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1. 600 ohms 1 to 100 ke Model 470E Shunt Resistor Fr quency and period readings available Fre Models 523C CR D DR or quency measuring capabilities to at least 600 ke 524C D Electronic Counters Fr quencies available 100ER Precisions Fre quency Standard a 10 cps b 100 eps d 100 ke Output voltage 5 volts rms minimum Frequency accuracy 0 05 Frequency range flat from 5 cps to at least 600 kc Models 150A 160B 170A Oscilloscopes 00084 2 Model 200CD Section V Paragraphs 5 1 to 5 4 SECTION V MAINTENANCE 5 1 INTRODUCTION 5 2 This section contains test and maintenance in formation for Model 200CD Wide Wange Oscillator A performance check is included Paragraph 5 39 that may be used to verify operation within published specifications This check should e made with the instrument in its cabinet This section also includes recommended test equipment troubleshooting repair and adjustment procedures 5 3 PERIODIC MAINTENANCE 5 4 The Model 200CD should requite a minimum of maintenance since there are few moving parts The Y bE E t 200CD A 0582 following procedure performed once or twice a year should insure smooth operation a Put one drop of oil in each of the three oil holes on the tuning drive mechanism b Place a small amount of high quality contact cleaner on the RANGE switch contacts Rotate the Switch bac
2. Phaostran instrument and Electronic Co Phoell Mfg Co Philadelphia Steel and Wire Corp Philadelphia Pa Potter and Brumfield Div of American Machine and Foundry Princeton Ind Radio Condenser Co Camden N J Radio Receptor Co Inc Brooklyn Resistance Products Co Harrisburg Pa Rubbercraft Corp of Calif Torrance Calif Shakeproof Division of Illinois No Hollywood Calit San Francisco Calif South Pasadena Calif Chicago Ill Tool Works Elgin IH Signal indicator Corp New York N Y Struthers Dunn Inc Pitman N J Thompson Bremer amp Co Chicago IN Tilley Mfg Co San Francisco Calif Stackpole Carbon Co St Marys Pa Standard Thomson Corp Tinnerman Products Inc Transtormer Engineers Ucinite Co Veeder Root Inc Wenco Mfg Co Continenta Wirt Electronics Corp Philadelphia Pa New Rochelle N Y Waltham Mass Cleveland Ohio Pasadena Calif Newtonville Mass Hartford Conn Chicago lil Zierick Mfg Corp Mepco Division of Sessions Clock Co Schnitzer Alloy Products Times Facsimile Corp New York N Y Electronic Industries Association Any brand tube meeting standards Washington D C Unimax Switch Div of W L Maxson Corp United Transformer Corp Oxfosd Electric Corp Bourns Laboratories Inc Acro Div of Robertshaw Fulton Controis Co All Star Products Inc Avery Adhesive Label Corp Hammerlund Co Inc Stevens Arnold Ca Inc Internationa
3. Baltimore Md Mt Vemon N Y Shallcross Mfg Co Selma N C Simpson Electric Co Chicago Ill Sonotone Corp Elmsford Sorenson amp Co Inc Spaulding Fibre Co Inc Sprague Electric Co Telex Inc Thomas amp Betts Co Trippletl Electrical Inc Union Switch and Signal Div of Westinghouse Air Brake Co So Norwalk Conn Tonawanda N Y North Adams Mass St Paul Minn Elizabeth 1 N J Bluffton Ohio Swissvale Pa Universal Electric Co Owosso Mich Ward Leonard Electric Co Mt Vernon Western Electric Co Inc New York N Y Weston Inst Div of Daystrom Inc Newark N J Wittek Manufacturing Co Chicago 23 IN Woltensak Optical Co Rochester N Y Allen Mfg Co Hartford Conn Allied Control Co Inc New York N Y Alimetal Screw Prod Co Inc Garden City Atlantic India Rubber Works Inc Chicago HI Amperite Co Inc New York Beiden Mfg Co Chicago 111 Bird Electronic Corp Birnbach Radio Co Boston Gear Works Div of Murray Co of Texas Bud Radio Inc Camloc Fastener Corp Allen D Cardwell Electronic Cleveland Ohio New York N Y Quincy Mass Cleveland Ohio Paramus N J Prad Corp Plainville Conn Bussmann Fuse Div of McGraw Edison Co St Louis Mo Chicago Condenser Corp Chicago Il CTS Corp Elkhart Ind Cannon Electric Co Cinema Engineering Co Clare amp Centralab Div of Globe Union Inc Milw
4. Net 22 lbs 9 9 kg Shipping 27 lbs 12 2 Kg Rack Mount Net 27 lbs 12 2 kg Shipping 37 lbs 16 7 kg e Model 200CD Section I Paragraphs 1 1 to 1 9 SECTION 1 GENERAL INFORMATION 1 1 DESCRIPTION 1 2 The Model 200CD Wide Range Oscillator gener ates frequencies of excellent waveform inthe subsonic audio and ultrasonic ranges 5 cycles to 600 kc in five overlapping decade bands The Medel 200CD in cludes new design features which result in still finer performance than previous Hewlett Packard instru ments Special circuitry ensures an output voltage of low distortion and high stability with any output load impedance from zero ohms to open circuit Useful ness of the oscillator has been extendsd by designing the 200CD output circuit so that the instrument may be operated balanced as well as unbalanced and by providing a 600 ohm impedance match 1 3 The Model 200CD is easytooper te frequency and amplitude of the output voltage ar set merely by operating dials onthe control panel The easily read 6 inch diameter frequency dialis calibr ted over 3000 of arc and has an effective scale len th of approxi mately 80 inches 1 4 The Model 200CD furnishes upto 10 volts into a 600 ohm load 20 volts open circuit at any frequency from 5 cps to 600 kc A bridged tee variable attenu ator in the output circuit controls the output power 1 5 The Model 200CD provides an ideal signal source for test
5. 5 5 8 00084 2 T P8000 6 6 NOTES CONDITIONS OF DC VOLTAGE MEASUREMENT 1 BETWEEN INDICATED POINT AND CHASSIS WITH 160V DC 315V AC VOLTMETER OF IO MEGOHMS INPUT RESISTANCE 2 LINE VOLTAGE 115 230 VOLTS 50 1000 3 AMPLITUDE CONTROL AT ZERO NC 250V DC 4 RANGE SWITCH AT X100 DNA 5 MEG 5 FREQUENCY DIAL AT 10 160VDC 3 5V AC NC CONDITIONS OF RESISTANCE MEASUREMENT 250V DC BELOW 220V DC 1 BETWEEN INDICATED POINT AND CHASSIS WITH j OLME TER DNA 5 MEG PREFIX 605 DNA 2 DISCONNECTED FROM LINE VOLTAGE 3 CAPACITORS CHARGED BY OHMMETER BEFORE READINGS TAKEN DNA RESISTANCE MEASUREMENT IMPRACTICAL DUE TO HIGH CAPACITANCE IN PARALLEL WITH HIGH RESISTANCE TO GROUND VALUE IN PARENTHESES APPROXIMATE x VOLTAGE MAY VARY UP TO t20 185VDC 190V DC I85vDC o 190VDC 220VDC 110V DC DNA DNA 200 CD S Di Eerz Figure 5 8 Model 200CD Voltage and Resistance Diagram d5002 ISPOW 8 9 910314 AIUuornoes OT S 78000 Al RANGE I b SWITCH ASSEMBLY PART OF COPYRIGHT 1954 BY HEWLETT PACKARD COMPANY This drawing Is intended for the operation and E 1 36V 1 maintenance of Hewlett Packord equipment and is 1 not to be used otherwise or reproduced without writen v2 consent of the Hewlett Pockard Compony 28 20000 5 339 2 6CW5 EL86 a ays
6. Radio Corp Clifton N J General Electric Co Schenectady N Y 24455 E Lamp Division Nela Park Cleveland Ohio 00015 39 Revised February 1965 Cade No 24655 26365 26462 26992 28480 33173 35434 36196 37942 39543 40920 42190 43990 44655 47904 48620 49956 52090 63743 54294 55026 55933 55938 56137 56289 53446 59730 60741 61775 62119 63743 64959 65092 66295 66346 70276 70309 70319 70485 70563 70303 70998 71002 71041 71218 71286 71313 71400 71435 71450 71468 11471 71482 71590 71616 71700 71744 71753 71785 71984 72092 72136 21707 72354 72619 72656 72699 72758 72765 72825 72928 72964 77982 73061 73076 73138 Monufocturer Address Generat Radio Co Gries Reproducer Corp Grobet File Co of America Inc Hamilton Watch Co Hewlett Packard Co G E Receiving Tube Dept Lectrohm Inc Chicago 111 Slanwyck Corp Hawkesbury Ontario Canada PLR Mallory amp Co Inc Indianapolis Ind Wesi Concord Mass New Rochelle Caristadt N J Lancaster Pa Pala Aito Calif Owensboro Ky Mechanical Industries Prod Co Akron Ohio Miniature Precision Bearings Inc Keene N H Muter Co Chicago Ill C A Norgren Co Englewood Colo Ohmite Mfg Co Skokie IIl Polaraid Cotp Precision Thermometer and Inst Co Raytheon Company Rowan Controsler Co Ward Leonard Electric Cambridge Mass Philadelphia Pa Lexington Mass
7. thustendingto maintainthe out put constant regardless ofload Self oscillationinthe amplifier circuit is prevented by proper choice of re sistance in the feedback circuits and by controlling plate and cathode impedances over the entire frequency range of the oscillator The output stage is protected against a cathode to cathode short circuit by the re sistors in series with the transformer secondaries These resistors also make the oscillator present a 600 ohm impedance to the attenuator 4 11 OUTPUT CIRCUIT 4 12 Transformer coupling provides isolation be tween the oscillator circuit and the output circuit and allows the output to be obtained either balanced or un balanced Since a single transformer will operate suitably over only a part ofthe frequency range covered 200CD two transformers are provided Connections between cathode followers V2 and V4 and the proper transformer for the band in use are set up by the RANGE switch The secondary windings ofthe coupling transformers supply a conventional bridged tee at tenuator the setting of which is adjusted by opera tion of the AMPLITUDE control on the front panel As the control is turned counterclockwise the loss inserted by the attenuator is increased The source impedance at the output terminals is 600 ohms 4 13 With attenuator set for minimum loss the out put circuit is arranged for balanced operation and is so designed that for frequencies up to 10 kc stray cap aci
8. 00CD Section V Paragraphs 6 1 to 6 7 6 1 INTRODUCTION 6 3 Miscellaneous parts are listed at the end of 4 Table 6 1 6 2 This section contains information for ordering replacement parts Table 6 1 lists parts in alpha 6 4 ORDERING INFORMATION meric order of their reference designators and indi cates the description hp part eun of each part 6 5 To obtain replacement parts address order or together with any applicable notes and provides the inquiry to your local Hewlett Packard Field Office follows See Appendix B for list of office locations Identify parts by their Hewlett Packard part numbers a Total quantity used in the instrument TQ voli abu 6 6 NON LISTED PARTS b Description of the part See list of abbrevia 6 7 To obtain a part that is not listed include tions below a Instrument model number Typical manufacturer of the part in a five Do Then se ae digit code See Appendix A for list of manu facturers XY c Description of the part d Manufacturer s part number d Function and location of the part DESIGNATORS 3 A assembly F fuse P plug Vv vacuum tube neon B motor FL filter Q transistor bulb photocell etc BT battery HR heater QCR transistor diode w able capacitor J jack R resistor x a EIER CR diode K relay RT thermistor XDS A older DL delay line L inductor S switch u ae DS lamp M meter T transformer 252056 misc electro
