Home

HP 1615A User's Manual

Contents

1. CO 10 UT Green Biue Violet Gray White Service 8 7 Model 141T Service TRIPLER w12 C4 VI C2 C5 ASSYA3 VI L1 HIDDEN C3 C6 1 C 4 Q 2 TOP J9 CENTER J11E1 T1 12 6V J11 INSERTS 1 B J11 BOTTOM J2 TOP 141T R 1 CENTER Component Location Top View Figure 8 2 8 8 Model 141T Service H PULSE A2 CIRCUIT POWER SUPPLY ASSY R4 R1 ASSY A5 P O HV TRIPLER ASSY A3 Nu NOSNI NE Wa eris 100V A1 DIODE ASSY 141T H 5 Figure 8 3 Component Location Bottom View Service 8 10 R7 A5STA A5S1B E E UA aana A5S1C A5S1E ASSTF pea bs RA O en Wi Si DS1 R9 R10 A5S1D R5 RE JS 7 4 Figure 8 4 Component Location Front View SIA Model 141T 1417 R 8 Service Model 141T A6 HORIZ DRIVER ASSY 7 A POWER MODE A7F1 J10E1 J10 INSERTS n E be v Ki y Component Location Rear View Figure 8 5 6 11 8 12 ets wege Suurim Ae xn y pue y Ade Ixny 778930814 2 3 Lip tv lt Nid 30119 Hf SJANIINI TIM IBAON SE am AE XVOD 6 i 226 tv ev z owe ET I3 I 2 ki XVOD 2 NA 3 sv Nid 30119 KAVNS31Ni 43NYd Hu 38 a xnv j ev Nid 30 9 Y EA Sg V tv ev iv Nid 30119 2YNU1LNI E EAS 13NVd YVAN f
2. URAMI DING SOUSI d HGWG MAJ ai 998 290 18 gt sags dz 96 96 nS ARON Bugs 0308 SSII Ms PANJE L HAMA 6S2 260 mt 9 09 S 1190 ilai PARA 122860 u68H MIC G 95S83S OPUS Inge MANAG SAJISHI DEI tin Di aa Dale aen o el 9956 BL 521 436 0rabueg DEAH EEDEN gene 255 Mg g9 sms ang ESTA TN 9 29 RE 520 BiH HERO Mau Jebeujeste Pa npuen gugeuew pf PISKA ARIS ang DEI deg nig BYERING me 5934 opt 1030 82 RL 106 001 ina CO 905 106 Od iang Sith S omg HV1S308 ae 262 KBL 29 983 LOG BOS seur SMO MT RUS WISI Kee 7 RIS MB 30981S084 sme 680 gei _ GRBI SP RL 20 d r Awquoq WP ATA DINARS WA Zeit mu n m 2 u 020 bor oj Pu ei pauswer SOuipatg unisex ius anja YONI Suoy u0H 09101WH2S 420839 Peay Basung 1001 UGC RAMO whyeusay 262 08 Od prt Buoy Bue 05 9 ane HOW SNOH 3509 CINE 12923 SE 3696 SREB teg D D 4 Sup 2523 At EWA weng hp siog PANOR eno m m w nmvadisnv Visv wolu4v P UNGA ZED ES Z mat SINGH yYSNOYdA3H 3 092 3 sc loeo 391 9007 0 Z 93Se1su8puay funquiey 01268 SAI HRUG POPE g een PAPE po et HORARIO MO g 291829 1 ASIKAE WHODRSSAQ 01298 SRA L HRUD PANDEO tH MOG VIAL oto Ny 43H 309
3. 63 eudes 2112 20 aja QOb PbQ vam Osiavef ap DY WZVH6 003 sa BLOW SANNE 383 pi YNDYHYDIN 829C0 PR si mobog SIHYV 21423 WOVE MBH qed dying 21403 4 i a D D Kita D YA un ODRA V 5 Popa asp Seu SE piej 022 ON ag 90 Zi ei 34 Toson dad 06 08 45 pi 12926 d 1 SAA EA OL seen er n openedy nydd LE Kanerion 9590 A7 i E 1828 991 GDELNCY Sf Duteuvp ap OIH 00002 d 280 ei 30130 Ug dH HALY v2 TRAM 26629 sodjnb A stop dy ON Z 69182 NS EUEG JEGO EE YE DU PUES EISEN AY 30v 96908 kat PIONZALEA ap DIEN JB MIH 2429 5 6309 4 RL 3 ka e Ce ya s S Jay 9 NEJA ULI wo uUsH pre Sodige E onbis Eh Opry HRA Y x que e L ka f YTANZENIA uomunsy PCIA PIESTA HAMAIN Io site Uptoesw nasty 00 231 YIAFTOG M uwa est aia 28 90 i049 3091 app HOLSV o2 VINOS EE OUY MOVAMJH sejne PET m ei z 30808 Od evzpcss 1606 mi POG Z2S 980 425 BL oBenueg GONIH adeg abaly GUQd MOVAMJH HAO 6 ON 41009 Baha xat meer Dees d HUMOR oepivajuoje fau ap sm 40 i 02 OHNE DELE Serie sai 2 90 GGQ 02 99 G2 bt LbEO SE 2890 6 3cp0 5 Ri Kaupks QUYAMH DLE 031109 AP use sodinba ser jedy upisinig S282 X08 Od obenues SH 2JB8y 01404 00006 Say gouen 19 Z RPL 80 SEN EpFLRAY so osig ti EZ PT Ev S9001 SEZ ON SEUOZEUI olj Ay 0166 use gig ees repue ta Eu DHEALT 9959 8vV Ri smujsnpur a WOJ sodnug sojeredy UMSA NO 3p WS E
4. Q transistor v vacuum tube neon b an i i a resistor VR bulb photoceli etc y Jac RT th voltage regulator c capacitor K relay ermistor diode CP coupling L inductor s Switch w cabie CR diode LS speaker T transformer x socket DL delay line M meter TB terminal board Y crystal DS device signaling lamp MP mechanical part TP test point z network ABBREVIATIONS A arnpere s FET field effect n nano ag rfi radio frequency ampl ampiHier s transistor s ne normally closed interference assy assembly no normally open rrns root mean square ampltd amplitude 9 npn negative positive rwy reverse working G giga 10 negative voltage bd boardis gnd ground ed ns nanosecond bp bandpass A A SCR Silicon controlled I 2 nry p pico 10 rectifier Ti al HP EA Pe printed etched sec second s e circuit s std standard ccw counterclockwise Hz hertz k k coax coaxial p dace ti trrnr trimmer coef coefficient if intermediate freq POP a Nr NET com common intl internal p o apa of u micro 10 CRT cathoderay tube 3 p p i adt eak usac microsecond cw clockwise k kilo 10 prgm z ogre M prv v votts d deci 10 1 ib poundis pra r S var variable dB decibel lof low pass filter s pona 4 ps picosecond w with ext external m milli pwv w o without A mega
5. Fg aay Wee L EOZE 0292 099 01 XML i 92821 XOR Ud 9 URUSIOHUET GEGE Samoy Sap Oe ESCH 000 592 S12 el ZAPOA PS XML QE80 69 016 KAAL Gei gen 205 ei 0201 048 12 18 MANDES 41 pis Sri ege Gi wt 65691 4895 est Ri 81207 elifASino EIERE XML 16926 uopioga NAI DANDO SUP NOLONIHSYM wed NN a ei rts bi ci oenogi g grogo subiom All Bel 10g Sung 0062658 iso t any adioujebueig 1583 rl ica fan m e 4910 986 RS p 4 ORUJAV iig 1201 d PER 4383 9995 KOM UODI KA BPL Q posuny kose dq VINHOdFIVO SZA 108 U PI BZZE uburumii LIES XML REA 0006 tov ore di ul 49 ORO 01861 xoB Qd kosi ei Brid peoy sbuudg Ar unu PLSZ L9p0 282 HOIN 28pi Jetgeuaong 2 WA ARM E 901 9061 mi SOCZI x20u GTI SE ajejsod POR 9986 409 Od 9090 282 ip Ri ONIH MEUI ES SE BAY Opodo t 2314195 CDA Vote Abeig jRooBeLINOH ap semeni E 9608 UBanganid mE 396 292 ih PI SALE 9095 X08 O d EEN EE SAL BRAZ Di i AI JESS Lud 660 S56 055 XML Aug Sang 189 payl k BONA da rpm MINYA TA SHINE 10921 deng nol Beie Ai SYSNYX 0202 1842 606 eL SYSNY WHY 96424 KARE 18182 9313 18505 ON QSEE O28 IEOS NOL 3nuaAv BROS ioz si uoe 196 90E EBLE ub QG E Siepiapnaj 34 ri v52 209 pi MVISRH ADXOYGRAK ZREJO 84471 Od 29026 unani isha 9946 96 Big Jal BAJE Hd PUEDIEO M 5087 Zeg VORINI 0628 BI UD PIPA 2 OOED 126 8453 BL Id dtS SISSIN 26 AHD SMO DEZ x09 Qd Py ud 12 PrulejeH 1260 48 VINIH decy Anej 2045
6. 4 STRIPE Pd CATHODE END CATHODE CONICAL Service BI POLAR TRANSISTORS BLACK EPOXY PLASTIC TRANSISTORS H EBC METAL CASE TRANSISTORS Cg t C gt SHIELD DUAL 82 S k pd C B 7000 B 19 Figure 8 1 Semiconductor Terminal Identification 8 36 OVERALL TROUBLESHOOTING 8 37 The most important prerequisite for successful troubleshooting is understanding how the instrument is designed to operate and correct use of front panel controls Improper control settings or circuit con nections can cause apparent malfunctions Read Sec tion III operating procedures for an explanation of controls and connectors and general operating considerations Read Section IV principles of opera tion for explanations of circuit theory 8 38 Troubleshooting is much easier if more than one symptom of a trouble is evident Observe the instrument and note all indications of faulty opera tion If symptoms indicate more than one trouble treat each problem individually and locate one trouble at a time Don t waste time making random checks Instead follow the logical procedure presented here and refer to other areas of information in this manual as necessary 8 39 FRONT PANEL CONTROLS 8 40 Equipment troubles are frequently caused simply by improper front panel control settings Refer to the operating procedures in Section III for a com plete explanation of each contro
7. MC AOZ SADA AIG SA OZ A AIQ AS ul cin NIW 3NIL LINE 34018 300W NOD NiW WILL 3SVU3 3GO0N 34015 JGON a A AIG SW OS 39 MO SW 002 AlA 2ZSA OZ BO W2 AIG AZ TAT AIGZA OG gt 0075 AIQ AZ SANDIA 3svu3 300W j A x o seni RIL 3Sv33 300N A A WODE eaves G1S AGOQW A ad tupa EHYSE Ai G PAN ZA 7 90 NSE E AD ld 23Sh 02 i AIQ Sh 027 05 MA A2 NIA Agen 02 MO AZ Sa AIG A Z i jn NIW BRL LIWE YA NA 3 SAME 5 A S amp Se 34015 Y 018 300 I wm Ge TA 34018 9 O1 300N 6 401 1 Ao X 21D it AZG Ap 6 n i i JUDUINJJSUL YALI 10 JUELS G i quounsn pe ey UM JEYMIWOS vapup 055 HTT AxeA KVU pue KJUO 92U9J9 94 JOJ SISKGSU G6 G ATE popuojui ev SULI0JOAEM BSUIMO UR MIASA reneged oj 34 ur UMOYS SJAAL IBEIJOA THE 646j2 zur ro wa ALON Hex 1 E i 100 Aing glag cus pues s cos sozjuoo AIISNSLLNIPU HONHILSISUHA KJI e 55 vamseq qo paauexejox ors SWIPE HV ois PE SMa LY punoz8 sIsseyo 01 poouez9 oj pue Hone UOS UGE SERIO JANEM YIL peyeorpur SE EE 0 tt eisr uceT y pou IS 841 ut peunseeui ome weasel oni 5 rpe agxeabpwe oumdeows oq pue MIO SMRK 2 KOM uos oq uo UMOUS sjueurexdseour 800 58 e el AGE 009 RAASNALNI PU HONALSISHHA 99m PS i NLNSIASDIOSVSUN NYOJHAVMYUOBSNOBKINOO LO Ye AJA AJA SA a RL a ode waw W i x 442 4 NES L IE REGA z E S d f
8. S0627 UJLJKI AGED q Greg 70 AAA Pedy ON 2525y m pi SUG epa TMS SHUDA 961 SEBEQI HILIKI SE EIGIN 1131 i ZLE PETERA ugpeqa es WE 358014 Von Peog DAO 022 89N MI suoneitiauiinsut 5316G1129 3 S LGE upaung WANA op 43988 561 uipeung CEZ x0g Od 13949 Bum 16825 EGE pm Z N mais ESP el UKIMPA INIG enc 610 258 BL unus peo 99 BEZ BOE bg Dad DI Z SPIDS poney MO WAPENI KA BUY UG UNMJAM vi N30 2029 RERE map 58 058 ml UOYOUMISAN S AL 493 444 661 X08 Qd BYE TN STY B ER puepony Tv ENG 31923 dran PSC OB 68244 JAL puepiony bi i KOG Od winny DY 3105 uoi 67 Vossii 20906 Pit ZN sepas opas T ANO JEDI PRAP ONA JEV DUT YAYA GEET 6186 ZM mat 199 596 jaj SUCIA 26049 xo Heads eSUE yta 192 BOJ EUR PHULE ui N 0228364 Ra BOHRA AJVdAA3H AIFF GEBE ZN XHA 684 418 191 OLVIDA ABULRCY Erbg X98 d DEI CZ NH Dance Digg sapiy Bi bordea TAS YULU EL P Jaki CZ DEE Ain ONYYVIZ MIN ad GEGEL Kegl sau 01 99 92 Ger 11191 St Papsw 3 DH Zesr V S epuedsa ii RIVES 01 0 291 SSHBELIEZ HOSE AE yeeseyang Dt 9348 GH 39140 21093 PANAMA YEE voie ORINVOHJLNI HIRED 42 ES 61 B d HOBO SP epus queso Dune 8652 at Y0QSFY 133331 21929 Z 09 89 6 194 1 uonerg LESZ KOG Qd
9. x 1 i 3001 i H Zn ul Nid 1O0H1NOS gt 3ON3LSISHJd NI ON Td 166 1282 i a obs 249 22 N Al 21 0 y 7 TT AGSZ jm E B 3A9 21 i 600 40 G8VOB 3SVH3 J1OW3Y Oi st i e e m O Z l i ej UN issus es Ls ois 018 315 BIS VIS 2813 3510 sv re sss GV 3102317 es nq uoryeognuop Jus od uo T 210 314 iva ios amp 23 ZUA v2 psu va ISA 2 Eau vo gtd Ta 61H GO 9H TO O G Sigo ED S 3 dis PO ZSki pro ved SO 81H VA SQ 90 red 8199 GG CHO G3 318 2 194 TI H va ti ed pud SG SD LEYS L3 va GtS 094 Po Zg SO 91H EO ey GQ tO TO SLHD SO eLO a O S Svu ZO EH j SG sta LA d va o GQ Stuo SO ELO a dis 90 TA O H 1 5 Ovi L3 Lu SQ 20 ZG vLHO 90 a VIS 59 ivs ed 62H LO LO va ID ca ELHD ea OLD 1 3 vou Ga oye os BIH LO VviH 9 8 SHOT SO it ca ZLBO ye 69 HI cou va vrti ZA Lit TO EL 2 SLO t3 ZD 89 9 2 9H PO LO DCH iH vio o 9749 SO OLUO se LI 93 Dou va ca SCH va Li eg elo ca SCH r 6849 Z2 92 CO esu 6 Obu V2 tzu 80iH Sa Z O VLAD c2 849 va SO CO ese v8 6 H 92 ECH as vOlu SI LID ECHO ZO do SG YI GQ Sd vo SECH ZCH 0 SH SO OLO oud 949 ra
10. 01 Vasut ep Chupoy gen 5 5023149913 soyu uuedint3 ap POMOGLE EA Een AYDALHOd id esay ES v 18 ond 49 0 AMIS Afr Dag HE MIH T3N29I8H231 RS DANE GNF td STEK 1299 002 09 CG EG 20 et Ing SPELA bi Kog i USloASaN SA 95308 Pitnotd palma a AVIADOR pedau 812 Aa NEP ENSKA NBG Td GED 40 Gz de 020 Ri FEI MOAR SIN 99 X08 Lt gertueapagg BANAH UBA AN Mielag DIPOE MH SGNY d43H13N bov Z semi Sjessrog NIBOTVA AGE OF 22 229 20 ak 3706605 0 Kaa Way 4 18A 05 np 3MUAAY ANYS xnfaU89 DIZNITA RAMAH SENAMAXNI N093N aeg OW UOSAN 0Z 9 mt FUL22 16072 gi s nb iuw SJUSJNOJ e1sad apt Sau ANGIAMYZOR Saul SISSbELE 38 sobuejes sier bi Ei 1015998 v9igi Boa Z BUG VES pw KU VISAVIVVE BURG UVFONNOGLJIT UAF 8814112 giel BILE 69 9 wl mueg Ty 324 08 4 PE 12945 Rhaoueurp SPIDEY 3 Unutisuo ROMER MES DIVE LAY SIE BECOZA ii 48269 EL GB yi jot 16069 mb dy Gualas 04 0013 ug fing Gundy ae COLI X08 Odd 2310 Kut woe upesi UPON VLO Q0neN HALF 1022110222 1901 9690966 ai MOIEN uo GOUEN 2106 g Qd pm Y JJOIPEJBY iPuOqeulaiu 0 ODA NOLOBd SKY Z929S6 9211SS B IGOR LL 108 Bd KEE Suuaeurbu3 EVY YANI RECH m SEN brary 30100274 Ou2 l Sv Carr Dommg oneuj Prt piesaed HnejMeii 2 e 000 BibL Se 2600 BL nigt
11. 5 1 5 8 Preliminary Setup 5 1 5 9 Beam Finder 5 2 56 11 Focus and Astig 5 2 5 13 Trace Alii 52 5 14 Calibrator i bes e EOS 92 5 15 Variable Persistence 52 5 16 Writing Speed Fast 5 2 E 5 17 Store Time Fast 93 3 5 18 Writing Speed Standard B 5 19 Store Time Standard 5 3 521 Adjustments Br i 5 24 Preliminary Setup 53 5 20 Low Voltage Power Suppiy E E Adjustment 58 5 26 High Voltage Power Supply Adjustment 5 3 5 27 Intensity Limit Adjust 5 4 5 28 Geometry 5 5 5 29 Calibrator Adjustment 5 5 5 30 Pulse Circuit Adjustments 5 5 REPLACEABLE PARTS 6 1 6 1 Introduction 6 1 6 3 Ordering Information 6 1 Table of Contents MANUAL CHANGES AND SCHEMATICS AND TROUBLE OPTIONS c us See ji AAA a 7 1 Introduction u A 7 3 Manual Changes 1 7 5 Special Options pore 7 9 Standard Options 79 SHOOTING a da DE E 8 1 Introduction 8 1 8 3 Schematics CCDA 8 1 8 8 Reference Designations 8 1 8 12 Component Locations 81 8 14 Preventive Maintenance
12. OPERATING AND SERVICE MANUAL MODEL 141T DISPLAY SECTION Including Option 009 SERIAL NUMBERS This manual applies directly to instruments with serial numbers prefixed 1615A With changes described in Section VII this manual also applies to instruments with serial numbers pre fixed 950 through 1502A For additional information about serial numbers see INSTRUMENT AND MANUAL IDENTIFICATION in Section I HEWLETT PACKARO COMPANY COLORADO SPRINGS DIVISION 1900 GARDEN OF THE GODS ROAD COLORADO SPRINGS COLORADO U S A Manual Part Number 00141 90914 Microfiche Part Number 00141 90814 PRINTED JUNE 1976 SAFETY SUMMARY The following general safety precautions must be observed during ali phases of operation service and repair of this instrument Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design manufacture and intended use of the instrument Hewlett Packard Company assumes no liability for the customer s failure to comply with these requirements GROUND THE INSTRUMENT To minimize shock hazard the instrument chassis and cabinet must be connected to an electrical ground The instrument is equipped with a three conductor ac power cable The power cable must either be plugged into an approved three contact electrical outlet or used with a three contact to two contact adapter with the grounding wire green firmly connected to an
13. UL 4 U OD Nego u u ed 2 HA SHA PHA EHA CHA LHA YA EA ZA LA LL 98H S8H v84 8H 1 gt I L IL 5960 Z8H LSH ogu BL bi BLY tli 924 SLUH biti ECH 74 ody 9H po va 9 H CH ZH YA gO Sd 83 ya si Si gi cV A ddng tomoq uorjeogrquapt jueuoduio 8 8 Jinsi 998 SEI youd 9H c9H 194 094 GSH Su Gu 98H SSH vsu ead LG lt i DS 6vu Bevt viyy SPH SPLA Pry Evu iva otu GEH BEH 9 H SEH va 9 A Done zou eue eh cada i Nee M H ke 17 PIS ar TTE Sly Sli viu EL SIE 2ttH SLLH j vibi ory 64 Lu i gu or er ZA EN E A PI 2 ECO LA SA v2 9 3 YA PS SO vo co zo LO DAN Sd Td EdW dit L di 21 it iska LIED D i st 4 7 4040 MM mm mam u BOA OO tu uu u vi vr i gt va 4 Z4 Ld SCH LZH 9zu2 SZ O vZuo Zu2 ESO IZHO Gi HO 8LH2 9 09 0 0 UN ID Y PSSE pci Dee mir 9097 99 OGOLYNJAJ SLYO SiHO LEHO WIR 830 SHI PHO H2 ZUJ ozo 612 BLO e 0 GD toy yy ey lt A OD Ou ww Oo yo x 919 Sto vio 12 Zio tto 0 69 82 LI 93 So
14. b Monitor 100 Vde supply with digital volt meter using voltage divider probe Note exact reading 5 3 u Adjustments Table 5 SUPPLY ADJUST A2R11B A2R11C A2R11A A2R47A c Multiply value obtained in step b by 23 50 d While monitoring high voltage 2350V MON ITOR POINT 4 set HV adj A2R63 to obtain a voltage reading equal to result obtained in step c 2350 125V e This procedure will set high voltage within 1 provided 100V supply is set to indicate exactly 100V on digital voltmeter 5 27 iNTENSITY LIMIT ADJUST NOTE Method A must be used for Model 141T s with 1400 Series vertical and time base plug ins Method B must be used for Model 141T s with spectrum analyzer plug ins Method A a Turn power off b Remove 1400 Series plug ins c Short pins 1 and 2 of upper compartment connector J2 together WARNING Voltages present in the high voltage supply are dangerous d Turn power ON e Set intensity limit A2R65 fully ecw f Set INTENSITY to 11 o clock position g Press STD pushbutton h Slowly adjust A2R65 cw until a spot is just visible i Turn INTENSITY fully cew en p Model 141T 2 Low Voltage Power Supply Adjustment MEASURE POINT WIRE COLOR WHITE RED VIOLET RED WHITE VIOLET j Turn power off k Remove short from upper compartment con nector J2 L Replace plug ins Method B a Turn power off b Install spectrum analyzer plug ins c Se
15. in the common shapes and sizes of semiconductor devices When removing a semiconductor use long nosed pliers as a heat sink between the device and the soldering iron When replacing a semiconductor en sure sufficient lead length to dissipate the soldering a heat by using the same length of exposed lead as was used for the original part 8 33 SERVICING CIRCUIT BOARDS 8 34 This instrument uses circuit boards with plated through component ho es This allows com ponents to be removed or replaced by unsoldering or soldering from either side of the board When re moving large components such as potentiometers rotate the soldering iron tip from lead to lead while applying pressure to the part to lift it from the board HP Service Note M 20E contains additional informa tion on the repair of circuit boards Important con siderations are as follows a Do not apply excessive heat b Apply heat to component leads and remove component with straight pull away from board c Do not force replacement leads into holes 8 35 If the metal conductor lifts from the board it can be cemented back with a quick drying acetate base cement having good insulating properties If pi the metal conductor is broken solder a wire to the conductor to bridge the break Model 141 FIELD EFFECT TRANSISTORS BLACK EPOXY PLASTIC METAL CASE METAL CASE DIODES DIODE SYMBOL ANODE CATHODE wie
16. tional electron writing gun deflection plates post accelerator and phosphor screen In addition there are two floodguns a collimator a collector mesh and a storage mesh These added elements make possible the variable persistence and storage funetions of the instrument 4 36 Flood Guns Two flood guns are located on the electron gun outside of the horizontal deflection plates Horizontal drivers A6Q1 and A6Q2 prevent flood gun electrons from flowing through the deflec tion plates to the output stage of the plug in The guns operate continuously when the power switch is ON An electron cloud that is emitted by the flood guns is accelerated toward the CRT screen by collimator and collector mesh voltages These electrons make stored or persisting display visible They are also used to erase stored and persisting displays 4 37 Collimator The collimator is an internal coating along the tapered portion of the CRT A posi tive voltage applied to the collimator focuses the flood gun electrons The flood gun electrons are form ed into a column perpendicular to and approximately equal to the width of the CRT screen 4 38 Collector Mesh The collector mesh is be tween the fleod guns and the storage mesh closer to the storage mesh It is alwasy positive with respect to the storage mesh except in the ERASE mode of opera tion both are then at the same potential In addition to accelerating flood gun electrons the collector
17. v Xov 921AJ9g suonoeuuo xoep urSn q 9 8 ANILLA 200 LIP y2 gt e 01 6 ez A OL F Z g EZ 906 22 az p08 idi LNI NI 9n d 8V1S 20 LIGIHNI d33MS 906 12 AE M 26 46 02 gt IN oz 6 GGHZV bSHZV WOUA TVI AI 6 Se VNBIS e 8 os NNOH9 IVNDIS 28 9 ZUJSY MONA dl ee 33N3LSISHJA JIBVISVA ON lt ai nF 9 ere t Nid v Nid 926 ir 01 2r 01 e EE gt DN SdAH 01 SNIMNV 18 Q3ddOHO wanazi Si bi Si IL WOH4 DVA EC e lt tl 16 16 gt lt lt 4 pH 1 HOH OVAE 9 _ _ __ 0 mm maka zi tee TT riii HA 01 MC 8 zu O L ed amp 2 0 0 606 OIL LNI 1 20 LNI 6 Q_ WA r 6 2 Z Ce W ALay ONN 9 e 8 e 2v WOHJ NUNLEY GNNONY L W ON 3 AAA lt F zvoni NO 9 4 4 NIS WV W G 1956 e JES 330NI3 36 Oni gt SI Nid ZI 01 926 NI 9Nd d33MS WON3 ONAS 39V8L TIVNO 91 Nid a vo 906 of OL ie eee SP 6 xa HZH WOMA 1NNHS A8vz4 YZY WOH3i s 2V WOH4 ADO e r Jee ee SdAH Ol 31V9 ONIMNVTBNA N 26 43ddn 43MOT Xov Ni 5n1d Ni 9n Id TVANOZINOH TYDILHZA if LIFT PPOW 3 90 1 8 11b14 N Toa w m NG x lll 1 ooo U
18. 00141 61627 5060 0521 0510 0089 00140 23101 5060 1686 SE eni Oty n mb eb ech vanih sch NON Wambi NO P lt Table 6 2 Replaceable Parts Cont d Description PANEL EXTRUDED DECK VERTICAL GUSSET CENTER DECK MAIN BRACKET DIODE BRACKET RESISTOR BRACKET CAPACITOR BRACKET RESISTOR BRACKET RESISTOR COVER CAPACITOR COVER HIGH VOLTAGE BOARD SHIELD ASSY CRT SIDE COVER HIGH VOLTAGE BOARD BRACKET ASSY CRT BRACKET COIL SUPPORT CRT SHIELD GUIDE PLUG IN CONTACT CRT SOCKET BUSHING POTENTIOMETER TRIM PLASTIC HANDLE TRIM PLASTIC HANDLE STANO TILT MOUNT SHOCK INSULATOR COVER POTENTIOMETER PLATE FLUTED ALUMINUM FEET REAR LONG SHIELD FAN TSTR SI PNP TSTR SI NPN TSTR Si NPN TSTR SI NPN RF XD COMP 33K OHM 10 1 2W R FXD WW 2X 1200 2406 OHM 5 TOW R FXD WW 14 OHM 5 10W R FXD WW 14 OHM 5 IOW R VAR COMP 1 5 MEGOHM 30 LIN 1 2W R VAR COMP 5 MEGOHM 30 LIN 1 2W R VAR COMP GANGED 2K OHM 30 LIN 1 2W R VAR COMP 5001 OHM LIN 1 4W R VAR CERMET 1 MEGOHM 20 LIN AN R VAR CERMET 1 MEGOHM 20 LIN 2W R FXD WW 0 27 OHMS 3 SW SWITCH TOGGLE DPDT SWITCH THERMAL SPST SWITCH SLIDE DPDT TRANSFORMER POWER BOARD TERMINAL STRIP TERMINAL LUG TYPE CATHODE RAY STORAGE TUBE CABLE ASSY POWER 7 5 FT CABLE MAIN CAB E TWIN LEAD ASSY CABLE TWIN LEAD ASSY CABLE COAX P O MAIN CABLE CABLE COAX P O MAIN CABLE CABLE ASSY CABLE ASSY RING RETAINING FOR 0 188 DIA SHAFT PIN GUI
19. 8 1 8 17 Filter Maintenance 8 1 8 19 Electrical Maintenance 8 2 8 21 Repair and Replacement 8 2 8 23 Instrument Repair 8 2 8 26 CRT Remova and Replace INDE eco tren eec AMEN 8 2 8 29 Fan Removal and Replace TAE dE WA WA FO 8 2 8 31 Semiconductor Replace MENG en snik Za de da EM 8 2 ili Table of Contents List of Illustrati Model 141T TABLE OF CONTENTS Cont d Section Title Page Section Page 8 33 Servicing Circuit Boards 8 2 8 45 Final Checks 8 4 8 36 Overall Troubleshooting 8 3 8 47 Detailed Troubleshooting 8 4 8 39 Front Panel Controls 8 3 8 48 Low voltage Supply 8 4 8 41 Visual Checks 8 3 8 55 High voltage Supply 8 4 8 43 Waveforms and Voltages 8 4 8 60 Pulse Circuit 8 6 LIST OF ILLUSTRATIONS Figure Title Page Figure Title Page L1 Model 141T Display Section 1 0 61 Cabinet Parts Exploded View 6 10 1 2 Instrument Serial Number 1 3 6 2 Mechanical Parts Front View 6 11 6 3 Mechanical Parts Rear View 6 12 2 1 Voltage Selection 2 1 6 4 Mechanical Parts Top View 6 13 2 2 Rear Mounting Procedure 2 2 6 5 Mechanical Parts Bottom View 6 14 71A Effect of Change 11 7
