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Keithley 7012-S Скачать руководство пользователя страница 63

5

Service Information

5-1

WARNING

The information in this section is in-
tended only for quali

Þ

ed service per-

sonnel. Some of the procedures may
expose you to hazardous voltages
that could result in personal injury or
death. Do not attempt to perform
these procedures unless you are
quali

Þ

ed to do so.

5.1

Introduction

This section contains information necessary to service
the Model 7012 matrix card and is arranged as follows:

5.2

Handling and cleaning precautions:

Discusses

handling procedures and cleaning methods for
the matrix card.

5.3

Performance veri

Þ

cation:

Covers the procedures

necessary to determine if the card is operating
properly.

5.4

Special handling of static-sensitive devices:

Reviews precautions necessary when handling
static-sensitive devices.

5.5

Principles of operation:

Brie

ß

y discusses circuit

operation.

5.6

Troubleshooting:

Presents some troubleshooting

tips for the matrix card.

5.2

Handling and cleaning precautions

Because of the high impedance circuits on the Model
7012, care should be taken when handling or servicing
the card to prevent possible contamination, which
could degrade performance. The following precau-
tions should be taken when handling the matrix card.

Do not store or operate the card in an environment
where dust could settle on the circuit board. Use dry ni-
trogen gas to clean dust off the card if necessary.

Handle the card only by the side edges. Do not touch
any board surfaces, components, or connectors. Do not
touch areas adjacent to electrical contacts. When servic-
ing the card, wear clean cotton gloves.

If making solder repairs on the circuit board, use an
OA-based (organic activated)

ß

ux. Remove the

ß

ux

from these areas when the repair is complete. Use pure
water along with plenty of clean cotton swabs to re-
move the

ß

ux. Take care not to spread the

ß

ux to other

areas of the circuit board. Once the

ß

ux has been re-

moved, swab only the repaired area with methanol,
then blow dry the board with dry nitrogen gas.

After cleaning, the card should be placed in a 50

°

C low

humidity environment for several hours.

Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com

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Содержание 7012-S

Страница 1: ...ess underutilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing Rentals Demo...

Страница 2: ...anual Contains Operating and Servicing Information Models 7012 S and 7012 C 4 10 Matrix Cards 7012 901 01 Rev B 11 93 Artisan Scientific Quality Instrumentation Guaranteed 888 88 SOURCE www artisan sc...

Страница 3: ...INDIRECT 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 DAM...

Страница 4: ...s 7012 S and 7012 C Instruction Manual 1991 Keithley Instruments Inc All Rights Reserved Cleveland Ohio U S A Artisan Scientific Quality Instrumentation Guaranteed 888 88 SOURCE www artisan scientific...

Страница 5: ...urora Road Cleveland OH 44139 Technical Support 1 888 KEITHLEY Monday Friday 8 00 a m to 5 00 p m EST Fax 440 248 6168 Visit our website at http www keithley com Artisan Scientific Quality Instrumenta...

Страница 6: ...manual Each new Revi sion includes a revised copy of this print history page Many product updates and revisions do not require manual changes and conversely manual corrections may be done without acco...

Страница 7: ...hazardous voltage 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 prevented...

Страница 8: ...AUTION heading in a manual explains hazards that could damage the instrument Such damage may invalidate the warranty Instrumentation and accessories shall not be connected to humans Before performing...

Страница 9: ...ak any pin to chassis CONTACT LIFE Cold Switching 108 closures At Maximum Signal Levels 105 closures CHANNEL RESISTANCE per conductor 1 CONTACT POTENTIAL 7012 S 500 nV per contact pair Hi Lo 1 5 V per...

Страница 10: ...gle ended switching 2 3 2 3 2 Differential switching 2 4 2 3 3 Sensing 2 4 2 3 4 SMU connections 2 5 2 4 Matrix expansion 2 5 2 4 1 Two card switching systems 2 5 2 4 2 Mainframe matrix expansion 2 9...

Страница 11: ...Recommended equipment 5 2 5 3 3 Matrix card connections 5 3 5 3 4 Channel resistance tests 5 3 5 3 5 Offset current tests 5 4 5 3 6 Contact potential tests 5 6 5 3 7 Path isolation tests 5 7 5 3 8 Dif...

Страница 12: ...r pinout 3 8 Figure 3 8 Model 7011 KIT R with cable assembly 3 8 Figure 3 9 Single card system example multi pin connector card 3 10 Figure 3 10 Single card system example screw terminal connector car...

