HP 1331A Operating And Service Manual Download Page 79

Page: 79 / 104

Summary of Contents for 1331A

Page 1: ...U PERATI l IG AND S E RVIC E MANUAL 1 ffi l 1 w f J i i I 7 ODEL 1331A c L i _ _ Y DISPLAY ...

Page 2: ...erials 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 provided they are returned to Hewlett Packard No other warranty is expressed or implied We are not liable for consequential dam...

Page 3: ...instruments with other Serial Prefixes Referto SectionVII for instruments with the following standardoptions X95 631 HEWLETT PACKARD COMPANY COLORADO SPRINGS DIVISION 1900 GARDEN OF THE GODS ROAD COLORADO SPRINGS C OLORADO U S A ManualPartNumber01331 90903 MicrofichePartNumber01331 90803 PRINTED MAY 1973 ...

Page 4: ...3 2 4 1 4 1 4 1 4 1 4 1 4 1 4 2 4 2 4 2 4 2 4 2 4 2 Section Page v 4 29 4 31 4 33 4 35 4 37 4 54 4 56 4 64 4 71 4 76 4 78 4 82 X and Y axis Amplifiers 4 2 Z axis Amplifier 4 3 Intensity Gate 4 3 Control Circuits 4 3 Pulse Circuits 4 3 Detailed Circuit Theory 4 4 Low Voltage Power Supplies 4 4 High Voltage Power Supply 4 5 X and Y axis Amplifiers 4 5 Z axis Amplifier 4 5 Control Circuits 4 5 Pulse ...

Page 5: ...331A Controls and Con nectors 3 3 3 2 Preoperational Procedure 3 4 3 3 General Operating Procedure 3 5 3 4 Multiple Display Procedure 3 6 4 1 CRT Schematic 4 3 4 2 Secondary Emission Ratio 4 3 4 3 Erase Cycle 4 3 4 4 Variable Persistence Pulsing 4 3 4 5 Pulse Circuits Block Diagram 4 5 4 6 Overall Block Diagram 4 7 4 8 5 1 Phase Shift Trace 5 3 5 2 Erase Waveform 5 4 5 3 Write Depth Waveform 5 7 5...

Page 6: ...ues 2 3 2 2 Attenuator Components Parts List 2 3 2 3 Z attenuator Component Values 2 3 3 1 Definitions 3 1 5 1 Recommended Test Equipment 5 1 Performance Check Record 5 6a 5 6b 5 2 Low Voltage Power Supply Adjustments 5 7 6 1 Abbreviations for Replaceable Parts List 6 1 6 2 Replaceable Parts 6 2 6 3 List of Manufacturer s Codes 6 11 6 12 8 1 Schematic Notes 8 6 Model 1331A ...

Page 7: ...c ...

Page 8: ...General Information Model 1331A 1331A A 7 Figure 1 1 Model 1331A X Y Display 1 0 ...

Page 9: ...e display Spot blanking is obtained with IV Maximum brightness is obtained with 1V In between voltages provide shades of gray 1 9 Model 1331A is proportioned to permit mount ing two instruments any HP 1330 1331 series instru ments side by side in a standard 19 inch rack Refer to the paragraph on available accessories in this section for a description of a suitable rack adapter 1 10 CATHODE RAY TUB...

Page 10: ... Differential 20k ohms shunted by approx 60 pF INPUT 1Vblanks spotofany intensity 1V turns beam full on MAXIMUM INPUT lOV de peak ac RECOMMENDED SOURCE IMPEDANCE 20k ohms between center conductor and shield lk ohm from shield to ground CATHODE RAY TUBE AND CONTROLS 1 2 TYPE post accelerator storage tube 7 5 kV accel erating potential aluminized P31 phosphor GRATICULE 8 x 10 div internal graticule ...

Page 11: ...Designators and Abbreviations REFERENCE DESIGNATORS A assembly E misc electrical part p plug u Integrated circuit AT attenuator F fuse PS power supply unrepairable resistive termination FL filter Q transistor v vacuum tube neon B motor fan H hardware A resistor bulb photocell etc BT battery J Jack VA voltage regulator c capacitor K relay RT thermistor diode CP coupling L inductor s switch w cable ...

Page 12: ... ...

Page 13: ...OR switch to the voltage desired and install the appropriate fuse in the fuseholder on the rear panel Correct fuse size is indicated above the fuseholder 2 11 POWER CONNECTIONS 2 12 Hewlett Packard recommends that tlie instru ment panel and cabinet be grounded Model 1331A is equipped with a three conductor power cable that when connected to an appropriate receptacle grounds the instrument through ...

Page 14: ...or generating large amounts of current One method of reducing the interference is to ground the shield at the input Sometimes however a common mode rejection capability is needed to reject noise common to both the shield and the center conductor At other times ground loops may develop when the shield is directly grounded In these cases a satisfactory compromise is accomplished by substituting a lo...

Page 15: ...48 R fixed metal film 51 1k ohms 1 1 2W 0757 0853 R fixed metal film 20k ohms 1 1 2W 0757 0190 R fixed metal film 10k ohms 1 1 2W 0757 0839 R fixed metal film 10k ohms 1 1 8W 0757 0442 R fixed metal film 9090 ohms 1 1 8W 0757 0288 R fixed metal film 5110 ohms 1 1 8W 0757 0438 R fixed metal film 1000 ohms 1 1 8W 0757 0280 R fixed metal film 100 ohms 1 1 8W 0757 0401 C variable 5 5 18 pF 0121 0061 C...

Page 16: ... A i Ra Re Cc C 2 7 SHIELD B i Rb Rd Cd Figure 2 3 X Y Amplifiers Input Circuit c 2 7 C CcE R 8 0 D dA D CJ JJ o o t o 00 i o 00 t l2a o 2 7 Figure 2 4 AttenuatorComponents Locations on Main Board A5 Model 1331A 1331A A 10 1331A A 8 ...

Page 17: ... paragraphs on x and y axis attenuation applies here but com pensation may not be required when Ra and RC have been changed to produce a low termination impedance l kilohm 2 32 When shunting a resistance across the am plifier input to change lower the impedance the main consideration is the desired impedance Select a resistor a nd insert it between the amplifier input and ground point A on figures...

