Keithley 7019-C Instruction Manual
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Keithley 7019-C Instruction Manual

Keithley 7019-C Instruction Manual

Six-wire ohms matrix card
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Model 7019-C
Six-Wire Ohms Matrix Card
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
www.valuetronics.com

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  • Page 1 Model 7019-C Six-Wire Ohms Matrix Card 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 www.valuetronics.com...
  • Page 2 WARRANTY Keithley Instruments, Inc. warrants this product to be free from defects in material and workmanship for a period of 1 year from date of shipment. Keithley Instruments, Inc. warrants the following items for 90 days from the date of shipment: probes, cables, rechargeable batteries, diskettes, and documentation.
  • Page 3 Model 7019-C Six-Wire Ohms Matrix Card Instruction Manual ©1996, Keithley Instruments, Inc. All rights reserved. Cleveland, Ohio, U.S.A. Second Printing, April 2001 Document Number: 7019-901-01 Rev. B uetronics.com...
  • Page 4 Addendum A (Document Number 7019-901-02)........September 1996 Revision B (Document Number 7019-901-01) ........... April 2001 All Keithley product names are trademarks or registered trademarks of Keithley Instruments, Inc. Other brand and product names are trademarks or registered trademarks of their respective holders.

  • Page 5: Safety Precautions

    Keithley products are designed for use with electrical signals that For maximum safety, do not touch the product, test cables, or any are rated Installation Category I and Installation Category II, as de- other instruments while power is applied to the circuit under test.
  • Page 6 Chassis connections must only be used as shield connections for leads, and input jacks, must be purchased from Keithley Instru- measuring circuits, NOT as safety earth ground connections. ments. Standard fuses, with applicable national safety approvals, may be used if the rating and type are the same.
  • Page 7 7019-C Six-W ire O hms M atrix Card Specifications CONTACT POTENTIAL: <25µV per single contact MATRIX CONFIGURATION: Dual 3 rows by 6 columns, or pair. plus two utility pathways with two 2-channel multiplexer rows. Jumpers can be removed to isolate any row from the ACTUATION TIME: 500µs.
  • Page 8 Table of Contents General Information Introduction ................................Features .................................. Warranty information.............................. Manual addenda ..............................Safety symbols and terms ............................Specifications ................................Unpacking and inspection ............................1.7.1 Inspection for damage ............................. 1.7.2 Handling precautions ............................1.7.3 Shipping contents ............................1.7.4 Instruction manual............................1.7.5 Repacking for shipment ..........................

  • Page 9: Table Of Contents

    Typical connection techniques ........................3.3.4 Connector insulation and cleaning........................Typical connection schemes ........................... 3.4.1 Single-card system............................3.4.2 Multi-card system ............................Model 7019-C installation and removal ......................... 3.5.1 Matrix card installation........................... 3.5.2 Matrix card removal ............................Operation Introduction ................................Safety and signal considerations..........................
  • Page 10 Servicing Introduction ................................Handling and cleaning precautions ......................... Performance verification............................5.3.1 Environmental conditions ..........................5.3.2 Recommended verification equipment ......................5.3.3 Matrix card connections..........................5.3.4 Channel resistance tests ..........................5.3.5 Offset current tests ............................5.3.6 Path isolation tests............................5.3.7 Common-mode isolation tests......................... Special handling of static-sensitive devices......................
  • Page 11 uetronics.com...

  • Page 12: List Of Illustrations

    Model 7011-KIT-R assembly, shown with cables..................Figure 3-6 Single-card system example........................Figure 3-7 Two-card system connection example ......................Figure 3-8 Model 7019-C installation in Model 7001 ....................Figure 3-9 Model 7019-C installation into Model 7002....................Operation Figure 4-1 Channel status display..........................
  • Page 13 Servicing Figure 5-1 96-pin connector terminal identification ....................Figure 5-2 Connections for channel resistance tests ....................Figure 5-3 Connections for offset current tests ......................Figure 5-4 Connections for path isolation tests......................Figure 5-5 Connections for common-mode isolation tests................... Figure 5-6 Block diagram.............................

  • Page 14: List Of Tables

    List of Tables Matrix Switching Basics Table 2-1 SourceMeter matrix connections......................... Card Connections and Installation Table 3-1 Backplane jumper identification ......................... Table 3-2 Connector accessories ..........................Operation Table 4-1 Crosspoint channel assignments ......................... Table 4-2 SourceMeter and matrix card connections....................Servicing Table 5-1 Recommended verification equipment .......................
  • Page 15 viii uetronics.com...

