Keithley 7011-C Instruction Manual Download

Page: 90 / 98

TC17-100 BOARD ASS’Y.
ORIENT ARROW TOWARDS
PIN 1 OF DEVICE.

25917

CHG’D U105 FROM IC-737 TO TC17-100.
DELETED SO-72.

6/18/01

Summary of Contents for 7011-C

Page 1: ...Instruction Manual Models 7011 Sand 701I C Quad 1 x 10 Multiplexer Cards Contains Operating and Servicing Information...

Page 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...

Page 4: ...e user should incorporate immediately into the manual Addenda are numbered sequentially When a new Revision is created all Addenda associated with the previous Revision of the manual are incorporated...

Page 5: ...oltage is present in any unknown circuit before measuring Users of this product must be protected from electric shock at all times The responsible body must ensure that users are prevcntcd accessand o...

Page 6: ...other suppliers as long asthey are equivalent to the original component Note that sc leaed parts should be purchased only through Kcithley Instruments to maintain accuracy and functionality of the pr...

Page 7: ...two pins IA witched 3WA bG eive load AC Sign 125V FM5 or 173V AC peak between any two pins 1A switched 60VA ke tive load COMMON MODE VOLTAGE 175 peak my pin to chassis CONTACTLIFE CONTACT POTENTIAL 7...

Page 8: ...m ipkxer ca figurations 2 1 Multiplexer bank to bank jumpers 2 2 Backplane jumpers 2 5 Typical nultiplexer switching schemes 2 6 S xl swit ing 2 7 Differential switching 2 7 sensing 2 a SMIJ co cxtiq...

Page 9: ...5 5 5 5 6 5 6 1 5 6 2 5 6 3 Introduction 5 l Handling and cleaning precautions 5 l Performance verification 5 2 Environmental conditions 5 2 Recommended equipment 5 2 Multiplexer card connections 5 3...

Page 10: ...011screw terminal connector card 3 4 Figure 36 Typical screw terminal connections 3 5 Figure 37 Cable clamp for screw terminal connector card 35 Figure 38 MI pin card terminal identification 37 Figure...

Page 11: ...ge attenuation by path isolation resistance 4 16 Figure 414 Power line ground loops 4 17 Figure 415 Eliminating ground loops 4 17 Figure 5 l Pati esistance test connections 5 4 Figure 5 2 Differadial...

Page 12: ...le 4 l Pa d Cha r r elsin 4 p Operation _ _ t 4 6 Table 5 1 verification equipment 5 2 Table 5 2 Bank is tic n test s q 5 9 Table 5 3 Channel to channel isolation test mmmary 5 11 Table 5 4 Differenti...

Page 13: ...the multiplexer are made via the 96 pin male DIN connector on the con nector card Keithley offers a variety of optional acces sories that can be used to make conneciiom to the connector card seeparag...

Page 14: ...gers that might result in personal injury or death Always read the associated information very carefully before performing the indicated procedure 1 6 Specifications Model 7011specifications are found...

Page 15: ...ack of this manuaL 1 8 Optional accessories The following accessoriesare available for use with the Model 7011 Model 70ll ST This screw terminal connector card is identical to the one provided with th...

Page 16: ...e or measure Covers single ended switching differential floating switching and sensing 24 System expansion Discusses the various config urations that are possible by using multiple cards 2 2 Basic mul...

Page 17: ...u to configure the multiplexer card in a variety of ways Typical multi plexer coniigwations include l Four 1 x 10rxtitiplexers no jumpers installed Fig ure 2 2 l Two 1 x 20 multiplexers Bank A jumpere...

Page 18: ...k C 1 Bank D I i z O utD 10 Figure 2 2 Four 1 x 10 multiplexer configuration jumpers not installed 1 x2 Bank 6 109 x2 l 1 z2 Bank C 10 2 l 1 2 Bank D 10 2 l Figure 2 3 Two 7 x 20 multiplexer configura...

Page 19: ...inputs 10 Bank A 10 I Output A 1 2 Bank B Jumpers 10 2 1 2 Bank C Jumpers 10 Z 1 2 Bank D JUllp S 100 2 One 1 x 40 multiplexer configuration jumpers installedl 2 4...

Page 20: ...nalog back rows of a compatible card installed in the other slot of the mainframe plane of the Model 7001allowing expansion with a sec ond 7001 card installed in the mainframe With the jumpers removed...

Page 21: ...in frame is electrically isolated from any card installed in the other slot The only way to connect a Model 7011 to one of these cards is to wire them to gether 7011 7001 Bank Analog 1 Of4 Backplane H...

Page 22: ...and the DUT is shown connect4 to one of the inputs for that bank The differential or floating switching configl lration is shown in Figure 2 8 The advantage of using this con figuration is that the t...

