifier Date Instrument Serial No Description PERFORMANCE CHECKS 1 ACCURACY AND GAIN CHECK 20 dB 40 dB 2 FREQUENCY RESPONSE Gain dB Freq 20 1 kHz 20 10 Hz 20 100 Hz 20 50 kHz 20 1 MHz 40 40 40 1 kHz 10 Hz 100 Hz 40 50 kHz 40 1 MHz 3 INPUT IMPEDANCE Impedance at 100 Hz Impedance at 10 kHz 4 OUTPUT IMPEDANCE 5 DISTORTION Gain dB Freq 20 1 kHz 20 5 Hz 10 Hz 20 20 100 kHz 20 600 kHz 40 1 kHz 40 5 Hz 40 10 Hz 40 40 100 kHz 600 kHz 6 NOISE CHECK 5 4a Model 465A 5 22 TROUBLESHOOTING TECHNIQUE 5 23 This section contains procedures designed to E assist in the isolation of malfunctions These pro cedures are based on systematic analysis of the instrument circuitry These operations should be undertaken only after it has been established that the difficulty cannot be elimina
27. SE 2 15 amp provides instrument pro signal input and circuit common for the tection for 115 volt operation An optional 465A 06 amp fuse provides protection for 230 volt operation OUTPUT banana type connectors provide signal output circuit common and chassis ground for the 465A Removal of the ground AC POWER accepts a 3 wire power cable strap between and th permits with safety ground floating de operation INPUT rear panel BNC connector in par 8 LINE VOLTAGE a two position slide allel with front panel INPUT terminals is switch selects 115 or 230 volt available on special basis operation 8 07 Figure 3 1 Front and Rear Panel Controls Indicators and Connectors iis Ee Model 465A Section SECTION Ili OPERATING INSTRUCTIONS x 3 1 GENERAL 3 2 The Model 465A operation is accomplished by applying the signal to be amplified to the INPUT connectors An input impedance of 10 MQ shunted by lt 20 pF minimizes circuit loading A maximum input signal of 100 mV rms can be applied for 40 dB X100 GAIN and 1 0 V rms can be applied for 20 dB X10 GAIN The required gain 20 dB or 40 dB is selected by the front panel GAIN switch ENSURE THAT TRANSIENTS GREATER THAN 200 VDC OR 25 VDC ARE NOT APPLIED TO THE INPUT OR OUTPUT TERMINALS RESPECTIVELY OTHER WISE DAMAGE TO THE MODEL 465A MAY RESULT 3 3 A maximum output of 10 V rms ca
28. ack circuitry controls the amplifier gain by selecting the amount of voltage division by voltage divider R4 85 and R6 CSprovides phase lead to improve the phase margin around 1MHz C4 and C14 eliminate transients during GAIN switching by preventing dc voltages from being appliedto the divider Stick Negative feedback is applied to field effect transistor Qi and differentially compared with the input which provides improved signal reproduction 4 15 REGULATED POWER SUPPLY 4 16 The regulated power supply provides the 45 volts used by the amplifier A filter circuit formed by 11 L2 C22 and C23 prevents any interference from being fed into the instrument power line Ti CR4 CR5 and C16 form a full wave rectifier Diode CR6 sets a reference voltage for the emitter circuit of 97 This reference voltage is compared t the power supply output by which amplifies the error signal to drive Q8 Transistor Q8 acting as a current amplifier drives series regulator Q9 Q8 also improvesthe gain by isolatingQ7 C19 and R35 provide gain shaping for high frequency stability of the power supply amplifier C18 bootstraps R33 driving it from the output of the regulator This increases the voltage gain of Q7 which improves voltage regulation of the power supply Resistors R30 R31 and R32 provide a divided dc voltage pro portional to the dc outputand close to the reference voltage provided by CR6 This gives 07 its bias and reference s
