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Summary of Contents for 209A

Page 1: ...HP Archive This vintage Hewlett Packard document was preserved and distributed by www hparchive com Please visit us on the web On line curator Thomas Chrapkiewicz ...

Page 2: ... Ol o N ll I OPERATING AND SERVICE MANUAL SINE IS QUARE OSCILLATOR 209A HEWLETT PACKARD www HPARCHIVE com I N o IQ ...

Page 3: ...terials and workmanship This warranty applies for one year from the date of delivery or in the case of certain major compo nents listed in the operating manual for the specified period We will repair or replace products which prove to be defective during the warranty period provided they are returned to Hewlett Packard No other warranty is expressed or implied We are not liable for consequential d...

Page 4: ...AND SERVICE MANUAL hp Part No 00209 90002 MODEL SINE SQUARE 209A OSCILLATOR Serials Prefixed 818 Copyright Hewlett Packard Company 1968 P O Box 301 Loveland Colorado 80537 U S A www HPARCHIVE com Printed MAY 1970 ...

Page 5: ...justment 5 7 5 34 Factory Selected Components 5 7 5 36 Troubleshooting Procedures 5 8 5 37 Front Panel Procedure 5 8 5 40 Detailed Circuit Troubleshooting 5 8 Section Page V MAINTENANCE 5 1 5 1 Introduction 5 1 5 4 Performance Checks 5 1 5 6 Dial Accuracy Check 5 1 5 7 Flatness Check 5 1 Section Page I GENERAL INFORMATION 1 1 1 1 Introduction 1 1 1 3 Specifications 1 1 1 5 Description 1 1 1 10 Ins...

Page 6: ...ts 6 2 LIST OF ILLUSTRATIONS Number Page 1 1 Model 209A Sine Square Oscillator 1 1 2 1 Dimensions 2 2 3 1 Description of Controls and Connectors 3 0 4 1 Model209A Block Diagram 4 0 4 2 RC Frequency Network Characteristics 4 1 5 1 Dial Accuracy Check 5 1 5 2 Flatness Check 5 2 5 3 2 MHz Distortion Check 5 3 5 4 Balance Check 5 4 5 5 Sync Input Check 5 5 6 1 Front Panel Exploded View 6 4 7 1 Oscilla...

Page 7: ...output amplitude working into 1 megohm shunted by 100 pF is greater than 1 7 V rms from 4 Hz to 50 kHz greater than 1 V from 50 kHz to 2 MHz Sync Input Oscillator can be synchronized to external signal For 5 V rms input sync frequency can be as much as 7 away from set frequency sync range Sync range is a linear function of sync voltage Hum and Noise less than 0 01 of output OUTPUT CHARACTERISTICS ...

Page 8: ...ter than 40 dB at frequencies below 20 kHz with the chassis isolated 1 8 The Model 209A can be synchronized with an external source With a 5 volt rms sync input the external source may vary as much as 7 in frequency and the Model 209A will remain synchronized 1 9 A sync output of 1 7 volts rms is also available at the same front panel terminal used to accept an external sync source 1 10 INSTRUMENT...

Page 9: ...ble which when plugged into an appropriate receptacle grounds the instrument The offset pin on the power cable three prong connector is the ground connection 2 9 To preserve the protection feature when operating the instrument from a two contact outlet use a three prong to two prong adapter and connect the green pigtail on the adapter to earth ground 2 10 INSTALLATION 2 11 The Model 209A is fully ...

Page 10: ...e can be purchased from your nearest hp Sales and Service Office b Ensure that the container is well sealed with strong tape or metal bands 2 21 If the original container is not to be used proceed as follows a Wrap the instrument in heavy paper or plastic before placing it in an inner container b Place packing material around all sides of the instrument and protect the panel face with cardboard st...

Page 11: ...open circuit 5 volts rms into 600 ohms CD Sine Wave Output Terminal 600 ohm sine wave output at a frequency and amplitude determined by control settings CD Square Wave Output Terminal 600 ohm square wave output at a frequency and amplitude determined by control settings CD SYNC Terminal 1 Input terminal for an external sync signal 2 Output terminal for 1 7 volt rms sine wave sync signal CD Ground ...

Page 12: ...uare wave output is being used simultaneously with the black terminal connected to ground the sine wave output will no longer be balanced 3 10 SYNCHRONIZATION 3 11 The Model 209A is equipped with a SYNC terminal that provides a sync output signal or accepts a synchronizing input signal from an external source The sync output signal is a 1 7 volt rms sine wave in phase with the oscillator output Th...

