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HP Treadmill 4328A User's Manual

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4. E CRGO HANGERS ARAIN anra IL juu Ha GL SYS n SE EE x 2 GELEDE ESS DS AERE xf GET ing EI ene Ni Cd Power Supply PC Board Model 4328A Figure 8 11 TI enten ZI 0202022 ANY 357 017 X14 GNV ANIA 2086 OL QVE 101098110 0 YOA 0730 3 HaALLING 2060 LV so AHIALLOHY A prudoud SE SNOLLONDA HO 0 OL CT VET I NIddns HIMOA 11631 70 HOA 7230 ZA TVE 1003011030 2080 LV YO m ENV ONIE HOVLIOA 177 50803 3 xoxuo HOV 1080 MOSHO 8050 30 OVH TOGO HOV TJAH YE INV 23 CNV HOHHO BE O HOS Vs 238 388 YOLOATIOO OL HALLINH NH dO YO 2088 8 678 9IGEL HIA i MONHO PQ 14 3181 8657 ISPOIN 2018 89680 7 IPPON 2 GON vol EO 2018 1038 2013 suoneoo youoduroy ey Alquassy AOPEIJIISO ZT 8 9en3Lq EN HOSES 8 1 9 put gI g 5 111 86 H i i i UAM TE EMR ACT GUY Y FOV 1 1 3 3 1 3 9 CONV 808181 7 dOV L IOA 119 3388 GNV 3 SIA CNV sm CIV m d 1 1 HOUVHO LLY
5. EE 5 2 8 6 AC Amplifier P O A2 5 4 Power Supply Test 3 3 Troubleshooting 8 11 5 5 Out of Circuit Transistor Resistance 8 7 Phase Detector and DC Amplifier Measurements x Vas du ko esc et 0 6 P O A2 Troubleshooting 8 11 5 6 Safe Ohmmeter Range for Transistor 8 8 Modulator P O A2 Troubleshooting 8 11 Resistance Measurements 5 6 8 9 Power Supply Troubleshooting 8 13 5 7 8 10 Ni Cd Power Supply Troubleshooting 8 15 7 Etched Circuit Soldering Equipment 1 List of Reference Designators and bbreviations 6 1 LIST OF ILLUSTRATIONS Number Title Page Number Title Page 1 1 Model 4328A Milliohmmeter 1 1 8 7 Model 4328A Rear Internal View 8 8 3 1 Front Panel Controls and Connectors 3 2 8 8 Model 4328A Right Internal View 8 10 3 2 Rear Panel Controls and Connectors 3 3 8 9 Model 4328A Top Internal View 8 10 3 3 Operating Procedure 3 4 8 10 Model 4328A Power Supply PC Board 8 12 3 4 Probe Combination vvv x 3 5 8 11 Model 4328A Ni Cd Power Supply 3 5 Probe Installation oo o o o 3 6 PC Board tenen jas nes 8 14 3 6 16005A Clip type Probes 3 6 8 12 Oscillator Assembly A3 Component 3 7 16006 Pin type Probes 3 6 EE CCo zienden keen 8 8 3 8 16007A B Test Leads 3 6 8 13 Range Switch Assembly 4 3 9 4 Terminal
6. eer lines 5 5 5 48 General EEEE 5 5 5 49 Axial Lead Components 5 5 5 51 Other Components 5 5 VI REPLACEABLE PARTS 6 1 6 1 11000009 israel 6 1 6 4 Ordering Information 6 1 VII MANUAL CHANGES AND OPTIONS 7 1 1 1 0611657316 user 7 1 7 3 Special Instruments QE Ca 7 5 Manual Changes ee 7 1 7 7 Later Instruments 7 1 1 8 Earlier Instruments 7 1 11 TROUBLESHOOTING AND CIRCUIT DIAGRAMS Kur EE 8 1 8 1 Introduction rinnen 8 1 8 5 Troubleshooting 8 1 8 8 56116117511685 slandina 8 1 Model 4328 A List of Tables List of Hlustration LIST OF TABLES Number Titie Page Number Title Page 23 2100011680186 saan 1 2 6 2 Reference Designation Index 6 2 3 1 Characteristics of Applied Current 7 1 Backdating Changes 7 1 on Samples and Maximum Power 8 1 4328A Overall Troubleshooting 8 5 Dissipation eos 3 5 8 2 Oscillator P O A3 Troubleshooting 8 7 3 2 Maximum Values of Resistance and 8 3 Schmitt Trigger P O A3 Length of Lead Wire 3 7 Troubleshooting vacia a 8 7 5 1 Recommended Test Equipment 5 1 8 4 Flip Flop P O A3 Troubleshooting 8 9 Linearity Test en 5 2 8 5 Limitter P O A3 Troubleshooting 8 9 9 3 Full Scale Test
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13. 83 0 L 8 3184 0667 Model 43284 Section VIII Figures 8 5 and 8 6 T 30 T302 Al ASS Y OSC BIAS ADJ 260 R306 OSC LEVEL ADJ A3 ASS Y Model 4328A Left Internal View Figure 8 5 t am necemo s _ VL 3 AT Vi Ds YA A AdO OSO 1 110 UHUINOTYH SLNAWNALSNI LSS L SALON L 8 3718 3 37 11 11 11 Od ONY 10083000 8 58 SEIS V se GVd wm OIA dI 1 8 8 HOHHO CNV 1 8 3 HOLVIDGONW ANV en IVE 231173171 OG 23710122 22 1281 457 71810381 AJHH DO LL 1371 23282 7210310381 7 ONINNIDTE JO OL NUALIY I 9 9IABL HIA 8 SWHOAHAVA HOJHO N x Me 978 37198 L HALAI ANY z HALLISNAS ASVHd 5 8 OL 778 3 18 303 111250 2103830 ZOEL INV 8398901 0 HOA 0723 7 00 V A 9 8 21 15 SE YOLVIACON 7 L a NYOAHAVM XC 8 3 Lev 710053 62 x HHH LONA V 3 111 3 5 8 OL 678 HIVE HOLV IIIOSO MOXHO SLNENO 017100 ALTAVA ISHA INV 102720 WALI SIHL 21351113 x LV 9088 710 0017100 8 13 00032 ALIN A 530 10 0 AO CI V C HOVIdAY 1021 CNV ANIA 820835 083 77 2 809032 wood 1 6080 8 AA E 3 L
14. Digital Voltmeter DC Voltmeter Range 0 1V Accuracy 0 2 Range 1 80 Accuracy 1 YEW Type 2782 or YEW Type 2792 and GR 1433 U Decade resistor Full scale checks and calibration Tracking checks calibration at 1002 range YEW Type 2786 or GR Model 1432T Decade Resistance Box Troubleshooting HP Model 412A Troubleshooting HP Model 3440A FE ins 7 ER HP Model 180A er ens uV em ec n Vert Plug in Oscilloscope Sweep time 0 5 ms cm Troubleshooting Model SAS A 5 1 Section V Paragraphs 5 11 to 5 22 9 11 MAINTENANCE 3 12 Service information in the form of trouble shooting waveforms schematics and component loca tions are given in Section VIII Also an overall sys tem block diagram is included which contains keyed numbers corresponding to the test points 3 13 43284 PERFORMANCE CHECKS 9 14 The performance checks presented here are front panel operations designed to compare the Model 4328A with its published specifications These opera tions should be conducted before any attempt is made at instrument calibration or adjustment During per formance tests periodically vary the line voltage sup plied to the Model 4328A 10 on either 115 or 230 V operation A 1 4 hour warm up period should be al lowed before these tests are conducted 3 15 MECHANICAL METER ZERO 5 16 If necessary mechanically zero the meter movement as follows a Withinstrumen
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24. strument case able to withstand voltage up to 500V dc insulation resistance 10MQ or over it is possible to measure the resistance value of a sample having de voltages relative to ground by connecting directly to it 3 29 The dynamic resistance of elements whose V I characteristics show non linearities such as diodes may be measured at an arbitrary DC bias point In this type of measurement note that the maximum voltage 1 kHz applied to the sample is 0 2mV peak or less 3 30 RECORDER OUTPUT 3 31 A RECORDER terminal is provided onthe rear panel of the 4328A providing ade voltage proportional tothe resistance of the sample permitting recording of consecutive tests etc 3 32 PROBE CONNECTIONS 3 33 General 3 34 In Model 4328A measurement is made by the 4 terminal method special two terminal probes that can make 4 terminal measurements 16005A Clip type Probes and 16006A Pin type Probes and con ventional4 terminal testleads 16007A B Test Leads are furnished and can be mixed or matched depend ing on sample type For example in the case of measurement of the contact resistance of printed cir cuit board connectors it is usually convenient to use a combination of the clip type probe and the pin type probe as shown in Figure 3 4 Figure 3 4 Probe Combination 3 5 Section 7 Model 4328A Paragraphs 3 35 to 3 46 D 3 35 Probe Installation 3 36 Plug in the probes to the connector at the end of 161
25. A3C310 A3C311 A3C312 A3C313 A3C314 A3C315 A3C316 A3C317 A3C318 A3C319 A3C320 1 A3C322 ASCRi ASCR300 1 72 A3CR303 A3CR304 05 6 A3CR307 8 A3CR309 A3CR310 A3CR311 A3CR312 ASCR313 A3CR314 6 6 Reference nationi _ Stock No 04328 7034 04328 8707 0180 0978 0180 1029 0160 1548 0160 1548 0170 0084 0180 1029 0160 1554 0180 1029 0180 1029 0180 1029 0160 0134 0180 1029 0160 1563 0180 1029 0150 0121 0150 0121 0160 0127 0180 1029 0160 1542 0160 1542 0160 1544 1902 3125 1901 0040 1901 0040 1901 0040 1901 0040 1901 0040 1901 0040 1901 0040 1910 0016 1910 0016 1901 0040 1901 0040 1902 3150 1910 0016 OSCILLATOR ASS Y BOARD BLANK P C NOT ASSIGNED 00902230 UG OT ASSIGNED 3030 9999009 9090992 NOT ASSIGNED SEMICON DEVICE SEMICON DEVICE SEMICON DEVICE SEMICON DEVICE SEMICON DEVICE SEMICON DEVICE SEMICON DEVICE SEMICON DEVICE SEMICON DEVICE SEMICON DEVICE SEMICON DEVICE SEMICON DEVICE SEMICON DEVICE SEMICON DEVICE FXD TANT 1uF 77 FXD TANT 1uF 20 7 FXD MY 0 224F 10 200VDCW FXD MY 0 22uF 10 200VDCW FXD MY 0 068uF 20 50 VDCW FXD TANT 1pF 20 15VDCW FXD MY 0 4TuF 10 77 FXD TANT Lup 20 15VDCW FXD TANT 1uF 20 15 VDCW FXD TANT 14F 20 15VDCW FXD MICA 220pF 5 300VDCW FXD TANT 1uF 20 15 VDCW FXD MY 0 47uF 5 200
26. Add A7R405 0683 4725 R FXD COMP 4 TKQ 5 1 4W Add 781 3101 0247 SWITCH POWER PUSH BUTTON UEG 42L Add A782 3101 0249 SWITCH BATT TEST PUSH BUTTON UEG 421 Delete Ri 0757 0476 R FXD MET FLM 301kQ 1 1 8W Delete R2 0683 4725 R FXD COMP 4 7kQ 5 1 4W Delete R3 0683 3335 R FXD COMP 33kQ 5 1 4W Delete 82 3101 0272 SWITCH TOGGLE ON OFF ON Delete S3 3101 0273 SWITCH PUSH BUTTON BATT TEST Delete DS1 2140 0015 LAMP NEON NE 2H Add DS1 1450 0048 LAMP LIGHT IND RED Page 6 12 Table 6 2 Change HP Part No of Wi CABLE ASS Y POWER to 8120 0078 Add W3 04328 7202 CABLE ASS Y 7 4 Delete XA1 1251 0135 CONNECTOR PRINTED CIRCUIT 15 CONTACTS Model 4328A Section WHT SRA REG 1 BOY ORN MSN We 230V wo ar POWER SWITCH A7 ASS Y 04328 7055 i WHT ORN EE WHT YEL i 4 WHY Fo ACK 3 i t RED GRA Mi G CO HV J 405 2 FROM AUZ 47k 1 W 2 FROM 1 5 FROM 11 4 REDS vid i3 5V WHT RED pu FROM 1 TT EE CHANGE 11 Page 6 2 Table 6 2 Change HP Part No of METER TRIM to 5060 7638 Change HP Part No of PANEL FRONT to 04328 1121 Page 6 12 Table 6 2 Change HP Part No of CABLE ASS Y PROBE WITH CONNECTOR MINT GRAY to 04328 7127 Delete 16143A PROBE CABLE CHANGE 12 Page 6 9 Table 6 2 Add A48101 3100 1134 SWITCH RANGE ROTALY De
27. ILA 52 u 0348085 HO4 0 0 38 evxo a E vu 435 BONVY 4 JNONWOD O4 1934534 HAM 538084 N3dO ONY 034 8085 30 SNOLLIONOS 8130800 Q3NIVLSO 83911 i i gis WOH 4 Ag ma Oe LOYANOD ON pn 49 et er ALON 1 7 912 4 f LINDO vere 8022327 10313730 A i LENS 202g PEEN NIG DAE EOL VOEL Ge Jen g E Ag E xos 1018 2 YIS WOM3 Of ACI Eh SAE SNOLLVNOISIO 22333 0 l is JA e Wei 4222 Age i SIEB i i WEE H oh j 251 d lee ACHE Fool a TEN FIS en Te CEN i HIM c 1 2E N Nit 7 iH 1 EE NN EE Ee m fe l E UM ona e TEN 6 4G SS geg EE F gt o j KEE YEDIOL zig i om f ec pa Ps 9013 7 i ES Pit 9 23105 E 3 0 4 1 2 1 50 LES i O1 EN 065 Gel j OSI 6 gt BOI t i 8 Nag 038 yero 4 E O Geen ech eg 217 1 0 ES EFE Coor ei 2 6 os N i T 8 M 1822 8085 oiu 9 dil 0235 HES
28. Number Name Assembly changes wen mt mS mn Qum opge da rx HAS ae mm AI RECTIFIER ASSY J2 mounted on Rectifier 05100 6031 13 not mounted Assembly A25 Assembly re on Assembly A25 Numbers indicate Part of A25 Pins of 2 2 TI un 5 6 ASPIUS i i 31 supplied 5 from 3 to Pin 6 3 of Pi on Assembly AS Terminal Connector 7 Numbers Pin Numbers Figure 8 1 Schematic Diagram Notes 8 2 51 97 0 56 06 23533313531 77 GIdlcV nduj 353111 ID 8 PIALZV 4399181 8 296 7 uonounf 808113 2053 Tid Lev 713008717100 0167 2 6 25 8 6 5 agva 6381 3878 6000 SELEY 8423020 i 40193130 ASVA 7 LALZV ASYA ZIEDEVY 9d LEV M V CALEV NIE Pd L8 V asya 7 Cd LEV HSV 7 6 MALLING 77 Ta Lev SSION 9 11106 1507 350 31500 23 19480323 9 19631 11100 1 0111500 S LO 0 5 TOEO JOCO LOCHI OLYO NOWINOO LINDUIO 91 1733835 YM opeur 11350334088917 HAAY 32087023001 JOdNi 1 ASANA HIMO 2 NIVO jop Seas In 393 0 1256 1 y snfpe pue s qodd 3803438 8 1 DAN Sim 391103 Jo 939 9 e 1080 SWLIOJSAEM 3 185040 OL E somgur uos UI UMOYS SUOHIP 9160 58 03 9 ut 9383 04 ps41oys pue uedo sogoad
29. TH ASI OG MOSHO THAT Od 832033700 yo u 6080 7 w 8086 3103210 td Lov SV HWVS any anta 2 AL EV 7 0531 74320 MOSHOSM ANY HO SI E HOEVE IEDSO AI HOH MOHO ONILOOHS3IT8NOYL V O d 839981 LLIWHOS 5 8 3184 11 85 11 6 1173 ANV INHNOdWOD ALINVA AOV 10 NOLLOSNNOO 6 18380 HO en Nado HOA 3 LNANOdNO9 7103171038 7 ALTOVA qvg ONINNIDAG HO end ANY 493 OL 85 O d LEVY 7 303 38 9 MDHHD 303108371100 ANV aSVd 6180 LV HO 10 10 MOSHO 028 2 5101338717103 7 LIEUD ADHHO HOVLTOA 76232 0 2 510203717100 ANY ALTIVA um ESV LISO LV ams STC 87 2 16 31 HOVLTOA MOSHO 7327 LNYNOINOD ALTAVA 3 IdHa stan 8 9 11001153 189 101 V O d 4 313 41143 9 3198 8886 une 868 A MOTA 217911315 83 POW 8 8 POV 35 83 OW POV 0832 ray NUI 8oc2 522 CEG SE W E BUN COV LAGLNAO 938 POV 3 A SSV IV ASSY geo Geu 6 8 PUB 8 8 3 IA 56 eem em rte 833 ALT NYA CTV SI 830 3 2160 SESH qug ered 83883 7 712231255 7 DNINNIOHH YO OL 1 SLNSNOdWOO ALTOVA 9 d 309 17 TAAHT OG 7 x 7180053 3OSHO 188830 86183
30. ces E ANIYANG EE EE AO oe pre ets ANE ies pina 1 E o SC ac K 1 T DEC Hr mmer P ROS Kee 1924 CJ 08 0 IK Det dt gig teg P ROSTER ENE t hik iD KS kr MES PUE SCH 1 ne A 9705 ie See en are 7 1 MET geel Assy Hiks genre TEE EE stern Kl 1 LIM IA AURORA AB GLE LANA OO Nado BOs 038 6535 Ke GSO ONIQVTS HIVE ee Oe erte 1 MEE Ux QE ABI BONY CANDADO SL 4230538 Hii Sis Nado Gay 34 45 SRLS ESA GINIVLGT G ns A T 5 E SIT MES h 7 uotyog LABRET apoyos Arianp pue Lis uoompeq RE amp yddes op 3932 1 gig SOLAR ELH EU X033 SEKR SD EEN S Sui dnoo 2861 8 1163 Done aia 10 np NO SERIO SE 0 H2 SOU DOID OU SHARP MNO pue painos op STEO OPI ost A Up 9289491485 ASIC 5 LISO 109091109 e vager st yndyno Joss ay WAYS 0101834 0 0 23 89257 10123 SEEN pur PILO 40 eSeyoa asey pur 70977410 45 mimo papoa su SI9UY LEED Gaga euis su 10 1171 HAT 83 pardnos 0 eSou oy sdy PIgHO 5 8 Pigo Pla regipd
31. must be cognizant of temperature ex tremes while charging the batteries Do not charge batteries when temperature is above 40 C 3 10 Instrument Temperature Range 3 11 Model4328A Option 001 has certain temperature limitations Operating temperature upper limits for battery operationare lower compared with convention al ac operation 0 C to 50 C Internal temperatures inexcess of 50 C are quite easy to obtain if the instru ment is left in the sun even if the air temperature is quite moderate A good practice is to be certain that the instrumentis not stored or operated in direct sun light to avoid the possibility of reduced performance Keep this limitation in mind when operating in field conditions to obtain safe and stable operation CAUTION Nickel Cadmium cells in this instrument are hermetically sealed Damage to cells may occur if exposed to extremely high temperatures above 50 C 3 12 MEASUREMENT 3 13 Measurementis made by the 4 terminal method to obtain accurate measurement of low resistance actually two 2 terminal probes are used so that opera tion of the instrument is quite easy The probes fur nished in Model 4328A are 160054 probe 160064 probe and 16007 A B conventional 4 terminal test leads 3 14 Under no conditions will voltage across the sample exceed 20mV peak even in the case ofincor rect range settings When the correct range setting is used voltage across the sample is less than 200 pe