9. 200CD WIDE RANGE OSCILLATOR OPERATING AND SERVICE MANUAL HEWLETT i PACKARD HEWLETT hp PACKARD i CERTIFICATION The Hewlett Packard Company certifies that this instrument was thoroughly tested and inspected and found to meet its published specifications when it was shipped from the factory The Hewlett Packard Company further certifies that its calibration measurements are traceable to the U S National Bureau of Standards to the extent allowed by the Bureau s calibration facility WARRANTY AND ASSISTANCE All Hewlett Packard products are warranted against defects in materials and workmanship This warranty applies for one year from the date of delivery or in the case of certain major components listed in the operating manual for the specified period We will repair or replace products which prove to be defective during the warranty period No other warranty is expressed or implied We are not liable for consequential damages For any assistance contact your nearest Hewlett Packard Sales and Service Office Addresses are provided at the back of this manual ji il OPERATING AND SERVICE MANUAL HP PART NO 200CD 903 MODEL 200CD CDR WIDE RANGE OSCILLATOR SERIALS PREFIXED 605 Appendix C Manual Backdating Changes adapts this manual to serials prefixed 333 229 212 129 and 103 005 and serials 22549 thru 1 Copyright Hewlett Packard Company 1955 Box 301 Loveland Colora
10. 3 00334 00335 00373 00656 00779 00781 00815 00853 00866 00891 01121 01255 01281 01295 01349 01561 01589 01930 01961 02114 02286 02660 02735 02771 02777 03508 03705 03797 03877 03888 03954 04009 04013 04062 04222 04298 04354 04404 04651 04713 04732 04773 04777 04796 04811 04870 05006 05277 0534 05593 05616 05624 05728 05729 05783 05820 06004 06175 06402 06475 06540 06555 06751 06812 07088 Manufacturer Address U S A Common McCoy Electronics Sage Electronics Corp Humidail Co Westrex Corp Garlock Packing Co Electronic Products Div Aerovox Corp Any supplier of U S Mount Holly Springs Pa Rochester N Y Colton Calif New York Camden N J New Bedford Mass Amp inc Harrisburg Pa Aircraft Radio Corp Boonton Northern Engineering Laboratories Inc Burlington Wis Sangamo Electric Company Ordill Division Capacitors Goe Engineering Co Carl E Holmes Corp Allen Bradley Co Litton Industries Inc TRW Semiconductors inc Texas Instruments Inc Transistor Products Div The Altiance Mfg Co Chassi Trak Corp Pacific Relays Inc Amerock Corp Pulse Engineering Co Ferroxcube Corp of America Cale Mfg Co Palo Alto Calif Amphenol Borg Electronics Corp Chicago 1M Radio Corp of America Semiconductor and Materials Div Somervilte N J Vocaline Co of America Inc Marion IN Los Ange
11. 3 81095 81312 From Manufacturer Address Hughes Products Division of Hughes Aurcrafl Co Newport Beach Calif Amperex Electronic Co Div of North American Phillips Co Inc Hicksville Beckman Helipot Corp So Pasadena Calif Bradley Semiconductor Carp Mamden Conn Carling Electric Inc Hartford Conn George Garrett Co Inc Philadelphia Pa Federal Screw Prod Co Chicago 111 Fischer Special Mfg Co Cincinnati Ohio The General Industries Ca Elyria Ohio Goshen Stamping amp Tool Co Goshen Ind JFD Electronics Carp Brooklyn N Y Jennings Radio Mfg Co Signalite Inc J H Winns and Sons Industrial Condenser Corp R F Products Division of Amphenol Borg Electronics Corp Danbury Conn E F Johnson Co Waseca Minn International Resistance Co Philadelphia Pa San Jose Calif Neptune N J Winchesler Mass Chicago Ill Jones Howard B Diviston of Cinch Mfg Corp Chicago Ill James Knights Co Sandwich 111 Kulka Electric Corporation Vernon N Y Lenz Electric Mfg Co Chicago 111 Littlefuse Inc Des Plaines Lord Mfg Co Erie Pa C W Marwedel San Francisco Calif Micamold Electronic Mfg Corp Brooklyn N Y James Millen Mfg Co Inc Malden Mass J W Miller Los Angeles Calif Monadnock Mills San Leandro Calif Mueller Electric Co Cleveland Ohio Oak Manufacturing Co Crystal Lake Hil Bendix Pacific Division of Bendix Corp Pacific Metals Co
12. 4 thru 22549 2 3 4 5 6 7 8 OE BEN 45 55 65 14 8 Br CHANGE 5 Change R23 24 to resistor fixed composition 820 000 ohms 10 1 2 w hp Part No 0687 8241 If amplitude oscillations occur expecially at high frequencies use current value of resistors CHANGE 6 Section VI Table 6 1 under Miscellaneous and Table 6 2 Delete the following Dise Ass y Vernier Drive hp Part No 5040 0607 Mfr 28480 TQ 1 Bearing Capacitor Drive hp Part No 5020 0618 Mfr 28480 TQ 1 Spring Thrust hp Part No 5000 0637 Mfr 28480 TQ 1 Add the following Disc vernier drive 5020 0236 Disc vernier drive 5040 0211 Spring compression 1460 0019 Spring only for replacement For replacement of vernier drive use current part numbers Delete the following Assembly Gear hp Part No 5060 0020 Assembly Gear hp Part No 5060 0021 Spring hp Part No 1460 0114 Add the following Gear Spur hp Part No 5020 0011 Assembly Gear hp Part No 5020 0602 Spring hp Part No 624A 36B 5 Spring only for replacement For replacement of gears use current gear 3 CHANGE 7 Section VI Table 6 1 under Miscellaneous and Table 6 2 assembly ALL Proper Range Switches for All Serials In rument Serial No Range Switch hp Part No 1 thru 833 200CD 19W 834 thru 853 200CD 19WA 854 thru 903 200CD 19W 904 thru 3637 200CD 19WA 3638 and above 200CD 19WB Proper Output Transformers for All Serial
13. 816 0008 R fxd ww 10K ohms 10 10 W 35434 Type C 10 obd 1 1200 0009 Socket tube 7 pin minat 91662 316PH 3702 2 1200 0072 Socket tube 9 pin 91662 988PHTDX103 2 1220 0006 Shield base 9 pin 71785 441 43 11 215 202 2 1220 0029 Shield tube for V 98978 TRTg 6027B 2 1400 0084 Fuseholder extractor post type 75915 342014 1 1450 0009 Lampholder bayonet 72765 223G CE 1 1450 0013 Lampholder candelabra 72765 169B 1 1460 0114 Spring gear assy 91260 obd 1 1500 0002 Flexible coupler 76487 obd 1 1901 0037 Rectifier silicon 83701 IN2359 2 1923 0021 Tube elect 6AU6 7 pin minat 33173 6AU6 2 1923 0044 Tube elect EL86 9 pin minat 73445 EL 86 6C W5 2 J I See introduction to this section 00084 4 6 5 Section VI Table 6 2 2100 0013 2100 0036 2100 0113 2100 0154 2110 0016 2110 0021 2140 0007 2140 0009 3101 0001 5000 0637 2020 0600 5020 0618 9040 0212 5040 0600 5040 0607 5060 0020 5060 0021 5060 0625 5060 0633 5080 0205 8120 0050 9100 1329 9110 0004 9120 0016 6 6 Table 6 2 Replaceable Parts Cont d Description var comp lin 1K ohms 0 5 W var comp dual tandem 2 W RU Fuse 0 6 amp s b for 230 v operation Fuse 1 25 amp s b for 115 v operation Lamp incd 50 v 10 W Lamp incd 0 15 amp 6 8 v Switch tog SIST 3 amp Spring thrust vernier drive Hub dial fits on shaft of 5020 0617 Bearing capatitor drive Insulator fl
14. A Edif Arisan Of 74 Avda Francisco de Miranda Chacaito Apartado del Este 10 837 Caracas Tel 71 88 05 YUGOSLAVIA Belram S A 83 Avenue des Mimosas Brussels 15 Belgium Tel 35 29 58 ELSEWHERE Hewlett Packard i Overseas Sales Department 1501 Page Mill Road Palo Alto California 94304 U S A Telephone 415 326 7000 TWX 910 373 1267 Telex 033811 Cable HEWPACK 3 Model 200CD Instrument Serial Prefix Make Manual Changes Serials 1 thru 903 Serials 904 thru 22549 2 3 4 5 6 7 8 CHANGE 1 CHANGE 2 Appendix C ig MANUAL BACKDATING CHANGES Model 200CD WIDE RANGE OSCILLATOR Manual Serial Prefixed 605 hp Part No 200CD 903 This manual backdating sheet makes this manual applicable to earlier instru ments Instrument component values that differ from those in the manual yet are not listed in the backdating sheet should be replaced using the part number given in the manual Instrument Serial Prefix Make Manual Changes 1 2 3 4 5 6 7 8 Change V1 and to 6AC7 tubes hp Part No 1923 0014 The following partial schematic shows these tubes and their connections 1 Delete C17 and C18 below serial 3637 Change R11 to 1000 ohm rheostat hp Part No 2100 0036 and R12 to 3000 ohms hp Part No 0689 3025 The following partial schematic shows the electrical connections OUTPUT VOLTS ADJ Ed TO 4 OF VI 65 7 Appendix C A
15. AILABLE DIMENSIONS WEIGHT 1 0 Model 200CD Table 1 1 Specifications 5 cps to 600 ke covered in five ranges Xi 5 cps to 60 cps X10 90 cps to 600 cps X100 500 cps to 6 kc X1000 5 ke to 60 ke X10000 50 ke to 600 kc 2 including calibration error warmup changes due to aging of compo nents tubes etc 6 inch diameter calibrated over 300 of arc 85 divisions Total scale length 78 inches 1 db entire frequency range reference 1 kc 160 milliwatts 10 volts into 600 ohm rated load 20 volts open circuit Better than 0 1 at lower frequencies and approximately 1 at higher frequencies 600 ohms Output is balanced to ground for zero attenuation May be operated with one side grounded if desired 0 2 from 20 cps to 200 kc 0 5 from 5 cps to 20 cps and from 200 kc to 600 kc Less than 0 1 of rated output decreases as output is attenuated 115 230 volts 41005 50 1000 cps 90 watts 11004A Line Matching Transformer provides balanced output at any attenuator setting at 135 and 600 ohms 11000A Cable Assembly 44 in long terminated each end with dual banana plugs 11001A Cable Assembly 45 in long with one dual banana plug and one BNC male connector Cabinet Mount 7 3 8 in wide 11 1 2 in high 14 3 8 in deep 187 3x 292 1x 365 1 mm Rack Mount ann ren eis EET s m W im Pa 7 gt i 8 5 6 a 200CDR Cabinet Mount
16. INSTRUCTIONS 3 1 INTRODUCTION 3 2 This section contains operating instructions for the Model 200CD Wide Range Oscillator Figure 3 1 gives basic operating instructions Th remainder of this section supplements these instructions 3 3 OPERATION 3 4 ON The oscillator is ready for use as received from the factory and will give specifie performance after a short warmup period Turn ostillator on and allow approximately five minutes to warm up Where maximum accuracy is desired this warm up period should be extended to at least thirty minutes 3 5 RANGE The RANGE is select with the five position RANGE switch The position of this switch indicates the multiplying factor for the frequency dial calibration 3 6 FREQUENCY dial The frequency dial varies the frequency between the RANGE switch steps The dial is calibrated from 5 to 60 anditsin lication multi plied bythe factor indicated bythe RANGE switch will give the actual output frequency of the sscillator The small knob below the frequency dial is vernier con trol for the dial 3 7 OUTPUT CIRCUIT OPTIONS he output cir cuit of the Model 200CD may be arrangid for balanced or unbalanced operation Typical conneftions for each are indicated in figure 3 2 a Unbalanced Operation To operate with side grounded a strap is placed between the G terminal as indicated in figure 3 2A To equipment bein driven To equipment being driven UNBALA
