10780-90006 - 10780A Laser Receiver for 5501A [Prefix 1948] (Mar
Contents
1. 4 1 4 3 Maintenance be tease Sees was SSS A Beeps A ao 4 1 4 6 Adjustments ee ter UNT ins Bo eel E Rane Hen gare oes al o 4 1 4 8 Troubleshooting 4 2 SECTION 5 REPEACEABLE PARTS aaa mee Rs RS SEI 5 1 VETER AI CEA OIA NATI E SOR I ei ROC Se tinere TUR e AI RI Soyo tenes 5 1 5 3 Ordering Information scie sioe u re CE aaa EN 5 1 SECTION 6 MANUAL CHANGES nnmero trie utut ase Tena iw Vete eve S lene eren 6 1 651 Introduction Hor e Roe ene IIR IER TALI EROR RR E Y ade 6 1 6 3 Manual Changes i is zu rosas erronee ia EE EN NE ERE ESI ARI IE IH T ES ea wie en 6 1 6 5 Newer Instruments oie tao s tera n Deis iners wie pine TO TI erede 6 1 6 7 Older Instruments 55 ip HUS ES ve SENE TE nee 6 1 SECTION 7 SCHEMA TIC DIAGRAM A eate enu esee RISAIE uct ee reta be x o erde 7 1 7 1 Introduction usos sauna ters Stan s NS Mom aed ls a sa INR KS ERR SIE SI is 7 1 FIGURES Figure 1 1 10780A Receiver a0 aan ens anne is am ANGUS E CEI Ree an Pu EV a 1 0 Figure 2 1 Basic Measurement System soci ei ne ann ee re er 2 2 Figure 7 1 Schematic Diagram Notes 2 or um am ERI Hia are a mue SE 7 2 Figure 7 2 10780A Doppler Receiver Schematic Diagram2. 7 3 TABLES Table 1 1 107804 Receiver Specifications ur es caes ame er une a Beate Sire eee T EUN VAM 1 2 Table 2 1 Model 10780A Receiver Signal Chart 2 3 Table 5 1 Reference Designations and Abbreviations 5 2 Table 5 2 Replaceable Parts eiie eh aac ee ere RU re ee RUE ORE VI ae x dern s 5 3 Table 5 3 Marufact urers Code EISE dte eee cm es cor tere eiae dio 5 4 Table 6 1 Backdating Changes iecur tome rr emere rasche Reit RIO DRE IRA mR EEE ele n 6 1 iii Model 10780A General Information RECEIVER 10780A TARGET 10780 40003 Figure 1 1 10780A Receiver Model 10780A General Information SECTION 1 GENERAL INFORMATION 1 1 INTRODUCTION 1 2 This manual provides operation procedures installation theory and maintenance information for the 10780A Receiver 1 3 EQUIPMENT DESCRIPTION 1 4 The Model 10780A Receiver is a photodetector preamplifier module which senses the 5501A Laser Head beam returning from an interferometer The resultant radio frequency signal is the MEAS signal for displacement measurement 1 5 Since it is to be installed on the measurement axis of a machine this small electronic module is lightweight rugged and easy to mount It is highly resistive to electric noise and features a NEMA 12 enclosure Designed to dissipate the least heat possible
3. c7 CIO 19 1 0 OlUF ie SS BEAM R2 10K 5V BEAM 5000 BEAM MONITOR un 0 25V TO 1 5V INDICATOR 180 e 5V 5V A 051 RIS 3 8 GREEN 1200 f RS 4TK em 0 1UF V 5V R9 20k BEAM DETECT THRESHOLD 77 REGULATOR ADJ SEE ADJUSTMENT PROCEDURE SECTION 4 FUSED 15 4 45V 1 FUSED y RETURN 5V ix 10V 01 T 22UF UF NOTES gr AIP IER LIMITER DIL CONVERTER N R21 10V 82 5V R25 m O1UF TP3 Da Tos Las Va Q4 0 5V E R24 1100 R26 5V 100 V X LINE DRIVER Y BEAM PRESENT 0 4V ENABLE NO BEAM 5V DISABLE 10780A RECEIVER INTEGRATED CIRCUIT CHART REFERENCE PART NUMBER DESIGNATION HP VENDOR u1 Pin 7 10V Pins 4 8 1826 0037 MC1590G U2 As shown As shown 1826 0122 HA7805 on schematic on schematic As shown As shown 1826 0394 78L10ACH on schematic on schematic As shown As shown 1826 0065 LM311N on schematic on schematic Pin 14 5V Pin 7 1820 0720 DM8830N REFERENCE DESIGNATIONS WITHIN THIS ASSEMBLY ARE ABBREVIATED ADD ASSEMBLY NUMBER TO ABBREVIATION FOR COMPLETE DESCRIPTION 2 UNLESS OTHERWISE INDICATED I RESISTANCE IN OHMS CAPACITANCE IN PICOFARADS 3 RI2 FULLY CLOCKWISE MAXIMUM GAIN X 2 5v 5v EJ CI4 33UF MEAS GIS 33UF 1 HL 2 MEAS m E 2 5V 5V EJ I I I I I 1
4. 3 Connect an oscilloscope to the Beam Monitor test point on the back of the Receiver 4 Place Receiver in the beam path in line from the furthest optical beam splitter where the signal strength should be minimum BEAM SPLITTERS _ 5 Position Receiver for maximum signal indication on oscilloscope Maximum signal should be about 1 volt 6 Adjust R12 overload potentiometer fully ccw then rotate cw until saturation is reached i e point where a further cw adjustment results in very little voltage increase From the saturation point adjust R12 ccw until the voltage at the beam monitor test point decreases by 0 2V Model 10780A Maintenance and Service 7 Reposition the receiver for maximum signal at the beam monitor test point 8 Check that the receiver is not saturated by repeating step 6 and noting if adjustment point is the same Repeat steps 6 ard 7 as necessary to maximize the beam monitor test point voltage at 0 2V short of saturation 9 Place the receiver and optics in the configuration to be used and position the receiver for maximum beam monitor test point voltage NOTE Record the voltage reading at the beam monitor test point for use as an axis reference for future troubleshooting 10 Break the measurement beam and check the beam indicator LED on the 10780A If on adjust R9 threshold adjust until LED just goes out 4 8 TROUBLESHOOTING 4 9 Use the schematic diagram Figure 4 2 f