32. to ac 115 230 source when power switch is 2 Ee 7 and GND in ON or FAST CHARGE positions When the i pilot lamp glows Option 001 batteries are Do not superimpose DC voltage above charging continuously sample limits 5 BATT TEST Push on off switch non lock 6 Mechanical Meter Zero Sets meter suspension a battery test is made when the push button is so that meter indicates zero To adjust the zero depressed irrespective of the position of the f ON OFF FAST CHARGE switch a Remove power from the instrument 4 RANGE Low resistance measurement range b Turn the adjustment screw clockwise until selector select ranges from Im full scale to the indicator falls below zero and comes 1000 full scale back up to Zero again c Turn the adjustment very slightly counter clockwise to free up the mechanism from the adjusting peg Figure 3 1 Front Panel Controls and Connectors 3 2 Model 4328A RECCOER ES QJ V FUSE 07 1 Line Fuse Select fuse to match line voltage in use For 115V ac or for 230V ac use 0 1 amp siow blow fuse Power Cord Input Use power cord provided HP 8120 1378 Line Power limits are 7 230 ac 50 60Hz Check FUSE rating and position of line voltage slide switch before connecting power Line Voltage Slide Switch Set to line voltage available 115 or 230V ac 50 60Hz Section IIT Figure 3 2 RECORDER OUTPUT 0 1 de output is ob tained at full scale meter
33. yw NIIODEM AN G ng beers FL 2355515 5892 BL DO DEB 89 Q 4 Deus y ae PYTANY w 39 opd 23383 FALTA IAE 0 5088 Boor Bea IAD 39098 i APG RIT 92 4 2994118914 5 952 64 y OSENIG ti ARA 54 4 3 3 51 08 aos PAUS Zwang exediuee OG PS ur Diane K EE moss y E 4 95 ER Samang opeen 1 RIB een SRI 83 YABO wi SFE 855155 00 208 02008 See oa Or NORGE WAN 30 Of 2017 FERT 0668 852 HART 30 4 xou ore o2 Sp een pon 25 Koyot FANS 2351422 0 1 TS LZZ 8 43 a pl voc ODIAN KONTER Segle DES 0 PAID 12009 z L Agung 10900 Susi Kal Prof gelang amel A OCA y P vin Ada Like om TULL 12420 M ad ang SEARS RT 2 OR 2 PAVEN ZEG A FEN EH FESLA HO 5565 557 cal 1 Sul 0A301 2 145 VLZ AEN 365 de 542 HIE 7 TOD J I TIN 922823 05 RIAS 1084 554259 0 0 24 GIF Gan Lt AINE AD SH zaden 7 RAR EP 589 17799291 mi NYTAN NK a
34. 20 7 FXD TANT 1 20 77 FXD TANT 1 20 15 VDCW FXD TANT 7 1 20 15VDCW FKD TANT 1uF 20 15VDCW FXD CER 1 6 20 25VDCW NOT ASSIGNED SEMICON DEVICE DIODE SILICON SEMICON DEVICE DIODE SILICON SEMICON DEVICE DIODE SILICON SEMICON DEVICE DIODE SILICON NOT ASSIGNED SEMICON DEVICE DIODE SILICON SEMICON DEVICE DIODE BREAKDOWN 9 09V 2 400mW SEMICON DEVICE DIODE SILICON SEMICON DEVICE DIODE BREAKDOWN 9 09V 2 400mW SEMICON DEVICE DIODE BREAKDOWN 11V 2 400mW NOT ASSIGNED TRANSISTOR NPN SILICON TRANSISTOR NPN SILICON TRANSISTOR NPN SILICON TRANSISTOR NPN SILICON TRANSISTOR NPN SILICON TRANSISTOR NPN SILICON PAIR NOT ASSIGNED TRANSISTOR NPN SILICON TRANSISTOR NPN SILICON See list of abbreviations in introduction to this section 6 4 Model 4328A A2R200 A2R201 A2R202 A2R203 A2R204 A2R205 A2R206 A2R207 8 A2R209 A2R210 A2R211 A2R212 A2R213 A2R214 A2R215 A2R216 A2R217 A2R218 A2R219 A2R220 A2R221 A2R222 A2R223 4 A2R225 A2R226 A2R227 A2R228 A2R229 A2R230 A2R231 A2R232 A2R233 A2R234 A2R235 A2R236 A2R237 A2R238 Stock No 0757 0460 0757 0465 0683 1045 0683 1335 0683 2035 0683 7525 0757 0460 0757 0465 0683 4735 0683 5115 0683 5635 0683 6845 0683 7525 0633 1825 0757 0960 0757 0461 0757 0461 0757 0960 0683 1035 0757 0465 0757 0465 0683 8235 0683 1045 0683 2035 0698 3160
35. 6 4 Table 6 2 Change A2Q209 to HP Part No 1854 0071 Page 6 7 Table 6 2 Change A3Q301 and A3Q308 to HP Part No 1854 0071 CHANGE 20 Page 6 5 Table 6 2 Add A2R225 0683 2035 R FXD 20k2 5 1 4W Add A2R228 2100 3253 R VAR 50k 10 1 2W Add A2R229 2100 3253 R VAR 50kQ 1095 1 2W Add A2R230 0757 0453 R FXD 30 1kO 1 1 8W Add A2R232 2100 0558 R VAR 2019 10 1 2W Add A2R234 0757 0283 R FXD 2kQ 1 1 8W Delete A2R225 0698 3160 R FXD 31 6kQ 1 1 8W Delete A2R228 2100 0558 R VAR 2019 10 1 2W Delete A2R229 2100 0558 R VAR 209 10 1 2W Delete A2R230 0698 3161 R FXD 38 380 1 1 8W Delete A2R232 2100 3252 R VAR 5kQ 1095 1 2W Delete A2R234 0757 0439 R FXD 6 8180 1 1 8W 7 7 NOTES Model 4328 A Section 1 Paragraphs 8 1 to 8 13 SECTION VINI TROUBLESHOOTING AND CIRCUIT DIAGRAMS 8 1 INTRODUCTION 8 2 This section contains troubleshooting instruc tions schematics and component locations for the milliohmmeter Also included is an overall block diagram that indicates the location of test point in the instrument 8 3 Reference designations shown within circuit cardoutlines are abbreviated To find thepart in the Reference Designation Index use the full reference designation For example R305 on the A3 Oscillator Assembly is listed as A3R305 8 4 The Schematic Diagram Notes in Figure 8 1 pertain to all the schematics Additional notes on the schematics indicate tes
36. 8343 conto ctt 2 Jop TAY TT oss 37 440 E 2500 HG CUM ES eum ala Sog amato aer S27 PIDA Ume Sena k aon FAIT 848492 ESTO OFS NENE Ga EN E BG epe zer PET ANA 22 al DES 25043 ug gg DK KE D Bos 372275 y TDI PICA ELT 582 ITU 0 9 el Vo aan PALING NEN ien A 1473 EN 205 dutes 89 1 p EI PIT IN PLL Dee MOH EMT ONA y3 15 0 265201 im Cra 200 Aspen BAD OSG ensi PL 9 75 5 4 03 LLI pz C233 59 702 5 AN E EA PARRA ARAN ea 33 22 21 A2 YER U NEE PIT BTS AH RH 3433 DEZ paus EECH Pia CH I pase Weder 4 525 4 3 47 43 5 Kt ap enueg ce Ae BAD 97 BEN Tile 1 210 29087 65555 1 YJ 47087 SIRE ETS ARIES DAD u BASE H 3l 3 LS OO AuON Jy 525054 15507 7 3ZN3HLF50208Y33 91365571 TIG ESSE WES Tape PIPRA Jurist FOL test 955 HOE PRO Gii INT OSCE ys asl WIG EEG HEHE ia VE eger ea 995 dog WANE 225 e 2 21 80 HOME 1 42 34 0 Voir 3033 2 AN 13 VG kee ECOWAS Bra Au Ke EE cune QET JEEN ES E O 49 92 f i RPTL
37. 89 1 373 WED DUR Wa urges ISYS 3000 7 29 e te E eL I ca YD PISO Sdouna 9 Hines 799 45 3 51 EM or Cape 340 3 MH 21 CH passat ue MA 21 MES YOYNYD aM EMO ANDY Zoe ut EH UC TE sn A O Meed AP ONY GER veig al DEALAS REAR End n WED RSH 7 1103 3 gajes s opns 824445 SM3J1Uv000Y 3H laadt r agere e odd ns 25 Balk Sup 2 SEOUL sj ARO Es FS 94274 INIA 1392 ipe asp Ulla ESSO e AMA pr s gender saves Aren 10 eg bes Up dee pa be saugt 1 UES RUHE USR WNI 4 rad reat pdu qaddas n aij 542261 zl io age VAPH 919 22 miesi d Dinpoid iepa Ze ua on 3 UL 4511522379 fen Jay sotea supi 190044 alas m Nn II d y M ETA 4 soros en mme pres vor p 20010 em maen ween sn sose ven ADEVHO 430 NO 9 4 a n wr ALLL RARE s s mam vereer s veen Mitte te tt W uu Maias mm ereen
38. 9 23 15 MAG COL KEE E INRIA DRUTEN fF genere Sal 3 2 MLS RIO EASY 5 85 3 34 2 50 OF ard UL MEHR Gr n eS HATH 80 2 SEM AP gt 301623 PIE pega POH JON ER ann 30491 FHI 00098 41 88 92251 q FRITZ nin sta 2710322 wr 60 0911 8552350 Dd A AS EN 32 19 3 3 BIYA Zil sz 13082 OA grey Sees 970 1 ISRA 2 DE H ac Srt FH 7 E H 1090151 552 POTENZ 37 MPRII 2 UR Sef 27 E SDI SEE ei Ares 33 93 34 78 516 2 5158 np ac ung tue SRE ITY ae 2 DH FAR 23 ra MEE 2223658 et Vi YT 91923 3 7 023 Bri 99 5 S 324214 IDEA rer TRA AA or Say C APRES an 2 3 Reeg E 8 1 10 9 dam 3203 EH lane 5 ep AT bg 5 24 14 a A 42215 d n sun 89 62 2200 AHA 03 267 FIS HOS nb SD mide 0 Vers E ET GER 0 23 Gam HOM YF a gt 1523 7 285 4 9855 sap GEUR 893252 IA HENTES A
39. KSA CRYIN 2555 EECH OB pus 4 sits KO e qumo 8 Eed 953 U Edi BL RUMSEY HOLKCNGT NS Froome DIES e 2 STI 4 VEL 8 1 fire 30 2 15 ZO 02 ORM PAP Mie SAID EEL NALI RIIET ap CRJ ROY FEES 8 8 SGL ont 2239060 01 fag NS 752 7 YRA uris mpeg Nite U v pita 9 EUR UY IRAE Selma 2 AN 2 EN gt iss at CE IEE 3158 T OSL ise Ora BOONS pv 1580 uge A rapa NYH Yi D TRES S2228 mp 92 82 w EPI d WA 52 085 qug oos 3isi nz 3 0 Stop 01 7 124 ange sso gem 2 5 Sl 23 peue pes ttd Dui 66 5 232 159 rei 83355 98 GTi 8 BOO ATA 5 ag ONS KW VED ISE V2 SEIC 58 20825 5522 at 2 65 204 gt INGA Singers FERI 15 8 si 2 EE 161803 Nave n Hg ri aes po TRIE Mi YKIHYN 9 9 xod Aarsch n 4 5 937 Wei N DNK 2 Ser torem 8 Ss vii VENDA 222 sed eye near Qd TO e wung NS ER KO E E vidis nuv PEEL 7 Sg ey MIH SZ 112 M S 30 x5 2 228 211 015 PIRASK iie bop Sara VIDS Man
40. SEL KOE 2 Te Soc EA rosae SNO ONOH e ura tegit 29 591 112 D 692 PEG NO Ho ESRII YI 924 3 Lentz oul 623 11 0 3 250 196 211 A ies 2 LEASE pi 239 SNIK ki 5052 5 wir 0 2 ai SN3M3 vorser ED ust 2368 2 See CS eR Eun dr te gt JWE see ho Ge BEAN SRN 323349 uiopiurw payurr aas 3 88 3 349 WDE 254 C208 listo S ane 7 ke a 2 035 ENSING ENES Cx SH 0 we STL LEL PU perseg ind 32 u xweg 9593 MIRI 3944 lt pee 226 otses 225 Bows pipa gt z i BAAD MAYS dnt 30017 ungara has persa pasta ca 20 Pera Ori 992 5 s Saad 559 iF 5 60824423 HEE ROAD D NEIT PPD PIND iE Hita diB Hadas 36 5 PSP 47 FE 32 2485 MK zoen sys 09 9 nunoo Ag peonogeyd e 5386108 7 5 3013240 LUOdANS Y 9 sy 0 012213 223224 aE 2659 EG 1 Sindy 169873509104 052 3 0 0 aJldu5861z uo TURES WIEKE A AN YA 81658 2 Ss ORL 09 5 0995958 2 35 VASIG HOE TES 935912 PRESO 32 3812642 YL 29
41. are listed at the end of Table 6 2 HH FE 1 H H E H H s pn s H W U ofr 1 4 Hn 8 t H H H d H Table 6 1 assembly E motor F battery FL capacitor d coupier K diode L delay line M device signaling lamp MP amperes 8 automatic frequency control HEX amplifier EG beat frequency oscillator HR beryllium copper IF binder head IMPG bandpass INCD Drass INCH backward wave oscillator INS INT counter clockwise K ceramic cabinet mount only LH coefficient LIN common LK WASH composition LOG complete LPF connector M cadmium plate MEG cathode ray tube MET FLM clockwise MET OX deposited carbon MER drive MINAT MOM electrolytic MTG encapsulated MY external farads N fiat head N C fillister head NE fixed NI PL N O germanium NPO glass ground ed H d H Hx 32 8 U A F H H E D H H H EH H H d REFERENCE DESIGNATORS Section VI Paraeraphs 6 1 to 6 6 6 4 ORDERING INFORMATION 6 5 6 6 misc electronic part P fuse Q filter R jack RT relay inductor T meter TB mechanical part TP ABBREVIATIONS henries NPN hexagonal mercury NRER hour s intermediate freq NSR impregnated incandescent include s OBD insulationfed OH internal OX kilo 1000 left hand P linear taper PC lock washer PF logarithmic taper low pass filter PH BRZ milli 10 3 a meg 106 PND metal film metallic oxide m
42. base emitter junction Like the control gridof a vac uum tube this is the control point in the transistor 5 42 Tocheck atransistor first see if the emitter base diode is forward biased by measuring the voltage difference between emitter and base When using an electronic voltmeter do not measure directly between emitter and base there may be sufficient loop current between the voltmeter lead to damage the transistor Instead measure each voltage separately with respect to a voltage common point e g chassis 9 43 If the transistor base emitter junction is forward biased the transistor conducts If the diode is heavily forward biased the transistor saturates However if the base emitter diode is reverse biased the transistor is cut off open The voltage dropac ross a forward biased emitter base junction varies with transistor collector current A germanium tran sistor has a typical base emitter voltage of 0 2 3 volt with 1 10mA collector current and 0 4 0 5 volt with 10 100mA collector current In contrast base emitter voltage for silicon transistors is about twice that for germanium types about 0 5 0 6 volt for low collector current andabout0 8 0 9101 high collector current 9 44 If the emitter base junctions forward biased check for amplifier action by short circuiting base to emitter while observing collector voltage The transistor should stop conduction cut off which should shift the collector vol
43. deflection directly proportional to meter deflection Output impedance is approximately 10002 Cabinet Ground The recorder output is nor mally floating and Cabinet Ground terminal is tied to earth ground When recorder output is connected to the input of the recorder and when the recorder cabinet is not tied to earth ground the recorder cabinet should be connected to this Cabinet Ground terminal Figure 3 2 Rear Panel Controis and Connectors 3 3 Section IH Figure 3 3 1 Choose the appropriate probes or test leads and put them into connector on the cord 2 Meter Mechanical Zero a 3 4 With the instrument turned off rotate the meter adjustment screw clockwise until the pointer approaches the zero mark from the left Continue the clockwise rotation until the pointer coincides with the zero mark If the pointer overshoots continue rotating the adjustment screw clockwise until the pointer once again approaches the zero mark from the left Rotate the adjustment screw about three de grees counterclockwise to disengage screw adjustment from the meter suspension Model 4328A MILLIGHMMETER BATT TEST LI LINE 3 ON OFF m CHARGE f i 3 Turn 4328A LINE switch toON The LINE lamp glows when the instrument power is ON In option 001 the 4328 operates on its internal batteries whenever the ac line switch is ON When the l ne switch is in ON or LINE charg
44. it can be bench or rack mounted and is analogous to any full module instru ment 2 12 ADAPTER FRAME HP Part No 5060 0797 2 13 The adapter frame is a rack frame that accepts any combination of submodular units It can be rack mounted only 2 14 POWER CONNECTION 2 15 LINE VOLTAGE The Model 4328A may be operated from either 115 or 230 volt 10 50 or 60Hz power lines which can supply approximately 1 5 watts A slide switch on the rear panel permits quick conversion for operation from either voltage Insert a narrow blade screwdriver in the switch slot and slide the switch tothe right for 230 011 operation 230 marking exposed or to the left for 115 volt operation 115 marking exposed The Model 4328A is supplied with a0 1 ampere fuse for either 115 or 230 volt operation CAUTION To avoid damage tothe instrument before connecting the power cable set the 115 230 switch for the line voltage to be used 2 16 POWER CABLE To protect operating per sonnel the National Electrical Manufacturers Asso ciation NEMA recommends that instrument panels and cabinets be grounded Accordingly the Model 4328 is equipped with a detachable three conductor power cable which when plugged into an appropriate receptacle grounds panel and cabinet The offset pin of the three prong connector is the ground pin Pro ceed as follows for power cable installation a Connectf lat plug 3 terminal connector to LINE ja
45. of the instrument remove the screw that retains the cover b Grasp the cover from the rear andslideit back 1 2 inch Then tilt forward edge of the cover upward and lift the cover from the instrument 5 22 TOP COVER REPLACEMENT a Restthe cover flaton thecast guides projecting inward near the top of each side frame Table 5 3 Full Scale Test Standard HP Model HP Model Resistor 43284 4328A Meter Range Settings Readings 00102 Q 00306 0102 0306 102 306 02 2 gt YEW TYPE 2872 only Model 4328 A b Slide the cover forward allowing its forward edge to enter the groove in the front panel c Replace the cover retaining screw 5 23 BOTTOM COVER REMOVAL a Remove the retaining screw at the rear of the cover b Swing the tilt stand out to free the cover c Slide the cover rearward far enough to free the forward edge d Tilt the forward edge of the cover upward and lift the cover from the instrument 5 24 BOTTOM COVER REPLACEMENT a Set the tilt stand out of the way of the cover b Rest the bottom cover flat on the cast guides projecting inward near the bottom of each side frame c Slide the cover forward on the guides so that the formed portion at the rear of the cover slides over the two short projections atthe rear corner of each side frame d Replace the retaining screw 5 25 ADJUSTMENT PROCEDURES 5 26 The following is a complet