17. ISU No N Y a T c2 lt 4 ci z 10 o t 5 y i rJ m s TET OUTPUT j x amp B rs 1 LOW FREQUENCY 1000 I TRANSFORMER T PART OF Al EA ee oe ee t R37 AMPLITUDE 200 x 2 N a M 2 R9t R9A 50 52K RIO t RIDA 5028 catia ADJ T 10W LAMP v4 6CW5 EL86 less 50 1000 nsv aor RED BL R40 GREEN 4 3 4 DE 18 6 37 v2 v3 v4 051 GREEN 5 4 5 Figure 5 9 e 1 4 09 TRANSFORMER NOTES I1 CONDITIONS OF DC VOLTAGE MEASUREMENT L LINE VOLTAGE AT 115 VOLTS 60 2 AMPLITUDE CONTROL SET AT 3 SET FREQUENCY DIAL AT IO RANGE SWITCH AT X100 4 VOLTAGES MEASURED BETWEEN INDICATED POINTS AND CHASSIS WITH VOLTMETER OF 122 MEGOHMS INPUT RESISTANCE II CONDITIONS OF AC VOLTAGE MEASUREMENT THRU 3 SAME AS CONDITIONS 4 VOLTAGES MEASURED BETWEEN INDICATED POINTS WITH AG VOLTMETER HAVING 000 OR MORE OHMS VOLT SENSITIVITY FREQUENCY RESPONCE FLAT TO 5KC MIN ADJUSTED AT FACTORY FOR OPTIMUM PERFORMANCE AVERAGE VALUE SHOWN PART MAY BE OMITTED TZ CAPACITANCE IN PF UNLESS OTHERWISE PANEL CONTROL SCREWDRIVER ADJ INDICATED Model 200CD Schematic Diagram 6 9 9In3l A uonoeg 100 I9PONW Model 2
18. Mass Burbank Calif New York Palo Alto Calif Evanston Ill Newbury Park Calif THE FOLLOWING H P VENDORS HAVE NO NUM BER ASSIGNED IN THE LATEST SUPPLEMENT TO THE FEDERAL SUPPLY CODE FOR MANUFAC TURERS HANDBOOK 30000 0000F 0000M 0000P 00002 000AA 000AB 000 000 000 QOONN A 00000 00055 ocoww 000 S K Smith Co From Winchester Electronics Inc Santa Monica Calif Malco Tool and Die Los Angeles Calif Western Coi Div of Automatic ind inc Redwood City Calif Ty Car Mfg Co Inc Holliston Mass Willow Leather Products Corp Newark N J British Radio Electronics Ltd Washington D C ETA England indiana General Corp Elect Div Indiana Precision Instrument Components Co Van Nuys Calif Hayward Calif San Jose 27 Calif Oakland Calif Burbank Calif Burlingame Calif Los Angeles 45 Cal f Rubber Eng amp Development N D Manufacturing Co Cooltron Control of Elgin Watch Co California Eastern Lab FSC Handbook Supplements H4 1 Dated DECEMBER 1964 H4 2 Dated MARCH 1962 Appendix B HEWLETT PACKARD INTERNATIONAL OFFICES Instrument Sales and Service 11 65 Electronic ARGENTINA Mauricio A Saurez Telecomunicaciones Carlos Calvo 224 Buenos Aires Tel 30 6312 AUSTRALIA Sample Electronics Vic Pty Ltd 9 11 Cremorne Street Richmond E 1 Victoria Tel 42 4757 3 lines Sample Electronics N S W Pty Ltd 4 Gr
19. Model 200CD Manual Changes Model 200CD Page 2 Instrument Serial Prefix Make Manual Changes Instrument Serial Prefix Make Manual Changes 1 2 3 4 5 6 7 8 I RR Serials 1 thru 903 Serials 904 thru 22529 005 3 4 5 06 7 8 AB 103 CHANGE 3 Change and to 6SH7 tubes hp Part No 1923 0036 Change V2 and V4 to 6AU5 tubes hp Part No 1923 0020 The following schematic shows electrical connections 3 2 X IOK RIS HIGH END Ri2 IOM le 100 zem D is 46 MAN 8 OUTPUT VI VOS 8 6SH7 OMA 5 165 R20 6 68K NAR RI R23 100 22K 8 2M d 190 135 RIB Do Mem E 68K AAA L3 8 2 0MH R24 o SuF Yd v4 o 4 IOO 100 C 6AU5 GT ale 5AR4 tube is interchangeable with 5Y3 in the power supply Delete R51 hum adjust and R50 Dynamic Bal Adj CHANGE 4 Change R50 to 250 K ohms hp Part No 2100 0175 connected between R23 and R24 Change R30 31 to resistors maiched pair 2500 ohms each matched to within 1 hp Part No 200J 26 Delete R35 and 36 Partial schematic shows change in this circuit Ve 316CW5 DYNAMIC BAL AID Model 200CD Appendix C Manual Changes Model 200CD Page 3 Instrument Serial Prefix Make Manual Changes Instrument Serial Prefix Make Manual Changes Serials 1 thru 903 Te 299 CB Serials 90
20. NCED BALANCED OPERATION OPERATION Figure 3 2 Typical Output Cohnections 00084 3 b Balanced Operation Connections for balanced operation are indicated in figure 3 2B The broken line from the ground terminal indicates the output circuit is balanced to ground within the tolerances given below 3 8 The AMPLITUDE control in the output circuit is a bridged T attenuator and at any setting except minimum attenuation unbalances the circuit There fore for balanced operation the AMPLITUDE control must be set for maximum output full clockwise Out put balance also is a function of frequency because of capacitive feed through at higher frequencies Up to 10 kc however unbalance is less than 0 1 and at 600 ke is approximately 1 If small outputs are de sired or if balance at higher frequencies is critical turn the AMPLITUDE control maximum clockwise and connect an external attenuator designed for the fre quencies involved between the Model 200CD and the load 3 9 A balanced output may also be obtained over the full range of the AMPLITUDE control by using an fp AC 60A B Line Matching Transformer at the output terminals of the oscillator 3 10 The following chart indicates the area where within 1 of balance may be obtained This chart in dicates balance obtainable at various settings of the AMPLITUDE control when operating into a 600 ohm load Where other values of load are used the chart does not apply dir
21. O 2110 0021 Fuse 1 25 amp s b for 115 V operation 2110 0018 Fuse 0 6 amp s b for 230 V operation Connector assy consists of 5060 0625 Binding post w ground link 5060 0637 Binding post red 0340 0087 Insulator bl 3 hole rear 0340 0091 Tnsulator black 3 hole front with locating key 11 Not assigned 12 13 200CD 6 Coll Reb mh Nsr part of Al L6 9110 0001 Rector filter choke 6h P1 8120 005 Assy power cable smooth black shiny 7 5 ft NEMA plug R1 thru R10 Nsr part of A1 R11 2100 0154 R var comp lin 1 K ohms 30 3 10 W R12 0689 302 R fxd comp 3 K ohms 57 1 W R13 R14 Not assigned R15 R16 0687 5601 R fxd comp 56 ohms 10 1 2 W R17 R18 0761 0031 R19 0686 1053 R20 R21 0761 0083 R22 0686 1054 R23 R24 0687 1551 fxd met flm 22 K ohms 5 1 W fxd comp 1 59 1 2 W fxd met flm 68 K ohms 45 1W ixd comp 1 59 1 2 W fxd comp 1 5 M 107 1 2 W R25 R26 0687 5601 R27 R28 0816 0003 R29 R30 R31 0816 0002 R32 fxd comp 56 ohms 10 1 2 W fxd ww 500 ohms 107 10 W 470 ohms nsr part of 14 fxd ww 3 K ohms 10 10 W 470 ohms nsr part of L5 2222090 uuu See introduction to this section 6 2 00084 3 Model 200CD Section VI Table 6 1 Table 6 1 Circuit CE do Pera sss P Stock No Description Note Reference Designation Index Cont d R33 R34 Nsr part of Al R35 R36 0690 1531 R f
22. R50 dynamic balance fora dip minimum distortion see figure 5 2 on the distortion analyzer meter until the lowest possible dip is btained Note For optimum results use lowest frequency setting of the 200CD Wide Range Wscillator i Repeat steps a through h adjusting all distortion analyzer controls for 50 cps 60 cps if 50 cps line frequency is being used instead of 10 cps j Adjust R51 hum balance see fiire 5 2 instead of dynamic balance in step h 200 RANGE N 330B OSCILLATOR 5 ANALYZER Ud 6000 RESISTOR Figure 5 6 Distortion Test Setup 5 38 OUTPUT VOLTAGE a Connect the Model 200CD to ac voltmeter b Load the Model 200CD with a 600 ohm load resistor 00084 1 Section V Paragraphs 5 37 to 5 43 c Turn Model 200CD AMPLITUDE fully clockwise and adjust R11 for 11 5 volts on the ac voltmeter see figure 5 1 5 39 PERFORMANCE CHECK 5 40 Proper operation of the Model 200CD is veri fied in the followingprocedure A complete adjustment procedure is given in paragraph 5 24 5 41 OUTPUT IMPEDANCE a Set Model 200CD RANGE to X100 frequency dial to 10 b Connect Model 200CD output to an ac transis tor voltmeter Set the voltmeter RANGE to 30 volts c TurnModel 200CD AMPLITUDE fully clockwise The voltmeter should read at least 20 volts d Set Model 200CD AMPLITUDE for exactly 20 volts as read on the voltmeter e Connect a 600 ohm resi
23. ale Division Lansdale Pa 87473 Western Fibrous Glass Products Co San Francisco Calif 87664 Van Waters amp Rogers Inc Seattle Wash 87930 Tower Mig Corp Providence 88140 Cutler Hammer Inc Lincoln tll 88220 Gould Nationa Batteries Inc 51 Paul Minn 88698 Genera Milis Inc Buffalo N Y 89231 Graybar Electric Co Oakland Calif 89462 Waldes Kohinoor Inc Cambridge Mass 89473 General Electric Distributing Corp Schenectady N Y 89636 Carter Parts Div of Economy Baler Co Chicago Ill 89665 United Transformer Co Chicago IIl 90179 U S Rubber Co Mechanical Goods Div Passaic N J 90970 Bearing Engineering Co San Francisco Calif 91260 Connor Spring Mfg Co San Francisco Calif 91345 Miller Dial amp Namepiate Co El Monte Calif 91418 Radio Materials Co Chicago lil 91506 Augal Brothers Inc Attleboro Mass 91637 Dale Electronics Inc Columbus Nebr 91662 Elco Corp Philadelphia Pa 91737 Gremar Mfg Co inc Wakefield Mass 91827 K F Development Co Redwood City Calif 91929 Minneapolis Honeywell Regulator Co Microswitch Div Freeport Tli 91961 Nahm Bros Spring Co Oakland Calif 92180 Tru Connector Corp Peabody Mass 92196 Universal Metal Prod Inc Bassett Puente Calif 32367 Elgeet Optical Co Inc Rochester N Y 92607 Tinsolite Insulated Wire Co Tarrytown 93332 Sylvania Electric Prod Inc Semiconductor Div Wobusn Mas
24. allium arsenide 9 Ge gi le 107 us nanoampere s 10 nz A t a optimum value selected d dd NC normally closed zu at factory average ae el e us a Ne neon value shown part may d mu ed NO normally open Se selenium be omitted E NPO 7 negative positive zero Sect section s Xx no standard type num h henry ies zero temperature co Si silicon ber assigned selected gt Hg mercury efficient sl slide or special type 3 Dupont de Nemours 00084 3 6 1 Section VI Model 200CD Table 6 1 Table 6 1 Reference Designation Index fi Stock No Description Note 200CD 1 Assy range switch includes C1 C2 C16 I4 L5 R1 thru R10 R33 R34 R37 R38 R42 thru R45 81 Nsr part of A1 Nsr part of A1 var cer 7 45 pf 500 fxd mica 39 pf 29 500 var 3 sect 14 617 pf sect 0130 0001 0140 0116 0121 0018 0130 0001 0130 0011 0160 0024 0140 0054 0180 0013 var cer 7 45 pf 500 vdew var cer 1 5 pf 500 vdcw fxd my 0 5 pf 100 400 fxd mica 100 pf 4107 500 fxd elect 100 uf 100 vdew 0180 0017 0180 0024 0140 0004 fxd elect 3 sect 10 uf sect 450 vdew fxd aluminum elect 40 uf 450 vdcw fxd mica 15 pf 410 500 Nsr part of A1 0140 0005 C fxd mica 27 pf 100 500 1901 0037 Rectifier silicon 2140 000 Lamp ined 0 15 amp 6 8 V CKO OO