20. A5R72 A5R73 A5R74 A5R75 A5R76 A5R77 A5R80 Figure 8 14 Replace figure 8 14 with figure 7 1 7 2 Model 141 T Figure 8 16 Replace figure 8 16 with figure 7 2 CHANGE 8 Table 1 1 Change Power Requirements to 115 or 230 volts 10 50 to 60 Hz normally less than 285 watts varies with plug in units Paragraph 2 7 Replace with the following The instrument re quires a power source of either 115 or 230 volts ac 10 single phase 50 to 60 Hz which can deliver approximately 300 watts A rear panel switch provides selection of the line voltage to be used Before placing this instrument in oper ation be sure to set the rear panel switch to agree with the line voltage being used Refer to figure 3 2 Proper Intensity Adjustment to avoid damag ing CRT Paragraph 2 7a Add the following paragraph 2 7a after para graph 2 7 When operating from a 230 volt source set the rear panel switch to 230 and re place line fuse Fl with a 2 amp slow blow type The fuse is accessible by removing the bottom cover of the instrument Figure 2 1 Delete figure 2 1 Paragraph 4 5 Change first sentence to read The low voltage supply uses 115 or 230 volts ac rear panel switch single phase 50 60 Hz Table 6 2 Delete A7 Add Fl HP Part Number 2110 0014 Qty 1 FUSE CARTRIDGE 4 AMP 125V SLOW BLOW Mfr Code 71400 Mfr Part Number MDX 4 Add Fl HP Part Number 2110 0303 Qty 1 FUSE CARTRIDGE 2 AMP
21. L1 4W A5R7 0684 2231 RIFXD COMP 22K UHM 10 1 4 ASRB 0698 3155 R FXD MET FEM 4 64K OHM 12 1788 ASRI 0757 0430 R EFXD MET FLM 2 21K OHM 12 1 28w A5R10 2100 3424 R VAR COMP 2 X SOK OKK 201 LIN 1 4 ASRI 0757 0449 RiFXO PLM k50K OHM iX 178 ASREZ 0757 0473 R FXD MET FLM 221K OHM 1 1 8w A5R 0757 0481 R FXD MET FLN 475K OHM 1 1 8w ASRA 2100 0963 RIVAR COMP 3 X LOOK GHM 20 LIN 1 4 A5R15 0684 2221 R FXD COMP 2200 DHM 10 1 4W ASRLE 0757 0456 R FXD MET FLM ILOK OHM 1 1 84 A5R17T 0684 1831 R FXO COMP LBK OBM 103 1 44 ABRIS 0684 1061 RIFXU COMP 10 MEGOHM 10 1 4W A5R19 0684 4741 RES COMP 470K OHM 10 1 4 ASR20 0698 4003 RIFXO FLM SOK OHM iZ i dw A5R21 0751 0476 R FXD MET FEK 301K OHM 1 1 8 A5R22 0757 0456 RIFXD MET FLM 43 2K OHM 11 1 9N A5R23 0757 0128 R FKD MET FLM 200K OHM iX 1 2 ASR24 06584 1061 R FXO COMP 10 MEGOHM 19 i 4W ASR25 0757 0850 RIFXD MET FLH 39 2K GHM 1 08 l Zw 15R26 0757 9367 RIFXO MET FLA 100K DHM LZ L Aw ASR 0751 0461 R FXO MET FLM 475K OHM IZ L BW ASRZB 06845 2221 RIEXD COMP 2200 DHA 103 1 44 ASRZO 0684 5611 RIFXD COMP 560 OHM 10 L 4W A5R30 0757 0793 RIFXD FLM 825K OHM 1 0 A5R31 0684 2241 R FXO COMP 220K GHM 10 1 48 A5R32 0684 1031 RiFXD CLMP LOK UHM LOX 1 49 A5R33 06845 1051 R XD CUKP LMEGOHM 1 1 4W ASR34 0684 1031 R FXD COMP LOK UMM 103 174 A5R35 05684 1031 RIFEKO COMP LOK OHM 10 1 48 AS5R 356 0554 1031 R FX COMP 10K BRM 10 i 4M See introduction to this section for ordering informatio
22. Qty 1 POWER SUPPLY BOARD ASSY Mfr Code 28480 Mfr Part Number 00141 66518 Bl Change to HP Part Number 3160 0218 Qty 1 FAN TUBEAXIAL 50 60 HZ Mfr Code 28480 Mfr Part Number 3160 0218 Delete A2R86 Figures 8 8 8 12 Delete R86 Figure 8 13 Delete A2R86 CHANGE 6 Table 6 2 MP125 Change to HP Part Number 5040 0447 Qty 4 FEET REAR LONG Mfr Code 18480 Mfr Part Number 5060 0447 CHANGE 7 Table 6 2 A5 Change to HP Part Number 00141 66513 Qty 1 PULSE CIRCUIT BOARD ASSY Mfr Code 28480 Mfr Part Number 00141 66513 V1 Change to HP Part Number 5083 2572 Qty 1 CATHODE RAY STORAGE TUBE Mfr Code 28480 Mfr Part Number 5083 2572 AB Change to HP Part Number 00141 66513 Qty 1 PULSE CIRCUIT BOARD ASSY Mfr Code 28480 Mfr Part Number 00141 66513 Add A5C9 HP Part Number 0160 0154 Qty 1 C FXD MICA MY 0 0022 UF 1095 200 VDCW Mfr Code 56289 Mfr Part Number 192P22292 PTS Delete A5C14 A5C15 A5C16 A5C17 Delete A5CR28 A5CR29 Delete A5Q18 A5Q19 A5Q20 A5Q21 A5Q22 A5R7 Change to HP Part Number 0684 1041 Qty 5 R FXD COMP 100K OHM 10 1 4W Mfr Code 01121 Mfr Part Number CB 1041 Add A5R39 HP Part Number 0684 1061 Qty 1 R FXD COMP 10 MEGOHM 10 1 4W Mfr Code 01121 Mfr Part Number CB 1061 Add A5R40 HP Part Number 0684 4731 Qty 1 R FXD COMP 47K OHM 109 1 4W Mfr Code 01121 Mfr Pari Number CB 4781 Delete A5R65 A5R67 A5R68 A5R70 ASRTI
23. The divider shield that separates the two compartments can be removed and one double sized plug in installed Blank plug in kits both single and double sized are avail able for fabrication of special circuits See table 4 1 for power supply current limitations 1 1 General Information Model 141 T Table 1 1 Specifications PLUG INS Accepts Model 8550 series IF and RF Section spec trum analyzer plug ins without the use of a center divider shield Also accepts all HP Model 1400 series plug ins All plug ins operate directly into the horizonta and vertical deflection plates Center shield may be removed to provide double sized compartment for use with a single dual axis Model 1400 series unit CATHODE RAY TUBE Type Post accelerator storage tube 9000V accelerating potential aluminized P31 phosphor etched safety glass face plate Graticule 8 x 10 divisions approx 7 1 x 8 9 cm parallax free internal graticule Subdivisions of 0 2 div per major division on major horizontal and vertical axes Intensity Modulation AC coupled 20 volt pulse will blank trace of normal intensity input terminals on rear panel PERSISTENCE Conventional l Natural persistence of P31 phosphor about 40 usec Variable STANDARD Writing Speed Mode Continuously variable from less than 0 2 second to more than one minute ERASE Manual or optional remote see Section VII options Erasure takes approximately 350 msec
24. and finally change 1 If the serial prefix of the instrument is not listed either in the title page or in table 7 1 refer to an enclosed MANUAL CHANGES sheet for updating information Also ifa MANUAL CHANGES sheet is supplied make all indicated ERRATA cor rections Table 7 1 Manual Changes Serial Prefix Make Changes 950 973 12 through 1 1047A 12 through 2 1112A 12 through 3 1113A 12 through 4 1141A 12 through 5 1145A 12 through 6 1147A 12 through 7 1218A 12 through 8 12 through 9 12 through 10 12 and 11 12 1223A 1232A 1250A 1315A 1320A 1337A 1502A CHANGE 1 Paragraph 4 18 Sentence 5 Change R11 to A2R42 Table 6 2 A2 Change to HP Part Number 00141 66514 Qty 1 POWER SUPPLY BOARD ASSY Mfr Code 28480 Mfr Part No 00141 66514 Add A2R42 HP Part Number 0811 1746 Qty 1 R FXD WW 0 36 OHM 5 2W Mfr Code 28480 Mfr Part Number 0811 1746 Figures 8 8 8 10 Add R42 between R3 and R46 on A2 assembly photo Add R42 0 36 ohms between the anode of A2CR16 and the base of A2Q10 CHANGE 2 Table 6 2 MP18 Change to HP Part Number 00141 60202 FL1 Change to HP Part Number 9100 2818 Qty 1 FILTER LINE 115 230 VAC Mfr Code 56289 Mfr Part Number JN10 1991A1 J3 Change to HP Part Number 1251 0148 Qty 1 J NSR P O FL1 Mfr Code 87930 Mfr Part Number 1065 1 S4 Change to HP Part Number 3101 0011 Qty 1 SWITCH SLIDE
25. 0757 0428 A2852 0761 0075 R FXD MET OX LOK OHM 58 IH 0761 0075 A2R54 0698 3555 R FXD MET FLM 4 437K OHM 0 5 1 2W 0698 3555 A2R55 0538 3554 RIFXO MET FEM 493 OHM 2 5 1 2 0698 3554 AZR56 05684 33231 RIFXD COMP 33K OHM 10 i 4W 8 3231 AZRST 0758 0054 R FXD MET OX 330 OHM 5 1 2 0753 0054 A2R58 0584 1021 RIFXD COMP 1000 OHM 10 1 4W CB i021 See introduction to this section for ordering information 6 5 Replaceable Parts Model 141T Table 6 2 Replaceable Parts Cont d Reference Mfr Part Number Designation HP Part Number Oty Description 0884 1021 R FXD COMP 1000 OHM 10 1 4W 01121 CB 1021 0684 1021 R FXD CUMP 1000 OHM 10 1 4N Oiizl C 1021 0721 0845 RIFXU FLM 1 75 MEGOUHM L w 25480 072T 0845 0757 0057 R FXD FLM 990K OHM 1 1 2W 28480 0757 0057 2100 0996 KVAR CUMP 1 MEGOHM 30 LIN 1 5 3480 2100 0096 0683 1535 R FXD CUMP 15K OHM SE L 4W 61121 CB 1535 zio0 2108 R VAR CUMP 1 5 MEGOHM 30 LIN 1 5w 28480 2100 2108 0694 5666 R FXO FLM 33 MEGUHM 5 iw 24450 0698 6666 0757 0344 R EXD MET FLM 1 00 MEGUHM 1 L 4w 28480 0757 0344 0761 0004 RIEXD MET GX ZOK UHM 5 iw 28480 0761 0004 0751 0839 R FXD MET FLM JOK DHM 1 l ZM 28480 0757 0839 0757 0768 R FXO FEM 47 5K OHM 12 i 4wW 28480 07571 0768 0757 0454 R FKD MET FEM 33 2K OHM 1 1 8 28480 0751 0454 2100 0095 R VAR COMP LOOK OHM 302 LIN 1 5w
26. 1 10 The Model 141T uses a post accelerator CRT with a non glare rectangular faceplate An internal graticule is located on the same plane as the display to eliminate parallax errors The tube has a 9 kV accelerating potential and 8 vertical by 10 horizontal divisions A type P31 phosphor is used in the standard CRT The warranty may be void for instruments having a mutilated serial number tag 1 11 WARRANTY 1 12 The instrument except the CRT is certified and warranted as stated on the inside front cover of this manual The CRT is covered by a separate warranty The CRT warranty and a warranty claim form are located at the rear of this manual Should the CRT fail within the time specified on the CRT warranty page complete the warranty claim form and return it with the defective CRT The procedure for returning a defective CRT is described on the CRT warranty page U 1 13 ASSOCIATED EQUIPMENT 1 14 Plug ins available for use with the instrument are listed in table 1 3 and in the Hewlett Packard Instrumentation Catalog The instrumentis normally operated with an IF section plugin in the lower compartment and an RF section plug in in the upper compartment The instrument can also be used as an oscilloscope with a vertical plug in in the lower compartment and a time base plug in in the upper compartment Both plug in compartments are the same size and the plug in instruments may be inter changed for any special application
27. 1019 1g2 siz aL AELEZ S0S 181 SAV WEM DIZZ BRAKU 00 Wen WA 5919 PELI 01 red Misc Mi ica cda AGA t896 928 011 XM 46 066 808 Bi GE ee 031541 ON SYAHY SD Svx3i pb pueisas Fe KOJ Gd 04 9 996 10 BL pi 896 ninjouo 190 986 016 XML Mara er 05807 eijAx20H Wag Dm o5 792 0004 692 809 184 I 90591 O2IX3W MAN peci Aru 990 0650 96 ri p 491 Broz 619 Ri Zo Gy Amen 94043 Z weu 6896 Sigg LLES SHY 183 567 906 XN Zen XML ES pi Adinog BOIS OGC atang xaa any V 139 AILAYSEN D1S1 926 915 Kiti 0008 692 1071 O0vS v6 UOCI ei cr e Bide Aib e sra d y 9109911 IM POOG SERS 80608 visn5ny 0054 942 JA vein sya oo Io Ha uD a DD MEN ooh C NE sr sin a her 8 vani HIER OE Pi osz Nadal 12243 EN UON E 6E 435 3 MAN OR Am 069 992 018 ER RAN za aeuodry amay B SSINNA Bais Og Od 8680 266 1609 pi eeng qM DOE ally eet AUI PIPER Au RODA EU PEDIA bo WNTIOHYO HEHON 30189 sueo 1255556018 XML grege siue asp ici YINIDBIA 534 813 292 009 BL 1029 12 1906 81 ene 96 Qd SE tuoi GOES 09282 SALE OZ 1960 066 0 XML Qi 29002 1guuay VID8035 011Z 58y 916 XAU bbz bi DLG XM peou Guil H 01959 0020 5426 815 91 peo Eug pitns hog SHURA BEZE ECH ISE Po 900 181 YNITONYO HLNOS 26441 AINGROOJA ug OD 09 Kog Od ROSHEN posi 194 eel Lg eZ 40086 SAA Iv ISO Mit SKEMSSOJA VISYUBIN YRVISINOT 9606 UODIRUAS
28. 2 gQ osu 2 H teu Bu od 60 9 LZEO SHO G za 2 S9H OCH c2 pd Ld ZD 80 Ya OCH EH PHO Ca LD 301 51530 20 91530 307 5is3d 201 91 30 907 91830 201 9536 201 91534 907 91830 338 Old 338 09 33H aias d3u HE 438 0139 dat Giao 333 G9 338 pieoq gu JO opis aya ujO4j Bui iapjoS 5 180 Siyi s jou JUBUOdUWOJ uBnoiuui paiejd aaey spaeoq l noio l _ LIFT PPOW 2 Gb ih Si u Livi LIVI PPOW Sv auvog 35 OL HS3N J9VHOLS Oi Here ILWIS 600 uondo j j ast o LG er S Q i3iHS suond pue sodueyo GL NJEWIYIS PMID osma ZL ANS AAA 8 8tvI i 9 6 HOLVNITIOD OBI PI l Ho 1 26 ogy ACO q KAPE pel ose PI 00 z Wi 954 2 0 6 R een 5289 07 HS3W 01231100 lt m Me AGI me A 8 194 M ib 012 9242 BA JA9 2 iGece6 A8bZ ONDINY 18 1HZY lt g zni AS 2I K 2 6 jA9 zi 300012313 ONIMOVB LE 32v AN AS 6 Ob JA9 ZI o 2200 WO 4619 ZZH2 65 OZY SCH AS 294 Sv u I0 ZID d313l NA 700 ver ya YZS JAS ZI AOOI 210 MOL rav boy rav ieu HO12310Hqd TS bu 1102 015 7 102 A HOS INJISNY 1 299 EET m 21001 35 e E Gu f 819 T M Zb s 9IO GIO PID ZASE a 882 AE ch AGO SR 100810 Ka Atz ONDINYV 18 2H2 u
29. 28480 2100 0095 0127 0545 K FXD FLM 1 78 MEGOHM 1 1 24 28 460 0221 0845 0698 3553 0698 3553 RIEXD FLM 2 49 MEGUHM 1 1 28 28460 0698 3553 R FXD FLM 2 59 MEGOHM 1 1 28 28480 0693 3553 0698 1553 RIFXO FLM 2 49 MEGOHM 1 1 25 28480 0698 3553 0698 3553 RiFXD FLM 2 49 MEGOHM 13 i 2W 8480 0698 3553 0698 3553 RIFXD FLM 2 49 MEGOHM 1 1 24 28480 0693 3553 0695 3553 R FXD FLM 2 49 MEGOHM 1 1 2W 28480 06598 3553 0698 3553 R zFXD FLM 2 49 MEGOHM 12 1 2M 28480 0698 3553 0695 3553 R FXD FLM 2 49 MEGUHM 1 1 248 28480 0698 3553 0757 0344 REXO MET FLM 1 00 MEGOHM 1 i 4W 28480 0751 0344 0751 0452 R FXD MET FLA 27 4K OHM 1 i W 28480 9757 0452 23480 0757 0465 0157 0465 amp SFXD MET FEM LOOK OHM IZ 1 8W 05684 2221 R FXD COMP 2200 OHM 10 1 48 01121 CB 2221 0558 6286 R FXD COMP 100 MEGOHM 102 4 8480 0698 6286 09014 1 64102 TRANSFORMER ASSY 28460 00151 61102 1940 0013 ELECTRON TUBE 82 0 t IV 75276 182R1 2140 0014 LAMP GLOW 0 5 MILLIAMPS T 2 BULB 71744 SABINE 96 2140 0014 LAMP GLOW 0 5 MILLIAMPS T 2 BULB 71744 SABINE 985 2140 0014 LAMP GLOW 0 5 MILLIAMPS 7 2 BULA 71744 SABINE 96 1902 3402 lt DIODE BREAKOGHN 80 6V 2 28480 1902 3402 1902 5034 DIODE 5 76V 10 28480 1902 0034 04713 28480 28480 28480 5210939 150 1902 3385 1902 3385 1902 0064 1
30. 46 01i2i 8 6831 0634 4721 RiFXD CUMP 4700 OHM 10 1744 01141 CH 4721 G684 3321 R FXD COMP 3300 UHM 10 1 4W 01121 CH 3321 0684 6831 R IFXD COMP 68K OHM 10 l 4W O0lizl CB 5331 0054 4721 R FXD COMP 4700 OHM 10 1 4 Gil k CB 4721 0684 3321 R IFXD COMP 3300 OHM 108 1 4 IKEA CB 3321 0684 2251 R FXD COMP 22K OHM 10 1 4W 01121 CB 2231 2684 4721 RIFXD COMP 4700 OHM 10 4w 01121 CB 4721 0583 1555 R FXD COMP 1 5 MEGUHM 5 1 4 901121 LB 1555 0684 1021 RIFXD CUMP 1000 OHM 10 1 4 01121 L 1021 0684 1021 R FXD COMP 1000 UHM 10 174 01121 CB 1021 0683 5635 R FXD 56K OHM 5 1 4W 01121 C8 5635 3101 1259 SWITCH 6 SECTIONS 28480 3101 1259 1902 3104 DIODE BREAKDOWN 5 62 V 5 04713 SZ10939 110 1902 0597 DIODE BREAKDOWN 56 2V 5 tW 28480 1902 0597 00141 65502 HORIZONTAL DRIVER ASSY 28480 00141 665G2 0150 0052 C FXD CER 0 05 UF 20 400VOL e 56289 33C17A 0150 0052 C FXD CER 0 05 UF 20 4U0VOCw 5628 33L17A 9170 0029 CORE MAG SHIELDING BEAD 02114 6 590 65A2 4A 9170 0029 CORE MAG SHIELDING BEAD 02114 56 590 6542 4A 1853 0038 TSTR SI PNP 28480 1853 0038 1853 0038 TSTR SI PNP 28480 1853 0038 0757 0401 R EXD MET F M 100 OHM 1 1 8W 28480 0757 0401 0757 0401 R FXD MET FEM 100 OHM 1 1 8W 28480 0757 0401 0757 0850 RIFXD MET F LM 39 2K OHM 1 0 1 2W 28480 0757 0850 0757 0850 R FXD MET FLM 39 2K OHM 1 0 1 2W 28480 0757 0850 0757 0401 R FXD MET FLM 100 OHM 1 1 8W 28480 0757 0401 0960 0443 ASSY PUWER MODULE 28480 0960 0443 5020 8122 LINE VOLTAGE SELECTION
31. Align 3 1 3 7 Beam Finder 3 1 3 9 Focus and Astigmatism 3 1 3 11 Z axis Input 3 1 3 13 Plugin Units 3 1 3 19 Operating Considerations 3 4 3 20 Definitions 3 4 3 22 Control Functions 3 4 3 30 Operating Procedures 3 5 3 32 Single shot Operation 3 6 PRINCIPLES OF OPERATION 4 1 4 1 Introduction c ios i Ol ya 4 1 4 3 Overall Functional Description 44 4 5 Low voltage Power Supply 4 1 4 7 erte en ai io ade 4 1 4 9 High voltage Power Supply 4 1 4 11 Pulse Circuit 4 2 4 13 Horizontal Driver Circuit 4 2 4 15 Circuit Description 4 2 4 16 Low voltage Power Supply 4 2 4 24 Calibrator 4 3 4 28 High voltage Supply 4 3 4 34 Storage CRT SLA prr 4 4 4 41 Pulse Circuit 44 3 4 44 STD and Fast Modes 4 4 4 53 Pulse Circuit Store Mode 4 6 4 57 Pulse Circuit Conventional MOJE ai 4 6 4 60 Trace Align 4 7 4 8 4 62 Plug in Kit Fabrication 4 7 4 8 TABLE OF CONTENTS Section V VI VII VHI Title Page PERFORMANCE CHECK AND AD E JUSTMENTS A torent nites 5 1 5 1 Introduction 5 1 5 3 Test Eguipment KD 5 5 Performance Check
32. CARD 25550 5020 8122 2110 0014 FUSE CARTRIDGE 4 AMP 125V SLOW BLOW 78918 313004 100V OR 120V OPERATION ONLY 2110 0303 FUSE CARTRIDGE 2 AMP 250V SLOW BLOW 220 OR 240V OPERATION ONLY 71400 MDX 24 See introduction to this section for ordering information 6 8 Model 141T KFR NO 00000 01121 01295 03508 04713 06540 97263 08718 14655 26365 27131 28480 56289 5B474 71400 711468 11590 71107 71744 71785 72825 72982 74276 75915 76530 79136 80131 82142 82389 83350 91418 91586 92702 35348 37454 Table 6 3 List of Manufacturers Codes MANUFACTURER NAME NO M F DESCRIPTION FOR U S A COMMON ALLEN BRADLEY CO TEXAS INSTRUMENTS INC G E CO SEMICONDUCTOR PROG DEPT MOTOROLA SEMICONDUCTOR PROD INC AMATOM ELECT HARDWARE CO INC FAIRCHILD CAMERA amp INST CORP SEMICONDUCTOR DIV NO M F DESCRIPTION F R THIS MFG NUMBER CORNELL DWBLIER ELEGL L OFV FEDERAL PAZSETU ELGG E GRIrS REPRODU ER CORP CUTLER HAMMER INC POWER DIST amp CONTROL DIV HEWLETT PACKARD CG CORPORATE HO SPRAGUE ELECTRIC CI SUPERIOR ELECTRIC CO THE BUSSMANN MFG DIV MC GRAW EDISON CO ETT CANNON ELECT INC GLOBE UNION INC CENTRALAB DIV COTO COIL C INC CHICAGO MINIATUR LAMP WORKS CINCH MFG CO DIV TRW INC EBY HUGH Ha INC ERIE FECHNOLOGI CAL SIGNAL ITE INC LITTELFUSE INC CINCH MONADNOCK MILLS DIV FRW INC WALDES KGMINOOR INC ELECTRONIC INDUSTRIES ASSOCIATION AIRCO SPEER ELECT COMP SW
33. CONN ST LOUIS MI LOS ANGELES CALIF MILWAUKEE WESC PROVIDENCE R L CHECAGO Til ELK GROVE VILLAGE PHILADELPHIA PA ERIE PA NEPTJNE Naja DES PLAJNES ILL CITY OF INDUSTRY CALIF LONG IS CITY N Y WASHINGTON O C DU BIJIS PA CHICAGO itle BROOKLYN Nate CHICAGO ilie ATTLE BORG MASS 4ESTSURY Leles BLOGMFLEL O Neda IRYINGTON Nado TLL Nate See introduction to this section for ordering information Replaceable Parts liP cont 3204 75231 13201 85008 1080 94040 67195 10802 53216 01247 06010 53017 90031 53201 02995 50640 19144 16512 07753 60015 91746 11101 20006 15801 60630 11207 60646 92703 11330 97003 07111 6 9 Replaceable Parts Model 141T 1411 A 1 06 76 Figure 6 1 Cabinet Parts Exploded View Model 141T MER NO 09560 01121 91295 03508 04713 06540 07263 08728 14655 26365 27191 28480 56289 58474 71400 71468 71590 7170 71744 71785 72825 72982 74276 75915 76530 79136 80131 82142 82389 83330 91418 91508 92702 95348 97464 Table 6 3 List of Manufacturers Codes MANUFACTURER NAME NO M F DESCRIPTION FOR THIS MFG NUMBER U S A COMMON ALLEN BRADLEY CO TEXAS INSTRUMENTS INC SEMICONDUCTOR COMPONENTS DIV G E CO SEMICONDUCTOR PROD DEPT MOTOROLA SEMICONDUCTOR PROD INC AMATOM ELECT HARDWARE CO INC FAIRCHILD CAMERA amp INST CORP SEMICONDUCTOR DIV NO M F DESCRIPTION FOR THIS MFG NUMBER CORNE
34. CRT and cooling fan for repair and replacement are also contained in this section 8 3 SCHEMATICS 8 4 Schematics are printed on foldout pages for easy reference to the text and figures in other sections The schematics are drawn to show the electronic function of the circuits Any one schematic may in clude all or part of several different physical as semblies 8 5 The schematics are numbered in seguence with a bold number in a box at the lower right hand corner of each page These numbers are used to cross reference signal connections between sche matics At each circuit breaking point a notation is made of the signal name and a number in bold type This number indicates the associated sche matic which shows the source or destination of the signal To find the source or destination of any point on a given schematic turn to the schematic re ferred to by number and find the name of the signal in question 8 6 A table on each schematic lists aH com ponents shown on the schematic by reference desig nation Component reference designators which have been deleted from the schematic are listed below the table 8 7 All components within the shaded areas of a schematic are physically located on circuit boards Components not physically located on a circuit board are shown in the unshaded areas of the sche matic 8 8 REFERENCE DESIGNATIONS 8 9 The unit system of reference designations used in this manual is in acc
35. Cas MO BAAN ZIH d gt rc ma A GREW T 206 caw 40103T100 BIE REF p 593 39VH0LS C U HOLVUHTIJDOV 180d Dr wie NNOO leg 0 9 oyat AH 3181X314 9 4186 deno 3249 gt 35 044 102 838 Wi L938 A0099 WEE 994 A8t2 AH euism MO i A 4066 006 i 29H 098 Aatel i A9 ZI 3090 i gt jo Jno Wazi 122 ET y wei fa Gol e eee CA AQOI 0001 kro f i 698 ASST i GEN xoz AS 9 698 SID PID HOLVINOGHU ISIA 39VI10OA H9IH VIDI A 6 002b Sis LAE AAISN3IN NS Dab oy Ooit vid KC AOSLZ Gi you 282 LINA V sv GJOV IdJA 38 1SnW ONV LINN G371V3S V SI SIKL ALON uJIditi EVOK Yo sl A AGOZ KI HO LV T NOSO w AH Q ik e amann AS 3991 OA MSIH ATddN uaMOd I zv oa RA 120025 HOLVHBIAIITAW 3SVH3 ZHOOI dA9 Z x ug 2 x AS Zi x somo asina sv RE A SIHOSY G YSY B YGY LIYSV GYUGY ZPUGY GM 59 629 10313130 NAA 86 SIiVW3HOS SIHL NO Si HVd Ef Nid TOHLNOD gt 39N31SiSH3d ive NI DANA OF Wi 6 gt GONJISISH3d GONAISISH3d did Olu A001 190 600 Kon op 3SVH3 3LOW3Y OL suuojaapj CIS ANSIA ERIS S OBONVHO 2 3 811 AIG D3SWZ AIG AS lt R AMASA 02
36. I 3 1 555 iri d W jose casal i i TEEN ie CHA A 0 ci i C i n OF d da 5 Am E ga 3 i j x v d GET A w d me eg ES si x LIT PPON SLE 5y8 VCO GOEG VEG X399 OY 0124 XOVG SHE 921 22 918 XML 10991 64 icit 481 POS ou aM M n UU DIER i KIPINDI CAST LON SVAHY HAHLO SERAY VSMIVAMIH UEG 9999 12 KON RURY Dsg NS AJZLELPX EREM HAG 02104010 et IER AMA BUE utauta KEE RT 19V15S02 ZSVI id NIACHS LON SUMINnOOS ESYS 310008 ONY NVINVEUZLO 30 ixesn 3ILAVFUY 79108 ERZEL PL ae ou xod Od pi tiqwe Angl fs VIBWYZ Ee wty GUI NI 3166 BEE gedu LIST 06 Qd pr y ape tege gut EDDY vanysn xaxbueg YSZWI A ae AEEGLE Jor i konusa RA Asin Xeibueg Reaping 42189923 1 023 911 792 Yaman GR ent OEG P nt 690 Ma 15212 al It REN 1 198 KOE Od en ty Deeg eumesa mega KE 12471 DNVMOINVS 31929 SNYMNNYS PERE Vogt PAILLELZE 391 oat Jedi Dem mg fund gz on BH 709 5 fuemy uec AQ ona alegre 0 daj WE BUT um SES aum ng GE AS AA ES divi X9ydM3H 3 HIVIBADH PERL MAKI EZ LOSES Ri gui MO uy 1 as pro ISHA TENG uny se Em vti DET ISJ 193 Eed RENO NAVA MAM NA EVIE GR 19A CELA SEE dei PURA 00039 HAE EN a Jose NAPADE PA MAMISODNA AS edu SZ92 ap POZ 162 Ri
37. LIGHT 28480 5050 053 MP5Q 5060 0428 i FILTER ASSY AIR 28450 5060 0428 HPSS 00140 00104 L GUSSET SIOE 28480 00140 00104 MPST NOT ASSIGNED MPSG 00140 01201 1 BRACKET LATCH 28489 00240 01201 HP53 00141 01209 2 BRACKET zFAN 28459 00141 01209 KP l 80140 01208 4 BRACKET PANEL 28480 00140 01 208 MP65 00140 01205 2 BRACKET GUSSET 28480 00140 01209 k n 00140 0121L0 2 BRACKET TRANSISTOR INCLUDES MP38 28480 00150 01210 MP6S 00140 24703 5 SUPPORT PANEL BRACKET 28480 00140 24703 See introduction to this section for ordering information Model 141T Reference Designation MP73 MP74 MP75 MP76 MP77 MP78 MP79 MP8B MP89 MP9G MP91 MP92 MP93 MP94 MP95 MP97 MP99 MP105 MP 116 MP117 MP118 MP118 MP120 MP121 MP124 MP125 MP126 Q1 Q2 03 HP Part Number 00140 29902 00141 00105 00141 00103 00141 00104 00141 01207 1400 0651 00141 01203 00141 01204 00141 01208 00141 04101 00141 04104 00146 60602 00141 04105 00141 61206 00180 01218 00140 24712 1608 1 10B 1200 0050 1410 0052 5040 0708 5040 0710 1490 0030 1520 0094 5040 0421 5000 0053 00141 21001 5000 8015 1853 0252 1854 0294 1854 0294 1854 0294 0687 3331 0815 0031 0811 2030 0811 2030 2100 2962 2100 0374 2100 0445 2100 0015 2100 2897 2100 2897 0811 2994 3101 0056 3103 0009 3101 0011 9100 3285 0360 0015 0360 0012 5083 2587 Zigo 8120 1538 00141 61632 00141 61624 00141 61625 00141 61622 00141 61623
