Tektronix 191 Instruction Manual
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Tektronix 191 Instruction Manual

Tektronix 191 Instruction Manual

Constant amplitude signal generator
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INSTRUCTION
MANUAL
J9J
TYPE
CONSTANT
AMPLITUDE
SIGNAL
GENERATOR
Tektronix, Inc.
S.W. Millikan Way •
•
•
• Cables: Tektronix
500
97005
644-0161
P. O.
Box
B eaverto n, Oregon
Phone
16 6
070-0522-00

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  • Page 1 INSTRUCTION MANUAL TYPE CONSTANT AMPLITUDE SIGNAL GENERATOR Tektronix, Inc. S.W. Millikan Way • • • • Cables: Tektronix 97005 644-0161 P. O. B eaverto n, Oregon Phone 16 6 070-0522-00...

  • Page 2: Warranty

    WARRANTY All Tektronix instruments are warronted against defective materials and workman­ ship for one year. Tektronix transformers, manufactured in our own plant, are war­ ranted for the life of the instrument. Any questions with respect to th war· ranty mentioned above should be token up with your T ktronix Fi Id Engineer.
  • Page 3 CONTE Characteristics Section Operating Instructions Section Section Circuitt Description Section Mainlenance Section Performance Check Section Calibration Paris Ordering Information Abbreviations and Symbols Section Electrical Ports list Mechanical Parts List Information Section Mechanical Parts List Section Diaglroms Mechanical Parts List Illustrations Accessories Abbreviations and symbols used in this manual are based...
  • Page 4 TYPE 191 AMPLITUD RATOR laNAL TEKTRONIX fig, 1-1. Type 191 Constant Amplitvck Signal Generalor, Type ®...
  • Page 5 0° C to +50° C. Warm-up time for the found on the last pul lout page at the rear of this manual. given accuracies is 5 minutes at 25° C - +-5° C. For optional accessories, see the Tektronix, Inc. catalog. TYPE 1 91 OUTPUT...

  • Page 6: Section 2 Operating Instructions

    SECTION 2 OPERATING INSTRUCTIONS General To eHec ively use Ihe Type 191 AmpHude Signal Line Voltage Generator, the operation and capabilities of he instrument Swllch SW10S must be known. This section describes the opera ion fronl- and reor-ponel conttols connectors, and gives time operating information.
  • Page 7 (SWI05) Ihon SW105 will select those l ine 7. Connect t Type 191 to power source t voltagos t he voltago and frequency requirom nts of inslrumont uppl i ed 5 ns 3. Connect one end of the...

  • Page 8: Application Notes

    Mode Triggered A smaller diameter, more flexible output coaxial cable Slope (such as RG-5SA/U) ca n be used with the Type 191, but some Coupling am plitude loss will occur at hig her frequencies. For example, Normal operating into a 50 ohm load at 100 MHz, a 5 nanosecond...
  • Page 9 5012 5012 � 2512 .."2-7T. ..,R, ,. .,C� where fo 191, Fig. 2-4. Equivalent circuit of a Type a 50 ohm cable, and a 50 ohm termination. In the figure V represents the generator output amplitude selected with the front-panel controls.

  • Page 10: Block Diagram

    SECTION 3 CIRCUIT DESCRIPTION Introduction Series Regulator This section of the manual contains an electrical des­ The correction voltage from the Feedback DC Am plifier cription of each circuit in the Type 1 91 . A block diagram varies the grid pote ntial of V94, which causes the Series Regulator tube to adjust the a mount of plate voltage avail­...
  • Page 11 1 91 Circuit Description-Type resistor i n each of the output networks except for the 42 to actual peak-to-peak voltage (Osci llator output amplitude) 1 00 MHz range reduces the Q of the resonant circuit which is at the sampling point. The output of the detector under formed by the components of the output network.

  • Page 12: Series Regulator

    Circuit Description-Type base of Q84 is determ i ned by the combined junction volt­ connected at the factory, permits the instrument to be easi ly ages of D80 and D81 and by the current through R80 and converted from 1 1 5 volts to 230 volts by connecting the two R81 .

  • Page 13: Preventive Maintenance

    (such as Tektronix Part No. 006- tenance or troubleshooti ng of the Type 1 91 . 0220-00). Do not over lubricate. A l ubrication kit contain­...