Page 23: ...path resistance 43 and the resis tame of external cabling Whenever path resistance is a consideration sensing should be used Figure 2 10 shows how to connect a Keithley Model 236 237 or 238 Source Mea...

Page 24: ...GUARD Make sure all cable shields are properly insulated before applying power WARNING Hazardous v ages may be present on GUARD Make sure all cable shields are properly insulated before applying power...

Page 25: ...ch other Figure 2 11 shows an example using two Model 7011 niultiplexer cards Multiplexer input expansion You can double the number of multiplexer inputs by simply installing two as shipped Model 7011...

Page 26: ...12matrix card installed in the other slot on the mati card 2 4 2 Mainframe multiplexer expansion Figure 2 13 shows a possible switching system using a matrix card and a multiplexer card The backplane...

Page 27: ...Card 1 Card 2 r 7012 r 701 1 Bank A Bank C Bank D __ _ __ 4xlOMatrix Quad 1 x 10 MUX Figure 2 73 Mixed card type example 2 12...

Page 28: ...de edges or shields Do not touch the board surfaces or components On connectors do not touch areasadjacent to the electrical contacts Dirt build up over a period of time is another possible source of...

Page 29: ...to form larger mukiplexers The locations of The following connection infolma the bank to bank jumper terminals for both connector tion is intended to be used by quali cards are shown in Figure 3 l fi...

Page 30: ...y from each other Remember to only handle the cards by the edges and shields to avoid contamination 2 Refer to Figure 32 and Table 31 to determine which jumpers to install 3 Using Figure 3 3 as a guid...

Page 31: ...2 Physically remove a cut jumper by unsoldering it from the PC board 3 Install a new 22 AWG jumper wire o eithley P N J 15 and solder it to the PC board 4 Remove the solder flux from the PC board The...

Page 32: ...7 remove the top half of the cable clamp as follows A Loosen the cable clamp screw enough to disen gage it from the bottom half of the cable clamp B Using your thumb and forefinger press the re taini...

Page 33: ...multi pin connector card is provided by Figure 3 8 This connector will mate to a 96 pin female DIN con nector Keithley has a variety of cable and connector accesso ries available to accommodate connec...

Page 34: ...nsisting of banks A D and inputs l 10 2 Connector description consisting of rows a c and columns l 32 3 Schematic and component layout designation l 96 The following pinout diagrams show the correspon...

Page 35: ...ilable from Keithley In Figure 3 9A connections are accomplished using a Model 7011h4TC 2 cable and a Model 7011 MTRbulk head connector The two meter round cable is termi nated with a 96 pin female DI...

Page 36: ...Figure 3 9 Typical round cable connection techniques 3 9...

Page 37: ...0 View from solder cup side of connector Note See Figure 3 6 for terminal identification Figure 3 10 Model 7011 MTR connector pinout Figure 3 11 Model 707 I KIT R with cable assembly 3 10...

Page 38: ...st system is connected to the multiplexer using the Model 7011 h4TC 2round cable assembly This cable mates directly to both the external bulkhead connector and the Model 7011 C multiplexer card as sem...

Page 39: ...Figure 3 12 Single cardsystem example multi pin connector card 3 l 2...

Page 40: ...ections Insrallation 2nd D 1 mdB _ I DUT Test Fixture I Notes Bank to bankjumpers installed I 1 Dual 1x20 Simplified Equivalent Circuit Figure 3 13 single card system example screw terminal connector...

Page 41: ...accomplish this bank to bank jumpers of fall three cards must be installed to connect Banks A B L C and D together By leaving the bac me jumpers of the cards in main fmme l installed the banks of Car...

Page 42: ...DUTTest Fixture Figure 3 14 TWO card system example multi pin connector card 3 15...

Page 43: ...DUTTest Fixture I Simplified Equivalent Circuit Figure 3 75 Two card system example screw terminal connector card 3 16...

Page 44: ...Card Connections installation DUT Test Fixture O l K R 1 40 41 DUT Test Fixture Simplified Equivalent Circuit Figure 3 16 Two mainhme system example multi pin connector card 3 17...

Page 45: ...Simplified Equivalent Circuit Figure 3 17 Two mainframe system example screw terminal connectOr card 3 l 8...

Page 46: ...is re moved and any stored energy in ex ternal circuitry is discharged 1 Mate the connector card to the relay card if they are separated IInstall the supplied 4 40 screw at the end of the card to sec...

Page 47: ...3 18 7011 C card installation in Model 7001 Ejector Arms 2 3 20...

Page 48: ...Figure 3 19 7011 scardinstallation in Model700 3 21...

Page 49: ...age to the card do not exceed the maximum signal level specifications of the card Maximum signal levels To prevent overheating or damage to the relays never exceed the following maximum signal levels...