38. MAINTENANCE 8 15 DELETED 8 16 DELETED 8 17 FILTER MAINTENANCE 8 18 This instrument uses a wire mesh air filter over the cooling blower If the filter becomes clogged with dirt the blower will not provide adequate cooling for the instrument Check the filter periodically and clean it when necessary To clean remove the filter and use a warm soap and water solution Rinse the filter in clear water and allow it to dry before re installing 8 1 Service 8 19 ELECTRICAL MAINTENANCE 8 20 Do the electrical adjustments in Section V once every 6 months and after repair or component replace ment 8 21 REPAIR AND REPLACEMENT 8 22 The following paragraphs provide information for repair removal and replacement of assemblies subassemblies and components in the Model 141T Special servicing instructions for the circuit boards are covered under paragraphs 8 33 through 8 35 Section VI provides a detailed parts list for use in ordering replacement parts 8 23 INSTRUMENT REPAIR 8 24 Chassis mounted components are identified in figures 8 2 through 8 5 Components on circuit boards are identified in figures near the applicable sche matic also see table 8 3 8 25 Figure 6 1 is an exploded view drawing of the instrument frame All parts are keyed to table 6 2 by reference designators Other mechanical parts are identified in figures 6 2 through 6 5 8 26 CRT REMOVAL AND REPLACEMENT 8 27 Remove the CRT
39. R 15 Pigure 4 2 Regulated Power Supply Block Diagram 4 2 Model H TT 4 19 Figure 8 10 is a schematic diagram of the low voltage power supply The primary winding is wired through a rear panel power module for conversion to 100 120 220 or 240 Vac operation Line voltage is applied to the primary of T1 through an on off switch a fuse and a thermal switch Pilot lamp DS1 lights when power is applied to T1 Two shunt resistors are connected to the 248 volt supply to reduce series regulator power dissipation when high current plug ins are used Each shunt is wired to a rear panel con nector The internal wiring of the plug in determines whether the shunt is in the circuit or not 4 20 100 Volt Supply The ac voltage from the secondary of T1 is rectified by A1CR5 A1CR8 and par tially filtered by C3 and A2R17 The resulting de volt age is applied through the series regulator Q2 to the output Differential amplifier A2Q4 A2Q5 compares the voltage across A2V1 with a sample of the output voltage Any change in output voltage is applied tothe base of driver A2Q3 which controls the bias on regula tor Q2 Series regulator Q2 compensates for the change in output voltage by changing resistance and restores the output level to normal The 100 voit out put is adjusted by A2R11B and fuse A2F2 provides overload protection 4 2 100 Volt Supply Reference voltage for the 100 volt supply is taken from the output of th
40. TOLD M02990 8 24 PAOR ANE MES sou AJA PRYDE Maa ussn 65069 CN pasa 1634 AECH uopua g5 WAHA Aingsuly AG sasodind EVA 9 ssappe POIROT S DI Deeg Heinen GIG Zeg LGOPQW GRASA Si EHS AN use 1 MIR BS WEISS Fun JLAM ma JEPSSIGUM 3214 95 TEN 0 2 PH STRDEK went S0 O 0i0 789 be 01 vs Kei RSH USHORA sb Proy soplo 557 ISTO APEM 10014 Hit PU DADES ARO 224 095 QU vn ESQ 059 120 st KEE g0 peou enn WADI unb BT PPO tia paak 930899 xai ASIKIE RAMAH IRET 1206 826 130 al TOE Pp IVAN SE ARES HAR GS LO MAN HORUS SEGUR BE PI PICO G HIHADH SCHT RED UOPUOT 9108398 AUG HZH SECH HYS 119 51208 MRSS SEJ eui Ale Dan DU SEO Daa MOGDNIN GZ LSK NOVAMJE Hati 95619 14951 2202 06 080 98 91 S I 005 waqg ueqinr Deag abp Lp 90k vega uodissg EGOZE 109 Od prt at truy Jupe KILA Daa i 9000 25 xemt E NUL GEELES Pi GOpL 2290914 odej Dpuwieujd Aug 155404 Jang ed ast 0574 a2uiolg GOES 236 PIEMAJ D I xa Ja PACA EY qjnos ia DUNASINAVHOS ROW ap HEI EPYS Kem 910903 208 61 PrI yeast wojpues POOMADUBJA 190155 auuder Spoo DOBJA Ap Pel EPASUPII umipues pPoomAisj be Km OS BU WAY KINOS suudebuis NJVSMJH 21929 agri SH SETI drodabaj BS XOG Q 4 eipuexary 9153 UIS pui UP YEAR ing verter 10014 MIG Z M8 pn Candi siode urS PEKRE MAH
41. ZA 918 PA gu za go ga viuo v3 12 L I EHA en 9H 9H v 3 aen tl Leg ZE stu zo zu o gt zo s a za amp sto 9 zio EM ZHA BEH ZH zou va vip Z oc Lf i en LO SA Ld 1199 sa Lu ur LHA Led ZH tod 9pH a 6zu 1 3 glu 9 3 sto vo saw ra BZHO er oluo jra 019 EA v 2 9 9 8 vo 09 ST svu SCH p zlu 9 4 vio 2 saw ea Li 880 65 ed gA Z d Szu oD 65H jv vvu Zi iza er obtu Po glo van vd 92HO LT suo SC 82 E ZA Z 4 vid Sd seu r evu f ozu ey dll Vi zio Baw rd SZHO EF tuo vi LI er LA 2 4 ely S 3 su YI pa vzu es vile vr LLO 9 3 zan za FEH IEN ego z 95 g a ES Zid pa 9su y ovu v oiu vf oto vo taw z a SZHO om zHo Z SD zd 984 ty 91 sen ti sey zzy er eu vr eo s 3 za a zzyo vl ozo t I vo ba sgu va ou sl peu Seu tr eu ET gH go v a ia fea iyo lg eio zr EE yey PH 89H s zSu Z 904 ozs zA y el zo vo isi vi 8192 ED 812 sm za zra g8u amp L9H v EA LSet it soy Zi 619 ZA 98 vo LILA vr sigo 9 43 6 5 ZA 90 LI 307 Sisaq 5941 9is30 207 9 is3q 901 sisaa 903 9930 30 539 901 9is3a 901 91830 907 ssaa 901 91530 91s30 diao 338 digo 338 O amo 33H q
42. at some location on the screen Fire a single shot test signal with INTENSITY and PERSISTENCE fully cw and WRITING SPEED in STD and if the center brightness is low wait for one to three minutes for the low brightness area to become brighter Likewise if the entire display bright ness appears below a usable level or the display is not visible at all wait for one to five minutes for the display to appear figures 3 8 and 3 9 3 7 3 8 Model 141T Theory SECTION IV PRINCIPLES OF OPERATION 4 1 INTRODUCTION 4 2 This section contains functional descriptions keyed to an overall block diagram of the instrument and circuit descriptions keyed to simplified block dia grams of circuit groups The schematics are located in Section VIII 4 3 OVERALL FUNCTIONAL DESCRIP TION 4 4 The Model 141T Display Section has five main circuits figure 4 1 low voltage power supply high voltage power supply calibrator circuit pulse circuit and horizontal driver circuit The horizontal and vertical amplifier circuits are in the plug in units 4 5 LOW VOLTAGE POWER SUPPLY 4 6 The low voltage power supply operates on 100 120 220 or 240 volts single phase 48 440 Hz Out put voltages are 12 6 100 100 and 248 volts de AH outputs are fused and electronically regulated sa CALIBRATOR Voltages are distributed to the high voltage power supply calibrator pulse circuits an
43. circuit for opens or shorts Then lift one lead of A2C13 A2C14 A2C15 A2C16 A2C17 A2C18 and turn instrument on again Voltage is not more negative than 2 volts Voltage is not approxi mately 0 6 volts Oscillations occur Oscillations do not occur Check A2014 and A2015 Check A2013 Replace capacitor leads one at a time until oscillations stop The capacitor that stops oscillations is defective Trouble probably with transformer A2T1 Table 8 2 Troubleshooting High Voltage Supply Incorrect Voltage Voltage too high a Lift one lead of A2R58 Replace A2R58 lead and lift one lead of A2R56 Replace A2R56 lead and compare voltages at gate and source of A2015 Voltage too low a Compare voltages at gate and source of A2015 Check voltage at emitter of A2014 Steps a and b do not correct fault Qutput drops to zero Output remains at incorrect value Output drops Qutput remains at incorrect value Voltages are within 1 volt of being the same Gate voltage more negative Gate voltage more positive Voltage approx 12 volts Voltage remains too low Check A2015 A2013 or A2014 is leaky Replace A2R56 with a resistor of approx twice the present value Proceed to step 1 c Trouble probably in divider network A2R61 A2R62 A2R63 R6 A2R73 thru A2R81 Trouble probably in divider network A2R61 A2R62 R6 A2R73 thru A2R81 Check A2014 and A
44. near center of adjustment range 5 14 CALIBRATOR a Perform preliminary setup paragraph 5 8 b Connect voltmeter calibrator to vertical in put c Set voltmeter calibrator for output of LV p p d Set vertical amplifier sensitivity to 1 V div e Adjust vertical vernier to display exactly 8 divisions of vertical deflection f Disconnect voltmeter calibrator g Connect Model 141T CAL 1V output to verti cal input h Observe deflection of 8 20 1 division i Repeat steps a through g using 10 volts from the voltmeter calibrator 1 V div vertical sensitivity and CAL 10V 5 15 VARIABLE PERSISTENCE a Perform preliminary setup paragraph 5 8 b Adjust INTENSITY for normal viewing level c Set time base to 2 sec div and observe that trace line disappears and that spot develops a short tail d Slowly adjust PERSISTENCE cw and note that tail lengthens e Rotate PERSISTENCE fully cw and turn IN TENSITY fully ccw f Observe that trace remains visible for one minute 5 16 WRITING SPEED FAST a Perform preliminary setup paragraph 5 8 b Set PERSISTENCE to MAX c Set time base for usec div sweep d Set time base for single sweep Model 141T o e Press FAST pushbutton and press ERASE Observe that background appears foggy f Repeatedly erase and trigger a single sweep increasing INTENSITY slightly each time until trace writes and remains visible for 15 seconds 5 17 STORE TIME FA
45. of Hlustrations List of T ables Title Page Replaceable Parts 6 2 List of Manufacturer s Codes 6 9 Manual Changes 7 1 Option 009 Repiaceable Parts 7 4 Troubleshooting High voltage Supply No Voltage 8 5 Troubleshooting High voltage Supply Incorrect Voltage 8 5 Schematic Diagram Notes mad 8 7 General Information 1 0 TS s PM Figure 1 1 Model 141T Display Section Model 141T 141T R 14 Model 141T General Information SECTION I GENERAL INFORMATION 1 1 INTRODUCTION 1 2 This manual provides operating and service in formation for the Hewlett Packard Model 141T Dis play Section figure 1 1 The manual is divided into eight sections each covering a specific topic or as pect of the instrument All schematics are located at the rear of the manual and can be unfolded and used for reference while reading any part of the manual 1 3 This section contains a description of the Model 141T The instrument specifications are listed in table 1 1 Table 1 2 lists and describes the abbre viations used in this manual except Section VI The parts list is a computer printout and uses computer supplhed abbreviations Table 1 3 contains a list of current plug ins available for use with the Model 1411 1 4 DESCRIPTION 15 The Model 141T is designed for use as a
46. plug ins 3 17 The Model 141T also accepts Model 1400 series plug ins for standard oscilloscope use When standard 1400 series oscilloscope plug ins are used plug in shield HP Part No 00140 0601 must also be used Order the shield from the nearest HP Sales Service Office Do not operate instrument above 45 C when using real time plug ins 3 1 Operation 3 2 4 5 6 78910 1112 13 TRACE ALIGN Adjustment to set trace par allel to horizontal graticule lines ASTIG Adjustment to set roundness of CRT beam LINE ON position connects ac power to oscilloscope and lights indicator STORE Retains displayed signal at reduced intensity for viewing at a later time TIME Control for setting storage time length FAST Operates CRT at maximum writing speed with variable persistence PERSISTENCE Controls endurance time of displayed signal 10 ib 12 13 14 Model 1417 STD Operates CRT at normal writing speed with variable persistence ERASE Removes stored or written displays INTENSITY Control for setting intensity of CRT display CONV Selects operation as standard os cilloscope FOCUS Control for focusing beam on CRT BEAM FINDER Returns beam to CRT screen regardless of deflection potentials when used with 1400 series time domain plug ins When used with 8550 series freguency domain plug ins the BEAM FINDER pushbutton has no function CAL 1 volt and 10 volt p p cali
47. scope ready to record immediately after erasure WRITING SPEED PHOTOGRAPHIC Conventional operation using a HP Model 197A camera with f 1 9 lens and Polaroid 3000 speed film 100 div usec WRITING SPEED Storage Standard Mode greater than 20 div ms Fast Mode greater than 1 div usec 1 2 STORAGE TIME Standard Writing Speed more than two hours at reduced brightness typically four hours Traces may be viewed at maximum brightness for more than one minute Fast Writing Speed traces may be stored at reduced brightness for more than 15 minutes typically 30 minutes or stored at maximum brightness for more than 15 seconds Brightness 100 foot lamberts in standard mode CALIBRATOR Type Line frequency rectangular signal approximately 0 5 usec rise time Voltage Two outputs 1 volt and 10 volts peak to peak 1 from 15 C to 35 C 3 from 0 C to 55 C BEAM FINDER Pressing BEAM FINDER pushbutton brings trace on screen regardless of setting of horizontal or vertical position controls GENERAL Power Requirements 100 120 220 or 240 volts 5 to 10 48 to 66 Hz Option H16 48 to 440 Hz normally less than 285 watts varies with plug in units Dimensions NOTE DMENSIONS H sNCHES AND EMIL LIME TERS ID EGA RACA HEIGHT DNCE UDING Fi ER STRIPE FOR CAg NET HEIGHT NG vum FEET ADD 18 TO FIA RACK WEIGHT H REAR APRON RECESS Le UU is ad di REAR m Weight
48. the switch to EXT and connect the modulation signal to the terminals The amplitude of the pulse required to blank the trace depends on the front panel IN TENSITY control setting and is approximately 20 volts positive for normal intensity settings When not using external modulation set the switch to INT 3 13 PLUG IN UNITS 3 14 Available plug ins for the Model 141T are listed in table 1 2 This instrument is normally operated with an RF section plug in in the upper compartment and IF section plug in in the lower compartment The Operating and Service Manuals for the plug in units contain detailed information for installing plug ins 3 15 Arrangement of plugins can be selected to suit special applications For example a vertical amplifier and time base plug in can be reversed so that sweep is vertical and signal deflection is hori zontal A vertical plug in can be used in each com partment to take X Y measurements 3 16 Double sized plug ins such as the Model 1415A and Model 1416A can be inserted into the instru ment after removal of the divider shield between lower and upper compartments Blank plug ins both single and double size are available for customer fabrication of specialized vertical amplifier and time base plug ins Refer to table 4 1 for power supply current limitations NOTE For proper operation the divider shield must be in place when using standard size plug ins does not apply to spectrum analyzer
49. the schematic 8 4 Model 1417 8 51 Excessive ripple in line frequency is usually caused by a faulty input filter or regulator circuit Compare the ripple voltages at the rectifier outputs with values given on the schematic For ripple above the specified value check C1 C3 C4 or C6 Line frequency ripple above specified value at these points indicates an open rectifier or low gain amplifier transistors Maximum ripple on supply outputs at 115 Vac with maximum load on supply is 10 mV at 248V 7 mV at 100V and 100V and 2 mV at 12 6V 8 52 If the 12 6 100 or 248 volt supply should be accidentally shorted to ground the fuse for that particular supply will blow This cuts off current in the supply and protects the transistors 8 53 The 12 6 volt supply is fused and employs a current limiter A2Q10 for protection against brief shortings of the output to ground The supply should function normally upon removal of the short pro vided the fuse has not blown 8 54 Trouble in the 100 volt supply can be re flected in the operation of all other low voltage power supply outputs If the 100 volt supply is incorrect proper circuit repair may eliminate the trouble If the 4100 volt supply is correct follow these steps in their given order a Check 100 volt supply The 248 volt and 12 6 volt supplies are referenced to this supply A fault in 100 volt supply can cause malfunction of
50. whether FAST or STD mode is being used This current pulse is amplified and converted to a voltage pulse by A5Q7 A5Q8 and applied to the stor age mesh backing electrode 4 48 Erase Timer The erase timer circuits are in a quiescent state during operation in either STD or FAST write modes When erase timer A5Q9 is turned off A5CR8 in the erase pulse shaping circuit is back biased This effectively disconnects the erase timer cir cuit from the output pulser 4 49 When operating in the STD mode at the instant the ERASE pushbutton is pressed figure 4 5 point A the following actions take place simultaneously 4 5 Theory a The collector mesh potential of 1156 volts is applied to the junction of A5R27 and A5R28 This volt age causes A5CR14 to become reverse biased which protects A5Q7 and A508 b The 156 volts applied to A5R27 turns A5Q9 on which charges A5C8 to 0 volts This action turns on A5Q15 A5Q16 through A5R53 which blanks the CRT write gun by means of a relay closure on the high voltage power supply board e Zero volts on A5R17 reduces the output of amplifier A5Q7 A5Q8 by approximately 12 volts A5Q18 turns on turning A5Q19 off A5Q3 is turned on by current through A5R7 which allows amplifier A5Q7 A5Q8 to reach its full output amplitude less the reduction in amplitude due to the current through A5R17 The result is approximately 4 volts The erase multivibrator A5Q20 A5Q21 begins to free run at approxima
51. wiv working inverse ood E farad s ms millisecond rf radio frequency voltage 3 70 1 3 General Information FUNCTION VERTICAL PLUG INS TIME BASE PLUG INS SPECTRUM ANALYZER PLUG INS D Model i41T Tabie 1 3 Plug ins for Mode 1411 Display Section HP MODEL NUMBER Time Domain Reflectometry 1 4 Wide Band CAPABILITIES Frequency Swept Wide Band TDR Sampling High Gain Differentia Dual Trace Four Trace Algebraic Addition Fixed or variable scan spectrum analysis Spectrum analyzer 1F section 50 Hz bandwidth Spectrum analyzer IF section 10 Hz bandwidth Spectrum analyzer RF section 1 kHz to 110 MHz Spectrum analyzer RF section 100 kHz to 1250 MHz Spectrum analyzer RF section 10 MHz to 40 GHz Spectrum analyzer LF section 20 Hz to 300 kHz Model 141T Installation SECTION H INSTALLATION 2 1 INTRODUCTION 2 2 This section contains instructions for performing an initial inspection of the Model 141T Installation procedures and precautions are presented in step by step order The procedures for making a claim for warranty repairs and for repacking the instrument for shipment are also described in this section 2 3 INITIAL INSPECTION 2 4 The instrument was inspected mechanically and electrically before shipment Upon receipt inspect it for damage that may have occurred in transit Check for broken knobs bent or broken connectors and dents or scr
52. 0 AN Aap09m 130109 Was HO BACI vanos y V WER Od HLA S9u05g 2901 MS 06841 Pong suaanp uK0yoo3g ELE C9G Qs XML MPE 2061 ISCL PbZ 209 wi S sHunsnouexyen S149 48V 109 491 NODJHO 09095 5892 102 Ri 9620 909 i219 el 5202 S9v G14 XML a SOS UPON AQ Erd ama 61158 AKO MUT HSS 2010 P SNURJEJ emer ELLSS SHIADSOH 1699 696 POZI 291 19 HOLDEN 3 199nS 1524 DLE UBOS OILZ 2389 00 48 XML LUDY ugeneuuegy BAY 10H N OOP 9611 087 DE8 MJ 2690 UBABH MON YNOZ IWY MYER 0020 1L SOP 21 AUS MOA MON YLOSSNNIN 006 28 Uie BL BAHG ieu zt 1802 206 602 ELEL Aug meng EREM betr saa can DECH Siodsumput 1602123NN02 REAA a WA POT KOG 0 aay PUESP YS WICH LOCZ SC tae uua 39 1 28 80 Pi i Loggt zis BL YHOHVINO 056i 96y 81S 81 D0r9 9 p ed BL VNVIONI Cen 1686 181 DZ verk Te 32291 ofuauv ves WEE ZOB SH WE 91108 poomolsua any fame My 822 L geg bd Jn dun nuQ HDI OSZY ee EEEZ B9y BL 4 sie qino KUO RIMA SY PIREJ wama SIE peoy jounin AHG GOZ Ltr pig gaj awe Uonewojny 9 NYONO D ser S eme i qinos 9099 k DEET EXAM Sot SAQUINOS f y oavgo05 POCO S2 0 B XML k6Sp 308 0 at ZORGE aamun 02y Kog Od 3 5 Augen 0528 YAYA VITO SALVLS QALINN S301440 32IAH3S Y SITVS LIGTMAH 61 8 IDULIYIS PNI 9577 91 8 MNGU 52 90 V 2 0 ditl iinod o ASTINd ilvi A A ee I si b zio 310 83131 1d E MC SE
53. 0 MA 30 WV A2CRI 1901 9040 DIO E SILICON 50 MA 30 wy AZCRLI 1901 0040 DIGDE SILICON 20 MA 30 WV A2CR14 1901 0049 D ODE SILICON 50 MA 30 A2C815 1901 0026 DIUDESSILICON 0 758 203PIV AZCR16 1901 0025 D ODE SELICON LOOMA IY A2CR17 1910 0016 DEGDESGE 60 B2CKLE 1901 9040 DIODESSILICON 50 M 30 amp 2CR19 1912 0906 DIODE TUNNELIGSERMANIUM ALCRZ1 1901 0040 DIGDE SILICON 50 MA 30 i A2CR22 1901 0049 DIODE SILICON 50PIV AeCR23 1901 0341 DIODE SI 7000 PIV SOKA A2CR24 1901 9341 DIGOE SI 7000 PIV SOMA A2CR25 1901 0040 DIODE SILICON 50 MA 30 A2CR26 1901 0436 DIODE SELICON 1600 PIV AZCRZ 1901 0436 DIDOE SILICON 1600 PIV AZCRZE 1901 0029 OIODE SILICON 600 PIV AZFI 2110 0067 FUSE 0 30A 250V AZE 2110 0033 FUSE 0 75A 250V A F3 2110 0012 FUSE20 5 AMP 250V A2F4 2110 0023 FUSE CARTRIDGE 3 AMP 3 AG A2K RELAY CONSISTS OF A2K1L1 0490 0191 COIL RELAY 600 OHM NOM 12V VE A2K1S1 0490 0189 RELAY REED SPST 9140 9171 COLLSFXG 40 UH 102 l A2L2 9140 0210 COIL FXD RF 100 UH 5 0340 0451 WASHER INSULATED YRANSISTOR A2MP2 2110 0269 CLIP IFUSE 0 250 DIA See introduction to this section for ordering information 6 4 Model 141T Mfr Part Number 00141 65515 33C17A 33C17A 33C17A 5813589 SR1358 9 SR1358 9 SR1358 9 SR1358 9 SR1358 9 SRI358 9 581358 9 SK1358 9 SK1358 G SR1358 9 311338 9 00141 66519 192 10492 P15 192P10492 PTS 192P10492 PTS 1500475X903582 DYS 33C17A 1
54. 00 1 Maximum Voltage 4 KV Waveform Sine Wave Frequency 80 Hz to 400 kHz 5 5 PERFORMANCE CHECK 5 6 The following subparagraphs describe pro cedures to determine whether or not the instrument is operating within the specifications of table 1 1 This check can be used as part of an incoming inspection as a periodic operational test or to check calibration after repairs or adjustments have been made Any one of the following checks can be made separately if desired 5 7 The first time the performance check is made enter the results on the performance check record at the end of the procedure Remove the record from the manual and file it for future reference Be sure to include the instrument serial number on the record for identification 5 8 PRELIMINARY SETUP a Install time base and vertical plug ins b Adjust time base for a free running 1 msec div sweep Required For Characteristics Required Adjustment Low Voltage Power Supply Adjustment High Voltage Power Supply Adjustment High Voltage Power Supply Adjustment Geometry Adjustment Pulse Circuit Adjustment Performance Check c Set vertical plug m input switch to off or ground d Set Model 141T controls as follows INTENSITY EE EE MIN PERSISTENCE MIN WRITING SPEED STD e Turn instrument on and allow a 15 minute warm up period