46. to this section 6 7 Section VI Table 6 2 Model 4328A Table 6 2 Reference Designation Index Cont d A3R315 086 7 A3R318 A3R319 A3R320 A3R321 A3R322 A3R323 A3R324 3 325 A3R326 A3R327 A3R328 689 A3R330 A3R331 A3R332 A3R333 A3R334 A3R335 A3R336 A3R337 A3R338 9 A3R340 A3R341 A3R342 A3R343 A3R344 A3R345 A3R346 A3R347 A3R348 A3R349 A3R350 A3R351 A3R352 A3R353 A3R354 A3R355 A3R356 A3R357 A3R308 A3R359 A3R360 0683 6835 0683 2745 0683 6835 0683 2735 0683 1235 0683 1315 0683 1845 0683 1845 0633 1025 0683 1535 0683 2025 0683 5125 0683 8225 0683 7515 0683 1325 0683 6215 0683 3935 0683 3935 0683 9125 0683 1245 0683 1545 0683 1025 0683 4735 0683 4735 0683 3625 0683 1035 0683 1325 0683 5125 0683 1025 0683 3625 0683 5625 0683 1535 0683 4335 0757 0968 0757 0960 0683 2035 0683 2035 0683 2235 0757 0968 0757 0960 0683 3945 0683 1035 0683 1035 0683 3945 0683 2225 2100 0558 See list of abbreviations in introduction to this section 222222 SASH DOAN WINNE WNN PA WEIDE PU DEUM FXD COMP 681 5 1 4W FXD COMP 270k 5 1 4W FXD COMP 6886 5 1 4W FXD COMP 27kQ 5 1 4W EXD COMP 12k0 5 1 4W FXD COMP 1300 5 FXD COMP 180k 5 1 4W FXD COMP 180k 5 1 4W FXD COMP 180 5 1 4W FXD COMP 1550 5 77 EXD COMP 2k 5 7 FXD COMP 51009 5 1 4W FXD COMP 82000 5 1 4W FXD COMP 7502 5 1 4W FXD C
47. unge ES 3288 ind Mice EN SN ne D E mers ae EM EE wei e EE AE oeii t as ENER RT ns d RR H a aaa GE p EE ov M a f 1 LA E 5 a i 5 B E S t ey 029 aay E 4 M AU E La Sr Ron EE 5 UE RE ENT ESCH 7 PEE o T M VANN 3782 39084 3 M m E v ent en mam re m de WN on TER D 1 EE EE E 2202 6 AS TT Ee at 38 53 Us a T Hy e 1524 0 i L 2 105 e e La I i 1 is E E E 7 5 Tr i D NEED 7 dii 3723 3 L Aur weet nennt taten a e goes mee mn E M MT en EE EE 1 1 i 1 V pe EN E i lt EENS E SORT anas t 2531 4j re 0 2 1 Tu t 64401883 an dus HOA G oq jo 3574310 2 AAO BIETE pur NO 91 FUSE uota eg pr ae iine lt 13781 s plaosd 605912 Sagan ng GONE 14 antes oup ts somde wuoysodoad I SE de K HOS 94 31 358 HUARD Hupguwuo WOI 7721 sey yori BUTTS 2g 01 31200 21213375 me i d 2919 aui AAs 207
48. y CHANGE 2 Page 6 6 Table 6 2 Change A3 Board Ass y HP Part No 04328 7034 to 04328 7023 Service Note Board Ass y 04328 7023 is interchangeable with Board Ass y 04328 7043 Page 6 7 Table 6 2 Delete A3CR321 Page 6 8 Table 6 2 Change A3R342 to HP Part No 0683 3325 R FXD COMP 3 3kQ 5 1 4W Change A3R344 to HP Part No 0683 4325 R FXD COMP 4 3kQ 5 1 4W Change A3R346 to HP Part No 0683 1045 R FXD COMP 10080 5 1 4W Page 8 17 Figure 8 14 Change a part of A3 schematic as OSCILLATOR ASS Y 04328 7034 R247 Figure 7 2 Partial Schematic of A3 Ass y Page 6 11 Table 6 2 Delete C2 1004F connected between Recorder output terminals Page 8 19 Figure 8 18 Delete C2 100uF capacitor 1 2 Model 4328 A Section 1 CHANGE 3 Page 6 9 Table 6 2 Change A4R112 to HP Part No 04328 8618 R FXD W W 750m 0 2 Change A4R113 to HP Part No 04328 8617 R FXD W W 490mQ 0 2 Change A4R114 to HP Part No 04328 8616 R FXD W W 430mQ 0 2 Change A4R115 to HP Part No 04328 8615 R FXD W W 414m0 0 2 Change A4R116 to HP Part No 04328 8614 R FXD W W 406m8 0 2 Service Note These five resistors mentioned above are not separately replaceable If necessary replace all five resistors as a set to the values shown in this manual Page 8 17 Figure 8 14 Change A4R112 to 750mQ A4R113 to 490mQ A4R114 to 430m90 A4R115 to 414mQ and A4R116 to 1 CHANGE 4 Page 6 6 Table 6 2 Change
49. 0 qug 810113 PICHO ae 883171302 HAMOd 7425 91 0 MOTHO GIES pO LY YO mam TRAM OC SIC 830 0 MOHHO x LOEUD 3 SININOANOD OL 323 ALTOVa quvOS Od 30 108 V LYSH OPEL HOHHO ANY 2 91 1100 5 3 04 V O d 33 111 5 8 3418 1 5 8 8 1 HIA uonoeg a GUGU y OT MIHHO ee wass CI VCI amm g v902O HO HOV TAN SIHANT OG MOGTHO BOED xouHo 20 080 INV NAA LHE 5054 HOM HO SINHO AH AVIA SOPHO A DIHdOHd SNOLLON f se SO e 3003 00 ONILOOHSI19N OYL ZV O d 01 8 8 318 AO 51 5 d ES SNYOAYAVM 71790 Of d INHOJWAVA HOSHO 318 9 8 OLNH lSH Aya 9 00 5 3 8 1 EV O d 3 4 07 Od 7 800020 En 3030 1063 TOZO LOLL 80 9 M 6 EV YO LOANNOO 235 VE lt 6 v L d L ZV SLNSNOdWOO NHOAHAVM 0 ALTOVA IV ADVIAHA 08 9020 JO 8153 37 DA 0 13 1 1 Od ANY 01 d Lev WHOATAVM HOHHO 911 0011537891011 V O d 8311114 SV 9 8 3 86 855 paeog 419668 omod vgzep 130017 8 940314 EE i ed A vir ESSEN N 2 EE SE SE 0 A 0 E 2 01 8 938913 IHA 8 LNINOINOD ALIOVA 28 ONY 2 310714313 qug HALEN SOTHO AQ 1 ONY ANIA YOLOANNO
50. 04328 8619 0683 2005 2100 0558 2100 0558 0698 3161 0683 4325 2100 3252 2100 0567 0757 0439 0757 0288 0683 3025 0683 2725 0683 6815 Table 6 2 Reference Designation Index Cont d Description NOT ASSIGNED mamm WINA WINN VIND mamm WUD WIND mm FXD MET FLM 61 9k0 1 77 FXD MET FLM 100kQ 1 1 8W FXD COMP 10010 5 1 4W FXD COMP 13kQ 5 1 4W FXD COMP 20kQ 5 1 4W FXD COMP 75009 5 1 4W FXD MET FLM 61 9kQ 1 1 8W FXD MET FLM 10080 1 1 8W FXD COMP 4750 5 1 4W FXD COMP 5100 5 1 4W FXD COMP 56 50 5 1 4W FXD COMP 680kQ 5 1 4W FXD COMP 75000 5 1 4W FXD COMP 180089 5 1 4 FXD MET FLM 33kQ 2 1 8W FXD MET FLM 68 1 0 1 77 FXD MET FLM 68 150 1 1 8W FXD MET FLM 33kQ 2 1 8W FXD COMP 10kQ 5 1 4W FXD MET FLM 100kQ 1 1 8W EXD MET FLM 100kQ 1 1 8W COMP 82kQ 5 1 4W FXD COMP 100kQ 595 77 FXD COMP 20kQ 5 FXD 31 6k2 1 1 8W FXD W W 430 5 FXD COMP 209 5 1 4W VAR 209 10 7 VAR 2019 10 77 FXD 38 380 1 1 8 FXD COMP 48006 5 7 VAR 580 10 7 VAR 280 10 1 2W FXD 6 81k9 1 1 8W FXD MET FLM 9 09k 1 FXD COMP 380 5 1 FXD COMP 27008 5 7 FXD COMP 6802 5 1 4W See list of abbreviations in introduction to this section Section VI Table 6 2 Note 6 5 Section VI Table 6 2 A3C1 0 1 A3C 302 A3C303 A3C304 A3C305 A3C306 A3C307 A3C308 A3C309
51. 1 eu 8 G6g2 Sniper 431 58911 1678161 131314 simo 5 st TOZHO vendels epou von E w AES false A Tes WX iig 10 29098 1133311 888 SOD COOLE are q MEH LH SE ZEZE 1 ZABEL 1 7 91558 py WO Y SATAY GF SE OF 77 D 3 41 i o ApWarIp nino goe sanoo FOUND senumedes sarap put 6020 03 padma H 6151 80 6025 jo jndino or eui pue ie BIA ins Jost E Nu Mod puwp duu S plA02d 1040110 TORINA gazd HOH 0 521960 ap st indino ov 11950 ayy 99 194 saloxa en 0 7 2 2 7 coco pus 1020 S 7 ee E i zu Gonzo gaoze Platano pre 74 sayddos 30784804 LOWES mom PEZA md SY e E DS ES C enira TOW 258394 oy 0 SINdno iv 532 3 2 88 2321 04 Arun pue VIO EE gg Ge t SCR isum de 25 reng zm vg GN 2 E T E Ce 1 E Ce we pa Gs Si Se ZE CERY ONS ES K 2 T EE boo DE Si 4 A 2 AA e 1 le GER SA Been pel ebe EE yet m mot l 7 Ra f pd Ex E 55 Q Lee SOLIDE MISI Let DY 2 MM I PN rr MU ES a E a E A 2 a m s m aero ASAY MEDIA J BSH Sek 8 Al 586 968 7 41 Ven e dp f D v A
52. 151625 600V 350mA A1CR302 1901 0230 SEMICON DEVICE DIODE SILICON 181625 600V 350mA A1CR303 1901 0230 SEMICON DEVICE DIODE SILICON 181625 600V 350mA A1CR304 1901 0230 SEMICON DEVICE DIODE SILICON 181625 600V 350mA A1CR305 1902 0049 SEMICON DEVICE DIODE BREAKDOWN D 19V 400mW 6 1901 0230 SEMICON DEVICE DIODE SILICON 181625 600V 4 AICR307 1901 0230 SEMICON DEVICE DIODE SILICON 151625 600V 350mA AICR308 1901 0230 SEMICON DEVICE DIODE SILICON 181625 600V 4 A1CR309 1901 0230 SEMICON DEVICE DIODE SILICON 181625 600V 4 A1CR310 1902 0049 SEMICON DEVICE DIODE BREAKDOWN 6 19V 400mW AIQI A1Q300 NOT ASSIGNED A1Q301 1854 0854 TRANSISTOR NPN SILICON A1Q302 1854 0003 TRANSISTOR NPN SILICON SIMILAR TO 2N1711 A1Q303 1854 0854 TRANSISTOR NPN SILICON A1Q304 1854 0854 TRANSISTOR NPN SILICON A1Q305 1854 0003 TRANSISTOR NPN SILICON SIMILAR TO 2N1711 A1Q306 1854 0854 TRANSISTOR NPN SILICON 1 1 A1R300 NOT ASSIGNED A1R301 0683 1245 R FXD COMP 1201 5 1 4W A1R302 0683 3925 R FXD COMP 3 9kQ2 5 1 4W A1R303 0683 5635 R FXD COMP 5686 5 1 4W A1R304 0683 5635 R FXD COMP 56kQ 595 1 4W A1R305 0683 1245 R FXD COMP 120kQ 5 77 A1R306 0683 3925 R FXD COMP 3 9kQ 5 1 4W A1R307 0683 5635 R FXD COMP 56k 5 1 4W A1R308 0683 5635 R FXD COMP 5686 5 1 4W A1R309 0683 3335 R FXD COMP 33k 5 1 4W MISCELLANEOUS 5040 3304 HOLDER CAPACITOR 2 REQ D See list of abbreviations in in
53. 2 7 t i El ENT 5 A A 25 1 3 Q NEE a AN A 90 I 9 mort une euet Ex oe NENNEN p Y 366402 DEES FER EE em T E ra I r I I GA I i p OLA CEA 3 3 ob So 4 1 r f 65 JO Lo srg pum xum GEM E ip Q d re i 8282332393 9981104 20 94 ALT 4 i 1 i H ae ajay 2 3912 1 i Poi 2 jo qual n3 oseQ ou i 9000 GOEN PUY LOEY WON Tebo 101410 aq 0136 Taine I 1 8 een FENGER PEUT RACED DEE i i ES jore CT naues AY E 05 0462438 Sie ROHS dee E nor 3190014 shear foa 2 3308 i 0 ane E 2 1 i rage amp iddns E SOLD 591 141431 eu ui 8919 49935 2 peop eui MES 5 gt gt we ps a FE PIOU oj SHES G uaatap st ange E 5 PES oui Ul Muay asirios suo DAD aya Jo jua Naaa sue gt CA 5 1989 3 i v A ne el a HOBO UO 501198 El oyeiodo ves xag cam 070 59101 N 5012192511 2 serias JE SUL up OPNI 989134 sava Hes ux M d ER t 2312 I i DH 6 1 93362 sur s tlddns zoe C teten pur GOCHI 00847 LOEUD 90845 MDMA Sprig Eg AOSTA 2109 05
54. 3 Model 4328A Waveforms 8 4 Component Locations 8 22 8 4 Model 4328A Waveform Test Point 8 21 Mother Board Assembly A5 ous se Minted dare ee 8 5 SE ou caa mE ed oe 8 23 8 5 Model 4328A Left Internal View 8 6 Ni Cd Power Supply Assembly A5 8 6 Model 4328A Bottom Internal View 8 6 dd auo re 8 23 11 i Model 4328 A Section I Paragraphs 1 1 to 1 10 GENERAL INPORMATION 1 1 DESCRIPTION 1 2 The Model 4328A Milliohmmeter Fig 1 1 is aportable instrument designed to measure low resist ance with speed and accuracy Covering a resistance range of 0018 to 1009 the instrument uses a Kelvin Bridge method to obtain high sensitivity Although the 4 terminal method is used to insure accuracy only 2 probes placed on each end of the sample are used in the actual measurement 1 3 To avoid measurement errors due to thermal emfs contact potential differences and electrolytic polarization the measurement utilizes a 1kHz signal and is insensitive to d errors 1 4 In the measurement of contact resistance of components used inlowlevelsignal circuits switches relays and connectors the measurement voltage ap plied should beless than 20mV peak so that thin insu lating films are protected from breakdown With the 4328A voltage across samples is less than peak on any range when proper range setting used and a maximum voltage of 20mV if inco
55. 30 21 Al 4328A MILLIOHMMETER AN y in RE Ki 7 0 7 rn ante SE EN Sen ME ERS E Eoo BES SALE SS AS V ATEN Sees SEAS EE iz 5 REN BEE ER E m 8 Bee QE PER PA TREE c ES ate ah HEWLETT PACKARD HP 0 CERTIFICATION Hewlett Packard Company certifies that this product met its published specifica tions at the time of shipment from the factory Hewlett Packard further certifies that its calibration measurements are traceable to the United States National Bu reau of Standards to the extent allowed by the Bureau s calibration facility and to the calibration facilities of other International Standards Organization members WARRANTY This Hewlett Packard instrument product is warranted against defects in material and workmanship for a period of one year from date of shipment except that in the case of certain components listed in Section 1 of this manual the warranty shall be for the specified period During the warranty period Hewlett Packard Company will at its option either repair or replace products which prove to be defective For warranty service or repair this product must be returned to a service facility designated by HP Buyer shall prepay shipping charges to HP and HP s
56. 43A Probe Cable Note that the probe plugs must be oriented correctly before plugging in 1 Connector at the end of probe cable has 2 contacts Each pair of closely spaced contacts comprise one set of probe contacts 2 Plug the probe pins in to the connector such that the off set side faces outwards Refer to Figure 3 3 Figure 3 7 160064 Pin type Probes 3 41 16007A B Test Leads 3 42 These are provided for standard 4 terminal measurements Eachpair of testlead hasa separate alligator clip voltage and current terminal 4 is furnished with a red cover the 16007B witha black cover The black test lead is the voltage terminal and the grey test lead is the current terminal See Figure 3 8 16143A Figure 3 5 Probe Installation 3 37 16005A Clip type Probe 3 38 General purpose alligator jaw contacts pro vide positive gripping of samples Upper contact marked V is voltage terminal and lower contact is current terminal When using this probe in 0 range itis notalways possibleto measure the sample because of extreme deflection of the meter Figure Figure 3 8 16007A B Test Leads 3 6 shows 160094 Clip type Probes 3 43 NOTES ON OPERATION 3 44 IN USING THE 1 AND 3m OHM RANGES CONNECTION OF CURRENT TERMINALS TO THE SAMPLE MUST BE A FIRM POSITIVE CONTACT 3 45 With Model 43284 the internal resistance of the constant currentgenerator is approximately equal to the set range x500 Therefore at 1m oh
57. 8 9 10 11 12 13 14 15 16 17 18 19 20 813 814 00301 to 00341 6t 12 13 14 15 16 17 18 19 20 8 9 10 11 12 13 14 15 16 17 18 19 20 818 819 00342 to 00440 818 819 00441 to 00730 9 10 11 12 13 14 15 16 17 18 19 20 1039 1040 and below 10 11 12 13 14 15 16 17 18 19 20 1210 and below 11 0 17 18 19 20 12 13 14 15 16 17 18 19 20 1233 and below 13 14 15 16 17 18 19 20 1334 02811 and below 1420 and below 14 15 16 17 18 19 20 1542304620 and below 15 16 17 18 19 20 1542304870 and below 16 17 0 17 18 19 20 El 542305050 and below 1828 305530 and below 18 19 20 20 1828306420 and below 7 1 Section VII Model 4328A CHANGE 1 Page 6 4 Table 6 2 Add A2CR205 HP Part No 1901 0040 DIODE SILICON Change A2R201 and A2R207 to HP Part No 0683 1545 R FXD COMP 150k2 5 1 4W Change A2R202 and A2R208 to HP Part No 0683 1045 R FXD COMP 100kQ 5 1 4W Page 6 5 Table 6 2 Delete A2R238 ER 7 Change A2R201 and A2R207 to 8 42 PHASE SENSITIVE AMPLIFIER ASS Y 04328 7022 Change A2R202 and A2R208 to 100K2 E R232 Page 8 19 Figure 8 18 Replace A2R238 with A2CR205 as shown 3 Gate CR204 5 R224 LIN in partial schematic Figure 7 1 ADJ R234 Figure 7 1 Partial Schematic of A2 Ass
58. 8 Y 1023 116 0 23 1 Y IPON gozHO PUL COCA MIETE Ren T 1 e ut U32312 Amen Oui SOAP Jogepnpotl 6025 10300309 esrud ou 59 53 PUE 2062 7 i ae 2 qos gt Pc CTO HECK 93 Ges 2 10104017 i 23 51272 NALDO i i KEREN z 4 56 s S S2LNOBS HOS SWIQVZH xg Y vul CN E i t 535 agnya CEL INNO OL 1034830 s TE x PEINE 14s SEDA NE ee 848 30 i E E 4 5 H apis Uo t CE ED WE E E tu IRAE Ba SMOLLIJNCO HEINE 5 SIMIGA 7 s 1 38 335 OE OA TA DE KE EE H cl er Es 500 MES ESEE GESTE GO pantus Wap QW Lu sau ATR d HINA GER Just ppu 2 5 gogo xowdpos ostyei u eprtaotd Hot LOZO H eseyd 22ousis oi ong Gi 01 8658 909212 7033091 19249 snipe 2395 04 jndjno 48 40023 ay snp 019 31801 oU 91 pisa SINE 03 perpiaos op si 0 d 099999 7 EN E Wy A Y z 5 Tea y UE Ee TEX aes mam S REZA HRD zaam put 4038905091 POH ayy 20 somos 8 HHH pozo pordaoo am 89385 1920 50 8 293 52295 d 202024 ege 9343130 1sn pg 515 gt 5 1 04 10398