29. al conditions which should be encountered during the checks 5 26 The checks outlined in Table 5 4 are not designed to measure all circuit parameters rather only to localize the malfunction Therefore it is quite possibie that additional measurements may be required to completely isolate the problem Compo nent values may vary slightly between instruments therefore it should not be necessary to precisely duplicate voltage values described 5 27 The conditions discussed in Table 6 4 are based on the following criteria 1 the side of is removed from circuit opening the feedback loop 2 Model 465A GAIN set to 40 dB and 3 1mV 2kHz signal applied to Model 466A INPUT O Check Q4 Q5 and Q6 Refer to Figure 5 5 for typical de voltage levels Check 01 Q2 and Q3 Refer to Figure 5 5 for typical de voltage levels Disconnect jumper wire at the side of C20 removing power supply from circuit Measure de voltage at the side of C20 Should be 445 1 v If correct proceed to 49 if incorrect go directly to Connect a DC Power Supply hp Model 6220B to the collectors of Q5 and Q6 Connect the high side to the collector of Q5 the low side to the collector of Q6 Adjust the power supply output to 45 v set current limit to 5 ma If power supply indicates current limit check Q4 Q5 Q6 and CR2 3 for short Check Model 465A power supply to include secondary 07 CR6 Q8 and 99 Refer to
30. bber Products Corp Daylca Ohio 95354 Methode Mfg Co Rolling Meadows 00084 Galiforala Eastern Lab Burlington Calif 000 S K Suith Co Los Aogeles Callf 00015 47 _ Revised April 1969 From FSC Handbook Supptenents
31. co Controls Div of Essex Wire Corp 99800 Delevan Electronics Corp East Aurora N Y 93315 Hubbell Corp Mundeseia Mansfield Oblo 99848 Wilco Corporation Indianapolis lad 83324 Rosan lac Newport Beach Calif 93632 Walers Co Culver City Calf 99928 Branson Corp Whippany 8 2 83330 Smith Hernan H lac Brooklya 93929 G V Controls Livingston N J 99934 Renbrandt lac Boston Mass 83332 Tech Labs Palisade s Park 3 94137 General Cable Corp Bayonne N J 99942 Electronics Corp 83385 Cenlral Screw Co Chicago 94142 Phelps Dodge Yonkers Semiconductor Div El Monte Calif 1 83501 Wire and Cable 94144 Raytheon Co Comp Div ind 99957 Technology Instrument Corp of Calif 4 Div of Amerace Brookfield Mass Comp Operallons Quincy Mass Newbury Patk Gallt 1 83594 Burroughs Corp Electronic Div 94148 Scientific Products fac H Ptajatietd K J Loveland Colo 83740 Union Carbide Corp Consumer Prod Div 94154 Wagaer Elect Corp Toag Sol Div THE FOLLOWING HP VENDORS HAVE NO NUMBER New York N Y 94197 Costiss Wright Corp Electroalcs Div ASSIGNED IN TRE LATEST SUPPLEMENT TO THE 83177 Model fag and Mig fac Huatiagion East Paterson N J FEDERAL SUPPLY CODE FOR MANUFACTURERS 3821 Loyd Scroggs Co Festus Mo 94222 South Chester Corp Chester Pa HANDBOOK i 83942 Aeronaotical fast amp Radio Co Lodi
32. del 465A Section VI s Table 6 1 Replaceable Parts Cont d REFERENCE hp DESIGNATOR PART NO re DESCRIPTION MFR MFR PART NO AIRLT 0687 5621 1 R fxd comp 56002 410 1 2 W EB 5621 A1R18 0699 0001 1 fxd comp 2 70 210 1 2 W EB 27G1 1819 A1R20 0687 3321 1 R fxd comp 33002 310 1 2 W EB 3321 1821 0686 3805 1 fxd comp 339 25 1 2 W EB 3305 A1R22 0686 3015 1 R fxd comp 300 25 1 2 W EB 3015 A1R23 0687 1021 1 R fxd comp 10002 10 1 2 W EB 1021 A1R24 AIR25 0699 0003 fxd comp 8 20 10 1 2 W EB 0003 ALR26 0767 0072 1 fxd 49 9 ohms 1 T O obd AIR27 0687 4721 1 fxd comp 47002 10 1 2 W EB 4721 AJR28 0684 3331 1 fxd comp 33K 10 1 4 W CB 3331 A1R29 0687 1231 1 fxd comp 12 410 1 2 W EB 1231 A1R30 0698 3341 1 fxd prec met fim 19102 21 1 2 W CEC T O obd AIR31 0698 3411 1 R fxd prec met 34802 1 1 2 W CEC T O A1R32 2100 0090 1 var comp 20002 430 1 3 W UPM TORE A1R33 0687 3921 fxd comp 33002 10 1 2 W EB 3921 1836 0687 1811 1 fxd comp 1802 10 1 2 W EB 1811 A1R36 0687 1031 fxd comp 10 10 1 2 W EB 1031 A1R37 0690 1001 1 fxd comp 100 10 1 W GB 1001 BH A1R38 0686 1036 1 fxd comp 10 25 1 2 W GB 1035 i C1 thru C14 1 Not assigned C15 0180 0378 1 C fxd Al elect 1000 gF 100 10 30 34D108H030JP41 C16 thru C21 Not assigned C22 and C23 0150 0097 C fxd cer 0 0068 pF 32 1000 vdew B