Page 18: ... ...

Page 19: ...ne action required to return beam to viewing area e Set BEAM FIND to off Model 1331A will not operate correctly with BEAM FIND set to ON 3 7 INTENSITY A high intensity display over an extended period of time can cause burn damage to the CRT display area Table 3 1 Definitions Word or Phrase Definition Write To transform an input signal into a visual display on the CRT Persistence The length of time...

Page 20: ...appli cations 3 11 PREOPERATION ADJUSTMENTS AND OPERATOR S CHECKS 3 12 The preoperational procedure is shown in figure 3 2 This procedure also serves as an operator check to verify proper operation of the instrument 3 2 Model 1331A 3 13 OPERATOR S MAINTENANCE 3 14 Operator s maintenance of Model 1331A is limited to the operator s checks in paragraph 3 12 and exterior cleaning of the instrument Pul...

Page 21: ...si tion of trace 9 LINE indicator Lights when operating power is applied to instrument 10 LINE switch Applies operating power to in strument Operation B A 1331A A 1 REAR PANEL A LINE Connects instrument to operating power B FUSE Protects instrument from current over loads C SELECTOR Connects power transformer for 115V or 230V operation D BEAM FIND Brings off screen trace back into viewing area Ref...

Page 22: ...play dot will move hori zontally across CRT and out of viewing area at either extreme of control 7 Adjust VERT POSITION control through its full range Display dot will move vertically across CRT and out of viewing area at either extreme of control 8 Adjust HORIZ and VERT POSITION con trols to center display dot on CRT 9 Apply 1 kHz 1V p p signal to X INPUT connector This will cause horizontal trac...

Page 23: ...nd persist ence when writing a display re duces the time a display can be stored TO STORE 4 Press STORE pushbutton TO ERASE 5 Press WRITE pushbutton 6 Press ERASE pushbutton 7 Erasure should take place prior to writing each new piece of information except in cases where two or more pieces ofinformation are to be displayed simultaneously Figure 3 4 Figure 3 3 General Operating Procedure Operation 1...

Page 24: ...itten will not interfere with information previously written NOTE Keep write periods short Each write period reduces the time that previously written informa tion can be stored 5 Press WRITE pushbutton 6 Use HORIZ and VERT POSITION controls to position trace as desired 7 Press STORE pushbutton after desired in formation is written 8 Repeat this procedure as many times as desired Figure 3 4 Multipl...

Page 25: ... this sheet and return it with the defective CRT to Hewlett Packard Company 1900 Garden of the Gods Road Colorado Springs Colorado 80907 Attention CRT QA To avoid damage to the tube while in shipment please follow the shipping instructions below warranty credit is not allowed on broken tubes SHIPPING INSTRUCTIONS It is preferable that the defective CRT be returned in the replacement CRT carton If ...

Page 26: ... SERIAL NO 3 CRT SERIAL NO ____ _ ______ _______________ 4 Please describe the failure and if possibl e show the trouble on the appropriate CRT face below 5 Warranty claimed Yes ____ No _____ 6 HP Sales Service Office _______ Repair Order No HEWLETT PACKARD COMPANY 1900 GARDEN Of THE GOOS ROAD COLORADO SPRINGS COLORADO U S A t It ...

Page 27: ...d by the collector mesh 4 9 The discussion in the previous paragraph as sumed that the write gun was turned off If the write gun is now turned on the electron beam whose energy is much higher than the flood electrons strikes the storage surface with such force that elec trons already on the storage surface are knocked off secondary emission The secondary emission electrons are collected by the col...

Page 28: ...noticible under some conditions is a light background glow on the CRT While the storage mesh is pulsed positive flood electrons pass through all areas of the mesh to the phosphor viewing screen evenly exciting the entire surface 4 19 STORAGE 4 20 In store mode erase pulses are not applied to the storage mesh and persistence store time is 4 2 Model 1331A iimited primarily by an effect called fade p...

Page 29: ...ORAGE MESH POTENTIAL IN VOLTS COLLECTOR MESH 1331A A 12 1331A A 13 Figure 4 1 CRT Schematic 158 154 iii t 144 x 0 a I 14 10 w t _J 0 w t 4 0 5 10 14 14 10 5 x 4 0 a a t 0 w 5 0 10 PRESS ERASE JI Figure 4 2 Secondary Emission Ratio RELE SE ERAS i 1 1 2 SEC ot 1 STORAGE MESH POTENTIAL I STORAGE SURFACE POTENTIAL L Figure 4 Erase Cycle 1331A A 14 STORAGE MESH POTENTIAL STORAGE SURFACE POTENTI AL 1331...

Page 30: ... of the blanking amplifier to the gate amplifier The LO output from the write gate also enables the storage gate this permits the pulses from the pulse generator to turn the storage gate on and off The resultant pulses are applied through the storage erase circuit to the CRT storage mesh 4 41 Store Mode See figure 4 5B A store com mand HI is applied on the mode input to the in verter The LO output...

Page 31: ...ioning oftheinstru ment and are not a discussion of basic electronics For instance the text may state that a circuit func tions as a Darlington amplifier and assume that the 4 4 l 1odel 1331A reader knows how a Darlington amplifier works Un usual circuits will be explained in greater detail The detailed circuit theory is keyed to the sche matics located in Section VIII A reference is made to the a...

Page 32: ... END OF PRIME TIME WRITE MOOE A LO ov STOR MODE n 5 8V J Lov jA fl 10 1 ov STORAGE ERASE Theory TO STORAGE MESH J J1 t 1__ A 5 _ 0 4_ 2 _ 4 4 J____ TO COLLECTOR MESH LO ov HI 201 COLLIMATOR DRIVER A5Q50 51 LO TO COLLIMATOR TOY AMPLIFIER X 0 v TF ER STORAGE ERASE TO STORAGE MESH J Jlr tl 1__ A 5 _ 0 4_ 2 _ r TO COLLECTOR MESH HI 0 71 LO ov 1 B j Ll 20V ov COLLIMATOR DRIVER A5Q50 51 HI TO COLLIMATOR...