  • Page 16: General Information

    The Model 7019-C is a single-pole, dual, 3 × 6 (three rows by six columns) matrix card. Some of the key features include: Manual addenda •...
  • Page 17 DIN connector that will mate directly to the connec- fore removing the card from the bag, observe the following tor on the Model 7019-C or to a standard 96-pin male DIN precautions on handling. bulkhead connector (see Model 7011-MTR). This connector uses solder cups for connections to external circuitry.
  • Page 18 2-2.The analog backplane allows the rows of a Model can be connected to the SENSE+, SENSE–, and GUARD 7019-C matrix card installed in one slot to be connected to SENSE rows through the appropriate crosspoints, while the the rows of another Model 7019-C card installed in another even-numbered column inputs (IN2 through IN12) can be slot of the mainframe.

  • Page 19: Figure 2-2 Mainframe Analog Backplane

    7019-C Analog Card 1 Card 2 Figure 2-3 shows how rows of the Model 7019-C are connect- Backplane ed to the backplane through the backplane jumpers. As noted, Bank A the G (guard) pathways are not used by the Model 7019-C.
  • Page 20 7001/7019-C system. Similarly, each Model 7002 DUTs Switch System mainframe can accommodate up to 10 cards, allowing up to 60 Model 7019-C cards in a six mainframe IN12 configuration. The limits on the number of cards in the Model...

  • Page 21: Figure 2-6 Isolated Switching System

    Matrix Switching Basics Mainframe Analog 7019-C 7019-C Card 1 Card 2 Backplane Columns Columns Rows Rows Jumpers Dual 3X6 Matrix Dual 3X6 Matrix Removed Figure 2-6 Isolated switching system Mainframe Analog 7019-C 7019-C Card 1 Card 2 Backplane Columns Columns...

  • Page 22: Card Connections And Installation

    This section contains information on making connections to tacts. Dirt build-up over a period of time is a possible the Model 7019-C and installing the card in a Model 7001 or source of contamination. To avoid this problem, operate 7002 switching mainframe.

  • Page 23: Connector Terminal Identification

    2. Physically remove a cut jumper by unsoldering it from Backplane jumper identification the PC board. Backplane Model 7019-C Mainframe 3. Install a new #22 AWG jumper wire (Keithley P/N jumper backplane row J-15), and solder it to the PC board. W101 FORCE+ Bank A HI 4.

  • Page 24: Figure 3-2 Model 7019-C Connector Terminal Identification

    Note: Short pins 1a to 1b on the mating connector (pins 1 and 33 on schematic) to allow the output relays on the connector card to close. 2c FORCE+ 3c FORCE- 6c Guard 4c SENSE+ 5c SENSE- GUARD SENSE IN10 IN11 IN12 IN14 IN13 IN16 IN15 Figure 3-2 Model 7019-C connector terminal identification uetronics.com...

  • Page 25: Typical Connection Techniques

    These relays are normally open to prevent any hazardous voltages (via the mainframe back- plane) from appearing on the pins of the Model 7019-C male Table 3-2 DIN connector. The bank connection relays will close only...
  • Page 26 Card Connections and Installation Wire SourceMeter 7019-C and DUT to bulkhead connector (See Figures 3-5 Connector and 3-7 for terminal Card identification) 7011-MTC-2 cable assembly 7011-MTR bulkhead connector 24 conductors used 7019-C Wire directly to SourceMeter Connector and DUT Card...

  • Page 27: Connector Insulation And Cleaning

    Model 7011-MTC-2 round cable assembly. This cable mates directly to both the external bulkhead connector Figure 3-5 and the Model 7019-C matrix card assembly. Notice that the Model 7011-KIT-R assembly, shown with cables bulkhead connector is shown mounted to a fixture to help keep the cabling stable during the test.

  • Page 28: Multi-Card System

    Figure 3-7 shows how external connections can be made for ensure isolation for a single card in the Model 7001/7002 each Model 7019-C card. In this example, a single Model mainframe: 7011-MTC-2 round cable assembly is cut in half to provide •...

  • Page 29: Model 7019-C Installation And Removal

    Two-card system connection example Model 7019-C installation and removal 3.5.1 Matrix card installation Perform the following steps to install the Model 7019-C ma- The following paragraphs explain how to install and remove trix card assembly in the Model 7001/7002 mainframe: the Model 7019-C matrix card assembly from the Model 7001/7002 mainframe.

  • Page 30: Matrix Card Removal

    Ejector Arms the slot in which you wish to install the card. (locked position) 3. Referring to Figure 3-8 for Model 7019-C installation in the Model 7001 or Figure 3-9 for Model 7019-C instal- WARNING: INTERCONNECTION, INSTALLATION AND REMOVAL OF CARDS BY QUALIFIED SERVICE PERSONNEL ONLY.
  • Page 31 Card Connections and Installation 3-10 uetronics.com...