5. 0160 0576 1901 0179 5082 4958 2N5245 1854 0092 1853 0015 1854 0019 Ca 1 8 10 3002 6 Ca 1 8 10 1002 6 64 1 8 0 2701 Ca 1 8 T0 1002 6 Cael BoT 00470206 C4e1 8eT002401 6 C4e1 80T0 301 6 C4 1 8070 1002 G 82PR20K ETSOX103 C401 8 T004702 G C4 1 B T0 621 6 BeT0 36026 CB81815 C491 89T0 12019G C4 1 89T021802 G C401 8eT0 33010G C4 1 BoT0 82R0 6 4 1 8 0 9 1 6 C4 1 B T0 180196 C4 1 BoT0 1101 6 C4 1 B T0 24106 Cu 1 B T0 101 6 MC15906 7805UC LM78L10ACH 8N72311P D88830N 1078060002 01602049 125103451 1251 5052 1078020004 10780 20005 10780 20006 107809700002 10780 20002 10780 40002 10780240003 034090410 ORDER BY OESCRIPTION 10780 60003 Model 10780A Replaceable Parts Table 5 3 Manufacturers Code List Manufacturer Name Address ZIP Code Any Satisfactory Supplier Allen Bradley Co Milwaukee WI Texas Instruments Inc Semiconductor Cmpnt Div Dallas TX Motorola Semiconductor Products Phoenix AZ Fairchild Semiconductor Division Mountain View CA Corning Glass Works Bradford Bradford PA National Semiconductor Corp Santa Clara CA Hewlett Packard Co Corporate Headquarters Palo Alto CA Mepco Electra Corp San Diego CA Sprague Electric Co North Adams MA Beckman Instruments Inc Helipot Division Fullerton CA 5 4 Model 10780A Manual Changes SECTION 6 MANUAL CHANGES 6 1 INTRODUCTION 6 2 This section of the manual contains informatio
6. used for the purposes of selling the equipment hardware If you advertise that a copy of this documentation is included in the sale you must state that is for Free Meaning if you want to gratuitously toss in a copy of the manual on an eBay sale it s ok with me as long as you state it s for free No you can t sell a digital archive of manuals and say it includes a free copy of this documentation You must give it away with equipment think you get the spirit of the copyright it takes a lot of hours to scan and replicate a manual just want this used in the spirit in which is it given Agilent if you have questions or wish to include this in your archive please email me OPERATING AND SERVICE MANUAL 10780A RECEIVER Part of 5501A Laser Transducer System SERIES 1948A This manual applies directly to Hewlett Packard Model 10780A Receivers with Serial Prefix 1948A SERIES NUMBERS NOT LISTED For Serial Prefixes after 1948A a Manual Change Sheet is included with this manual For Serial Prefixes below 1948A refer to Section 7 Manual Changes Copyright HEWLETT PACKARD COMPANY 1979 5301 STEVENS CREEK BLVD SANTA CLARA CALIF 95050 Printed MARCH 1980 MANUAL PART NO 10780 90006 Microfiche No 10780 90007 Printed in U S A HEWLETT PACKARD CERTIFICATION Hewlett Packard Company certifies that this product met its published specifications at the time of ship ment from the factory Hewlett Pa
7. 7 balance INP input OH oval head binary coded decimal INS insulation OP AMPL operational amplifier board INT internal OPT option beryllium copper kg k logram Osc oscillator beat frequency oscillator kHz kilohertz Ox oxide binder head ko kilohm oz ounce breakdown kV kilovolt ohm 7 bandpass b pound peak used in parts list bandpass filter LC inductance capacitance pulse amplitude modulation brass LED light emitting diode printed circuit backward wave oscillator LF low frequency pulse code modulation calibrate LG long pulse count modulation counterclockwise LH left hand pulse duration modulation ceramic LIM limit p picofarad channel LIN linear taper used in parts list phosphor bronze centimeter lin linear phillips coaxial LK WASH lockwasher positive intrinsic negative volts dc low local oscillator peak inverse voltage volts dc working used in logarithmic taper used peak parts list volts filtered variable frequency oscillator very high frequency volts peak volts peak to peak volts rms voltage standing wave ratio voltage tuned oscillator vacuum tube voltmeter volts switched watt with working inverse voltage wirewound without yttrium iron garnet characteristic impedance single pole single throw single sideband stainless steel steel square standing wave ratio synchronize timed slow blow fuse tantalum temperature compensating ime delay terminal thin f
8. I zi 0780 Figure 7 2 10780A Doppler Receiver Schematic Diagram 7 3 Kip HEWLETT PACKARD MANUAL PART NO 10780 90006 PRINTED IN U S A
9. SCREWDRIVER ADJUST EXCLUSIVE NOR PRINTED CIRCUIT BOARD IDENTIFICATION REVISION LETTER FA HP PART NO 05340 60037 248A 2 2 1 MANUFACTURING DIVISION CODE PRODUCTION CODE SERIES NO May Be Stamped Elsewhere On The Board REFERENCE DESIGNATIONS REFERENCE DESIGNATIONS WITHIN ASSEMBLIES ARE ABBREVI ATED ADD ASSEMBLY NUMBER TO ABBREVIATION FOR COM PLETE DESCRIPTION JACKS ARE THE STATIONARY CONNECTORS AND PLUGS ARE THE MORE MOVEABLE OF TWO CONNECTORS ASSEMBLY ABBREVIATION COMPLETE DESCRIPTION A25 C1 A25C1 A25A1 CR1 A25A1CR1 NO PREFIX J3 J3 Assembly Stk No Assembly Series No Assembly Assembly includes A25A1 used to document Number Name Assembly changes A25 POWER SUPPLY ASSY 05100 6007 sERIES 330 Al RECTIFIER ASSY 05100 6031 J2 mounted on Rectifier Assembly A25 Assembly Numbers indicate Part of A25 gt Pins of J2 NI wen J2 CRI XAI WHT ORN GY aco 193 6 3V J3 not mounted on Assembly A25 2 TO 1 A5PI 6 ol 6 3V lied 5 3V suppli 1 3 from J3 to Pin 6 Transformer E d of P1 on Terminal Assembly A5 Numbers Figure 7 1 Schematic Diagram Notes Y 2 o E lt LU SE Al RECEIVER BOARD ASSEMBLY 10780 60101 SERIES 1644A A2 IMPEDANCE MATCHING 10V gt HIGH GAIN AMPLIFIER PHOTO DIODE ASSY R3 CONTROL 10V c2 STAGE GAIN NOTE 3 OVERLOAD ADJ 230 5V FL 8 20 1 I CI2 OIUF