Страница 13: ...gure 5 2 Common mode offset current testing 5 5 Figure 5 3 Differential offset current testing 5 5 Figure 5 4 Contact potential testing 5 6 Figure 5 5 Path isolation testing guarded 5 8 Figure 5 6 Dif...

Страница 14: ...2 Table 5 2 Path isolation tests 5 8 Table 5 3 Differential and common mode isolation testing 5 11 Table 5 4 Recommended Troubleshooting Equipment 5 15 Table 5 5 Troubleshooting procedure 5 16 v vi Ar...

Страница 15: ...made via the 96 pin male DIN connector on the connector card Keithley offers a variety of optional accessories that can be used to make connections to the connector card see paragraph 1 9 The rest of...

Страница 16: ...in personal injury or death Always read the associated information very carefully before performing the indicated procedure The CAUTION heading used in this manual explains hazards that could damage t...

Страница 17: ...following accessories are available for use with the Model 7012 Model 7012 ST This screw terminal connector card is identical to the one provided with the Model 7012 S assembly An extra screw termina...

Страница 18: ...ure 2 1 The card is con gured as a 4 10 matrix Each of the 40 crosspoints is made up of a two pole switch By closing the appropriate crosspoint switch any matrix row can be connected to any col umn in...

Страница 19: ...pers isolates the card from the backplane and subsequently any card installed in the other slot For information on removing the jumpers refer to paragraph 3 3 1 NOTE The Model 7001 does not provide an...

Страница 20: ...ore effective connected to circuit common Chassis ground is accessible at the rear panel of the Model 7001 2 3 1 Single ended switching In the single ended switching con guration the source or measure...

Страница 21: ...he matrix card can be con g ured to use instruments that have sensing capability The main advantage of using sensing is to cancel the ef fects of matrix card path resistance 1 and the resis tance of e...

Страница 22: ...LO Output LO Output LO 236 237 238 Triax Cables 3 WARNING Hazardous voltages may be present on GUARD Make sure all cable shields are properly insulated before applying power 2 3 4 SMU connections Fig...

Страница 23: ...d by simply installing two as shipped Model 7012s in the Model 7001 mainframe By leaving the backplane jumpers installed the rows of the matrix card installed in slot 1 CARD 1 are automatically connec...

Страница 24: ...ane Card 1 Notes Backplane jumpers on both cards must be installed 11 20 7012 Card 2 4 x 20 Matrix Columns could have a Model 7012 matrix card installed in one slot and a Model 7011 multiplexer card i...

Страница 25: ...ix example 8 10 1 2 3 4 1 10 Columns 7012 Rows 7001 Analog Backplane Card 1 8 x 10 Matrix 7012 Card 2 1 2 3 4 Rows Jumpers Removed External Column Jumpers Artisan Scientific Quality Instrumentation Gu...

Страница 26: ...ne jumpers must be installed 2 Model 7011 bank to bank jumpers must be removed 1 10 7011 Card 2 Quad 1 x 10 Mux 1 10 1 10 1 10 Bank A Bank B Bank C Bank D Inputs An example of a partially implemented...

Страница 27: ...ws 5 6 7 or 8 Figure 2 12 cannot be connected to a column of Model 7012 1 with one ac cidental crosspoint closure Three speci c crosspoints must be closed in order to route the source signal to a colu...

Страница 28: ...embly in the Model 7001 mainframe 3 2 Handling precautions To maintain high impedance isolation care should be taken when handling the relay card to avoid contami nation from such foreign materials as...

Страница 29: ...PC board Using a pair of wire cutters cut one lead of each jumper Jumper installation Referring to Figure 3 1 for jumper locations perform the following steps to install backplane row jumpers 1 If ma...

Страница 30: ...mp B Using your thumb and fore nger press the re taining clips inward and with your other hand remove the top half of the clamp 4 Route wires under wire guide connector shim 5 Route the wires through...

Страница 31: ...tor card is provided by Figure 3 5 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 connections from the c...

Страница 32: ...inal Connector Desig 1a 32c Schematic Desig 1 96 Matrix Terminal Connector Desig 1a 32c Schematic Desig 1 96 Row 1 HI LO 8c 8b 72 40 Col 1 HI LO 32c 32b 96 64 Row 2 HI LO 6c 6b 70 38 Col 2 HI LO 30c 3...

Страница 33: ...shed using a Model 7011 MTC 2 cable and a Model 7011 MTR bulk head connector The two meter round cable is termi nated with a 96 pin female DIN connector at each end This cable mates directly to the mu...