  • Page 32: Operation

    • Make sure all connectors are fully Mainframe control of matrix card mated before applying power. The following information pertains to the Model 7019-C ma- • All connections including external trix card. It assumes you are familiar with the operation of connections must be fully insulated or the Model 7001/7002 mainframe.

  • Page 33: Channel Assignments

    Controlling crosspoints CHANNEL 2!33 = Slot 2, Channel 33 (IN5, GUARD SENSE) Each Model 7019-C matrix card crosspoint is accessed by using a specific CHANNEL number (1-40) that identifies a unique crosspoint. The CHANNEL assignments for the ma- trix card are summarized in Figure 4-2 and are listed in detail in Table 4-1.

  • Page 34: Front Panel Control

    CLOSE. For channel number Model 7019-C crosspoint* example, to close the IN4, FORCE- crosspoint (channel 8) of a Model 7019-C card installed in slot 2, key in the following IN2, FORCE+ channel list, and press CLOSE: IN4, FORCE+...

  • Page 35: Magnetic Fields

    Operation 4.4.1 Path isolation Even when the conductor is stationary, magnetically- induced signals may still be a problem. Fields can be pro- Path isolation is the equivalent impedance between any two duced by various signals such as the AC power line voltage. test paths in a measurement system.

  • Page 36: Six-Wire Ohms Resistance Testing Applications

    Figure 4-4 Ground loops The Model 7019-C is designed specifically for use with the six-wire ohms function of the series 2400 SourceMeters. The Figure 4-5 shows how to connect several instruments together following information provides an overview of using the to eliminate this type of ground loop problem.

  • Page 37: Typical Resistor Network Tests

    4-wire measuring instrument such as the se- four-wire measurement technique will yield the resistance of the Thevenin equivalent circuit rather than the resistance ries 2400 is required. The Model 7019-C provides of each element. convenient switching of these connections.

  • Page 38: Six-Wire Ohms Test Switching Connections

    Figure 4-8 shows the basic connections, using a Model 2400 The basic procedure for making resistor network measurements SourceMeter and the Model 7019-C, to make six-wire ohms using the Model 2400 SourceMeter and the Model 7019-C for measurements on resistor networks. six-wire ohms measurements on resistor networks is: SourceMeter and matrix card connections 1.

  • Page 39: Figure 4-8 Six-Wire Ohms Test Connections

    Operation 7001 analog 7019 7019 Card 1 backplane Card 2 connection Input/Output HI Input/Output LO 2400 Guard SourceMeter Sense 4 Wire HI Sense 4 Wire LO Guard Sense = Closed Crosspoints R1 R2 R1 R2 R1 R2 R1 R2 R1 R2 R1 R2 8 pin dual terminator...

  • Page 40: Split Kelvin Test Connections

    Figure 4-10 shows the basic connections using a Model 2400 3. Program the switching mainframe to close the necessary SourceMeter and the Model 7019-C to make the split Kelvin Model 7019-C crosspoints to test the desired network resistance measurement previously described.
  • Page 41 Operation 4-10 uetronics.com...

  • Page 42: Servicing

    Handling and cleaning precautions offset current, and isolation. With the Model 7019-C backplane jumpers installed, the Because of the high-impedance circuits on the Model 7019-C, performance verification procedures must be performed with care should be taken when handling or servicing the card to...

  • Page 43: Environmental Conditions

    See paragraph 5.2 for information on clean- DIN connector and then mating it to the connector on the ing the card. Model 7019-C. Figure 5-1 shows connector terminal iden- tification. The connector in the Model 7011-KIT-R connec- 5.3.1 Environmental conditions tion kit (see Table 3-2) can be used for this purpose.
  • Page 44 Servicing 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 View from pin side of connector Connector Schematic designation designation...

  • Page 45: Channel Resistance Tests

    Channel 1). Verify that the resistance of this channel is 1. Turn off the Model 7001/7002. <1Ω . 2. Install the Model 7019-C in slot 1 (CARD 1) of the 10. Open Channel 1!1. Model 7001/7002. 11. Repeat steps 9 and 10 for channels 2 through 6 (Channel 3.

  • Page 46: Offset Current Tests

    1. Turn off the Model 7001/7002. • Verify that the offset current for each channel is 2. Install the Model 7019-C in Slot 1 of the Model <100pA. 7001/7002. IN1 IN2 IN3 IN4 IN5 IN6 IN7 IN8 IN9 IN10 IN11 IN12 IN13 IN14 IN15 IN16...