Page 33: ...e explained 4 73 The input stage consists of two Darlington pairs A5Q5A A5Q7 and A5Q5B A5Q8 connected as a differential emitter follower pair This configura tion provides the required high input impedance for the Y INPUT and the current drive for the following amplifiers 4 74 Common emitter amplifier A5Q9 A5Q10 pro vides variable gain Amplifier gain is controlled by adjusting vert gain potentiomet...

Page 34: ...1A This negative change is coupled through A5C35 drop ping the voltage at the base of A5Q52 toward 4 5 volts Immediately the capacitor starts charging through A5R123 towards 50 volts The time required to charge A5C35 to 1 4 volts turn on voltage for A5Q52 and A5Q39 is approximately800milliseconds This is the basic timing for the erase cycle 4 89 Erase Switch The erase switch A5Q52 and A5Q39 is a D...

Page 35: ...f I PULSE CIRCUITS WRITE DEPTH ADJ BLANKING WRITE GUN INTENSITY LIMIT HV 1 ADJ I 0 I I I I IFocus I COLLECTOR MESH 15BV Theory I I 0 I I POS I ACCELERATOR 7o5KV I I I I I I I I I I HIGH VOLTAGE I WRITE GUN FOCUS POWER SUPPLY IWRITE GUN GRID I I 1 WRITE GUN CATHODE _ 1 I n1I _J FLOOD GUN GRID FLOOD GUN ACCELERATOR COLLIMATOR STORAGE MESH VLINE 1 L J 0 J4 0 Fl LINE L __ J v 0 I I I I I I I g Ecf2RJ ...

Page 36: ...ons to arrive at the storage surface at an angle where they can flood those areas on the storage sur face normally shaded by the collector mesh When the output from the erase switch goes HI it causes the output of the collimator driver to rise from 65 volts to 93 volts during the erase timing period 4 94 Flood Gun Switch The flood gun switch consists of common emitter amplifier A5Q45 am plifier sw...

Page 37: ...use recently calibrated test equipment 5 5 PERFORMANCE CHECK 5 6 The following paragraphs describe procedures to determine ifthe instrument meets the specifications listed in the specification table located in Section I These procedures can be used as part of an incoming inspection as a periodic operationa l test or to check calibration after repairs or adjustments have been made Any one of the fo...

Page 38: ...e not been modified as described in Section II 5 13 Specification A 1V p p signal at the X INPUT shall cause a 10 div 3 h orizon tal deflec 5 2 Model 1331A tion on the CRT A l V p p signal a t the Y INPUT shall cause an 8 div 3 vertical deflection 5 14 Equipment Square wave generator i 16 Procedure a Set Model 1331A controls as follows WRITE In INTENSITY as required PERSISTENCE ccw POSITION HORIZ ...

Page 39: ...331A controls as follows WRITE in INTENSITY as required PERSISTENCE ccw POSITION HORIZ and VERT _ centered b Apply 10 kHz output of sine wave generator to X INPUT Adjust amplitude for 10 div deflection on CRT c Using oscilloscope measure and note am plitude of sine wave at INPUT d Change frequency of sine wave generator to 1 MHz e Adjust a mplitude at INPUT to match that noted in step c f Observe ...

Page 40: ... front panel INTENSITY control to obtain sine wave at intensity gate output that is of maximum ampli tude with no clipping at top or bottom Note am plitude of intensity gate output p Increase frequency of sine wave generator output until amplitude of sine wave at intensity gate output drops to 70 7 of amplitude noted in step o Frequency shall be equal to or greater than 5 MHz q Turn Model 1331A of...

Page 41: ... just offCRT viewing e Connect output of pulse generator to Z area INPUT f Press and release ERASE pushbutton g Momentarily switch pulse amplitude to posi tive then back to negative Dots shall be written over entire CRT viewing area A small amount of degradation is permissible in the outer 0 5 division of graticule h Ifnecessary perform writing rate adjustment paragraph 5 75 5 40 STORE TIME CHECK ...

Page 42: ... ...

Page 43: ...t 10 0 3 div 10 0 24 div 1 2 minor div COMMON MODE REJECTION RATIO CMRR x axis amplifier 1 5 minor div y axis amplifier 1 2 minor div BANDWIDTH x axis amplifier 7 07 div y axis amplifier 5 65 div Z AXIS AMPLI Fl ER Maximum 1V p p Risetime and falltime 70 ns Minimum 1V p p Bandwidth 5 MHz ERASE TIME Erase cycle 850 msec DOT WRITING TIME Z INPUT pulse width 4 usec STORE TIME Pattern stored 15 minute...

Page 44: ... ...

Page 45: ...nstructions on calibration of modi fied instruments 5 47 LOW VOLTAGE POWER SUPPLY ADJUST MENTS 5 48 Reference Schematics 1 and 2 tables 5 1 and 5 2 and figure 5 4 5 49 Equipment Digital voltmeter 5 50 Procedure Make voltage adjustments and checks as shown in table 5 2 Make 50V adjustment first because other outputs are referenced to 50 volt power supply 5 51 HIGH VOLTAGE POWER SUPPLY ADJUST MENT 5...

Page 46: ...ure 5 4 6 fi 5_ Hquipment Digital voltmeter j j_ Procedure 5 8 a Set Model 1331A controls as follows WRITE in INTENSITY ____ 10 o clock PERSISTENCE ccw POSITION HORIZ a nd VERT centered w _ io 1 Model 1331A WARNING I The write gun intensity limit adjustment is in a high voltage circuitand mustbe ad justed with an insulated tool b Set write gun intensity limit A3Rll fully cw Do not permit spot to b...

Page 47: ...3Ql0 Adjustments g Turn INTENSITY cw until amplitude of in tensity gate output pulse is maximum h Change pulse polarity to negative 1 Press and release ERASE pushbutton j Momentarily switch pulse polarity to positive then back to negative Resultant dot pattern on CRT should be uniform over entire graticule area except for a small amount of allowable degradation on outer 0 5 division k If pattern i...

