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FIGURE 16.

Printed Circuit Board, PC-186.

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Содержание 610C

Страница 1: ...Model 610C 610CRSolid State Electrometers Instruction Manual A G R E A T E R M E A S U R E O F C O N F I D E N C E...

Страница 2: ...RECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF ITS INSTRUMENTS AND SOFTWARE EVEN IF KEITHLEY INSTRUMENTS INC HAS BEEN ADVISED IN ADVANCE OF THE POSSIBILITY OF SUCH DAMAGES...

Страница 3: ...ates that a shock hazard exists when voltage levels greater than 30V RMS 42 4V peak or 60VDC are present A good safety practice is to expect that hazardous voltage is present in any unknown circuit be...

Страница 4: ...components in mains circuits including the power transformer test leads and input jacks must be purchased from Keithley Instru ments Standard fuses with applicable national safety approvals may be use...

Страница 5: ...Model 610C 610CR Solid State Electrometers Instruction Manual Keithley Instruments Inc All rights reserved Cleveland Ohio U S A Third Printing December 2001 Document Number 29113 Rev C...

Страница 6: ...i CONTENTS Section Page SPECIFICATIONS ii 1 GENERAL DESCRIPTION 1 2 OPERATION 4 3 CIRCUIT DESCRIPTION 9 4 ACCESSORIES 12 5 SERVICING 15 6 CALIBRATION 24 7 REPLACEABLE PARTS 29 SCHEMATIC 37 13 22 27 35...

Страница 7: ...ric Measurements Resistance Measurements Recorder Output 100 mV Divider Network Voltmeter Configuration NORMAL Mode Ammeter Configuration FAST Mode Ohmmeter Configuration NORMAL Mode Chassis Side View...

Страница 8: ...opposite input polarity GAIN 0 1 0 3 etc to 3000 FREQUENCY RESPONSE within 3db DC to 40kHz at a gain of I and lower decreasing to DC to 100Hz at maximum gain Full output response limited to 3kHz on an...

Страница 9: ...ess than 1 millivolt per 24 hours Zero offset due to temperature change is less than 150 microvolts per C after a 30 minute warm up This offset how ever can easily be compensated for with the front pa...

Страница 10: ...used with AMPERES OHMS or COULOMBS the setting should be multiplied by the RANGE setting Controls power to instrument Also selects the meter polarity and center scale Meter zero adjustment Meter zero...

Страница 11: ...EDIUM 5101 SWITCH S107 RANGE SWITCH 5106 ZERO CHECK SWITCH S103 ZERO CONTROL POWER COARSE S102 NEON FEEDBACK SWITCH 5105 GROUND J102 INPUT J101 DS101 FIGURE 3 Front Panel Controls Model 6l0eR 1MA CAL...

Страница 12: ...he FEEDBACK Switch at FAST some insulators such as Teflon may produce ran 10m signals which show up as erratic meter deflections nsulation used in the Model 6l0C is carefully select zd to minimize the...

Страница 13: ...e re ciprocal value of the AMPERES setting For instance to obtain an input resistance of 10 megohms 107n set the RANGE switch to the 10 7 AMPERES range Then adjust the Multiplier switch to the full sc...

Страница 14: ...CABLE CONNECT UNKNOWN BETWEEN HIGH AND GND r I I I FIGURE 5 Guarded Voltage Measurement T IS ES RS ERROR IS 1M ERROR EIN ES x 100 IF EIN ES THEN 1 M IS FIGURE 6 Current Measurements Loading Error 1 V...

Страница 15: ...be The circuit connections are shown in Figure 8 mine the resistance the Multiplier setting subtracted from the voltage source setting resistance is therefore the ratio of the net divided by the curre...

Страница 16: ...r MA CAL MODEL 610C I I I I I I I I J NOTE In the FAST mode the OUTPUT is floating with respect to chassis ground 2 Current Output 1 milliampere for full scale input variable 5 with 1400 ohm recorder...

Страница 17: ...of the Model 6l0C is as follows UHF INPUT 1 The amplifier is always in a unity gain input voltage to output current converter configuration The internal circuitry is arranged such that a fu11 scale in...

Страница 18: ...f input capacity it also reduces the input drop to less than 100 microvolts 10 3 5 OIlMl ETER OPERATION a Normal Method In the normal method of resis tance measurements FEEDBACK Switch in NORMAL posi...

Страница 19: ...UHF INPUT 11 A OUTPUT RANGE MULTIPLIER GUARD FIGURE 11 Ammeter Configuration FAST Mode xl OUTPUT UHF INPUT OUTPUT MULTIPLIER FIGURE 12 Ohmmeter Configuration NORMAL Mode II...

Страница 20: ...ading Model 6105 Resistivity Chamber The Model 6105 is a guarded test fixture for measurement of surface and volume resistivity The chamber is designed in accordance with ASTM Standard Method of Test...

Страница 21: ...ace components only as necessary Use only reli able replacements which meet the specifications b The MOS FET input transistors QIOI and QI02 are specially selected and matched order only as a plug in...

Страница 22: ...h at VOLTS Multiplier Switch at 1 and the meter zeroed Measurements are with the Model 153 c At times the meter will not zero on any range with the input shorted Adjust the COARSE ZERO Switch Sl02 Fig...