10. less than 2 7 watts it rests on plastic stand off caps so that convection currents may dissipate even this minimal energy When nylon mounting screws are used the Receiver is electrically isolated from the mounting points 1 6 The photodiode is located on the 10780A Receiver in such a position that the module may be placed above below left or right of the incoming laser beam To aid in aligning the laser beam a light emitting diode which lights when the beam is captured is conveniently located near the photodiode A dc voltage as a function of the incoming laser signal level is also available for assistance in fine tuning the laser beam alignment Initial receiver positioning and coarse beam alignment is achieved with a snap on beam target fixture which is supplied with the 10780A Receiver The target is for beam alignment only Remove this fixture prior to operating the Receiver 1 7 IDENTIFICATION 1 8 This manual is identified on the title page by equipment description and nomenclature part number and revision code manual part number and publication date Refer to information presented in the following paragraphs and ensure that this manual applies to equipment being serviced 1 9 Hewlet Packard instruments have a two section nine digit plus one letter serial number usually attached to the instrument rear panel The four digit prefix first four digits from the left identifies a group of series of instruments manufactured identical t
11. product conforms to Federal Bureau of Radiological Health Regulations 21 CRF 1040 10 Model 10780A Contents SECTION GENERAL INFORMATION cris estre lario ole ee refs Na sigs ets 1 1 Isla Introd ction xii Ste vin oe ae Su REI TRI ARIE ae a SAI e 1 1 1 3 Equipment DescriptiORn c eror ertt lave rer a ne re o er ir gale ea gles E 1 1 SZ O MI ranno 1 1 1 10 Specifications ass se ses ESTERO RE RS Va aE ACER ARRESTI vio 1 1 SECTION 2 INSTALLATION enn RE 2 1 2 1 223 Unpacking and IE ie 2 1 2 4 Storage and ShipMent ic cr as su wanes wate Seas ss ae malte IS tano Maid e 2 1 2 8 installation au ses ser sam se sen am een sass A a RED ea Y DE CRE UA S fel 2 1 2 15 CabllBg cet RITIRI OI e e mss io taste levers ern veta lette tae a 2 2 2 17 Operating Controls sra ai aca eme S Sil sm a Ie Sond Suo poe ue Fel a S Te 2 3 SECTION 3 THEORY OF OPERATION t metn etr eletto leat ore eremo fete eve een oe 3 1 3 1 Introduction omo pas yo oe aaa sms IER ME an M PEN RES TETI RT 3 1 3 3 Circuit Description usse sur emet ER Sem x SES me Vae e YE ner TT RAEE 3 1 SECTION 4 MAINTENANCE AND SERVICE _ nr rh s rr ym EIS nn 4 1 ASD INIFOGUGHOR III A CI o eo Ie ee
12. 100 RESISTOR 10K 2X 125W F TC800 100 RESISTOReTRMR 20k 10 C TOP ADJ 1 TRN NOT ASSIGNED NOT ASSIGNED RESISTOReTRMR 10K 10 C SIDE 4DJ 1eTRN RESISTOR 47K 2X 125W F TCs0 100 RESISTOR 620 2X 125W F TC80 100 NoT ASSIGNED RESISTOR 36K 2x 125W TC 0 100 RESISTOR 180 5 25 FC TC8 400 600 RESISTOR 1 2K 2X 125W F TCuQe 100 RESISTOR 18K 2X 125w F 0 00 RESISTOR 3 3K 2X 125 F TCs0 100 RESISTOR 82 2 125W F TCu0 100 RESISTOR 910 2X 125W F TC 0 100 RESISTOR 2X 125W F 0 6 00 RESISTOR 1 1K 2X 125W F TC80 100 RESISTOR 240 2X 125W TC80 100 RESISTOR 100 2X 125W F TCs0ee100 IC AMPL TO 99 7805 RGLTR T0 220 IC V RGLTR T0039 311 COMPARATOR B DIP P Te DRVR TTL LED DRVR DUAL 4 INP DETECTOR ASSEMBLY REPLACEABLE ONLY AS AN ASSEMBLY CAPACITOR FDTHRU 5000PF 80 20 500V CONNECTOR GePIN CIRCULAR CONNECTOR GePIN CIRCULAR MISCELLANEOUS PARTS CaP FRONT CaP REAR COVER BOTTOM MEAT SINK SPACER SPACER TARGET ALIGNMENT INSULATOR XSTR NYLON SCREW MACH 6932 ieINeLG PANeHDeSLT CABLE 20 METERS 65 FT See introduction to this section for ordering information Indicates factory selected value Model 10780A Replaceable Parts Mfr Part Number 10780 60101 1500 105X0050A2 016024084 0160 0205 016003277 1500336x901082 016023277 1500105x005042 016094084 016092327 016023277 1500226x901582 016003277 016003277 016000137 016000137
13. 22 1826 0394 1826 0065 1820 0720 10780 60002 0160 2049 1251 3451 1251 3452 10780 20004 10780 20005 10780 20006 10780200002 10780 20002 10780 40002 10780240003 0340 0410 2360 0369 10780 60003 EE000 090900 on oorow Leno DEMAS woaoe Table 5 2 Replaceable Parts n Mfr Description Code DOPPLER RECEIVER BOARD ASSEMBLY SERIES 16444 CAPACITOR FXD 1UF 20 SOVDC TA CAPACITOR FXD 1UF 20 SOVDC CER CAPACITOR FXD 10PF 5 SOOVOC MICA CAPACITOR FXD O1UF 20 SOVDC CER CAPACITOR FXD 33UF 10 10VDC TA CAPACITOR FXD OLUF 20 SOVDC CER CAPACITOR FXD 1UF e20 SOVOC TA CAPACITOR FXD 1UF 20 SOVDC CER CAPACITOR FXD 1000PF ee20X 100VDC CER CAPACITOR FXD OLUF 20 SOVDC CER CAPACITOR FXD 22UF 10 15vOC TA CAPACITOR FXD OLUF 20 SOVDC CER CAPACITOR FXD O1UF ee20X SOVOC CER CAPACITOR FXD 33UP e20X 25VDC CER CAPACITOR FXD 33UF 20 25V0C CER CAPACITOR FXD 0 1 UF 20 50 VDC CER DIODE SWITCHING 15V SOMA 750P3 DO 7 LEDeVISIBLE LUMeINT512MCD IFsSOMAeMAX TRANSISTOR JeFET NeCHAN DeMODE SI TRANSISTOR NPN SI PDs200MW FTS600MHZ TRANSISTOR PNP 31 PDs200MW FTsSOOMHZ TRANSISTOR NPN SI TO 18 PDS360MW RESISTOR 30K 2X 125W F TC 0 100 RESISTOR 10K 2X 125W TC 0 100 RESISTOR 2 7K 2 125 F TC 0 100 RESISTOR 10K 2X 125W F TCs0e 100 RESISTOR 47K 2X 125W F TCs0 e100 RESISTOR 2 4K 2X 125W 0 100 RESISTOR 300 2X 125 F TCs0e
