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Keithley 707B User Manual

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Models 707B and 708B Switching Matrix
User's Manual
707B-900-01 Rev. B / June 2013
P707B90001B*
707B-900-01
A Greater M easure of Confidence
A T ektr onix Company

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  • Page 1 Models 707B and 708B Switching Matrix User’s Manual 707B-900-01 Rev. B / June 2013 P707B90001B* 707B-900-01 A Greater M easure of Confidence A T ektr onix Company...
  • Page 2 Cleveland, Ohio, U.S.A. All rights reserved. Any unauthorized reproduction, photocopy, or use of the information herein, in whole or in part, without the prior written approval of Keithley Instruments, Inc. is strictly prohibited. , TSP-Link , and TSP-Net are trademarks of Keithley Instruments, Inc. All Keithley Instruments product names are trademarks or registered trademarks of Keithley Instruments, Inc.

  • Page 4: Safety Precautions

    Keithley Instruments products are designed for use with electrical signals that are measurement, control, and data I/O connections, with low transient overvoltages, and must not be directly connected to mains voltage or to voltage sources with high transient overvoltages.
  • Page 5 (note that selected parts should be purchased only through Keithley Instruments to maintain accuracy and functionality of the product). If you are unsure about the applicability of a replacement component, call a Keithley Instruments office for information.

  • Page 6: Table Of Contents

    Table of Contents Introduction ....................... 1-1 Introduction to this manual ....................1-1 Models 707B and 708B applications ..................1-1 CD-ROM contents ........................ 1-2 Using the front-panel interface ................2-1 Introduction .......................... 2-1 Model 707B front panel ......................2-2 Model 708B front panel ......................2-2 Keys and navigation wheel ....................
  • Page 7 Example 1: Control with separate interfaces ............... 5-4 Set up communication ....................... 5-4 Example program code for the Model 707B or 708B ..............5-4 Example program code for the Model 2635 ................5-5 Example code to run the test..................... 5-6 Example 2: Using TSP-Link to configure instruments ............
  • Page 8 Models 707B and 708B 199BSwitching Matrix User's Manual Table of Contents Troubleshooting FAQs ..................... 7-1 About this section ......................... 7-1 Need different line frequency or voltage ................7-1 Model 4200-SCS does not recognize switch matrix ............7-1 "A" model software does not run on "B" models ..............7-2 Matrix Ready and External Trigger lines ................

  • Page 10: Introduction

    Model 707B or 708B Semiconductor Switching Matrix. In addition, this manual provides the basics of the two simplest Models 707B and 708B interfaces, the front panel and the web interface, to familiarize you with the instrument. You can also familiarize yourself with the instrument by running the examples in this manual that are relevant to your intended use and to the equipment you are using.

  • Page 11: Cd-Rom Contents

    There are several CD-ROMs that are included with your instrument, which contain the following items: • The Test Script Builder Software and the Model 707B or 708B TSB add-in, which is a software ® tool you can use to create, modify, debug, and store test script processor (TSP ) test scripts •...

  • Page 12: Using The Front-Panel Interface

    Set up row, column, and channel labels ......... 2-11 Introduction Before starting this section, complete the tasks outlined in the Models 707B and 708B Quick Start Guide and install a switch card within the switching matrix. Once you have completed those tasks, read this section, which provides enough basic information about the Models 707B and 708B front-panel interfaces to work through the examples provided in this manual.

  • Page 13: Model 707B Front Panel

    Section 2: Using the front-panel interface Models 707B and 708B 199BSwitching Matrix User's Manual Model 707B front panel The front panel of the Model 707B is shown below. Figure 1: Model 707B front panel Model 708B front panel The front panel of the Model 708B is shown below.

  • Page 14: Keys And Navigation Wheel

    In most cases, pressing the navigation wheel performs the same action as pressing the ENTER key. On the Model 707B, you can use the navigation wheel to control which slot is displayed on the crosspoint display.
  • Page 15 Section 2: Using the front-panel interface Models 707B and 708B 199BSwitching Matrix User's Manual Key descriptions Description OPEN ALL Opens all closed channels. STEP If a scan list has been defined, press STEP to step through the list. Each press is one scan step. See Basic scan procedure.

  • Page 16: Display

    Section 2: Using the front-panel interface LAN status light The Models 707B and 708B has three status lights on the front panel . The 1588 status light indicates 1588 operation. If this light is off, the 1588 feature is disabled or improperly configured.