Page 48: ...er probe 5 10 Model 1331A S Hfi Procedure a Turn LINE switch to off b Disable high voltage power supply by dis connecting collector lead to Q5 bluw wire to A3 c Set LINE switch to ON cl Set Model 1331A controls as follows STORE m INTENSITY ccw PERSISTENCE ccw POSITION HORIZ and VERT centered e Set pulse generator controls as follows repetition rate 500 kHz pulse width 1 usec pulse polarity positiv...

Page 49: ...A1R22 50V ADJ A3R1 l WRITE GUN INTENSITY LIMIT a ey I Ci QO Q OOOOOGOO A5J1 4 A5J1 2 JUNCTIONS A3R23 C12 A306 C INTENSITY GATE OUTPUT ...

Page 50: ...A5R18D COLLIMATOR ADJ A5C13 PHASE SHIFT ADJ STORE TIME ADJ A6R2 A5R18C FLOOD GUN GRID ADJ A5R71 m 1 HOR IZ GAIN REMOTE CONNECTOR J5 HIDDEN 13 l1A B 4 Figure 5 4 Adjustment Locator 5 11 5 12 ...

Page 51: ...mplifier to display a square wave on the CRT In that case adjust the series capacitance to obtain the flattest possible top to the square wave 5 93 INPUT SIGNAL AMPLITUDES 5 94 After phase shift and attenuator compensation have been accomplished the remaining adjustments can be made by modifying the amplitudes of the signals given in the adjustment procedures For in stance if the adjustment proced...

Page 52: ... ...

Page 53: ...ection s centi l 10 CAR carbon IMPG impregnated description SI silicon CCW counterclockwise INCD Incandescent OH oval head SIL silver CER ceramic INCL include s ox oxide SL slide CMO cabinet mount only INS insulation ed SP single pole COAX coaxial INT internal p peak SPL special COEF coefficient PC printed etched ST single throw COMP composition kilo 10 3 circuit s STD standard CONN connector s K ...

Page 54: ...NT IUHHEk lfOCUS I INSULA I U CUNNELTOM 8RACktT Ckl CONT MOUNTING COVER SCJL EI SUPPOkT CM SLIPPORT C T SH IElU SH I El O HICU VOLT AC E POWER SUPPLY 8RAtkt T KECTlflEM LAPAC ITOR CUVEM HlGH VULTAGt TMIPltR ASSY 8lltl CATHUO RAY TUBE 8HEl O lVl 0tk llHEl l OE dHEl TOP dEUL blllTON BElEL ltH S I Ot I NSULAT UR C P SHI EL U CAIHUUE KAY TUBE SCPIHN AS SY SPACtR At INET uASktl HluH VOL TAGE CONNEC TOR...

Page 55: ...UO b7501 I TtkMINAl bUAkU l RANSFUkMER 2d4 0 0 12 00 07501 VI u83 2 74 I C k f SPtC IAl l 4b0 50U3 2574 Id I 20 IJ48 I C Aol AS Y PU f R OtT ACHABLE 70 10 KHS 70 41 3 OIJH l bO l I CAdlt MA I 2H 4dU Ol331 b l 601 w4 013H l602 l CAd L E N l H VU LTA c ld4 80 013J l b l 602 ws OIHl 6160b I CARL t PUwt K 2d4d0 0 1 33 1 61608 W o 0 133 1 61609 I CAblt C APAC l I Uk 204 b0 0 1 H l bl609 01 ASS I G tU l...

Page 56: ...U LOHP 1000 OHM l Ot l 4w 01121 CB lOll Al k 1 3 0 84 o31 I RIFXO COMP SbK UHM 10 l W 01121 C b 5b31 Alkl Oo9b 3 43 1 R fXO MET HM lb 1 OHM u 1 811 2o b0 0611 J443 Alld5 0757 0750 1 R fXO HH FLH bblO OHM u l 4 2 b 80 0757 0750 AI Rlb 0684 H3 l I R FXO COMP 33K OHM 10 l W 01121 Cd 333 1 AI R17 0684 4 741 3 k FXO COMP 70 OHM 1 0 1 411 Cll 121 C b 4741 AIM 18 075 7 0757 2 RHXD MEI FlH 1 5K OHM u l 4W...

Page 57: ... U llHW R fXO Ht T 1 LH lUOK OHM ll l 8k k f xO HE T fLH 511K OHM ll 11 2 K VAR COHP LOOK OHM 20l LIN 1 4 1 R FXO CUHP 12UK OHH l vl l 4W R fXO Ht 1 LH JU M EI OHM l l 2 R VAR COMP l HEGOHH 201 LIN l 4W R fXO fLH 29 MEI OHM l OZ l I k fXO COHV lHE OHM U l 4W NOi ASS I GMO R fXO COMP 2 7 HEGOHH l Ol l 2W R rx o COMP Oob MfGOHH 1 0 1 21 R f O CC HP 6 8 HEGOHH 101 2W tl FXU LOHP b 11 HEGOHM l Ot 2k M...

Page 58: ... LOovoc C FXO MI CA 70 Pf C FXO MY 0 00LL UF 1 0 ZOOVUC W C FXO MILA J3 PF 5 C FXO MI LA 270 Pf 5 C FXO HY O UOL5 Uf l Ol 200VOC ClfXO MILA 33 Pf 5 C FXO MI CA 150 Pf 5 C FXO CEk 0 02 UF tiU 20S 10ovuc C FXO CtR 0 0 2 Uf 80 20l l OOVOLw C FXO EllCl 15 Uf 10 20 VlJC C FXO MY 0 1 UF LOS 200VOC W C f XO MY O I Uf 1 0 20oVOC C Fxo MICA L300 PF ClfXU Ctk O U2 Uf 0 20S lOOVlJC W C FXU MI CA it70 Pf SS C...