59. 98 3157 0757 0464 0698 3455 0698 3444 3100 1173 Description NOT ASSIGNED TRANSFORMER OSC TRANSFORMER RANGE SWITCH ASS Y NOT ASSIGNED R FXD W W 0 52 0 1 1 4772 0 1 4 940 0 1 14 850 0 1 49 60 0 1 148 82 0 1 W 497 12 0 1 ET FLM 1 492kQ 0 1 7 zzz T ELM 5k2 0 1 1 4W T FLM 14 11kQ 0 195 1 4W T FLM 51 1kQ 0 1 1 4W W 560m2 1 W 390mQ 1 2752 zz Ej 59 a z x W W 330mQ 195 MET FLM 3162 1 1 8W MET FLM 1 10kQ 1 1 8W Hj Hj xb arr mb fb 88 86568 5585885 BEES 55 MET FLM 6 19k9 1 7 MET FLM 19 6kQ 1 1 8W XD MET FLM 90 9kQ 1 1 8W XD MET FLM 26110 1 77 FXD 3162 1 1 8W daa nn R R R R R R R R R R R R R R R R R R R R R R a hd D hd 4 D hd D D hd D NOT ASSIGNED SWITCH RANGE ROTARY See list of abbreviations in introduction to this section Section VI Table 6 2 oes 6 9 Section VI Table 6 2 A5C1 A5C201 A5C202 ASTI A5T302 A5T303 ASXAI ASXA2 3 A6BTI AGBT400 A6BT401 72 A6BT403 4 A6C1 A6C400 6 401 A6C402 A6CR1 AGCR400 03 f A6CR402 A6CR403 A6CR404 A6CR405 A6CR406 A6CR407 A6CR408 A6CR409 A6CR410 AGCR411 A6CR412
60. A3C318 to HP Part No 0180 1029 C FXD TANT 1pF 20 15VDCW Page 6 7 Table 6 2 Change A3R303 to HP Part No 0683 3945 R FXD COMP 390kQ 5 1 4W Change A3R304 to HP Part No 0683 3935 R FXD COMP 39kQ 5 1 4W Change A3R305 to HP Part No 0683 1035 R FXD COMP 10kQ 5 1 4W Change A3R310 to HP Part No 0683 1535 R FXD COMP 15kQ 5 1 4W Change A3R311 to HP Part No 0683 5125 R FXD COMP 5 1kQ 5 1 4W Change A3R313 to HP Part No 0683 6835 R FXD COMP 68kQ 5 1 4W Change A3R314 to HP Part No 0683 1235 R FXD COMP 12kQ 5 1 4W Page 6 8 Table 6 2 Change A3R323 to HP Part No 0683 3325 R FXD COMP 3 3kQ 5 1 4W Page 8 17 Figure 8 14 Change A3R303 to 390845 A3R304 to 39kQ A3R305 to 10kQ A3R310 to 15kQ A3R311 to 5 1555 A3R313 to 68k2 A3R314 to 1210 1 and A3R323 to 3 3kQ CHANGE 5 Page 6 4 Table 6 2 Change A2C207 to HP Part No 0140 0194 C FXD MICA 110pF 5 300VDCW service Note See CHANGE 9 Page 6 5 Table 6 2 Change A2R238 to HP Part No 0683 4715 R FXD COMP 4709 5 1 4W Page 6 6 Table 6 2 Delete A3C322 Page 8 19 Figure 8 18 Change A2C207 to 110pF and A2R238 to 4700 Page 8 17 Figure 8 14 Delete A3C322 CHANGE 6 Page 6 7 Table 6 2 Change A3R304 to HP Part No 0683 2035 R FXD COMP 20kQ 5 147 Delete A3CR322 and A3CR323 Page 6 8 Table 6 2 Delete A3R360 Page 8 17 Figure 8 14 Delete A3CR322 and A3CR323 Change A3R304 to 20kQ Delete A3R360 and replace with a short circuit 7 3 Sec
61. Description Note Reference Designation 9100 0735 TRANSFORMER POWER NOT ASSIGNED 04328 7029 TRANSFORMER INPUT 04328 7038 TRANSFORMER INPUT 8120 1378 CABLE ASS Y POWER 1251 0048 ADAPTER THREE PRONG TO TWO PRONG 04328 7203 CABLE 88 PROBE 04328 7202 CABLE ASS Y 1251 0135 CONNECTOR PRINTED CKT 5 CONTACTS 1400 0084 HOLDER FUSE 16143A PROBE CABLE PROBE ASSEMBLIES 16005A PROBE CLIP TYPE TWO FURNISHED 16006 A PROBE PIN TYPE TWO FURNISHED 16007A TEST LEAD ALLIGATOR CLIP RED 16007B TEST LEAD ALLIGATOR CLIP BLACK MISCELLANEOUS 0370 0254 KNOB SKIRTED BAR D3 4 BLK See list of abbreviations in introduction to this section 6 12 Model 4 SECTIO MANUAL CHAN 7 1 OPTIONS 1 2 Options are standard modifications performed on hp instruments at the factory Model 4328A Option 001 rechargeable battery operationis available 7 3 SPECIAL INSTRUMENTS 7 4 Specials are standard hp instruments that are modified according to customer specifications A separate insert sheet is included with the manual for special instruments having electrical changes Make the changes specified in addition to any other changes that are necessary 7 5 MANUAL CHANGES 7 6 This manual applies directly to the Model 4328A with serials 18285305711 and above The following paragraphs explain how to adapt this manual to apply to later instruments with higher serial prefix or earlier inst
62. Device Measurement 3 7 Component Locations 8 16 4 1 Basic Low Resistance Measurement 4 1 8 14 Oscillator Assembly A3 Schematic 8 17 4 2 Simplified Block Diagram 4 1 Range Switch Assembly A4 Schematic 8 17 4 3 Operation of Phase Detector 4 2 Mother Board Assembly A5 Schematic 8 17 4 4 Model 4328A Oscillator Talking 8 15 Phase Sensitive Amplifier Assembly 8506808078516 cunado 4 5 A2 Component Locations 8 18 4 5 Model 4328A Phase Sensitive 8 16 Mother Board Assembly A5 Amplifier Talking Schematic 4 1 Component Locations o 8 18 4 6 Model 4328A Power Supply Talking 8 17 Phase Sensitive Amplifier Assembly Schematic 4 9 ss EE 8 19 4 1 Model 4328A Ni Cd Power Supply Mother Board Assembly A5 Talking Schematic 4 11 561022030180 iesu EE 8 19 5 1 Transistor Biasing Characteristics 5 4 8 18 Power Supply Assembly Al 5 2 0 9mQ j 1 8mQ Impedance 5 7 Component Locations 8 20 5 8 900 j 1809 Impedance 5 7 8 19 Power Supply Assembly A1 7 1 Partial Schematic of A2 Ass y 7 1 561 11 16 ieu ea E E WE 8 21 7 2 Partial Schematic of A3 Ass y 1 2 Mother Board Assembly A5 8 1 Schematic Diagram Notes 8 2 5611600816 EEN 8 21 8 2 Overall Block Diagram 8 3 8 20 Ni Cd Power Supply Assembly A6 8
63. H t d 8 3 H 2 H S8 H HR H H H H II H H H vacuum tube neon bulb photocell etc voltage regulator cable socket erystal root mean square reverse working voltage slow blow screw selenium seetion s semiconductor silicon silver slide spring special stainless steel split ring steel tantalum time delay toggle thread titanium tolerance trimmer traveling wave tube micro 1076 variable dc working volts with watts working inverse voltage wirewound without 6 1 Section VI Model 43284 Table 6 2 Table 6 2 Reference Designation Index esignation 8 5060 0703 FRAME ASSEMBLY A 1490 0031 STAND TILT 3 5040 0700 HINGE 4 5060 0727 FOOT ASSEMBLY 5 5020 6852 METER TRIM 6 5000 8565 SIDE COVER We 5060 8549 COVER TOP 8 5000 8571 COVER BOTTOM 9 04328 1042 PANEL REAR 10 04328 10021 PANEL FRONT 6 2 Model 4328A Section VI Table 6 2 e Table 6 2 Reference Designation Index Stock No Reference Designation Description 04304 7043 POWER SUPPLY ASS Y AC POWER OPERATION ONLY 04304 8704 BOARD BLANK P C A1C1 A1C300 NOT ASSIGNED A1C301 0180 0967 C FXD ALUM 470uF 707 A1C302 0180 0756 C FXD ALUM 2207 16VDCW A1C303 0180 0967 C FXD ALUM 470 7 A1C304 0180 0756 C FXD ALUM 22 16VDCW AICRI AlCR300 NOT ASSIGNED AICR301 1901 0230 SEMICON DEVICE DIODE SILICON
64. HE OPERATION oaren te ER nice 3 1 3 1 1017000611011 esse 3 1 3 4 Controls Connectors and 785111693106728 lara 3 1 3 6 Battery Operation 3 1 3 10 Instrument Temperature MANTE aS r hen 3 1 Measurement ideas 3 1 3 15 Operating Procedure 3 1 3 17 Measuring Voltage on Samples 3 1 3 21 Applied Current on Samples and Maximum Power Dissipation 3 5 3 24 Effect of Series Reactance of 53030168 qaad arden 3 5 3 26 DC Bias Superimposed 3 5 3 30 Recorder Output en 3 5 3 32 Probe Connection 3 5 3 33 GEHELE errea aei hea rA 3 5 3 35 Probe Installation 3 6 3 37 16005A Clip Type Probe 3 6 3 39 16006A Pin Type Probe 3 6 3 41 16007A B Test Leads 3 6 3 43 Notes on Operation 3 6 3 44 In using the 1 and 3m Ohm IV 11 3 46 3 48 THEORY OF OPERATION 4 1 4 4 4 4 10 Model 4328 TABLE OF CONTENTS Ranges Connection of Current Terminals to the Sample must be a Firm Positive Contact 3 6 In using the 1 and 3m Ohm Range Large Electrically Conductive Materials should not be placed close to the Probe or their Cables 3 Changing Test Lead Length 3 4 1 1517000170007 u aa c o ad aa 4 1 Simplified Functional Description 4 1 Oscillator E aa 4 2 Schmitt Trigger Circuit 4 2 secti
65. I YAHI GT 1 NHOAHAVM HO SOTHO SIHAFTT Og 87 7 32 60 8 2 PIANI ALTOVA_ Mi OH 9000 e ae 8 8 90 8 ANY SOTHO SOHO LNSNOdWOO ALINVA 530 1307 ANY MOXNHO 9 8 11800711 9 8 IHA 9 SLNTH NOd WOO ALTOVA cmo U VH om 30 13 8078 7 8114104110 L 10 0 ALTAVA SOTHO SIHAHT ORE TI d L ZV SO NHOAHAVAM SONHO d Y xe ER er ZI d L ZV INI SNUOAHMAVA 0 2 cogo NY MOSHO HOILONTIOO goed LV HOVLTOA AYASVAN HOM NI MOVE 18 088710 Lod INE 10803 LV yo 308 50952 HOM 9083 10 11656 51 01 3087 XIJ any ana 54045 8 4 1100118 HOE MHOSHO GVOT 0 LUOHS ON AS 0 gt 5088 ALINVA HOVIdHH ANY 3708730 INVS SI 0 AI SLNINOdWOOD OV 21 0 0 OHH POLHO TOSHI TOLO UANYOASNVUL ISA 423 590583 88081 0 x HOV 1 0 01 AS 0 gt TENSVAN LHM 0 11 GHYOS HAHLON 56 AST 810877 ZOEN ava 90911 NOLLVTNDHU MOAHD APT OL AZI 105 3 SSOHOV Act gt 66 AZ ONILOOHSI18NOY1 AlddflS 6 8 3 84 855 Model 43284 Section VHI Figure 8 11 tM u E GE ENS RE S SA AI e x KS AAA p AXIAL RSS PTAS n REUS E AAT Ur X 4 0 e
66. M SEENEN CS qaq P Tr A w tte nn maass uu manen f GE seg wx Ord Z 2 Ge Ol G3833384 34V NAQHS SHVN 10A ere d 320 N 0 A AS VHO N iHM INAUG ANANI BNI 3 HO9 y ra GEL 2 5 FAA NED EE i PA pe u vi AOE ASI 0313130 5084 0243 9080 1020 Ol H2 102 49 DOES OCO Xi AH Cd ON H ASSY GV j ASSY SNOLLVNSIS3Q0 2083833 8 69 7 ee ee a censuses ven A ARRE EEE IN 6 66 4 9 9 9 9 5 6 ests 9 E 969 PPP quete H n i i gt 880 13530 juouoduro gy q quessy Ajddng tamod pO IN OZ g 8 VILI 2 SERIES EEE EE Is N SEEN EE AA O M aie TEN AS ENS RES AE EE SE REI Es Dk y 9 d DAE ARR e OE OH EH e OI SE GE EE NERS SE I EE e E SAS SS EE SSSR BESTEN ZE NSR LENT EK ti Ae RT AD ATI NDA NN 1 OMM
67. Model 43284 Table 6 2 Reference Designation Index Cont d 04328 7033 04328 8 708 0160 1550 04328 7031 1251 1886 1251 1886 04328 7026 04328 8706 1420 0274 1420 0274 1420 0274 1420 0274 0180 0965 0180 0965 1901 0230 1901 0230 1901 0230 1901 0230 1902 3208 1901 0040 1901 0230 1901 0230 1901 0230 1901 0230 1902 3208 1901 0040 Stock No Description ES MOTHER BOARD BOARD BLANK P C NOT ASSIGNED C FXD MY 0 015 uF 10 100VDCW NOT ASSIGNED TRANSFORMER NOT ASSIGNED CONNECTOR PRINTED CIRCUIT 15 CONTACTS CONNECTOR PRINTED CIRCUIT 15 CONTACTS POWER SUPPLY RECHARGEABLE BATTERY OPERATION ONLY BOARD BLANK P C NOT ASSIGNED BATTERY 6 225A HR HG SLDR TAB BATTERY 6V 225A HR HG SLDR TAB BATTERY 6 225 111 HG SLDR TAB BATTERY 6 225A HR HG SLDR TAB NOT ASSIGNED C FXD ALUM 22007 7 C FXD ALUM 2204F 7 NOT ASSIGNED SEMICON DEVICE DIODE SILICON 181625 600V 4 SEMICON DEVICE DIODE SILICON 181625 600V 350mA SEMICON DEVICE DIODE SILICON 181625 600V 350mA SEMICON DEVICE DIODE SILICON 181625 600V 350mA SEMICON DEVICE DIODE BREAKDOWN 15 4V 5 400mW SEMICON DEVICE DIODE SILICON SEMICON DEVICE DIODE SILICON 181625 600V 350mA SEMICON DEVICE DIODE SILICON 181625 600V 350mA SEMICON DEVICE DIODE SILICON 181625 600V 350mA SEMICON DEVICE DIODE SILICON 181625 600V 350mA SEMICON DEVICE DIODE BREAKDOWN 15 4V 5 400mW SEMICON DEVICE DIODE SILICON See l
68. OMP 13006 5 7 COMP 6202 5 1 4W FXD COMP 3910 5 7 FXD COMP 3980 5 1 4W COMP 9 1kQ 5 1 4W FXD COMP 120kQ 5 1 4W FXD COMP 150kQ 5 1 4w FXD COMP 10000 5 1 4 FXD COMP 47kQ 5 1 4W FXD COMP 47kQ 5 1 4W FXD COMP 36002 5 FXD COMP 10k 5 FXD COMP 13000 5 1 4W FXD COMP 5 1kQ 5 77 FXD COMP 10009 5 1 4W FXD COMP 3 6010 5 1 4W gt FXD COMP 56002 5 7 FXD COMP 15k0 5 77 FXD COMP 4350 5 1 4W FXD MET FLM 68kQ 2 1 8 W FXD MET FIM 33kQ 2 1 8W FXD COMP 20k 5 1 4W FXD COMP 20kQ 595 1 4W FXD COMP 22kQ 595 1 4W FXD MET FLM 68kQ 2 1 8W FXD MET FLM 33kQ 2 1 8W FXD COMP 389050 595 1 4W FXD COMP 1050 5 1 4W FXD COMP 10kQ 595 1 4W FXD COMP 3901 5 1 4W FXD COMP 2 2kQ 595 1 4W VAR 2010 10 1 2W Model 4328A Reference ASTI A3T300 3 301 A3T302 A4 A4R1 A4R100 A4R101 A4R102 83 A4R104 A4R105 A4R106 A4R107 A4R108 A4R109 A4R110 A4R111 1 A4R113 A4R114 A4R115 A4R116 A4R117 A4R118 A4R119 A4R120 A4R121 A4R122 A4R123 A451 A45100 A4S101 Table 6 2 Reference Designation Index Cont d 04328 7030 04328 7032 04328 7024 04328 8606 04328 8626 04328 8627 04328 8628 04328 8629 04328 8630 04328 8631 0698 2125 0698 1466 0698 2126 0698 2042 04328 8621 04328 8622 04328 8623 04328 8624 04328 8625 0698 3444 0757 0426 0757 0290 06
69. TOR PNP SILICON A3Q303 1854 0854 TRANSISTOR SILICON A3Q304 1854 0854 TRANSISTOR SILICON A3Q305 1854 0854 TRANSISTOR SILICON A3Q306 1853 0010 TRANSISTOR PNP SILICON A3Q307 1854 0854 TRANSISTOR SILICON A3Q308 1854 0854 TRANSISTOR SILICON A3Q309 1854 0854 TRANSISTOR SILICON A3Q310 1854 0854 TRANSISTOR SILICON A3Q311 1854 0854 TRANSISTOR SILICON A3Q312 1853 0071 TRANSISTOR SILICON A8Q313 1853 0071 TRANSISTOR SILICON A8Q314 1854 0854 TRANSISTOR SILICON 3 3315 1854 0854 TRANSISTOR SILICON ASQ316 1854 0854 TRANSISTOR SILICON 07 1854 0854 TRANSISTOR SILICON A3Q318 1854 0854 TRANSISTOR SILICON A3Q319 1854 0854 TRANSISTOR SILICON A3R1 A3R300 NOT ASSIGNED A3R301 0683 2735 FXD COMP 27 8 5 1 4W A3R302 0683 3045 FXD COMP 300kQ 5 1 4W A3R303 0683 1045 EXD COMP 100x9 5 1 4W A3R304 0683 1035 FXD COMP 10kQ 5 1 4W A3R305 0683 6225 FKD COMP 6 2kQ 5 1 4W A3R306 2100 3212 VAR 2009 10 1 2W A3R307 0698 3441 FXD MET FLM 2152 1 7 A3R308 04328 8613 FXD W W 750m 2 A3R309 0683 5625 FXD COMP 56000 5 1 4W A3R310 0683 6225 FXD COMP 6 250 5 1 4W A3R311 0683 6225 FXD COMP 6 2863 5 1 4W A3R312 0683 2735 FXD COMP 27kQ 5 7 A3R313 0683 1235 FXD COMP 12kQ 7 AE E E mmm EXD COMP 5 1kQ 5 0683 5125 74 See list of abbreviations in introduction
70. VDCW FXD TANT 17 20 15 7 FXD CER 0 1uF 20 80 50VDCW FXD CER 0 1uF 20 80 50VDCW FXD CER 1pF 20 7 FXD TANT 1uF 20 15 VDCW FXD MY 1500pF 10 100VDCW FXD MY 1500pF 10 100 VDCW FXD MY 4700pF 5 100VDCW Model 4328 A Table 6 2 Reference Designation Index Cont d Description DIODE BREAKDOWN 6 98V 2 400mW DIODE SILICON DIODE SILICON DIODE SILICON DIODE SILICON DIODE SILICON DIODE SILICON DIODE SILICON DIODE GERMANIUM DIODE GERMANIUM DIODE SILICON DIODE SILICON DIODE BREAKDOWN 9 09V 2 7 DIODE GERMANIUM See list of abbreviations in introduction to this section Model 4328A Section VI Table 6 2 Table 6 2 Reference Designation Index Cont a Stock No Description AME nation Desig A3CR315 1910 0016 SEMICON DEVICE DIODE GERMANIUM A3CR316 1910 0016 SEMICON DEVICE DIODE GERMANIUM 7 1910 0016 SEMICON DEVICE DIODE GERMANIUM A3CR318 1910 0016 SEMICON DEVICE DIODE GERMANIUM A3CR319 1910 0016 SEMICON DEVICE DIODE GERMANIUM SEMICON DEVICE DIODE BREAKDOWN 7 5 2 400mW SEMICON DEVICE DIODE BREAKDOWN 9 09 2 400mW SEMICON DEVICE DIODE BREAKDOWN 6 19V 2 1W SEMICON DEVICE DIODE BREAKDOWN 6 19V 2 77 1902 3129 1902 3150 1902 0559 1902 0559 A3CR320 AS3CR321 ASCR322 A3CR323 A3Q1 A3Q300 NOT ASSIGNED A3Q301 1854 0854 TRANSISTOR SILICON A3Q302 1853 0010 TRANSIS