  • Page 17: Specifying A Channel

    Models 707B and 708B 199BSwitching Matrix User's Manual Specifying a channel The channels on the cards that you can use with the Model 707B or 708B are referred to by a channel specifier. You will use the specifier to identify channels for use with close and open operations, scans, and channel patterns.

  • Page 18: Exercise: Select And Close Slot 1, Row C, Column 7 Crosspoint

    Crosspoint display (Model 707B only) The crosspoint display on the front panel of the Model 707B displays information about the slots that contain cards and the open and closed state of the channels for one card slot at a time. If there are no cards in the instrument's slots, the crosspoint display shows "No card in unit."...

  • Page 19: Selecting And Closing Channels Using The Crosspoint Display

    From the front panel, you can change the display to show another card slot, choose a specific channel, and open and close channels. For the Model 707B, the crosspoint display shows you the status of the channels for one card at a time.

  • Page 20: Exercise: Select Crosspoint On Slot 2, Row C, Column 3

    Figure 8: One row selected On the Model 707B, if you scroll past the last row of any slot, you will go to the next slot. 4. After choosing the row, press the navigation wheel .

  • Page 21: Channel Patterns

    6. Press the ENTER key to apply the selection. 7. Press the EXIT key to leave the menu. Refer to "Channel patterns" in the Models 707B and 708B Reference Manual for more details. 2-10 707B-900-01 Rev. B / June 2013...

  • Page 22: Performing Close And Open Operations On Channel Patterns

    You can close and open channel patterns the same way you do for individual channels. When you request a close or open operation, the Model 707B or 708B verifies that the channels exist for a pattern, but does not verify that the switch path connection is correct. You must ensure the requested operation is safe for a channel pattern and that a good connection will result for your application with the channel pattern.

  • Page 23: Exercise: Create A Row Label For Row D Using The Front Panel

    Section 2: Using the front-panel interface Models 707B and 708B 199BSwitching Matrix User's Manual Exercise: Create a row label for row D using the front panel To create a row label for row D using the front panel: 1. If a pattern name is currently displayed on the bottom display, press CHAN to place the display in Channel view.

  • Page 24: Using The Web Interface

    Models 707B and 708B for a LAN connection, connecting the Models 707B and 708B to the LAN, and establishing a LAN connection to the instrument. Once the Models 707B and 708B is configured correctly and connected to the LAN, you can use the ®...

  • Page 25: Web Interface Home Page

    To manually set up the IP address to connect to the instrument web interface: 1. Connect the Models 707B and 708B to the LAN and confirm that the LAN light on the instrument is illuminated. The LAN light is located on the rear panel as part of the LAN RJ-45 connector.

  • Page 26: Log In To The Instrument

    Models 707B and 708B 199BSwitching Matrix User's Manual Section 3: Using the web interface Log in to the instrument The web interface has both interactive and read-only pages. These pages are always listed in the navigation panel on the left side of the web interface. You can review information on any of the pages without logging in, but to change information, you must log in.

  • Page 27: Open And Close Channels From The Card Pages

    Section 3: Using the web interface Models 707B and 708B 199BSwitching Matrix User's Manual Figure 11: Web interface Cards page Open and close channels from the card pages You can open and close channels from the card pages in several ways.
  • Page 28 Models 707B and 708B 199BSwitching Matrix User's Manual Section 3: Using the web interface To specify the type of close, select a Channel Action Type from the box in the upper right before closing a channel. The options are: •...

  • Page 29: Set Up Channel Patterns From The Web Interface

    Section 3: Using the web interface Models 707B and 708B 199BSwitching Matrix User's Manual 4. You must log into the instrument to work with the channels. See Log in to the instrument (on page 3-3). After logging in, you can access the channel controls.
  • Page 30 Models 707B and 708B 199BSwitching Matrix User's Manual Section 3: Using the web interface Exercise: Create channel pattern "Test1Pattern" using the Snapshot feature To create a channel pattern "Test1Pattern" from the web interface using the Snapshot feature: 1. From the left navigation, click Slot 1.

  • Page 31: Scan Builder Page

    Scanning and triggering allow you to synchronize actions across channels. You can set up a scan using the trigger model to precisely time and synchronize the Model 707B or 708B between channels and multiple instruments. You can also use triggers without the triggering model to set up a scan to meet the needs of a specific application that does not fit the triggering model.

  • Page 32: Create A Scan List

    Before setting up a scan list, make sure your channels and channel patterns are configured. See "Working with channels" in the Models 707B and 708B Reference Manual for detail. If you change the channel configurations or channel patterns after the scan list has been set up, you may not see expected results.