Page 59: ... Sk 135b li A5CR5 I 1901 00 25 OIUOE S lLICUN lOOHA lV 1 7263 1 U 238 7 A5C 52 NUT ASS I GNEO A5CR53 190 1 0040 OIOOE S I LICUN O HA o v 0 7263 FDi 1088 A5CR5 19lll 0040 OlOOt SILICON 50 HA 30 WV 07263 1 D 1088 A5CR5 5 1901 0040 DIODE SI LI CON 50 HA 30 WV U 263 FUG10l 8 A5CR5o 190 1 0040 DIOOt S ILICUN o HA 30 WV U7263 HJGl088 A5CK 7 1901 0044 lJI OUt SI LICON 20HA l V 2 4 80 1901 0044 A5F l l l ...

Page 60: ...1 l8 1021 A5R4 0684 2241 I k FXO C UMP 2 20K OHM 101 l 4W 01121 C8 l24 l A5k5 Oo84 H2 l I FXO UMP 3 00 OHM I OI l 4W 01121 C 8 3J2 l A5Ro 0757 0388 I k Hu LH 30 l OHM II l 8W 28 80 075T 0Jd8 A5R 7 0757 0 58 k FXO Mt fLH 5 1 IK OH u I SW 28480 0757 0458 A5R8 0084 10 41 l FXO JMP IOOK OHM 1 0 l 41o 0112 1 C b 1041 A5R9 Oo9d 342 l I i fXO MET FLM 4b 4K UHM 1 l 2W 2d480 0698 3423 A5Rl0 0157 085 1 I R ...

Page 61: ...U 06 3159 A5k 75 NUT ASS l GNtU A5k7b 0098 0085 R fXO MU fLM 2 0 1K OHM I t l 8 w 284 80 0698 0085 A5k 11 1 01 ASS I GNED A5k 78 0698 0085 R rxo M T FU 2 61K OHM u l dW 28480 0698 008 5 A5R 7 075 7 0 413 R rxu MtT flM J9 2 OHM II l 8W 20460 0 757 04 13 A5Rd0 uH7 0394 k rxu H f t L K 51 l OHM u 1 aw 2b480 OH7 0394 A5 8l 0 75 7 0394 R FX O MtT FLM 51 IOHM IS I SW 28400 0 75 7 0 94 A 5R82 0 7 5 7 074...

Page 62: ...57 0367 R FXU MET HM IOOK OHM ll II 2 28 4 60 0757 0367 A R 159 0684 4131 R FXO COMP 47K OHM 10 l 4W 01121 Ct 4731 A5R l6 C NOT ASS I GNEO A5R l 6 1 0684 2741 l R FXO CUMP 270K OHM LOX l olo Ol l2l CB 2741 A R 162 Ob64 4 7 ol RtFXO COMP 4 70K OHM l l l 4W 0 11 21 C l 4 741 A5Rl63 0684 823 1 I R FXCJ COMP o2K OHM IOI l 4W 0 1121 Cb 8231 A5Rl6 4 07 57 0951 R HO F l M 131 OHM 2 1 l l 28480 0757 0951 ...

Page 63: ...U S A CQ MO ANY SUPPL I ER J F U S A 011 21 ALLEN u AnLE Y Cu MI LWAU EF WIS 53204 O bb AMPHE lnl 1 nkv Br OAOV Ew TLL 60 1 53 0 4111 MC T O JLA SH I ll NO UC TUH Pr Or T NC PHOEN IX AKIZ 85008 0 7263 f HCH IL J C e h H ST r ORP SEMICUNl UC TOR D IV MOUNT AIN VIEW CALIF 94040 08ti01 G F Cll M I lol l l TlH F LAMP llE PT CLEVELANll 01110 44112 13Qlq A I RCU SUH LY Cll INC WITCHI TA KANS 67213 13103...

Page 64: ... ...

Page 65: ...r such as Model OOOOA Option COL 7 9 An operating and service manual and a manua l insert are provided with each specia l option instru ment The operating and service manual contains in formation about the standard instrument The ma nual insert for the special option describes the factory modifications required to produce the special option instrument Amend the operating a nd service manual by cha...

Page 66: ... ...

Page 67: ...andard Y32 l 6 1968 Reference Designations for Electrical and Electronics Parts and Equipments dated March 1 1968 Minor variations from the standard due to design and manufacturing practices may be noted 8 10 Each electrical component is assigned a class letter and a number This letter number combination is the basic reference designation Components which are part of an assembly have in addition t...

Page 68: ...move contrast screen MP3 by pulling up wards f Remove CRT bezel MP23 by removing four screws g Remove CRT socket cover MP17 by removing four screws 8 2 Model 1331A h Loosen CRT base cla mp screw on CRT shield support MP19 i Remove two screws in right frame MP5 holding low voltage rectifier board A2 j Slide low voltage rectifier board toward top of instrument not necessary to remove board entire ly...

Page 69: ...l settings or circuit Service connections can cause apparent malfunctions Read Section III Operation for an explanation of controls and connectors a nd general operating considera tions Read Section IV Principles of Operation for ex planations of circuit theory 8 42 If trouble is suspected visually inspect the in strument Look for loose or burned components that might suggest a source of trouble C...

Page 70: ... 4 C4 B 3 CR6 B 3 Q3 C S cs B 2 CR7 B 3 Q4 C 3 C6 0 1 CR8 B 3 as C 3 CR1 0 S F1 E 4 R1 0 3 CR2 C 4 F2 0 4 R2 0 5 REF OESIG R3 R4 RS R6 R7 RS R9 R10 D QI A2U2 v Y A2U 3 GRID REF GRID LOC DESIG LOC 0 5 R11 0 S 0 3 R12 B S 0 4 R13 C 5 B 3 R14 C 4 0 4 R1S C 4 0 5 R16 C 4 0 3 R17 B 3 B 5 R18 B 2 Figure 8 1 Al Component Locator Model 1331A E F 1 2 3 MPI 4 5 6 7 REF GRID DESIG LOC R19 B 3 R20 B 2 R21 B 1...