71. VICE VOLTAGE 2 CURRENT TERMINAL I TERMINAL Rx MEASURED RESISTANCE Section HI Paragraphs 3 47 to 3 50 Table 3 2 Maximum Values of Resistance and Length of Lead Wire Lead Wire Lead Wire Resistance Length cm ohms 0 002 0 02 0 06 0 2 0 6 2 6 20 20 20 20 20 Minimum to maximum value shown 4 TERMINAL DEVICE Zeie w wA W wj VOLTAGE TERMINAL CURRENT TERMINAL x Re RESISTANCE OF LEAD OR TERMINAL Figure 3 9 4 Terminal Device Measurement 3 7 Model 4328A OF OPERATION ORY 4 1 INTRODUCTION 4 2 The measuring principle of Model 43284 is as shown in Figure 4 1 the so called 4 terminal method where constant current i is applied to a sample Rx and the voltage drop VR is measured If 1 is known and resistance value Rx maybe calibrated linearly on a voltmeter scale By changing i range changing is possible Figure 4 1 Basic Low Resistance Measurement 4 3 This method requires a total of 4 terminals to be connectedto the ends of sample Rx i one volt age and one current terminal on each end The set of 20 6 PEAK LIMITTER e HIGH INPUT POWER IMPEDANCE gt E e Co AMP ANF 5 Curt Section 1V Paragraphs 4 1 to 4 6 current terminals applies constant current ito sample Rx the voltage terminals detect the voltage drop a
72. WWO2 1X O d TR OL 03434338 BHV NMOHS 0 z Q3OHVHO ONIJG AAL Lg Asi NOLIVMZdO ANT Ni NMOHS SIDYLIOA O VHS C O O O S3LON o iso M 1 O 5 LANE SNE T 69 89 88 148 REN SN 134 58 Me Tg 9 787 LHM 01 pa 0 e 12 Tae k nn 1 V 1 3 it ES AOSZ 0313230 KE 14 1 es 10 ir o ae s EET 1 989 1093 628 318 5 12 X14383 ASSY av ASSY N SNOLLYNSISHG SONIA 7 86 PON np a LELIE 230 90 e LOF OE Dijo Luz WSgH XA EE LAPT OSES Jeu aene Bang WED Bonon RIL Ge 5 ung EHRE HOG p ee VISAV TI TAIN psp gz IAAL i80 5135568 061 3 IRON IAK Ur 9 tx bag 5 94384 1 9 4 87 d 28555 1 eee FL DAMON TEA St 122 E FIN OP 0 POS MGS 8 53 505 e ESTA BE ERROR Br e KE 827 du 932 21 Gr 62 2 ings BEG Flag 32 4 Butze noe TPS NS OO sae 7 4 AN 23 40 FACE 1 099595 291 6 6085 28 04 5851495 3 5 gave y MEET e LA 29222 RY 7 13s DC 022 Da Sang 8352 y bns d 92956 api Sasser iva 52152 GE Site Mayra
73. Zt Aereo ORS SS RN 2 oe RER x SE A EE Eu TEDE SE S RE NEE AE ert 37 SEES 7 D ou EE PEN 262252 EE SE SE SE e i DES SE 2 3 pim CREA TO RY 1 ES EE SE SE eer SA 7 SE KEE ES ay S SE lt SE E EU 2 o GE ER v 3 Bd WU d D athe 0 EEE d SPs ps E ENS 3 OE EERE E LEN EER ER Sa OSS SE is CURAE 55221 ZE Z3 WAYS Ti VENUE Yi DRM 2 N RL we 5 eo SE DS B PA 2 lt LEL ONS SE GE 7 X seen DEAE od BEN E SAS RE om e d eld REUS SE RES IL S ot H o 3 Waves CH hi 7 SEJE K 2 ty 2 lt NUES 35 3 7 SE ME IY 7 Se E IA AS SC S Ge De SE d i 154 z A 5 SS EE 2 X ER EEE Y 5 SE z UE E Be SORT UI Sex 5 BR 4 O fix 2 9 p E ae BR 207 RE AO RR 7 SE RE WR d SE SCH ER SE E EE EE m GE SE SR Z 2 EE E SE E u iG 2 mM SS SEIEN cena BEE Sa UM e O ENEE OS Ee EE eem 100uV cm 1ms cm UDS 3 e e SSE NS e 3 SE GS zs IS SC SE S es ome ES eu ZE E SE 1 o pm d EE ILE ER HU REA AE y WEE E TUR AU SERIES SE Ee 2 ER o ou xm DIARI H EE SE SE i EE EE EE Dee EE Se EE SS SO a 70 Uu 7 E m
74. a Resin flux Remove excess flux Must not dissolve etched Freon solvent from soldered area circuit base board ma Acetone terial or conductor bonding agent before application of protective coating Lacquer Thinner Isopropy Alcohol 100 dry Solder Component replacement Circuit board repair Wiring Resin flux core high tin content 60 40 tin lead 18 gauge SWG preferred Contamination corrosion protection after soldering Protective Coating Good electrical insula tion corrosion prevention properties Krylon 2 Humiseal Protective Coating Type 1B12 by Columbia Technical Corp Woodside 77 New York Krylon Inc Norristown Pennsylvania y 0 29 90 29mH 9090 1 CORE 9170 0271 1 RESISTOR 0757 0399 2 COIL 1 5mm copper wire one turn 2 INDUCTOR 9100 0761 Figure 5 2 0 9m 1 8mQ Impedance Figure 5 3 900 j 18042 Impedance 5 7 NOTES Model 4328A 6 1 INTRODUCTION 1 REPLACEABLE PARTS 6 2 This section contains information for ordering replacement parts Table 6 2 lists parts in alpha numerical order of their reference designators and indicates the description see Table 6 1 for abbrevi ations used and hp stock number of each parts together with any applicable notes 6 3 Miscellaneous parts associated with each as sembly are listed at the end of each assembly listing Others
75. able 6 2 Delete A2C218 0160 0127 C FXD CER 1uF 20 25VDCW Page 4 7 Figure 4 5 Deiete A2C218 Page 8 19 Figure 8 17 Delete A2C218 Page 6 7 Table 6 2 Change A3CR322 to HP Part No 1902 3110 DIODE BREAKDOWN 5 9 400mW Change A3CR323 to HP Part No 1902 3110 DIODE BREAKDOWN 5 9V 400mW Change A3Q312 to HP Part No 1853 0010 TRANSISTOR SILICON Change A3Q313 to HP Part No 1853 0010 TRANSISTOR SILICON Page 8 17 Figure 8 14 Change voltages of CR322 and CR323 to 5 9V Page 6 2 Table 6 2 Change HP Part No of PANEL FRONT to 04328 1221 Page 6 11 Table 6 2 Change DS1 to 2140 0015 LAMP NEON NE 2H 5040 0234 LAMP HOLDER FOR DSI 5040 0235 LAMP HOLDER FOR DSI Change R3 to HP Part No 0683 3335 R FXD COMP 3380 5 1 4W Model 43284 Section VI CHANGE 15 Page 6 4 Table 6 2 Page 8 19 Figure 8 17 Change 20207 to HP Part No 0140 0193 C FXD MICA 82pF 5 300VDCW CHANGE 16 Page 6 4 Table 6 2 Page 8 19 Figure 8 17 Change A2C207 to HP Part No 0160 2204 C FXD MICA 100pF 5 300 VDCW CHANGE 17 Page 6 4 Table 6 2 Page 8 19 Figure 8 1 Change A2C207 to HP Part No 0140 0191 C FXD MICA 56pF 5 300VDCW CHANGE 18 Page 6 5 Table 6 2 Change A2R228 to HP Part No 2100 3253 R VAR 5050 10 7 Change A2R229 to HP Part No 2100 3253 R VAR 5019 10 1 2w Change A2R232 to HP Part No 2100 0558 R VAR 20kQ 10 1 2W Change A2R233 to HP Part No 2100 0567 R VAR 280 10 1 2W CHANGE 19 Page
76. ak For optimum use of the instrument range should be set on a higher range when making the ini tial connection followed by switehing the selector to the appropriate lower range 3 15 OPERATING PROCEDURE 3 16 Figure 3 3 illustrates operating procedure 3 17 MEASURING VOLTAGE ON SAMPLES 3 18 When the voltage applied between the contact is high the oxidized film formed between the contact is destroyed thereby and the resistance value meas ured may be smaller than under actual use More over once this happens it will never recover the former condition even if the voltage or the current is cut off 3 19 According to the recommended standard of TEC Internationa Electrotechnical Commission meas urement of contact resistance by ac should be conducted 3 1 Section HI Model 4328A Figure 3 1 4328A MEHLLIOHMMETER O BATT TEST E 3 INE ON GFF FAST CHARGE 1 LINE ON OFF FAST CHARGE Instrument 9 PROBE Cord for measurement divides into power ON OFF FAST CHARGE toggle switch 2 probes at modular connector connects either ac line or internal battery option 001 only to internal voltage regulator A CAUTION circuit and provides fast charge to the battery Superimposed DC voltage limits are as follows 2 LINE lamp This pilot lamp glows when the 1 Between High and Low terminals instrument is turned ON In option 001 the 150 86 maximum pilot lamp glows when power cord is connected i 7
77. alues of 1101 to R111 Leads to the Model 43284 should slightly be changed for adjusting the full scale Connect the probes to Standard Decade Resis tance Box YEW Type 2786 or GR Model 1432T 9 37 RECORDER OUTPUT ADJUSTMENT d Adjust the Decade Resistor to provide 300 and a Set the Model 4328A Range Switch to 1002 and adjust R232 so that the pointer indicates 8055 connect the probes to 100 Standard Resistor Check the full scale reading of the Model 4328A e Adjust the Decade Resistor to provide 1009 and adjust R229 so that the Meter indication is b Adjust A2R233 for the recorder outputto be 10022 100mV de between terminals marked RECOR DER on the rear panel f Set Decade Resistor to provide 10 to 1002 in order and check the tracking tolerance of Model e Repeat Paragraphs 5 35 36 and 37 4328 It should be 0 5 9 38 REACTANCE COMPONENT OFFSET g H the trackingis out of tolerance repeat d e ADJUSTMENT and a Set the Model 4328A range to 1m 2 and measure 5 36 FULL SCALE ADJUSTMENT an impedance of R joL as shown in Figure 5 2 where R should be calibrated by DC bridge a Attach the Model 16007A B Test Leads to the and the reactance value twice that of R aani b Adjust A2C208 as the error should come within 1 relative to the calibrated value 7 b Connect the Test Leadsto Standard Resistor of is changed to different values when A2C208 is 0 001 to 1008 and check the full scale readings of t
78. and 3 2 The descriptions are keyed to the corresponding items whichare indicated on the figure 3 6 BATTERY OPERATION 3 7 The Model 4328A Option 001 operates from bat tery and conventional 115 or 230 volt line power rechargeable Nickel Cadmium battery is factory installed in Option 001 instruments The same battery can be ordered and later installedin the basic instru ment thereby modifying the milliohmmeter to the Option 001 configuration The battery installation kit including battery charging circuit may be ordered from the nearest HP Sales Office 3 8 It is recommended that the Model 4328 be battery operated for up to 8 hours and then allowed to recharge 8 hours or overnight Continuous bat tery operation is possible for up to 15 hours but the battery must then be recharged for about 19 hours 3 9 The 4328A automatically operates on internal batteries whenever the ac line power is disconnected and the power switchis ON Batteries are continuall y Charging when the power cord is connected toa 115 or 230 volt source when the pilot lamp glows and indi cates LINE CHARGE CAUTION The four Nickel Cadmium batteries in the Option 001 are in hermetically sealed con tainers Under high temperatures above 50 C hydrogen in the hermetically sealed battery container can build up to high pressure causing damage to the bat Section HI Paragraphs 3 1 to 3 19 teries and or the instrument The user
79. anufacturer miniature PORC momentary POS mounting por mylar pp nano 10 9 Um normally closed neon nickel piate RECT normally open RE negative positive zero RH zero temperature coefficient RMO To obtain replacement parts address order or inquiry to your local Hewlett Packard Field Office see lists at rear of this manual for addresses Identify parts by their Hewlett Packard stock numbers To obtain a part that is not listed include Instrument model number Instrument serial number Description of the part Function and location of the part plug transistor resistor thermistor switch transformer terminal board test point H H 3 Ig negative positive negative not recommended for field replacement separately replaceable order by description oval head oxide 8 H Ee peak printed circuit picofarads 10 farads phosphor bronze Phillips peak inverse voltage positive negative positive part of polystyrene porcelain position s potentiometer peak to peak point peak working voltage 8 H Il 8 og np 8 H rectifier radio frequency round head or right hand rack mount only List of Reference Designators and Abbreviations AES lt RMS RWV S B SCR SE SECT SEMICON SI SIL SL SPG SPL SST SR STL TA TD TGL THD TI TOL TRIM TWT VAR VDCW W W O nt U s n
80. ard It calls attention to an operating procedure practice condition or the like which if not correctly performed or adhered to could result in damage to or destruction of part or all of the product A Note denotes important information It calls attention to a procedure practice condition or the like which is essential to highlight MANUAL IDENTIFICATION Model Number Date Printed JAN 1982 Part Number 04328 90008 MILLIOHMMETER This supplement contains important information for correcting manual errors and for adapting the manual to instruments containing improvements made after the printing of the manual To use this supplement Make 88 ERRATA corrections Make 88 appropriate serial number related changes indicated in the tables below SERIAL PREFIX OR NUMBER MAKE MANUAL CHANGES SERIAL PREFIX OR NUMBER MAKE MANUAL CHANGES 1828307291 and above 11828407961 and above a mmm NEW ITEM ERRATA Page 2 1 Paragraph 2 7 ENVIRONMENT Change temperature limitation as follows b Temperature 40 F 40 0 to 1679 75 C c Temperature with OPT 001 32 F 0 C to 113 45 C Page 3 1 Paragraph 3 8 Change the description for possible continuous battery Operation to 8 hours Page 5 7 Figure 5 3 902 131800 Impedance Change the Part Number for INDUCTOR to 9100 1686 NOTE Manual change supplements are revised as often as necessary to keep manual
81. ck at rear of instrument b Connect plug 2 blade with roundgrounding pin to 3 wire grounded power outlet Exposed portions of instrument are grounded through the round pin on the plug for safety when only 2 blade outlet is available use connector adapter HP Part No 1251 0048 then connect short wire from side of adapter to ground to preserve the protection feature 2 1 020 Model 4328A SECTION PERATION 3 1 INTRODUCTION 3 2 The Model 4328A is effective in measuring con tact resistance such as in relays switches connec tors and incremental resistance of diodes or lead resistance of integrated circuits Measurement is made by the 4 terminal method actually utilizing on 2 probes One current lead and one voltage lead are incorporated in each probe The probes are branched off through a connector in the probe cord that leads from the front panel and the user can rearrange the different kinds of probes or test leads at will accord ing to the form of the sample This section includes a complete description of the Milliohmmeter operating controls its accessories characteristics and tech niques of uses 3 9 The range of 4328A extends from 1 millichm to 100 ohms full scale in a 1 3 10 sequence Maximum sensitivity is 204 ohms 3 4 CONTROLS CONNECTORS AND INDICATIONS 3 5 The front and rear panel controls connectors and indicators are explained in Figure 3 1
82. cross Rx Using this method the resistance of the lead wires and the contact resistance between ter minals and sample will not constitute any error The effect of the resistance of voltage terminalis rv 18 re moved by making the internal resistance of the volt meter MV sufficiently greater than ry Resistance ri of the current terminals can also be ignored as it is normally sufficientiy less than the internal resist ance R of constant current source In Model 43284 the internal impedance as seen from voltage terminals is set at 5k or higher and the internal resistance of constant current source is set at RANGE x500 4 4 SIMPLIFIED FUNCTIONAL DESCRIPTION 4 5 Functionally viewed Model 4328A may be di vided into two major sections One isthe ikHz oscil lator section serving as constant current source and the other is a voltmeter section of the phase dis criminator type amplifying the voltage drop across the sample synchronously rectifying it and deflecting the ohm calibrated meter 4 6 Thefollowing isa detailed description of opera tionof the 4328A refering to Figure 4 2 Model 4328A Block Diagram Zx Rx j Xx R Ux MODULATOR te A PHASE DETECTOR 1 i Voltage Tip CLIPPER n FLIP FLOP Tip 5 7 SCHMITT m DETECTOR gt TRIGGER Figure 4 2 Simplified Block Diagram 4 1 Section IV Paragraphs 4 7 to 4 17 4 7 OSCILLATOR CIRCUIT 4 8 Assuming that a samp