33. e 4 3 GENERAL CIRCUIT DESCRIPTION 4 4 Figure 4 1 shows the block diagram for the 465A Amplifier Each amplifier stage Q1 and Q3 is followed by an emitter follower Q2 and Q4 toprevent loading of the amplifiers The complementary symmetry pair 05 and Q6 provide power gain and low output impedance Overall feedback taken from the output and applied differentially to the initial amplifi cation stage decreases distortionand increases gain accuracy Resistive voltage divider R4 R5 and R6 changes the amount of feedback to obtain 20 or 40 dB gain as selected by the GAIN switch on the front panel The regulated power supply provides a con stant 45 volts to all amplifier circuits 4 5 DETAILED CIRCUIT DESCRIPTION 4 6 Refer to Figure 5 5 for the schematic diagram of the Model 465A Amplifier 4 1 FIRST AMPLIFICATION STAGE 4 8 The first amplification stage comprises field effect transistor 91 and emitter follower Q2 Qi provides high input impedance and low input noise Emitter follower Q2 provides isolation while driving the second amplification stage Q2 also bootstraps Qi load resistor R10 This permits the field effect transistor to have a gain of approximately 40 dB while operating at an optimum current for noise from a 45 volt power supply C6 and R12 stabilize the overall gain R13 and C9 allow Q2 to operate asan emitter follower with reduced operating voltage to lower the power dissipation and the noise
34. e co sect section s bor assigned selected second efficient si silicon or special type Section VI REFERENCE DESIGNATOR Al AICI A1C2 A103 A1C4 A1C5 A1C6 A1C7 A1C8 1 9 Table 6 1 Replaceable Parts Cont d hp PART NO 00465 66501 1 0170 0060 0180 0105 0180 0161 0180 0284 0130 0017 0140 0014 0180 0022 0180 0059 0160 0084 1 11 A1C12 A1C13 1 14 1 16 1 16 A1C18 A1C19 1 20 A1C21 A1C22 thru A1C24 A1CR thru A1CRA A1CR5 A1CR6 192 193 104 195 196 108 AIRI A1R2 AIR3 AIR4 AIRS AIR6 AiR A1R8 189 AiR10 AIRI1 1812 AiR13 ATRIA AIRI5 AIR16 0180 1792 0180 0064 0150 0084 0180 0284 0180 0378 0180 0110 0180 0061 0160 0084 0180 0149 0170 0022 0150 0097
35. formance Checks presented in this section arefront panel procedures designed to compare the Model 465A with its published specifications These operations may be incorporated in periodic mainten ance post repair or incoming quality control checks These operations should be conducted before any attempt is made to adjust or calibrate the instrument During these operations the Model 465A power line voltage should be periodically varied 410 A fifteen minute warm up period should be allowed prior to conducting these checks TEST OSCILLATOR AMPLIFIER hp465A DE FEEO THRU 4 TERMINATION 4 4654 01155 Figure 5 1 5 7 5 8 ACCURACY AND GAIN CHECK Figure 5 1 describes the recommended test arrangement A Test Oscillator hp Model 652A and an AC Digital Voltmeter hp Model 3440A 3445A will be required for this check b Set oscillator frequency to 1 kHz and adjust amplitude for 1 00 V rms output Verify with AC Voltmeter Set Model 465A GAIN to 20 dB The AC Voltmeter should read 10 0 0 1 atthe 465A OUTPUT If correct adjust oscillator amp litude for a 1 0 reading at the 465A OUT PUT Switch the 465A GAIN to 40 dB The AC Voltmeter should read 10 0 0 1 e If the 465A does not meet this check perform the adjustments described in Paragraph 5 17 FREQUENCY RESPONSE CHECK Figure 5 1 describes the recommended test arrangement The hp 3440
36. glewood N J 82116 Eleclile Regulator Corp Norwalk Cona Prod Di Passate N J 97979 Reon Resistor Corp Yonkers N Y 82142 Jeffers Etectronies Division of Speer 90970 Bearing Eogineerlag Co Francisco Calif 91983 Lillon System lac Adter Westrex Carbon Co Du Bols 91146 ITT Cannon Elect lac Salen Div Salen Mass Commun Div New Rochella Y 82170 Faltchil Camera amp tnst Corp Space amp Delease 91260 Connor Spring Mfg Co San Francisco Calif 98141 R Troncis inc Jamaica NY System Div N 91345 Miller Dlal amp Naneplate Co El Monte 98159 Rubber Teck Inc Gardena Calif 82203 Maguire 184051065 Inc Greenwich Coin 91418 Radlo Malerlals Co Chicago 10 93220 Hewlett Packard Co Moseley Div 32219 Sylvapia Elecicle Prod fac 91505 Augal Inc Atileboto Mass Pasadeaa Callf Electronic Tubs Division Enporlua Pa 9163 Dale Electrontes Inc Columbus Nebr 98278 Microdot lac So Pasadena A 32376 Astton Corp East Newark Harrison N 91662 Elco Corp Willow Grove Pa 98291 Sealectro Corp Mamaroneck 82389 Switchesalt inc Chleago 31737 Grenar Mig Co lac Wakefield Mass 98376 Zero ule Co Burbank 5 82647 Metals amp Controls fac Spencer Products 91827 K F Development Co Redwood City Calif 98410 Ele Inc Clevelaad Ohto ay N Attieboto Mass 91885 Malco Mfg Co inc Chicago 111 98731 General Mills tac Electronic