Page 50: ...the main frame each multiplexer input must have a unique CHANNEL assignment which includes the slot num her that the card is installed in The CHANNE L assign ments for the multiplexer card are provid...

Page 51: ...organization for multiplexer channels A Slot 1 Card 1 1 B Slot 2 Card 2 1 Examples 1 18 Slot 1 Channel 18 Input 8 Bank B 2 36 Slot 2 Channel 38 xut 6 Bank Db Figure 4 3 Model 7011 programming channel...

Page 52: ...s between the channel list and the scan list The following shows an example of a scan list SCAN CHANNELS 2 1 2 3 2 21 2 25 When a scan is performed the am specified in the scanlist will be scanned in...

Page 53: ...coun auto on 25 OUTPU I 707 trigzdelO Z5 30 0uTruT707 scan 1 1 1 40 40 0InPuT707 W 50 END Line5 opensallchanneL5 Line25 Sets a l 4 second delay after each channel closes 4 4 Multiplexer switching exa...

Page 54: ...operation by isolating Banks A and B from Banks C and D and by programming the Model 7001 main frame for 4pole mode The resulting pa d channels are shown in Table 4 1 Table 4 1 Paired Channels in pole...

Page 55: ...el on the card Although the four wire connection scheme minimizes problems caused by voltage drops there is one other potentially txublesome area associated with low r s tance measurements thermal EM...

Page 56: ...a detrimental effect on measurement accwa cy unless stepsare taken to avoid them the Model 7011 has been designed to keep relay EMF at a minimal lev el Thermal FMF effectscanbe virtually eliminated b...

Page 57: ...alent circuit for the current gain test The Model 224Current Sourceis used to source the basecurrent I The Model 730 Voltage Source supplies the collector emitter volt age V and the collector current...

Page 58: ...Model224 C menteowce A Test Configuration B Simplified Equivalent Circuit Figure 4 7 Configuration for current gain and common emitter test 4 l 0...

Page 59: ...em and also briefly out line a typical test that can be made with such a system Multiplexer and matrix card connections Figure 4 9 shows a typical sy stemusing Model 7012 and 7011cards together In thi...

Page 60: ...doping concentratiOn to minimize errors caused by sample loading the Mod d 196 should be used on the 3OOmVor 3V ranges Also resistance values should be 1MQ or less As shown in Figure 410 the Model 701...

Page 61: ...A Connections 6 Simplified Equivalent Circuit One measurement leg shown Figure 4 l 0 Resistiviv 2 3 COnfiguratiOn 4 l 3...

Page 62: ...Operation Figure 4 l 1 Measurement required for resistivity test 4 14...

Page 63: ...system Ideally the path isolation should be infinite but the ac tual resistance and distributed capadtance of cables and connectors results in less than infinite path isola tion values for these devic...

Page 64: ...igital circuits etc or it can result from impulse sources asin the caseof arcing in high voltage environments In either case the effect on the measurement can be considerable if enough of the unwanted...

Page 65: ...ntation in the test setup 4 5 5 Keeping connectors clean As is the casewith any high resistance device the in tegrity of connectors can be damaged if they are not handled properly If connector insulat...

Page 66: ...shooting Presents some troubleshooting tips for the Model 7011 induding relay replace ment precautions 5 2 Handling and cleaning precautions Because of the high impedance areas on the Model 7011 care...

Page 67: ...ipment the side edges Do not touch the con nectors and do not touch the board s lufaces or components on plugs and receptacles do not touch areas adjacent to the electrical contacts NOTE Failure of an...

Page 68: ...king measurements 3 Connect ail input terminals of Bank A together to form one common terminaI asshown in Figure 5 1 4 Set the Model 196 to the 3WR range and connect the four test leads to the OHMS an...

Page 69: ...i H L H I c ts L H L I i HLHL LHLHL LHLHiHL L Bank lnptlts Model 7011 Figure 5 l Path resistance test connections 5 4...

Page 70: ...to Bank A HI and LO as shown in Figure 5 2A 5 6 7 8 9 10 11 12 13 14 Install the Model 7011 in slot 1 CARD 1 of the Model 7001 Turn on the Model 7001 and program the unit to closechannel l l Bank A I...

Page 71: ...L J Model 7011 A Differential Bank inputs _ L J Model 7011 B Common Mode Bank outputs Figure 5 2 Differential offset current test connections 5 6...

Page 72: ...output Bank A using copper wires 7 8 9 10 Install the Model 7011in the Model 7001slot 1 and turn the Model 7001on Allow Models 7001 7011 and 182to warm up for two hours 11 Selectthe 3mV range on the M...