14. 394 to 1820 0429 and Mfg No from 78L10 ACH to LM309H CHANGE 4 Page 5 3 Table 5 2 Replaceable Parts Change R14 from 620 OHM HP Part No 0575 0919 to read R14 0757 9021 1 R FXD MET FLM 750 OHM 2 1 5W 28480 0757 0921 Delete W1 HP Part No 8155 0005 Add R15 1 0757 0921 R MET FLM 750 OHM 2 VgW 28480 0757 0921 Page 7 3 Figure 7 2 Schematic Diagram Change the value of R14 from 620 to 750 Delete W1 and replace with R15 750 OHM R15 connects from U1 6 to 10V Model 10780A Schematic Diagrams SECTION 7 SCHEMATIC DIAGRAM 7 1 INTRODUCTION 7 2 This section of the manual contains a schematic diagram of the 10780A Receiver circuit board assembly and additional supportive information as listed below Schematic diagram notes Figure 7 1 which describes symbols and reference designations of components and assemblies used in the Receiver Component locator and an integrated circuit chart for the 10780A Receiver board 7 3 Use the information in this section in conjunction with the information provided in Section IV for maintenance and servicing 7 1 Model 10780A Schematic Diagrams SYMBOLS MAIN SIGNAL PATH FRONT PANEL FEEDBACK PATH REAR PANEL TEST POINT INTERIOR AND PC BOARDS SAND GATE WIPER MOVES TOWARD WHEN CONTROL IS ROTATED CLOCKWISE OR GATE POWER LINE GROUND CIRCUIT COMMON GROUND INVERTER FLOATING GROUND NAND GATE CHASSIS GROUND NOR GATE KNOB CONTROL
15. Advanced Test Equipment Rentals A ished 1981 www atecorp com 800 404 ATEC 2832 Note Title amp Document Type 10780 Laser Receiver for 5501A Manual Part Number 10780 90006 Serial Prefixes 1948A Revision Date March 1980 HP References in this Manual This manual may contain references to HP or Hewlett Packard Please note that Hewlett Packard s former test and measurement semiconductor products and chemical analysis businesses are now part of Agilent Technologies Changes to this Manual No changes have been made to this manual All pages are scanned at 300 DPI or greater About this Manual This manual is reproduced from scans of an original document and images OCR d with Adobe Acrobat OCR errors may exist and as such the user of this document should take care and use common sense when referencing this documentation Copyright Notice This documentation is Copyright 1980 Hewlett Packard and Copyright 2006 Jack Hudler hpdocs hudler org Permission to use and redistribute this documentation for non commercial and internal corporate purposes is hereby granted free of charge Any redistribution of this documentation or its derivates must include this copyright notice You may not sell this documentation or its derivations without written consent You may modify this documentation as necessary but you may not sell derivative works based on it You may include this documentation with the equipment hardware on which it is
16. ckard further certifies that its calibration measurements are traceable to the United States National Bureau of Standards to the extent allowed by the Bureau s calibration facility and to the calibration facilities of other International Standards Organization members WARRANTY This Hewlett Packard system product is warranted against defects in materials and workmanship for a period of 90 days from date of installation During the warranty period HP will at its option either repair or replace products which prove to be defective Warranty service of this product will be performed at Buyer s facility at no charge within HP service travel areas Outside HP service travel areas warranty service will be performed at Buyer s facility only upon HP s prior agreement and Buyer shall pay HP s round trip travel expenses In all other cases products must be returned to a service facility designated by HP For products returned to HP for warranty service Buyer shall prepay shipping charges to HP and HP shall pay shipping charges to return the product to Buyer However Buyer shall pay all shipping charges duties and taxes for products returned to HP from another country HP warrants that its software and firmware designated by HP for use with an instrument will execute its programming instructions when properly installed on that instrument HP does not warrant that the opera tion of the instrument or software or firmware will be uninterrupted or err