37. i PNP 2N4037 Ge PNP 2N398B fxd comp 47002 210 1 2 W fxd comp 10 210 1 2 W fxd comp 10009 45 1 2 W fxd prec met flm 22 19 41 1 2 W fxd prec met fim 2009 1 2 1 2 W fxd prec met flm 20008 1 2 1 2 W fxd comp 10 10 1 2 W fxd comp 10 9 210 1 2 W fxd comp 22 10 1 2 W fxd comp 33009 10 1 2 W fxd comp 68008 10 1 2 W fxd comp 15 10 1 2 W fxd comp 47009 10 1 2 W var comp lin taper 50 230 1 10 W fxd comp 82 5 1 2 W Type 663 UW D34114 150D335X0035 B2 D 38559 557 019 U2PO 34R bU RCM15E560K 150D395X9035 B2 80D106G025BB4 33041 39D298G003GJADSB 80D156G006BB4 33C41 038559 340 040680 41 033191 3001076015004 33041 Type 30D HEW 17 B obd 8710939 224 1112 253391 obd 2N3053 2N4037 2N398B EB 4721 EB 1031 EB 1025 T O obd CEC T O obd 1031 1061 EB 2231 EB 3921 obd EB 6821 EB 1531 EB 4721 UPE TORE EB 8235 4 0 Mo
38. identify ing the owner and indicating the service or repair to be accomplished include the model number and full serial number of the instrument In any correspondence identify the instrument by model number serial number and serial number prefix 2 18 If original container is to be used proceed as follows a Place instrument in original container with appropriate packing material if available A container and packing material can be pur chased from your nearest hp Sales and Service Office b Ensure that the container is well sealed with strong tape or metal bands 2 19 Iforiginalcontainer is not to be used proceed as follows a Wrap instrument in heavy paper or plastic before placing in an inner container b Place packing material around all sides of instrument and protect panel face with card board strips Place instrument and inner container in heavy carton or wooden box and seal with Strong tape or metal bands d Mark shipping container with DELICATE INSTRUMENT FRAGILE etc 2 1 Section Model 465A 465A B 0214A 465A AMPLIFIER HEWLETT PACKARD 40 08 OUTPUT LINE ON switches power voltage on 8 OUTPUT rear panel BNC connector in par indicator glows when line voltage is on allel with front panel OUTPUT terminals is available on special basis GAIN selects 20 or 40 dB gain INPUT banana type connectors provide FU
39. ignal which controls the series regulator C20 provides additional filtering for the 45 volt supply 4 1 Section V Model 465A Table 5 1 Test Equipment Required INSTRUMENT CRITICAL SPECIFICATIONS RECOMMENDED MODEL DC Voltmeter AC Voltmeter Test Oscillator Calibration hp Model 3440A 3445A Digital Voltmeter Accuracy 1 Voltage Range 50 V full scale Accuracy 0 1 Performance hp Model 34404 3445A Frequency Range 100 Hz 50 kHz Checks Digital Voltmeter Accuracy 2 hp Model 331A Frequency Range 10 Hz 1 MHz Distortion Analyzer Voltage Range 0 003 10 V hp Model 652A Test Oscillator Performance Checks Frequency Range 10 Hz 1 MHz Voltage Output 1 0 V Frequency Response Accuracy 0 25 Performance Checks hp Model 200 CD Frequency Range 5 Hz 600 kHz Oscillator Voltage Output 1 0 V at 0 5 Distortion Performance Checks hp Model 331A Distortion Analyzer Distortion Analyzer Frequency Range 5 Hz 600 kHz Sensitivity 0 1 Distortion Voltage Range 103 5 126 5 V rms Performance Superior Electric Output Power 10 watt Checks Company Type UCIMB Variable Voltage Line Transformer AC Differential Calibration Voltmeter Oscilloscope DC Power Supply Ohmmeter Ohms Range 10 MN Troubleshooting hp Model 427A i Multi Function
40. ing Inc Wakefield Mass 11314 National Seat Downey Calif 00929 Microtab Inc Livingston N J 06004 Bassick Co Div of Stewart Warnes Corp 11453 Precision Connector Corp Jamaica N Y 01002 General Electric Co Capacitor Dept Bridgeport Cons 11534 Duncan Electronics fac Gosta Mosa Calif Hudson Falls 06090 Raychem Cosp Redwood City Callf 11711 General lastrumeat Corp Sealconductor 01009 Alden Products Brocktoa Mass 06115 Sassch acd Lond Optical Co Rochester N Y Div Products Group Newark N J 01121 Altea Bradley Co Milwankeo Wis 05402 E T A Products Co of America 11717 tapetial Eleclsonie fac Buena Park Calif 01255 Litton Industries fac Beverly Hills