  • Page 14: Soldering Techniques

    Tektronix Field Office or representative. chassis. Additional silver solder should be available local­ ly or it ca n be purchased directly from Tektronix; order Ordering Parts. When ordering replacement parts from by Tektronix Part No. 251 -051 4-00.

  • Page 15: Troubleshooting

    Maintenance-- T ype U nsolder the g round wire which connects T1 4 to the ment. To remove the cover, loosen the slotted thumb screw board. a nd slide the cover off of the instrument. 3. Remove all screws holding the board to the chassis. A complete Ceramic Terminal Strip Replacement.

  • Page 16: Troubleshooting Aids

    Maintenance-- T ype 1 9 1 1 91 is color-coded with two or less stri pes or has a solid Troubleshooting Aids background with no stripes. The color-coding helps to Diagrams. Circuit diagrams are given on foldout pages trace a wire from one point in the instrument to another. in Section 9.
  • Page 17 -1 1 volt If substitute transistors or tubes are not avai lable, a dynamic + 6.2 volt -+-0.4 V tester may be used (such as Tektronix Type 570 or 575). +450 volt U nregulated Static-type testers a re not recommended, however, since they do not check operation under simu lated operating conditions.
  • Page 18 Maintenance-- T ype 1 9 1 FIlii . 4·3. Pea. pea. deleclor board l.lng.

  • Page 19: Performance Check

    1 1 . Two cables. Impedance 50 ohm; type RG-58A/U; adj ustments. See the Calibration section of the I nstruction length, 42 i nches, connectors BNC. Tektronix Part No. 01 2- Manual. 0057-00. 1 2. Earphone. I m pedance 600 ohm or higher.
  • Page 20 Performance Check-Type 1 91 c. Set the test osci l l oscope controls as fol lows: y. Set the Volts/Div control of the test osci lloscope to 1 . Vertical I nput Coupling Ad j ust the vertical gain of the test oscil loscope to to obtain exactly five divisions of vertical display.
  • Page 21 Performance Check-Type 1 91 b. Connect the OUTPUT connector on the Type 1 91 b. Connect a 5 volt square·wave signal from the standard through a 5 ns length of RG-8A/U coaxial cable and a GR amplitude calibrator through a 50 ohm coaxial cable to the to BNC 50 ohm termination to the Channel 1 vertical i nput vertical input of the test oscilloscope.
  • Page 22 Performance Check-Type 1 91 j. Disconnect Type 1 9 1 , Time-Mark Generator a nd the TABLE 5-2 earphones from the test oscil loscope. Output Amp l itude IMaximum Freq uency R a n g e Amp l itude Limits ( Pea k to Pea k ) V ariation - +-3 %...

  • Page 23: General Information

    1 0. 1 00 X sampling probe. Tektronix P6035 or equiva­ lent. ( se e Figs. 6-1 a n d 6-2 ) 1 1 . 1 X probe. Tektronix P6028 or eq uiva lent. General 1 2. Cable. 5 ns RG-8A / U cable with GR connectors.
  • Page 25 Calibratio n-Type 1 9 1 1 1 41 ( 1 51 1 I 31 .L&\:.l\. ® ( 1 61 Fig. I1:eco",,,, e ndR equipment. 1 11m. 1 2 th,o "h 1 6 (ollb,ollon shOt Ado pl Conn clor�, BNC plvg to GR. l A.
  • Page 26 Calibration-Type 1 9 1 7. Adjust Amplitude Calibration. Page 6-1 2. TABLE 6-2 Adjust for exactly 1 volt of unterminated sine wave output. Time-Mark 1 9 1 Type Generator 8. Check Amplitude Variable Control. Page 6-1 2. FREQUENCY Frequency Time Markers Full clockwise rotation should increase AMPLI­...

  • Page 27: Preliminary Procedure

    Calibration-Type 1 91 2. Rotate the Frequency (dial) clockwise until the plates General of capacitor C1 0 j ust become fully meshed. Check that the In the following calibration proced ure, a test equipment Frequency (dial) now indicates a frequency of 42 MHz (on setup is shown for each major setup change.
  • Page 28 Ca libration-Type 1 9 1 Autotranlf o r m . r T ..'.'\lP " P I Ftg. 6.3 , .qutp 1 through 3. rol. Rl n 1 1 YOLTS !sec Fig, 6·41 unl i l Con tro l Setti n g s rcoding 1$ tho DC o btaIned on...

