Keithley 707B User Manual
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Keithley 707B User Manual

Keithley 707B User Manual

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Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com
Models 707B and 708B
Switching Matrix
User's Manual
707B-900-01 Rev. A / August 2010
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  • Page 1 Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com Models 707B and 708B Switching Matrix User’s Manual 707B-900-01 Rev. A / August 2010...
  • Page 2 All rights reserved. Any unauthorized reproduction, photocopy, or use the information herein, in whole or in part, without the prior written approval of Keithley Instruments, Inc. is strictly prohibited. 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 rated Measurement Category I and Measurement Category II, as described in the International Electrotechnical Commission (IEC) Standard IEC 60664. Most measurement, control, and data I/O signals are Measurement Category I and must not be directly connected to mains voltage or to voltage sources with high transient over-voltages.
  • 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

    Selecting and closing a channel from the front panel ............2-7 Exercise: Select and close slot 1, row C, column 7 crosspoint..........2-8 Crosspoint display (Model 707B only) ................. 2-9 Selecting and closing channels using the crosspoint display ..........2-10 Viewing the close or open status of a channel ..............
  • Page 7 Logical block diagram of test connections ................5-3 Example 1: Control with separate interfaces ............... 5-4 Set up communication....................... 5-4 Example program code for the Model 707B or 708B ..............5-5 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 Switching Matrix User's Manual Table of Contents Example program code for the Model 2400 ................6-5 Example program code for the Model 707B or 708B ..............6-6 Overview of running the test...................... 6-9 Example code to run the test..................... 6-9 Troubleshooting FAQs ....................

  • Page 10: Introduction

    707B or 708B with a Keithley Instruments Model 2400 SourceMeter instrument, including how to use digital I/O triggering to synchronize source and measure actions between the Model 707B or 708B and the Model 2400. The concepts in these examples can be applied when used using the...

  • 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....2-13 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 Switching Matrix User's Manual Model 707B front panel The front panel of the Model 707B is shown below. Figure 1: Model 707B front panel 707B SWITCHING MATRIX Channel columns Slot and...

  • 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: Front-Panel Keys

    CONFIG and then SCAN opens the Scan Attribute Menu. The top row of keys under the display allows you to open and close channels, work with scan lists, and load and run scripts. Figure 3: Models 707B and 708B top row of keys Key descriptions Description OPEN ALL Opens all closed channels.

  • Page 16: Display

    If this is not lit, the instrument is not connected through the LAN or there is a connection problem. If you are using the web interface, the LAN Status light blinks when you click ID. See the "LAN communication interface" topic in the Models 707B and 708B Reference Manual for more information.

  • Page 17: Channel Identification

    By default, the top line of the display shows the slot, row, and column of the selected channel. Channel identification The channels on the cards that you can use with the Model 707B or 708B are referred to by a channel specifier. The specifier is used to identify channels for use with close and open operations, scans, and channel patterns, using the front panel, web, or remote command interface.

  • Page 18: Selecting And Closing A Channel From The Front Panel

    Models 707B and 708B Switching Matrix User's Manual Section 2: Using the front-panel interface Channel identifiers The channels on the matrix cards are referred to by their slot, bank, row, and column numbers: • Slot number: The number of the slot in which the card is installed.

  • Page 19: Exercise: Select And Close Slot 1, Row C, Column 7 Crosspoint

    Section 2: Using the front-panel interface Models 707B and 708B Switching Matrix User's Manual CAUTION Hot switching can dry weld reed relays such that they will always be on. Hot switching is recommended only when external protection is provided. You can perform operations on a single channel from the front panel. To select a channel, you use the navigation wheel .

  • Page 20: Crosspoint Display (Model 707B Only)

    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 21: Selecting And Closing Channels Using The Crosspoint Display

    SLOT 1 SLOT 1 SLOT 2 SLOT 2 SLOT 3 SLOT 3 NOTE On the Model 707B, if you scroll past the last row of any slot, you will go to the next slot. 2-10 707B-900-01 Rev. A / August 2010...

  • Page 22: Viewing The Close Or Open Status Of A Channel

    Models 707B and 708B Switching Matrix User's Manual Section 2: Using the front-panel interface 4. After choosing the row, press the navigation wheel . A column of red lights is displayed. 5. Turn the navigation wheel to go to column 03. Note that scrolling through the columns will not scroll through slots as scrolling through rows does.

  • Page 23: Create A Channel Pattern

    6. Use the ENTER key to apply the selection. 7. Use the EXIT key to leave the menu. NOTE Refer to "Channel patterns" in the Models 707B and 708B Reference Manual for more details. Performing close and open operations on channel patterns WARNING Careless channel pattern operation could create an electric shock hazard that could result in severe injury or death.