55. 0436 A2R26 0757 0846 Hat MET FLM 22 1K UM 1 0 1 24 0757 0846 A2R27 0687 5531 R FXD COMP SGK OHM 10 L 2w EB 5631 AZR2B 0687 5631 R FXD COMP 56K GHM 10Z 1 25 EB 5631 A2R23 0684 1021 R FXD COMP 1000 UHM 10 1 4W CA 1021 A2 30 0757 0399 R FXD MET FLM 82 5 OHM 12 1 W 0757 0399 A2R31 0757 0310 R FXD MET F LM 49 9K OHM 1 0 1 2W 0757 0370 A2R31 AND A2R35 MUST BE REPLACED AS A SET FOR PROPER RESU TS A2R32 0757 0712 RIEXD MET FLM 68 1K OHM 1 1 4w 0751 0112 A2R33 0757 0388 R FXD FLM 30 1 OHM LZ 1 8W 0757 0388 A2R34 0757 0436 RIFXD MET FLM 4 32K OHM i BW 0757 0436 A2R35 0757 0044 R FXD MET FLM 33 2K OHM 1 1 2W 0757 0044 A2R31 AND A2R35 MUST BE REPLACED AS A SET FOR PROPER RESULTS A2R36 5757 0744 R3FXD FEM 34 2K OHM 1 1 40 0757 076 A2R38 0721 0431 RIFXO DEPC 2 69K OHM 1X 1 2 0727 0431 A2R39 0757 4846 R FXD MET FLM 22 1K OHM 1 08 1 26 0757 0846 A2RA4Q 0687 2221 R FXD CUMP 2200 OHH 10 1 28 ER 2221 A2R41 0687 4731 R FXD COMP 47K OHM 10 172 ER 4731 A2R43 0757 0846 R FXD MET FLM 22 1K OHM 1 0 1 2 0757 0846 AZR44 0757 0190 RiFXD MET FLM 20K OHM 1 i 2W 0751 0190 A2R45 0757 0480 RsFXO FLM 432K OHM 1 1 8W 0757 0680 A2R46 0757 0388 RiFXD FEM 30 1 OHM LE 1 9N 0757 0388 4214 2100 1588 R VAR COMP 2 X 1 5K GHM 30 LIN l 4W 2100 1588 A2R48 0757 0273 R FXD MET FLM 3 01K OHM 12 1784 0751 02 13 2849 0811 1746 R FXD wh 0 36 OHM 5 24 0811 1746 A2R50 0757 0421 RIFXD MET FLM 825 OHM 13 BW 0757 0421 A2R51 0757 0428 R FXD MET FLM l b2K UHM 1 L BW
56. 0736 z FRAME ASSY 28480 5060 0736 Mp3 30141 60205 1 PANEL FRONT 28480 00141 60205 PS 50560 0222 2 HANOLE ASSY 5H SIDE 28480 5060 0222 MPE 5069 8735 2 RETAINER HANDLE ASSY OL EVE GRAYISTO 28680 5060 8735 MPS 5060 0757 5 FOOT ASSY FM 28650 5060 0767 MPi4 5000 8727 2 SIDE COVER 2344809 5000 8727 MP16 5060 8589 1 COVER ASSY TOP 16LIG IVE GRAY 28480 5060 8589 MPIT 5060 8713 1 BOTTOM COVER ASSY FMIMINT GRAY 28480 5060 8713 MPLS 00141 60206 1 PANEL ASSY REAR 28480 00141 50206 MPZ 00140 24710 1 TOP PANEL SUPPORT 28480 96140 24710 4P23 00140 24 711 1 BOTTOM PANEL SUPPORT 28480 00140 24711 MP24 06141 67401 1 KNGBIPUSHBUTTON ERASE 28480 00151 67401 MP25 00141 67402 1 KNOBz PUSHBUTTON FAST 28480 00141 67402 MPZE 00141 67403 i KNOBZPUSNBUSTON CONV 28480 00141 67403 L EN 08 41 67404 1 KNOB PUSHBUTTON STORE 28480 00141 67404 kPZE 00141 67405 1 KNOS z PUSHBUTTON STANDARD 23480 00 1416 7405 Mp29 90141 67406 i KNOB PUSHBUTTON BEAM 28450 00141 57406 MP30 0370 0084 4 KNOB ROUND BLK 5 8 DIA 28480 0370 0084 INTENSITY TIME FOCUS PERSISTENCE MP34 0360 0015 2 BOARD TERMINAL 76530 332 14 93 011 MP37 1200 4037 1 SOCKETICRT 14 CONTACT 28480 1200 0037 MP38 1200 0044 4 INSULATOR TSTR MOUNTING TO 3 INCLUDES 71785 293011 SOCKET TRANSISTOR MP42 1200 0086 4 INSUL ATGR DIODE 74785 293201 MP46 1200 0408 L CGYER CRT SOCKET 28480 1200 0408 MP4 5020 0476 L BELELICRT 28490 5020 0476 KPAH 5040 0440 1 COVER CRT SOCKET 28480 5040 0440 MP4S 5040 0508 L SHIELD
57. 1 X619 obu I 2 i 2249 UOLYWIY100A09 er o UG je 2 uv 49 NN990014 OL j s A UZ 0189 NNS DA i anzz 7022 A Tao Kano ieu 099 asza t t p 92 GEM A9 Z1 4A8 1 700 i ep Up 01D YZWIL AHOMW3N JAS 21 3Svu3 Q1S LSVJ 4 001 801Y8431300V Te NNS 20034 so ASAP dAD ZE s z e ZA f A z ER DES i do T x 9 910 ep ka 29 meo ss 3022 WU LINDI ist Zeg ko ONDINY 18 10014 ga lt 081 S282 NS le I ogy 6S4 HOlOd3lOHd I 100 ne lN3ISNVML Ka 2182 4192 asz ONIXNY18 lt Z Inzv 626 30041933 O NIMIVG HSIN 0022 39YH01S 824 1399 Q HS O d alsog BH i 9310 HHD gt 4 ad 40 A Ba la b a JS 1d rzy f KJ iNdino 40 3A9 21 1 NYJE Er 95 e 188 o o f o O O O 41S a 36 E i 5 ACO Aso qiso d e v ese mu 3SVN3 EP S Nig O Q Les sve E obo ADO lt an 9 Nid lt SS ue am d S 80123717102 OL ABSI 206 po 921AJ9G ZUA IHA x AO01 Astal A9 21 i VYA I SIHOSY amp 64HGV 82H GV ESEGV WS 0047 913 i e pHSV ZvHGV OvHGV 948 Siu 00 je 6291 10313130 e Z Ag on 4721 KAL 48VH3 HO i E L1 99 29 092v Sp bb th een _ De 2 A9 e 00 740 180 498 t 202 12 610 T
58. 180 1735 A5C17 0150 0052 C FXD CER 0 05 UF 20 400VDCW 33017A DIODE SKLICGN 50 MA JO V FDG1088 ASCAL 1901 0040 A5CF2 19981 0040 DIODE SILICON 50 HA 30 WY fbG1058 ABCRA 1541 9040 DIOGDE SILICON 50 MA 30 wy F0G1088 FDG1088 AS5CR 1931 0040 DIODETSEILICUN 50 MA 30 amp V ASTRS 1901 0040 DISOE SILICON 50 MA 30 HY FOGLOBS ASC 6 1901 0940 DIGDE SILICON 50 MA 30 WY F061088 ASER 1901 6040 DIOOE SELICON 50 MA 30 wy FD6G 1088 A5CK 1901 0040 DIODE SILICON 50 MA 30 MM FDG1088 ASCRS 13501 0040 DIGUDE SILICON 50 MA 30 wy F0G1088 AS REG 1401 0040 DIODEISILICON 50 MA 30 wy FDG1088 ASCRII 1501 0040 DIODE SILICON 30 M 30 wy FDG2088 ASCRI 1501 0033 DIUD S I ICUN LOOMA 18I V FD3369 ASCRII 1901 0034 DIRODEZSI ICUN 100MA lLadav 03369 R1358 9 ASCRIS 1901 0028 DIDOR S LICON 0 754 40IPIV See introduction to this section for ordering information 6 6 Model 141T Table 6 2 Replaceable Parts Cont d Reference up part Number Qty Description Designation A5CR15 NOT ASSIGNED ASCRLE 1901 9040 DIUDE SILICON 30 AS5CKE 1901 0040 DIJOE SIL CUN 5 30 AS RIB 1901 0040 DIGDEZSILICON 30 ASCRIS i90i 0040 DIOGDE SILICON 39 A5CR20 1901 0040 DIODE SILICON 30 A5CR21 1901 0040 DIODESSILECON 30 A5CR22 1901 0040 DIODE SILICUN 30 A5CR23 1301 0040 DIGDE SILICON 30 ASCRZ4 1901 0040 BIGDE SILILON 30 A5C825 1901 0040 DIGDE
59. 20 HUUG Ed Deet Suad ege yO Bol MAGULI YANINA 34123 3 0 os 1 1901394 BS unus 0009 G Gp 099 Yotysod RI 3890809813 ZIEstUGZYGAL SI Heug Pre Haat ANAJN 143933 NYABAS PPLSCH KRL ft v 15 02 al IRT 0008S 3 ev Ge ERAN SH3QNYd SHNJHAAN 2089 GALS 2901 BISOSIN A2 ZSEE Og Dd 9 sojnodolax 9 souo 219 gi SoA SNUdA 3NVUSIME E iZ DOR puegsuaacn 1905 WA t pg vtO GOES PEO MRI UPORA ales SEO ayy WE Ag ANAIA 8815 MOYAMIH 2680 k1068 9j Hm CZ SE ASI Wi weii 138 Sp PEJE 3Z160t2 og i8Y4 MOVAAJIH 359 Z 9t 66 Pi SOLE ODOT Ka Aa 35 anay stacey PUBY 7 2 d 4b 4917 Ma i KIWA H2XdAM 902 S 24 68 9 amine Eyre 2 02 4 AULA s RIS Ap edi3uud Booey Bieuli gy MAB BILEH PIERDE Mae ej pp 99i ai Sy MA me Br 98 18 Qoi ti PETAMI AM m Ze amed A UIE p s po K Sing NIRO Wet 31087 De 22 249 WA BL sassnig di upe 5ee Lac i URA 505 20 BRUJAV ANS xajausq DIEYIEd 1iaHAa H Krista twedwal Z66 Kaja tuva DEJ Z 12 91 S 12229 li BUUMA GOEY 08 Od EZG gespent H Guri y DIENTE d 12 3H VIHL RY 3dOufn3 0009 197 123 181 42047 MOPRNOH DOL SAS BAG AASI DOCS 8016 OG KRMI itti RE
60. 2015 Replace A2R57 with a 560 ohm resistor Perform troubleshooting procedure of Table 8 1 Service probably a defective component im the rectifier filter divider networks If no waveform appears use table 8 1 8 58 If the high voltage output is incorrect and can not be adjusted to the correct value use table 8 2 8 59 H the 2350 volt supply seems to be opera ting properly the 6 6 kV post accelerator potential may be checked as follows a Remove top and left side instrument cover b Remove high voltage connector block A3 MP1 figure 6 4 c Remove high voltage connector block cover and rubber insulation d Check 6 6 kV at high voltage lead pin con nection 8 6 Model 141T 8 60 PULSE CIRCUIT 8 61 A good knowledge of the operating procedures ze and an understanding of the principles of operation of the instrument are helpful when troubleshooting the pulse circuit Refer to Section TH for operating procedures and Section IV for principles of operation Always perform the preliminary set up procedure given in ection V Performance Check if the instru ment is not operating properly 8 62 All de voltages from the low voltage supply are used in the pulse circuit When a malfunction occurs check all voltages connected to the pulse circuit board If all low voltages are correct check the high voltages at the high voltage circuit board These checks will by elimination isolate
61. 204 75231 i3201 85008 10801 9 amp 040 9 105 10802 53216 91247 06010 53017 90031 53201 52905 50640 19144 16512 07753 60016 91746 11101 20006 15801 60630 11207 60646 02703 11590 47003 07111 6 9 Replaceable Parts Model 141T 141T A 1 06 76 Figure 6 1 Cabinet Parts Exploded View Model 141T HFR NO 00000 01121 01295 03508 94713 06540 07263 08718 14655 26365 27191 23480 56289 58474 71400 71468 71590 71707 71744 74785 72825 72982 74276 75915 76530 79136 80131 82142 82389 83330 31418 91586 92702 35348 3971464 Table 6 3 List of Manufacturers Codes MANUFACTURER NAME NO M F DESCRIPTION FOR THIS MFG NUMBER U S A COMMON ALLEN BRADLEY CO TEXAS INSTRUMENTS INC SEMICONDUCTOR COMPONENTS DIV G E CO SEMICONDUCTOR PROD DEPT MOTOROLA SEMICONDUCTOR PROD IN AMATOM ELECT HARDWARE CG INC FAIRCHILO CAMERA amp INST CORP SEMICONDUCTOR DIV NO M F DESCRIPTION FOR THES MFG NUMBER CORNELL OUBLIER FLEC amp DIV FEDERAL PAL EIC ELEGU GRILS REPRODUCER CORP CUTLER HAMMER INC POWER DIST amp CONTROL DIV HEWLETT PACKARD CO CORPORATE HQ SPRAGUE ELECTRIC C3 SUPERIOR ELECTRIC CO THE BUSSMANN MFG DIV MC GRAW EDISON CO ITT CANNON ELECT INC GLOBE UNION INC CENTRALAB DIV COTO COIL CO INC CHICAGO MINIATURE LAMP WORKS CINCH MFG CO DIV TRW INC EBY HUGH H INC ERIE FECHNOLOGICAL PROD INC SEGNAL ETE INC LITTELFUSE INC CINCH MONADNO
62. 250V SLOW BLOW Mfr Code 71400 Mfr Part Number MDX 2A Add FL1 HP Part Number 9100 3173 Qty 1 FILTER LINE 230 VAC 10 50 60 Hz Mfr Code 56289 Mfr Part Number JN10 2270A Add J3 HP Part Number 1251 2357 Qty 1 CON NECTOR POWER 3 PIN MALE Mfr Code 82389 Mfr Part Number EAC 301 MP18 Change to HP Part Number 00141 60203 Qty 1 PANEL ASSY REAR Mfr Code 28480 Mfr Part Number 00141 60203 Add S2 HP Part Number 3101 1234 Qty 1 SWITCH SLIDE 115 230V DPDT Mir Code 82389 Mfr Part Number 11A 1242A TI Change to HP Part Number 9100 0184 Qty 1 TRANSFORMER POWER Mfr Code 28480 Mfr Part Number 9100 0184 Mode 141T W1 Change to HP Part Number 8120 1545 Qty 1 CABLE ASSY AC POWER CORD 7 5 FT Mfr Code 70903 Mfr Part Number KH 7171 W2 Change to HP Part Number 00141 61621 Qty 1 CABLE MAIN Mfr Code 28480 Mfr Part Number 00141 61621 Delete A2C20 Delete A7 A7E1 A7F1 Figure 8 10 Replace power input line voltage section with figure 7 3 Delete C20 between CR17 plate and ground CHANGE 9 Table 6 2 MP97 Change to HP Part Number 01200 44703 CHANGE 10 Table 6 2 Add A5CR15 HP Part Number 1901 0033 Qty 1 DIODE SILICON 100 MA 180 WV Mfr Code 07263 Mfr Part Number FD3369 Delete A5R81 Figure 8 16 Replace A5R81 with A5CR15 wi A izi m re u P O Al 98 908 oer e ORS SUF i s Be 918 2 gon IA GT o
63. 3 3 1 Model 141T Controls and 7 1 Component Identification Pulse Connectors coo rere bx n 3 2 Cirit AD oenar WAA 7 5 3 2 Intensity Adjustment 3 3 7 2 Pulse Circuit Sehematic 7 5 3 3 Background Illumination immediately 7 3 Line Voltage Schematic 7 6 after erasing with WRITING SPEED 7 4 Option 009 Schematic Diagram 7 6 im FAST and PERSISTENCE to 7 5 Pulse Circuit Schematic 7 7 MAX ZZ RZESZ 85 7 6 Line Voltage Schematic 7 8 gt s a eM 35 8 1 Semiconductor Terminal Identi 3 5 Single shot Trace Bloom caused by fication elite ee uude 8 3 INTENSITY and or PERSISTENCE 8 2 Component Location Top View 8 8 set too high SUM 35 83 Component Location Bottom 3 6 Singleshot Display with INTEN View 89 SITY and PERSISTENCE set the 84 Component Location Front same as figure 3 5 and Increased View SES SZ 8 10 Amplitude 85 8 5 Component Location Rear View 8 12 3 7 Fade Positive after 2 to 4 minutes 8 6 Plug in Jack Connections T 8 13 in STD mode 3 6 8 7 Auxiliary A and Auxiliary B Wiring 3 8 Single shot 20 usec div display 3 6 Diagram EEN 8 13 3 9 Same Display as Figure 3 8 after 8 8 Component Identification Power three minutes in STD mode 3 6 Supply A2 E E AA
64. 4318 2014 1553 0034 1 TSTRISI PNPESELECTED FROM 2N3251 1553 003 42015 1855 9057 1 TSTREST FET N CHANNEL 1855 6057 AZRI 0687 1041 i R FXD COMP LOOK OHM 10 1 2W ER 1041 A2R2 0764 0033 1 R FXD MET OX 33 OHM 5 2W 0764 0033 A2R3 0761 0007 1 R FKD MET OX 27K OHM SE iW 0151 0007 A2RA 0584 1021 9 R FXD COMP 1000 OHM 107 L 4W CB 1021 4265 0583 1015 1 R FXD COMP LOG OHM 5 1 4k CB 1015 AZRG 0757 0044 2 R FXD MET FLM 33 2K OHM 12 1 29 0757 0044 A2R 9757 0 01 6 R FXD MET FLM LOG OHM i 1 8W 0757 0401 4288 0757 0273 2 R FXD MET FLM 3 01K OHM i L 8W 0757 0273 6289 0757 0465 2 R FXU MET FLM OOK OHM IZ 1 8W 0757 0455 A2R10 0757 0370 2 R FXD MET FLM 49 9K GHM 1 0 1 2W 0757 0370 AZRLI 2100 1589 1 R VAR COMP TK 3K 5K OHM 20 LEN 1 4s 2100 1589 A2R12 0757 0367 2 R FXD MET FLM 200K OHM 1 1 29 0757 0367 A2RI3 0757 0401 RIFXD MET FLM LOG GHM iZ i 8W 0757 0401 A2R14 0766 0033 1 RIFXD MET FEM 2000 OHM 22 3H 0756 0033 A2R15 9757 0434 1 R FXO MET FLM 3 65K OHM 1 i W 0757 0434 A2816 0761 0006 i R FXD MET UX LOK CHM 52 lw 0761 0006 AZRIT 0687 5631 4 RIFXD COMP 56K GHA 104 L 2W EB 5631 A2RiB 0687 5631 R FXO COMP 56K OHM 10 1 2 EB 5631 A2R19 06894 1021 R FXD COMP 1000 OHM 10 1748 C8 1021 A2R20 0751 0399 R FXO MET FLA 82 5 OHM 17 is Bie 0751 0399 A2R21 0684 5621 REKO COMP 5 6K GHM 10 1 4W C8 5621 A2R22 0751 0164 R FXD FEM 33 2K OHM 12 1 48 0757 0764 A2R23 0757 0388 R FAD FLEM 30 1 DHA 1 1 8Ww 0757 0388 A2R2 amp 0757 0436 REXO MET FLM 4 32K OHM 1 1 8w 0757
65. 530 719136 80131 82142 82389 83330 91418 91505 92702 35348 97464 Table 6 3 List of Manufacturers Codes MANUFACTURER NAME NO M F DESCREPTION FOR U S A COMMON ALLEN BRADLEY CO TEXAS INSTRUMENTS INC Get CO SEMICONDUCTOR MOTOROLA SEMICONDUCTOR PROD INC AMATOM ELECT HARDWARE CO INC FAIRCHILO CAMERA amp INST CORP SEMICONDUCTOR DIN NO M F DESCRIPTION FOR THIS MFG NUMBER CORNELL DGBLIER FLECL OIV FEDERAL PAZSEICG ELECE GRIES REPRODUCER CORP CUTLER HAMMER INC POWER DIST E CONTROL DIY HEWLETT PACKARD CO CORPORATE HO SPRAGUE ELECTRIC CI SUPEREGR ELECTRIC CO THE BUSSMANN MFG DIV MC GRAW EDISON CO ITT CANNON ELECT INC GLOBE UNION INC CENTRALAB DIV COTO COIL CO INC CHICAGO MINIATURE LAMP WORKS CINCH MFG CO DIV TRW INC EBY HUGH Ha INC ERIE TECHNOLOGICAL PROD SIGNAL ITE INC LITTELFUSE INC CINCH MONADNOCK MILLS DIV WALDES KOMINGOR INC ELECTRONIC INDUSTRIES ASSOCIATION AIRCO SPEER ELECT COMP SWITCHCRAFT INC SMITH HERMAN Ha INC RADIO MATERIALS CO AUGAT INC MC MAGNETICS CORP GORODS CORP INDUSTRIAL RETAINING RING CO THES MFG NUMBER SEMICOND UC FOR PROD DEPT INC TRw INC COMPONENTS DIV CO ADDRESS ANY SUPPLIER OF u S A MILWAUKEE WES DALLAS TEX SYRACUSE N Y PHOENIX ARIZ NEW ROCHELLE MOUNTAIN VIEW NoYes CALIF EH RX Nado Nem ROCHELLE NGC MILWAUKEE WESC YOUR NEAREST HP OFFICE N ADAMS MASS BRISTOL
66. 6 Fiddle 106 i 931 luo TUR H i ERREI vu AB Si NId 2r 9 ir Seu rov i di AVILN3433310 I je i vo 0291 S VOLVIA SJINIS 8 z L i vb JUA EM erak E Zid HHO 0149 u tl ae NOLVYBITYJ Mise WA A2 28 JvAE 3 928 A 28 LL E SEU sy 000 Co Eug z Aool amp MO aug SD O 3n PIS ozet YN gosi 8 ansoso L veu an2 o es WILN3H43431Q 26 anog BND 92 oo T 28 sp 0281 I 26 826 i _ 70 A xX Rods Mddil 989 AOO AS 0 a 949 ZNid Zr Bir ZUA 2 a I f 26 20 ord o A001 i OO 00 1 82 pi De us 4001 MODI Nid Zr rav Ziy 68 ool CH ABb2 S SE lt m o lt ANO 0004 12 lei vii T nope ER 0106 A S6 a YIA Wy me A8t2 wee amo HOSN3S JAJA ALESAN OR CA 0001 o Prat HOLVINOJU SJIH sa ABZ mm NBY 2 m 100 la iz Id ZP er T 6 Mia T NE u 39V110A MOT ATddnS HAMOS Y ova IDIAJOS i ASSY 29019 iv Q d e gy LIAL po1uoziuogg UONDILNQUIPT 149400 402 EIN aunda S Vv BIpl pieoq aui jo epis datula woj Dui apos sjtusad stu s lou LUBUOJUJOD ubnojui pa ejd aney spigoq PNU PR el gt 00141 66502 i A we om REV B e 1 n uOLVINISO AE 39V110A HOH AtddiS HZMO FeV O d LIPI 9POMN 81 8 QV pnag espnq UOHBOHNIU
67. 60 9421 ASSYzPOWER MODULE 28480 5060 9421 Bi 3160 0252 1 FAN TUBE AXIAL il5V 50 60H2 w 32702 WS2107FL 570 Ci 0180 0154 1 CzFXD ELECT 430UF 100 10 250 0CW 56289 037361 62 0180 0042 1 C3FXD ELECT 2X20 UF 452V0CW 56289 032440 c3 0189 9046 1 LiFXD ELECT 600UF 200VDCW 56289 532569 C4 0150 0214 1 C FXO ELECT 275 UF 50 10 200vDCW 56289 D 36037 0FP 5 0189 0093 H C FXO ELECT 20U0F 150VD W 56289 D33193 C 0180 0213 1 C FXO ELECT 5000 UF 75 10 25V0Cw 56284 D39556 CE 1501 0032 2 DIODE SILICON 1N3209 04713 1N3209 CRZ 1901 0032 DIODESSILICON 183299 04713 1N3209 DSi 1450 0419 1 LIGHTIINDICATOR SELECTED NE 2H 28486 1450 0419 JE 1251 0054 2 CONNECTORIFEMALE 24 CONTACT 28450 1251 0054 2 1251 0054 CONNECTOR FEMALE 24 CONTALT 28480 1251 0054 43 1251 2357 i SOCKET 3 PIN MALE PUMER RECEPTACLE 82389 EAC 301 JA 1251 0202 2 CONNECTOR BANANA JACK 83330 2218 JE 1251 0202 CONNECTOR BANANA JACK 83330 2218 J6 1250 0083 1 CONNECTOR BNC 02660 31 221 1020 37 1510 0038 1 BINDING POST 28480 1510 0038 J8 1251 2366 1 CONNECTOR R AND P 8 POSITIONS 71468 DCM 8w8S J9 1251 2367 1 CONNECTOR amp P 8 INSERT POSITION 71468 DCM 8W8P 410 1251 1286 1 CONNECTOR R amp P 12 CONTACT FEMALE 71468 DCM 17W5S J10E1 1281 0180 3 INSERT R amp P CONNECTOR 08718 DM 53742 5001 D 1251 2214 1 CONNECTOR R amp P 12 CONTACT MALE 71785 DCM 17W5P 441461 1251 0179 3 INSERT R amp P CONNECTOR 71468 DM 53740 5001 ti 5066 0435 1 COILIA GNMENT Z AXIS 26480 5060 0435 MFI 5060
68. 75A 403JPIY A CRS 1901 0026 DIODE SILICON 0 75A 402PIV AICnio 1901 0028 BIUDEISILICON 0 754 403PIV AiCRiL 1901 9028 DIUDEISILICON 0 754 409P1V ALCRE2 1901 0026 DIGOE SILICON u FSA 4003Piv AZ 00141 66519 POWER SUPPLY BOARD ASS A2C 0160 0168 C FXD MY 0 1 UF 10 2090VDCW A2C2 0160 0168 C FXD MY 0 1 UF 10 20 vDCW A2C3 016 9168 CiFXO MY O i UF 10 203VDCW ALC 0189 0100 C iFXD ELECT 4 7 UF LOZ 35VDCW AZC5 0150 0052 C 2FXD CER 0 05 UF 20 00YDCH AZCA 0160 0168 CiFXO MY 0 1 UF 10 20 VDCw A CT 0180 0100 C FXO ELECT 4 7 UF 197 35VOCM ALCS 0160 0157 CiFXD MY 0 0047 UF 190 200VD0CW A2C9 0150 0097 C FXD TANT 47 UF 107 35Y0Cw A2C10 0180 0138 C FXD ELECT 100UF 100 10 40VDCW A2Cil 9180 0230 C FXO ELECT 1 0 UF 20 50V0CW 4462 0150 0052 C FXD CER 0 05 UF 201 400 A2C13 0160 0151 C FXD CER 4700 PF 80 20 4000VDCH ALCi4 0150 0151 C FXO CER 4700 PF 80 20 4000V0CW A2C15 9160 0151 CiFXD CER 4700 PF 80 20 4000VDCW A2C16 0140 5907 C FXG CER 0 01 UF 80 20 5000V0CW A2C17 0169 0907 LiFXO CER 0 01 UF 80 20 5000VDCW A2CiB 0160 0151 C FXO CER TOO PF 89 207 4000VD Cu A2C19 0160 0151 C IEX CER 700 PF 80 20 4000VOCW A2C20 0160 3448 C FXD CER 1000 PF 10 1000VDCW A2C21 0160 3443 C FXD CER 0 1UF 50VDCW A2CR2 1901 0040 DIODE SELICON 20 MA 30 WV A2CR3 1901 9049 DIGDE SELICON 50 MA 30 WV A2CRA 1901 0096 DIODE SELIGON 120V A2CR5 1910 0018 LIQDE GE 60 wiy A2CRB 1901 0025 DIGDE SILICUN 0 754 207PIV AZLRIO 1901 0040 DIODESSILICON 5
69. 8 14 3 10 Small Bright Spots caused by Minute 8 9 Component Identification Diode Imprefections in Storage Mesh 3 6 Assy Al ROTOR SEN 1 4 1 Model 141T Block Diagram 4 1 8 10 Low Voltage Schematic pa mx NON 8 15 4 2 Regulated Power Supply Block 8 11 Component Identification Power Diagram 4 2 Supply A2 SE EIE 8 16 4 3 High voltage Power Supply Block 8 12 Component Identification Horizontal Diagram Kr POR INS 4 3 PIVA BE ccs coco eere am modd i Ys 8 17 4 4 Pulse Circuit Block Diagram 45 8 13 High Voltage Schematic CETTE TS 8 17 4 5 Erase Functional Waveform 4 6 8 14 Component Identification Pulse 5 1A Spectrum Analyzer Intensity Cirenit AR 8 18 Limit adjust 5 4 815 Waveforms REZ 8 19 5 1 Adjustment Location 5 7 5 8 8 16 Pulse Circuit Schematics 8 19 iv Table Model 141T Title jay Specifications 1 2 Reference Designators and Abbre MIBIIONE be DE 1 3 Plug ins for Model 141T Display SECUS A Na E E fan 4 1 Current Capability 5 1 Recommended Test Eguipment Performance Check Record 5 2 Low Voltage Power Supply Adjust 6 1 Abbreviations for Replaceable Parts Lists rrr my Gap pas d LIST OF TABLES Page Table 6 2 6 3 7 1 7 2 8 1 8 2 8 3 List
70. 902 3104 1502 3385 1902 3385 1902 0064 DIUDE BREAKDOWN 5 624 5 DIODE BREAKDOWNI6G9 8v 2 DIODE BREAKOOWN 6S V 2 DIODE BREAKDOWN 7 5V HIGH VOLTAGE TRIPLER ASSY 00141 61103 DELETED GASKET SIDE GASKET CENTER NOT ASSIGNED PULSE CIRCUIT BOARD ASSY C FXD MY 0 0056 UF 10 200VDCW 00141 61103 00181 47101 4 1 00181 4710 00181 47102 00181 47102 00141 66520 0160 0158 00141 66520 192P56292 PTS iS2P56292 PTS 8160 0158 C FXO MY 0 0056 UF 102 200VDCW 0150 2212 C FXO MICA 560 PF 5 320VDCW 0160 2212 2503 0140 0204 C FXD MICA 47 PF 5 500VDCW RDMIBE4TOJSC A5C4 0440 0207 C3FXD MICA 330 PF 5 0140 0207 A5C5 0160 0153 C FXD MY 0 001 UF 102 Z00GVUCW 192P 1029 2 PTS A5C6 0160 2262 LiIFXU CER 16 PF 5 500 DCW 301 000 COGQ 1604 ASCT 0160 2146 CiFXD CER 0 02 UF 80 20 100VDCW TA A5C8 0180 0228 C iFXD ELECT 22 UF 10 15VDCA 1500226X901 5B2 DYS A5C10 0180 0376 C FXD ELECT 0 47 UF 10 35VDCH 1500474X903542 DYS ASCil 0160 0168 CtFXO MY 0 1 UF 10 200VDCM 192P10492 P TS A5C12 0160 0158 L FXD MY 9 1 UF 10 203 VBCW 192P10 92 P TS A5C13 0180 0155 C FXD ELECT 2 2 UF 20 20VDCW 1500225X0020A2 DYS A5C14 0160 0157 C FXD MY 4700 PF 10 200VDCW 192P47292PTS A5C15 0180 1735 C FXD ELECT 22 UF 10 3OVDCW 0180 1735 A5C16 0180 1735 C FXD ELECT 22 UF 10 30VDCW 0
71. 92P10492 PTS 150D4T5X903562 0Y5 192P47292 PTS 1500476X9035S2 3YS 0180 0138 150D105X0050A2 0YS 33C 174 DA 045 04 0CO DA 045 04 0CO 0A045 040C0 TR5G81232 1 TM50R1232 1 D4045 040C0 DA045 040C0 C0678251F102KS25 CD 8131 050 651 104Z F06G1088 F0G1086 UG 588 1910 0016 SR1358 8 FDG1088 F061088 FDGL088 F061088 SR1358 6 FO 2387 1910 0016 FDGLOBA 1N3718 SPEC FOG1088 1901 0049 1901 0341 1901 0341 F0G1088 1901 0436 1901 04 36 1901 0029 2110 0067 FOZGRTSOA 312 500 312093 120 MR 306 1 10608 1 1537 76 14852600603 6008 32CN Model 141T Replaceable Parts Table 6 2 Replaceable Parts Cont d Reference up part Number Qty Description Mfr Part Number Designation A2MP3 5040 0401 SUPPURT CAPACITUR 5040 0401 A MP4 5040 0402 MOUNT TRANSFORMER TOP 5040 0402 A2MP5 5040 0430 MOUNT TRANSFORMER BOTTOM 5040 0430 AZMP6 01200 01101 HEAT SENK TRANSISTOR 01200 01101 A2Gi 1854 0005 TSIR SI NPN 2N708 AZOZ 1853 0036 TSTR SI PNP 23908 4203 1854 0022 TSTR SI NPN 5178942 A204 1854 0087 TSTR Si NPN 2N3411 A205 1554 0071 TSTR 5i NPNISELECTED 2N3704 1354 0071 4208 1854 0022 TSTR SI NPN S17843 A201 1654 0071 TSTR SI NPNI SELECTED 2N3704 1854 0971 A208 1854 0071 TSTR 51 NPNISELECTEO 2N3704 1854 0071 A209 1854 0039 TSTRIST NPN 2N3053 A2010 1854 0215 TSTR SI NPN eN3904 AZOLE 1854 0071 TSTRISI NPNI SELECTED 2N37041 1854 0071 A2012 1850 0099 i TSTRIGE PNP 2N954 A 13 1853 0084 1 TSTR 51 PNP 2N