25. aukee Wis Chicago IN New York N Y Chicago Ill Los Angetes Calif Burbank Calif Chicago IH Commercial Plastics Co The Cornish Wire Co Chicago Miniature Lamp Works A O Smith Corp Crowley Div West Orange N J Chicago MI Midland Mich San Bruno Calif Cinch Mfg Corp Dow Coming Corp Eitel McCullough Inc Electro Motive Mfg Co Inc Willimantic Conn Providence 1 Chicago Ill Brooklyn N Y Keasbey N J Coto Coil Co Inc John E Fast amp Co Dialight Corp Genera Ceramics Corp Generai Instrument Corp Semiconductor Div Girard Hopkins Newark N J Oakland Calif Drake Mfg Co Chicago Il Hugh H Eby Inc Philadelphia Pa Gudeman Co Chicago Il Robert M Hadley Co Los Angeles Calif Erie Resistor Corp Erie Hansen Mfg Co Inc Princeton Ind H M Harper Co Chicago Ill Helipot Div of Beckman Instruments Inc Fullerton Calif Code No 73293 73445 73490 73506 73559 73682 73734 73743 73793 73846 73899 73905 14276 74455 74861 74868 74970 75042 75173 75378 75382 75818 78915 76005 76210 76433 16487 76493 76530 76545 76854 77068 77075 77221 77250 77252 11342 17610 71638 77164 77969 78189 78283 78290 78452 78471 78488 78493 18553 78730 78947 79142 79251 79727 79963 80031 80120 80130 80131 80207 80223 80248 80294 80411 80486 80509 80583 80640 81030 8107
26. d of V3 and the output of the amplitude stabilizing brinch is applied to the grid of V1 The manner in whith the voltage versus frequency and phase versus fr quency charac teristics of an RC network can be utilized with an amplifier of proper design to achieve an oscillator which delivers a voltage of excellent stability and wave form is well coveredintexts such as Terman Pettit s Electronic Measurements 4 7 Variable resistor R11 is provided for adjustment of the amplitude stabilizing branch of the bridge should it be found after replacement of lamp KT1 RT2that less or more than rated voltage is being delivered to the output terminals 00084 3 4 8 Variable capacitors C3 and are adjusted at the factory for optimum calibration and amplitude constancy with frequency They should not require adjustment unless the RANGE switch is replaced 4 9 AMPLIFIER 4 10 Theoscillator amplifier is abalanced push pull circuit including a voltage amplifier stage V1 and a special cathode follower stage V2 V4 Criss cross positive feedback is usedinthe cathode follower stage to provide an essentially zero output impedance as seen by the cathode to cathode load The feedback paths are from the plate of V2 to the control grid and screen of V4 and from the plate of V4 to the control grid and screen of V2 Thedegree of the positive feed back is afunction of the load and increases as the load impedance decreases
27. do U S A 00084 6 Printed NOV 1965 Table of Contents List of Illustrations and Tables Model 200CD TABLE OF CONTENTS NC 4 1 Model 200CD Block Diagram le re tabe Model 200CD Voltage and Resistance 5 1 Left Side View Model 200CD 5 1 Diagram 5 9 5 2 Right Side View Model 200CD 5 3 5 9 Model 200CD Schematic Das ise 10 LIST OF TABLES Table Page Table Page 1 1 Specifications Motte 5 4 Frequency Period Conversion 5 6 5 1 Test Instruments 5 0 5 5 Distortion Test Frequencies 5 8 5 2 Troubleshooting 5 2 6 1 Reference Designation Index 6 2 5 3 Tube Replacement List 5 3 6 2 Replaceable Parts 6 5 00084 4 ili Section Page Section Page I GENERAL INFORMATION 1 1 V MAINTENANCE Cont d Lele Description at 49 dla es 0 9 Amplifier Power Supply 5 2 1 6 Differences Between Instruments 1 1 5 11 Repair and Replacement 5 2 1 8 Backdating Sheet 1 1 5 12 Cabinet Removal 1 592 5 14 Servicing Etched Circuit Boards 5 3 Section Page 5 16 Tube Replacement 2 5 3 II PREPARATION FOR USE 2 1 5 18 Replacement of Lamps RTL 2 introduction v u wl 2 1 and RE2 Tm TS 5 4 2 3 Unpacking and Inspection 2 1 5 20 Tuning Capacitor Repair 5 4 2 6 Power Requirements 2 1 5 22 Range Switch Repair 5 4 2 8 Power Cable a 1 9 24 Adjustments 5 4 2 11 230 Volt Operation 2 1 9 26 Preliminary Checks 5 4 2 13 Repacking for Shipme
28. eads are removed clean Reset output voltage holes with a toothpick or wooden splinter metal awls paragraphs 5 24 or soldering aids may destroy the c pper conductor through 5 38 before inserting leads 5 Cathode Recheck distortion 5 16 TUBE REPLACEMENT Followers paragraph 5 37 5 17 Tubes used in the Model 20 CD are listed in Tube Replacement List table 5 3 If V2 or V4 are Reset output voltage changed replace the special tube shields in their paragraph 5 38 original positions shown in figure 5 2 PREFIX 605 R50 RSI SET MIN SET MIN DIST DIST KC RANGE 200CD A 0581 Figure 5 2 tight Side of Model 200CD as viewed from the front 00084 5 5 3 Section V s Paragraphs 5 18 to 5 33 9 18 REPLACEMENT OF LAMPS RT1 and RT2 5 19 The amplitude stablization lamps operate well below their rating and should have a long life unless they are damaged by severe mechanical vibration When RT1or RT2 see figure 5 1 are replaced reset output voltage paragraph 5 38 E 5 20 TUNING CAPACITOR RE AIR 5 21 The tuning capacitor C A B C shown in figure 5 1 should not be loose ed unless absolutely necessary since doing so may cause misalignment of the tuning capacitor shaft with the shaft extension to the gears If C5 A B C his been removed or loosened for any reason it should be readjusted mech anically before any electricaladjustment is attempted In some cases due to
29. eapolis Minn Electronic Tube Div Elmira N Y Filmohm Corp New York N Y Cinch GraphiM Co City of Industry Calif Avnet Corp Los Angeles Calif Fairchild Sem conductor Corp Mountain View Calif Minneapolis Minn Los Angeles Calif Technical Wirk Products Springfield N J Continental Device Corp Hawthorne Calif Rheem Semiconductor Corp Mountain View Calif Shockley Semi Canductor Laboratories Boonton Radia Corp U S Engineeling Co Blinn Delberl Ca Burgess Battery Co Niagara Falls Ontario Canada Minnesota Rubber Co The Birtcher Corp Palo Alto Calif Boonton N J Los Angeles Calif Pomona Calif Sloan Compan Burbank Calif Cannon Electric Co Phoenix Div Phoenix Ariz CBS Electronics Semiconductor Operations Div of C B S Inc Lowell Mass Mel Rain Babcock Relays Inc Texas Capacilor Cn Atohm Electronics Electro Assemblies Inc Mallory Battery Co of Canada Lid The Bristol C General Transistor Western Corp Los Angeles Calif Berkeley Calif Niagara Falls N Y Berne Ind Indianapolis Ind Costa Mesa Calif Houston Texas Sun Valley Calif Chicago 111 Toronto Ontario Canada Waterbury Conn Ti Tal Inc Carborundum Go CTS of Berne Inc Chicago Telephone of California Inc e So Pasadena Calif Palo Alto Calif Santa Ana Calif Microwave Electronics Corp Duncan Inc General instrument Corporation ee Division Imperial Elec
30. ectly but does apply for settings of the AMPLITUDE control that would produce the in dicated voltage across at 600 ohm load l 1 1 zt pol xl z c z o c a SUP c A 1 1 1 1 i I l I I o LESS THAN 1 UNBALANCE NS 6 MQ le MH RQ N NN NNI RI SISSI 4 MM y SS RQ VAY OUTPUT VOLTAGE 600N LOAD m 10 100 1000 IOKC 600Kc FREQUENCY RO Figure 3 3 Balance Chart Operating into 600 ohm Load Section IV Model 200CD Figure 4 1 FEEDBACK BALANCED PUSH PULL AMPLIFIER CIRCUIT AMPL TUDE Ve CATHODE BRIDGED FOLLOWER z TEE STAGE ATTENUATOR FEEDBACK FEEDBACK POWER SUPPLY POWER SUPPLY INPUT 115 230V 50 1000 u v5 Figure 4 1 Model 200CD Block Diagram 4 0 gt 00084 3 Model 200CD Section IV Paragraphs 4 1 to 4 14 SECTION IV THEORY OF OPERATION 4 1 GENERAL 4 2 The Model 200CD Wide Range Ostillator uses a balanced push pull oscillator circuit rom which the output is taken directly avoiding the complication and possible distortion of an isolating implifier Re action of the load on the oscillator is amp voided by the use of a zero source impedance output stage This arrangement results in a simple troutile free circuit having low distortion and high stability over the entire frequency range 4 3 Functionally the circuits of the Model 200CD include a frequency controlling b
31. electri cal inspection a list of performance checks are given in section V paragraph 5 39 The e procedures make a good test as part of incoming wuality control inspection 2 6 POWER REQUIREMENTS 2 7 The Model 200CD requires a power source of 115 230 volts 41095 50 1000 cps 75 watts 2 8 POWER CABLE 2 9 This Hewlett Packard instrument is equipped with a three conductor power cable which when plug ged into an appropriate receptacle grounds the in strument The offset pin on the power cable three prong connector is the ground pin 2 10 To preserve the protection feature when oper ating instrument from a two contact outlet use a three prong to two prong adapter and connect the pigtail on the adapter to ground 2 M 230 VOLT OPERATION 2 12 The Model 200CD is normally Wired for oper ationfrom a nominal 115 volt supply Operation from 00084 2 a 230 volt source is easily accomplished by recon necting the dual 115 volt primary windings of the power transformer from a parallel configuration to a series configuration See figure 5 9 At the time of the change replace the 1 25 amp slow blow line fuse with a 0 6 amp slow blow line fuse 2 13 REPACKING FOR SHIPMENT 2 14 The following list is a general guide for re packagingan instrument for shipment If youhave any questions contact your authorized Hewlett Packard sales and service office See map in Appendix a Ifpossible use the original contain
32. er designed for the instrument b Wrap the instrument in heavy paper or plastic before placing it in the shipping container c Use plenty of packing material around ali sides of the instrument and protect the panel with cardboard strips d Use heavy cardboard carton or wooden box to house the instrument and use heavy tape or metal bands to seal the container e Mark the packing box with Fragile Delicate Instrument etc Note If the instrument isto be shipped to Hewlett Packard Company for service or repair at tach to the instrument a tag identifying the owner and indicating the service or repair to be accomplished In any correspondence be sure to identify the instrument by model num ber serial prefix and serial number Section a s Model 200CD Figure 3 1 Es and MP S 837 1 Turn on power to instrument 6 Select frequency range of operation 2 Fuse on rear of instrument 7 Jumper for 600 ohm unbalanced output 3 Glows when instrument is nergized 8 Balanced output terminals internal impedance equals 600 ohms 4 Read frequency of operatioa multiplied by RANGE switch position 9 Adjust output voltage level Output balanced i to ground only with amplitude control in full 5 Vernier adjust frequency clockwise position Figure 3 1 Controls and Terminals 3 0 00084 3 Model 200CD Section III Paragraphs 3 1 to 3 10 SECTION Ill OPERATING