Page 73: ...the entire procedure 4 Connect the electrometer to the Model 7011 as shown in Figure 5 4 5 Install the Model 7011 in slot 1 CARD 1 of the Model 7001and turn the mainframe on 6 On the Model 617 select...

Page 74: ...nnel to ckannel isolation 24 Turn off the Model 7001and connect the Model 617 to the card as shown in Figure 5 5 25 Install the Model 7011in slot 1 of the Model 7001 and turn the mainframe on 26 l rog...

Page 75: ...Service Information Figure 5 5 Channel to channel isolation test connections 5 10...

Page 76: ...k B Input 8 Bank Band Input 7 1 18 17 Bank B Input 8 to Bank B Input 9 Bank B and Input 8 1 19 18 Bank B Input 9 to Bank B Input 10 Bank B and Input 9 1 20 19 Bank C Input 1to Bank C Input 2 Bank C an...

Page 77: ...curacy 3 On the Model 617 select the 2pA range and enable zero check and zero correct in that order Leave zero correct enabled for the entire procedure WARNING The following steps use high voltage 100...

Page 78: ...common mode isolation testing r Igxmrmd as slot 1 and charmeL Test Differential or com Channel number mon mode isolation closed 1 2 3 4 5 6 7 8 9 10 11 BankA Bank A Input 1 Bank A Input 2 Bank A Inpu...

Page 79: ...y designed to prevent or dissipate static build up Typically these devices will be received in anti static containers made of plastic or foam Keep these parts in their original containers until ready...

Page 80: ...ation the sequence described below is performed on power up 1 The IDDATA line pin 6of U105 is setfrom high to low while the IDCLK line pin 5 of U105 is held high This action initiates a start command...

Page 81: ...stat Bii I I I I I I I I l l I I I I I I I Stop Bit Figure 5 9 Stat and stop sequences I I I ID CLK IDDATA Data oulpui I I from mainframe or ROM IDDATA I I I x x I I Dataoutput I from mainframe I I or...

Page 82: ...its nominal steady state value of 3X 5 5 5 power on safeguard NOTE The power on safeguard circuit dis cussedbelow is actually located on the digital board in the Model 7001main frame A power on safeg...

Page 83: ...ng with live circuits Failure to do SDcould re suit in personal injury or death CAUTION Observe the following precautions when troubleshooting or repairing the switch card To avoid contamination which...

Page 84: ...c IDCLKpulseS ID DATA pulses STROBEpulse CLK pukes DATA pukes Low with relay energized high with relay de energized L ChNllent 5 All voltages referenced to digital ground GND pad Relay voltage Logic v...

Page 85: ...rts are listed al phabetically in order of circuit designation If the card is to be returned to Keithky Instnunents for repair perform the f0lkxvin 1 Complete the service form at the back of this man...

Page 86: ...d for 7011 Sand 7011 C NOTE The Model 7011and 7012use the same relay card only the connector cards are different Table2 Parts List Screw Terminated Connector Card for 7011 S 7011 160 Component Layout...

Page 87: ...TOR MALE RELAY ULTRA SMALL POLARIZED TF2E 5V CONNECTOR RIGHT ANGLE MALE TRANS Nl N PWR TIP31 TO 220AB TRANS N CHAN MOSPOW FET V11713 TO 92 RES 2 49K l l SW METAL FILM RES l l5K l l EW METALRLM RES 560...

Page 88: ...2 25917...

Page 89: ...TC17 100 25917 2...

Page 90: ...TC17 100 BOARD ASS Y ORIENT ARROW TOWARDS PIN 1 OF DEVICE E2 25917 CHG D U105 FROM IC 737 TO TC17 100 DELETED SO 72 KK 6 18 01...

Page 91: ...OO 105 Description CABLE CLAMl CAPTIVE SCREW FOR TOP CLAMP CONNECTOR JUMl ER FOR CS 339 Z CONNECTOR SHIM FOR P1002 1003 SHIELD STRIP P0LYuRETHAiwz FOR BOTTOM CLAMP TOP CLAMF COW 8 PIN CONN 6 PIN TE 11...

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Page 94: ...96 PIN 3 ROWS RLAY ULTRA SMALL POLARIZED TF2E 4 5V CONNECTOR FEMALE TRANS N CHAN MOSPOW FET V11713 TO 92 RES lM lo 1 2W COMPOSITION RES 39 5 1 4W COMPOSITION OR FILM RES 1O 5 1 4W COMl OSITION OR FIL...

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Page 97: ...rticular range or function bad specify 0 Batteries and fuses are OK 0 Checked all cables 0 Calibration only 0 Data required 0 Certificate of calibration required attach any additional sheets as necess...

Page 98: ...Keithley Instruments Inc lest Instrumentation Croup 28775 Aurora Road Cleveland Ohio 44139 Printed in the U S A...

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