Page 13: ... 6 BRIDGE CIA PEAK COMPARATOR AMPLI FI ER R28 R24 AGC RI6 R8 I I I I I I FREQUENCY r I DIAL U I I I I i CIB 1 v iJ u o I m o 3 209A B 1614A 7 2V REF Figure 4 1 Model 209A Block Diagram 8 ...

Page 14: ...ncies nor is the amplifier gain constant for all operating frequencies One technique used for maintaining unity gain in the oscillator circuit at all operating frequencies is to have a dynamic resistance variable with changes in gain in the negative feedback network In the Model 209A this is accomplished with the combination of the peak comparator and AGC circuits 4 12 When the oscillator is first...

Page 15: ... circuit using AIQ9 AIQ9 conducts during the most negative portion of each negative half cycle developing a negative charge in AlC15 and its parallel capacitors As the amplifier output amplitude increases Al Q9 conducts more and AlC15 becomes more negatively charged This makes the FET input voltage more negative increasing its impedance and increasing the negative feedback to reduce the output amp...

Page 16: ...curacy 0 2 hp Model H08 11 049A Converter Frequency Range 5 Hz to 2 MHz Voltage Input 5 V rms Input Impedance 600 ohms Bucking See Figure 5 2 for diagram Supply a R fxd 6500 ohms hp Part No 0811 0392 b R var 500 ohms hp Part No 2100 0324 c R var 50 ohms hp Part No 2100 1481 d Battery 1 34 V Mallory RM 42R 2 MHz Notch See Figure 5 3 for diagram Filter a C fxd 30 pF hp Part No 0160 0181 b C fxd 400 ...

Page 17: ...HECK a Connect the Model 209A and the Frequency Counter as shown in Figure 5 1 Set the counter to measure frequency and check the Model 209A at the frequencies listed in Table 5 2 for the tolerances indicated b If the above dial accuracy checks fail to meet the required specifications refer to the Adjustment and Calibration Procedure in this section RANGE FREQUENCY COUNTER SWITCH DIAL INDICATION X...

Page 18: ... dB XIK 10 60 dB X10K 2 60 dB XI0K 10 60 dB XIOOK 2 60 dB XI00K 6 50 dB XI00K 20 40 dB Output Voltage and Impedance Sine Wave No load 10 Vrms 600 ohm load 5 Vrms Output Control Sine Wave 1 V rrns Balance Sine Wave 40 dB Output Voltage Square Wave 20 V pk pk Rise and Fall Time Square Wave 50 nsec Symmetry Square Wave 0 5 cm Sync Output 1 7 V rms Sync Input 18 6 kHz 21 4 kHz www HPARCHIVE com ...

Page 19: ...Check the Model 209A flatness at the frequencies listed in Table 5 3 recording the DC NULL VOLTMETER indication for each frequency Example Frequency THERMAL CONVERTER output DC NULL VOLTMETER reading Calibration Report multiplier Table 5 3 tolerance 025 mV x 100 0 29 5 mV x 1 7 100 kHz 5mV 25 uV 1 7 0 5 5 2 NOTE The THERMAL CONVERTER is considered a square law device Therefore theoretically the pe...

Page 20: ...istortion Analyzer FUNCTION to DISTORTION and adjust the Distortion Analyzer dial and BALANCE controls for a null indication on the meter f When an approximate null has been obtained with the Distortion Analyzer dial and BALANCE controls switch the MODE to AUTOMATIC for minimum meter indication g Meter indication should be greater than 60 dB down from the 0 dB reference j Set the Model 209A freque...

Page 21: ...than I volt rms hp209A OSCILLATOR Model209A 5 11 BALANCE CHECK SINE WAVE a Connect the Model 209A sine wave output with a 600 ohm load to the AC Voltmeter b Set controls as follows Mode1209A Dial 2 RANGE XIOK AC Voltmeter RANGE ODB c Adjust the Model 209A sine wave amplitude for a meter indication of 0 dB d Remove the 600 ohm load and connect the equipment as shown in Figure 54 e Meter indication ...

Page 22: ...e output to the Electronic Counter and adjust controls for a frequency of 20 kHz c Without changing the controls set in steps a and b connect the equipment as shown in Figure 5 5 b While observing the waveform on the oscilloscope adjust the Model 209A frequency dial for exactly 1 cycle for 10 centimeters c The waveform crossover point should be within 0 5 em of the center of the oscilloscope grati...

Page 23: ...rmance Checks that the Model 209A is not performing within its specifications 5 25 If proper performance cannot be achieved with the Adjustment and Calibration Procedure refer to the Troubleshooting Procedures 5 Model209A 5 26 POWER SUPPLY 5 27 Before making any adjustments check the power supply voltages at test points 2 and 3 These test points may be reached through the shield cut out labeled B ...