Calif 06540 Asaton Elecitonie Hardware Co Inc 31870 Melabs fac Palo Calif 01231 TRY Semiconductors Inc Lawadale New Rochelle N Y 12040 National Semiconductor Danbury Goan 01295 Texas Instruments Inc 06555 Beede Electrical fastrument Co lac 12136 Philadelphla Handle Co Qanden N J Transistor Products Div Dalias Texas Peaacook N H 12361 Grove Mig Co Inc Shady Grove Pa 01349 The Alliance Mfg Co Alliance 06665 General Devices Co fac Indianapolis Ind 12574 Gulton tad lac Data System Oiv H 01589 Pacific Relays Inc Van Nuys Calif 06751 Componeals Inc Ariz Oly Phoenix Ariz Albuquerque 01670 Gudebdrod Bros SIIK Co New York N Y 06812 Torringion Mfg Co West
41. ls Final null will indicate the distortion present Table 5 3 states distortion lt 1 at 1 kHz Repeat the above test at the frequencies listed in Table 5 3 Adjust the oscillator amplitude to obtain a set level of i for each frequency setting The distortion limits are listed in Table 5 3 Switch the 465A GAIN to 40 dBand adjust the oscillator amplitudefor set levelof 1 Repeat this test for the frequencies listed in Table 5 3 ii O un Model 465A Section V WIDE RANGE OSCILLATOR hp200CD DISTORTION ANALYZER AMPLIFIER Figure 5 2 Distortion Check 5 12 NOISE CHECK Table 5 3 Distortion Check 465A Oscillator hp Model Gain hp Model 200CD 3314 a AC Voltmeter hp Model 331A and a 1 MS shielded resistor refer to Figure 5 3 dB Frequency Output Distortion will be required for this check 5 Hz 1 10 Hz 1 b Set the 465A GAIN to 40 dB and the voltmeter i RANGE to 0 003 V 600 kHz 1 5 Hz 0 c Connect the 1 MQ shielded resistor across 10 Hz 0 the 465A INPUT The voltmeter should read 1kHz 0 less than 2 5 mV lt 25 microvolts referred 100 kHz 0 to the input 600 kHz 0 Description 5 Connector male Connector male w insulator Lug terminal 90 Resistor 1 MQ 1 2 w 1 metal film Washer int lock Spacer 6 32 threaded Shield 510 8 0089 Screw bind head 6 32 x 1 4 inches hp Part No 1251 0
42. mposition L inductor conn connection linear taper circuit tog toggle dep deposited log logarithmic taper pe tot tolerance DPDT doubte pole double M suit siot pF picofarad 10712 throw farads DPST double pole single mA miltiampere s 10 ply inverse voltage throw amperes part of vacw lt alternating current MEZ megaheriz 10 hertz position s working voltage elect electrolytic _ megohmxs 10 ohms polystyrene var variablo encap encapsulated met fim metal film pot potentiometer vdew direct current working mfr manufacturer peak to peak voltage 1 F farad s mtg mounting pom parts per millfon FET effect transistor mV mlllivolt 107 volts prec precision temperature watt s fixed 10 coefficient longterm w with gillian arsenid LV microvolt s 1075 volts stably and or tol working inverse voltage GHz gigahertz 10 hertz my Mylar m Md een dana gd guard ed nA rancampere 8 10 R resistor E Ge germantum amperes Rh rhodium pa grd ground ed normally closed rms root mean square utenti Ne neon rot rotary bo omitted K henry tes normaliy open mercury NPO negative positive zero Se selentum no standard type num Hz hertz cycle per zero temperatur
43. n be obtained across the OUTPUT connectors which have 50 ohm impedance Floating operation to 500 Vde can be done by removing the strap between circuit common and chassis ground 3 4 DESCRIPTION OF CONTROLS 3 5 Figure 3 1 describes the front and rear panel controls for the 465A ENSURE THAT COMMON 77 TERMINALS ARE CONNECTED BE FORE INPUT OR OUTPUT TERMI NALS OTHERWISE DAMAGE TO THE MODEL 465A MAY RESULT DUE TO TRANSIENTS 3 1 mered TOPON T P OMSKI Model 465A 5120 8 799 60 NYHL 20 SIRIO Alddf YIMOd 2d 031770933 531535 vo 10 MEMO gom SEINS alan Inara So 1narno Section IV E SAR i i Model 465A SECTION Section IV IV THEORY OF OPERATION 4 1 INTRODUCTION 4 2 The hp Model 465A Amplifier comprises an amplifier section and a power supply section The amplifier section contains two amplifier stages two emitter followers and a complementary symmetry pair The power supply is the series regulated typ