  • Page 30: Control Settings

    Ca li b ra tion-Type 1 9 1 t flllo u.t UIII(� Au'ol,an.formOr IItot Tim. P,ob. Ttl! a (1ilo Hopl •• " . p FI". �ulp ,".n' 1o , 6·6. T.tt Chock ror about mV of rippl Control Settings Ihe a utot r a nsfo r m e e.
  • Page 31 Calibration-- T ype 1 9 1 ... ou­ • .- "" Standard Amplitude Calibrator OR 10 B N C Cable Adap.e, •• tup l o r .t.p $. Fl •• It-7. Te,' .qulpment Aulomalic Trigger Control ttings Trr g gcr Slope POWER Trlggor Source I n terna l...
  • Page 32 Calibration-Type 1 9 1 R oJ Tim. r .., O.clllolCope n. Cobl. PIg. 6·8 . Typ. 1 9 1 connecllon to reol time 'e.1 oacil ioicope. 6- 1 0 ®...
  • Page 33 1 91 Calibration-Type flSl 6.9. Telt eq uipment .etup Itep Control S ttings POWER AMPLITUD RANGE 5·5 V AMPLITUDE VARIABLE (Ampli 'ude) 50 k H z ONLY FR QUENCY RA NGE Frequency (dial) .5 mar sca le for correc line vol.· 1 1 5 V /'230 V (rcar...
  • Page 34 Calibration-Type 1 9 1 "f" , ... _ Standard Amplltud. Calib,alor •• , hal Tim. OICIIIDICDp. 10 e N C Adapl., Fig. 6. 1 1 . .. , .qulpm.n. "'IIp fo, ".PI 7 and d. Adjust tho vertical gain of tho tClst OSCilloscope to Control S ttings oblol n xactly five divisions of vertical d...
  • Page 35 1 9 1 Ca libration-Type e. Disconnect slandard amplitude calibralor from Ihe tesl oscilloscope. Connecl OUTPUT connector on the Type 1 9 1 through a 5 n s lenglh o f RG·8A / U coa xial cable, and a GR to BNC 50 ohm terminalion vertical i nput con·...
  • Page 36 1 9 1 Ca libratioo-- T vpe Rlol ""'. lIIolcop, C obl 1 1. 1 0 6. 1 3. ryPf 1 9 1 connullon 10 rlol F i ll . tim. cil ioicope. 6 - 1 4...
  • Page 37 1 9 1 Ca libration-Type "cd TI",. rei' OHIIIDICDp. Fig. 6· 1 4. " 10' ,t.p. 'qulp",.nt' letup 1 1 . I osci l l o· . II cessory to set only tho following Control S ttings scope can rol$ POW E R Channels l a d 2 50 500 mV...
  • Page 38 Calibration-Type 1 91 TABLE 6-1 Type 1 9 1 Time-Mark Generator 1 9 1 Freq uency Ti m e Markers Type RANGE Switch Frequency ( d ial ) Sine Waves Ad iustment 50 MHz 42- 1 00 20 ns 1 00 MHz 42-1 00 20 ns 20 MHz...
  • Page 39 Calibration-Type 1 9 1 Sarnpling Test OlCllloHope T e r m l n allon Fill. 6.1 S. re,t equlprnent .etup Itep Vertical Plug Control S ttings Iivolts/ 1 00 O W ER Vorhcal Poslhon .5·5 AMPLITUDE RANGE OHsot Display Normal AMPLITU DE Refer Smooth i ng...
  • Page 40 Callb ration-Type 1 9 1 1 91 output ampl itude does nol vary more Ihan Ihe amou shown in Table and that the waveform has minimum di slortion. AMPL ITUDE RANGE swilch 10 50- k . Change Ihe Type 1 91 10 50 k H z 500 mV and Iho F R EQ U ENCY...

  • Page 41: Abbreviations And Symbols

    ABBREVIATIONS AND SYMBOLS A or a m p a m peres ind uctance A C o r a c alternating current lambda-wavelength audio frequency large compared with < al pha--camman-base current a m p l ification factor less than amplitude modulation low frequency approximately equal to length or long...