Page 24: ...TY for odB meter indication e Set the Distortion Analyzer Dial and Balance controls for minimum indication Section V f Set the Distortion Analyzer MODE to AUTOMATIC and adjust R30 DIST for a meter indication of greater than 60 dB down from 0 dB reference 5 33 SYMMETRY ADJUSTMENT a Connect the Model 209A square wave output to the oscilloscope b Set the Model 209A frequency to 200 kHz and the oscill...

Page 25: ... When making these measurements be sure to connect the jumper between the chassis section where the tuning capacitor is mounted and the tab just below it 542 The Oscillator Amplifier may be disabled by turning AGC ADJUST R24 fully counter clockwise A one volt rms sine wave from an external source may now be injected into the gate of Al Ql The various stages of the amplifier may now be monitored wi...

Page 26: ... 6 Hz XI00 2 200 Hz 6 Hz X100 5 500 Hz 15 Hz X100 20 2kHz 60 Hz XIK 2 2kHz 60 Hz XIK 5 5 kHz 150 Hz XIK 20 20kHz 600 Hz XIOK 2 20kHz 600 Hz X10K 5 50kHz 1 5 kHz XIOK 20 200 kHz 6 kHz X100K 2 200 kHz 6 kHz X100K 5 500 kHz 15 kHz XlOOK 20 2 MHz 60 kHz Flatness Tolerance Range Dial NORM LOWDIST X2 2 5 5 1 1 X2 10 5 1 1 XIO 2 5 5 1 1 XIO 10 0 5 X100 2 5 0 5 XIOO 10 SET XIK 2 5 0 5 XIK 10 0 5 XIOK 2 5 ...

Page 27: ... nanosecond s 10 9 51 slide Al aluminum impg impregnated seconds SPOT single pole double A ampere 5 ioed incandescent not separately replace throw Au gold ins insulation ed able SPST single pole single C capacitor kilohm s 10 3 ohms throw cer ceramic kO 0 ohm 5 Ta tantalum cuel coefficient kHz kilohertz 10 3 hertz obd order by description TC temperature coefficient com common OD outside diameter T...

Page 28: ...pF 2 ns 07263 FDG 1088 CR6 1902 0041 Diode breakdown zener 5 1 V 5 04713 S210939 98 CR7 CR8 1901 0040 Diode Si 30 wiv 30 rnA 2 pF 2 ns 07263 FDG 1088 CR9 1901 0347 1 Diode Si hot carrier 8V 20 rnA at 1 15 PF 120 ps hp CRlO 1902 0057 1 Diode zener 6 49 V 5 04713 S710939 128 CRll 1901 0040 Diode Si 30 wiv 30 mA 2 pF 2 ns 17263 FDG 1088 CR12 1912 0009 1 Diode tunnel 01002 CR13 1901 0040 Diode Si 30 w...

Page 29: ...FF 1 8 T l R45 2100 2550 1 R var comp lin trim 20 kilohms 30 71450 XPE200RE R46 0757 11453 R lxd met tim 30_1 kilohms l 1 8W 75042 CEA T O obd R47 0684 4721 1 R Ixd comp 4700 ohms 10 1 4 W 01121 CB 472 R48 0698 3519 1 R Ixd met tim 12 4 kilohms 1 1 8 W 19701 MF5C T O obd R49 0757 11441 1 R Ixd met 11m 8250 ohms 1 1 8 W 75042 CEA T O obd R50 0757 11278 1 R fxd met 11m 1780 ohms 1 1 8 W 75042 CEA T ...

Page 30: ...CI 26 Figure 6 1 Front Panel Exploded View 6 0 t I 0 o I m o 3 ...

Page 31: ...95 1 R fxd comp 3 9 ohms 1 5 1 4 W 01121 C8 39G5 R15 0684 4711 1 R fxd comp 470 ohms 1 1 0 1 4 W 01121 C84711 R16 R17 0684 2231 1 R fxd comp 22 kilohms 1 1 0 1 4 W 01121 CB 2231 R18 0684 4711 R fxd comp 470 ohms 1 10 1 4 W 01121 C84711 R19 0683 395 R fxd comp 3 9 ohms 1 5 1 4 W 01121 CB 39G5 T1 9100 1435 1 Transformer hp CHASSIS MOUNTEO COMPONENTS C1 0121 418 1 C var air 2sections hp C2 0160 378 C...