33. ex coupling Window dial for curved frequency dial Assy disc vernier drive Assy Gear with coupling hub Assy Gear Assy binding post ground w link Binding post red Coupler flexible Assy power c ble Smooth black shiny 7 5 ft NEMA plug Transformer power Rector filter choke Transformer low freq output See introduction to this section var comp lin 50 K ohms 20 1 2 W var comp lin 1 K ohms 30 3 10 W 15915 71400 24455 24455 04009 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 70903 28480 72964 98734 Mfr Part No Model 2 JA1L0405502UC JJ59160 UPE 70 313 600 MDL 1 25 8A S6 12V 47 80994 11 5000 0637 3020 0600 5020 0618 5040 0212 5040 0600 5040 0607 5060 0625 5060 0633 5080 0205 KH 4096 PH 151 9100 1329 8168 D 2005 pa A pudo pul pd AAA pl EB Mode1 200CD 00084 5 Model 200CD CODE LIST OF MA APPENDIX NUFACTURERS Sheet 1 of 2 Appendix A 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 supplements used appear at the bottom of each page Alphabetical codes have been arbitrarily assigned to suppliers not appearing in the H4 handbooks Code No 00060 00136 0021
34. ica 27 pf 1095 500 vdew 14655 CM15B270K 2 0140 0054 C fxd mica 100 pf 41065 500 vdew 14655 CM20B101K 2 0140 0116 C fxd mica 39 pf de 500 vdew 14655 CM15E390G 1 0160 0024 C fxd my 0 5 uf 10 400 vdew 14655 PKM4P5 2 0180 0013 C fxd elect 100 uf 100 vdew 56289 D33067 1 0180 0017 C fxd elect 3 sect 10 uf 450 vdew 56289 D32631 1 0180 0024 C fxd aluminum elect 40 uf 450 vdew 56289 D32441 1 0340 0087 Insulator binding post black 3 hole 28480 0340 0087 1 0340 0091 Insulator binding post black 3 hole with 28480 0340 0091 1 locating key 0370 0028 Knob frequency dial vernier 28480 0370 0028 1 0370 0032 Knob AMPLITUDE 28480 0370 0032 1 fr 0370 0035 Knob RANGE 28480 0370 0035 1 gt 0370 0045 Knob frequency dial 28480 0370 0045 1 0686 1055 R fxd comp 1 M 5 1 2 W 01121 EB 1055 2 0686 6215 R fxd comp 620 ohms 45 1 2 W 01121 EB 6215 2 0687 1551 R fxd comp 1 5 M 410 1 2 W 01121 EB 1551 1 0687 5601 R fxd comp 56 ohms 10 1 2 W 01121 EB 5601 4 0689 3025 R fxd comp 3 K ohms 145 1 W 01121 GB 3025 1 0690 1531 R fxd comp 15 K ohms 410 1 W 01121 GB 1531 2 0690 1801 R fxd comp 18 ohms 10 1 W 01121 GB 1801 1 0761 0030 R fxd met flm 22 K ohms 5 1 W 07115 C32 obd 2 0761 0083 R fxd met flm 68 K ohms 5 1W 07115 C32 obd 4 0816 0002 R fxd ww 3K ohms 10 10 W 35434 Type GC10 3KA 2 0816 0003 R fxd ww 5000 ohms 10 10 W 35434 G 10 obd 2 0
35. if Cars Fastener Co Cambridge Mass New Hampshire Ball Bearing inc Peterborough Darlington S C Los Angeles Calif Springfield N J Red Bank N J Mundelein lli Brooklyn N Y Chicago Ill Dy Bois Pa Clifton N J Greenwich Conn Emporium Pa East Newark N J Chicago Hi Attleboro Mass Madison Wis Woodstock N Y Glendale Calif Pyramid Electric Co Electro Cords Co Viclory Engineering Corp Bendix Corp Red Bank Div Hubbell Corp Smith Herman H Inc Central Screw Co Gavitt Wire and Cable Co Div of Amerace Corp Burroughs Corp Electronic Tube Div Eveready Battery Mode Eng and Mfg Inc Brookfield Mass Plainfield N J New York N Y Huntington Ind Loyd Scruggs Co Festus Mo Arco Electronis inc New York N Y A J Glesener Co Inc San Francisco Calif Good All Electric Mfg Co Ogallala Neb Sarkes Tarzian Inc Bloomington Ind Boonton Molding Company Boonton N J A B Boyd Co San Francisco Calif CODE LIST OF MANUFACTURERS Sheet 2 of 2 APPENDIX Code No Manufacturer Address 85474 R M Bracamonte amp Co San Francisco Calif 85660 Koiled Kords Inc New Haven Conn 85911 Seamless Rubber Co Chicago Itt 86197 Clifton Precision Products Clifton Heights Pa 86579 Precision Rubber Products Corp Dayton Ohio B6684 Radio Corp of America RCA Electron Tube Div Harrison N J 87216 Philco Corporation Lansd
36. ing servo and vibrating systems medical and geophysical equipment audio amplifier circuits and transducers sonar and supersonic apparatus carrier telephone systems video frequency circuits and low radio frequency equipment 1 6 DIFFERENCES BETWEEN INSTRUMENTS 1 7 Hewlett Packard uses atwo section eight digit serial number 000 00000 If the first three digits of the serial number on your instrument donot agree with those on the title page of this manual change sheets supplied withthe manual will define differences between your instrument and the Model 200CD de scribed in this manual 1 8 BACKDATING SHEET 1 9 A backdating sheet that makes this manual appli cable for instruments with serial prefixes to 103 is provided in The Appendix of this manual Figure 1 1 Model 200CD Wide Range Oscillator 00084 4 1 1 1 2 NOTES Model 200CD Section II Paragraphs 2 1 to 2 14 SECTION Il PREPARATION FOR USE 2 1 INTRODUCTION 2 2 This section contains information on unpacking inspection repacking and installation o Model 200CD 2 3 UNPACKING AND INSPECTION 2 4 Unpack the instrument upon receipt and inspect it for signs of physical damage such as acratchedpanel surfaces broken knobs etc If there is any apparent damage file a claim with the carrier and refer to the warranty page in this manual 2 5 An electrical inspection should be performed as soon as possible after receipt To aid in
37. k and forth several times c Using compressed air gently blow any accumu lated dust out of the tuning capacitor plates C5 See figure 5 1 C5B RT2 C6 CSA RT V3 Mh WUT 57 00084 5 Figure 5 1 Left Side of Model 200CD as viewed from the front 5 1 Section V Paragraphs 5 5 to 5 13 5 5 TEST EQUIPMENT 5 6 Table 5 1 lists the test equipment required to accurately check the Model 200CD Equipment having similar characteristics can be Substituted for the equipment listed 5 7 TROUBLESHOOTING 5 8 The following section gives information to aid in the localizing of troubles in the Model 200CD In many cases a visual inspection of the instrument will reveal the area of the faulty comp nent if not the com ponent itself To further assist in troubleshooting table 5 2 and a voltage resistance Magram figure 5 8 have been included in this section The troubleshoot ing table 5 2 gives a list of symptoms and their Model 200CD substitution If tube substitution does not correct the difficulty return the original tube to the instrument Voltages and resistances are indicated in figure 5 8 these are typical readings and may vary somewhat from instrument to instrument 5 11 REPAIR AND REPLACEMENT 5 12 CABINET REMOVAL 5 13 To remove the Model 200CD proceed as follows a Disconnect the Model 200CD from the power source b Remove thetwo screws at the rear of the cabinet pos
38. l Insttuments Inc New Haven Conn LaGrange II Venice Calif Norwalk Conn Morristown NJ Elizabeth N J Wallingford Conn New York N Y Chicago Hl Riverside Calif Columbus 16 Ohio Defiance Ohio Monrovia Calif New York N Y Boston Mass Grayhill Co Triad Transformer Corp Winchester Electronics Co Inc FSC H4 1 H4 2 Handbook Supplements Dated DECEMBER 1964 Dated MARCH 1962 Appendix A Code No 81349 81415 81453 81483 81541 81860 82042 82142 82170 82209 82219 82376 82389 82647 82866 82877 82893 83053 83058 83086 83125 83148 83186 83298 83315 83330 83385 83501 83594 83740 83277 83821 84171 84336 84411 84970 85454 85471 Manufacturer Address Military Specification hye Wilkor Products tnc Cleveland Ohio Raytheon Mig Co Industrial Components Div Industt Tube Operations Newton Mass Internationa Rectifier Corp Ei Segundo Calif The Airpax Products Co Cambridge Mass Barry Controls Inc Watertown Mass Carter Parts Co Skokie IIl Jetfers Electronics Division of Speer Carbon Co Allen B DuMont Labs Inc Maguire Industries Inc Sylvania Electric Prod Inc Electronic Tube Div Astron Co Switchcraft Inc Metals and Controls Inc Div of Texas Instruments Ine Spencer Prods Research Products Corp Rotron Manufacturing Co Inc Vector Electronic Western Washer Co Los Angetes Cal
39. lahabad 1 Tel 2451 The Scientific Instrument Company Ld 240 Dr Dadabhai Naoroji Rd Bombay 1 Tel 26 2642 The Scientific Instrument Company Ld 11 Esplanade East Calcutta 1 Tel 23 4129 The Scientific Instrument Company Ld 30 Mount Road Madras 2 Tel 86339 The Scientific Instrument Company Ld B 7 Ajmeri Gate Extn New Delhi 1 Tel 271053 IRAN Telecom Ltd P O Box 1812 Tehran Tel 43850 ISRAEL Electronics amp Engineering Ltd 16 Kremenetski St Tel Aviv Tel 35021 2 3 ITALY Hewlett Packard Italiana S p A Viale Lunigiana 46 Milan Tel 69 15 84 5 6 Hewlett Packard Italiana S p A Palazzo Italia Piazza Marconi 25 Roma Eur Tel 59 12 544 5 JAPAN Yokogawa Hewlett Packard Ltd 2270 Ishikawa cho Hachioji Tokyo Tel Hachioji 0426 3 1231 19 lines Yokogawa Hewlett Packard Ltd No 3 6 chome Aoyama Kitamacht Akasaka Minato ku Tokyo Tel 403 6511 Yokogawa Hewlett Packard Ltd No 8 Umeda Kita ku Osaka Tel 313 0091 Yokogawa Hewlett Packard Ltd No 4 3 chome Himeikedori Chigusa ku Nagoya Tel 751 8545 KOREA American Trading Company Korea Ltd 112 35 Sokong Dong Jung ku Seoul P O Box 1103 Seoul Tel 3 7049 3 7613 NETHERLANDS Hewlett Packard Benelux N V 23 Burg Roellstraat Amsterdam W Tel 020 13 28 98 and 13 54 99 NEW ZEALAND Sample Electronics N Z Ltd 8 Matipo Street Onehunga S E 5 Auckland Tel 565 361 NORWAY Morgenstierne amp Co A S Inge