44. ption of Controls 3 1 Section Page Section Page VI REPLACEABLE PARTS 6 1 THEORY OF OPERATION 4 1 6 1 Introduction 6 1 4 1 Introduction 4 1 6 4 Ordering Information 6 1 4 3 General Circuit Description 4 1 6 6 Non Listed Parts 6 1 4 5 Detailed Circuit Description 4 1 4 7 First Amplification Stage 4 1 APPENDIX 4 9 Second Amplification Stage 4 1 A CODE LIST OF MANUFACTURERS 4 11 Output Circuitry 4 1 4 13 Feedback Circuitry 4 1 B SALES AND SERVICE OFFICES 4 15 Regulated Power Supply 4 1 BACKDATING CHANGES LIST OF TABLES Number Page Number Page 1 1 Specifications 1 0 5 3 Distortion Check 5 3 5 1 Test Equipment Required 5 0 5 4 Troubleshooting 5 5 5 2 Frequency Response Test 5 2 6 1 Replaceable 6 2 LIST OF ILLUSTRATIONS Number Page Number Page 1 1 Hewlett Packard Model 465A Amplifier 1 0 5 2 Distortion 5 8 3 1 Front and Rear Panel Controls 5 3 Shielded Load for Residual Noise Check 5 3 Indicators and Connectors 3 0 4 1 Model465A Amplifier Block Diagram 4 0 5 4 Top View o t t n n 5 6 5 1 Frequency Response Check 5 1 5 5 Amplifier Schematic 5 7 5 8
45. r c Adjust C5 for a reading of 8 5 V at the 465A OUTPUT 5 19 SERVICING ETCHED CIRCUIT BOARD 5 20 The hp Model 465A has one etched circuit board Use ca tion when removing it to avoid damaging mounted components The hp part number for the assembly is silk screened on the exterior of the circuit board to identify it Refer to Section V for parts replacement and hp Part number infor mation 5 21 The etched circuit board is a plated through type The electrical connection between sides of the board is made by a layer of metal plated through the component holes When working on these poards observe the following general rules a Use a low heat 25 to 30 watts small tip soldering iron and a small diameter rosin core solder b Circuit components can be removed by placing the soldering iron on the component lead on either side of the board and pulling up on lead component is obviously dam aged clip leads as close to components as possible and then remove Excessive heat ean cause the circuit and poard to separate or cause damage to the component Component lead hole should be cleaned with a toothpick or other appropriate device be fore inserting new lead To replace components shape new leads and insert them in holes Reheat with iron and add solder as required to insure a good electrical connection e Clean excess flux from the connection and adjoining area ES PE
46. r cord receptacle Holder fuse Stand tilt Binding post red Binding post black Cover side Cover bottom Spacer CAB Jewel pilot light Base pilot light Hinge Frame assembly Cover top Foot assembly Terminal ground black Plate right Plate left Panel front Panel rear Bracket transistor Manual Operating and Service MFR PART NO AC 3 342014 obd Zea n OR Appendix A CODE LIST OF MANUFACTURERS The following code numbers are from the Federal Supply Code for Manufacturers Cataloging Handbooks H4 1 Name to Code and H4 2 Code to Name and their latest supplements The date of revision and the date of the E supplements used appear at the bottom of each page Alphabetical codes have been arbitrarily assigned to suppliers not appearing in the H4 Handbooks Code Code Code 5 No Monufacturer Address No Manufacturer Address Ranufoetvrer Address 00000 0 5 Common Any soppller of U 05245 Conponeats Corp Chicago 09135 Tech Ind Inc Atohm Elect Burbask Calif 00136 McCoy Electronics Holly Springs Pa 05277 Wesllaghouse Electric Corp 09250 Electro Assemblies lac Chicago 11 00213 Sage
47. ra Calif GTS Corp Elkhart lad TT Cannon Electric Jac Cinema Div Aerovox Corp C P Clare amp Centralab Div of Globe Union lac Milwaukee Vis Chicago Ill New York N Y Los Aogeles Calif Borbank Calif Chicago Conaercial Plastics Co Cotalsh Wire Co The Colo Coll Co Providence 8 1 Chicago Miniatore Lamp Works Chicago Ill Cinch Co Howard Jones Div Chicago IIl Dow Coraing Corp Midland Mich Electro Motive Co lac Willimantic Dialight Corp Brooklyn N Y Indiana General Corp Electronics Div Keasby N J General Instrument Corp Cap Div Newark N J Drake Hfg Co Harwood 15 Hugh Eby Philadelphia Pa Gudenaa Chicago ill Elastic Stop Nut Corp Walon Robert Hadiey Co Los Angeles Calif Erie Techaological Products lac Erie Pa Hansea Mig Co Inc Princeton tad Harper Co Chicago ill Helipot Div of Beckman last fac Fullerton Calif Hughes Products Division of Hoghes Aircraft Co Newport Beach Anperex Elect Co Hicksvitte L E N Y Bradley Semicoadector Com New Haven Conn Carling Electric Hartford Cona Circle Mig Co Trenton N J George Garrett Co Div MSL Jedusides Inc Philadelphia Pa Federal Screw Products lac Chicago Ill Fischer Special Mfg Co Cincinnati Oblo General Industries Co The Elyria Ohio Goshen Stanpiag amp Too