  • Page 42: Parts Ordering Information

    If a part you have ordered has been replaced with a new or i m proved part, yo u r local Tektronix, I n c . Field Office o r representative w i l l contact you concerning a n y change i n part n u m ber.
  • Page 43 Type 1 91 SECTION 7 EI.ECTRICAI. PARTS I.IST Val ues are fixed unless marked Variable. Tektro n ix Description Ckt. No. Part No. SIN Range Bulb 81 09 I ncandescent, 1 0 V, 40 m A Pilot light 1 50-0052-00 Capacitors Tolerance +20% unless otherwise i ndicated.
  • Page 44 Electrical Parts List-Type 1 91 (Conrd) Capacitors Tektronix Ckt. No. Part No. Descri ption SIN Range C1 09 283-0051 -00 0.0033 p.F l OO V C1 1 3 290-0278-00 550 p.F 50 V C1 1 5 290-0278-00 5SO p. F...
  • Page 45 Electrical Parts List-Type 1 91 Inductors (Cont'd) Tektronix Description Ckt. Part No. SIN Range 2.5 p.H *1 08-01 03-00 1 .2 p.H *1 08-0056-00 0.6 p.H * 1 08-0262 -00 * 1 08-0260-00 0.1 p.H *1 08-0262-00 0.6 p.H 276-0525-00...
  • Page 46 Electrical Parts list-Type 1 9 1 Resistors (Conf'd) Tektronix Part Ckt. No. Description Range 1 / 2 % 3 1 8·0092-00 40.9 0 1fs W Prec l/ e W 31 8-0092-00 40.9 0 Prec R45A 31 8-0093-00 20.2 0 1fs W...
  • Page 47 Electrical Parts List-Type 1 91 Resistors (Cont'd) e k troni SIN Ra nge Part No. Description 306-01 02-00 l kO 306-01 02-00 1 kO 302-01 51 -00 1 50 0 1/2 W Rl 09 1 / 4 W 31 6-01 00-00 R1 l 1 R1 1 2 31 6-01 00-00...
  • Page 48 If a part you have ordered has been replaced with a new or improved part, your l oca l Tektronix, I nc. Field Office or representative w i l l contact you concerning a ny cha nge n part n u m ber.
  • Page 49 Mechanical Parts List-Type 1 9 1 I NDEX OF MECHAN I CAL PARTS LIST I L LUSTRATIONS F I G. FRONT CHASSIS F I G. FIG. 3 CABI NET FIG. ACCESSORIES ® TYPE 1 9 1 CONSTANT AMPLITUDE SIGNAL GENE RATOR...
  • Page 50 Type 1 91 SECTION 8 MECHANICAl. PARTS I.IST FIG. 1 FRONT AND REAR Fig. & I n dex Tektronix Seria l/Model No. Description Disc Part No. PANEL, front 1 -1 333-0927-00 PLATE, sub-panel 386-1 01 9-00 KNOB, charcoal-Frequency Dial 366-01 1 7-01...
  • Page 51 Mechanical Parts List-Type 1 91 (Cont) FIG. 1 FRONT AND REAR Fig. & I n dex Tektronix Serial/Model Description Part No. Disc 1 -1 8 SWITCH, toggle-POWER 260-001 4-00 mounting hardware: (not incl uded with switch) 1 5/32-32 NUT, hex.,...
  • Page 52 Mechanical Parts Ust-Type 1 91 (Cont) FIG. 1 FRONT AND REAR Fig . & I ndex Tektronix Seri a l/Model No. Description Disc Part No. KNOB, charcoal-AMPLITUDE RANGE 1 -37 366-0322-01 knob includes: SCREW, set, x 3/16 i nch, HSS...
  • Page 53 Mechanical Parts List-Type 1 91 (Cont) FIG. 1 FRONT AND REAR Fig. & Tektron ix I n d ex Serial! Model Description Pa rt No. Disc 1 -68 21 4-0680-00 PIN, locating mounting hardware: (not i ncl uded with pin) x 1 % 2 i nch 21 0-0458-00 NUT, keps,...
  • Page 54 Mechanical Parts List-Type 1 91 FIG. 2 CHASSIS Fig . & I n dex Tektronix Serial/Model Description Part No. Disc 441 -0663-00 CHASSIS, vertical mounting hardware: (not included with chassis) - - - 21 1 -0542-00 SCREW, 6-32 x 5/16 inch, THS 21 1 -0538-00 SCREW, 6-32 x %6 inch, 1 00 °...
  • Page 55 Mechanical Parts List-Type 1 9 1 (Cont) FIG. 2 CHASSIS Fig . & I n dex Tektronix Serial/Model Description Part No. Disc GROMMET, plastic, %2 inch diameter 2-23 348-0031 -00 GROMMET, plastic, % inch diameter 348-0056-00 GROMMET, plastic, 1 / 4 inch diameter...
  • Page 56 Mechanical Parts List-Type 1 91 (Cont) FIG. 2 CHASSIS Fig. & Index Tektronix Serial! Model No. ption Disc Part No. STRIP, ceramic, 7/16 inch h, w notches / 1 6 2-46 1 24-01 46-00 each strip incl udes: STUD, plastic...
  • Page 57 Mechanical Parts Ust-Type 1 91 FIG. CABINET Fig . & Tektronix I ndex Seria l/Model Description Part No. Disc CABINET 437-0078-00 cabinet includes: PLATE, side 386·01 41 -00 mounting hardware for each: (not incl uded w/plate alone) SCREW, x 1/ , inch,...
  • Page 58 Mechanical Parts Ust-Type 1 91 (Cont) FIG. CABINET Fig. & Tektronix Serial/Model No. Description Part No. Disc FOOT, rear, left 348-0074-00 3-1 6 mounting hardware: (not included w/foot a lone) - - - % inch, Fil HS SCREW, 6-32 21 1 -0532-00...
  • Page 59 U N R EG U L AT E D POW E. R :SU P P L Y VA R I A B L E. e,W 5 5 A M P L I T U D E. F E � D B AC K D C S E.