72. AHOdYDNIS ARS sour Si 1E2S02 l Asriqeyes 5et xoB Qd TRION PROJ MAIS Gy SARS aal PRY ISZGGKY WRVGNED L202 HAPE 6 60 0 L 6 05 81 OPOCHI mag s p sed VIWA cac Suipyng 9 4004 NET SUAISAS PGIMLADY IUUQ ML STNIH EM SAN 25023 tegy Si iure mez UMBA SHINES 00171 Aueducg y oxisnyg RETA HO EVNIAODO H629 FOREX 88 EZEZAG LDG FAL ek EA PROH UdOJEH YANAPO SJaquiew UPISA ply Aueduog Y DAGSNY NVLSIMV E yuqueisi NO La It 21983 Ob OP Ep EI gume nibxag ZER Gg Od neging Si LONG AAWAN wo Sedi tee 22 ei ANGGAQ OVAOVAANJH 12102 De Br ip 220 taj SAGUBY Jehan pipi ki Yopig sinoy UMA E gy 2925 Oger aah ys edy gests el HI SYdH ade 42 81 88 16 ei Hany VEHIS 0669 43 402 xog Dd y 95S tus TODD gy ramus peyoed uapiaH QNY IH3ZEIMS wong funuolg eI Lzr0i NER 09 60 se L160 pi PUNOJ LIJEKA ZE Lob QE G 5 a LIP 351 S1N38W83H0SV3m8 ARES 95 50 Dez tee ja Ge sunuo g 02 3 0 NJEJ uaSpasqatibiu By sBusag prexyeq naysaq N3G3 4S SG 58 92082 8 Bob 391 B 912ue B A 3 49 OUND ES OPERE MA MERY ve Blogeds3 PA MH App SENSEY 90 28 2 90 U 12 Pi Y emuecse Kate a zakaj BGYS bf PY Taj S PASS i ost di RIE Upi Ay S mpuede 9 010g Jaen 3 aqdi 20925 xai G 0029 O E 191 Z muopoimg Dp sauejszy yg ng Pua D st
73. BT VLV XML 2029 658 15 ei Brosh UDIAB Py 5584 01 oct PPU NOHLIJTI 0679 MHOA MIN 0660 8B DL6 XML S8y 905 508 Bi 16088 Faso svi 270 BEAM SS n beide 61 Pa 1069 92 014 XML O968 198 19 191 2izo uoi uixoq BAY ROLE ZE SA4BSNHDYSSYN ELSE EZ2 GEB XML 000 29 Zigi ei 3 006 HADAS Wag DJEMOH BOSS SIONFTY GJHVADVd 9025 8142 pili 181 2126 oer ueg CECZ X08 0 AMG 0154 9096 PAR 9187 Pues D MU YU 1921 86 Gib 194 BSBLSSPUSSEL ZIL eae RI 9042 9 el 6 BUOZ 5011 H VIE BRUBUZd n H m tyedsty naoa ten WS HS een Mi qna msn i e bed beber 9 vieja BI pes Genk UE 8089 xog Qd u v2 ico 06529 ui quod EK 3807 ue unos eer LE G6 at JOWINOO 31S1 LON SVJHY HOF 39062 x00 Od VINYNVE 184280 BL i 9812 ei Oder p 98 HR dH z992 5092 1 2 Y lau Aa ow ano QUES ONY EEN Weg ropentes ues asof ves Soimus MU EE i Heung Bvotuonoss izi SPOLNA t pred JS MAH en amp euew 3206 2193 8v it 52494 50 BP Zaang 69101 apepedy BELZ Der OG LB e pn Ad SPORNI NOVAMIH BINED oa Sidi S pang eus aye 108 10 086 EPAWERY gau cg nei woe aon rien Bed Zeen WA Oise xal Pur OJOJ ae PA P se BOGVA VS 12 VS 8SU8312381S0 BILA epi ea bear ah e RIt34 QUY MH 309 T PASE i SBy ib BL 889 9153 OBeJEdY OHND EJR BES aen NI Y EROS NU 1589 OG Ee b i Dl 8898185 put 3 apia
74. CK MELIS DIV TRW INC WALDES KOHINOOR ENC ELECTRONIC INDUSTRTES ASSOCIATION AIRCO SPEER ELECT COMP SW TCHCRAFT INC SMITH HERMAN H INC RADIO MATERIALS CO AUGAT INC I MC MAGNETICS CORP GORDOS CORP INDUSTRIAL RETAINING RING CO co ADDRESS ANY SUPPLIER OF U A MILWAUKEE WES DALLAS TEX SYRACUSE N Y PHOENIX ARIZ NEM ROCHELLE NN Ya MOUNTAIN Vita CALIF NERAL Na da New ROCHELLE N Y MILWAUKEE WISC YOUR NEAREST HP OFFICE N ADAMS MASS BRISTOL CONN ST LOUIS MI LOS ANGELES CALIF MILWAUKEE WESC PROVIDENCES R L CHICAGO Ili ELK GROVE VILLAGE Ili PHILADELPHIA PA ERIE PA NEPTJNE Nado DES PLAINES iLL CITY OF INDUSTRY CALIF LONG S CITY N Y WASHENGTON D C DU B3IS PA CHICAGO Eth BROOKLYN N Y CHICAGO ILL ATTLEBORO MASS WESTBURY Lal N Y B OOMFIELD Nad IRVINGTON Neda See introduction to this section for ordering information Replaceable Parts 212 CODE 53204 75231 13201 85008 10801 94040 47105 10802 53216 01241 26010 63017 90931 53201 02905 60640 19144 16512 07753 60016 91746 11101 20006 15801 60630 11207 60646 02103 11590 27003 07111 6 9 Replaceable Parts Model 141T 141T A 1 06 76 Figure 6 1 Cabinet Parts Exploded View Model 141T Replaceable Parts MP27 MP30 MP25 MP30 MP28 MP30MP24 MP30 MP26 MP29 141T R 3 Figure 6 2 Mechanical Parts Front View 6 11 Replaceable P
75. DE 4 58 When the CONV pushbutton is pressed a 100 volt potential is removed from A5R25 ABCRI5 is forward biased by 100 volts through A5R26 A5 CR14 and R25 This voltage divider sets the storage mesh backing electrode to approximately 29 volts A5 CR13 is reverse biased preventing output pulser sig nals from passing through This action produces con ventional oscilloscope operation by disabling the vari able persistence mode Model 141T 4 59 When the oscilloscope is turned off a display s stored on the CRT is protected from unintentional era sure by A5Q17 and the associated circuit 4 60 TRACE ALIGN 4 61 The trace align coil L1 is located around the CRT near the screen Adjustment of TRACE ALIGN R7A B changes the magnitude and direction of current through the coil and rotates the trace into alignment with the CRT graticule 4 62 PLUG IN KIT FABRICATION 4 63 The HP Model 10477A and Model 10487A Ac cessory Plug ins are blank plug in units for the instru ment These two units permit the user to design his own special purpose circuits Current available from Theory each of the instrument power supplies is shown in table 4 1 Do not exceed the current capabilities in table 4 1 Table 4 1 Current Capability Supply Voltage and Current Available at J1 J2 pin number each Jack J1 and J2 0 50 ma 50 100 ma pin 2 must be wired to pin 3 in the plug m 0 137 5 ma 10 200 ma 0 0 9 amp
76. DE FLEX CIRCUIT HV See introduction to this section for ordering information Rep aceabie Parts Mfr Part Number 00740 29902 00141 00105 00141 00103 00141 00104 00141 01207 1400 0651 00141 01263 00741 07204 00141 01208 00141 04101 00141 04104 00140 60662 00141 04105 00141 61206 00180 01218 00140 24712 1608 1108 9553 1410 0052 5040 0708 5040 0710 1490 0030 OBD 5040 0421 5000 0053 00141 21001 5000 8015 SJ1798 SJ 1318 S4 1318 SJ 1318 EB 3331 0815 0031 0811 2030 0811 2030 2100 2962 2100 0374 2100 0445 2100 0015 2190 2897 2100 2897 0811 2994 8926K316 207001 10 205 11A 1013 9100 3285 332 14 03 011 628 13 5083 2587 8120 1538 00141 61632 00141 61624 00141 81625 00141 81622 00441 61623 00141 61627 5060 0521 5100 18 C MD 00140 23101 5080 1686 Replaceable Parts Table 6 2 Replaceable Parts Cont d Reference HP Part Number Oty Description Designation Al 00141 66515 Dip BUARO ASSY ALCL 0150 0052 XD CER 0 05 UF 0 S00VWH ALLS 0150 0052 C FXxD CER 0 65 UF 208 amp 40UVDCW A1C3 0150 0052 C FXD CER 8 05 UF 207 40OVECN ALCRA 1901 9028 PIGGE SILICON 3 754 40IPIV A1CR2 1901 0028 DIDDESSILICON 7 754 40 PIV ALCR3 1901 0028 DIDDE SILICON 0 754 4 amp 0 P YV USA 1901 0028 DIGDE SILICON 0 75A 40JP Y ALCRS 1901 0028 DIODESSILICOM 0 754 402P1V AlCK 1901 0028 DIODESSILICUN 0 75A 60IPIV AICR 1901 0928 DIOOE ISILICON 0 754 40 PIV ACR 1901 6028 OIOOE SILICON 0
77. DPDT Mfr Code 82389 Mfr Part Number 11A 1013 W1 Change to HP Part Number 8120 0078 Qty 1 CABLE ASSY CORD SET 7 5 Mfr Code 70903 Mfr Part Number KH 4147 CHANGE 3 Table 6 2 Delete J10 J10E1 11 J11E1 Delete W11 W11MP1 W11MP2 Section VIII Delete Auxilliary B portion of figure 8 7 CHANGE 4 Table 6 2 MP3 Change to HP Part Number 00141 00212 Qty 1 PANEL FRONT Mfr Code 28480 Mir Part Number 00141 00212 MP6 Change to HP Part Number 5060 0765 Qty 2 RETAINER HANDLE ASSY Mfr Code 28480 Mfr Part Number 5060 0765 MP13 Change to HP Part Number 5060 0777 Qty 2 KIT RACK MOUNT Mfr Code 28480 Mfr Part Number 5060 0777 MP14 Change to HP Part Number 5000 0747 Qty 2 COVER SIDE Mfr Code 28480 Mfr Part Number 5000 0747 MP16 Change to HP Part Number 5060 0740 Qty 1 COVER ASSY TOP Mfr Code 28480 Mfr Part Number 5060 0740 MP17 Change to HP Part Number 5060 0752 Qty 1 COVER ASSY BOTTOM Mfr Code 28480 Mfr Part Number 5060 0752 MP22 Change to HP Part Number 00141 24701 Qty 1 SUPPORT TOP PANEL Mfr Code 28480 Mfr Part Number 00141 24701 7 1 Changes and Options MP23 Change to HP Part Number 00141 24702 Qty 1 SUPPORT BOTTOM PANEL Mfr Code 28480 Mfr Part Number 00141 24702 MP49 Change to HP Part Number 5040 0444 Qty 1 SHIELD LIGHT Mfr Code 28480 Mfr Part Number 5040 0444 CHANGE 5 Table 6 2 A2 Change to HP Part Number 00141 66518
78. Excessive intensity may damage the CRT storage mesh The INTENSITY setting for any sweep speed should be less than that intensity which just eliminates any trace blooming with minimum PERSISTENCE setting 3 23 Persistence and intensity determine the dura tion of display afterglow Always set PERSISTENCE and INTENSITY as shown in figure 3 2 The PER SISTENCE control sets the rate that a display is erased INTENSITY sets the brightness of the trace as it is written With a given PERSISTENCE setting the actual duration of trace afterglow may be in creased by increasing the INTENSITY The PER SISTENCE control sets the rate of erasing a written display The brighter a trace the more time reguired to erase the display Conversely a display of low intensity will erase more rapidly The same principle applies to a stored display of high and low intensity 3 24 Pressing STORE pushbutton permits a written display to be stored at reduced intensity in the os cilloscope for comparison measurement or photog raphy at a later time Selection of the STORE con figuration disconnects STD FAST ERASE INTEN SITY PERSISTENCE and CONV functions 3 25 The TIME control varies the length of time a display is stored The time ranges from 15 seconds minimum TIME control setting when writing in FAST speed and transferring to STORE to over 2 hours maximum TIME control setting when writing STD speed and transferring to STORE Light output is in ve
79. HORIZONTAL DRIVER CIRCUIT 4 14 The horizontal driver is an impedance con verter circuit The output from the horizontal ampli fier circuit in the plug in unit is applied to the input of the horizontal driver circuit which in turn drives the horizontal plates of the CRT 4 15 CIRCUIT DESCRIPTION 4 16 LOW VOLTAGE POWER SUPPLY 4 17 The low voltage power supply consists of 4100 volt supply 100 volt supply 248 volt supply and 12 6 volt supply The 100 volt supply is inde pendent and provides a reference voltage for the 100 volt supply The 248 volt and 12 6 volt sup plies are dependent on the 100 volt supply for refer ence voltages 4 18 Figure 4 2 is a simplified block diagram of the regulator used in the low voltage supply The series regulator acts as a variable resistance in the regulated output A sensor or differential amplifier compares the output voltage with a reference voltage The driver emitter follower or amplifier controls the bias on the series regulator which effectively controls the series resistance Any change in output voltage is fed back to the series regulator The change in series resistance and the resulting voltage drop is opposite to the output voltage change maintaining the output voltage at a constant level REGULATED UNREGULATED DC OUTPUT DC VOLTAGE SERIES RECTIFIERS REGULATOR SENSOR DRIVER GR DIFFERENTIAL AMPLIFIER HA REFERENCE VOLTAGE 1417
80. ITCHCRAFT INC SMITH HERMAN H INC RADIO MATERIALS CO AUGAT INC IMC MAGNETICS CORP GORDOS CORP INDUSTRIAL RETAINING RING CO THIS MFG NUMBER PROD INC SEMICONDUCTOR COMPONENTS Div Co ADORESS ANY SUPPLIER OF ee e MILWAUKEE WES DALLAS TEX SYRACUSE N Y PHOENIX ARIZA NEW ROCHELLE Neva MOUNTAIN VIEW CALIF NEWARK Nade Nem ROCHELLE NGC MILWAUKEE WESC i YOUR NEAREST HP GFFICE N ADAMS MASS BRISTOL CONN ST LOUIS MI LOS ANGELES CALIF MILWAUKEE WESC PROVIDENCE Reina CHICAGO Ili ELK GROVE VILLAGE PHILADELPHIA PA ERIE PA NERT ANE Nede DES PLAINES ILL CITY OF INDUSTRY CALIF LONG LS CITY N Y WASHINGTON D C DU 8315 PA CHICAGO Itt BROOKLYN N Y CHICAGO Fils ATTLEBORO MASS WESTBURY Lalor N Ye Bi GOMFIEL Os Neto TRVINGTON Node Tite See introduction to this section for ordering information Replaceable Parts ZIP CODE 53204 75231 13201 85008 10801 94040 87105 10802 53216 91247 26010 63017 90031 53201 62905 60640 19144 16512 07753 60016 91745 11101 20008 15801 60630 11207 50646 02793 11590 97003 97111 6 9 Replaceable Parts f Model 141T 141T A 1 06 78 Figure 6 1 Cabinet Parts Exploded View Model 141T MFR NO 00000 01121 01295 03508 04713 06540 07263 08718 15655 26365 27191 284B0 56289 58474 71400 T1468 71596 71107 71744 71785 72825 72982 74276 15915 76
81. LL OWBLIER FLEET OIV FEDERAL PALAEEG EL EGE GRirS REPRODU ER CJRPA CUTLER HAMMER INC POWER DIST E CONTROL DIV HEWLETT PACKARD CO CORPORATE HQ SPRAGJE ELECTRIC CI SUPERIOR ELECTRIC CO THE BUSSMANN MFG Div MC GRAW EDISON CU ITF CANNON ELECT INC GLOBE UNION INC CENTRALAB DEVa COTO COR CO INC CHICAGO MINIATURE LAMP WORKS CINCH MFG CO DIV TRW INCA EBY HUGH H INC ERIE TECHNOLOGICAL PROD INC SIGNAL ITE INC LITTELFUSE INC CINCH MONADNOCK MELLS DIV Feu INC WALDES KOMINGOR INC ELECTRONIC INDUSTRIES ASSOCIATION AIRCO SPEER ELECT COMP SWITCHCRAFT INC SMITH HERMAN H INC RADIO MATERIALS CO AUGAT INC IRC MAGNETICS CORP GORDOS CORP INDUSTRIAL RETAINING RING CO t9 ADDRESS ANY SUPPLIER OF U S A MILWAUKEE WES DALLAS TEX SYRACUSE Nata PHOENIX ARTI NEW ROCHELLE Nata MOUNTAIN Vitwe NEWARKs NJ New ROCHELLE NY MILWAUKEE MESC YOUR NEAREST HP OFFICE N ADAMS MASS BRISTOL CONN ST LOUIS MI LOS ANGELES CALIF MILWAUKEE MISC PROVIDENCE Rele CHICAGO Ill E K GROVE VILLAGE ILL PHILADELPHIA PA ERIE PA NEPTJNE Nodo DES PLAINES ILL CITY GF INDUSTRY CALIF LONG iS CITY N Y WASHINGTON D C DU BOIS PA CHICAGO TEL BROOKLYN N Y CHICAGO illa ATTLEBORG MASS WESTBURY Lalas N Y BLOOMFIELD Nade URVINGTON Nada See introduction to this section for ordering information Replaceable Parts ZIP CODE 3
82. Net 40 Ibs 18 kg without plug ins Shipping 51 lbs 23 kg Model 141T 1 15 TIFICATION INSTRUMENT AND MANUAL IDEN 1 16 This manual applies directly to Model 141T instruments with a serial prefix number as listed on the manual title page The serial prefix number is the first group of digits in the instrument serial number figure 1 2 The instrument serial number is on a tag located on the rear panel SERIAL SUFFIK NUMBER SERIAL PREFIX NUMBER SERIAL NO 0000 A 00000 CC MADEINU SA COMPLETE SERIAL NUMBER 7000 A 22 Figure 1 2 Instrument Serial Number General Information 1 17 Check the serial prefix number of the instru ment If the serial prefix number is different from that listed on the title page of this manual refer to Section VII for instructions to adapt this manual for proper instrument coverage 1 18 Errors in the manual are listed under errata on an enclosed MANUAL CHANGES sheet if any 1 20 Refer any questions regarding the manual the change sheet or the instrument to the nearest HP Sales Service Office Always identify the instrument by mode number complete name and complete serial number in all correspondence Refer to the inside rear cover of this manual for a world wide listing of HP Sales Service Offices Table 1 2 Reference Designators and Abbreviations REFERENCE DESIGNATORS z Zla ME nie I E 2 j c BN power supply unrepairable Ra s mination
83. ONINOD 998 i sv Sissvuo HYOLVYHGIAILIOW 35043 MER SlLVW3H2S 89 BAS SIHL NO SLYVd d 22 i w A9 ZI 8 9 21 34N9 21 y ib Wie AS ZI 0 Su i and e ovg ZRIN ila 85 MOH 0022 MK AJ z V 918 22H KA A oce 022 SHIA 0001 68 i vo go t lt MO1LVHB8IAJIL1 1 WW sagez 318V1SONON 2 351 Oi A6 b 7060 90 50 Y3A1Y90 TOHLNOJ NNS GOOTA i i F i x O O G AD I ante Z Nid IOMLNOO x S mo cm 3ON31SISH3d 3001 1266 Ni 9n d Oi Vbi yur 4 POV Hid3Q POY 1830 JLAM LSVJ JLINM 018 uo 1 I mil 3NOO BC i oss A 1 I WI lo Chino 29 7 35 anco eu VISO d gt 0 VISO d ge 81SO d 150 go A001 a GERT i Cms ZEN 2404S LEM sva disi EH 808 y O o Qiu ADO 1dO 600 a gt ESE op 35 3 310W3H OL ss1na sv f Any a a TRAPER ne Na F w D Na
84. SSILEICON 30 A5CRZb 1901 0418 DiODE S ZA 400PRRV ASCRZT 1901 0033 DIOOE SILICON 100MA 18 ASCRZ8 1901 0040 DIODESSTLICON 50 MA 30 WV ASCRZS9 1901 0040 B ODE SILICON 50 MA 30 wV ASLI 9100 1630 COLL CHOKE 51 0 UH 5 ASQI 1853 0020 TSYR SI PNPISELECTEO FROM 2N37023 4502 1855 0347 TSTRIUNIJUNCYIGN Si A503 1854 0071 TSTR SI NPNISELECTED FROM 2N37043 4504 1854 0071 TSTR SI NPNESELECTED FROM 2N37043 A595 1854 0071 TSTR SI NPNISELELTED FROM 2N37041 A506 1854 0358 TSTA SI NPN 4507 1854 0358 TSTR SI NPN AS5QB 1854 0358 TSTR SI NPN 2509 1854 0071 TSTR S1 NPNESELECTED FROM 2N37041 45010 1654 0071 TSTR SI NPNISELECTED FROM 283704 45911 1854 0071 TSTRISE NPNESELECTED FROM 2N3704 3 A5012 1854 0071 TSTR SI NPN SELECTED FROM 253704 A5913 1854 0234 TSTRISI NPN 2204 4854 0071 TSTRISE NPNLSELECTED FROM 2N37041 45015 1854 0071 TSTRISI NPNISELE TED FROH 2N3704 A5G16 1854 0071 TSTR SI NP SELECTED FROM 2N3704 ASOLT 1854 0071 TSTR SI NPNISELECTED FROM 2N3704 A5018 1854 0071 TSTRESI NPNISELECTED FROM 2N3704 A5019 1854 0071 TSTR SE NPNESELECTED FROM 2N3704 A5020 1854 0071 TSTRISI NPNISELECTED FRUM 2N3704 A5021 1554 0071 TSTR SI NPNISELECTED FROM 2304 ASQ22 1854 0071 TSTRISI NPNISELECTED FROM 2N3704 A5R1 0757 0473 REXO MET FLM 221K OHM IZ 1 8W A5RZ 0684 1051 5 R FX COMP IMEGUHM 1 i 4W ASR3 09684 1021 RiFXD COMP 1000 DHM LOE 1 W ASRA 0757 0401 R EXD FLM 100 OHN 1 1 8W A585 0684 2221 R FXD COMP 2200 BHM 10 1 4 A5R6 0684 4731 RiFXD CGMP 47K OHM 10
85. ST a Perform preliminary setup paragraph 5 8 b Rotate STORE TIME to MAX c Press ERASE d Trigger a single sweep and immediately press STORE e After 15 minutes rotate STORE TIME to MIN Trace should still be visible 5 18 WRITING SPEED STANDARD a Perform preliminary setup paragraph 5 8 b Press STD c Set time base for 50 usec div sweep d Repeatedly erase and trigger a single sweep increasing INTENSITY slightly each time until trace writes and remains visible for one minute 5 19 STORE TIME STANDARD a Perform preliminary setup paragraph 5 8 b Rotate STORE TIME to MAX c Press ERASE d Trigger a single sweep and immediately press STORE e After 2 hours rotate STORE TIME to MIN Observe that trace is still visible 5 20 This completes the Performance Check If the instrument does not meet specifications the adjust ment procedure which follows should be done If this does not result in satisfactory performance refer to Section VIII for maintenance and troubleshooting information 5 21 ADJUSTMENTS 5 22 The following paragraphs describe procedures o calibrate the instrument so that it will perform as M specified in table 1 1 The entire adjustment procedure can be done in sequence or any separate adjust ment can be calibrated by following the steps out Adjustments lined in the appropriate paragraph The locations of adjustment controls are shown in fig
86. Seo dkAbZOZZEZ 20181 2601822 948 8 HL ONO wingi H fok 68 1 burpang testno pri Bi NAE Bi disi MAY OL JASE 965 31057 5090 KIRS SAVNI HE Qi PIT RISE VHON 0 IUGE 9 SUBIDOS WS 2 S2 12 O99 9828059 ml 2 UIDI 60 19585 UA SM DEA ag PY INR Na wyn eden 29 Ad EES VONJ N09y2839 3190 Geer KEME 9895 6960 6096 Pi VIDI 19 eeu op TP 131 seg Qd bd aqota PJUJ VISINOQNI DZ xH HvIS3I3B 21929 696 181 306 158 4ndpeqsiuop AS J0044 MIZ SU FEE BIT ies anig HVISINIH 31989 GLE HAL Pi 190 099 SKAD 343998 auti Poux IA aue SZK Wun PL MVISMYU ae biS StU MIRE SHE 19120 6902E RE 919 299 gaer BH EC gz91 WEDE AN BI BRIS org hu ne d RADA SI MOJADA NONOUI 3 Kuertao3 Super Mipi Aug npa GRY T A YA Wis 69r 12 URI SUANY Wl a6 656 419 DES 93 eb 929 2 Bri Sg HUDU Meg ODIN 89 Jini 6266 52 wei YANNAN age Si6 Z 191 204 pu uS PC 09 kani Y dap procu 16 4e 29 66 17 elo SUPE HAYY WE HA Si 921 eueupg AG Poar Bi KI K RON Saa bul GORE B op 98 98 2 050 PI JE 44 08 000 0 PZ USES UA mueg 04808 au19 01201 DALA apod a peed S85FZS0 9191 U88386 YSZOWAMIH HILI 98 6b 26 Kani 2409 DE 08 680 381 uunadgono 7100 0 Hue Hei G vessels
87. TENSITY a single shot straight line trace may bloom as shown in figure 3 5 while a single shot signal with amplitude varia tions of several divisions may not cause blooming figure 3 6 To determine the best INTENSITY set ting connect a signal which approximates the sweep time and amplitude of the single shot signal to be written Set PERSISTENCE fully cw and trigger a single sweep of the test signal Set the INTENSITY as far cw as possible without causing blooming Re peat the single sweep signal erasing the display and setting the INTENSITY after each trace until the desired display is obtained This setup should give maximum persistence to the single shot display After the single shot signal has been written the display may be retained by pressing STORE and setting the TIME control to MAX 3 34 Single shot signals which require a beam speed faster than 50 microseconds per division can be Operation written with more brightness by setting the WRITING SPEED to FAST The screen will be unevenly illumi nated after erasing when WRITING SPEED is in FAST however the INTENSITY can be set high enough to make the display visible through the illumination A display written with WRITING SPEED set to FAST will be obscured by positive fading more rapidly than a display written with WRITING SPEED set to STD 3 35 Single shot signals which require a beam speed between 20 and 200 microseconds per divi sion may have low brightness
88. The INTENSITY control should never be set high enough to cause blooming Ex cessive intensity can permanently dam age the CRT storage mesh 5 9 BEAM FINDER NOTE The BEAM FINDER returns beam to CRT screen regardless of deflection po tentials when used with the 1400 series time domain plug ins When used with the 8550 series fre quency domain plug ins the BEAM FINDER has no function a Perform preliminary setup paragraph 5 8 b Rotate vertical and horizontal position con trols fully cw c Press and hold BEAM FINDER pushbutton while slowly rotating INTENSITY cw until a trace becomes visible d BEAM FINDER should return trace to CRT regardless of position of vertical or horizontal con tro s e Adjust vertical and horizonta position con trols until trace is centered on CRT display f Release BEAM FINDER 5 10 Paragraphs 5 11 through 5 14 contain pre liminary operational checks of performance charac teristics not listed in table 1 1 Because these charac teristics are not specified stated results are approxi mate 5 11 FOCUS AND ASTIG 512 FOCUS and ASTIG controls should give a sharply defined trace when set to approximately mid range positions Adjust for sharpest trace possible and leave in that position 3 2 Model 141T 5 13 TRACE ALIGN a Perform preliminary setup paragraph 5 8 b Adjust TRACE ALIGN until trace is parallel to center graticule line This condition should occur
89. aking the conversion are given below figure 2 2 a Detach tilt stand by pressing away from front feet A b Remove plastic feet by pressing metal button and sliding each foot free c Using thin bladed tool remove aluminum trim strips These strips have adhesive backing and are located on sides behind front handles d Attach rack mounting flange using screws provided in kit in each space where trim strip was removed Position large notch of flange at instru ment bottom e Rack mounting kit contains filler strips that should be used as spacers between Model 141T and other equipment mounted in same rack FOOT RELEASE BUTTON PLASTIC FOOT 70007 98 Figure 2 2 Rack Mounting Procedure Model 141T _ 2 14 INSTRUMENT COOLING 218 Forced air cooling is used to maintain the re quired operating temperatures within the instrument The air intake and filter are located on the rear of the instrument Warm air is exhausted through the side panel perforations Allow at least 3 inches of clearance around the top rear and both sides of the instrument for cooling 2 16 The cooling fan does not require lubrication but the filter should be cleaned often enough to en sure sufficient air flow A thermal switch is mounted on the fan to protect against over heating 2 17 CLAIMS 2 18 The warranty statement applicable to this instrument is printed inside the front cover of this manual Refer to the rear of this manua
