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INSTRUCTION MANUAL

MODEL 153

MICROVOLT-AMMETER

C

COPYRIGHT 1974

KEITHLEY

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Содержание 153

Страница 1: ...N MANUAL MODEL 153 MICROVOLT AMMETER C COPYRIGHT 1974 KEITHLEY INSTRUlVlENTS INC 2 8 5 A U R 0 R A R 0 A 0 C LEV E LAN O 0 H 0 4 4 1 3 9 1 2 e 2 4 a 0 400 T E l EX 9 8 5 4 e 9 CAB L E K E T H LEV I NT...

Страница 2: ...153 CONTENTS SECTION PAGE SPECIFICATIONS iv 1 GENERAL DESCRIPTION 1 2 OPERATION 3 3 APPLICATIONS 12 4 CIRCUIT DESCRIPTION 13 5 SERVICING 17 6 CALIBRATION 23 7 ACCESSORIES 33 8 REPLACEABLE PARTS 37 SC...

Страница 3: ...ss Resistor R121 Wave Form for Input Modulator El01 Demodulator Wave Form for Full Scale Input on I Volt Range Typical Model 153 Drift Chart Model 153 Interior Model 153 Interior Capacitor Tube Batter...

Страница 4: ...o 10 ampere In 21 overlapping hand 3 rang l ACCURACY exclusive of notee and drift 2 of full KII on 3 x 10 to 10 ampere ranges 3 ot tun Kate on 10 to 10 ampere rangea of full ecale on 10 and 3 x 10 Imp...

Страница 5: ...e in formation is supplied as a supplement to this Manual in order to provide the user with the latest improvements and corrections in the shortest possible time Many users will transfer this change i...

Страница 6: ...Verso Filler Page z z...

Страница 7: ...ull detec to r applications Line frequency reject ion is good a power line or twice power line frequency which is 40 db p c greater than full scale affects readings less than 0 5 Isolation greater tha...

Страница 8: ...GENERAL DESCRIPTION CTION vOl r PUT I e 0 0 f Uh SCA4 I I IS M TaA z O FIGURE 1 Model 153 Front Panel 2 MODEL 153...

Страница 9: ...vider the Control 1s also somewhat effective on the 3 volt range It has much less effect on other ranges e INPUT Receptacle The INPUT Receptacle is a Teflon insulated Triaxi a l type con nector Its ce...

Страница 10: ...ERATION UNOTION __f FUNCTION SWITCH l 51 T INPUT RECEPTACLE Jl FIGURE 2 I I s I I v 1 RANGE SW ITCH 52 1ItIII 0 tiECHAN I CAL ZERO METER t I SWITCH S3 ZERO CONTROL R155 Front Panel Controls 4 HODEL 15...

Страница 11: ...MODEL 153 _ FIGURE 3 Rear Panel Terminals 5 J _ OPERATION...

Страница 12: ...he higher input resistance obtained by set ting the FUNCTION Switch to VOLTS OPEN To maintain the accuracy of measurements the in put resistance should be 100 times the source resistance See Table 1 1...

Страница 13: ...mps 1 k 3 my 16 10 volts 200 11 2 Mr 10 microamps 1 k 10 my 16 30 volts 200 11 2 r t 30 microamps 100 3 mv 50 100 volts 200 l L 2 M 100 mi c roamps 100 10 mv 50 300 volts 200 11 2 M 300 microamps 10 3...

Страница 14: ...ers The Model 370 allows maximum capabi lity of the Model 153 It has 1 line arity 10 chart speeds and can float up to ISOO volts off ground Using the Model 370 with the Model 153 avoids interface prob...

Страница 15: ...d Since the circuit low and ground are connected with the Adapter do not use it for off ground measurements NOTE Keithley Instruments Inc has several booklets available on low voltage measure ments an...

Страница 16: ...er mount all stacks of lugs on a thick metal plate having high thermal conductivity Thermal conductivity between the junctions and the heat sink can be kept at a high level by using mica washers or hi...

Страница 17: ...he Mo d e l 1 5 3 l ine freq uency re j e c t i on re fers t o t h e t o t a l a c vo l t a g e a p p ea r i n g a t the input t e rmina l s There fore in nu l l d e t ector a pp l i ca t ions i t i s...

Страница 18: ...Verso Filler Page z z...

Страница 19: ...ER So l id s ta t e c ir cu it d e s ign o f t en requires an ammet er with an extreme ly wide rang e For examp l e in t he c ir cu i t of Figure 7 g a t e current i s ab ou t 10 1 1 ampere d r a i n...

Страница 20: ...Verso Filler Page z z...

Страница 21: ...inp ut current f l ows The res i s t o r u s ed and t h e in s t rument vo l t a g e rang e d e t ermines the curren t s en s i t ivity NOTE Circuit d e s igna t i ons refer t o s chema t i c d iagram...

