Tektronix Keithley 2601B-PULSE User Manual
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Tektronix Keithley 2601B-PULSE User Manual

System sourcemeter instrument
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Model 2601B-PULSE
System SourceMeter Instrument
User's Manual
2601B-PULSE-900-01 Rev. A August 2021
*P2601B-PULSE-900-01A*
2601B-PULSE-900-01A

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  • Page 1 tek.com/keithley Model 2601B-PULSE System SourceMeter Instrument User’s Manual 2601B-PULSE-900-01 Rev. A August 2021 *P2601B-PULSE-900-01A* 2601B-PULSE-900-01A...
  • Page 2 Model 2601B-PULSE ® System SourceMeter Instrument User's Manual...
  • Page 3 © 2021, Keithley Instruments, LLC 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, LLC, is strictly prohibited. These are the original instructions in English. and TSP-Link are trademarks of Keithley Instruments, LLC.
  • Page 4 Safety precautions The following safety precautions should be observed before using this product and any associated instrumentation. Although some instruments and accessories would normally be used with nonhazardous voltages, there are situations where hazardous conditions may be present. This product is intended for use by personnel who recognize shock hazards and are familiar with the safety precautions required to avoid possible injury.
  • Page 5 For safety, instruments and accessories must be used in accordance with the operating instructions. If the instruments or accessories are used in a manner not specified in the operating instructions, the protection provided by the equipment may be impaired. Do not exceed the maximum signal levels of the instruments and accessories. Maximum signal levels are defined in the specifications and operating information and shown on the instrument panels, test fixture panels, and switching cards.

  • Page 6: Table Of Contents

    Table of contents Introduction ......................1-1 Welcome ..........................1-1 Extended warranty ....................... 1-1 Contact information ......................1-1 Customer documentation ..................... 1-2 Product software and drivers ....................1-2 Power and environmental ratings ..................1-3 Installation ........................ 2-1 Introduction .......................... 2-1 2601B-PULSE weights and dimensions ................2-1 Preparing the instrument for rack mounting ................
  • Page 7 Table of contents Model 2601B-PULSE System SourceMeter® Instrument User's Manual Displayed error and status messages ................3-14 Display operations ......................3-15 Display mode .......................... 3-15 Display functions and attributes ....................3-16 Display features ........................3-17 Display messages ........................3-18 Input prompting ........................3-22 Indicators..........................
  • Page 8 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Table of contents TSP commands used with the pulser ..................4-27 Settings ignored when the pulser is enabled ................4-27 Settings ignored when the pulser is disabled ................4-28 Examples ..........................4-28 Using the trigger model ...................... 4-32 Trigger model sections ......................

  • Page 9: Introduction

    If you have any questions after you review the information in this documentation, please contact your local Keithley Instruments office, sales partner, or distributor. You can also call the Tektronix corporate headquarters (toll-free inside the U.S. and Canada only) at 1-800-833-9200. For worldwide...

  • Page 10: Customer Documentation

    Section 1: Introduction Model 2601B-PULSE System SourceMeter® Instrument User's Manual Customer documentation The documentation for the 2601B-PULSE includes a Quick Start Guide, User's Manual (this document), and Reference Manual. The 2601B-PULSE Quick Start Guide is provided as a hard copy with the instrument.

  • Page 11: Power And Environmental Ratings

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 1: Introduction Power and environmental ratings The 2601B-PULSE power and environmental ratings and connections are listed in the following tables. Category Specification Power supply 100 V ac to 240 V ac, 50 Hz or 60 Hz (autosensing). 240 VA maximum Input and output connections Front panel (on page 3-1) and...

  • Page 12: Installation

    Section 2 Installation In this section: Introduction ................2-1 2601B-PULSE weights and dimensions ........2-1 Installing the 2601B-P-INT ............2-6 Cooling vents ................2-8 Turning the instrument on and off ..........2-9 Placing a 2601B-PULSE in standby ........2-11 Warmup period ............... 2-11 Line frequency configuration ..........
  • Page 13 Section 2: Installation Model 2601B-PULSE System SourceMeter® Instrument User's Manual Figure 1: Mounting screw locations and dimensions The following figures show the dimensions when the handle is installed. Figure 2: 2601B-PULSE dimensions front and rear with handle 2601B-PULSE-900-01 Rev. A August 2021...
  • Page 14 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 2: Installation The following figures show the dimensions when the handle has been removed. Figure 3: 2601B-PULSE front and rear panel dimensions with handle removed 2601B-PULSE-900-01 Rev. A August 2021...
  • Page 15 Section 2: Installation Model 2601B-PULSE System SourceMeter® Instrument User's Manual Figure 4: 2601B-PULSE height and length Figure 5: 2601B-PULSE with 2601B-P-INT length 2601B-PULSE-900-01 Rev. A August 2021...