90. arts 6 12 MP23 MP75 MP65 MP73 Figure 6 3 Mechanical Parts Rear View MP95 HIDDEN Model 1411 Model 141T Replaceabie Parts A3MP2 A3MP3 MP88 HIDDEN A3MP1 MP79 MP 105 MP92 MP37 MP47 MP94 MP97 MP76 MP67 MP38 MP67 MP57 MP59 141T R 9 Figure 6 4 Mechanical Parts Top View 6 13 Replaceable Parts Mode 141T MP91 ERAS ON COVER WITH WHEN POW ENSITY LIMIT ADJUST it MP121 MP120 MP121 MP38 MP59 MP120 MP99 MP118 MP78 MP117 Figure 6 5 Mechanical Parts Bottom View 6 14 Model 141 T Changes and Options SECTION Vil MANUAL CHANGES AND OPTIONS 7 1 INTRODUCTION 7 2 This section contains information reguired to backdate or update this manual for a specific instru ment Description of special options and standard options are also in this section 7 3 MANUAL CHANGES 7 4 This manual applies directly to the instrument having the same serial prefix shown on the manual title page If the serial prefix of the instrument is not the same as the one on the title page find your serial prefix in table 7 1 and make the changes to the manual that are listed for that serial prefix When making changes listed in table 7 1 make the change with the highest number first Example if backdating changes 1 2 and 3 are required for your serial prefix do change 3 first then change 2
91. as follows WARNING To prevent personal injury wear a face mask or goggles when handling the CRT Wear protective gloves and handle the CRT carefully a Remove top and left side cover of instru ment b Remove bezel and discharge post accelerator lead and CRT connection to chassis ground c Remove flexible three conductor CRT lead W12 figure 8 2 from connector block d Disconnect clip on leads from CRT neck e Loosen clamp at CRT socket f Carefully remove socket from CRT base Use care since neck pins can damage the trace alignment coil g Place one hand on CRT face and use other hand to slide CRT forward and out of instrument 8 2 Model 141T 8 28 To install a CRT reverse the above procedure Insure that connector block and neck leads are con nected before turning power on After the CRT is installed do performance checks and geometry ad sd justment procedure in Seetion V 8 29 FAN REMOVAL AND REPLACEMENT 8 30 Use the following procedure for removing and reverse the procedure for replacing the cooling fan a Remove top and bottom covers of instrument b Disconnect white gray and white green gray wires from fan terminals c Remove all transistor heat sinks from fan assembly and push out of way d Remove four fan mounting nuts on rear panel of instrument e Lift out fan assembly 8 31 SEMICONDUCTOR REPLACEMENT 8 32 Figure 8 1 is included to help identify the leads
92. atches If damage is found refer to the claims paragraph in this section Retain the packing material for possible future use 2 5 Check the electrical performance of the instru ment immediately after receipt Refer to Section V for the performance check procedure The per formance check will determine whether or not the instrument is operating within the specifications listed in table 1 1 Initial performance and accuracy of the instrument are certified as stated on the inside front cover of this manual If the instrument does not operate as specified refer to the claims paragraph in this section 2 6 PREPARATION FOR USE 2 7 The instrument requires a power source of 100 120 220 or 240 volt 45 10 single phase 48 to 440 Hz that can deliver approximately 400 voit amperes removable jumper board in power module A7 provides selection of the line voltage to be used figure 2 1 Operating voltage is shown in module window SELECTION OF OPERATING VOLTAGE 1 Open cover door and rotate fuse pull to left 2 Select operating voltage by orienting PC board to position desired voltage on top left side Push board firmly into module slot 3 Rotate fuse pull back into normal position and re insert fuse in holders using caution to select correct fuse value 141T R 17 j Figure 2 1 Voltage Selection 2 1 Installation Before placing the Model 141T in op eration ensure that the operating vclt a
93. brated square wave outputs 141T R 10 3 Figure 3 1 Model 141T Controls and Connectors Model 141T Operation NE SY RS SEE ere ERN ARSS VARIABLE PERSISTENCE MODE CONVENTIONAL 1 Press STD pushbutton 1 Press STD pushbutton 2 Rotate PERSISTENCE control fully ccw 2 Rotate PERSISTENCE control fully ccw 3 Adjust INTENSITY to less than that intensity 3 Adjust INTENSITY to less than that intensity which just eliminates trace blooming which eliminates trace blooming 4 Press CONV pushbutton Do not increase INTENSITY Trace blooming figure 3 5 in dicates excessive INTENSITY that can damage the CRT Blooming does not occur in the CONV mode Do not increase intensity when in CONV mode Always repeat above proce dure each time sweep speed or in put signals change 141 T R 11 Figure 3 2 Intensity Adjustment 3 3 Operation 3 18 Shght differences im CRT sensitivities may require readjusting the sensitivity calibration of plug ins imstalled in the instrument for the first time or when moved from one display section mainframe to another Refer to the Operating and Service Manual of the plug in for the required adjustment procedure 3 19 OPERATING CONSIDERATIONS 3 20 DEFINITIONS 3 21 The definition of some words and phrases used in this manual may vary slightly from common usage The definitions of these words and phrases are as follows a Write To transform an input signal into a visible dis
94. d horizontal and vertical plug ins The low voltage transformer sup plies 6 3 Vac to the main filament of the CRT and to the calibrator circuit 4 7 CALIBRATOR 4 8 The 6 3 Vac is applied to the calibrator circuit where it is shaped into a square wave of line fre quency and applied to two front panel connectors 1V and 10V pk pk The 1 volt output is also applied to the vertical and horizontal plug ins for sensitivity calibration Accuracy of the calibrating signals is 196 4 9 HIGH VOLTAGE POWER SUPPLY 4 10 A transistorized oscillator and a step up trans former are used to generate negative and positive high voltages for the CRT The negative 2350 volt supply is electronically regulated pz m E i 115 230 SYST Low voLTAGE S 3VAC 248 IOO 100 12 6 HORIZONTAL iN Ex eld PERSISTENCE TRIGGER P O BEAM p CONNECTION BEAM FINDER FINDER s E VERTICAL PLUG IN I der 4 O PUSHBUTTON HIGH VOLTAGE SELECTOR POWER SUPPLY Z AXIS INPUT U t FOO ASTIGMATISM O INTENSITY N hj TRACE 414 8 1 Figure 4 1 Model 141T Block Diagram 4 1 Theory 4 14 PULSE CIRCUIT 4 12 This circuit generates pulses of variable level and rate These pulses and other dc voltages from the circuit are applied to the storage and persistence ele ments in the CRT The low voltage power supply pro vides all operating power for the pulse circuit 4 13
95. display section for the HP Model 141T 8550 series plug in spectrum analyzer and as an oscilloscope when used with HP Model 1400 series plug ins The instrument has variable persistence duration of trace afterglow and storage of CRT displays Persistence is variable from 0 2 second to more than 60 seconds A display can be stored at reduced intensity for more than 2 hours or displayed at normal intensity for up to 1 min ute Stored displays can be erased in 350 milliseconds 1 6 Variable persistence is especially useful for viewing slow sweep signals The persistence of the signals from electrocardiograms or other bio chemical phenomena can be adjusted to provide a complete trace yet to fade fast enough to prevent interference with the next trace Display persistence of swept frequency and time domain reflectometry measure ment readouts can be adjusted to eliminate flicker and still provide high resolution 1 7 The storage feature of the instrument can be used to store single shot waveforms and to later view or photograph the phenomena Comparison of wave forms can be accomplished by storing several displays separately and then viewing them simultaneously 1 8 The instrument accepts all HP Model 1400 series plug in units Amplifiers with bandwidths to 20 MHz and sensitivities to 100 microvolts per divi sion are available as well as time domain reflec tometry and swept frequency indicator units 1 9 CATHODE RAY TUBE
96. e 100 volt supply The reference voltage across A2R31 is compared with a sample of 100 volt output across A2R35 The error voltage sensed by differential ampli fier A2Q7 A2Q8 is applied through driver A2Q6 and series regulator Q3 The series regulator brings the 100 volt supply back into proper balance with res pect to the 100 volt supply Ac voltage from TI is rectified by AICR9 A1CR12 partially filtered by C4 C5 A2R27 and the resulting dc voltage is applied by the series regulator Q3 to the 100 volt output Regu lation is obtained as in the 100 volt supply A2R11C adjusts the 100 volt output and fuse A2F3 provides overload protection 4 29 248 Volt Supply Sensor amplifier A2Q2 in the 248 volt supply senses any variation in the out put voltage with respect to 100 volts The error volt age is amplified by driver A2Q1 which applies correc tive bias to series regulator Q1 A2R11A adjusts the 248 volt output and fuse A2F1 provides overload pro tection A2CR4 provides temperature compensation for A2Q2 and is normally forward biased 4 23 12 6 Volt Supply Sensor amplifier A2 Q11 senses any variation of output voltage with res pect to 100 volts and applies the error voltage to driver amplifier A2Q9 The driver increases signal cur rent to the level required to control series regulator Q4 The 12 6 volt output is adjusted by A2R47A Current limiter A2Q10 is a protective circuit for the series
97. e flood gun raise the surface potential of the stor age mesh in random areas sufficiently to allow flood gun electrons to strike the screen 4 41 PULSE CIRCUIT 4 42 Figure 4 4 is a simplified block diagram of the pulse circuit The pulse circuit supplies pulses of var iable repetition rate to control the operation of the CRT The pulse timer generates a pulse which triggers the monostable multivibrator The two outputs of the monostable multivibrator are applied to the flood gun driver and output pulser The flood gun driver applies pulses to the accelerator of the CRT to control stor age time of the display 4 43 The output pulser applies a positive voltage to the storage mesh of the CRT The erase timer provides a signal to the monostable multivibrator and output pulser to generate an erase pulse and also triggers the blanking circuit The blanking circuitenergizes a relay in the high voltage supply which applies a blanking voltage to the CRT The CRT collimator voltageis sup plied by a linear amplifier and is controlled by the selection of the writing speed at the front panel 4 44 STD AND FAST MODES 4 45 Pulse Timer Figure 8 16 is a schematic dia gram of the pulse circuit Setting the front panel PERSISTENCE control R10 determines the amount of current available from the pulse timer current source A5Q1 A5C1 charges to a potential which turns A5Q2 on A5C1 discharges through A5Q2 A5 Q2 turns off and A5C1 again begi
98. ePT Jusuoduwog SH SANS vou LEH gen CHA 2 La g D 69 8 810 i SO LHA LD eau vo 983 La Optu ZO 10 za 92uo Za sud 9 3 418 SO Lou see LO arty 9 8 90 leo Szuo za PHO 8 3 ais 92 09H 5 vey tO veiw E 8 SLO S vzuo lz eyo v3 ais e a 65H geu z a etu jeg pro szuo jed ZYD 3 ois O 8SH P O zey z8 iti S 8 jts dO L a 3 ais z a su ZD Lee tO LiH S a Z O pg 1zuo Es za vis leo 954 ra osy jea gotu SO LLO O ZHO v 915 vu osu Lea SSH LEO 62H z8 0 s D Oto jee 6LHD AI SLO La Liu 9 voy Z 8 SCH ieo eu Z Q so v8 stHd oa vio WA 9 8 jeo sau z a te gu Z D so Iza S SLO v2 SCH ED zgy gzs va tH Zo za 91H82 joa Z O v a piu O tsa za Szu lva 9H s a 90 LEO stuo oo ca Elu Z 3 OSH ji vzu JEO su sa so lzo viuo e Q OLD v2 Zid e8 eru 9 8 cH eg vu 9 vo zo eLHO Iza 89 v2 iH 92 8vH 1903 zzu eu jra eo zo ziuo 9 a O v d ozu s a vH LD Lu L a u e a zo tigo z 99 vo 69H Spy ZD OZH 13 LH ca to lso OtHO v a v a eau 8 vey 93 8 jra z o 9 t ea 6HO jra vo v a 98 PO ery Leo sty va izo eo 62493 z 8H0 jra co 998 Ps vu ea LAH 000 pg scHO c8 ga lea eo YA seu Leg 91H jE 610 zs
99. either of other two supplies If 100 volt supply is incorrect proper circuit repair may eliminate trouble in 248 volt or 12 6 volt supply If 100 volt supply is correct proceed to next step b The 4248 volt supply is referenced to 100 volt supply If trouble here has not been eliminated by checking 100 volt supply trouble lies in this circuit and can be located by making proper circuit and component checks as described in paragraph 8 50 c A trouble that appeared to be in the 12 6 volt supply may have been eliminated by above pro cedures If not it will be necessary at this point to make thorough voltage and component checks of the supply 8 55 HIGH VOLTAGE SUPPLY 8 56 1f one high voltage supply output is zero but other outputs are normal one of the rectifiers is likely at fault Normal dc voltages are given on the high voltage schematic 8 57 If there is no high voltage output observe the waveforms at the collector of A2Q14 blue wire If an approximately 30 kHz 20 volt peak to peak sine wave appears for short intervals the trouble is Model 141T Service Table 8 1 Troubleshooting High Voltage Supp y No Voltage Procedure Indication Conclusion Check A2013 A2L1 and the associated transformer primary for open circuits or shorts Replace any defective components 2 Check voltage at emitter of A2014 Check voltage at emitter of A2013 Check A2T1 and rectifier load
100. electrical ground safety ground at the power outlet The power jack and mating plug of the power cable meet international Electrotechnical Commission IEC safety standards DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE Do not operate the instrument in the presence of flammable gases or fumes Operation of any electrical instrument in such an environment constitutes a definite safety hazard KEEP AWAY FROM LIVE CIRCUITS Operating personnel must not remove instrument covers Component replacement and internal adjustments must be made by qualified maintenance personnel Do not replace components with power cable connected Under certain conditions dangerous voltages may exist even with the power cable removed To avoid injuries always disconnect power and discharge circuits before touching them DO NOT SERVICE OR ADJUST ALONE Do not attempt internal service or adjustment unless another person capable of rendering first aid and resuscitation is present USE CAUTION WHEN EXPOSING OR HANDLING THE CRT Breakage of the Cathode ray Tube CHT causes a high velocity scattering of glass fragments implosion To prevent CRT implosion avoid rough handling or jarring of the instrument Handling of the CRT shall be done only by qualified maintenance personnel using approved safety mask and gloves DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT Because of the danger of introducing additional hazards do not install substitute parts or perform any u
101. fies the front panel controls and gives a brief functional description of each The following paragraphs provide detailed descriptions of controls with multiple or complex functions 3 5 TRACE ALIGN 36 The TRACE ALIGN adjustment compensates for external magnetic fields that affect alignment of the horizontal trace with the graticule The align ment should be checked when the instrumentis moved to a new location and adjustment made when nec essary 3 7 BEAM FINDER 8 8 A high dc input signal may drive the trace off the CRT screen When the BEAM FINDER push button is pressed the trace will be returned to the sereen regardless of the setting of horizontal or verti cal POSITION controls If pressing the BEAM FINDER pushbutton does not return a beam to the viewing area press and hold the BEAM FINDER and gradually adjust the INTENSITY contro until a visible trace is obtained and release BEAM FINDER When used with 8550 series frequency domain plug ins the BEAM FINDER has no function 3 9 FOCUS AND ASTIGMATISM 3 10 These controls provide uniform focus of the trace over the entire CRT screen Adjustment is made in the STD WRITING SPEED with a low intensity spot on the CRT screen FOCUS and ASTIG are adjusted for a round sharply focused spot 11 Z AXIS INPUT 8 12 The Z AXIS INPUT jack and selector switch are on the rear panel of the instrument figure 6 3 To externally modulate the trace intensity set
102. flat head Fit H fillister head FXD fixed i 9 G giga 10 GE germanium GL glass 5 72 Replaceable Parts a Instrument mode and serial number b HP part number of items s c Quanity of part s desired d Reference designator of part s 6 5 To order a part not listed in the table provide the following information a Instrument model and serial number b Description of the part including function and location in the instrument c Quanity desired Table 6 1 Abbreviations for Replaceable Parts List GRD H HG HP HZ IF IMPG INCD INCL INS INT LB LH LIN LOG LPF LVR M MEG MET FILM MET OX MER MINAT MOM MTG MY N N C NE N O ground ed henry ies mercury Hewlett Packard hertz impregnated incandescent includes insulation ed internal nos wo Gg H D kito 103 kilogram D pound s left hand linear taper fogarithmic taper low pass filter s lever milli 10 mega 10 metal film metal oxide manufacturer miniature momentary mounting my ar uH m og PW Uu dH nano 10 ni normally ciosed neon normally open H H H intermediate freq NPO negative positive zero zero ternper ature coefficient negative positive negative not separately rep aceabie NPN NSR OBD order by description OH oval head OX oxide P peak PC 7 printed etched circuit s PF p
103. ge indicated in the power module window figure 2 1 agrees with the line voltage being used To avoid damaging CRT perform In tensity adjustment figure 3 2 2 8 When operating the Model 141T from a 100V or 125V source replace line fuse with a 4A slow blow fuse When operating from a 220V or 240V source replace line fase with a 2A slow blow fuse 2 9 THREE CONDUCTOR AC POWER CABLE 2 10 For the protection of operating personnel Hewlett Packard Company recommends that the in strument panel and cabinet be grounded This in strument is eguipped with a three conductor ac power cable that when connected to an appropriate re ceptacle grounds the instrument through the offset pin The power jack and mating plug of the power cord meet International Electro technical Commission TEC safety standards 2 11 INSTRUMENT MOUNTING 2 12 The instrument is shipped from the factory as a bench instrument with the tilt stand feet and TILT STAND FILLER STRIP BOTTOM PANEL TRIM STRIP ADHESIVE BACK FLANGE 2 2 RACK MOUNTING Model 1411 plastic trim in place Four supports are mounted on the rear panel of the instrument for operation in a vertical position Top left side and bottom panel covers can be removed giving access to components and adjustments Allow sufficient space around the cabinet for air circulation 2 13 A kit for converting the modular cabinet to a rack mount is included Instructions for m
104. i Qli A PUDY i G t Mi YNY patat REJA PALEDONO A MGA dHA POZEZE Ki ZSEL E LEGO Bi 122 BUWWYDYO Die 2 9Qq23 eATIPS1 pZ kanata EM DIED Haan LME ONOJ 1219 1456 250 481 D r giefen Top tone Dese WEN pZ Duipjing DUE MI g1EX2 d EE 49 82 YE 190 gi Some pt 2 6 ISEW 3 EA w s PI Wa oH 11 Z t Pi LOCEN ZFLOP 6 bondsa abusum BA VES Goen PRAEH D i 59 SB 560 91 92156 JK Eb BOAN 9OIDUUg HA YES euge DIEN 19 13 AWD SITUA Ub ZM OPOZE emt 89 FE vS p 28 5 ar OVIME ZEGE 9p CERED BES Ein WAS NaPAJRJ ga Maja PROH DOY MSH IGF PESES on 19 69 b 90 mi 303 9u10M 5 LO DL Wuauzg D NA y pope HAA DEn IA OOZES zori vo ZE 2 1050 194 Waid 3019511 LUERE PIE4JEJ NAH Ayo FIPS PE Quei ETA DROE MIH 88 po 99 Be sj BAOPRd KE HGOSIA eu Bye De BOUON id HA Od UP PIP HI MIHE SPACE kai DIR HMOVAMIH 28 Tou 011 1529 Z uni OUSHME ELE PISO east YES EEN PIENJEJ IE MAH ATA G PR west d LY SL ELOI HYS LEDY 2 Wugufurepag USIILEIM ART IIRS Dote OUT PILI GA ONY TAE 36 29 Gi 56 Pi UBIJA LO ON BAS Wb 3899AV pPulj Hj PIT vel PAOLA JAMAH NYb MiB PSUJ OJN WHYSO GHA SHE ZELE Maj 1991 DE 192701 R P e SUS DROGE MUDI Z SSEM En fiugpng MEENE SIN DEI EE vZLCZ NQ LAXHVAGHA
105. icofarads PHL Phillips PIV peak inverse voltage s PNP positive negative positive P O part of PORC porcelain POS position s POT potentiometerts P P peak to peak PRGM program PS polystyrene PWV peak working voltage RECT rectifier s RF radio frequency RFI radio frequency interference RH round head or right hand RMO rack mount onty RMS root mean square RWV reverse working voltage S B slow blow SCR silicon controlled rectifier SE selenium SEC second s SECT section s Si silicon SIL silver SL slide SP single pole SPL special ST single throw STD standard TA tantalum TD time delay TFL tefton TGL toggle THYR thyristor TI titanium TNEDIO tunnel diode s TOL tolerance TRIM trimmer micro 10 v volts VAR varijable VDCW de working volt s w watt s w with WIV working inverse voltage W O without WW wirewound 6 1 Replaceable Parts Model 141T Table 6 2 Replaceable Parts uA Mfr Reference up part Number Oty Description Mfr Part Number Designation Code AQ AL 00141 66515 DIGDE BOARD ASSY 28480 00141 66515 A 09141 60519 POWER SUPPLY BOARD ASSY 28480 90141 66515 A3 00141 81163 HIGH VOLTAGE TRIPLEK ASSY 28440 00141 61103 As NUT ASSIGNED A5 00141 66520 PULSE CIRCUIT BOARD ASSY 28480 00141 66520 bb 00141 56502 HORIZONTAL DRIVER ASSY 23480 00141 6650 AT 50