40. les Calif Los Angeles Calif Milwaukee Wis Beverly Hills Calif Lawndale Calif Dallas Texas Alliance Ohio Indianapolis Ind Van Nuys Calif Rockford II Santa Clara Calif Saugerties N Y Old Saybrook Conn Hopkins Engineering Co San Fernando Calif G E Semiconductor Products Dept Syracuse Apex Machine amp Toni Co Dayton Ohio Eldema Corp Et Monte Calif Transitron Electronic Corp Wakefield Mass Pyrofiim Resistor Co Morristown N H Air Marine Motors Inc Los Angeles Calif Hart and Hegeman Elect Co Hartford Conn Lambertvitle N Jj New York N Y Myrtle Beach S C Taurus Corp Eimenco Products Co Hi Q Division of Aerovox Elgin National Watch Co Electronics Division Burbank Calif Precision Paper Tube Co Chicago IH Dymec Division of Hewlett Packard Co Palo Alto Calif Sylvania Electric Prods Inc Electronic Tube Div Mountain View Calif Motorola Inc Semiconductor Prod Div Phoenix Arizona Filtron Co Inc Western Div Culver City Calif Automatic Electric Co Northlake IH Automatic Electric Sales Corp Northlake 111 Sequoia Wire amp Cable Co Redwood City Calif Precision Coil Spring Co El Monte Calif P M Motor Company Chicago 44 111 Twentieth Century Plastics Inc Los Angeles Calif Westinghouse Electric Corp Semi Conductor Dept Ultronix Inc Hbumitronic Engineering Co Cosmo Plastic coo Electrical Spec Co Ba
41. mesh Continue this pro cedure to the low end of the dial to obtain approximately correct frequencies Repeat the bending procedure from the high end this time making fine adjustments of frequency with the other outer rotor plates In this way bending of any one plate is minimized 5 36 When bending rotor plates observe the follow ing precautions 1 keep all bends as near the shaft as possible 2 keep all segments in line The rotor plates should taper gradually inward or outward de pending on whether you must compress or expand the 00084 2 Model 200CD frequency range This gradual taper is essential for linearity 3 Bending of plates near ths high frequency end should be unnecessary 5 37 DISTORTION a Connect the Model 200CD to the listortion ana lyzer as shown in figure 5 6 b Set the Model 200CD RANGE to X1 and the fre quency dial to 20 c The distortion analyzer switches should be in the following positions AS Rn PREQUENEY er tH NOTES 20 Selector Sita sa TE SET LEVEL RMS VOLTS DB switch 20db d Adjust distortion analyzer INPUT control for a zero db reference on the distortion analyzer meter e Switch selector to DISTORTION f Adjust BALANCE and FREQUENCY controls for a dip on the meter g Turn RMS VOLTS DB switch co nterclockwise while continually adjusting distortion analyzer BAL ANCE and FREQUENCY until the low st possible dip is obtained h Adjust
42. ndicated in the text 4 Tighten the four securing screws Center knob may be replaced at the end of this procedure c If it was necessary to slip the dial repeat steps a through h in paragraph 5 33 d lf step c was necessary repeat step b Itis possible that the entire dial will now track without further adjustment e Checkall numbered points on the dial beginning at the highend If some points exceed test limits 42 try to equalize the error by slipping the dial to get all points within these limits f Switch RANGE to X10K and set the Model 200CD frequency dial to 60 g Adjust C7 to put 600 kc on frequency h Check calibration onthe remaining ranges Cal ibration should be correct to 2 Note It wil be advantageous to set the counter FUNCTION SELECTOR to 10 PERIOD AV ERAGE when measuring frequency on the X1 range refer to table 5 4 Table 5 4 Frequency Period Conversion Perdu Frequency Limits Period Limits eps 5 5 1 196 0 ms 4 9 204 0 ms 10 10 2 098 0 ms 9 8 102 0 ms 20 20 4 049 0 ms 19 6 051 0 ms 40 40 8 024 5 ms 39 2 025 5 ms 60 61 2 016 3 ms 58 8 017 0 ms 5 35 If the above procedures do not result incorrect calibration start over by adjusting C3 and or C6 as in step a through h paragraph 5 33 Then work toward the low end by setting the dial to the next numbered point and bending one of the outer rotor plates in each section of C5 at the point of
43. nic part MP mechanical part TE thermocouple Z network ABBREVIATIONS Ag silver ID inside diameter ns nanosecond s 107 SPDT single pole double Al aluminum impg impregnated nsr not separately replace throw amp ampere s incd incandescent able SPST single pole single Au gold ins jinsulation ed throw E capacitor _4n 3 obd order by description Ta tantalum cer ceramic K kilohm s 10 OD outside diameter TiO titanium dioxide BA 3 2 coef coefficient Ke kiloycycle s 10 peak tog toggle Som SECO printed circuit tol tolerance comp composition E inductor pe pr 12 e Eoi conn connection lin linear taper pf picofarad s 10 ae ES ESSE cps cycles per second log logarithmic taper piv peak inverse voltage E B E p o part of v volt s AT E e doubles m milli 10 position s vacw alternating current throw ma milliampere s 107 DPST an single Mc megacycle s 1978 p p peak to peak vdew direct current working diss E 46 prec precision temperature volt s meg megohm s 10 elect electrolytic met fim Metal film coefficient long term encap encapsulated mir Z anata ciiear stability and or tol w watt s E erance w with La t transistor TE Alcea e wiv reverse working voltage I N m micro 10 y w o without fxd fixed R resistor st Anes d my Mylar Rh rhodium A eet GaAs g
44. niorfirma 6 Wessels Gate Oslo Tel 20 16 35 For Sales and Service Assistance in Areas Not Listed Contact IN LATIN AMERICA Hewlett Packard Inter Americas 1501 Page Mill Road Palo Alto California 94304 U S A Telephone 415 326 7000 TWX 910 373 1267 Telex 033811 Cable HEWPACK Model 200CD PANAMA Electronico Balboa S A P 0 Box 4929 Panama City 5 Panama Tel 3 0833 PERU Fernando Ezeta B Casilla 3061 Lima Tel 78745 PORTUGAL TELECTRA Rua Rodrigo da Fonseca 103 P 0 Box 2531 Lisbon 1 Tel 68 60 72 and 68 60 73 and 68 50 74 PUERTO RICO amp VIRGIN ISLANDS San juan Electronics Inc 150 Ponce de Leon Stop 3 P O Box 5167 Pta de Tierra Sta San Juan 00906 Tei 725 3342 724 4406 SPAIN ATAIO Ingenieros Enrique Larreta 12 Madrid 6 Tel 235 43 44 and 235 43 45 SOUTH AFRICA F H Flanter amp Co Pty Ltd Rosella House Buitencingle Street Cape Town Tel 3 3817 SWEDEN H P Instrument AB Centralvagen 28 Solna Centrum Tel 83 08 30 P Instrument AB Idunagatan 28A Goteborg Tel 27 68 00 and 27 68 01 SWITZERLAND Max Paul Frey Wankdorffeldstrasse 66 Berne Tel 031 42 00 78 TAIWAN FORMOSA Hwa Sheng Electronic Co Ltd 21 Nanking West Road Taipei Tel 4 6076 4 5936 TURKEY TELEKOM Engineering Bureau P 0 Box 376 Galata Istanbul Tel 49 40 40 UNITED KINGDOM Hewlett Packard Ltd Dallas Rd Bedford England Tel Bedford 68052 VENEZUELA Citec C
45. nt 2 1 5 31 Calibration 5 4 5 37 Distortion 5 7 Section Page 5 38 Output Voltage 5 7 II OPERATING INSTRUCTIONS 3 1 5 39 Performance Check 5 7 3 1 Introduction A 3 1 5 41 Output Impedance 5 7 3 3 Operation 2 soe nos U e W 3 1 5 42 Frequency Response 5 7 5 43 Dial Accuracy 5 7 Section Page 5 44 Distortion 5 8 IV THEORY OF OPERATION 4 1 4 1 General 4 1 Section Page 4 4 Frequency Controlling Bri e 4 1 VI REPLACEABLE PARTS 6 1 4 0 Amplifier 4 1 6 1 Introduction 6 1 4 11 Output Circuit 4 1 6 4 Ordering Information 6 1 6 7 Non Listed Parts 6 1 Section Page V MAINTENANCE oS BPE ENDS 3 5 1 Introduction EIER er er A CODE LIST OF MANUFACTURERS 5 3 Periodic Maintenance malt OS 5 5 Test Equipment i 5 2 B SALES AND SERVICE OFFICES 5 7 Troubleshooting 5 2 C MANUAL BACKDATING CHANGES LIST OF ILLUSTRATIONS Figure Page Figure Page 1 1 Model 200CD Wide Range 5 3 Range Switch Detail 5 5 3 1 Controls and Terminals er 5 4 Calibration Test Setup 5 6 3 2 Typical Output Connections 3 1 5 5 Alternate Calibration Setup 5 6 3 3 Balance Chart Operating Into 5 6 Distortion Test Setup 5 7 600 Ohm Load eis 5 7 Bottom View Model 200CD 5 8 5 8 Section 1 Table 1 1 FREQUENCY RANGE RANGES ACCURACY DIAL FREQUENCY RESPONSE OUTPUT OUTPUT BALANCE INTERNAL IMPEDANCE DISTORTION HUM VOLTAGE POWER ACCESSORIES AV
46. odel 200CD Paragraph 5 44 5 44 DISTORTION f Adjust BALANCE and FREQUENCY controls for I a dip on the meter a Connect the Mode1200CDto adistortionanalyzer as shown in figure 5 6 g Turn RMS VOLTS DB switch counterclockwise while continually adjusting distortion analyzer BAL b Set Model 200CD RANGE switch and frequency ANCE and FREQUENCY until the lowest possible dip dial to one of the frequencies indicated in table 5 5 is obtained Specifications are listed in table 5 5 c The distortion analyzer switches should be set to the following positions Table 5 5 Distortion Test Frequencies DER see SE N EEE RR AF F E FREQUENCY incoming frequency selected in step b 5 eS ey Specifications selector switthy Te teo ES lo ara ceo Pi EEVEE X10 100 cps 54 db RMS VOLTS DB cls m mentes 20 db X100 1000 cps 54 db d Adjust distortion analyzer INPUT control for a X100 6 kc 54 db zero db reference on the distortion analyzer meter X1K 5k b e Switch selector to DISTORTION DE 2 TI RID CT RIZ R22 Si CALIBRATE MP S BOSB RII OUTPUT VOLTS L6 CI2 R25 CIO R23 R28 ADJUST C9 R39B R39A Figure 5 7 Bottom View Model 200CD 4 If the measurement of distortion above the frequency of 20 ke is desired a distortion analyzer which will measure distortion to 600 kc must be used such i s Model 331A At 500 and above the distortion must be down 46 db from reference 0
47. onic Dial springs back when turned clockwise against the stop Tuning capacitor closed too far when fully meshed Impossible to set low end on frequency Dial springs back when turned counterclockwise against the stop Tuning capacitor open too far when fully meshed Calibration bad on one range only Dirty RANGE switch contacts C1 2CT1 or C16 need adjusting One RANGE switch resistor has changed resistance R50 or R51 mis adjusted T1 defective R50 or R51 mis adjusted T2 defective Excessive distortion on X1K X10K ranges Excessive distortion on X1 X10 and X100 ranges V1 V4 defective RT1 RT2 defective Dust between tuning capacitor plates Excessive distortion on all ranges Impossible to set 11 5 v Fi out with 200CD terminated with 600 ohms adjustment procedure RT1 RT2 defective V1 V4 weak 00084 4 Model 200CD Section V Paragraphs 5 14 to 5 17 5 14 SERVICING ETCHED CIRCUIT BOARDS Table 5 3 Tube Replacement List Note BE z Required Checks Excessive heat or pressure cah lift copper Function conductors from etched circuit boards 5 15 To remove components from board clip leads Voltage Recheck calibration on component side of board New components can then Amplifier and distortion be soldered to the leads extending from the board or the leads can be removed If l