Страница 23: ...nd adjusting the COARSE and MEDIUM ZERO Controls for null If null is not reached check this stage and check for shorts in the base circuit of Ql07 and Ql08 5 Connect Model 153 to the collector of Q109...

Страница 24: ...FIGURE 14 Chassis Side View 18 16...

Страница 25: ...FIGURE 15 Circuit Board pelS3 19 17...

Страница 26: ...FIGURE 16 Printed Circuit Board PC 186 20 18...

Страница 27: ...rr rr 6 0 N a IT IT ct 610C SWITCH 5101 o N rf rf rf r a a FIGURE 17 Switch MEDIUM ZERO S101 ct a ct 19 N IT I D 6 N N N Ii r1 r1 610C SWITCH 5102 FIGURE 18 Switch COARSE ZERO 5102 DECK 2 DECK DECK 2...

Страница 28: ...IO 4 jl We h R IOS I 0 jl aiC h I R IOG jL h dCI07 I RI07 dCI06 6iC h I RIOS UiC H RIO 9 f i C h RIIO J I L f 1 Rill I b 0 NC h R 1I2 i J c P P ocp IJ I C 10Z I I CI03 I j db I IJ CI04 6 db IJ C lOS I...

Страница 29: ...0 CJ CJ 0 Tl m rn ITI n n A A A N VJ 0 0 RI75 I I l RI7 Jl c u R17 3 i R t72 c jl Jl 0 J RI70 RlioS CI23 C 2 o R IGG C 1 2 1 FIGURE 20 Switch Multiplier Sl07 23 21...

Страница 30: ...CALIBRATION Zero whenever other adjustments are made a To set the mechanical Zero meter turn the METER Switch to METER OFF and set the mechanical Zero Meter adjustment for zero meter reading top scale...

Страница 31: ...rent of the Model 6l0C set the front panel controls to ZERO CRECK Button Multiplier Switch Range Switch FEEDBACK Switch METER Switch LOCK 003 10 11 AMPERES FAST Cap the INPUT Receptacle and unlock the...

Страница 32: ...from 10 6 to 10 8 am ere ranges and 4 of full scale from the 10 9 to 10 1 ampere ranges For the ranges above 10 5 ampere construct a current source whose output is 0 2S Set the Model 610C FEEDBACK Swi...

Страница 33: ...t range 1 Set the Signal Generator to 20 Hz at minimum output Release the Electrometer ZERO CHECK Button and increase the Generator output to obtain 2 volt rms at the Model GlOC output 2 Set the Gener...

Страница 34: ...26...

Страница 35: ...ETB F Fig GCb k M or meg Mfg Circuit DesiS C10l C102 C103 C104 C10S C106 C107 C108 C109 CllO Clll Cll2 Cll3 Abbreviations and Symbols ampere Ceramic disc Composition Deposited Carbon Electrolytic Alum...

Страница 36: ...Pilot Light Mfg No 53 Pilot Light Holder Mfg No 203CE Fuse slow blow 1 4A 3AG Mfg No 313 250 Fuse slow blow 1 8A 3AG Mfg Type MDL Fuse holder Mfg No 342012 Receptacle UHF INPUT Mfg No 6804 F P1ug UHF...

Страница 37: ...t Assembly Zero Check Button 80164 80164 KN 47 16988A 1 3 14 S104 Slide Switch 117 234V 80164 SW 151 2 4 S105 Slide Switch FEEDBACK 80164 SW 45 1 3 14 S106 Rotary Switch less components RANGE Rotary S...

Страница 38: ...Cb 07716 DCC RI2 68K 17 R126 249 n 1 1 2 W DCb 91637 DCF 1 2 249 Rl2 249 18 R127 249 n 1 1 2 W DCb 91637 DCF 1 2 249 R12 249 18 R128 249 n 17o 1 2 W DCb 91637 DCF 1 2 249 R12 249 18 R129 249 n 1 1 2 W...

Страница 39: ...WI 01686 7009 R95 9 1 20 R174 2 73 n 1 1 4 I WI 01686 7009 R95 2 73 20 R175 91 Q 1 1 4 I WI 01686 7009 R95 91 20 R176 8 6 kn 1 1 2 I DCb 07716 ncc R12 S 6K 14 RI77 20 kn 10 1 5W WllVar 71450 AI RP34 2...

Страница 40: ...l I 17076B Handle Assembly I HH 18 2 Screw t 1 8 32xl 4 slotted 4 D8 32xl 4 slotted P li 3 Bottom Cover Assembly I 21540C Bottom Cover Sheet Metal I 2154lC Tilt Bail I 15004B Support Assembly Right I...

Страница 41: ..._ v 3 FIGURE 21 Chassis Assembly 0 1r 11 35 33...

Страница 42: ...N Wesson Miss 39191 44655 Ohmite Mfg Co 3601 Howard St Skokie Ill 60476 56289 Sprague Electric Co North Adams Mass 58474 Superior Electric Co The 383 Middle St Bristol Conn 06012 63060 Victoreer 0 tr...

Страница 43: ......

Страница 44: ...Landsberger Strasse 65 D 82110 Germering 089 84 93 07 40 Fax 089 84 93 07 34 GREAT BRITAIN Keithley Instruments Ltd The Minster 58 Portman Road Reading Berkshire RG30 1EA 0118 9 57 56 66 Fax 0118 9 5...

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