  • Page 16: Preparing The Instrument For Rack Mounting

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 2: Installation Preparing the instrument for rack mounting To remove the handle, mounting ears, and rear feet: 1. Gently pull the handle (1) away from the sides of the instrument case and swing it up or down until the orientation arrows on the handles line up with the orientation arrows on the two mounting ears, as shown in the following figure.

  • Page 17: 2601B-P-Int Dimensions

    Section 2: Installation Model 2601B-PULSE System SourceMeter® Instrument User's Manual 2601B-P-INT dimensions The following figure show the dimensions of the 2601B-P-INT Interlock and Cable Connector Box. The 2601B-P-INT weighs 0.5 kg (1 lb). Figure 9: 2601B-P-INT dimensions Installing the 2601B-P-INT The 2601B-PULSE is shipped with the 2601B-P-INT Rear Panel Interlock and Cable Connector Box accessory.
  • Page 18 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 2: Installation To install the 2601B-P-INT: 1. Remove power connections from the 2601B-PULSE. 2. On the rear panel of the 2601B-PULSE, remove the screws to the left of the CHANNEL A: DC/PULSE terminal strip and to the right of the CHANNEL A: DC terminal strip. Save the screws for operation with the 2601B-P-INT uninstalled.

  • Page 19: Cooling Vents

    Section 2: Installation Model 2601B-PULSE System SourceMeter® Instrument User's Manual 6. Use the screws provided with the 2601B-P-INT to secure it to the rear panel of the 2601B-PULSE. Figure 12: Installation of the 2601B-P-INT Replacement jumpers are available from Keystone Electronics Corp., part number 1430-1, Uninsulated Shorting Pin.

  • Page 20: Turning The Instrument On And Off

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 2: Installation To prevent damaging heat build-up and ensure specified performance, use the following guidelines. The rear exhaust vent and either the top or both side intake vents must be unobstructed to properly dissipate heat.
  • Page 21 Section 2: Installation Model 2601B-PULSE System SourceMeter® Instrument User's Manual To turn a 2601B-PULSE on and off: 1. Before plugging in the power cord, make sure that the front-panel POWER switch is in the off (O) position. 2. Connect the female end of the supplied power cord to the ac receptacle on the rear panel. 3.

  • Page 22: Placing A 2601B-Pulse In Standby

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 2: Installation Placing a 2601B-PULSE in standby Hazardous voltages may be present on all output and guard terminals. To prevent electrical shock that could cause injury or death, never make or break connections to the 2601B-PULSE while the instrument is powered on.

  • Page 23: Remote Communications Interfaces

    Section 2: Installation Model 2601B-PULSE System SourceMeter® Instrument User's Manual Remote communications interfaces You can choose from one of several communication interfaces to send commands to and receive responses from the 2601B-PULSE. You can control the 2601B-PULSE from only one communications interface at a time. The first interface on which the instrument receives a message takes control of the instrument.

  • Page 24: Output Queue

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 2: Installation Figure 13: 2601B-PULSE IEEE-488, LAN, USB, and RS-232 connections 1 IEEE-488 connection 2 LAN connection 3 USB connection 4 RS-232 connection Output queue Response messages, such as those generated from print commands, are placed in the output queue. All remote command interfaces share the same output queue.
  • Page 25 Section 2: Installation Model 2601B-PULSE System SourceMeter® Instrument User's Manual Communicate with the instrument When using Virtual Instrument Software Architecture (VISA) to communicate with the USB device, you need to use a VISA communication driver. VISA requires a resource string in the following format to connect to the correct USB instrument: USB[board]::manufacturer ID::model code::serial number[::USB interface number][::INSTR]...