  • Page 24: Set Up Row, Column, And Channel Labels

    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 25: Exercise: Create A Row Label For Row D Using The Front Panel

    Section 2: Using the front-panel interface Models 707B and 708B Switching 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 26: Using The Web Interface

    The instrument web page resides in the firmware of the instrument. Changes you make through the web interface are immediately made in the instrument. Many examples in this manual and in the Model 707B and 708B Reference Manual can be run through the TSB Embedded page of the instrument web interface.

  • Page 27: Web Interface Home Page

    Section 3: Using the web interface Models 707B and 708B Switching Matrix User's Manual 2. Open an Internet browser, such as Windows Internet Explorer (v6.0 or higher only). 3. In the Address box, enter the IP address of the instrument (to find the IP address, from the front panel of the instrument, select MENU >...

  • Page 28: Card Pages

    Models 707B and 708B Switching Matrix User's Manual Section 3: Using the web interface 3. Enter the password (the default is admin). Figure 12: Enter password 4. Click Login. NOTE The default password is admin. If the password has been changed, it is available from the front panel of the instrument.

  • Page 29: Open And Close Channels From The Card Pages

    Section 3: Using the web interface Models 707B and 708B Switching Matrix User's Manual Figure 13: 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 30 Models 707B and 708B Switching 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 31: Set Up Channel Patterns From The Web Interface

    Section 3: Using the web interface Models 707B and 708B Switching Matrix User's Manual 2. You must log into the instrument to work with the channels. See Log in to the instrument (on page 3-2). After logging in, you can access the channel controls.
  • Page 32 Models 707B and 708B Switching Matrix User's Manual Section 3: Using the web interface Exercise: Create channel pattern "TEST02" using the Snapshot feature To create a channel pattern "TEST02" from the web interface using the Snapshot feature: 1. From the left navigation, click slot 1.

  • Page 33: 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 34: 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 35: Stop The Scan

    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 36: 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 37 Section 3: Using the web interface Models 707B and 708B Switching Matrix User's Manual Figure 21: 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 38 Section 3: Using the web interface NOTE 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 39 6. To resend a command, click the drop-down arrow on the left side of the Console box. Figure 25: Model 707B or 708B web interface console More information about commands to control the instrument can be found in the Models 707B and 708B Reference Manual.

  • 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

    Section 4: Working with the Model 4200-SCS 12. When the Model 4200-SCS finds the Model 707B or 708B, a green check mark appears next to “Verifying Keithley 707A Switching Matrix.” If there is an error, a red X appears next to “Verifying Keithley 707A Switching matrix.”...

  • 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 Switching Matrix User's Manual Section 5: Working with the Series 2600A NOTE This figure 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 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 707B Or 708B

    ® ® environment, such as Microsoft Visual Studio or National Instruments Labview™. 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

    Section 5: Working with the Series 2600A Models 707B and 708B Switching Matrix User's Manual Example program code for the Model 2635 System SourceMeter Instrument Code Notes and comments reset() Reset the instrument. Clear all errors and reset status bits.

  • Page 50: Example 2: Using Tsp-Link To Configure Instruments

    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 51: 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 52: 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 53: Example Code To Run The Test

    Set arm count to the number of sweeps to perform each node[2].smua.trigger.arm.count = 1 time the sweep is initiated. Example code to run the test To run the test, send the following commands to the Model 707B or 708B. 5-10 707B-900-01 Rev. A / August 2010...
  • Page 54 Models 707B and 708B Switching Matrix User's Manual Section 5: Working with the Series 2600A Example program code to run the test Code Notes and comments node[2].smua.source.output = 1 Turn on the output of the Model 2635A. channel.exclusiveclose(matrixChannels[1]) Connect first diode.

  • Page 55: 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 56: Example Program Code

    Trigger line #3 is not used in the example. 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 57 Section 5: Working with the Series 2600A Models 707B and 708B Switching Matrix User's Manual Example program code for the Model 707B or 708B Code Notes and comments loadscript diodeTest Create a script "diodeTest" to contain test configuration and execution instructions.
  • Page 58 Models 707B and 708B Switching Matrix User's Manual Section 5: Working with the Series 2600A Configure sweep voltage measurements. node[2].smua.trigger.measure.v(node[2].smua.nvbuffe 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 59: Example Program Code To Run The Test

    Example 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 60: 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 61 Section 5: Working with the Series 2600A Models 707B and 708B Switching Matrix User's Manual Example program code for the Model 707B or 708B Code Notes and comments loadscript diodeTest Create a script "diodeTest" to contain test configuration and execution instructions.
  • Page 62 Models 707B and 708B Switching Matrix User's Manual Section 5: Working with the Series 2600A node[2].reset() Reset the instrument. Clear all errors and reset status bits. node[2].errorqueue.clear() Clear existing data from data buffer. node[2].smua.nvbuffer1.clear() node[2].smua.source.func = Set source function to current source.