48. s Oly 1 82768 Phillips Advance Control Co Joliet 31929 Honeywell int Micro Switch Div Minneapolis 82865 Research Products Corp Madison Wis Freeport 111 98734 Div of Hewlell Packard Co 82877 Rotron Mfg Co Inc Woodstock N Y 91961 Hahm Bros Spring Co Oakland Calil Palo Alto Calif 1 82893 Vector Electronic Co Glendale Callf 92180 Tra Connector Corp Peabody Mass 9882 North Hilts Electronics Inc Glen Cove N Y i 83014 Hartwell Corp Los Angeles Callf 92367 Elgeet Optical Inc Rochester N Y 98978 international Electronic Research Corp 83058 Carr Fastener Canbridge Mass 42507 Tensolite lasulated Vire Co Inc Burbank Calif 83086 New Hampshire Ball Bearlog Inc 99109 Coluabla Technical Corp New York NY Peterborough 92702 IMC Magaetics Corp Wesdury Long Island N Y 99313 Vatlan Associates Pato Allo Calif 83125 General instrument Corp Capacitor DIv 92966 Hudson Lasp Co N J 99378 Allee Corp Wiachester Mass Darlieglon C 93332 Sylvania Elecitic Prod lec 99518 Marshall Ind Capacitor Div Monrovia Callf 83148 ATT Wire and Cable Div Los Angeles Callf Semiconductor Div hi Woburn Mass 99707 Control Switch Division Controls Co 5 83186 Victory Eng Corp Soringfleld N 93369 Robbins amp Myers Palisades Park N J of America El Segundo Calif 83298 Bendix Cosp Red Bank Div Red Baak N J 93410 Stem
49. ted by the Adjustment and Calibration Procedures Paragraph5 13 An investi gation should also be made to insure that the trouble is not a result of conditions externalto the Model 465A 5 24 Conduct visual check of the Model 465A for possible burned or loose components loose connect jons or any other obvious conditions which might suggest a source of trouble 5 25 Table 5 4 contains procedures which may be used as a guide in isolating malfunctions The steps Table 5 4 Remove the side of C14 from the circuit board Set Model 465A GAIN to 40 db Apply a 1 0 mV 2kHz input signal Measure the de voltage at the side of C20 Should be 445 v 1 v If correct proceed to 8 if incorrect go directly to 9 y Observe the ac waveform at the Model 4654 OUTPUT Should be a sine wave with peak voltage of approximatel 12 7 v 9 v rms If incorrect proceed to Observe the ac waveform at the base of Q4 Should be a sine wave with peak voltage of approximately 12 7 v 9 v rms If correct proceed to if incorrect go directly to Observe the ac waveform at the junction of R24 and R25 Should be a sine wave with peak voltage approximatel 12 1 v 9 v rms If correct proceed to 6 if incorrect go directly to Check R26 R27 and C15 Troubleshooting Section V in Table 5 4 describe the norm
50. the oscillator frequency to 100 Hz and adjust the amplitude for 10 V at the 465A OUTPUT c Place a 1 resistor hp Part No 0757 0059 in series with the 465A INPUT and the oscillator The OUTPUT should read 9 1 0 4V This verifies an input impedance of 10 9 d Set oscillator frequency to 10 KHz and check oscillator output for 1 0 V amplitude The 465A OUTPUT should read greater than 6 0V This verifies an input impedance of 10 MQ shunted by 20 pF 872 Amplitude volts 5 10 OUTPUT IMPEDANCE CHECK b Model 465A Table 5 2 Frequency Response Test AC Voltmeter Reading hp Model volts Use the test arrangement shown in Figure 5 1 Set the 465A GAIN to 20 dB Set the oscillator frequency to 1kHz and adjust the amplitude for 10 0 V at the 465A OUTPUT Place a 50 ohm resistor hp Part No 0757 0023 across the 465A OUTPUT termi nals The AC voltmeter should read 5 0 0 3 V This verifies an output impedance of 50 ohms DISTORTION CHECK Figure 5 2 describes the recommended test arrangement Set the 465A GAIN to 20 dB Set the oscillator frequency to 1 kHz and adjust the amplitude for 5 V with the Distortion analyzer in the VOLTMETER mode Switch the distortion analyzer FUNCTION to SET LEVEL and adjust SENSITIVITY and VERNIER for full scale reading of 1 Change FUNCTION switch to DISTORTION and null the fundamental frequency with the BALANCE and FREQUENCY contro