83. e positions the LINE lamp glows and the batteries are charged when the instrument is connected to ac power line The instrument performs nor mally as a milliohmmeter while charging its batteries 4 Connect the probes to the sample to be measured 5 Rotate the range selector until the meter indi cator moves on scale 6 Read the meter indication Figure 3 3 Operating Procedure Model 4328A by means of measuring instruments with voltage peak values of 20mV or less 3 20 The instrument can not start oscillating if no sample is connected between the probes When sam ple is connected between the probes a positive feed back loop is formed and the oscillator begins oscil lation Since constant current flows in the sample in correct range setting voltages across the sample are proportional to sample resistance and are less than 2mV peak on any range at full scale deflection When the resistance value of the sample is greater than that of the set range an over voltage protec tion circuit in the Model 4328 A is called upon to pre vent any voltage higher than 20mV peak from being applied to the sample Thus when an unknown sam ple is measured without special preparation contact resistanceis still accurately measurable without dis turbance to the contact points 3 21 APPLIED CURRENT ON SAMPLES AND MAXIMUM POWER DISSIP ATION 3 22 With Model 4328A the current and power ap plied to samples are extremely sma
84. e adjustment and cal ibration procedure for the Model 4328A These opera tions should be conducted only if it has previously been established by PERFORMANCE TESTS that the Model 4328A is out of adjustment If the procedure outlined do not rectify any discrepancy that may exist and all connections and settings have been rechecked refer to TROUBLESHOOTING in Section VIE for possible cause and recommended corrective action 5 27 MECHANICAL METER ADJUSTMENT a Whenthe meter is properly zero set the pointer rests over the zero mark on the meter scale when the instrument is 1 at normal operating temperature 2 in its normal operating position 3 turned off b Setthe pointer as follows to obtain best accuracy and mechanical stability 1 Turn instrument off 2 Rotate the meter mechanical adjustment screw clockwise until the meter pointer is to the left of zero and moving up the scale toward zero Stop when the pointer is ex actly over the zero mark If the pointer Section V Paragraphs 5 23 to 5 35 overshoots repeat step 2 3 When the pointer is exactlyon zero rotate the adjustment screw approximately 3 de grees couhter clockwise This frees the adjustment screw from the meter suspen sion If the pointer moves during this step repeat steps 2 and 3 5 28 DC POWER SUPPLY CHECK 5 29 Refer to Table 5 4 for Power Supply Check points and typical voltage values Measure de voltage between common and desi
85. er collector might read open very high collector emitter might NPN read open Small Signal Silicon as ae emitter 200 1000 Power high often collector emitter greater than 1M To test for transistor action add collector base short Measured resistance should decrease imA Red Black 0 82mA Black Red 3 25m Serial Number CAUTION Mostohmmeters can supply enough current or voltageto damage a transistor Before using an ohmmeter to measure transistor forward or reverse resistance check its open circuit voltage and short circuit cur rent output ON THE RANGE TO BE USED Open circuit voltage must not exceed 1 5 volts and short circuit current must be less than 3ma See Table 5 6 for safe resistance ranges for some common ohm meters 3 0 Model 4328A section v Table 5 7 Table 5 7 Etched Circuit Soldering Equipment Specification Item Recommended Soldering Tool Soldering Unsoldering Wattage rating 37 5 Tip Temp 750 800 F Tip Size 1 8 OD Ungar 776 Handle with Ungar 1237 Heating Unit Soldering Tip general purpose Soldering Unsoldering Shape chisel Size 1 8 Ungar PL113 De soldering aid Suction device to remove molten solder from Unsoldering muiti connection components Soldapult by the Edsyn Company Arleta e g tube sockets connection Californi
86. es up to 8 hours continuous operation Automatic battery recharge 1 2 Model 4328A ment for measurement of low resistances Informa tion inthis manual applies directly to instruments as manufactured with serial numbers prefixed by the three digits indicated on the title page If the serial prefix of the instrument is above thatonthe title page a Manual Change sheet supplied 1 describe changes which will adapt this manual to provide correct coverage Technical correction if any due to known errors in print are called Errata and are shown on the change sheet And if the serial prefix or number of the instrument is below that on the title page see SECTION VH MANUAL CHANGES AND OPTIONS For information on manual coverage of any HP instrument contact the nearest HP Sales Service Office addresses are listed at the rear of this manual Specifications Weight 7 lbs 3 2kg Accessories Furnished 160054 Clip type Probes 100064 Pin type Probes 16007A Test Lead 16007B Test Lead Detachable Power Cord 16143A Probe Cable Accessories Available 5060 0797 Rack Adapter Frame holds three instruments the size of the 43284 16459A Carrying Case 110564 Handle Kit Combining Cases 1051A 11 1 4 in 286mm deep 1052 16 3 8 in 416mm deep The combining cases accept the 1 3 module HP instruments for benchuse or rack mounting See 1051 data sheet for detail Options 001 Rechargeable battery installed pr
87. g 00 Agents ENING 175 YSIS Gig 997 BSH o 55 174 3 5 Nv VS byoy IMA n2 PG ORES 13 92 55 856 TF mi nf DER IA TIA 66500 23562 ot 507 URNA DANS 0 14 2 2 aR 253 656 31 SD Der gg 4 Ke wen 190119 Sas vid 59 2 003 nog FEIST Zei issu 10 vie 55559 oen 3069210172 oa Me 7 IF 3400A 1 0 2570 83 ooa nbte2upoy 982 306 CA tp 9 5 2 Yp KOEN ARIA JAPAN 01877 TY 2 04 03 ZAXO 5952 reg ERE E Din 4181 04157 KC GE 2 1722 Bee riv 146 2221 basan CF 2 257 2 5 190 8023 UR A u ux up MIENTE NYONTINOG 3 zech 3 21 nej AS od EI 5 039 0 5 21 APPIN 7 PLL 4309498 3 MAKE EE Sry am ose apte HEYN 447 wei rcd Os Pil yarka 8687 F re Mes DDR rm YS OPA o wg 0530 Sr ste SK OF Cacus f USNC 59 2 EP PESTLE 5111 392 m 9p voy Ge SUH GE O 7 ws velen sn DS WINS 2 2 WE 19740999 2 8 Ch opos 2 317 Low Cla
88. gnated location on Mother Board Measure de 13V ac ripple with Oscilloscope HP Model 140A The peak value of ripple should not exceed 7 Table 5 4 Power Supply Test Location on I Lime Mother Board Variation WHT RED 12V 14V 103 7 WHT 12V 14V u 5 30 BIAS ADJUSTMENT 5 31 With the probe leads shorted adjust R360 so that Q302 collector voltage reads 3 7 to COMMON This sets the bias on Q303 base Oscillator output transistor Voltage 13V 0 32 1302 ADJUSTMENT a Set the Model 4328A to im Range with the probes shorted or 135 across them b Adjust T302 by turning top core cw or ccw for maximum peak reading Output is taken at T301 terminals marked BLU and BLK 5 33 OSCILLATOR OUTPUT ADJUSTMENT a Set the Model 4328A to 1009 Range with the probes shorted b Adjust R306 and R360 alternately for a volt age of 200mVp p at T301 terminals marked BLU and BLK use HP Model 140A 5 84 ELECTRICAL ZERO ADJUSTMENT a Set Model 43284 Range Switch to b Short the current probes and voltage probes to each other for zero input c Rotate R228 clockwise slowly and ascertain that the Meter pointer moves up scale and then ro tate counterclockwise until pointer reaches just zero 5 35 LINEARITY ADJUSTMENT a Set Model 4328A Range Switch to 100 0 3 Section V Model 4328 Paragraphs 5 36 to 5 38 5 Put the Model 16005A Probes or 16007A B Test d H the readings are off v
89. hall pay shipping charges to return the product to Buyer However Buyer shall pay all shipping charges duties and taxes for products returned to HP from another country HP warrants that its software and firmware designated by HP for use with an in strument will execute its programming instructions when properly installed on that instrument HP does not warrant that the operation of the instrument or soft ware or firmware will be uninterrupted or error free LIMITATION OF WARRANTY The foregoing warranty shall not apply to defects resulting from improper or inade quate maintenance by Buyer Buyer supplied software or interfacing unauthorized modification or misuse operation outside of the environment specifications for the produet or improper site preparation or maintenanee NO OTHER WARRANTY IS EXPRESSED OR IMPLIED HP SPECIFICALLY DIS CLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILTY AND FITNESS FOR A PARTICULAR PURPOSE EXCLUSIVE REMEDIES THE REMEDIES PROVIDED HEREIN ARE BUYER S SOLE AND EXCLUSIVE REMEDIES HP SHALL NOT BE LIABLE FOR ANY DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES WHETHER BASED ON CON TRACT TORT OR ANY OTHER LEGAL THEORY ASSISTANCE Product maintenance agreements and other customer assistance agreements are available for Hewlett Packard products For any assistance contact your nearest Hewlett Packard Sales and Service Office Addresses are provided at the baek of this man
90. he Model 4328 A 0006 c Set the 43284 range to 3m8 and check with c The Meter Readings should be within 0 5 of Standard Resistor If necessary adjust A4R102 full scale error should be within 1 VACUUM TUBE CATHODE 20V COLLECTOR AiN N PN TRANSISTOR es 1 CURRENT NR CURRENT EMITTER 20V Qe CURRENT N 4 GURRENT COLLECTOR PNP TRANSISTOR EMITTER Figure 5 1 Transistor Biasing Characteristics 5 4 Model 4328A d Al ranges should be checked with Standard Resistors and adjusted if necessary A4R101 102 109 110 111 and 117 through 7 are all factory selected e Setthe range to 10051 and measure an impedance of R joL as shown in Figure 5 3 where R should be calibrated by DC bridge and the re actance value twice that of R f Adjust C202 as the error should come within 1 relative to the calibrated value Note C202 takes value from 0 015 0 025 LE g Check again at imQ range whether the error is in the above specification 9 39 ISOLATING TROUBLE IN TRANSISTOR CIRCUITS 5 40 General The following information should help determineis atransistor works There are tests for both in circuit and out of circuit transistors which help to determine if a particular trouble is due to a faulty transistor or some other component See Figure 5 1 5 41 In Circuit Testing Intransistor circuit test ing the most important considerationis the transistor
91. ist of abbreviations in introduction to this section Section VI Table 6 2 Model 43284 Table 6 2 Reference Designation Index Cont d Reference AGRI 5040 0615 ci 0160 1235 C202 C307 C308 0160 1562 DSi 1450 0566 2110 0110 1251 2357 04260 5028 04260 5028 1250 0318 1120 0751 0757 0476 0683 4725 0683 4735 3101 0033 3101 0275 Description A6R400 NOT ASSIGNED A6R401 0683 6215 R FXD COMP 6200 5 7 7 A6R402 0683 6215 R RXD COMP 6202 5 1 4W A6R403 0683 3335 R FXD COMP 33kQ 5 7 MISCELLANEOUS HOLDER BATTERY 2 REQ D C FXD MY 0 Ol uF 10 600VDC W C2 0180 0934 C EXD TANT 100uF 20 10VDC W C3 C200 NOT ASSIGNED C201 0160 1561 C FXD MET PAPER 4uF 10 150VDCW NOT ASSIGNED C FXD MET PAPER 404F 10 277 LA MP 7 FUSE CARTRIDGE 0 1A SLOW BLOW CONNECTOR POWER 3 PIN MALE CONNECTOR FOR RECORDER CONNECTOR FOR GROUND CONNECTOR PROBE NOT SEPARATELY REPLACEABLE PART OF W2 PROBE CABLE ASS Y CONNECTOR FOR PROBE METER R FXD MET FLM 301kQ 1 1 8W R FXD COMP 4 TKQ 5 1 4W R FXD COMP 47k0 5 25w SWITCH SLIDE DPDT FOR 115 230 3101 0272 SWITCH TOGGLE ON OFF ON 3101 0273 SWITCH PUSH BUTTON BATT TEST 3101 0274 KNOB FOR 82 BRACKET FOR 82 See list of abbreviations in introduction to this section Section 1 Model 4328A Table 6 2 Table 6 2 Reference Designation Index Cont d Stock No
92. le with a resistance value Rx is connected between the current terminals only a closed current loop is formed by Reference Resist ance Rs of the instrument Rx and secondary winding of Output Transformer T1 A positive feedback loop is formed as Rs is connected to the input terminal of High Input Impedance Amplifier and through it to the Power Amplifier of the next stage and the Output Transformer T1 This loop will oscillate depending on the range setting Rs value The oscillation fre quency which is determined by capacity Co and in ductance Lo of 11 is 1kHz 100Hz 4 9 The value of Rs is selected by RANGE switch to be 500 times full scale RANGE value This oscil lator acts as a constant current source as viewed from sample Rx Also the voltage vi at both ends of Reference Resistance Rs is always 100mV peak thus when the value of Rx is equal to full scale value the _ 1kHz voltage applied to Rx will be 0 2mV peak In other words the voltage applied to the sample is of a very low level 0 2mV peak or lower at normal measurement The input impedance of High Input Impedance Amplifier is set sufficiently high so that Eg is unaffected by it 4 10 Schmitt Trigger Circuit 4 11 When the value of sample Rx is greater than set range or specifically Rs 2 Rx the loop gain of this positive feedback loop becomes 1 or smaller so that oscillation stops If the voltage terminals are connected to both ends of sample Rx at thi
93. lete A4S101 3100 1173 SWITCH RANGE ROTALY Add A4R102 04328 8607 R FXD W W 1 59 0 1 Add A4R103 04328 8608 R FXD W W 50 0 1 Add A4R104 04328 8609 R FXD W W 159 0 1 Add A4R105 04328 8610 R FXD W W 502 0 1 Add A4R106 04328 8611 R FXD W W 1502 0 1 Add A4R107 04328 8612 R EXD W W 5009 0 1 Add A4R108 0698 1465 R FXD MET FLM 1 5kQ 0 1 1 4W Add A4R110 0698 1467 R FXD MET FLM 15kQ 0 1 1 4W 1 5 Section VII Model 4328A 1 6 Delete A4R102 04328 8626 R FXD W W 1 4472 0 1 Delete A4R103 04328 8627 R FXD W W 4 942 0 1 Delete A4R104 04328 8628 R FXD W W 14 850 0 1 Delete A4R105 04328 8629 R FXD W W 49 60 0 1 Delete A4R106 04328 8630 R FXD W W 148 80 0 1 Delete A4R107 04328 8631 R FXD W W 497 12 0 1 Delete A4R108 0698 2125 R FXD MET FLM 1 49280 0 1 Delete A4R110 0698 2126 R FXD MET FLM 14 1180 0 1 CHANGE 13 Page 6 5 Table 6 2 Add A2R228 2100 1777 R VAR W W 20kQ LIN 5 1W Add A2R229 2100 1777 R FAR W W 20k LIN 5 1W Add A2R232 2100 1775 R VAR W W 5KQ LIN 10 7 Add A2R234 0757 0439 R FXD MET FLM 6 8119 1 1 8W Add A2R230 0698 3161 R FXD MET FLM 38 3k2 1 1 8W Delete A2R228 2100 1948 R VAR W W 5050 LIN 5 iW Delete A2R229 2100 1948 R VAR W W 50kQ LIN 5 1W Delete A2R232 2100 1777 R VAR W W 20kQ LIN 5 1W Delete A2R234 0757 0283 R FXD MET FLM 2kQ 1 Delete A2R230 0757 0959 R FXD MET FLM 3019 2 1 8W CHANGE 14 Page 6 4 T
94. lifier Therefore even if the oscillator s output should change the meter indication will not budge The voltage drop VR across the sample changes but 3 also changes at the same rate The relation Vg VR remains constant Stable operation is obtained as the entire circuit of this voltmeter sectionis incorporated within the negative feedback loop 4 18 The output Vp of the DC amplifier is also ap plied to the Meter and Recorder terminals Vr and V g are related linearly The response of the Record er output requires 0 6 second to reach 90 of the final reading Recorder output is 0 1V at full scale Section IV Paragraph 4 18 4 3 Z une mn A eva I 3 assy v 4 535 bviAssv 245 i 5040 29 21830 33 3343 ER e se se meste eve mms 73 Lc Pl i JU Yo iUa e E kt DE 9 AN y SEP cl 1541 E i A 5 Ms SANS y eoe n Sov res A nn PI uer D iu ae zial A ENE pp ae 7 Ee ox LISE pl ge E a EE K Ee B Ar Ne bech um Se vp Zei i 3 J 2 Ee EE EN Bec E