  • Page 47: Path Isolation Tests

    1. Turn off the Model 7001/7002. • Verify that the path isolation resistance in each case 2. Install the Model 7019-C in slot 1 of the Model is >1GΩ . 7001/7002. IN1 IN2 IN3 IN4 IN5 IN6 IN7 IN8 IN9 IN10 IN11 IN12 IN13 IN14 IN15 IN16...

  • Page 48: Common-Mode Isolation Tests

    1. Turn off the Model 7001/7002. FORCE+, FORCE– 1, 8 1!1, 1!8 2. Install the Model 7019-C in slot 1 of the Model 7001/7002. 2, 9 1!2, 1!9 3, 10 1!3, 1!10 3. Connect the Model 6517 voltage source HI terminal to...

  • Page 49: Special Handling Of Static-Sensitive Devices

    The following paragraphs discuss the basic operating princi- • Connect the electrometer voltage source HI terminal ples for the Model 7019-C and can be used when trouble- to the indicated row. shooting the matrix card. The schematic drawing of the •...

  • Page 50: Troubleshooting

    Table 5-6 summarizes recommended equipment for trouble- 1. Disconnect the connector card from the relay card. shooting the Model 7019-C. 2. Remove the Model 7001 cover. 3. Install the relay card in the CARD 1 slot location.
  • Page 51 Servicing CAUTION • Use care when removing relays from Observe the following precautions when the PC board to avoid pulling traces troubleshooting or repairing the switch away from the circuit board. Before card: attempting to remove a relay, use an •...

  • Page 52: Replaceable Parts

    Replaceable Parts Introduction Factory service This section contains replacement parts information, sche- If the card is to be returned to Keithley Instruments for repair, matic diagrams, and component layout drawings for the perform the following: Model 7019-C. • Call the Repair Department at 1-800-552-1115 for a Return Material Authorization (RMA) number.
  • Page 53 Replaceable Parts Table 6-1 Relay board parts list Circuit designation Description Keithley part no. SHIELD 7011-305C C101-106 CAP, .1UF,20%,50V,CERAMIC C-365-.1 C107-109 CAP,150PF,10%,1000V,CERAMIC C-64-150P C110, 111 CAP, 10UF,-20+100%,25V,ALUM ELEC C-314-10 J1002,1003 CONN, 48-PIN, 3-ROWS CS-736-2 K101-140 RELAY (SPST),COTO 9000-0149 RL-131 P2001...
  • Page 57 25917 www.valuetronics.com...
  • Page 58 TC17-100 25917 www.valuetronics.com...
  • Page 59 CHG’D U105 FROM IC-737 TO TC17-100. 25917 6/18/01 DELETED SO-72. TC17-100 BOARD ASS’Y. ORIENT ARROW TOWARDS PIN 1 OF DEVICE.
  • Page 60 6 - W I R E - O H M C O N N E C T O R B O A R D D R N APPR. DIM. TOL. UNLESS OTHERWISE SPECIFIED K E K KEITHLEY INSTRUMENTS INC. XX=+.01 ANG.=+1 DO NOT SCALE THIS DRAWING 7 0 1 9 - 1 7 0 CLEVELAND, OHIO 44139 XXX=+.005...
  • Page 61 www.valuetronics.com...
  • Page 62 Connector insulation and cleaning Maximizing relay life Specifications Connector terminal identification Maximum signal levels Split Kelvin measurement technique Measurement considerations Split Kelvin test connections Model 7019-C installation and removal Multi-card system Environmental conditions Troubleshooting Troubleshooting access Offset current tests Troubleshooting equipment Operation...
  • Page 63 uetronics.com...
  • Page 64 Service Form Model No. Serial No. Date Name and Telephone No. Company List all control settings, describe problem and check boxes that apply to problem. Intermittent Analog output follows display Particular range or function bad; specify IEEE failure Obvious problem on power-up Batteries and fuses are OK Front panel operational All ranges or functions are bad...
  • Page 65 uetronics.com...
  • Page 66 uetronics.com...
  • Page 67 Kriesbachstrasse 4 • 8600 Dübendorf • 01-821 94 44 • Fax: 01-820 30 81 SWITZERLAND: Keithley Instruments SA TAIWAN: Keithley Instruments Taiwan 1FL., 85 Po Ai Street • Hsinchu, Taiwan, R.O.C. • 886-3-572-9077• Fax: 886-3-572-9031 © Copyright 2000 Keithley Instruments, Inc. No. 2193 Printed in the U.S.A. 2/2000 www.valuetronics.com...

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