Page 71: ...3 o5A Pl L 7 5 29 4V A5Jlx 6 I J I 1PI Rl3 56K CR5 Pl CRI IREFER TO SCHEMATIC NOTES I TABLE FOR SYMBOLS ANO CONVENTIONS Cl o IUF R5 43 2 5 2 v R 28 C3 olU F VR4 111 1v C4 2 2uf lie 7V 15 10 50V Rl6 33K R6 22ol K o ev RB 12oBK C2 20UF 21 3320 CR4 C6 20UF I h I R22 1000 I 0 LI TRACE ALIGN COIL r d i __ 95 50V RIO Ocw 92l 3300 94 t J gK I TRACE I _A G 7 I ov I _J I JI 7 GND I REFERENCE DESIGNATIONS C...

Page 72: ... 6V I 5 J x l _J J Pl tt ___ R2 1000 R3 43o2K I I 50V 5 2 v CI o IUF R5 0 V CR3 43 2 IU v R6 R8 22 IK 12o8K l t 50V C2 20UF 50V CR4 I ct RIO 3300 94 I Pl r Ji 4r I I I I IRJJ I F3 Pl 5A 5 12 I Pl 7 µ Pl 5 _1 A5JI I Pl r _ Jrn r r _ I 12 968 I I R3 _ i_ 1 IOOK I I 8 I I I 21 23 VAC 2 7 I C3 300UF I l__ I l I I I IPl I I I I Rl2 I I I 1000 I I I I I VR3 Ir I 56 2V 1 I L___J I CR5 ______ Pl Rl3 56K R...

Page 73: ... Thi s permits solder ing from either side of the board REF OESIG C1 C2 C3 R1 R2 R3 V1 V2 V3 D GRID LOC A 3 C 3 D 3 A 3 B 3 C 3 B 4 C 4 D 4 Figure 8 2 A2 Component Locator E F 1 6 5 2 HIDDEN HIDDEN 50V A5J3 5 4 3 HIDDEN A5J3 4 3 HIDDEN 4 50V I 2 HIDDEN HIDDEN A5J3 I 200V 5 6 1331A C A 6 ...

Page 74: ...or with dashed lines phantom show 25 _ function only and are not intended fr 10 NC No connection I to be complete The circuit or I component is shown in detail on II Waveform test point another schematic with number 26 925 Wire colors are given by L_ numbers in parentheses 12 Clamp type connector using the resistor color code 925 is wht red grn L 0 black 5 Green 13 Single pin connector on board 1 ...

Page 75: ... NVENTI ON S I CR8 Rl5 10 Oo5V CR2 t 50V F CRI RS 30 1 I Cl 0 1 R7 51olK t C2 IOUF 50VF t RB IOOK 50 VF 85o3V t 50VF 50oSV CR3 t 50WF 12 sv R9 4So4 K RIO 43 2K t 50VF l l DO NOT I 902 I 100 11 ev I SCRI t 50VF CRIO I C5 I UF cs 0 01 t33tA 12 06 V 8 158 1 PWR SUPPLIES 1331 A b 5A l r GND I REFERENCE A5 Cl S CRI 10 Fl QI 4 RI 21 SC RI VR 1 3 J DESIGNATIONS CHASSIS Cl 03 04 Figure 8 5 Schematic 158V ...

Page 76: ... S OR GOS DIODES DIODE SYMBOL METAL CASE ANODE CATHODE WID I STRIPE _ CONICAL r TH REND tho _J CATHODE CATHODE D9ft nCATHODE CATHODE Bl POLAR TRANSISTORS BLACK EPOXY PLASTIC TRANSISTORS T ff EC B E C B E B C METAL CASE TRANSISTORS DUAL 7000 8 19 Figure 8 4 Semiconductor Terminal Identification ...

Page 77: ...A 8 c D E F 1 MPI 2 PLACES 1 2 3 12 6V Jj ACCEL A3 153V 50V GND 4 50V 4 Z AXIS INTEN BLKG R3 W GND 5 5 50VF 61 TO Q5 0 1331A C A 12A Figure 8 6 A3 Component Locator ...

Page 78: ...ed through component holes This permits solder ing from either side of the board REF DESIG C1 C2 C3 C4 C5 C6 CR1 CR2 R1 R2 T1 D A4 GR ID LOC D 4 D 4 E 4 E 4 E 4 E 4 D 3 D 3 D 5 E 3 B 3 Figure 8 7 A4 Component Locator E F 1 2 3 4 5 6 1331A C A 8 ...

Page 79: ...Service Model 1331A A7 947 945 R2 HI ODEN JI R3 HIDDEN MP3 MP4 MP3 1331A A 9 Figure 8 8 A7 Component Locator 8 8 ...

Page 80: ...6 4700 C9 I l C24 4700 4700 4700 4 RI I tOOO r__ ____ _T __ 1 1 47 I L_ CR2 R2 I I 2915V 12 6v 1 I 12 6vF2 L 15K A5J2 IPl C2 J I RI I 6 8UF I I 2o7M I 158V 4 158 50V 50V I l I 50V L3 22 A5J2 Ip I 6l cwPIFOcusl 12 6VF2 50V K I R4 HV I 5M 2 5ov 5 1 Pl R Ic 3 c23 A5J2 10 itOUF oO IUF 5ov 1 5 v A5J2 Pl I c 6 Pl Ob C4 i 0056 R3 150 CRIO CRll ADJ L_ REGULATOR fR4 R6 6 02 220 IOOK R8 RIO C7 11 sv IOOK 30...

Page 81: ...ld 3 All voltages are referenced to chassis ground All indications are nominal and may vary slightly WAVEFORM MEASUREMENT CONDITIONS 1 Same as de measurement conditions 2 Same as de measurement conditions except WRITE in INTENSITY dot barely visible Z INPUT ground shield Apply 50 V DIV 10 USEC DIV 2 ms 770 Hz 1V p p pulse to center 2V 20 V DIV 0 5 MS DIV Figure8 9 Schematic3MeasurementConditions a...