  • Page 26: Lan Communications

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 2: Installation Connecting multiple USB instruments to the computer The most convenient way to connect USB instrumentation to the computer is to plug a USB cable directly from the instrument to the computer. If you have more than one USB instrument or have other USB devices, such as printers, keyboards, and mice, you might not have enough USB connectors on the computer.
  • Page 27 Section 2: Installation Model 2601B-PULSE System SourceMeter® Instrument User's Manual The following figure shows the location of the LAN port on the rear panel of the instrument. Connect the LAN cable between this connection and the LAN port on the computer. Figure 15: 2601B-PULSE ethernet connection 1 2601B-PULSE ethernet port (LAN) 2 Straight-through LAN cable or crossover LAN cable...
  • Page 28 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 2: Installation The figure below shows a category 5e RJ-35 crossover cable (1) between the instrument and the computer. Figure 16: One-to-one connection with a crossover cable The 2601B-PULSE supports Auto-MDIX and can use either normal LAN CAT-5 cables (patch) or crossover cables.
  • Page 29 Section 2: Installation Model 2601B-PULSE System SourceMeter® Instrument User's Manual Two network card connection If you need to connect independent corporate and instrumentation networks, two network interface cards are required in the computer controller. Though the two networks are independent, stations on the corporate network can access the instruments and the instruments can access the corporate network using the same computer.
  • Page 30 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 2: Installation Figure 19: Instrumentation connection to enterprise routers or servers 1 Enterprise-wide or internet (routers or servers) 2 Limited by network size Set up LAN communications on the instrument The following topics describe how to check the existing LAN communications settings and set up manual or automatic LAN communications.
  • Page 31 Section 2: Installation Model 2601B-PULSE System SourceMeter® Instrument User's Manual Set up automatic LAN configuration If you are connecting to a LAN that has a DHCP server or if you have a direct connection between the instrument and a host computer, you can use automatic IP address selection. If you select Auto, the instrument attempts to get an IP address from a DHCP server.
  • Page 32 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 2: Installation 7. Press the ENTER key to confirm the changes. 8. Press the EXIT (LOCAL) key twice to return to the LAN CONFIG menu. 9. Select CONFIG > GATEWAY. 10. Turn the navigation wheel to select and enter a valid gateway address for the instrument. 11.
  • Page 33 Section 2: Installation Model 2601B-PULSE System SourceMeter® Instrument User's Manual To enable or disable DNS host name verification: 1. From the front panel, press the MENU key, and then select LAN > CONFIG > DNS > VERIFY. 2. Turn the navigation wheel to select either ENABLE or DISABLE. When enabled, the instrument performs a DNS lookup to verify the DNS host name matches the value specified in the lan.config.dns.hostname attribute.
  • Page 34 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 2: Installation To set the duplex mode: 1. From the front panel, press the MENU key and select LAN > CONFIG > DUPLEX. 2. Turn the navigation wheel to select either HALF or FULL. 3.
  • Page 35 Section 2: Installation Model 2601B-PULSE System SourceMeter® Instrument User's Manual Telnet connection The Telnet protocol is similar to raw socket and can be used when you need to interact directly with the instrument. Telnet is often used for debugging and troubleshooting. You need a separate Telnet program to use this protocol.
  • Page 36 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 2: Installation Confirming port numbers To view the port number assigned to each remote interface protocol: 1. From the front panel, press the MENU key, and then select LAN > STATUS > PORT. 2.
  • Page 37 Section 2: Installation Model 2601B-PULSE System SourceMeter® Instrument User's Manual Access the instrument web interface To access the instrument web interface: 1. Open a web browser on the host computer. 2. Enter the IP address of the instrument in the web browser address box. For example, if the instrument IP address is 192.168.1.101, enter 192.168.1.101 in the browser address box.

  • Page 38: Gpib Operation

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 2: Installation Monitoring the LAN The lan.autoconnect command configures the instrument to monitor the LAN for lost connections. All ethernet connections are disconnected if the LAN link is disconnected for longer than the time-out value specified in the lan.linktimeout attribute.
  • Page 39 Section 2: Installation Model 2601B-PULSE System SourceMeter® Instrument User's Manual Figure 23: IEEE-488 connections To connect the instrument to the IEEE-488 bus, line up the cable connector with the connector on the rear panel. Install and tighten the screws securely, making sure not to overtighten them. Refer to Remote interface connections (on page 2-12) for the location of the connector.
  • Page 40 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 2: Installation To set the primary address remotely: gpib.address = address To set the primary address remotely to 20: gpib.address = 20 Note that changing the GPIB address takes effect when the command is processed. Any response messages generated after processing this command are sent with the new settings.
  • Page 41 Section 2: Installation Model 2601B-PULSE System SourceMeter® Instrument User's Manual TALK This indicator is on when the instrument is in the talker active state. Place the instrument in the talk state by addressing it to talk with the correct talk command. TALK is off when the instrument is in the talker idle state.