17. easurement beam from the Transducer Optical devices and converts this beam into square wave MEAS measurement signals These signals are applied to an accessory unit and compared with REF reference signals derived from the 5501A Laser Head to establish a displacement measurement value In addition the Receiver contains an LED lamp which indicates adequate beam reception and circuits that provide a monitoring voltage which indicates relative intensity of the received beam 3 5 The 5501A Laser Head or an external power supply source provides a 15 Vdc input to pin 4 of the Receiver connector This input is applied to Regulators U2 and U3 which produce nominal 5 Vdc and 10 Vdc operating voltages for the receiver 3 6 The received beam illuminates a polarizing plate which is oriented to pass only 45 degree components fo the f1 REF and f2 Af MEAS signals CR1 mixes these two beam components and the resulting amplitude modulated light generates an ac current at the difference frequency i e f1 f2 Af 3 7 The CR2 difference frequency current is applied to R1 generating an ac voltage at the gate of Q1 A high to low impedance circuit consisting of FET Q source follower and emmitter follower Q2 matches CR2 to high gain amplifier U1 Overload adjust potentiometer R12 is used to prevent overloading the high gain amplifier when the receiver is used in single axis systems 3 8 The symptom of overloading is a decrease in the dc vol
18. econd DEPC deposited carbon MIN minimum PT point DET detector mn minute time PTM pulse time modulation diam diameter minute plane angle PWM 7 pulse width modulation DIA diameter used in parts list MINAT miniature PWV peak working voltage DIFF AMPL differential amplifier mm millimetre RC resistance capacitance div division MOD modulator RECT rectifier NOTE DPDT double pole doubie throw MOM momentary REF reference DR drive MOS metal oxide semiconductor REG regulated All abbreviations in the parts list will DSB double sideband ms millisecond REPL replaceable be in upper case DTL diode transistor logic mounting RF radio frequency DVM digital voltmeter meter indicating device RFI radio frequency interference ECL emitter coupled logic millivolt RH round head right hand EMF electromotive force millivolt ac RLC resistance inductance capacitance EDP electronic data processing millivolt dc RMO rack mount only ELECT electrolytic mill volt peak rms root mean square to RND ENCAP encapsulated millivolt peak to peak ERRAR p MULTIPLIERS EXT external millivolt rms ROM rack and panel farad milliwatt R amp P field effect transistor multiplex RWV reverse working voltage Abbreviation Prefix Multiple Scattering parameter wr 1012 flip flop mylar flat head microampere second time fillister head microfarad second plane angle giga 109 frequency modulation microhenry slow blow fuse used in parts
19. ects the receiver to the Laser System electronics Page 2 1 Add the following paragraph 2 9 In addition an interconnecting cable is required to connect the receiver to the Laser System electronics This cable is specified when ordering the Laser System Page 1 2 Table 1 1 In the Maximum Cable Length specification replace 10780 60003 with C05 59995A This was the special order available with the 10780A 6 1 Model 10780A Manual Changes Page 5 3 Table 5 2 Replacement Parts Delete the 10780 60003 cable and the listing CHANGE 2 Page 5 3 Table 5 2 Replaceable Parts Delete A1C16 and listing Page 7 3 Figure 7 2 Schematic Diagram On component delete C16 On schematic delete C16 01 Add jumper W1 between the 10 volt line and U1 pin 6 Add jumper W2 between ground and U3 pin 3 CHANGE 3 Page 5 3 Table 5 2 Replaceable Parts Add R10 0757 0919 1 R FXD FLM 620 OHM 2 SW 28480 0757 0919 Add R11 0757 0912 1 R FLM 330 OHM 2 1 s5W 28480 0757 0912 Change the value of R17 from 180 OHM 14W to 130 OHM Yew Change HP Part Number of U3 from 1826 0384 to 1820 0429 and Mfg Number to LM309H Delete W2 Page 7 3 Figure 7 2 Schematic Diagram Delete W2 jumper wire from U3 3 to ground Add R10 620 OHM and R11 330 OHM from U3 2 3 to ground as shown below FROM J1 4 U2 1 10V Change value of R17 from 180 OHM to 130 OHM On Integrated Circuit Chart change U3 HP Part No from 1826 0
20. er U5 U5 then responds to the TTL squarewave input signal from Q4 by providing a complementary squarewave output that comprises the transducer system MEAS and MEAS signals 3 1 Model 10780A Maintenance and Service SECTION 4 MAINTENANCE AND SERVICE 4 1 INTRODUCTION 4 2 This section contains maintenance and service information for the 10780A Receiver 4 3 MAINTENANCE 4 4 To prevent problems maintenance should be performed once every 6 months as follows e VISUAL INSPECTION Inspect the unit for indication of mechanical and electrical defects Look for signs of overheating corrosion accumulations of dust oil loose electrical connections or broken parts e REPAIR AND CLEANING Repair any obvious defects and if necessary clean the unit with a brush compressed clean dry air jet or a vacuum cleaner or a suitable liquid solvent 4 5 Periodically you may also wish to verify proper beam alignment For this procedure refer to the Laser Transducer System Operating Manual 4 6 ADJUSTMENTS 4 7 The following procedure sets the 10780A Receiver adjustments Initially the adjustments are made with the receiver located in line from the furthest beam splitter then the system is setup in the desired user configuration and checked 1 Align the system on the machine in the desired configuration using the maximum number of optical beam splitters 2 Remove the Receiver cover to gain access to the adjustment potentiometers