Page 32: ... black hp MP37 5000 7148 4 Insert Insulator my hp MP38 0370 0844 2 Assembly amplitude knob hp MP39 0370 0845 1 Assembly range knob hp MP40 0370 0846 1 Assembly vernier knob hp MP41 00209 64001 1 Assembly frequency dial hp MISCELLANEOUS 5060 5918 1 Assembly top cover hp 1510 0056 2 Binding Post Assembly black rear panel hp 5000 5838 2 Bracket top cover hp 00209 69502 1 Chassis shield hp 00204 7601 ...

Page 33: ...able parts list DESIGNATIONS PARTIAL REFERENCE DESIGNATIONS ARE SHOWN PREFIX WITH ASSEMBLY OR SUBASSEMBLY DESIGNATION S OR BOTH FOR COMPLETE DESIGNATION ASSEMBLY A2 A2 NONE SUBASSEMBLY NONE A1 NONE COMPONENT Q1 R1 J1 COMPLETE DESIGNATION A2Q1 A2A1 R1 J1 STO A IIOOA AJJembly Reference AJJembly AJJembly Part Number Designation Name i cludes A2AI subassembly IIInot mounted on AJJembly A2 IA2 w IOH Co...

Page 34: ... POWER LINE GROUND 4 rh DENOTES CHASSIS GROUND 5 DENOTES ASSEMBLY 6 DENOTES MAIN SIGNAL PATH 7 DENOTES FEEDBACK PATH 8 1 1DENOTES FRONT PANEL MARKING 9 C JDENOTES REAR PANEL MARKING 10 DENOTES SCREWDRIVER ADJUST 11 0 _DENOTES FRONT PANEL CONTROL DENOTES COMPONENTS NOT MOUNTED ON ASSEMBLY 7 2 13 OPTIMUM VALUE SELECTED AT FACTORY 14 t DENOTES FACTORY USE ONLY 15 DC VOLTAGES WERE MEASURED WITH THE AG...

Page 35: ...J 5 ra ri 1 _ gN g a 10 I 1111I111 1IIIYI llililIYi Y I r I L __J I oh H l U J6HHH1H II RI2 I R59 I u 55 uu i 55 5 t u RII eJ R4 I I I I I I I I I I I I I I I I I I I I I I I I I RIO ii R3 II r 8LU I I R2 I e 8 II I U H H H o l I I I II uuuo o o o 0 I 1II I11 I 111111111 3 I I I R22 RI I I R30 r R24 R20j I f I R82 j _ _J a EJa 209 8 1 73 _ J I iii I 2 3 4 BIAS TEST 5 AGC TEST 6 GRD 7 21V 8 21V 9 1...

Page 36: ...H AGC ADJUST R24 FULLY CCW OSCILLATOR DISABLED AND FREQUENCY RANGE SET TO XIOK 1 TO OPERATE THE INSTRUMENT WITH THE CHASSIS SHIELD OFF A SHORT JUMPER MUST BE CONNECTED BETWEEN THE CHASSIS SECTION ON VHICH THE TUNING CAPACITOR IS MOUNTED AND THE SHEET METAL TAB JUST BELOW IT 3 SWITCH SI IS SHOWN IN X2 POSITION IN THE TABLE BELOW DOTS DENOTE CAPACITORS IN USE A 11 o 12 o o I o 2 1 REAR 209A E 1604A ...

Page 37: ...K XIO XIOK X2 XIOOK 0 CD OFF GRN r CIB JI C8 L___ 5 5 18 PF 1 AGC a FREQ CAL o CD R17 14 5M SIA RI6 47 5M R9 14 5M CDo SIB F R8 47 5M C6 2PF RI4 12M R7 470K R6 12M R15 470K C30 1 5pF R5 1 24M RI3 1 24M RI2 124K CI J OI RII 12 4K R2 R3 R4 1240 12 4K 124K RIO 1240 AGC e FREQ CAL C4 C3 6 8PF 9 35 PF SIA 0 0 CD 0 R R 21V HIGH RI FREQ 470 CAL C5 9 35 PF 6l4A EMBLY O I I I CDo 0 SIC 8 p c o 21V I TP2 B ...

Page 38: ...76 C29 2940 300 ell R77 R78 5600 604 R80 604 21V R798 ell 018 21V 21V 21V R37 lOOK 21V SYM AOJ rr 21V CR9 R35 18K R70 10K 21V 9 4V CII I I 2 CR II 39 21V 21V 7 1 J6 ISYNC I R34 680 GATIVE E08ACK 2N I I I 1V tSICIF D ACTORY USE ONLY www HPARCHIVE com Figure 7 1 Oscillator Schematic AI 7 3 7 4 ...