Page 82: ...l5 Rl83 6190 t R40 50V 26olK 50VF R41 26olK COMMON EMITTER AMPLIFIERS 09 QIO 0 3V CRl7 R43 2610 R45 26 0 R46 392 7o5V R47 51 ol I I I I I OUTPUT CASCODE AMPLIFIER Q55A Ql4 917 9 r I VERT 1 LPOSITI0 1 Cl3 Oo7 3 PF Ii R53 15K R54 15K reEAM 1 I FIND 1 LI S3 CURRENT 240 1 I y r 1 SOURCE I I LON J PHASE SHIFT ADJ 00 96 R7 I 2500 191 LJ J 27V 158V 0 R50 1100 I ov 7 91 R51 4320 R52 1000 L2 240 I Service ...

Page 83: ... connectors to shield 3 All voltages are referenced to chassis ground All indications are nominal and may vary slightly WAVEFORM MEASUREMENT CONDITIONS Same as de measurement conditions except X INPUT ground shield Apply 100 Hz 2V p p sine wave to center 0 5 V DIV 0 5 MS DIV 1 V DIV 0 5 MS DIV ov 10V 0 5 V DIV 0 5 MS DIV 50 V DIV 0 5 MS DIV Figure8 ll Schematic4MeasurementConditions and Waveforms ...

Page 84: ...Y PIO ii a VR8 C43I8 25 0 22 UF Rl76 8250 u 1 AA ___ t_ Rl73 I I I I CR31 z AXIS 05 50V t MPLI FIER 054 Rl79 120 IK 50V 50V C R32 Rl82 10 K J AMP 1331A Z AXIS 1331A C 2 Service Figure 8 14 Amplifier Schema ic 8 1 t z ax1s 3 ...

Page 85: ...T connectors to shield 3 All voltages are referenced to chassis ground All indications are nominal and may vary slightly WAVEFORM MEASUREMENT CONDITIONS Same as de measurement conditions except WRITE in INTENSITY dot barely visible Z INPUT ground shield Apply 0 5 V DIV 0 5 MS DIV 2 ms 770 Hz 1V p p pulse to center 1 V DIV 0 5 MS DIV Figure8 13 Schematic5 MeasurementConditions and Waveforms 1331A C...

Page 86: ...0V 12 sv GND R2 R2 Circuit boards have plated through component holes This permits solder ing from either side of the board REF GRID DESIG LOC R1 C 3 R2 D 3 w ccw AG Figure 8 15 A6 Component Locator Model 1331A E F 1 2 J 4 5 6 1331 A C A 7 ...

Page 87: ...0 0 0 0 RI IOK MODE R2 0 IOK 7 g lli 7 I I Service 1 Pl 1 1A6 lSTORE TIME A_ss_v_ Vl 7 RI 75K A5J4 7 8 R2 IM Pl A5J4 7 12 cw I 14 7 L______p l J A5J4 STORE TIME ADJ REFERENCE DESIGNATIONS CHASSIS A6 AB R5 Rl 2 Rl 2 Sl 3 1331A CONTROL CIR 1331A C t Figure 8 17 t Control Circuits Schema ic 8 15 ...

Page 88: ...8 Circuit boards have plated through component holes This permits solder ing from either side of the board c D AS REF GRID DESIG LOC R1 C 4 R2 C 4 S1 0 3 S2 C 3 S3 C 3 Figure 8 16 AS Component Locator E F 1 2 3 4 5 6 1331A C A 5 ...

Page 89: ... _ c _ _ t ti _ LU i 2 I 1 r F11 i 2fg J ga2s lmlD llllil r t 1 _ t i I 2 1 Ml R4 cR9 r t 1 r l _ _ lf 3 4 5 6 7 8 Circuit boards have plated through component holes This permits solder ing from either side of the board 8 16 3 4 5 6 7 A5 8 Figure 8 18 A5 Component Locator ...

Page 90: ...HIS SCHEMATIC r ULSECKTS t243A I A5 I G tk J J r 6 I 1 L__ _ C24 42 45 4 I I CR33 52 55 57 I Kl L5 031 51 57 59 R99 132 134 149 151 159 ISl 168 185 191 VR4 7 DELETED Rl 67 ERASE SWITCH 052 039 R51 CR52 T JUNCTION I I L5 K1n Rl24 IOK R143 IOK C32 150 RIIS IOK t 50VF STORAGE GATE CR34 RIIS 10K Rl40 50VF 220 WRITE _ DEPTH R18B l ADJ 25K R144 2740 C30 1500 Rl31 1Se2K 12 sv R186 1000 T T T T VR4 45e3V ...

Page 91: ... 1 4 R110 0 4 R170 G 4 C31 E 5 CR41 E 3 042 B 6 R40 1 4 R111 C 3 R171 H 4 C32 C 5 CR42 C 3 043 B 5 R41 1 4 R112 0 4 R172 H 1 C33 E 7 CR43 E 3 044 B 3 R43 H 4 R113 C 4 R173 L 1 C34 E 7 CR44 E 4 045 C 4 R45 1 5 R114 C 4 R174 L 1 C35 0 5 CR45 C 4 046 B 3 R46 1 6 R115 E 5 R175 L 7 C36 0 3 CR46 C 6 047 B 3 R47 1 6 R116 0 4 R176 1 7 C37 0 4 CR47 C 6 048 C 6 R48 1 6 R117 E 4 R177 K 7 C3ft B 4 CR48 E 6 04...

Page 92: ... 57 9 R99 132 I 4 149 151 159 16 168 18 5 19t VR4 7 DELETED R 7 464 WRITE GATE 037 0 1V l Rt1 5 tOOI t 1 2 e6V t2 6V I l I 50VF R1 58 100K Rl 59 47K 0 20 USEC DIV 1V DIV CR52 ov 1 3V 20 USEC DIV 1V DIV Rl 4 2 41so I Service 50V 31V JUNCTION L5 K1 Rl39 t33K t 501 F R130 IOK VRO 14 71 sor FLooo I GUN Rl49 GRID 3 22K ADJ C39 I I 02UF CR42 0 l _j947 f6 3 CR43 I 12 61 I I I I I Rl36 88 1K 1 I CR44 9451...