106. l for the CRT warranty statement If physical damage is found Installation or if operation is not as specified when the instru ment is received notify the carrier and nearest HP Sales Service Office immediately refer to the list in back of this manual for addresses The HP Sales Service Office will arrange for repair or replacement without waiting for settlement of the claim with the carrier 2 19 REPACKING FOR SHIPMENT 2 20 If the instrument is to be shipped to a Hewlett Packard Sales Service Office for service or repair attach a tag showing owner with address complete instrument serial number and a description of the service required 2 21 Use the original shipping carton and packing material If the original packing material is not available the Hewlett Packard Sales Service Office will provide information and recommendations on materials to be used 2 3 2 4 Model 141T Operation SECTION IH OPERATION 3 1 INTRODUCTION 3 2 This section contains front panel control infor mation and considerations for operating the instru ment Controls for operation of power supplies and cathode ray tube are located on the instrument front panel All other controls are located on the plug in units The instrument includes high and low voltage power supplies a calibrator circuit a CRT and a pulse circuit for variable persistence and storage operation 3 3 CONTROLS AND CONNECTORS 3 4 Figure 3 1 identi
107. l option instrument and the manual insert is missing notify the nearest Hewlett Packard Sales Service Office Be sure to give a full description of the instrument including the complete serial number and special option number 7 9 STANDARD OPTIONS 7 10 Standard options are modifications installed on HP instruments at the factory and are available on request Contact the nearest Hewlett Packard Sales Service Office for information concerning standard options 7 3 Changes and Options 7 11 Standard options presentiy available are described in the following paragraphs 7 12 Option 009 provides for a remote erase function through a BNC connector on the rear panel Com plete wiring information is shown in figure 7 4 and replaceable parts are listed in table 7 2 7 4 Model 141T Table 7 2 Option 009 Replaceable Parts HP Past No 00141 61628 Cable remote erase 00141 66517 Remote ERASE board 1250 0083 Connector BNC female 1901 0040 Diode 0490 0199 Switch relay 0490 0191 Coil relay 945V G NGV 2ZbuSy 103131736 Mit 6182 Obu 28A IHA IS Ganzen 9p obu ety ivu ia 10 10 2289 1 4282 182 OIN TSY 19 2n0 d iro d jA 9 ZI AODI SNOILVN9IS30 rav bey rav GLS YA 7102 1SV3 sy SSSVHO HOS HOO gola M9 32N38333M izud 833 2 b AOOI Ebu R 22 1 A3 21 Drop 6i GEH i 3A9 21 AQOI 400
108. l s function along with typical operating instructions if in doubt Possibly the intensity control on the oscilloscope front panel is not turned up or the level control on the time base plug in is misadjusted Use the controls as a guide to help isolate a trouble to a specific area 8 41 VISUAL CHECKS 8 42 After localizing the trouble to a specific area of the instrument make a visual check of that area Check for burned or broken components loose wires or circuit board connections faulty switch contacts or any similar condition suggesting a source of trouble If everything appears normal proceed to the next step 8 3 Service 8 43 WAVEFORMS AND VOLTAGES 8 44 Allow the instrument to warm up for about fifteen minutes before making any measurements Note the conditions for measuring waveforms and de voltages These conditions are stated in the de tailed troubleshooting procedures or listed adjacent to each schematic and must be followed to obtain proper readings Waveform measurement points with a number enclosed are placed on the schematics along main signal paths The numbers inside the measurement point symbols are keyed to corresponding waveforms adjacent to each schematic Waveforms can be used to measure gain or pin point a defective stage Use a probe with a needle tip to avoid creating a short circuit Dc voltages are shown on the schematics near active components such as transistors As an aid to locating
109. measurement points note a small dot etched on the circuit boards near the emitter of transistors source of field effect transistors cathode of diodes and positive lead of electyolytic capacitors 8 45 FINAL CHECKS 8 46 Review the theory of operation in Section IV to learn how the circuit should operate With the aid of this information it will be easier to discover why a defective circuit is inoperative Finally make re sistance checks to uncover the faulty component if it appears necessary to calibrate the instrument refer to Section V for the proper procedures 8 47 DETAILED TROUBLESHOOTING WARNING Voltages present in the power supplies are dangerous 8 48 LOW VOLTAGE SUPPLY 8 49 The series regulator transistors are located on the fan assembly Each is easily replaced by re moving the two screws and pulling the transistor from its socket AH other low voltage power supply transistors are located on the power supply board 8 50 De voltages shown on the low voltage sche matie diagram were measured to ground with Model 1402A and 1421A plug ins installed Voltages may vary slightly when other plug ins are used Correct voltages for points not marked are generally obvious by being connected directly or indirectly to a supply output Transistor base voltage in most cases should not measurably differ from emitter voltage when measured with respect to ground Voltage drops across breakdown diodes are indicated on
110. mesh also repels positive ions generated by the flood guns 4 39 Storage Mesh The storage mesh is just behind the CRT screen and is coated with non conducting material It is statically held at a slightly positive potential approximately 3 volts When the 4 4 Model 141T electron beam from the writing gun strikes the mesh coating secondary electrons are emitted This second ary emission creates a pattern of positive potential identical to the movement of the beam Flood gun electrons are accelerated by this positive potential pat tern and strike the phosphor screen creating a visible display 4 40 The storage mesh is pulsed with pulses of ap proximately 10 microseconds duration These pulses erase the positive pattern on the storage mesh by dis charging the mesh coating Time required for this erasing operation is determined by the pulse repeti tion rate The positive pattern on the mesh may also be neutralized manually by connecting the collector and storage meshes erase The high positive poten tial approximately 156 volts allows more uniform discharging of the surface When the storage mesh is disconnected from the collector mesh and returned to 43 volts the coated surface is at a uniformly egual potential of 9 volts In both cases the screen has no illumination The pattern may be lost by the storage mesh fading positive and allowing the entire screen to be illuminated This occurs when positive ions from th
111. n 07263 07263 07253 07263 07262 07263 07263 07263 07263 07253 04713 07263 07263 07263 28480 28480 04113 28480 28480 28480 28480 28480 28480 28480 28480 28480 28480 80131 28480 28480 28580 28430 28480 28480 28480 28480 28480 28430 01121 Oilzi 24546 01121 Otizi 01121 28480 28480 28480 28480 28480 28480 23460 01141 28480 01121 01121 01121 28480 26450 28480 28480 01121 28480 28480 28480 01141 Oilzi 28450 01121 61121 Olizl Olizi 0121 Oiled Replaceable Parts Mfr Part Number F561088 POGLOBB FOGLOBB FOGLOBB FDG1088 f061088 FDG1068 FDG1088 FDG1083 FDG1088 SR 1846 12 FD3369 F5G1088 FUG2088 9100 1630 1353 0020 MUS 894 1854 0071 1854 0071 1954 0071 1854 0358 1854 0358 1854 0358 1854 0071 1854 0071 1854 0071 1854 0011 2N 3446 1854 0071 1854 0071 1854 0071 1854 0071 1654 0071 1354 0071 1854 0071 1854 0071 1854 0071 0757 0473 C8 1051 C8 1021 C4 1 8 TO 101 F CB 2221 CB 4731 CB 2231 0698 3155 0757 0430 2100 0424 0757 0469 0757 04 3 0757 0481 2100 0943 CB 2221 0757 0466 CB 1831 C8 1061 CB 474 0698 4009 01751 0416 0157 0456 0757 0128 8 1061 0757 0850 0757 0367 0757 0481 CB 2221 CB 5611 0757 0793 LA 2241 CB 1031 CB 1051 CB 1931 CB 1031 Ch 1031 6 7 Replaceable Parts Model 141T Table 6 2 Replaceable Parts Cont d iuc Mfr Reference HP Part Number Ot
112. nauthorized modification to the instrument Return the instrument to a Hewlett Packard Sales and Service Office for service and repair to ensure that safety features are maintained DANGEROUS PROCEDURE WARNINGS Warnings such as the example below precede potentially dangerous procedures throughout this manual instructions contained in the warnings must be followed WARNING iM Dangerous voltages capable of causing death are present in this instrument Use extreme caution when handling testing and adjusting SS 2 1 76 A Model 1417 Aa Section II IH IV Title Page GENERAL INFORMATION 1 1 1 1 Introduction 1 1 4 Description 1 1 1 9 Cathode Ray Tube 1 1 WATANABE 1 1 13 Associated Equipment 1 1 1 15 Instrument and Manual Identi fication suo e u sqa a E NM 1 3 1 19 JRGONWNES eet le g s 1 3 INSTALLATION darla dales 2 1 2 1 Introduction D 2 1 2 3 Initial Inspection 2 1 2 6 Preparation for Use 2 1 2 9 Three conductor Ac Power Cables a saute ie 2 2 2 11 Instrument Mounting 2 2 2 14 Instrument Cooling 2 3 2 17 Claims 2 3 2 4 2 19 Repacking for Shipment 2 3 2 4 OPERATION Suq Coen GA 3 1 3 1 Introduction 3 1 3 3 Controls and Connectors SSE 3 9 Trace
113. nd re mains constant until A5C8 voltage decreases to 12 6 volts This action results from the forward biasing of A5CR29 which prevents current flow through A5CR8 and allows the output of A5Q7 and A5Q8 to go to its maximum level as determined by the fast write depth adjustment 4 52 At this point all pulse circuits have returned to the condition they werein prior to pressing the ERASE pushbutton and pulses from the pulse timer may again be applied to the storage mesh backing elec trode 4 53 PULSE CIRCUIT STORE MODE 4 54 Flood Gun Control Pressing the STORE push button removes 156 volts from A5R19 and A5R50 This turns off ABQ5 and pulses from the monostable multivibrator are now coupled through A5C5 to the base of A5Q6 During the 10 usec that A5Q4 output goes positive A5C5 is charged When A5Q4 output goes negative A5CR9 is back biased and A5Q6 turns off The collector of A5Q6 goes positive until A5C5 is charged and turns A5Q6 back on This pulse has a duration of approximately 60 usec This pulse is applied to the flood gun accelerator which turns the flood gun on for the pulse duration 4 55 The repetition rate of these positive pulses at the collector of A5Q6 is now determined by the setting of the STORE TIME control R9 which replaces the PERSISTENCE control when the STORE pushbutton is pressed 4 56 The writegun is blanked by A5Q16 through the action of A5Q14 and A5015 4 57 PULSE CIRCUIT CONVENTIONAL MO
114. ns to build a ramp voltage The repetition rate of this action is controlled by the setting of the front panel PERSISTENCE con Model 141T O PERSISTENCE i i PULSE TIMER ASQi A5Q2 MONOSTABLE MULTIVIBRATOR 2503 A504 O D i FAST WAITE OUTPUT PULSER ASQ7 ASQ8 ERASE TIMER ERASE O AND CONTROL A509 A301I8 A5019 IOO HZ ERASE MULTIVIBRATOR A5Q20 7 A5Q2i FLIP FLOP A5010 A5Q i trol The output of A5Q2 is a 0 to 10 kHz pulse with a very sharp spike which is coupled through A5C2to the monostable multivibrator This portion of the pulse circuit is active in all modes 4 46 Monostable Multivibrator The multivi brator A503 A504 operating in a monostable state receives pulses from the pulse timer and applies a negative going pulse approximately 10 usec wide to ASCR3 4 47 Output Pulser The negative going pulse from the monostable multivibrator allows A5CR7 to jecome forward biased with a current controlled by the setting of the fast write depth adjustment A5R14A or the standard write depth adjustment A5RIOA de Figure 4 4 Pulse Circuit Block Diagram l Theory O BE H FLOOD GUN CONTROL DRIVER A505 A506 e STD WRITE DEPTH aos f DEPTH aos ACCELLERATOR STORGE COL LIMATOR O 1 1 BLANKING STORE BLANKING CONTROL ASQI4 BLANKING H V CIRCUIT SUPPLY A5Q15 A5QI6 A2KI AMPLIFIER ASQ22 AMPLIFIER A5Qi2 A5Qi3 ij T C l pending on
115. o oio MO St Goh Ag zi wi EEX MO zeli AOO 3A9 2i 790 rav Higad ALIYM 1SV3 4001 SOY Hld3G MOS Did MOS 8020 OZM HI Wild Lnd LAO M HS3W 39VHOiS i A HZZ Ab AS ie e Z 828 00 w re MY azi Ca ica BCC 924 GZH y HHD xy WO P bZ A0OI 4 OOi HASZ YA Es 3A9 21 ADOI 22H Si MOLYNITJDOV ce NNS 0004 TN G BO nt EN 3002 SS 649 A 000 a EZH 2 ABb Q 8 2 S82 iii ABbZ lt gt AOOI A3 21 I I MO E 90 sd MN Sla H3HDOL3H1S 3S nd 7 945 6 ZO S Na AG A If Na d v BRE v I 9 b gt 6 a KOE i s 4400 T Sr EM 294 AA9 21 vi po I 10 po 2 0 6 gt PR 0189 Nn9 00014 ec j a 6 sus S E Pa 2 ze MO I sadni wv38 4 ANOD 3svs3 ous usw ae LN J 45S AOOI 318 ars 3S BIS er m suondo pue SA UBUD Model 1411 Service SECTION VIH SCHEMATICS AND TROUBLESHOOTING 8 1 INTRODUCTION 8 2 This section contains schematics repair re placement and troubleshooting information com ponent location and component identification illustra tions and waveforms for Model 141T Tables 8 1 and 8 2 provide guides to locating possible high voltage supply problems Table 8 3 defines symbols and con ventions used on the schematics Disassembly pro cedures for removing the
116. ol until stored display has desired brightness f To store more than one display press STD pushbutton set PERSISTENCE fully cw and INTEN SITY as required allow first display to be written on CRT Set INTENSITY fully cew and connect second signal to be stored Reset vertical POSITION if second display is not to be superimposed on first Slowly rotate INTENSITY clockwise until second display appears Press STORE pushbutton and both displays will be stored g A display stored when instrument power is turned off will remain stored for several days To observe a stored display press STORE set the verti 3 6 Model 141T Figure 3 8 Single shot 20 usec div display Figure 3 10 Small bright spots caused by minute imperfections in storage mesh 141T R 13 cal position control cew before turning on the instru ment Then adjust the TIME control until the stored display is visible h To erase stored displays press STD or FAST and rotate the PERSISTENCE control fully ecw or press ERASE for approximately one second then release First method is not effective when WRITING SPEED is set to FAST 3 32 SINGLE SHOT OPERATION 3 33 To write with persistence or store a single shot phenomena trial setting of INTENSITY is the best approach The amplitude of the phenomena and the sweep time required to display it will affect the Model 141T persistence For example with maximum PER SISTENCE and some settings of IN
117. ordance with the provisions of USA Standard Y32 16 1968 Reference Designa tions for Electrical and Electronics Parts and Equip ments dated March 1 1968 Minor variations from the standard due to design and manufacturing prac tices may be noted 8 10 Each electrical component is assigned a class letter and number This letter number combination is the basic reference designation Components which are not part of an assembly have only the basic reference designation Components which are part of an assembly have in addition to the basic desig nation a prefix designation indicating the assembly of which the component is a part resistor R23 on assembly Al is called A1R23 8 11 Assemblies are numbered consecutively If an assembly reference designation is assigned and later deleted that number is not reused 8 12 COMPONENT LOCATIONS 8 13 Locations of components on assemblies and subassemblies are illustrated in photos adjacent to the schematics Since the schematics are drawn to show function portions of a particular assembly may appear on several different schematics The com ponent location photo is printed next to the sche matic that shows most of the circuitry on the assem bly Components located on the chassis are identi fied in figures 8 2 through 8 5 The locations of all adjustments are shown in Section V Cabinet parts and other mechanical parts are shown in drawings located in Section VI 8 14 PREVENTIVE
118. pecification Measured Returns trace to NO screen 8 divisions 0 1 Divisions division Spot develops short y NO tali Trace remains visible for one minute NO Trace writes and remains visible for 15 seconds Trace can be stored for 15 minutes Trace writes and remains visible for one minute Trace can be stored for 2 hours Model 141T 6 1 INTRODUCTION SECTION Vi REPLACEABLE PARTS 6 2 This section contains information for ordering replacement parts The abbreviations used in the parts list are described in table 6 1 Table 6 2 lists the parts in alphanumeric order by reference des ignator and includes the manufacturer and manu facturer s part number Table 6 3 contains the list of manufacturers codes 6 3 ORDERING INFORMATION 6 4 To obtain replacement parts from Hewlett Pack ard address order or inquiry to the nearest Hewlett Packard Sales Service Office and supply the follow ing information A amperefs ASSY assembly 8D board s BH binder head BP bandpass y e C centi 10 CAR Carbon CCW counterclockwise CER ceramic CMO cabinet mount only COAX coaxial COEF coefficient COMP composition CONN connector s CRT cathode ray tube CW clockwise a si D deci 10 DEPC deposited carbon DP double pole DT double throw ELECT electrolytic ENCAP encapsulated EXT external F farad s FET m field effect transistor s FH
119. pi DUJEJSI j V per AEO E SA QGL ou 4 WOG PIE 99 EZOZ SARA UNOS Maj opuesia3 Ojej YES PON 7 AUD ESPR pm mg Laune 121069 mz TFT parra Reali ae Avnonun AYNOYHVd OOIX3W HOGYAJ3 D aam KUG OG PHG NAMH YNIINAONY Ka PRA VOIH3NWV HINOS ONY TVYLN3O MNO DAAH HARI oa otel on na m A POV BOLE WIA ez Pj ry 1PI9 I28 09 XML OLLE PODA USE 06 6 99 Gib ai g291 97 ton BL beer A MM ell a 209105 1499 zor ars 1 A Di dd epgugg Deg H nn 1901007 N D T di ana a A ECC CT NEM OI ei 295 018 pi BD 4 AN i PBUEPT VHi93131 SEH DD XML ES 4 Ln 0 69 522 19 Hal 926 ACH uiounieg 810 Hey Kadu LESO YGZ POD 194 Dre t dy Ri TIGGE RI 9129 888 gibi 81 91 SEU HIRE Uod 640 WA MENO 108 xog Od sawer iS THE VSA MANOIURA SXG 96 uoiOump3 gea 39 NIA Dag SRU H 542 AQ PADIA SDL peo lat 008 f 18 ANHAN CS FANS EA0D0 3 JES any ARNS UIM ZAVO 1 150 e f 120115 9762 PIT tepeueg PARA mit epeueg preuysedjajM8H DT epeuz9 Seed Uewen pri epeueg De DEMS MVY EPEUEJ Kleed Doan prt epeweg peard a Maki LA SANGUPOW eeng E DIA puto PIPE ame 2383n0 VLLODS YAON VROLNVI VIBN VIOO HSliliG viuagiv RK ECKE SQ ui p dn A ap PIO pokra VOVNVO N viona obeg ebiqa 3INY390 aen 65 08 Obra 889 a kaza BAOGE PASH se s ssa ppe E hom ka DEE ETH 61 1 686 016 XML Ed pun VOMVS NJIMI 94658 pore SHAXSOH
120. play on the CRT sereen b Persistence The length of time a single sweep written display remains visible on the CRT sereen intensity and sweep time constant c Store To retain at reduced intensity a dis play which has been written on the CRT d Erase To remove all displays and blooms that have been stored or written with persistence on the CRT e Intensity The brightness of a display as it is written on the CRT screen persistence and sweep time constant f Bloom A visible non symmetricalexpansion of a display written on the CRT sereen figure 3 5 g Fade positive Appears as random green areas on a dark background in MAX PERSISTENCE mode figure 3 7 h Background illumination A green cloud of illumination visible on the CRT screen figure 3 3 i Sweep time The time in seconds milli seconds or microseconds reguired for the beam to move horizontally one unit of distance division a cross the CRT s reen when writing a display j Fadenegative A condition in which a portion of the trace or screen begins to dim k Burn A burn is permanent damage to the CRT phosphor or mesh resulting from excessive in tensity being maintained for too long a period Phos phor burns appear as a discolored area on the CRT sereen Mesh burns appear as spots or traces that are darker than the background illumination in the MAX PERSISTENCE FAST WRITING SPEED modes 3 4 Model 141T 3 22 CONTROL FUNCTIONS
121. regulator and is normally biased off If an over load occurs across the 12 6 volt output the base of Model 141T gt A2Q10 goes positive by the voltage drop across Ril minus the forward voltage drop across A2CR16 turn ing A2Q10 on The collector of A2Q10 is applied through A2Q9 to the base of series regulator Q4 re ducing the current flowing through Q4 The current flows through an external overload which limits the current required to keep A2Q10 on Additional over load protection is provided by fuse A12F4 4 24 CALIBRATOR 4 95 The calibrator circuit figure 8 10 consists of three parts a tunnel diode square wave generator a transistor switch and a calibration network 4 26 Input to tunnel diode A2CR19 is applied through A2R50 The tunnel diode generates a square wave at line frequency Transistor switch A2Q12 is off during the time of the positive half cycle of the square wave when the voltage at the base is close to zero and the collector voltage is at a level set by breakdown diode A2VR6 and resistor A2R47B When the negative going portion of the square wave is ap plied to the base of A2Q12 the transistor increases conduction effectively shorting the collector to ground The output of the calibrator becomes zero At the end of the negative input half cycle bias of A2Q12 returns to zero the transistor is turned off and the output returns to its previous value 74 27 Tunnel diode bias cur
122. rent is supplied through A2R51 The bias current sets an operating level for the diode which affects the symmetry of the square wave output Cal adj A2R47B is used to set the de Theory voltage at the collector of A2Q12 to 10 volts when the transistor is off Breakdown diode A2V R6 reduces the output impedance and provides the temperature compensation for the circuit Voltage divider A2R54 A2R55 reduces the 10 volt output to 1 volt Both 10 and 1 volt outputs are available at the front panel of the instrument and the 1 volt output is available to both plug ins 4 28 HIGH VOLTAGE SUPPLY 4 29 Figure 4 3 is a block diagram of the high voltage power supply The output of a regulated tran sistor oscillator 1s stepped up in voltage and applied to a series of high voltage rectifiers The positive out put of the voltage tripler is connected to the post accelerator of the CRT The negative output voltages are used in the gun assembly of the CRT and its asso ciated controls The Z axis input can be used to apply intensity modulating signals to the CRT 4 30 Figure 8 13 is a schematic diagram of the high voltage supply and the CRT Oscillator A2Q12 operates at a frequency of approximately 32 kHz Any change in the output voltage is applied to A2Q15 which converts the voltage change to a current change This current change is applied by emitter follower A2Q14 to the base of the oscillator transistor The amplitude of oscillation