95. ll the maxima at measurement 1 6 when the meter needle deflects full scale being as shown in the table below Table 3 1 Characteristics of Applied Current onSamples and Maximum Power Dissipation MEASURING 1 CURRENT POWER DISSIPATION UW 3 8 2 0 0 23 O 08 0 023 0 008 0 0023 0 0008 0 00023 D 9 15 05 015 00 00 mr 1 Constant to each range 2 Proportional to meter deflection against full scale deflection 3 23 As shown in the above table the power dissi pation at sample is so small that fuses detonators and semi conductors can be safely measured 3 24 EFFECT OF SERIES REACTANCE OF SAMPLES 3 25 The meter circuit of Model 4328A does not within limits respond tothe series reactance of a sample The meter indicates only the correct value of the pure resistance of the sample as long as the series reactance of the sample at 1kHz is less than twice full scale resistance value 3 26 DC BIAS SUPERIMPOSED 3 27 DC bias may be present on samples due to Section 1 Paragraphs 3 20 to 3 34 some source Model 4328A measures with ac 1kHz but its probe circuits incorporate de blocking capaci tors The instrument will not burn out nor will any measuring error will occur even when the probes come in direct contact with a de circuit The maximum de voltage applicable between two probes is 150V 3 28 Also as the probes are floating from the in
96. m and 3m ohms ranges the internal resistances are 500m ohms and 1 5 ohms respectively Excessive resist ance at the probe contact can therefore relatively wi larger error than on other ranges The quality of the Figure 3 6 16005A Clip type Probes connection of the probes to the sample may be deter P a mined by applying pressure on the connection point 3 39 16006 Pin type Probe d and noting if the meter needle deflects Very poor 3 40 Probe tip is a voltage terminal and outer con contact or no contact whatsoever is indicated by a ductor is a current terminal Probe tip is spring deflection off scale loaded so that both terminals firmly contact the sample under test This probe is usefulfor press on contact measurement such as printed board conduc tivity measurements When using this probe in 1m range itis notalways possibleto measure the sample because of extreme deflection of the meter See Figure 3 7 3 46 IN USING THE 1 AND 3m OHM RANGE LARGE ELECTRICALEY CONDUCTIVE MATERIALS SHOULD NOT BE PLACED CLOSE TO THE PROBES OR THEIR 3 6 Model 4328A 3 47 On the 1 and 3m ohm ranges currents flow ing in the current leads are 150mA and50mA respec tively large compared to other ranges Moreover the voltmeter section has very high sensitivity so that if a conductor surface is placed near and parallel to the current loop large errors may result due to coupling between the current loop the conduct
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98. on Page IV THEORY OF OPERATION Cont d 4 12 20mV Peak Limiter 4 2 4 14 Phase Sensitive Voltmeter 4 2 Y MAINTENANCE ei 5 1 Bal 101 06006 601 rege 5 1 Bed CONTENTS ori 5 1 5 4 Performance Checks 5 1 3 6 Adjustments 2 9 5 1 5 9 Test Equipment 5 1 5 11 Maintenance ci Re 5 2 5 13 43284 Performance Checks 5 2 5 15 Mechanical Meter Zero 5 2 5 17 Linearity Check 5 2 5 18 Full Scale Check 5 2 5 19 Cover Removal and Replacement 5 2 5 21 Top Cover Removal 5 2 5 22 Top Cover Replacement 5 2 5 23 Bottom Cover Removal 9 3 8 24 Bottom Cover Replacement 9 98 5 25 Adjustment Procedures 9 3 5 27 Mechanical Meter Adjustment 5 3 5 28 DC Power Supply Check 5 3 5 30 Bias Adjustment 5 3 5 32 T302 Adjustment 3 3 0 33 Oscillator Output Adjustment 5 3 5 34 Electrical Zero Adjustment 5 3 5 35 Linearity Adjustment 9 3 5 36 Full Scale Adjustment 5 4 5 37 Recorder Output Adjustment 5 4 5 38 Reactance Component Offset 200811161 ege Ea RAO 5 4 5 39 Isolating Trouble in Transistor i CIPOUINS mica EE AREA YE 5 5 9 40 General en AO 5 5 9 41 In Circuit Testing 9 5 5 45 Out of Circuit Testing 5 5 5 47 Component Replacement in Etched Circuits
99. or and the voltage terminals Therefore at 1 and 3m ohm range the probes and their cables i e the part be tween the connector and the tip of probe must be placed 10cm or more away from the conducting sur face or the probes must be placed perpendicularly to the conductor face 3 48 A 4 terminal measurement is a method by which resistance is accurately measured by removing the effect of thermal emf and lead wire resistance H a 4 terminal device is measured with the 4 terminal method Figure 3 9 a the reading of the indicating meter wil bean Rx which is accurate However when measuring resistance by using only two terminals of a 4 terminal device as shown in Figure 3 9 b the meter will show the resistance of Rx 2Re Thusan error of 2Re Rx results in this instance If Rx is much larger than Re Rx Re gt 1000 the error will be within specifications 2 even if measuring resist ance with the method shown in Figure 3 9b 3 49 CHANGING TEST LEAD LENGTH 3 50 The values in Table 3 2 are given for wire lengths from the tip of test lead plug to the other end of lead wire and are maximafor a single lead Note that BOTH the resistance of lead wire AND the wire length must be kept within the values shown in Table 3 2 at the same time Further it is recommended that the 4 lead wires be used in a bundle as far as is possible The wire length and wire quality of the other two kinds of probes should not be changed 4 TERMINAL DE
100. other components as follows a Remove defective component from circuit board Use a low power soldering ironbecause exces sive heat may lift a conductor or damage the board b Remove solder from mounting holes with a suc tion device or a wooden toothpick DO NOT USE A SHARP METAL OBJECT SUCH AS AN AWLORTWIST DRILL SHARP OBJECTS MAY DAMAGE THE PLATED THROUGH CONDUC TOR c Shape the leads of the replacement component to match the mounting hole spacing d Insert the componentleads inthe mounting holes and position it as the original was DO NOT FORCE LEADS OF REPLACEMENT COMPO NENT INTO MOUNTING HOLES A sharp edge on the lead may damage the plated through con ductor e Solder the componentinplace andremove excess flux from the soldered areas Applyaprotective coating to prevent contamination and corrosion See Table 5 7 for recommendations 9 5 Section V Model 4328 Table 5 6 and 5 7 Table 5 6 Safe Ohmmeter Range for Table 5 5 Out of Circuit Transistor Transistor Resistance Resistance Measurements Measurements Ohm meter HP412A HP 427A HP 410 HP 410B Simpson 260 Simpson 269 Triplett E 630 Rx1K 1 5V Triplett Rx 10 1 5V T50uA 310 Connect Ohmmeter Measure Transistor Resistance Type Pos Neg ohms lead to lead to Small zs m Signal emitter 10K 100K Power several PNP Small Silicon Signal very high emitt
101. ovides up to 8 hours continuous operating Dimensions E S NOTE DIMENSIONS IN INCHES AND MILLIMETERS TT FOR TOTAL LENGTH INCLUDING 088 ADO 25 5 201 8 FOR HEIGHT IRGLUOING FEET ADD 7 26 1 TOP A 1 A mn ten i REAR APRON 25 R 5 95 32 2 Model 4328A Section II Paragraphs 2 1 to 2 16 2 1 INTRODUCTION 2 2 This section contains information for unpacking inspection repackaging storage and installation of the Model 43284 2 3 UNPACKING AND INSPECTION 2 4 11 the shipping carton is damaged ask that the carrier s agent be present when the instrument is unpacked Inspect the instrument for damage scratches dents broken knobs etc If the instru ment is damaged or fails to meet specifications notify the carrier and the nearest Hewlett Packard Field Office see list at back of this manual Retain the shipping carton and the padding material for the carrier s inspection The field office will arrange for the repair or replacement of your instrument without waiting for the claim against the carrier to be settled 2 5 STORAGE AND SHIPMENT 2 6 PACKAGING To protect valuable electronic equipment during storage or shipment always use the best packaging methods available Your Hewlett Packard field office can provide packing material such as that used for original factory packaging Contract packaging companies in many cities can provide de pendable c
102. placed between the two sections identifies the country where the instrument was manu factured The serial number appears on a plate located on the rear panel All correspondence with Hewlett Packard Sales Service Offices with regard to an in strument should refer to the complete serial number 1 13 MANUAL CHANGES 1 14 This manual provides operating and service informationfor the HP Model 43284 a portable instru Table 1 1 Resistance Range 0 001 to 100 ohms in a 1 3 10 Sequence Resolution max resolution 0 02 on 0 1 scale 0 05 on 0 3 scale Accuracy 2 of full scale Accuracy is un affected by series reactance of samples with magnitude of up to 2 times full scale resistance value Measuring Frequency 1000Hz 100Hz Voltage across sample 200 peak at full scale Maximum voltage across sample 20mV peak in any case Measuring current and power dissipationin sample Range E Applied Maximum Dissipation ohms Current mA in Samples uW eo Constant for each range Proportional to meter deflection full scale values given Superimposed DC 150V de maximum may be superimposed on samples from an external source Recorder Output 0 1V dc output at full scale meter deflection Output resistance approx 1k ohm Operating Temperature Range 0 to 55 C Power 115 230V 10 50 to 60Hz 1 5W Op tional rechargeable battery provid
103. rrect range settings are used 1 5 11643284 can be used to measure heat sensitive samples because the power dissipation in samples is very low Voltage applied to samplesis automatically limited to permit safe measurement of fuses and ex piosives 1 6 A unique phase diseriminator in the meter cir cuit insures accurate measurement of samples with series reactance up to twice full scale resistance 1 7 150V superimposed de bias may be present on samples during measurement Thus direct measure ment of incremental resistance of back biased diodes may be performed permitting use of the 4328 in the design of semiconductor circuitry 1 8 Complete specifications of the Model 4328A are given in Table 1 1 1 9 ACCESSORIES FURNISHED 1 10 Model 16005A Clip type probe 16006A Pin type probe and 16007A B Test Leads are furnished these probes or test leads may be mixed or matched in any configuration determined by the form of the sampie to be measured Also detachable power cord is supplied with the Model 4328A Miliiohmmeter Figure 1 1 Model 4328A Milliohmmeter 1 1 Section 1 Paragraphs 1 11 to 1 14 1 11 INSTRUMENT IDENTIFICATION 1 12 Hewlett Packard uses a two section nine character 0000300000 or eight character 000 00000 or 000J00000 serial number The first three or four digits serial prefix identify a series of instrument the last five digits identify a particular instrument in that series A letter
104. ruments with lower serial prefix or number Technical corrections to this manual if any are called errata and are listed on a separate Manual Changes sheet supplied with this manual 7 7 LATER INSTRUMENTS If the serial prefix of your Model 4328A is above 1828 refer to a separate Manual Changes sheet supplied with this manual Locate the serial prefix of your instrument and make the indicated changes 7 8 EARLIER INSTRUMENTS Backdating Changes If the serial prefix or number of your Model 4328A is 1828J05710 and below refer to Table 7 1 for the changes necessary to adapt this manual to your particular instrument Locate the serial prefix or number of your instrument in the table and make the indicated changes Note that instrument component values that differ from those in this manual yet are not listed in this backdating changes should be re placed using the part number given in this manual Section VII Paragraphs 7 1 to 7 8 N VII OPTIONS Table 7 1 Backdating Changes Instrument Serial Prefix or Number Make Changes 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 723 724 00050 to 00120 723 724 00121 to 00210 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 747 748 00211 to 00270 3 4 5 6 7 8 9 10 11 12 13 14 15 16 177 18 19 20 810 811 00271 to 00300 5 6 7
105. s as current and accurate as possible Hewlett Packard recommends that you periodically request the latest edition of this supplement Free copies are available from all HP offices When requesting copies quote the manual identification information from your suppiement or the model number and print date from the title page of the manual ER HEWLETT Date Div Nov 18 1986 33 PACKARO Page of 3 Printed in Japan SERIALS 18281065421 AND ABOVE See Section Vil for Other Serial Prefixes COPYRIGHT YOKOGAWA HEWLETT PACKARD LTD 1967 9 1 TAKAKURA CHO HACHIOJI SHI TOKYO JAPAN Manual Part No 04328 90008 Microfiche Part No 04328 90058 Printed JAN 1982 Table of Contents Section Page I GENERAL INFORMATION ss 1 1 lel BDOSCTIIDUEHOD desse o REO 1 1 1 9 Accessories Furnished 1 9 1 11 Instrument Identification 1 2 1 13 Manual Changes e 1 2 INSTALA DION e EEG a 2 1 duj G Kee DOR este Sogo 2 1 2 3 Unpacking and Inspection 2 1 2 5 Storage and Shipment 2 1 2 6 780960 108 sita 2 1 2 7 Environment 2 1 2 9 11851311091011 an 2 1 2 10 Combining Case 2 1 2 12 Adapter Frame 2 1 2 14 Power Connection o 2 1 2 15 Line Voltage sense 2 1 2 16 Power CADIE senate 2 1
106. s time the voltage drop at both ends of Ry is zero A trigger circuit is added to cause the meter needle to read above full scale whenever the value of Rx is greater than the set range In other words when the oscil lator s power decreases to below a certain level the Schmitt Trigger circuit provides a DC voltage to the DC Amplifier in the input stage of the Meter causing it to deflect off scale 4 12 20017 Peak Limiter 4 13 The 20mV peak Limiter connected to the cur rent terminals limits the a voltage applied to the sample to 20mV peak It does this by comparing the 4812 output level toa reference diode When a given level is exceeded the 1kHz signal is amplified and rectified and the resultant de level is used to reduce the oscillator gain 4 14 PHASE SENSITIVE VOLTMETER 4 15 When the current terminals and the voltage terminals are connected to the sample Ry ft is as sumed that the range setting of 4328A at this time is correct the voltage drop at both ends of Ry is applied to AC Amplifier via Input Transformer T2 where it is amplified Its output is connected to the input of the Phase Detector The other input of the Phase Detector is driven by a Flip Flop driven by 1kHz from the oscillator section That is the output signal of the AC Amplifier is synchronously rectified by a volt age which is in phase with the current flowing in the Reference Resistance Rg i e current flowing in sam ple Rx Thus a sample Z