48. ose Street Glebe N S W Tel 69 6338 6 lines AUSTRIA UNILABOR H m b H Wissenschaftliche Instrumente Rummelhardtgasse 6 3 0 Box 33 Vienna 1X 71 Tel 42 61 81 BELGIUM Hewlett Packard Benelux 20 24 Rue de Hopitat Brussels 1 Tel 11 22 20 BRAZIL Ciental Importacao e Comercio Ltda R Des Eliseu Guilherme 62 Sao Paulo 6 Tel 32 4332 CHILE Hector Calcagni Casilla 13942 Santiago Tei 6 42 26 COLOMBIA Instrumentacion Henrik A Langebeck 8 Cia Ltda Apartado Aereo 6287 Bogota 1 DE Tel 45 78 06 Cable AARIS Bogota DENMARK Tage Olsen A S Ronnegade 1 Copenhagen O Tel 29 48 00 FINLAND INTO 0 Y P O Box 153 11 Meritullinkatu Helsinki Tel 6 11 33 FRANCE Hewlett Packard France 150 Blvd Massena Paris 13e Tel 707 97 19 GERMANY Hewlett Packard VembH Steindamm 35 Hamburg 1 Tet 24 05 51 Hewlett Packard VgmbH Kurhessenstrasse 95 Frankfurt a Main Tet 52 00 36 Hewlett Packard VembH Reginfriedstrasse 13 Munich 9 Tel 49 51 21 2 Hewlett Packard VgmbH Technisches Buro Herrenbergerstrasse 110 703 Boblingen Wurttemberg Tel 6971 Hewlett Packard VgmbH Lietzenburger Strasse 30 1000 Berlin 30 Tel 24 92 71 IN EUROPE Hewlett Packard S A 54 Route des Acacias Geneva Switzerland Telephone 022 42 81 50 Telex 2 24 86 Cable HEWPACKSA GREECE K Karayannis Klaftmonos Square Athens 124 Tel 230 301 INDIA The Scientific Instrument Company Ld 6 Tej Bahadur Sapru Road Al
49. rber Colman Co T ffen Optical Co Roslyn Heights Long Island Metropalilan Telecommunications Corp Metro Cap Division Brooklyn N Y Stewarl Engineering Co Santa Cruz Calif Wakefield Engineering Inc Wakefield Mass The Bassick Co Bridgeport Conn Bausch and Lomb Optical Co Rochester N Y E T A Products Co of America Chicago tll Western Devices Inc Inglewood Calif Amatom Electronic Hardware Co Inc New Rochelle N Y Beede Electrical Instrument Co Inc Penacook N H U S Semcar Division of Nuclear Corp of America Phoenix Arizona Torrington Mig Co West Div Van Nuys Calif Kelvin Electric Co Van Nuys Calif Youngwood Pa San Mateo Calif Sunnyvale Calif Cleveland Ohio Rockford 11 Code No 07115 07126 07137 07138 07149 07233 07261 07263 07322 07387 07700 07910 07933 07966 07980 08145 08289 08358 08717 08718 08792 08984 09026 09134 09145 09250 09569 09664 10214 10411 10546 11236 11237 11312 11534 11711 11717 11870 12136 12697 12859 12930 13103 13396 13835 14099 14193 14298 14655 14960 15203 15291 15772 15909 16037 16352 16688 16758 17109 17474 18486 18583 18873 19315 19500 19701 20183 21226 21520 21335 21964 24446 Address Corning Glass Works Electronic Components Dept Digitran Co Transistor Electronics Corp Westinghouse Electric Corp Bradford Pa Pasadena Calif Minn
50. re 5 3 RangeSwitch Detail 00084 4 5 5 Section V Paragraphs 5 33 to 5 36 e If 600 cps is off more than 2 set the frequency on with C6 Note Since replacing the cabinet raises the fre quency slightly it is advisable to set the frequency slightly low e g 599 cps when making this adjustment f Observe the output voltag and determine how much it differs from the reference g Adjust C3 to correct for half this difference Then adjust C6 so that the output frequency is again 600 cps h Observe the output voltag If it is more than 1 4 db from the reference in step c repeat steps c through h until a flat response is obtained with 600 cps set on frequency see note above 5 34 FREQUENCY DIAL TRACKING a Switch Model 200CD RANGE to X100 Connect the equipment as shown in figur s 5 4 or 5 5 b Check the frequency at 5 The frequency read ing should be 500 cps 29 If the frequency is off more than 2 slip the dial to put it on frequency 1 Remove center knob on frequency dial 2 Loosen the four screws Which secure the dial plate to the drive shaft dp dip 4000 WIDE RANGE VACUUM TUBE OSCILLATOR VOLTMETER dip 523C D EUECTRONIC COUNTER 60 ON RESISTOR Figure 5 4 Calibration Test Setup E OSCILLATOR VOLTMETER FREQUENCY STANDARD RESISTOR OPTIONAL us Figure 5 5 Alternate Calibration Setup 5 6 Model 200CD 3 Reset dial to position i
51. replaced be fore attempting any adjustment Proceed as follows 5 28 POWER SUPPLY a With the instrument turned off check the resis tance from C13 to ground and the resistance across C13 This resistance is typically many megohms A very low reading below 100K indicates a shorted or leaky capacitor between the B line and ground b Turn the instrument on an allow it to warm up for at least 15 minutes 9 4 Model 200CD c Check to see that all tubes are glowing d Using an dc electronic voltmeter measure the positive and negative power supply voltages using ground as a reference The positive voltage approxi mately 225 volts may be measured between the chassis and C14 The negative voltage approximately 155 volts is measured from the chassis to the junction of R30 R31 and R40 figure 5 2 The difference between the negative and positive voltage should be 380 volts 70 volts 5 29 AMPLITUDE CONTROL OPERATION a Witha 600 ohm load connected to the OUTPUT terminals and the Model 200CD output connected to the ac voltmeter set the Model 200CD RANGE to X100 b Turn the Model200CD AMPLITUDE fully clock wise If necessary adjust R11 to obtain 12 vac c Now while observing the voltmeter indication and switchingto lower voltmeter ranges as necessary slowly turn the Model 200CD AMPLITUDE fully coun ter clockwise Notethe voltmeter reading again The attenuation should be smooth and the final reading sho
52. ric Co Inc Weckesser Co Huggins Laboratories Hi Q Division of Aerovox Olean Thordarson Meissner Div of Maguire Industries lac Mt Carmel Ill Solar Manufacturing Ca Los Angeles Calif Carlton Screw Co Chicago Ill Microwave Associates Inc Excel Transformer Co Industrial Retaining Ring Co Automatic and Precision Mfg Co Yonkers N Y Burlington Mass Oakland Calif Irvington N J CBS Electronics Div of C B S Inc Reon Resistor Corp Axel Brothers Inc Rubber Teck Inc Danvers Mass Yonkers N Y Jamaica N Y Gardena Calif Code No 98220 98278 48291 98405 98731 98821 98925 98978 99109 99313 99515 99707 99800 99848 99934 99942 99957 Model 200CD Manufacturer Address Francis L Mosley Microdot Inc Sealectro Corp Carad Corp General Mills North Hills Electric Co Clevite Transistor Prod Div of Clevite Corp international Electronic Research Corp Columbia Technical Corp Varian Associates Marshall Industries Electron Products Division Pasadena Calif Control Switch Division Controls Co of America El Segundo Calif Delevan Electronics Corp East Aurora Wilco Corporation Indianapolis Ind Renbrandt Inc Boston Mass Hoffman Semiconductor Div of Hoffman Electronics Corp Technology Instrument Corp of Calif Pasadena Calif So Pasadena Calif Mamaroneck N Y Redwood City Calif Minneapolis Minn Mineola N Y Waltham
53. ridges and balanced push pull amplifier which constitute the oscillator circuit an output circuit which may be trranged either for balanced or unbalanced operation and a power supply circuit These are shown in block diagram form in figure 4 1 and in detail in the schematic diagram 4 4 FREQUENCY CONTROLLING BRIDGE 4 5 The frequency controlling circuit is arranged as a floating bridge symmetrical with respect to ground With no connection to ground on any terminal of the bridge stability of calibration is assured since any stray capacity or leakage to ground Present at the bridge output terminals does not shlint either the frequency controlling or amplitude st bilizing arms ofthe bridge The frequency controlling components RC networks which are varied by operation of the RANGE switch and frequency dial com risetwoarms of the bridge while the amplitude stabilizing com ponents a voltage divider which includes a thermally sensitive resistance comprise the other two arms The amplitude is stabilized at such a level that the amplifiertubes are operatedinthe substantially linear portion of their characteristics which together with the large negative feedback at harmonie frequencies results in a very pure sine wave oscillition 4 6 The bridge is fed by the balanced voltage developed at the cathodes of V2 and V4 inthe output f the balanced amplifier The output of the frequeacy controlling branchof the bridgeis applied tothe gri
54. ription MISCELLANEOUS Knob frequency dial vernier Knob AMPLITUDE Knob RANGE Knob frequency dial 2 1 4 Shield tube for V2 V4 Lampholder bayonet Lampholder candelabra Spring gear ass y Flexible coupler Spring thrust vernier drive Hub dial fits on shaft of 5020 0617 Gear spur with shaft Bearing capacitor drive Insulator flex coupling Window dialfor curved frequency dial Assy disc VERNIER DRIVE Shield base 9 pin Assy gear with coupling hub Assy gear Coupler flexible Dial frequency calibrated Manual operating and service CEDE SETTE PI IRIS H d 6 4 See introduction to this section 00084 4 Model 200CD Section VI Table 6 2 Table 6 2 Replaceable Parts gt dE Stock No pec meum Mfr Mfr Part No TQ 200CD 9 Transformer high frequency 28480 200CD 9 1 200CD Assy range switches includes 28480 200CD 19WB 1 19WB Ch 62 616 R33 R34 R37 R38 L4 L5 R42 thru R45 R1 thru R10 si 200CD 40A Dial frequency calibrated 28480 200CD 40A 1 200CD 60C Coil RF 28480 200CD 60C 2 0121 0018 C var 3 sect 14 617pf sect 28480 0121 0018 1 0130 0001 C var cer 7 45 pf 500 72982 503 000D2PO 33R 2 0130 0011 C var cer 1 5 7 pf 500 vdew 72982 557 023 COPO 10R 1 0140 0004 C fxd mica 15 pf 10 500 vdew 72136 CM15B150K 1 0140 0005 C fxd m
55. s 93369 Robbins and Myers Inc New York N Y 93410 Stevens Mfg Co Inc Mansfield Ohio 93788 Howard J Smith Inc Port Monmouth N J 00015 Revised February 1965 Code Ne 93929 93983 94137 94144 94145 94148 94154 94197 94222 94310 94330 94682 95023 95236 95238 95263 95264 95265 95275 95348 95354 95712 97979 98141 98159 Manufacturer Address G V Controls Insuline Van Norman Ind Inc Electronic Division Manchester N H General Cable Corp Bayonne N J Raytheon Mfg Co Industrial Components Div Receiving Tube Operation Quincy Mass Raytheon Mfg Co Semiconductor Div California Street Plant Newton Mass Scientific Radio Products Inc Loveland Colo Newark N J Livingston N J Tung Sol Electric Inc Curtiss Wright Corp Electronics Div East Paterson Southco Div of S Chester Corp Lestet Pa Tru Ohm Prod Div of Model Engineering and Mig Co Chicago MI Wire Cloth Products Inc Chicago Ill Worcester Pressed Aluminum Corp Worcester Mass Boston Mass Miami Fla Woodside N Y New York N Y Burbank Calif Sheridan Wyo Bridgeport Conn Bloomfield N J Chicago III Franklin Ind Chicago Ul Sunnyvale Calif Philbrick Researchers Inc Allies Products Corp Continental Connector Corp Leecraft Mtg Co Inc Lerco Electronics Inc Nationa Coil Co Vitramon Inc Gordas Corp Methode Mfg Co Dage Elect