Страница 34: ...led Wire instrumentation and DUT to bulkhead connector See Figures 3 5 and 3 7 for terminal identification B 7011 MTC 2 Cut in Half Wire directly to instrumentation and DUT Multi Pin Connector Card C...

Страница 35: ...de of connector 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 a b c Note See Figure 3 5 for terminal identification Figure 3 8 Model 7011 KIT R with cable asse...

Страница 36: ...When using a single card system make sure that the card remains electrically isolated from any other switching cards There are several ways to ensure iso lation for a single card in the Model 7001 mai...

Страница 37: ...ument Instrument Instrument Row 1 Row 2 Row 3 Row 4 DUT 1 2 3 4 5 6 7 8 9 10 DUT 1 2 3 4 5 6 7 8 9 10 1 2 3 4 Instruments Equivalent Circuit Columns Rows Fixture for Bulkhead Connector 7011 MTR Bulkhe...

Страница 38: ...Test Fixture 1 2 3 4 5 6 7 8 9 10 DUT 1 2 3 4 5 6 7 8 9 10 DUT 1 2 3 4 5 6 7 8 9 10 1 2 3 4 Instrument Instrument Instrument Instrument Instruments Equivalent Circuit Columns Rows Row 1 Row 2 Row 3 R...

Страница 39: ...3 4 5 6 7 8 9 10 DUT 1 2 3 4 5 6 7 8 9 10 DUT 1 2 3 4 5 6 7 8 9 10 1 2 3 4 Instruments Backplane Row Jumpers installed Column Column CARD 1 CARD 2 Equivalent Circuit Note Backplane row jumpers for bot...

Страница 40: ...ne DUT 1 2 3 4 5 6 7 8 9 10 DUT 1 2 3 4 5 6 7 8 9 10 DUT 1 2 3 4 5 6 7 8 9 10 DUT 1 2 3 4 5 6 7 8 9 10 1 2 3 4 Note Backplane row jumpers for both cards must be installed Instruments Backplane Row Jum...

Страница 41: ...tion and DUT Notice that the row connections for the third matrix card are made at the instruments Figure 3 14 shows connections for the screw terminal connector card Single conductor connections are...

Страница 42: ...Backplane Row Jumpers installed Column Column Column CARD 1 CARD 2 CARD 3 Equivalent Circuit External Row Jumpers Row DUT Test Fixture 1 2 3 4 5 6 7 8 9 10 DUT Test Fixture 1 2 3 4 5 6 7 8 9 10 Instru...

Страница 43: ...1 2 3 4 5 6 7 8 9 10 DUT 1 2 3 4 5 6 7 8 9 10 DUT 1 2 3 4 5 6 7 8 9 10 1 2 3 4 Trigger Link Cable Note Backplane row jumpers for both cards in 7001 1 must be installed 7001 1 7001 2 Instruments Backp...

Страница 44: ...to install the card in 3 Referring to Figure 3 15 for Model 7012 S installa tion or Figure 3 16 for Model 7012 C installation feed the matrix card assembly into the desired slot such that the edges of...

Страница 45: ...3 18 Figure 3 15 Model 7012 S card installation in Model 7001 Lock card Unlock card Ejector Arms 2 Lock card Unlock card Ejector Arms 2 Artisan Scientific Quality Instrumentation Guaranteed 888 88 SOU...

Страница 46: ...Model 7012 C card installation in Model 7001 1 Screw 2 Unlock card 2 1 Lock card Screw Ejector Arms 2 Screw Unlock card Ejector Arms 2 Screw Lock card Artisan Scientific Quality Instrumentation Guara...

Страница 47: ...l level speci cations of the card Maximum signal levels To prevent overheating or damage to the relays never exceed the following maximum signal levels DC signals 110V between any two pins termi nals...

Страница 48: ...ARD 1 CARD 2 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 Open Channel Closed Channel 7001 Display 4 3 1 Channel assignments The Model 7001 has a channel status display Figure 4 1 that provides the real...

Страница 49: ...1 4 3 1 1 4 1 2 4 1 3 4 1 4 4 1 1 5 1 2 5 1 3 5 1 4 5 1 1 6 1 2 6 1 3 6 1 4 6 1 1 7 1 2 7 1 3 7 1 4 7 1 1 8 1 2 8 1 3 8 1 4 8 1 1 9 1 2 9 1 3 9 1 4 9 1 1 10 1 2 10 1 3 10 1 4 10 1 2 3 4 5 6 7 8 9 10 B...