Page 93: ...12 sv 12 sv Rt36 88 tK I 50 VF C36 o tuFI 1 8VF 1 03 I 6 1 I I I A6Pt IJ 4 6 C25 L R1 01 J t5K CR45 Rl 4 5 2000 I I 1 0rt t J 50VF 12 sv 50VF I FLOOD GUN GATE 036 50VF I C30 CR34 1200 FLOODGUN SWITCH 0 45 047 INVERTER R110 IOK CR5t R119 IO K I 11111 I 12 6V 1 3 A6Pt NC 13 M OOE INPUT TO Rt38 035 0 6V 0 1V TO CR44 WRITE GATE 10 6V 037 t Rt t5 tOOK 12 6V 50V 12 6V I I 6 ERASE INPUT 1 I f Rl 21 t 1 1...

Page 94: ...l MOOE INPUT I II A6PI I NC 13 12 6V RllO IOK PULSE GENERATOR Q31 Q34 12 sv R103 1200 R104 1 00 C28 33 C26 470 RIH IOOK Rll3 IOOK CR33 Rt0 5 18K t 2 6V RI 06 IOK 50VF 50K C39 I 02UF I 0 l j947l 3 Rt30 J V __ _ _ _ _ _ _ _ _ _ _ O K_ _ _ _ _ _ _ CR 41 12 6Y I 12 sv t Rt43 I RIOS OK STORAGE 3 GATE I r 0 FLOOD GUN GATE 036 WRITE GATE 037 t Rt15 tOOK t2 6V 50VF I CR51 R144 2720 C38 1300 CR46 R146 100K...

Page 95: ...f INTENSITY control setting Deflection Blanking 10 divisions of deflection from undeflected position circuit recovery time 2 µsec to within one spot di ameter Cathode Ray Tube Storage Parameters Remote Erase Initiated by applying logic level 1 high TTL level to erase Tine Remote Minimum Persistence Initiated by grounding remote per sistence line in WRITE mode MODIFICATIONS X Axis and Y Axis Deflec...

Page 96: ...el Connector A special 4 pin connector J4 is mounted on the rear panel assembly Signals for Deflection Blanking Remote Erase and Remote Minimum Persistence functions are applied to this con nector in the following manner J4 Connector Pin Functions Pin Function 1 Erase 2 Ground 3 Minimum Persistence 4 Deflection Blanking TEST PROCEDURE The operating and service manual for the standard instrument Se...

Page 97: ...hat INTENSITY control cannot raise gate out put above 5 V f Reapply 2 V to Z INPUT enable high voltage oscillator Tests for Program Functions Instrument is operational 1 Deflection Blanking a Ground J4 pin 4 Note that spot an be positioned by front panel controls b Apply signal 2 V de 5 V de to pin 4 c Check that front panel controls cannot move trace back on screen d Apply square wave of 0 V to 2...

Page 98: ... changed or added to make these modifications Make appropriate changes to Table 6 2 in the standard in strument manual Figure 2 is a schematic of the circuits added to Program board A4 and figure l is a component locator for the board Amended to include information in this manual supplement the operating and service manual for the standard instrument will apply to this special instrument Encl 1331...

Page 99: ...A4 01331 66534 to 01331 93127 1 A Program board assembly Change MP9 01331 00216 to 01331 93129 l Panel assembly rear Change MP14 01331 02201 to 01331 93027 3 Bezel CRT Change Vl 5083 2591 to 5083 2593 1 CRT selected Add J4 1 J Connector 4 pin Switchcraft 2504 FP Add WlO 01331 93133 l W Coaxial red Add Wll 01331 93134 1 W Coaxial Yell ow Orde1 direct from tp C lorado Splings fivision specifying use...

Page 100: ... fxd metflm 68 l k ohms 1 1 2W Add A1R201 0757 0855 R fxd metflm 68 l k ohms 1 1 2W Modify parts list for standard A2 board as shown Change A2Rl5 to 0757 0460 R fxd metflm 61 9 k ohms 1 l 8W Modify parts list for standard A4 board as shown Add A4C8 0160 3443 1 C fxd cer 0 1 µF 200 wVdc Add A4CR4 thru A4CR7 1901 0040 4 CR Si 30 V max VRM 50 mA Add A4Q8 1854 0071 1 Q Si npn PD 300 mW FT 200 MHz Add ...

Page 101: ...C7 A 5 CB B 4 CR1 A 4 CR2 A 1 CR3 B 3 CR4 B 4 CR5 B 2 CR6 B 2 CR7 B 2 0 03 A 2 04 B 4 05 B 4 07 B 4 08 B 4 R1 A 5 R2 A 5 R3 A 5 R4 A 5 R5 A 4 R6 A 3 R7 A 1 RB A 2 R9 A 3 R10 A 3 Figure 1 R17 R24 R26 R27 R35 R36 R37 R38 R39 51 F Page 7 of 8 HIWUTT ACKAID COM ANY 190Q GAIOfM Of THI GOOS 10 AO COLOUOO SPRINGS OLOUPO U S I ...

Page 102: ... I 0 _ I TO I I 1 _ _Ql____ j I A1R67 6 R13 7150 CJ 470 126V JJ4 PIN 3 I I jI I NC NC IMINIMUM 14 I I lf_E_l S_ _S _Er J C I 14 i STORE r _ __ I I I I P OA8LOWVOLTAGEPOWERSUPPLYBD I PI N 01331 66502 I I I I 5 5UV p 0 A8PI p 0 XAR 50V I I I 2 8 i 5UV 50V 5 12 6V I I 1 R36 r 50 0 50V 50V llJV R14 133K 50V L_ Figure 2 I O V R15 IOK 04 i ERASE CONTROL 01 03 Model 1331A OPTION H72 10v 4 MODE GATE as C4...

Page 103: ...HP Archive This vintage Hewlett Packard document was preserved and distributed by www hparchive com Please visit us on the web Scanned by on line curator Tony Gerbic For FREE Distribution Only ...

Page 104: ...HEWL ETT h PACKARD o 331 90903 PlilN rm IN U S A ...

Search results

Summary of Contents for 1331A

Reviews:

Brands by name

Popular brands

HP 1331A, Operating And Service Manual

Search results

Summary of Contents for 1331A

Reviews:

Brands by name

Popular brands