Страница 22: ...rang e s are chang ed Thi s main ta in s an a pproxima t e ly cons t a n t f e edb a c k f a c t o r o n all b u t t h e mo s t s ens i tive rang e s c Th e ou tpu t o f the ac amp l i f ie r i s a p...

Страница 23: ...rec t i f iers s u p p l i e s a d c vol t a g e f o r the f i r s t amp l i f i e r t u b e f i lame n t t o r e d u c e amp l i f i e r n o i s e T h e po e r s u p p l y ou t pu t i s reg u l a t...

Страница 24: ...e y I n s t r umen t s Mod e l 6 l 0B E l e c t r o me t e r T e k t r on i x Typ e 504 O s c i l l o s c o p e d c to 450 kc 5 mv cm s e n s i t i v i t y T e k t ronix Typ e P6006 P r o b e 1 0 me...

Страница 25: ...u p p l i e d by Ke i t h l e y I n s t rument s I n c o r i t s r e p r e s entat ive Tub e V IO L i s aged r e p lac e only with a Ke i t h l e y p a r t 5 4 TROUBLESHOOT ING a The f o l l owing pro...

Страница 26: ...t h e s e va l u e s me a s u r e d wi th t h e Mod e l 6 1 0 B t o 10 t h e Mod e l 1 5 3 inpu t i s shor t ed Th e Mod e l 1 5 3 contro ls a r e s e t MET ER S o i t ch FUNCTION Swi tch RANGE Sw i t...

Страница 27: ...en t Ba t t e ry B IO I D r B I0 2 fau l t y Exc e s s i v e ov er l oa d damag e d r e s i s t o r R10 2 Tub e V IO L o r V I0 3 fau l t y Diod e D 10 3 f au l t y Meter mechanica l z ero out of _ 1...

Страница 28: ...or t h e output across res i s tor R1 2 l F igur e 22 wi th the Typ e P60 0 6 Pr ob e c S e t the RANGE Swi tch t o 30 MI LLIVOLTS Ad j u s t the MULTIVI BRATOR FREQUENCY ADJ Po t en t i ome t er R2 1...

Страница 29: ...t h e r e a r d e c k o f t h e RANGE Swi t ch S l Figure 1 9 t o t h e c i r c ui t l ow t e rm i na l o f t h e I N PUT Re c e p t a c l e S e t the METER Swi t ch t o the FUNCTION Swi tch t o OPEN...

Страница 30: ...o i t c h t o Z ERO C ENT E R Turn down t h e Os c i l la t or ou tpu t amp l i tud e a n d make s u re t h e Mod e l 1 5 3 i s p rop e r l y z e ro ed The re s hou ld b e les s than 0 5 change in th...

Страница 31: ...N SCHEDULE Ca l ib ra t e t h e Mod e l 1 5 3 yea r l y T h i s norma l l y me a n s p e r f o r ming th e b ia s ad j u s tmen t pa rag raph 5 5 me t er ad j u s tmen t parag raph 6 3 a t t enua t o...

Страница 32: ...ROVOLTS Shunt the input with a 2 2 me gohm shie l ded re s is tor b etween the h igh c ent e r t e rmina l and low inne r sh i e l d o f the INPUT Re cept ac l e Set the FUNCTION Switch to AMPS zero t...

Страница 33: ...l e for a fu l l sca l e inpu t s igna l s hou ld b e l e s s than 1 s e c ond o n t he lOa m i c r o vo l t rang e l e s s than 5 s e cond s o n t h e 3 0 and 10 microvo l t rang e s b Ap p ly the s...

Страница 34: ...1 5 3 MICROVOLT AMMET ER j l pC106 F1g8 21 22 FIGURE 19 Model 153 Interior Component s and a s s emb lies are shown in the view with the me t er facing left Figure 20 shows the cha s s i s view from t...

Страница 35: ...ION 2 _ I I 30 1 30 1 30 2 I R1 5 h L _ _ F IGURE 20 Mod e l 1 5 3 Int erior C omp onen t s and a s s emb l ies are s hown in t he v i ew with t he me ter fa cing right Figure 19 s hows the cha s s i...

Страница 36: ...6 i I I p u II c Gr Wi MODEL 1 5 3 MI CROVOLT AMMETER p HJ t FIGURE 2 1 Capa c i tor Tub e Ba t t ery and Modu lator Locations on Printed C i r cui t Board PC I0 6 Re fer t o Figure 22 for res i s t o...

Страница 37: ...MODEL 1 5 3 MI CROVOLT AMMETER CALIBRATION _ FIGURE 22 Res i s t or Locations on Print ed Circuit Board PC106 Re f e r to Figure 2 1 for the location o f other c omponents 29...