Страница 50: ...ng shows an ex ample of a scan list SCAN CHANNELS 2 1 1 2 1 3 2 2 1 2 2 5 When a scan is performed the channels speci ed in the scan list will be scanned in the order that they are pre sented in the s...

Страница 51: ...ine 25 to slow down the scan Also Line 5 is added to the beginning of the program to ensure that all chan nels are open before the scan is started 5 OUTPUT 707 open all 10 OUTPUT 707 RST 20 OUTPUT 707...

Страница 52: ...testing 1 2 3 4 H 1 3 4 5 6 7 8 9 10 2 R1 R2 R3 R4 R1 R2 R4 R3 Model 230 Model 196 Ohms Sense Volts Ohms Volts Ohms HI Output Common Measure V or 4 terminal Source V Ohms Sense HI Volts Ohms LO Ohms...

Страница 53: ...Volts Ohms HI Ohms Sense HI Ohms Sense LO Volts Ohms LO H L 1 H L 2 H L 3 H L 4 H L H L 1 2 R1 R2 R3 H L L H H L H L 196 Equivalent Circuit R4 H L 5 X X X Closed Crosspoints Rows Cols R4 H L Artisan...

Страница 54: ...and 3V ranges 1G 30V range 11M 300V range 10 1M For better input impedance re quirements the Keithley Model 617 Electrometer can be incorporated into the test system to measure volt age Another facto...

Страница 55: ...e V H 1 2 Model 7012 3 V 196 230 Equivalent Circuit 4 L Sense Output Sense Common R1 R2 R3 Thick Film H L H L H L H L H L H L H L R1 R2 R3 H H H H 1 2 3 4 Rows H L 5 R4 X X X X X Closed Crosspoints Co...

Страница 56: ...an be expand ed to test more by simply using additional Model 7012 matrix cards The Model 7001 will accommodate two matrix cards Daisy chaining six Model 7001s expands the system to 12 matrix cards al...

Страница 57: ...Law as follows Gain IC IB IE IC IB Common emitter characteristic curves A pro le of the transistor operating characteristics can be obtained by measuring the collector current over a speci ed voltage...

Страница 58: ...Source I Measure V Output HI Sense HI Sense LO Output LO SMU 2 A Measure I Source V V Measure V Source I H L H L H L 7012 Rows X X X X X Closed Crosspoint Equivalent Circuit A V SMU 2 SMU 1 IC I B VB...

Страница 59: ...ldom a con sideration however it can seriously degrade measurement accuracy when testing high impedance devices The voltage measured across such a device for example can be substantially attenuated by...

Страница 60: ...interference over a wide range of frequencies across the spectrum Such RFI can be particularly troublesome at low signal lev els but is can also affect measurements at high levels if the problem is of...

Страница 61: ...on resistance will be substantial ly reduced affecting high impedance measurement paths Oils and salts from the skin can contaminate connector insulators reducing their resistance Also contami nants p...

Страница 62: ...Operation 4 16 Artisan Scientific Quality Instrumentation Guaranteed 888 88 SOURCE www artisan scientific com...

Страница 63: ...ircuits on the Model 7012 care should be taken when handling or servicing the card to prevent possible contamination which could degrade performance The following precau tions should be taken when han...

Страница 64: ...Failure of any performance veri ca tion test may indicate that the matrix card is contaminated See paragraph 5 2 to clean the card 5 3 1 Environmental conditions All veri cation measurements should b...

Страница 65: ...est the high H terminal of row 1 through crosspoints 1 1 through 1 12 Rows Columns 5 3 3 Matrix card connections The following information summarizes methods that can be used to connect test instrumen...

Страница 66: ...om high H to low L differential and from high H and low L to chassis common mode for each pathway In general these tests are performed by simply measuring the leakage current with an electrometer In t...

Страница 67: ...H L H L H L H L H L H L H L H L H L Chassis ground is accessible at rear panel of the 7001 Figure 5 3 Differential offset current testing 1 2 3 4 1 3 4 5 6 7 8 9 10 2 Model 7012 MODEL 617 Measure Cur...

Страница 68: ...3 4 5 6 7 8 9 10 2 Model 7012 HI LO Note Setup shown is configured to test Row 1 crosspoints for contact potential Model 1484 Low Thermal Cable Unterminated Low Thermal short clean high purity copper...