  • Page 33: Clear The Scan List From The Web Interface

    Other is not a mode and cannot be selected. It is only an indicator that the digital triggering is already set up for a different mode. See the Models 707B and 708B Reference Manual, "Using the web interface" section, and the "Advanced triggering" topic for other options.

  • Page 34: Tsb Embedded

    This exercise script assigns row and column labels for the card installed in slot 1. It then commands the Model 707B or 708B to close a crosspoint specified by the row and column labels. To create and run a script with TSB Embedded: 1.
  • Page 35 Section 3: Using the web interface Models 707B and 708B 199BSwitching Matrix User's Manual Figure 22: Select TSB Embedded 2. You must log in to the instrument to use TSB Embedded. After logging in, you can access the options on the TSB Embedded page.
  • Page 36 Commands and parameters for Models 707B and 708B are case-sensitive. It is important to type in the commands exactly as show to avoid any syntax and execution errors. 5. Click Save Script. The script is added to the User Scripts list.
  • Page 37 Section 3: Using the web interface Models 707B and 708B 199BSwitching Matrix User's Manual Script management options Existing scripts are listed in the User Scripts box on the left side of TSB Embedded. To run a script, click the name of the script and then click Run.
  • Page 38 Models 707B and 708B 199BSwitching Matrix User's Manual Section 3: Using the web interface More information about commands that can be used to control the instrument can be found in the Models 707B and 708B Reference Manual. 707B-900-01 Rev. B / June 2013...

  • Page 40: Working With The Model 4200-Scs

    Model 707B or 708B and associated switch cards Configure Model 707B or 708B for Model 4200-SCS To use the Model 707B or 708B with the Model 4200-SCS, first configure the Model 707B or 708B to use compatible Model 707A commands: 1.

  • Page 41: Add Model 707B Or 708B To Model 4200-Scs

    1. Connect the Model 707B or 708B to the GPIB controller on the Model 4200. 2. Ensure that the Model 707B or 708B has a GPIB address that is different than any other instrument connected to the Model 4200-SCS and is different than the controller's address.

  • Page 42: Next Steps

    See "Section 15: Multi-Frequency C-V measurements" in the Model 4200-SCS Reference Manual, which includes information on using the Model 4200-CVU card with a switch matrix. To customize the switch user library of the Model 4200-SCS, see the Models 707B and 708B Reference Manual, "Using Models 707A and 708A compatibility mode".

  • Page 44: Working With The Series 2600A

    • Does not use hardware triggering or the scanning and triggering model of the Model 707B or 708B. Example 2 shows you how to use TSP-Link to configure the Series 2600A and Model 707B or 708B instruments. This example: •...

  • Page 45: Equipment Required To Run The Examples

    • Does not use the scanning and triggering model of the Model 707B or 708B. Example 4 shows you how to use the scanning and triggering model of the Model 707B or 708B with the SourceMeter instrument. This example: •...

  • Page 46: Logical Block Diagram Of Test Connections

    Models 707B and 708B 199BSwitching Matrix User's Manual Section 5: Working with the Series 2600A Figure 28: Connections to switching module Logical block diagram of test connections The following figure shows the logical block diagram of the test connections. 707B-900-01 Rev. B / June 2013...

  • Page 47: Example 1: Control With Separate Interfaces

    To run this test, you create a table on the Model 707B or 708B that contains the crosspoints that are needed to connect the SMU to each diode under test, one at a time. The SMU then performs an I-V sweep on the diode.

  • Page 48: Example Program Code For The Model 2635

    Models 707B and 708B 199BSwitching Matrix User's Manual Section 5: Working with the Series 2600A Send the following commands to configure the Model 707B or 708B. Example program code for the Model 707B or 708B Code Notes and comments reset Reset the instrument to factory defaults.

  • Page 49: Example Code To Run The Test

    Model 2635 System SourceMeter instrument from the Model 707B or 708B. To run this test, you create a table on the Model 707B or 708B that contains the crosspoints that are needed to connect the SMU to each diode under test, one at a time. The SMU then performs an I-V sweep on the diode.

  • Page 50: Set Up Communication

    5. Press ENTER to save the TSP-Link node number. On the Model 707B or 708B, perform a TSP-Link reset to alert the Model 707B or 708B to the presence of the SMU: 1. Press MENU.