Страница 38: ...ght Component Locations on Mod e l 1 5 3 Rear Chas s i s Panel The view is f rom the ins ide of the ins trument MODEL 1 5 3 Ml CROVOLT AMMETER FIGURE 23 l e f t Component Lo ca t i on s f r Pr i n t e...

Страница 39: ...OLT AMMETER R 1 3 III Rl44 R1 35 t RI FIGURE 25 Component Loca tions on Rang e Switch SI 31 P 1 4 1 R 1 4 3 R 1 4 J U R 1 6 6 R1 64 Rlt5 CALIBRATION R I C ott 5 7 I FIGURE 26 Componen t Locat ions on...

Страница 40: ...CALIBRAT ION 0 1 _ jI t _ MODEL 1 5 3 MICROVOLT AMMETER jU 1 _ _ i t jt _ FIGURE 27 Component Loc a t ions for Mode l 153 Power Supp ly and Mu l t ivibrator 32...

Страница 41: ...t i on s For p ermanen t c o n n e c t i on s remove the a l l ig a t o r c l i p s and a t t a ch t h e l e a d t o a c i r c u i t w i t h l ow t h erma l s o l d e r Mo d e l 1 50 3 o r b y a c r i...

Страница 42: ...t s t he c on t en t s o f t h e Ki t S e c t i o 7 6 MODEL 60 1 2 ADAPTER Figure 3 2 The Mod e l 60 1 2 i s a t r i a x i a l t o c o a x i a l ad a p t e r I t ma y b e u s ed t o conn e c t u h f a...

Страница 43: ...ach t h e moun t i ng pane l 2 t o t h e ra c k w i t h f ou r 10 s c s and k e p nu t s Fa s t en t h e Mod e l 1 5 3 t o t h e moun t i ng pa n e l wi t h four 10 s c r e w s Fa s t e t h e f i l l...

Страница 44: ...Verso Filler Page z z...

Страница 45: ...u g h Ke i t h l e I n s t rumen t s o r i t s r e p r e s e n t a t i v e s In o r d e r i ng a pa r t n o t l i s t ed i n t h e Rep l a c e a b l e Pa r t s Li s t c omp l e t e l y d e s c r i b e...

Страница 46: ...p e Numb er D30 1 Si l i c on IN3 2 5 6 D30 2 S i li con IN3256 D30 3 Si licon IN3253 38 M f g Cod e 80 1 64 80 1 64 80 1 64 7 1 5 90 7 2 9 8 2 1 4 6 5 5 5 62 89 1 4 6 5 5 5 6 2 89 0 2 7 7 7 7 29 8 2...

Страница 47: ..._ _ _ _ Fus w 0 5 amp Mfg TyPe MDL 7 1400 FU 4 Fus e s l ow b low 0 25 amp Mfg No 3 1 3 250 7 59 1 5 FU 1 7 3 3 Fus e Ho lder Mfg No 3420 12 7 59 1 5 FH 3 Neon Lamp Mfg No NE 2U Receptac le Specia l...

Страница 48: ...2 Comp 0 1 1 2 1 Comp 0 1 1 2 1 Comp 0 1 1 2 1 Comp 0 1 1 2 1 Deb 7 9 7 2 7 Deb 7 9 7 2 7 Mt F 0 7 7 1 6 DCb 7 9 7 2 7 Comp 44 6 5 5 Comp 0 1 1 2 1 Comp 0 1 1 2 1 Comp 0 1 1 2 1 Comp 0 1 1 2 1 Comp 0...

Страница 49: ...4655 RC0 7 R7 6 2 2K 25 R15 1 6 80 n 10 1 4 w Comp 44655 ROO 7 R7 6 680 2 5 R15 2 2 20 n 10 1 4 w Comp 44655 ROO 7 R7 6 220 25 Rl53 1 20 n 10 1 2 w Camp 01 1 2 1 E B Rl 1 20 25 R154 9 5 3 Ien 1 1 2 w...

Страница 50: ...1 5M 27 R20 7 47 kn 10 1 2 w Comp 0 1 1 2 1 EB Rl 4 7 K 27 R20 a 7 5 kQ 1 1 2 w Deb 7 9 7 27 CFE IS R1 2 7 SK 27 R20 9 80 k 1 1 1 2 w Deb 7 9 7 2 7 CFE 1 5 R12 S0K 27 R2 10 25 kn 10 5 w WWVar 7 1450 A...

Страница 51: ...1 J I R I 2 0 41 J V J c 6 0 0 8 I IS I IO Ii 1169 Ia 16 i bOK 5 1 1 a 7 I ouel o o t 100 I _ _ _ I 00 I 1 J t R 11 l II 1 1 J I el 0 B 1 02 S 1 1 Iso L k _ _ JYo 9ll ls l u v n s U T O T I _ A I I I...

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