123. rols may be adjusted to permit viewing of edges j Set INTENSITY fully ccw k Disconnect oscillator 5 29 CALIBRATOR ADJUSTMENT a Perform preliminary setup paragraph 5 24 b Press STD e Connect 10V p p output of voltmeter cali brator to vertical amplifier input d Set vertical amphfier deflection sensitivity to 1 V div e Slowly increase INTENSITY to normal view ing level Adjustments f Adjust vertical amplifier vernier to display exactly 8 divisions of vertical deflection g Disconnect voltmeter calibrator h Connect Model 141T 10V CAL output to verti cal amplifier input i Set cal adj A2R47B to obtain exactly 8 divi sions of vertical deflection 5 30 PULSE CIRCUIT ADJUSTMENTS 5 31 FAST MODE ADJUSTMENTS a Perform preliminary setup paragraph 5 24 b Press FAST pushbutton c Turn INTENSITY and PERSISTENCE fully CCW d Set time base for single sweep so that sweep will not occur during this portion of procedure e Set fast write depth adj A5RI4A fully cew f Set fast coll adj A5R14B so that entire flood gun illumination pattern is visible g Adjust flood gun grid adj A5R14C to obtain most uniform CRT illumination The normal flood gun grid adjustment is at or near 0 volt A5R14C fully cw h Adjust fast coll adj A5R14B so that flood gun illumination just fills graticule i Set PERSISTENCE to MAX j Press ERASE k Adjust fast write depth adj A5RI4A slowly cw in
124. rsely proportional to storage time 3 26 When the STD WRITING SPEED is used pressing ERASE pushbutton establishes the CRT in a condition for variable persistence display of a signal that later can be stored Use the minimum INTENSITY and maximum PERSISTENCE required to obtain the desired display The STD and FAST writing speeds are the only configurations that a variable persistence display can be written 3 27 When FAST WRITING SPEED is used press ing ERASE primes the CRT storage surface to allow faster writing on the storage surface The display however has reduced contrast and fades positive more rapidly Contrast and storage time are also reduced 3 28 Pressing ERASE pushbutton removes stored or written displays from the CRT in either FAST or STD modes A display that has been stored or written at a high level of INTENSITY may remain Model 141T visible after ERASE pushbutton has been released Mt may be necessary to press and release ERASE pushbutton more than once to complete erasure of high intensity displays 3 29 Selection of CONV operating mode disables the variable persistence and storage functions and the instrument operates as a conventional general purpose oscilloscope Always adjust INTENSITY in STD mode with minimum PERSISTENCE so the dis play does not bloom then switch to CONV The PERSISTENCE control does not function in CONV mode 3 30 OPERATING PROCEDURES NOTE After applying power allow ins
125. s 0 3 25 amps 4 7 4 8 Model 141T Performance Check SECTION V PERFORMANCE CHECK AND ADJUSTMENTS 5 1 INTRODUCTION 5 2 This section contains step by step procedures for checking the instrument specifications as given in table 1 1 of this manual table performance check record is provided at the end of the performance check for recording the measurements obtained in the first running of the procedure This record may be used to compare measurements taken at later dates with the original The procedures for making all internal adjustments are covered in paragraphs 5 21 through 5 33 A photograph showing the locations of all internal adjustment controls is presented m figure 5 1 5 3 TEST EQUIPMENT 5 4 Test equipment required for procedures in this section is listed in table 5 1 Test equipment equiva lent to that recommended may be substituted pro vided it meets the required characteristics listed in be table For best results use recently calibrated A test equipment Use a non metallic screwdriver when making adjustments Table 5 1 Recommended Test Equipment HP 745A Voltmeter Calibrator Digital HP 3465A Voltmeter HP 204C Oscillator Accuracy 0 1 Calibrator Output Voltages 1V 10V Performance Check Calibrator Accuracy 0 1 Voltage Range 300V Input Impedance 10 2MQ Voltage HP K05 3440A Accuracy 1 Divider Probe Division Ratio 10
126. s is changed in such a di rection as to oppose the original output voltage change High voltage adjust A2R63 sets the amplitude of oscillation to produce the correct output voltage RECTIFIER TRIPLER A3 HIGH VOLTAGE TRANSFORMER A2TI TRACE ALIGN RECTIFIER A2CR24 OSCILLATOR A2013 RECTIFIER A2CR23 Z AXIS INPUT REGULATOR A2014 015 HIGH VOLTAGE ADJUST 14158 C 2 Figure 4 3 High Voltage Power Supply Block Diagram Theory 4 31 Two separate negative supplies are used one for the control grid of the CRT and one to provide the CRT cathode and focusing voltages Both supplies use half wave rectifiers A2CR23 and A2CR24 The un blanking gate from the horizonta plug in pin 1 J2 is apphed to the return side of the grid supply and changes the negative grid voltage by about 50 volts to unblank the trace A positive pulse of about 20 volts will blank the trace when applied to Z axis input When Z axis input is not used S4 is set to INT to re ceive chopped blanking from a dual trace plug in 4 32 The voltage tripler circuit provides the 6 6 kV post accerlerating voltage applies to the CRT 4 33 The ASTIG adjustment R8 adjusts the round ness of the spot and the geometry adjustment A2 R72 is used to optimize pattern shape 4 34 STORAGE CRT 4 35 Refer to figure 8 13 for the schematic diagram of the storage CRT V1 The CRT contains the conven
127. small increments erasing after each step until a good compromise between no light and saturated brightness is obtained on CRT after ERASE button is pressed l Adjust fast coll adj A5R14B in small incre ments Erase and readjust fast write depth adj A5RI4A step k between increments until uniform fogging is obtained m Set controls as follows sweep time 0 2 msec div A oc cca nindas vahen toe normal recurrent INTENSITY fully ccw PERSISTENCE MIN n Connect 4 kHz oscillator sine wave output to vertical amplifier input 5 5 Adjustments 0 Adjust vertical gain to obtain 8 divisions of vertical deflection p Adjust INTENSITY for normal viewing level a Inerease vertical gain by a factor of 10 Do not adjust INTENSITY r Set time base for single sweep operation s Set PERSISTENCE to MAX t Increase INTENSITY gradually while erasing CRT until beam writes evenly but not to point where beam is always on u Press ERASE pushbutton until no trace remains v Erase and immediately arm and trigger a single sweep The resulting waveform should be visible inside a 6 x 8 division rectangle for 15 seconds If not rotate fast write depth adj A5R14A clockwise until it is If CRT still will not hold trace for 15 seconds return to step g and reduce the illuminated area to no less than a centered 7 6 x 9 5 division rectangle NOTE The 7 6 x 9 5 di
128. t plugins for 0 5 ms SCAN mode and AUTO trigger d Turn power ON e Turn intensity limit A2R65 full ccw extin guishing trace f Set INTENSITY to 11 o clock position g Press STD pushbutton h Set PERSISTENCE to MIN i Turn A2R65 slowly cw until crest of trace is bright with rest of trace barely visible as shown in figure 5 14 1 CENTER 1 2 3 4 FREQUENCY 141T 003 Figure 5 1A Spectrum Analyzer Intensity Limit Adjust Model 141T 5 28 GEOMETRY a Perform preliminary setup paragraph 5 24 b Set controls as follows trigger level auto trigger SOUFCEe int sweeptime 0 5 msec div WRITING SPEED STD PERSISTENCE MIN c Slowly adjust INTENSITY for normal viewing level d Press ERASE e Press CONV f Adjust TRACE ALIGN and vertical position controls so that trace is parallel to center graticule line g Connect 400 kHz oscillator output to vertical amplifier input h Adjust vertical deflection factor to obtain slightly under 8 divisions of vertical deflection If it is necessary to increase intensity do so only in STD mode There is no indica tion of excessive beam intensity while in the CONV mode and CRT mesh can be burnt i Adjust geometry A2R72 for best compromise between distortion of vertical and horizontal edges of display Vertical and horizontal cont
129. tely rotate std write depth adj A5RI0A cw in 10 increments pressing ERASE pushbutton each time Repeat until CRT erases completely s If CRT will not erase completely adjust flood gun grid adj A5R14C slightly Then recheck the FAST MODE and STD MODE adjustments Repeat adjust ments of A5R14C FAST MODE and STD MODE until CRT will erase properly t Press ERASE Immediately arm and trigger a single sweep The waveform should be visible inside a 7 x 9 division rectangle for 60 seconds without positive fade screen turning bright green If trace is not continuous adjust std write depth adj ASRIOA cw in small increments until continuous trace is ob tained 5 33 This completes adjustment procedures If satisfactory operation cannot be obtained refer to Section VIII for troubleshooting information Adjustments Model 141T 100V ADJ A2R11B FLOODGUN FAST 100V ADJ 248V ADJ GRIDADJ COLL ADJ A2R11C A2R11A A5R14C A5R14B 2350V MONITOR POINT 4 INTENSITY LIMIT A2R65 GEOMETRY A2R72 HV ADJ A2R63 COLL ADJ 12 6V ADJ STD STD WRITE FAST WRITE A2R47B A2R47A COLL ADJ DEPTH ADJ DEPTH ADJ AbR10B ASR10A ASR14A 141T R 2 Figure 5 1 Adjustment Location 5 7 5 8 PERFORMANCE CHECK RECORD 141T nstrument Serial Number Paragraph Reference BEAM FINDER CALIBRATOR VARIABLE PERSISTENCE WRITING SPEED FAST STORE TIME FAST WRITING SPEED STANDARD STORE TIME STANDARD S
130. tely 100 Hz This signal is amplified through A5Q22 to drive A5Q12 and A5Q13 for an al ternating collimation voltage to better erase the CRT d The circuits remain in this state as long as the ERASE pushbutton is pressed 4 50 When the ERASE pushbutton is released the following circuit actions occur simultaneously a A5Q9 is turned off b The voltage on A5C8 begins to discharge from approximately 0 volt toward 12 6 volts 3 3V STORAGE MESH VOLTAGE n mmm mme mmm shir emm vm l zz 0 13SEC 1417 001 06 76 Figure 4 5 Erase Functional Waveform c The voltage change across A5R17 A5VR1 causes the output of amplifier A5Q7 A5Q8 to increase from about 4 volts The increase is in the form of a ramp to the output voltage determined by the standard write depth adjustment A5R10 When A5VRI is no longer conducting the ramp stops 4 6 Model 141T d A5Q3 is held in saturation by A5R7 This es tablishes the output voltage of amplifier A5Q7 A5Q8 e When A5C8 voltage decreases to 12 6 volts A5Q3 turns off figure 4 5 point F and the output pulser returns to the quiescent voltage of approxi mately 3 3 volts A5Q20 and A5Q21 stop running and the collimator voltage returns to the nominal value 4 51 Operation of the ERASE pushbutton when in the FAST mode is as described in paragraphs 4 49 and 4 50 except that the storage mesh potential drops less after releasing the ERASE pushbutton a
131. the trouble to one general circuit If both supplies are correct check the waveforms at test points shown on sche matic diagram figure 8 16 8 63 Check dc voltages to isolate defective com ponents in a stage where an improper or no wave form is present Conditions for measurements and waveforms for test points are given in figure 8 15 Model 141T H H Table 8 3 Schematic Diagram Notes Refer to MIL STD 15 1A for schematic symbols not listed in this table Etched circuit board Front panel marking Rear panel marking Front panel contro Screwdriver adjustment Part of Clockwise end of vari able resistor No connection Waveform test point with number Common electrical point with letter not necessarily ground Single pin connector on board Pin of a plug in board with letter or number Coaxial cable connected to snap on jack Coaxial cable connected directly to board Wire connected to pressure fit socket on board Main signal path Primary feedback path Secondary feedback path 925 P type base N type base Breakdown diode voltage regulator Field effect transistor Field effect transistor Unless otherwise indicated resistance in ohms capacitance in picofarads inductance in microhenries Wire colors are given by numbers in parentheses using the resistor color code 925 is wht red grn Black Brown Red Orange Yellow
132. trument 15 minutes warm up before attempting to make measurements Figure 3 3 Background illumination immediately after erasing with WRITING SPEED in FAST and PERSISTENCE to MAX Figure 3 5 Single shot ifaca bloom caused by IN TENSITY and or PERSISTENCE set too high increased amplitude Operation 3 31 These operating procedures will familiarize the operator with instrument controls and aid in ob taining desired CRT display a To improve persistence uniformity in STD mode adjust A5R45 STD collimator adjust This will reduce size of useable display area b For variable persistence operation use mini mum INTENSITY and maximum PERSISTENCE compatible with desired display figure 3 4 c Use WRITING SPEED in FAST mode only for fast sweep time single shot displays or to im prove uniformity of trace intensity FAST WRITING SPEED mode causes more rapid positive fading on CRT and reduced persistence or storage tlme d To store a display press STD pushbutton and adjust INTENSITY and PERSISTENCE for desired display and press STORE Figure 3 4 Variable persistence with a slow repeti tive sweep Figure 3 6 Single shot display with INTENSITY and PERSISTENCE set the same as figure 3 5 and _141T R 12 3 5 Operation Figure 3 7 Fade positive after 2 to 4 minutes in STD mode Figure 3 9 Same display as figure 3 8 after three minutes in STD mode e To view a stored display adjust TIME con tr
133. uo 338 awo 338 jowo 338 Jono 339 om9 334 gus 338 iqi 338 gid 438 E f pieoq aui jo apis daulje wo Bu p 82H NU BEE 2 Wa E apos spunad styj sejoy 3ueuoduroo 444 s BRIDE m gt yno paiejd sAey spieoq MII 526 XV OS LIRI POW f INALIS GT 8 J DUBYDS 2803 0A MOT 018 HNSI A3 21 zed prx 90 6 0 VE 28 iN3AY HI zr em iz Nid eat Aer 004 OVAE 9 82 aniv eco ee Ser F 9 anino az 8182 SPH usi gozz m pu oos 9 ne e A64 ESHZY AA Chay vibe gani qa PR i GZUZY O NDZY ZIWOZY GWO Y a nda up EN d A 9 3 UDZY 94DZY HHDZY S 26 9 zi RINA z Se Op 5 Mast i zz US CHEM SYM ep MN Ab O pika 4 u H3 LINTI SHATI HAL nano NA ao IN t f i SON psy IN A OBI MOOI AOOLA oe EECH p0 1D po A6 G 4896 Addit AZ ag W PEN SZW PZU 401010938 S3MIS k 6I40 189 9 Nld 20 EP zc s dck 4002 88O SHO Zu2l2I8O 1349 AOOI Em 69 10 9 19 4 anio KODI i nmv z SC O i i i ids rav o bek vijo Ph 82 merced C SNOLWNOISSG 32N 393438 A001 ECH sea AQOI e AS O2 i 00 e 06922 oc T NN TITRE Se NE BEN METE x AOZ N A A02 Meet I i d IEN EM AOO i m e gt T to wifes f gt oos CEN Metz UT 80 10 7 42
134. ure 5 1 a photo graph included at the end of the section on a foldout page 5 23 Use a nonmetallic screwdriver and recently calibrated test equipment with characteristics as spec ified in table 5 1 After adjustments are complete check instrument performance by doing the perform ance check procedure at the beginning of this sec tion If difficulty is encountered in making any ad justment refer to Section VIII for troubleshooting procedures 5 24 PRELIMINARY SETUP a Install plug ins in both compartments Prop er power supply regulation may not occur without load connected b Remove top bottom left side and high volt age deck covers All internal adjustments are identi fied in figure 5 1 WARNING Voltages present in the power supplies are dangerous c Rotate INTENSITY PERSISTENCE and STORE TIME fully ccw d Turn instrument on and allow 15 minutes warm up period 5 25 LOW VOLTAGE POWER SUPPLY ADJUST MENT a Perform preliminary setup paragraph 5 24 b Adjust low voltage regulators as indicated in table 5 2 NOTE Because 100 volt supply is a reference for the other mainframe supplies it must be set first Voltage may be measured on any terminal with wire color shown in table 5 2 c Recheck all supplies before proceeding The 100V supply must be set as near to 100V as possi ble 5 26 HIGH VOLTAGE POWER SUPPLY ADJUST MENT a Perform preliminary setup paragraph 5 24
135. v to i 978 B d I MOI hoy o 02 9 POA e i CR9 c3 OSU Bi Figure 7 1A Effect of Change li Changes and Options CHANGE 11 Table 6 2 Si Change to HP Part No 3101 0030 Qty 1 SWITCH TOGGLE SPST ON NONE OFF Mfr Code 27191 Mfr Part Number 8906K 368 Figure 8 10 Modify the input ac power circuit according to figure 7 1A CHANGE 12 Table 6 2 MP59 Change HP Part No and Mfr Part No to 00140 01206 MP74 Change HP Part No and Mfr Part No to 00141 00102 MP120 Change HP Part No to 1520 0042 7 5 SPECIAL OPTIONS 7 6 Most customer special application require ments and or specifications can be met by factory modification of a standard instrument A standard in strument modified in this way will carry a special option number such as Model 0000A Option COI 7 7 An operating and service manual and a manual insert are provided with each special option instru ment The operating and service manual contains information about the standard instrument The manual insert for the special option describes the factory modifications required to produce the special option instrument Amend the operating and service manual by changing it to include all manual insert information and MANUAL CHANGES sheet infor mation if applicable When these changes are made the operating and service manual will apply to the special option instrument 7 8 If you have ordered a specia
136. vision rectangle is the minimum rectangle size allowable for this adjustment w Rotate fast write depth adj A5RI4A cew in small increments Leave A5R14A at point farthest cew that permits trace to remain visible for 15 sec onds 5 32 STD MODE ADJUSTMENTS a Perform preliminary setup paragraph 5 24 b Set INTENSITY fully cew e Set PERSISTENCE to MIN d Set std write depth adj A5R10A fully cew e Press STD pushbutton f Set time base to single sweep to prevent beam from sweeping 5 6 Model 141T g Press ERASE for one second and release h Turn std coll adj A5R10 fully ccw and then slowly ew until CRT face is uniformly illuminated to within 1 mm of aluminized CRT ring around perim eter of CRT Collimator dimples may protrude up to 3 mm out from aluminized CRT ring but in no case may come into CRT graticule or nomenclature i Set time base for sweep of 10 msec div 3 Set time base for recurrent sweep k Connect 80 Hz oscillator sine wave output to vertical amplifier input l Adjust vertical gain to obtain 8 divisions of vertical deflection m Adjust INTENSITY for normal viewing level n Increase vertical gain by factor of 10 Do not adjust INTENSITY o Set time base for single sweep operation p Set PERSISTENCE to MAX q Increase INTENSITY gradually while eras ing CRT until beam writes evenly but not to the point where beam is always on r Press ERASE If CRT does not erase com ple
137. vo 9 D vi 01 91530 201 9530 201 91530 201 91530 201 KI 438 338 Gia 43H Quo dat R I LIPI IPON ADLAJSG 9530 530 1530 201 51530 91830 438 j Qiio 339 Gio 43H lors sas aus 338 pieoq su jo apis saya woy Bul pios 5 180 stu j sajoy jusuodwos uBnoiy i peiejd aaey spieog UNUD y Assy apoq uonooinuespy 1u2uodwo 6 g ainsi suono uuoo 19MOJ INdU A0tZ pue 7020 A001 100 LIPI I ES Syo eS lu9 vHO geg 3 11591 CO EH CO Oyo a ZUD 9i CO 682 LHD f ca 880 PO 2 A i SH2V 2puev icuzy ca LHO vo LO s2H2 V OZHO2V CIH22V GHOZV 23 280 Y8 O 2uoey ang Hoz v 9r 25 ld d 30313130 wi 2i MA PICO y jo apis ema woa Bu SSU PGH id 18pjOS SJiUiJAd siu s ou Juauodujos 8 vali uBnosyi palejd e eu spieoq HNHH Iso i i HNI ORO BuO SuO 2URZINO 10 697 zv L dv V A vc LI Y Oe2 YZ ASU v jg 8 LIPE PPOW 91 8 zy jddng 101 uoreoguuoep juouoduo0 11 8 9317 947307 i B 119 pi LINO co 912 va SHA i9 zsu 1D 99H bl oss t ves eT glu br SH zr so vo sro Huo 3 G O zi GHA ZH isu ted soy i 6vu seu t LH t vu cf vo SI va za sio PLO i4 vsa osu Za voy vi apy Z ZEH
138. y Description Mfr Part Number Designation Code Q684 1051 R FXD COMP LMEGOHM 1 1 4w 01121 CB 1051 058474721 R FXD COMP 4700 UHM LOK 174W 01121 LB 4721 8757 0480 R FXD FLM 432K Grit 12 L 8W 28 450 0757 0480 0634 4721 RZFXU COMP 4760 OHM 10 1 4e 61121 Ca 4721 9757 2439 RIFXD FLM 432K UHM 1 L1 BW 28460 4757 0489 97572791 RIFXO FLM 619K UHM 1 08 1 49 28480 0757 0791 0757 0475 RzFXD MET FLM 301K UHM i3 1 8w 28480 0751 0476 8761 0083 RiFXD MET GX bK Grim 5 lw 28480 0761 0083 0684 4721 R FXD COMP 4700 OHM 10 1 44 01121 CB 4721 0654 4741 RiFXO COMP 470K OHM LO 1 4w 01121 ER 4741 0684 1051 R FXD COMP LMEGOHM 12 L 4W 01121 CB 1051 0684 1041 RiFXD COMP 100K OHM 10 1 4W 01121 CB 104 0684 10 1 R FXD LOMP LOOK OHM 105 1 4 81121 C8 1041 0084 1061 R FXD COMP 10 MEGOHM LOE L w 01121 CB 1061 0684 2731 R PKD COMP 27K OHM 10 i 4w Olizi C8 2731 0584 1941 R FXD COMP 100K OHM 108 1 4W 01121 CB 1041 0584 2211 R FXO COMP 220 OHM 102 1 4W 91121 CR 2211 0654 8231 R FXD CUMP 82K ORM 10 1 49 01121 Cu 8231 0684 1051 RIEXD COMP IMEGOHM 12 1 46 01121 CH 1051 0684 1811 R FXD CUMP 180 UHM 10 L 4w likl CB 1811 0698 3647 RIFXD MET GX i5K GHM SE 2W 28480 0698 3647 0684 1041 R FXD COMP LOOK OHM 10 1 4w 01121 C 1041 0757 0473 R FXD MET FLM 22i1K OHM 1 1 8 28420 0751 0473 0634 1061 RIFXO COMP 100K OHM 10 174W 01121 C8 1041 0684 2231 R FXD COMP 22K DHM 10 1 4 Dlizl CB 2231 0684 4721 RIFXO COMP 4700 OHM 10 i 4w 01121 CB 4721 0684 683 RzFXO LUMP 68K OHM 10 1
139. z 3 9530 338 LIPI PPOW eotAJog 418 IYDULIYOS 98D4 0 VS EIS m514 SHO100 34IM ONY SNid N23N 189 6 807102 3HIM ONY SNid 135x205 LUI 011406 OI YW3HOS SIKL NO SiBVd i Stef 94 90 1 Ge Litl PESAS SdAH VIII BEE be 909 N 9NDINV 18 TETRA I Nid r i gt a ONI ANVIBNO EA i i COL elo OGEZ em wi 284 18H GOL N6v Z SAN 612 bA SA ZA 08 na ayas ONIXNVJE gt pg dOdNi Note wool Gadd0HD 7103 0 SIXV Z 100 984 IM pay 84H 0022 azao werte LLY TNNT IA Ser inane AN sumawa W s 328 te a iL NONA m m n 300H IVO cher IVA 9 NOD ONILIHM ii quoc WAFA Wertz Abby2 is bid AQ01 ZGONY 7055 a lt lt ow 8 2 la So i 912 1 2 mm mma BLLSY o KOSI Leg MIS 160 i ZLA zl NId If O PEL NI i NQ141031430 LAJA 6j O WZ Sar i vz Nid if teat AN Hil zi Nid NOIL231430 LUBA EM 1 NET af Y s 27 G ETag A Lei 12 SNAS 00073 0 UR nena I uns Goold gt DEO Oa m aaz 108 eege SES goli NN9 00014 7 b 29 uiu mm a Mmmm EN Ago Qv3 6 t MOLVNITTOD me 1563 i noore w 8 A Ima 1906 su Y vr s B A OH

Download Pdf Manuals

Related Search

Related Contents

保育器チェッカ - 株式会社メッツ  Conair CS69R hair straightener  Ericsson W21 Network Router User Manual  I2R Labs    PipStridertm User Manual  NEED HELP? - Sea Gull Lighting  Vantec VDK-PSU User's Manual  à la conquête du ciel _  Samsung HT-X810 Kullanıcı Klavuzu  

Copyright © All rights reserved. Failed to retrieve file