107. t conditions and special information for use when maintain the instrument 8 5 TROUBLESHOOTING 8 6 Table 8 1 is the Overall Troubleshooting chart for the milliohmmeter Procedures for isolating cir cuit malfunctions to specific stages are based on the use o the YEW Type 2782 Standard Resistors and YEW Type 2786 or GR Model 1432T Decade Resistance Box and the calibrationprocedures in Section V The information obtained when calibration is attempted is used to troubleshoot the instrument 8 7 Table 8 1 contains references that direct the user to the detailed troubleshooting charts Table 8 2 through 8 10 The detailed charts refer the user to transistor stages In a few instances specific parts are called outas being possible causes of circuit mal function however the troubleshooting charts are not intended to locate specific parts that have failed They are intended to locate only malfunctioning stages 8 8 SCHEMATICS 8 9 The schematics contain signal routing informa tion nominal voltage levels and notes that assist in understanding the circuit They are laid out to show electrical operation and are not intended as wiring diagrams 8 10 Component location photographs next to the schematics indicate the physical location of parts Test points are also shown 8 11 Factory selected parts are indicated by an asterisk These are components that generally are installed to fulfill circuit operation requirements The
108. t turnedoff rotate meter adjust ment screw clockwise until pointer approaches zero mark from the left b Continue rotating clockwise until pointer coin cides with zero mark If pointer overshoots continue rotating adjustment screw clockwise until pointer once again approaches zero mark from the left c Rotate adjustment screw about three degrees counterclockwise to disengage itfrom the meter suspension 5 17 LINEARITY CHECK a Attach the Model 16005 probe to the 43284 and set the range switch to 10082 Table 5 2 Linearity Test Standard HP Model HP Model Decade 4328 A 4328 Resistor Meter Range Settings Settings Readings 9 2 100 98 0 Model 4328A b Connect the Model 43284 probe to the Decade Resistance Box YEW Type 2792 or GR Model 14327 c Switch the Decade Resistor providing 0 to 1008 in 10 steps d The Model 4328 A should read as shown in Table 5 2 5 18 FULL SCALE CHECK a Attach the Model 16007A B Test Lead to the Model 4328 A b Connect the Test Leads to Standard Resistor of 0 001 to 1002 and check the full scale readings of the Model 4328A The Meter should read as shown in Table 5 3 2 19 COVER REMOVAL AND REPLACEMENT 5 20 The side covers can be removed and replaced independently of the top and bottom covers Each side cover is held in place by four screws retained by nuts which are fastened to the side frames 5 21 TOP COVER REMOVAL Atthe rear
109. tage close to the supply voltage Any difference is due to current leakage through the transistor In general the smaller the current the better the transistor If collector volt age does not change the transistor has either an emitter collector short circuit or emitter base open circuit Section V Paragraphs 5 39 to 5 52 9 45 OUT OF CIRCUIT TESTING 5 46 The two common causes of transistor failure are internal short and open circuits Remove the transistor from the circuit and use an ohmmeter to measure internal resistance See Table 5 5 for meas urement data 5 47 COMPONENT REPLACEMENT IN ETCHED CIRCUITS 5 48 General Etched circuit boards are sensitive to heat and to scratches with sharp objects This is because the conductors are plated on to the circuit boards and the plating extends through the component mounting holes Whenever possible avoid unneces sary component substitution It can damage the circuit board and adjacent components See Table 5 7 for recommended tools and materials 9 49 AXIAL LEAD COMPONENTS 5 50 Resistors tubular capacitors and other axial lead components can be replaced without unsoldering Cut the component leads near the body of the defective component remove the component and straighten the leads left in the board Wrap leads of the replacement component one turn around the original leads solder the connection and clip off the excess lead 9 91 OTHER COMPONENTS 5 52 Replace
110. tion VIL Model 4328A CHANGE 7 Page 6 3 Table 6 2 Change AICR305 and AICR310 to HP Part No 1902 3110 DIODE BREAKDOWN 2 Service Note Use 1902 0049 for replacement Page 8 21 Figure 8 20 Change the statement of A1CR305 and 11310 to 5 9V CHANGE 8 Page 6 5 Table 6 2 Change A2R230 to HP Part No 0757 0199 R FXD MET FLM 21 5865 1 1 8W Change A2R234 to HP Part No 0698 3155 R FXD MET FLM 4 64kQ 1 1 8W Page 8 19 Figure 8 18 Change A2R230 to 21 5kQ and A2R234 to 4 64852 CHANGE 9 Page 6 4 Table 6 2 Change A2C207 to HP Part No 0140 0204 C FXD MICA 47pF 5 300VDCW Service Note If the accuracy on the 1002 Range does not meet with specifications when a sample under test has a series reactance up to two times full scale resis tance proceed following adjustments 1 Adjust 8 2 Change 20207 to a value between 47pF and 91pF 3 Change A5C202 to a value between 0 02007 and 0 024 uF e Page 8 19 Figure 8 18 Change 2207 to CHANGE 10 Page 6 2 Table 6 2 Change HP Part No of METER TRIM to 5020 0704 Change HP Part No of SIDE COVER to 5000 0703 Change HP Part No of COVER TOP to 5070 0706 Change HP Part No of COVER BOTTOM to 5000 0711 Change HP Part No of PANEL REAR to 04328 1022 Change HP Part No of PANEL FRONT to 04328 1021 Page 6 11 Table 6 2 Add A7 04328 7035 POWER SWITCH ASS Y Add ATR1 ATR403 NOT ASSIGNED Add ATR404 0757 0476 R FXD MET FLM 80186 1 1 8W
111. troduction to this section 6 3 Section VI Table 6 2 Model 4328A Table 6 2 Reference Designation Index Cont d 04328 7022 04328 8702 A2CI A2C200 A2C201 A2C202 A2C 203 0180 1031 A2C204 0160 1548 A2C205 0180 1031 A2C 206 0180 1029 A2C207 0160 2204 A2C 208 0121 0215 A2C 209 0180 1031 A2C210 0180 1029 A2C211 0180 1031 A2C212 0160 1554 A2C213 0180 0210 A2C214 0180 1029 A2C215 0180 1029 A2C216 0180 1029 A2C217 0180 1029 A2C218 0160 0127 A2CR1 A2CR200 A2CR201 1901 0040 A2CR202 1901 0040 A2CR208 1901 0040 A2CR204 1901 0040 A2CR205 A2C R206 1901 0040 A2CR207 1902 3150 A2C R208 1901 0040 1902 3150 1902 3172 A2CR209 A2CR210 A2Q1 A2Q200 A2Q201 1854 0854 A2Q202 1854 0854 A2Q203 1854 0854 A2Q204 1854 0854 A2Q205 1854 0854 A2Q206 1854 0221 A2Q207 A2Q208 1854 0854 A2Q209 1854 0854 anana QQQQ0 ooooo Description PHASE SENSITIVE VOLTMETER ASS Y BOARD BLANK P C NOT ASSIGNED NOT ASSIGNED NOT ASSIGNED C FXD TANT 4 TuE 20 15VDCW FXD MY 0 22uF 107 DC W FXD TANT 4 TuF 20 15VDCW FXD TANT 117 20 7 FXD MICA 100pF 5 300VDCW VAR CER 7 45pF 350 VDCW FXD TANT 4 7uF 20 7 FXD TANT 1uF 20 15VDCW FXD TANT 4 7uF 20 15 7 FXD MY 0 474F 10 200VDCW FXD TANT 3 3uF
112. ual y SAFETY SYMBOLS General Definitions of Safety Symbols Used On Equipment or In Manuals d WARNING CAUTION Note Instruction manual symbol the product will be marked with this symbol when it is necessary for the user to refer to the instruction manual in order to protect against damage to the instrument Indicates dangerous voltage terminals fed from the interior by voltage exceeding 1000 volts must be so marked Protective conductor terminal For protection against electri cal shock in case of 8 fault Used with field wiring terminals to indicate the terminal which must be connected to ground before operating equipment Low noise or noiseless elean ground earth terminal Used for a signal common as well as providing protection against elec trical shock in case of fault A terminal marked with this symbol must be connected to ground in the manner described in the installation operating manual and before operating the equipment Frame or chassis terminal A conneetion to the frame chas sis of the equipment which normally includes all exposed metal structures Alternating current power line Direct current power line Alternating or direct current power line A WARNING denotes a hazard 11 calls attention to a pro cedure practice condition or the like which if not correctly performed or adhered to could result in injury or death to personnel The CAUTION sign denotes a haz
113. ure op OSENI GEEH 7 souxpedux jn ui gig gid Huy Oy 81 uon uornox HOTEL FOF Ares ISO 529 Am sposare indu S90943192 ayy sapinold dora dya SIUL SILO pure greO 107 sqan yad yno yenba alnSut AZSHO PIP 6 2 103 1 doz Hi aprlaoxd pue 9185 9 8 3 mdu ergo oj joodsar yy m aseyd Jo NO ORE 38 BIED Sap LIES JO mo 93 9780 UMNO gIgO pue 8180 via pajdnoa 9 81 GTD hnos 399402 e wao LIgO Y 9160 UORMOS BEEN GIRO IE JO staar 6060 OSE SH 3 PAU 889654 jndjno 363586 op rupyyscdoad yadur pa l dodoxd 1 NO goed sdasy 190107 1293333 8053 DILO 864 SjUOXIDATA duos oApisod ayy ATUO Paap OT MO 608 1 3 1182 OIEHO 808 54 S2uvpaduui zumo MOT sepiaord 1omorjoj ars pajdnos 35 2086 oz lagi Dog iOS evx d 2 iGIS ESE ICE p 22 8 iui 2 5353 3 e ae a o a A 2 u TOP 8999u WER afhnioA pozmbas oy aplaoad FIED puz 5158 5 1 5 oy doi dipr 4399 3389131 AHDE ASSY Sv z OSE AT am i y KIT 1 1 DE MT RARE PEREN tantup 3003833 1930 0 a OA SEG 23387 jo avuosoadd su ui 0717745 aar usu MOTO vul SHE 70821704 31504 op 091 Parte ay eu adezpoa Tay Sry vonendde jo 702 BE UI UMOP
114. used after any adjustments have been made 9 3 CONTENT 5 4 PERFORMANCE CHECKS 2 5 The performance check procedures will verify Milliohmmeter performance during incoming inspec tion periodic evaluation calibration and trouble shooting The tests can be performed without requir ing removal of the access instrumentcase Specifica tions in Table 1 1 are the performance standards Should the Milliohmmeter fails to meet any of the performance test specifications refer to the trouble shooting diagrams 5 6 ADJUSTMENTS 9 7 The adjustment procedures describe the adjust ments necessary to calibrate the Milliohmmeter Adjust the Model 43284 only when itis determined that the instrument is actually out of adjustment and not malfunctioning due to a circuit failure 9 8 Several circuit components are factory selected to meet specific circuit requirements The factory selected parts are indicated on the schematic dia grams 5 9 TEST EQUIPMENT 5 10 Instruments and accessories required for adjusting and testing the 4328A are listed and briefly described in Table 5 1 Instruments used to check 4328 performance must meet or exceed the specifi cations given Table 5 1 Recommended Test Equipment Instrument Type Required Characteristics rm Recommended Model 0 001 to 100 ohms Standard Resistor Accuracy 0 1 Decade Range 10 to 100 ohms Resistance Box Accuracy 0 1 Range 12 Ohm Meter Accuracy 5
115. ustom packaging on short notice Here are a few recommended packaging methods a RUBBERIZED HAIR Cover painted surfaces of instrument with protective wrapping paper Pack instrument securely in strong corrugated container 350 lb sq in bursting test with 2 inch rubberized hair pads placed along all sur faces of the instrument Insert fillers between pads and container to ensure a snug fit b EXCELSIOR Cover painted surfaces of instru ment with protective wrapping paper Pack instrument in strong corrugated container 350 lb sq in bursting test with a layer of ex celsior about 6 inches thick packed firmly against all surfaces of the instrument 2 7 ENVIRONMENT Conditions during storage and shipment should normally be limited as follows a Maximum altitude 20 000 feet b Minimum temperature 40 F 40 C c Maximum temperature 167 F 75 C 2 8 INSTALLATION 2 9 The Model4328Ais a submodular unit equipped with plastic feet and tilt stand for bench operation as shipped from the factory However when used in combination with other submodular units it can De benchand orrack mounted The HP combining case and adapter frame are designed for this purpose and are available through your Hewlett Packard Sales and Service office 2 10 COMBINING CASE HP Models 1051A or 10524 2 11 The combining case is afull module unit which accepts various combinations of submodular units Being a full module unit
116. x Ry jXx the voltage 4 2 Model 4328A drop across the sample will be v vp Jvx The in put of the AC Amplifier will also be the voltage drop vx whose phase differs from vp by 90 The Phase Detector detects only the voltage drop VR which is in phase with the current in Rg and provides DC voltage output proportional to Vp only Therefore no error is present in the meter reading due to Vx or effec tively the reactance Xy gives rise to no error N x oo x m Set gt I i since Filip Flop Figure 4 3 Operation of Phase Detector 4 16 The dynamic ranges of the AC Amplifier and Phase Detector of the next stage are sufficiently great that errors due to Xx will be less than 1 as long as the value of reactance Xx at 1kHz does not exceed twice the range setting Thisis an important feature especially with reference to AC measurement of low resistance wherein the series inductance component in the sample is a significant part of the total ac im pedance 4 17 DC signal Vp which was synchronously recti fied by Phase Detector is amplified and applied to the Modulator of the next stage This Modulator has two inputs and one output an AC signal vp corresponding to the product of Vr proportional to the resistance value R and the 1kHz AC signal vg which isin phase with the current in Rg The AC output signal vg is Model 4328A negatively fed back to the input of the AC Amp
117. y may be the nominal value or they may be some value close to nominal In any case if the component fails circuit operation should be verified after these components are replaced 8 12 Component values are shown as follows unless otherwise noted Resistance in ohms capacitance in microfarads and inductance in microhenries 8 13 Wire color is indicated as WHT YEL VIO First color identifies ground color second color identifies wide stripe third color identifies narrow stripe 8 1 Section VIH Model 4328 Figure 8 1 SYMBOLS SWITCH DESIGNATIONS FRONT PANEL REAR PANEL KNOB CONTROL A3SIBR 2 1 2 SCREWDRIVER ADJUST MAIN SIGNAL PATH FEEDBACK PATH SWITCH 1 WITHIN ASSEMBLY A3 CONDUCTING ELEMENT WIPER MOVES TOWARD UCW WHEN CONTROL iS ROTATED CLOCKWISE B 2ND WAFER FROM FRONT POWER LINE GROUND 15 ETC jn CIRCUIT COMMON GROUND TEST POINT B REAR OF WAFER ESFRONT AND GATE INHIBIT GATE 2 1 2 TERMINAL LOCATION 23 VIEWED FROM FRONT OR GATE WAVEFORMS SHOWN ARE TYPICAL REFERENCE DESIGNATIONS REFERENCE DESIGNATIONS WITHIN ASSEMBLIES ARE ABBREVIATED ADD ASSEMBLY NUMBER TO ABBREVIATION FOR COMPLETE DESCRIPTION ASSEMBLY ABBREVIATION COMPLETE DESCRIPTION A25 Ci A25C1 A25A1 CRI 25 i CR NO PREFIX J3 JS Assembly Stk No Assembly Serres No Assembly Assembly includes A25A1 used to document

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