56. s Instrument Serial No Output Transformer hp Part No 1 thru 833 Ty is 9120 0011 Tg is 9120 0010 ay thru 853 T is 9120 0015 To is 9120 0016 854 thru 903 Ty is 9120 0011 Ta is 9120 00107 904 thru 3637 Ty is 9120 0015 T is 9120 0016 3638 and above Ty is 200CD 9 To is 9120 0016 There are some exceptions If R37 and R38 on the range switch are 100 ohms use 9120 0010 if R37 and R38 are 200 ohms use 9120 0016 Appendix C Model 200CD Manual Changes Model 200CD Page 4 Instrum Serial Prefix Make Manual Changes Instrument Serial Prefix Make Manual Changes A 7 EA CHANGE 8 Section VI and Figure 5 9 i Delete CR1 and CR2 Change T3 power transformer to hp Part No 9100 0036 Add the following V5 Tube elect 5AR4 hp Part No 1930 0003 XV5 Socket tube octal hp Part No 1200 0020 Change Table 1 1 Specifications to the following DISTORTION Less than 0 5 below 500 ke less than 1 500 ke and above Independent of load impedance The following partial schematic shows Power Supply changes YEL 215 GRN BLU BLU YEL RED BLU 200CD 903 PRINTED IN U S A
57. sible causes 5 9 AMPLIFIER POWER SUPPLY 5 10 Amplifier and power supply operation is best checked by voltage resistance readings and tube Table 5 2 ee Symptom Probable Cause C14A B C leaky C11 leaky C1 11 shorted Resistance to ground less than 100K ohms Tubes not glowing pilot Blown fuse Fi light out 52 Jefective On or more tubes burned out One or more tubes not glowing pilot light on C13A B C or C14 breaking down under high voltage V5 defective Vi V4 shorted Power supply voltage variation exceeds test limit nn Impossible to set 200CD output to 20 volts unloaded V1 V4 defective RT1 RT2 defective With RANGE set to X1 T2 defective X100 ranges and output set to 20 volts rms ad dition of 600 ohm termi nation does not lower output to 10 volts 0 5 Same as above with T1 defective RANGE set at X1K or X10K wp e R3 AMPLITUDE ontrol defective Turning AMPLITUDE control causes jumpy output Recovery time exceeds V1 V3 defective test limit RT RT2 defective CET Ir A D 5 2 The Model200CDR rack mount unit has two additional screws on the front panel which must be removed c Carefully slide the instrument forward out of the cabinet Troubleshooting Symptom Probable Cause V1 V4 defective RT1 RT2 defective Tuning capacitor dirty or defective 200CD obviously micro ph
58. slippage the tuning capacitor will not mesh far enough to allow perfect calibration at the extreme low end of the dial When correctly set the edge of the insulation protruding from the rotor plate spacer on C5 should line up with the top most stator spacer whenthe dial i set fully clockwise 5 22 RANGE SWITCH REPAIR 5 23 Resistor values on S1 been carefully bridged and adjusted at the factory to the exact value required for proper tracking on all ranges If one range is found to be badly out f calibration and all other possibilities have been exhausted especially dirty RANGE switch contacts try adjusting the value of C1 C2 C7 or C16 depending on the range affected slightly If any part of the RANGE switch is found to be defective it is recommende that the switch be replacedas an assembly Figure 5 3 shows all wiring detail for replacement 5 24 ADJUSTMENTS 5 25 The following section is a3 Complete adjustment procedure and should be made onlyif it has been def initely determined that the Model 200CD is out of ad justment Note In orderto minimize the effects of hand cap acity a tuning wand or tuning screwdriver with a plastic shank should be used for all adjustments 5 26 PRELIMINARY CHECKS 5 27 The following basic tests are given to avoid possible unnecessary adjustment of the Model 200CD If the instrument fails any of there tests some com ponent is probably at fault and should be
59. stor such asthe f9Model 470E Shunt Resistor across output of Model 200CD f The voltage as read on the voltmeter should drop to 10 volts 0 5 volts 5 42 FREQUENCY RESPONSE a Connect the Model 200CD to an ac voltmeter and an electronic counter as shown in figure 5 4 Sub stitute an actransistor voltmeter for the ac electronic voltmeter in figure 5 4 b SetModel200CD RANGE to X100 frequency dial to 10 Terminate output with 600 ohms c Adjust Model 200CD AMPLITUDE for a conven ient reference around 0 9 on the voltmeter scale d Starting with the X1 range rotate the frequency dial across the band while observing the meter e Repeat this process for each range The volt meter indication should not vary more than 1 db throughout the ranges checked 5 43 DIAL ACCURACY a Set Model 200CD RANGE to X10K frequency dial to 60 Observe the frequency reading on the electronic counter b Check frequency at 40 20 10 and 5 onthe dial C Repeat this procedure for the remaining ranges The frequency should be correct within 2 Note For the lower end of the X10 range and the entire X1 range 1t will be advantageous to measure the frequency indirectly by switch ing the electronic counter FUNCTION SE LECTOR to 10 PERIOD AVERAGE Table 5 4 lists the specifications interms of period readings for each point on the X1 range To check X10 range divide the period limit in table 5 4 by 10 5 7 Section V M
60. ttonic Inc Melabs inc Newark N J Buena Park Calif Palo Alto Calif Philadelphia Handle Co Camden N J Clarostat Mfg Co Dover Nippon Electric Co Ltd Tokyo Japan Delta Semiconductor Inc Thermoltoy Telefunken G M B H Midland Mig Po Newport Beach Calif Dallas Texas Hannover Germany Kansas City Kansas Sem Tech Newbury Park Calif Calif Resistor Corp Santa Monica Calif American Components Inc Conshohocken Pa Cornel Dubiliks Elec Corp So Plainfield N J Williams Mfg Co San Jose Calif Webster Electronics Co Inc Brooklyn N Y Adjustable Sushing Co N Hollywood Calif Twentieth Century Coii Spring Co The Daven Ca Spruce Pine Mica Co Computer Diode Corp De Jur Amsco Corporation Santa Ciara Calif Livingston N J Spruce Pine N C Lodi N J Long istand City 1 N Y Delco Radio Div of G M Corp Kokomo Ind Thermonetics Inc Canoga Pask Calif Tsanex Company Mountain View Calif Radio Industries Des Plaines 11 Curtis Instrument inc Mt Kisco N Y E l DuPont and Co Inc Wilmington Dei Eclipse Pioneer Div of Bendix Aviation Corp Thomas A Edison Industries Div of Mchraw Edison Co West Orange N J Electra Manufacturing Co Kansas City Mo Electronic Tube Corp Philadelphia Pa Teterboro N J Executive Ind New York N Y Fansteel Metallurgical Corp No Chicago Ill The Fafn r Searing Co New Britain Conn Fed Telephone and
61. ty and leakage resistance will cause less than 0 195 unbalance Unbalance at 600 kc is approximately 1 4 14 Whenit is desired to operate unbalanced ground should be connected to the center output terminal the termination forthe connectionbrought out from term inal 6 of output transformers 1 and T2 Proper op eration cannot be obtained if the ground is connected to the side of the circuit which includes the attenuator 4 1 Section V Table 5 1 Instrument Type DC Electronic Voltmeter AC Transistor Voltmeter AC Electronic Voltmeter Distortion Analyzer 600 ohm Resistor Electronic Counter or Frequency Standard and Optional recommended Oscilloscope 5 0 Model 200CD Table 5 1 Test Instruments Required Recommended Minimum Required Specifications Sensitivity 1 volt full scale minimum Model 410B or 412A Vacuum Tube Voltmeter Input resistance 10 megohms or higher Input impedance 2 megohms shunted by 40 pf below the 0 3 volt range 3 from 5 cps to 500 ke Model 403A Transistor Voltmeter Acuuracy Input impedance 10 megohms shunted by 25 pf below the 0 3 volt range 2 from 20 cps to 1 mc Model 400D H L Vacuum Tube Voltmeter Acuuracy Distortion measurement range Sensitivity 5 cps to 600 ke 54 db down from rated output Model 331A or Model 330B 20 kc max range Distortion Analyzer
62. uld be at least 46 db below the reference in step b 5 30 RECOVERY TIME a Switch RANGE to X10 and frequency to 50 kc b Connect the output of the Model 200CD to an oscilloscope c Switch from range to range observingthe oscil loscope pattern after range switching d The oscilloscope presentation should become Stable within 5 seconds after switching ranges 5 31 CALIBRATION 5 32 Thecalibration procedure for the Model 200CD is divided into two sections The first section para graph 5 33 is intended to produce a flat frequency response for the Model 200CD and is accomplished with the instrument set on the X10 range The second section paragraph 5 34 is intended to produce cor rect frequency dial tracking and is accomplished with the instrument set on the X100 range 5 33 FREQUENCY RESPONSE ADJUSTMENTS a Turn Model 200CD RANGE to X10 frequency dial to 5 b Connect the Model 200CD to an ac voltmeter and a frequency measuring device counter or fre quency standard as shown in figure 5 4 c Using Model 200CD AMPLITUDE set a refer ence of 9 volts as read on the ac voltmeter d Turn the frequency dial to 60 The ac volt meter should read within 41 4 db of the reference in step c and the frequency should be correct within 2 00084 4 Model 200CD Section V Figure 5 3 RIO O GRN Ed TO C5A R38 R44 ORN TO PINS TO PIN 6 YEL TI TO PIN 6 ET T R38 10 L 4438 Figu
63. xd comp 15 K ohms 10 1 W R37 R38 Nsr part of Al R39A B 2100 0113 R var comp dual tandem 100 K sect 25 K sect 2 W R40 0816 0008 R fxd ww 10 K ohms 107 10 W R41 0690 1801 R fxd comp 18 ohms 10 1W R42 thru R45 Nsr part of Al R46 R47 0686 6215 R fxd comp 620 ohms 5 1 2 W R48 R49 Not assigned R50 2100 0013 R var comp lin 50 K ohms 20 1 2 W R51 2100 0036 var comp lin 1 ohms 0 5 W 2140 0007 Lamp incd 250 V 10 W Nsr part of A1 3101 0001 Switch tog SPST 3 amp 200CD 9 Transformer output high frequency 9120 0016 Transformer output low frequency 9100 1329 Transformer power 1923 0021 Tube elect 6AU6 7 pin minat 1923 0044 Tube elect EL 86 9 pin minat 1923 0021 Tube elect 6AU6 7 pin minat 1923 0044 Tube elect EL 86 9 pin minat 1400 0084 Fuseholder extrator post type 1200 0009 Socket tube 7 pin minat 1200 0072 Socket tube 9 pin 1200 0009 Socket tube 7 pin minat 1200 0072 Socket tube 9 pin See introduction to this section 00084 3 6 3 section VI Table 6 1 Model 200CD Table 6 1 Reference Designation Index Cont d Circuit Reference tp Stock No 0370 0028 0370 0032 0370 0035 0370 0045 1220 0006 1220 0029 1450 0009 as 1460 0114 1500 0002 5000 0637 5020 0600 5020 0617 5020 0618 5040 0212 5040 0600 5040 0607 5060 0020 5060 0021 5080 0205 200CD 40A 200CD 903 Desc

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