  • Page 51: Example Program Code

    2635 System SourceMeter have the TSP-Link node number appended to the beginning of the command (node[2]). In the following table, the Model 707B or 708B sends the commands in the shaded rows to the System SourceMeter instrument through the TSP-Link interface. Commands in unshaded rows are executed by the Model 707B or 708B.

  • Page 52: Example Code To Run The Test

    Models 707B and 708B 199BSwitching Matrix User's Manual Section 5: Working with the Series 2600A Example code to run the test To run the test, send the following commands to the Model 707B or 708B. Example program code to run the test Code Notes and comments Turn on the output of the Model 2635A.

  • Page 53: Example 3: Configure Using Tsp-Link And Interactive Triggers

    There are three digital lines in the TSP-Link cable that may be used for triggering. This example uses trigger lines 1 and 2. The Model 707B or 708B outputs a trigger signal on TSP-Link line 1 and waits for a trigger signal on TSP-Link line 2 before proceeding with the next set of crosspoint closures. The System SourceMeter instrument outputs a trigger signal on TSP-Link line 2 after completing its test and waits for a trigger signal on TSP-Link line #1 before testing.

  • Page 54: Example Program Code

    Section 5: Working with the Series 2600A Example program code In the following table, all commands are sent from the computer to the Model 707B or 708B. This example can be run using TSB Embedded. The Model 707B or 708B sends all commands in the shaded rows to the System SourceMeter instrument through the TSP-Link interface.
  • Page 55 Section 5: Working with the Series 2600A Models 707B and 708B 199BSwitching Matrix User's Manual Set source function to current source. node[2].smua.source.func = node[2].smua.OUTPUT_DCAMPS Set source current range to 10 mA. node[2].smua.source.rangei = 0.01 node[2].smua.measure.rangev = 6 Set voltage measurement range to 6 V Set integration rate.

  • Page 56: Program Code To Run The Test

    Program code to run the test The example program code stores the program in the instrument for later use. To run the program, send the following commands to the Model 707B or 708B. Example program code to run the test...

  • Page 57: Example 4: Using The Scanning And Triggering Model

    There are three digital lines in the TSP-Link cable that may be used for triggering. This example uses trigger lines 1 and 2. The Model 707B or 708B outputs a trigger signal on TSP-Link line 1 and waits for a trigger signal on TSP-Link line 2 before proceeding with the next set of crosspoint closures. The System SourceMeter instrument outputs a trigger signal on TSP-Link line 2 after completing its test and waits for a trigger signal on TSP-Link line #1 before testing.
  • Page 58 Models 707B and 708B 199BSwitching Matrix User's Manual Section 5: Working with the Series 2600A Add entries to the table. muxChannels[1] = "1001, 1202" muxChannels[2] = "1003, 1204" muxChannels[3] = "1005, 1206" muxChannels[4] = "1007, 1208" muxChannels[5] = "1009, 1210"...
  • Page 59 Section 5: Working with the Series 2600A Models 707B and 708B 199BSwitching Matrix User's Manual Configure sweep voltage measurements. node[2].smua.trigger.measure.v(node[2].smua.nvbuffer Enable voltage measurements during the sweep. node[2].smua.trigger.measure.action = node[2].smua.ENABLE node[2].smua.trigger.count = 11 Set trigger count to the number of steps in the sweep.

  • Page 60: Program Code To Run The Test

    Program code to run the test The example program code stores the program in the instrument for later use. To run the program, send the following commands to the Model 707B or 708B. Example program code to run the test...
  • Page 61 Section 5: Working with the Series 2600A Models 707B and 708B 199BSwitching Matrix User's Manual The following table shows a revised example of the runDiodeTest function in Example 4. This function sequences the function runDiodeTest() crosspoint closures and triggering. Call function to configure the configSwitch() Model 707B or 708B.

  • Page 62: Working With The Series 2400

    Model 707B or 708B and the SourceMeter instrument. The concepts in these examples can be applied when using the Model 707B or 708B with other SCPI-based instruments. TSB Embedded cannot be used to program the Model 2400 SourceMeter Instrument;...

  • Page 63: Logical Block Diagram Of Test Connections

    Section 6: Working with the Series 2400 Models 707B and 708B 199BSwitching Matrix User's Manual This drawing shows connections to the Model 7072 8x12 Switch Card. However, you can make similar connections to the other switch cards listed for this example.

  • Page 64: Example 1: Individual Commands For Switch-Measure

    Section 6: Working with the Series 2400 Example 1: Individual commands for switch-measure In this example, individual commands are sent to the Model 707B or 708B and SourceMeter Instrument to perform switch closure and measure actions. Example program code for the Model 2400 TSB and TSB Embedded cannot be used to control the Model 2400 SourceMeter instrument.