21. hanical part test point battery fuse electrical connector movable integrated circuit microcircuit capacitor filter portion plug electron tube coupler hardware transistor SCR triode thyrister voltage regulator breakdown diode diode diode thyristor circulator resistor cable transmission path wire varactor electrical connector stationary thermistor socket directional coupler portion jack switch crystal unit piezo electric tuned cavity tuned circuit relay T transformer Coil inductor terminal board metre thermocouple on ow wow own ABBREVIATIONS ampere head NE neon alternating current hardware NEG 7 negative accessory high frequency nF nanofarad adjustment mercury NI PL 7 nickel plate analog to digital high N O normally open audio frequency Hewlett Packard NOM nominal automatic frequency control high pass filter NORM normal automatic gain control hour used in parts list NPN negative positive negative aluminum high voltage NPO negative positive zero zero automatic level control hertz temperature coefficient amplitude modulation integrated circuit NRFR not recommended for field amplifier inside diameter replacement utomatic phase control intermediate frequency ns nanosecond assembly impregnated NSR not separately replaceable auxiliary inch nw nanowatt average incandescent OBD order by description american wire gauge include 5 OD outside diameter
22. ilm transistor toggle thread through titanium tolerance on ow now transistor transistor logic television television interference raveling wave tube micro 110 6 used in parts list microfarad used in parts listi ultrahigh frequency unregulated volt voltampere volts ac variable voltage controlled oscillator MA WoW ow non og non wow 7 coefficient LO common LOG composition in parts list phase lock MN n own complete log 7 connector LPF cadmium plate LV cathode ray tube m complementary transistor logic mA continuous wave MAX clockwise MN digital to analog MEG decibel MET FLM logarithm ic phase lock oscillator low pass filter phase modulation low voltage PNP positive negative positive metre distance P O part of milliampere POLY polystyrene maximum PORC porcelain megohm POS positive positions used in meg 106 used in parts list parts list metal film POSN position decibel referred to 1 mW MET OX metal oxide POT potentiometer 7 direct current MF medium frequency microfarad p p peak to peak 7 degree temperature used in parts list PP peak to peak used in parts list interval or difference MFR manufacturer PPM pulse position modulation degree plane angle mg milligram PREAMPL preamplifier degree Celsius centrigrade MHz megahertz PRF pulse repetition frequency 7 degree Fahrenheit mH millihenry PRR pulse repetition rate degree Kelvin mho conductance ps picos
23. list mega 106 front panel micromho silicon controlled rectifier screw kilo 103 selenium deka 10 deci 10 1 frequency microsecond sections santi 10 2 fixed microvolt gram microvolt ac semiconductor germanium microvolt dc superhigh frequency milli 10 3 gigahertz microvolt peak silicon 10 8 silver nano 10 9 pico 10 12 glass microvolt peak to peak slide femto 10 15 ground ed microvolt rms henry microwatt signal to noise ratio hour nanoampere single pole double throw atto 10 18 heterodyne no connection spring split ring hexagonal normally closed How gon non n n n w ow o m om m uu How ow won wow n n u ow Hou on Hon Wo uon noy now on uon now on Wow ow u3r3oagx zod4 WoW ow oH HWOH HR oH Ho H HOH UH n nou ou uw How H Ho WoW on onn Reference Designation 41 C3 Ji cio AQ HP Part Number 10780 60101 0180 0230 0160 4084 0160 0205 0160 3277 0180 0229 0160 3277 0180 0230 0160 4084 0160 2327 0160 3277 0180 0228 0160 3277 0160 3277 0160 0137 0160 0137 0160 0576 19010179 1990 0522 185520081 1854 0092 1853 0015 1854 0019 0757 0959 0757 0948 0757 0934 0757 0948 0757 0964 0757 0933 0757 0911 0757 0948 2100 2030 2100 2522 0757 0964 075720919 0757 0961 0683 1815 0757 0926 0757 0954 0757 0936 0757 0898 0757 0923 0757 0930 0757 0925 0757 0909 0757 0900 1826 0037 1826 01
24. n necessary to update the manual to cover newer instruments and to backdate the manual to cover older instruments 6 3 MANUAL CHANGES 6 4 This manual applies directly to units having serial number prefix 1948A For units with different serial number prefixes refer to the following paragraphs 6 5 NEWER INSTRUMENTS 6 6 New instruments may have higher serial number prefixes that are listed on the title page of this manual The manuals shipped with these units will include a Manual Changes sheet that describes all required manual changes If the updating information is missing contact the local HP Sales and Service Office for information 6 7 OLDER INSTRUMENTS 6 8 Table 6 1 lists the serial numbers and serial number prefixes of units that differ electrically from the units documented in this manual Find the prefix or range of serial numbers that corresponds to your unit and make the manual changes specified in Table 6 1 Table 6 1 Backdating Changes den u Make These Manual Changes or Prefix rer CHANGE 1 For units with serial prefix 1912A and below the 10780 60003 cable was not supplied Instead a 4 pin con nector P N 1251 3452 was supplied to wire an interconnecting cable between the receiver and the Laser System electronics Page 2 1 Paragraph 2 9 Item 3 Delete the sentence and replace with One 1 4 pin connector P N 1251 3452 that may need to be wired to an interconnecting cable which conn