Page 39: ...RI CR2 RI CR3 CR4 JJ t CI D CR6 e I e CR5 R9 R2 I R3 R4 e RIO RII RI4 e RI5 R16 m 1 C2 53 e e R8 R7 CR7 0 R6 e R5 RI2 RI3 8 R 7 RI9 RI8 0 0 C2 I C3 10 XAI A2 hp Part No 00209 66512 REV A www HPARCHIVE com ...

Page 40: ...150 604 RIO I 11 5K I I Q3 R3 u 3300 RII r I TI 10K m CR5 R4 10V 3300 a 3 em JI S3 CR7 R5 15 10V 3300 RI J 22 R6 3300 Q5 CR4 C2 R7 2 I 150T 604 I 4 r x h R8 l hlL _ J 180 SHORTING I STR I 1 t I L I J Q7 L __ 209A C 1605A COPYRIGHT 1968 BY HEWLETT PACKARD COMPANY ...

Page 41: ...rp Westbury N Y Stewart Engineering Co Santa Cruz Calif Wakefield Engineering Inc Wakefield Mass Bassick Co Diy of Stewart Warner Corp Bridgeport Conn Raychem Corp Redwood City Calif Bausch and lomb Optical Co Rochester N Y E T A Products Co of America Chicago III Amatom Electronic Hardware Co Inc New Rochelle N Y Beede Electrical Instrument Co Inc Penacook N H Indianapolis Ind Phoenix Ariz Varian...

Page 42: ...nal Resistance Co Philadelphia Pa 82170 Fairchild Camera Inst Corp Space Defense 60741 Triplett Electrical Inst Co Blufflon Ohio 15263 Keystone Carbon Co Inc St Marys Pa System Div Paramus N J 61775 Union Switch and Sianal Div of 75378 CTS Knilhts Inc Sandwich Ill 82209 Maguire l tdustries Inc Greenwich Conn Westinahouse Air Brake Co Pittsburah Pa 75382 Kulka Electric Corporation Mt Vernon N Y 822...

Page 43: ...mer Ind Plastics 95263 Leecraft Mre Co Inc L nalslond N Y 99928 Branson Corp Whippony N J Prod Div Passaic N J 95265 National Coil Co Sheridan Wyo 99934 Renbrandt Inc Boston Mass 90970 Bearing Engineering Co San Francisco Calif 95275 Vitramon Inc Bridgeport Conn 99942 Hoffman Electronics Corp 91146 ITT Cannon Elecl Inc Salem Div Salem Mass 95348 Gordos Corp BI mfield H J Semiconductor Div EI Mo t ...

Page 44: ...all Suite 158 4475 S W Scholls Ferry Road Portland 97225 Tel 503 292 9171 TWX 910 464 6103 PENNSYLVANIA 2500 Moss Side Boulevard Monroeville 15146 Tel 412 271 0724 TWX 710 797 3650 1021 8th Avenue King of Prussia Industrial Park King of Prussia 19406 Tel 215 265 7000 TWX 510 660 2670 RHODE ISLAND 873 Waterman Ave East Providence 02914 Tel 401 434 5535 TWX 710 381 7573 TEXAS P O Box 1270 201 E Arap...

Page 45: ...r 42 1 Tel 6282 15628 Blue Star ltd Telex 232 2024YHP Tel 511027 512927 Nairobi Box 6487 Cable HE I NAMI Cable YHPMARKET TOK 23 724 Cable COOPERATOR Karachi Tel 25610 26803 68206 58190 Luanda 23124 Second line Beach Cable ARJAYTEE Nairobi Cable TElECTRA luanda ETHIOPIA Madras 1 India KENYA PHILIPPINES African Salespower Agency Tel 239 55 R J Tilbury ltd Electromex Inc THAILAND AUSTRALIA Private lt...

Page 46: ...J 00209 90002 HEWLETT PACKARD www HPARCHIVE com PRINTED IN U S A ...

Page 47: ...e Al C30 CHANGE NO 2 818 00950 and below Table 6 1 Change AICR6 to Diode silicon hp Part No 1902 0041 Change Al R43 to R fxd 18 kilohms hp Part No 0684 1831 Figure 7 1 Show Al CR6 as a conventional diode Change the value of Al R43 to 18 kilohms NOTE 818 01776 and below Replacement of Al CR12 Tunnel diode hp Part No 1912 0009 is the replacement part for hp Part No 1912 0026 The ANODE and CATHODE co...

Page 48: ...nge Part No of A2 Power Supply Assembly to 00209 66502 Change Part No of J1 Connector to 1251 0148 Page 6 6 Table 6 1 Miscellaneous Change Part No of power cord set to 8120 0078 Figure 7 2 Change component location diagram as shown below www HPARCHIVE com ...

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HP 209A, Operating And Service Manual

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