Страница 69: ...correct enabled for the entire procedure 6 On the Model 617 select the 20pA range and re lease zero check 7 On the Model 617 press suppress to cancel offset current and then enable zero check 8 On the...

Страница 70: ...w 3 Col 7 to Row 4 Col 8 Row 3 and Row 4 1 3 7 and 1 4 8 8 Row 3 Col 8 to Row 4 Col 9 Row 3 and Row 4 1 3 8 and 1 4 9 9 Row 3 Col 9 to Row 4 Col 10 Row 3 and Row 4 1 3 9 and 1 4 10 Figure 5 5 Path iso...

Страница 71: ...On the Model 617 set the voltage source for 100V and select the 200nA current range Make sure the voltage source is still in standby 6 Place the Model 617 in the V I measurement func tion by pressing...

Страница 72: ...L H L H L H L H L H L H L H L H L Figure 5 7 Common mode isolation testing 1 2 3 4 1 3 4 5 6 7 8 9 10 2 Model 7012 HI Model 617 INPUT Model 7025 Unterminated Triax Cable Red Banana to Banana Cable Gro...

Страница 73: ...are static sensitive it is recommended that they all be treated as static sensitive 1 Such devices should be transported and handled only in containers specially designed to prevent or dissipate stat...

Страница 74: ...agram of the Model 7012 Key elements include the relay drivers and relays as well as the ROM which contains card ID and con guration information These various elements are discussed in the following p...

Страница 75: ...more data The ROM will then sequentially transmit data after each acknowledge signal it receives 4 Once all data is received the mainframe sends a stop command which is a low to high transition of th...

Страница 76: ...r ROM IDDATA Data output from mainframe or ROM IDDATA A power on safeguard circuit made up of U114 a D type ip op and associated components ensures that relays do not randomly energize on power up and...

Страница 77: ...001 mainframe Some of the procedures may expose you to hazardous voltages Observe stan dard safety precautions for dealing with live circuits Failure to do so could result in personal injury or death...

Страница 78: ...7 U105 pin 6 ID DATA pulses During power up only 8 U100 pin 7 STROBE pulse End of relay update sequence 9 U100 pin 2 CLK pulses During relay update sequence only 10 U100 pin 3 DATA pulses During relay...

Страница 79: ...esenta tive or the factory see inside front cover for addresses When ordering parts be sure to include the following information 1 Card model number 7012 S or 7012 C 2 Card serial number 3 Part descri...

Страница 80: ...el 7011 and 7012 use the same relay card only the connector cards are different Table 2 Parts List Screw Terminated Connector Card for 7012 S 7012 160 Component Layout Screw Terminated Con nector Card...

Страница 81: ...CERAMIC C 365 1 C 365 1 C 237 1 C 22 001 C 314 10 C 64 150P J1002 1003 CONNECTOR MALE CS 736 2 K100 139 RELAY ULTRA SMALL POLARIZED TF2E 5V RL 149 P2001 CONNECTOR RIGHT ANGLE MALE CS 775 1 Q100 Q101 T...

Страница 82: ...ARD 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 Artisan Scientific Quality Instrumentation Guaranteed 888 88 SOURCE www artisan scie...

Страница 83: ...2 25917...

Страница 84: ...TC17 100 25917 2...

Страница 85: ...1002 1003 SHIELD STRIP POLYURETHANE FOR BOTTOM CLAMP TOP CLAMP 2 56X7 16 PHILLIPS PAN HEAD FOR TERMINAL SHIELD BOARD 7011 304 2 FA 243 1 7011 309 7011 305 2001 345 1 7011 302 2 56X7 16PPH J1004 1006 J...

Страница 86: ......

Страница 87: ......

Страница 88: ...365 1 CR101 104 DIODE SILICON IN4148 DO 35 RF 28 E101 102 BEAD FERRITE CT 9 J1004 CONN 96 PIN 3 ROWS CS 514 K101 104 RELAY ULTRA SMALL POLARIZED TF2E 4 5V RL 162 P1002 1003 CONNECTOR FEMALE CS 748 3 Q...

Страница 89: ......

Страница 90: ......

Страница 91: ...libration only Certi cate of calibration required Data required attach any additional sheets as necessary Show a block diagram of your measurement system including all instruments connected whether po...

Страница 92: ...Keithley Instruments Inc 28775 Aurora Road Cleveland Ohio 44139 Printed in the U S A Artisan Scientific Quality Instrumentation Guaranteed 888 88 SOURCE www artisan scientific com...

Страница 93: ...uipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentat...

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