25. nd Service office immediately offices are listed at the back of this manual Retain the shipping carton and padding material for the carrier s inspection The Sales and Service office will arrange for the repair and replacement of your instrument without waiting for the claim against the carrier to be settled 2 5 STORAGE AND SHIPMENT 2 6 To protect the Receiver during storage or shipment good commercial packing methods should be used Reliable commercial packing and shipping companies have the facilities and materials to be adequately repack an instrument NOTE Before returning an instrument to Hewlett Packard contact the nearest Hewlett Packard Sales and Service office for instructions 2 7 Conditions during storage and shipment should normally be limited as follows 1 Maximum altitude 25 000 feet 2 Minimum temperature 40 C 3 Maximum temperature 167 F 75 C 2 8 INSTALLATION 2 9 The 10780A Receiver is shipped with the following items as standard equipment One 1 Alignment Target 10780 40003 One 1 Receiver Module 10780A One 1 Interconnect Cable 10780 60003 Refer to the 5501A System Operating and Service Manual for cabling information Four 4 plastic machine screws 2 required 2 1 Model 10780A Installation and Operation 2 10 One 10780A Receiver package is required for each measurement axis in the Laser Transducer system being installed Figure 2 1 shows the required optic comp
26. o each other The letter indicates the assembly plant location The five digit serial number is different for each instrument If the serial prefix of your instruments differs from that listed on the title page of this manual there are differences between this manual and your instrument 1 10 SPECIFICATIONS 1 11 Table 1 1 lists the characteristics and specifications for the 10780A Receiver Model 10780A General Information Table 1 1 10780A Receiver Specifications INPUT REQUIREMENTS 15 volts 1 at 0 18 amp maximum OUTPUT Measurement Signal Differential square wave at Doppler shifted frequency 100 kHz to 5 0 MHz Levels compatible with all Laser Transducer output accessories Maximum cable length using HP 10780 60003 Cable 65 feet 20 meters ENCLOSURE NEMA Type 12 MAXIMUM POWER DISSIPATION 2 7 watts with 20 meter output cable WEIGHT 4 8 ounces 136 grams 1 2 Model 10780A Installation and Operation SECTION 2 INSTALLATION AND OPERATIO 2 1 INTRODUCTION 2 2 This section contains information for unpacking inspection repacking storage and installation of the 10780A Receiver 2 3 UNPACKING AND INSPECTING 2 4 If the shipping carton is damaged ask that the carrier s agent be present when the instrument is unpacked Inspect the instrument for damage If the instrument is damaged or fails to meet electrical specifications notify the carrier and the ncarest Ilewiei Packard Sales a
27. onents and the alignment of the receiver to these optics required for each measurement axis LASER BEAM INTERFEROMETER RETROREFLECTOR RECEIVER MEASUREMENT SIGNAL TO ELECTRONICS Figure 2 1 Basic Measurement System 2 11 Specific details for the placement of the receiver and its associated optics and installation examples can be found in the Laser Transducer System Operating Manual Also a detailed alignment procedure can be found in the system operating manual 2 12 Briefly each axis of the Laser Transducer System has a receiver with a lens photodiode assembly in the front It must be positioned so that the polarizing vectors of the laser beam are parallel or perpendicular to the line defined by the two mounting holes within 3 as shown in Figure 2 1 2 13 When mounting the receiver the following points are important to remember e At a 45 position the signal will go to zero The receiver dissipates between 2 and 2 7 watts Plastic pads keep an air gap around the receiver and also act as thermal and electrical isolators e The cable to connect to the back connector of the receiver must have ample room to make connection See dimensional drawing Figure 2 28 in the 5501A System Operating and Service Manual CAUTION The receiver housing must be electrically isolated from the equipment that it is to be mounted on Use nylon screws only 2 14 CABLING 2 15 For cable preparation connectors and part numbers