  • Page 60: Amp L I T U D E Range

    IMPORTANT VOLTAGE AND WAVEFORM CON DITIONS Circuit voltages measu red with a 20,000 S1 / volt VOM. All read­ i n g s in vo lts. Voltages a re m ea s u red with respect to c hassis g ro u n d u n less oth erwise n oted .
  • Page 61 +450V Ut-lRE.G CD - C 7 2. R7 2 BAS I N G . 0 0 1 R 94 FOR A L L R 9 6 V9 4 470K. T R A N S I S T O R + 6 . 2Y + 6.2V 7//9 E.XCE.PT...
  • Page 62 SW I O I T I O I R l !> 1 0 1 :'2 R l �2 R I40 4 . 7 K C I 3 2 A 3201/ R I 3 5 40.u F l eOK 4-0mA C I 3 Z B 40.uF S'W IOS - r - - ,- ----- --1...
  • Page 63 FIG. 1 FRONT TYPE 1 9 1 CONS TANT AMPLITU DE SIGNAL GENERATOR t / /...
  • Page 64 FIG. CHASSIS TYPE 1 9 1 CONSTANT AMPLITU DE SIGNAL GENERATOR...
  • Page 65 FIG. 3 CABINEJ TYPE 1 9 1 CONSTANT AMPLITUDE SIGNAL GENERATOR...
  • Page 66 FIG. 4 STANDARD ACCESSORIES � TY P E 1 9 1 CONSTANT AMP LITU D E SIGNAL GENERATOR & Fig. I n dex Serial/Model No. Tektronix Description Part No. Disc 1 00 1 349 1 61 -0024-00 CORD, power, 3-conductor, 8 feet 1 350 1 61 -0024·01...

  • Page 67: Manual C H Ange Information

    MANUAL C H ANGE INFORMATION At Te ktro n i x , we c o n t i n u a l l y strive to keep up with l a test e l ectro n i c deve l o p m e n ts by a d d i n g c i rc u i t a n d c o m p o n e n t i m prov e m e n ts t o o u r i n stru m e n ts a s soon...
  • Page 68 TYPE CORRECTION NOTICE � 41 . 2 40. 9 Due to a temporary shortage of resis tors , a resis tor , selected t o be within the tolerance range of the original resis tor , R 41 , R43 , R44 , R46 , R4? may have been subs tituted for in this ins trument .
  • Page 69 TYPE TENT SM 1660 LIST PARTS CORREC!IOI CHANGE TO : 10 V, 40 IIA B109 he .. de.cent , Ml2 ,0 3 1/667...
  • Page 70 TYPE TENT SN l580 PARTS LIST CORRECTION CHANGE TO : 151-0169-00 2N3 4 3 9 ADD : 2 -047 4-00 4 7 0 10 % SCHEMATIC CORRECTION + 4 50 V U t..l R E.G R 94 C 7 2. R7 2 V 9 4 + 6 .

  • Page 71: Parts List

    TENT SI 1,54 TYPE PARTS LIST CORRECTION CHANGE TO : (nominal installed value ) '15-0910-00 Rl15 422/567...

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