  • Page 63: Example Program Code To Run The Test

    Example 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 64: Using Background Scans For Longer Scan Lists

    Models 707B and 708B Switching Matrix User's Manual Section 5: Working with the Series 2600A Using background scans for longer scan lists Example 4 illustrates use of the scanning and triggering model to create a foreground scan. While running a foreground scan, you must wait for the scan to complete or you must abort the scan before you can query the instrument state or any reading buffers.

  • Page 66: 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 67: Logical Block Diagram Of Test Connections

    Section 6: Working with the Series 2400 Models 707B and 708B Switching Matrix User's Manual NOTE 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 68: Example 1: Individual Commands For Switch-Measure

    Figure 32: Test system block diagram 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 NOTE TSB and TSB Embedded cannot be used to control the Model 2400 SourceMeter instrument.

  • Page 69: Example Program Code For The Model 707B Or 708B

    Number of steps in sweep = 11. :TRIG:COUN 11 Example program code for the Model 707B or 708B 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 70: 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 71 66 sets of readings generated for sweeps across all diodes. :TRAC:FEED SENS :TRAC:FEED:CONT NEXT Example program code for the Model 707B or 708B The following code loads a script on the 70xB that contains two functions that: • Set up the table of crosspoints to close •...

  • Page 72: Example Program Code For The Model 707B Or 708B

    Models 707B and 708B Switching Matrix User's Manual Section 6: Working with the Series 2400 Example program code for the Model 707B or 708B Code Notes and comments loadscript forScan This script creates two functions on the Model 707B or 708B to configure and run the test.
  • Page 73 Run the script to generate the functions. crossptTable = setup70xChanList() Call the function that sets up the Model 707B or 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 74: Overview Of Running The Test

    Section 6: Working with the Series 2400 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 76: Troubleshooting Faqs

    Need different line frequency or voltage I need to use 707B or 708B at a different line frequency or voltage. What do I need to do? The Model 707B or 708B only supports a line frequency of 50/60 Hz. The line frequency is automatically sensed and no user action is needed.
  • Page 77 Section 7: Troubleshooting FAQs Models 707B and 708B Switching Matrix User's Manual You can select one of two options when enabling Model 707A or 708A DDC compatibility mode: • 70xA-VERSION: This option most closely matches Model 707A or 708A operation. Use this version if you are transferring applications directly from a Model 707A or 708A with few changes.

  • Page 78: A" Model Software Does Not Run On "B" Models

    Section 7: Troubleshooting FAQs "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 79: Instrument's Internal Web Page Is Not Accessible

    Ensure that the instrument has a valid and unique IP address assigned. • To view the IP address of the Models 707B and 708B, press MENU. Select LAN > STATUS > IP-ADDRESS. If a valid IP address is displayed, the instrument configuration is correct. If 0.0.0.0 is displayed, the IP address is not valid.

  • Page 80: Error When I Try To Close A Channel

    Save the present state of the instrument How do I save the present state of the instrument? Use the Create Config Script option (or the command createconfigscript). See the Models 707B and 708B Reference Manual, "Save the present configuration." 707B-900-01 Rev. A / August 2010...

  • Page 81: Labview Driver For The Model 707B Or 708B

    Section 7: Troubleshooting FAQs Models 707B and 708B Switching Matrix User's Manual LabVIEW driver for the Model 707B or 708B Where do I find the LabVIEW driver for the Model 707B or 708B? 707B-900-01 Rev. A / August 2010...

  • Page 82: 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 84: Index

    • 2-4, 2-5, 2-9 interface • 2-1 4200 • 4-1 introduction • 2-1 keys • 2-3, 2-4 707B-708B Quick Start Guide • 1-2 Model 707B front panel • 2-2 Model 708B front panel • 2-2 applications • 1-1 hot switching • 1-1 CD_-ROM •...
  • Page 85 Index Models 707B and 708B Switching Matrix User's Manual navigation wheel • 2-3 POWER switch • 2-3 precautions • 1-1 safety precautions • 1-1 Test Script Builder • 1-2 Index-2 707B-900-01 Rev. A / August 2010...
  • Page 86 Warranty Keithley Instruments, Inc. warrants this product to be free from defects in material and workmanship for a period of one (1) year from date of shipment. Keithley Instruments, Inc. warrants the following items for 90 days from the date of shipment: probes, cables, software, rechargeable batteries, diskettes, and documentation.
  • Page 87 Specifications are subject to change without notice. All Keithley trademarks and trade names are the property of Keithley Instruments, Inc. All other trademarks and trade names are the property of their respective companies. G R E A T E R...

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