28. or free LIMITATION OF WARRANTY The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by Buyer Buyer supplied software or interfacing unauthorized modification or misuse operation outside of the environmental specifications for the product or improper site preparation or maintenance NO OTHER WARRANTY IS EXPRESSED OR IMPLIED HP SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE EXCLUSIVE REMEDIES THE REMEDIES PROVIDED HEREIN ARE BUYER S SOLE AND EXCLUSIVE REMEDIES HP SHALL NOT BE LIABLE FOR ANY DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES WHETHER BASED ON CONTRACT TORT OR ANY OTHER LEGAL THEORY ASSISTANCE Product maintenance agreements and other customer assistance agreements are available for Hewlett Packard products For any assistance contact your nearest Hewlett Packard Sales and Service Office Addresses are provided at the back of this manual SAFETY PRECAUTIONS CAUTION LASER RADIATION DO NOT STARE INTO BEAM MAXIMUM OUTPUT 1 mw PULSE SPEC continuous wave LASER MEDIUM helium neon CLASS II LASER PRODUCT AVOID EXPOSURE BEAM CAN SHUT OFF BY CLOSING BLACK APERTURE ALIGNMENT APERTURE FOR REDUCED BEAM CAUTION Laser radiation LAE JRE when open and Interlock failed R RaDiAT THIS APERT or defeated DO NOT STARE ION IS EMITTED FROM INTO BEAM This laser
29. or troubleshooting The schematic shows test points voltages and waveforms for the various stages of the receiver 4 2 Model 10780A Replaceable Parts SECTION 5 REPLACEABLE PARTS 5 1 INTRODUCTION 5 2 This section contains a listing of replaceable parts for the 10780A Receiver Table 5 2 a list of manufacturers codes Table 5 3 an explanation of the reference designations and abbreviations used in the replaceable parts list Table 5 1 and information on how to order replaceable parts 5 3 ORDERING INFORMATION 5 4 To obtain replacement parts address your order to your local Hewlett Packard Sales and Service Office listed at the back of this manual Identify parts by their Hewlett Packard part number see Table 5 2 To obtain a part that is not listed or does not show an associated part number provide the following information when ordering e Instrument model number e Instrument serial number Description of the part e Function and location of the part as near as you can determine them An explanation of instrument model numbers and instrument serial numbers can be found in the Laser Head Operating and Service Manual 5 1 Model 10780A Replaceable Parts Table 5 1 Reference Designations and Abbreviations REFERENCE DESIGNATIONS assembly delay line attenuator isolator annunciator signaling device termination audible or visual lamp LED fan motor 7 miscellaneous electrical part miscellaneous mec
30. refer to Appendix C of the 5501A System Operating and Service Manual Model 10780A Installation and Operation 2 16 OPERATING CONTROLS 2 17 There are no operating controls associated with the 10780A Receiver However there are operating characteristics An LED lamp lights to provide visual indication that the Receiver photo detector has received an adequate laser beam If when the laser system is in operation this LED does not light perform the alignment procedure in Section 2 of the Laser Transducer System Operating Manual If this procedure does not solve the problem refer to the Checks and Adjustments section of this manual and the 5501A System Operating and Service Manual for troubleshooting procedures Refer to the Theory of Operation section for more details on operational characteristics ri 2 1 Model 10780A Receiver Signal PI EA 1 3 Fused 15V RET Return path for 15V input Board power Electrical signal correspond ing to reflected Laser beam frequency shift Receiver operating power originating from the 5501A Laser Transducer system or user designated power source I O Board Model 10780A Theory of Operation SECTION 3 THEORY OF OPERATION 3 1 INTRODUCTION 3 2 This section provides a component level discussion of the 10780A Receiver Circuit Operation 3 3 CIRCUIT DESCRIPTION 3 4 The 10780A Receiver intercepts the doppler shifted difference m
31. tage at the beam monitor test point with an increase in incident laser light When overloading occurs adjust R12 ccw until the overload condition is corrected When rotating the control cw the test voltage will begin to increase then top out and then begin to decrease The proper setting for R12 is 0 2V before saturation NOTE R12 is provided primarily as an aid in alignment Overloading does not affect the laser system operation 3 9 U1 provides a square wave output at a nominal amplitude of 2 volts peak to peak This signal is applied to voltage amplifier Q3 The resulting square wave output is applied to TTL Converter Q4 which provides a TTL level square wave input to Line Driver U5 The output from Q3 is also applied to a detector circuit consisting of CR1 and associated filter components The resulting dc output level charges C8 proportionally to the input signal level This dc level provides an external indication of received signal strength i e beam monitoring and comprises one input to Threshold Detector U4 3 10 Threshold adjust potentiometer R9 determines the triggering level of U4 This potentiometer is set so that U4 changes state when the peak to peak signal level at TP1 reaches approximately 15 millivolts The triggered Threshold Detector output goes to ground turning on LED diode indicator DS1 This indicates a minimum beam strength of four microwatts or more has been received The ground level signal also enables Line Driv
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