51. ument The offset pin on the power cable three prong connector is the ground wire 2 9 To preserve the protection feature when oper ating the instruments from a two contact outlet use a three prong adapter and connectthe green pigtail on the adapter to ground 2 10 INSTALLATION 2 11 The Model 465A is fully transistorized No special cooling is required however the instrument should not be operated where the ambient temperature exceeds 55 C 1319F The Model 465A is shipped with plastic feet and tilt stand in place ready for use as a bench instrument 2 12 RACK MOUNTING 2 13 The Model 465A may be rack mounted by using an adapter frame hp Part No 5060 0797 The adapter frame can be rack mounted only and accepts any combination of submodular units 2 14 COMBINATION MOUNTING 2 15 Combination mounting the Model 465A may be done by using a Combining Case hp Model 1051A or 1062A depending on depth The Combining Case is a full module unit which accepts a combination of submodular units 2 16 REPACKAGING FOR SHIPMENT 2 17 The following paragraphs contain a general guidefor repackaging of the instrument for shipment Refer to Paragraph 2 18 if the original container is to be used 2 19 if it is not If you have any questions contact your local hp Sales and Service Office NOTE If the instrument is to be shipped to Hewlett Packard for service or repair attach a tag to the instrument
52. v 15558 Micron Etectronles 04062 Arco Electtonle tac Great Neck Y Rockaway N J Garden Cily Long Island N Y 04222 HI Q Division of Aerovox Myrtle Beach 5 08145 U S Engineering Co Los Angeles Callf 15566 Amprobe tost Corp Lynbrook N Y 04354 Precision Paper Tube Co Wheeling HE 03249 Bl Delbert Pomona Calif 15631 Cabletronics Coste Mosa 04404 Dynec Division of Hewlett Packard Co 08358 Burgess Battery Co y 15772 Twentlath Century Coll Spring y 3 Pato Alto Calif Niagara Falls Ontario Canada Santa Clara Calif L 04681 Sylvanta Electric Products Microwave 08524 Deutsch Fastener Corp Los Aogeles Calif 1580 Fenwal Elect Iac Fraainghan Mass Device Div Mountala View Calif 08664 Bristol Co The Waterbury 15818 Ametco lac ML View Calf 04673 Dakota Enge Inc Culver City Calif 08717 Sloan Company Sua Valley Calif 16037 Sproce Plne Mica Co Sprace Pine 8 6 04713 Motorola Iac Semiconductor Prod Div 08748 IFT Cannon Electric Ise Phoenix Div 16179 Omal Spectra inc Farmington Mich Phoenix Aflzona Phoenix Arizona 16352 Computer Dlode Corp Lodi NJ 04732 Co fac Wester Div 08727 Nalioaai Radio Lab lat Paramus R J 16585 Bools Altcraft Nat Corp Pasadena Calif Culver Clty Calif 08792 GBS Electronics Sealcondactor 16688 deal Prec Meter Co fac 04773 Automatic Electric Co Nort lake Ill Operations of 8 5 lac De Jur Meter Div
53. vides three terminal input and output operation for isolation from the chassis The input and output may be used infloat ing operation to 500 DC with respect to chassis ground 1 4 The solid stat low noise design of the 465A allows operation over a wide voltage range for appli cation as both a preamplifier and amplifier The compact solid state construction allows operation in a variety of environments 1 5 IDENTIFICATION 1 6 Hewlett Packard uses atwo section eight digit serial number 000 00000 If the first three digits of the serial number on your instrument do not agree with those on the title page of this manual change sheets supplied with the manual will define differences between your instrument and the Model 465A described in this manual 1 7 letter prefixes the serial number the in strument was manufactured outside the United States 1 1 uo Model 465 Section II SECTION INSTALLATION 2 1 INTRODUCTION 2 2 This section contains
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