  • Page 65: Example 2: Digital I/O Triggering For Switch-Measure Synchronization

    Example 2: Digital I/O triggering for switch-measure synchronization In this example, you will configure both the Model 707B or 708B and the SourceMeter instrument to wait for and send digital trigger signals after each performs the requested switch closure or measure action.
  • Page 66 Models 707B and 708B 199BSwitching Matrix User's Manual Section 6: Working with the Series 2400 Send the following commands to configure the Model 2400 SourceMeter Instrument. Example program code for the Model 2400 SourceMeter Instrument Code Notes and comments *RST Reset the instrument.

  • Page 67: Example Program Code For The Model 707B Or 708B

    Code Notes and comments This script creates two functions on the Model loadscript forScan 707B or 708B to configure and run the test. This script should be stored in the Model 707B or 708B. Remember that loadscript and endscript commands are not necessary if this script is created in the instrument using TSB or TSB Embedded.
  • Page 68 Run the script to generate the functions. forScan() Call the function that sets up the Model 707B or crossptTable = setup70xChanList() 708B and store the output of the function in the variable crossptTable. Alternate method for creating a list of crosspoints The following code creates a list of crosspoints that can be used in a test.

  • Page 69: Overview Of Running The Test

    Models 707B and 708B 199BSwitching Matrix User's Manual Overview of running the test The Model 707B or 708B closes the crosspoints necessary to connect the SourceMeter to each diode under test one-at-a-time. The SourceMeter then performs an I-V sweep on each diode. This process continues until all six diodes are tested.

  • Page 70: Troubleshooting Faqs

    (FAQs)" section of the Models 707B and 708B Reference Manual. Need different line frequency or voltage I need to use a Model 707B or 708B at a different power line frequency or voltage. What do I need to do? The Model 707B or 708B only supports a line frequency of 50 or 60 Hz. The line frequency is automatically sensed and no user action is needed.

  • Page 71: A" Model Software Does Not Run On "B" Models

    The instrument has a unique GPIB address. "A" model software does not run on "B" models Software that I used with my Model 707A or 708A does not run on the Model 707B or 708B. What do I do? Verify that DDC compatibility mode is enabled.

  • Page 72: Matrix Ready And External Trigger Lines

    Yes, these signals appear on the digital I/O connector. For information on the digital I/O capabilities, refer to "Controlling digital I/O lines" in the Model 707B or 708B Reference Manual. If you wish to use a Model 707B or 708B in an existing Model 707A or 708A application, please refer to "Using Model 707A or 708A compatibility mode"...

  • Page 73: Error When I Try To Close A Channel

    If you are using the manual configuration method and a one-to-one connection with the computer, verify that the subnet mask agrees with the computer's settings. If the above suggestions do not work, see the Models 707B and 708B Reference Manual, "Communication interfaces."...

  • Page 74: Save The Present State Of The Instrument

    707B and 708B Reference Manual, "Save the present configuration."You can save the present state of the instrument using the front-panel menus or from a command interface. See the Models 707B and 708B Reference Manual, "User setups."You can save the present state of the instrument using the front-panel menus or from a command interface.

  • Page 76: Next Steps

    Instruments Models 707B and 708B Reference Manual, part number 707B-901-01. If you are migrating from a Keithley Model 707A or 708A, and wish to use the native commands for the Model 707B or 708B, please refer to the "Migrating from Models 707A and 708A" topic in the "Features and Functions"...

  • Page 78: Index

    I/O layer • 1-2 import script • 3-14 4 • 4-1 IP address • 7-4 IVI drivers • 1-2 707B-708B Quick Start Guide • 1-2 J2SE Runtime Environment • 1-2 Java plug-in • 3-1 abort script • 3-14 applications • 1-1 keys •...
  • Page 79 Index Models 707B and 708B 199BSwitching Matrix User's Manual LabVIEW driver • 7-5 line frequency • 7-1 Save present state • 7-5 voltage • 7-1 web page • 3-1, 3-2, 7-4 TSB Embedded • 3-11 script, create with • 3-11 web interface •...
  • Page 80 All other trademarks and trade names are the property of their respective companies. Keithley Instruments, Inc. Corporate Headquarters • 28775 Aurora Road • Cleveland, Ohio 44139 • 440-248-0400 • Fax: 440-248-6168 • 1-888-KEITHLEY • www.keithley.com A Greater M easure of Confidence...

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