  • Page 42: Rs-232 Interface Operation

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 2: Installation RS-232 interface operation The following topics contain information about configuring RS-232 communication parameters, sending or receiving command messages, and requesting or retrieving data. To control the 2601B-PULSE, connect a controller or personal computer to the 2601B-PULSE RS-232 interface. Alternatively, you can use the 2601B-PULSE to control another device over RS-232.
  • Page 43 Section 2: Installation Model 2601B-PULSE System SourceMeter® Instrument User's Manual Sending and receiving data The RS-232 interface transfers data using 7 or 8 data bits; 1 stop bit; and no, even, or odd parity. Make sure the device you connect to the 2601B-PULSE also uses the same settings. RS-232 terminator When receiving data over the RS-232 interface, the command interface terminates on line feeds.
  • Page 44 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 2: Installation RS-232 connections Connect the RS-232 serial port of the 2601B-PULSE to the serial port of a computer using a straight-through RS-232 cable terminated with DB-9 connectors. Do not use a null modem cable. The serial port uses the transmit (TXD), receive (RXD), CTS and RTS (if flow control is enabled), and signal ground (GND) lines of the RS-232 standard.

  • Page 45: Software Components For Applications And Instrument Drivers

    Section 2: Installation Model 2601B-PULSE System SourceMeter® Instrument User's Manual Software components for applications and instrument drivers The majority of software applications and all instrument drivers from Keithley Instruments depend on the following software components: • NI-VISA • VISA shared components •...
  • Page 46 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 2: Installation VXIPnP drivers VXIplug&play (VXIPnP) style drivers are Win32 DLLs that have some standard functions defined by IVI Foundation (ivifoundation.org), such as: • init • close • error_message • reset • self_test •...
  • Page 47 Section 2: Installation Model 2601B-PULSE System SourceMeter® Instrument User's Manual Instrument driver examples All Keithley drivers come with examples written in several programming languages that show you how to do common tasks with the instruments. The examples are available in the drivers and through Test Script Builder.

  • Page 48: Keithley I/O Layer

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 2: Installation Keithley I/O layer The Keithley I/O Layer (KIOL) is a software package that contains several utilities and drivers. It is mainly used as a supplement to IVI drivers or application software like Test Script Builder (TSB). For additional detail on the Keithley I/O layer, including computer requirements and installation instructions, see the tek.com/keithley...

  • Page 49: Interlock Operation

    Section 2: Installation Model 2601B-PULSE System SourceMeter® Instrument User's Manual When an interlock is required for safety, a separate circuit should be provided that meets the requirements of the application to reliably protect the operator from hazardous conditions. The digital I/O port is a suitable source for the 5 V required to power the physical interlock provided by the 2601B-P-INT.
  • Page 50 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 2: Installation To enable the interlock through the front panel: 1. Press the CONFIG key. 2. Select the OUTPUT menu item. 3. Select INTERLOCK. 4. Select DISABLE to disable the interlock or ENABLE to enable it. To enable the interlock using a remote command, send: smua.interlock.enable = smua.ENABLE To disable the interlock using a remote command, send:...
  • Page 51 Section 2: Installation Model 2601B-PULSE System SourceMeter® Instrument User's Manual Interlock connections using external source Use a +5 V external power supply with a ±5% tolerance. The 2601B-P-INT interlock requires approximately 125 mA to operate. Use a two-conductor low-voltage cable to connect the +5 V source to the low-voltage remote switch. The recommended cable is 22 AWG (20 AWG maximum) with 1.2 mm to 1.6 mm outer diameter.

  • Page 52: System Information

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 2: Installation To assemble the interlock: 1. Insert the wire into the CS-1616-3. 2. Use a pair of pliers to squeeze the connector sections together. You cannot disassemble and reuse the CS-1616-3. The interlock pin locations and connections are shown in the following figure.
  • Page 53 Section 2: Installation Model 2601B-PULSE System SourceMeter® Instrument User's Manual To retrieve system information from a remote interface: To retrieve the firmware revision and serial number, send the *IDN? query. For more information on retrieving system information, see the Model 2601B-PULSE Reference Manual.

  • Page 54: Instrument Description

    Section 3 Instrument description In this section: Controls, indicators, and connectors ........3-1 Menu overview ................. 3-7 Beeper ................... 3-14 Displayed error and status messages ........3-14 Display operations ..............3-15 Connecting the USB flash drive ..........3-27 Restoring the factory default setups using remote commands3-28 Using the web interface ............
  • Page 55 Section 3: Instrument description Model 2601B-PULSE System SourceMeter® Instrument User's Manual 2. SMU setup, performance control, special operation, and numbers SMU (source-measure unit) setup When the pulser is disabled, selects the source function (voltage or current) and places the cursor in the source field for editing. When the pulser is enabled, this key has no action.
  • Page 56 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 3: Instrument description Numbers When enabled and in EDIT mode, the number keys (0 to 9, +/-, 0000) allow direct Number keys numeric entry. Press the navigation wheel to enter EDIT mode. For more information, Setting a value (on page 3-12).
  • Page 57 Section 3: Instrument description Model 2601B-PULSE System SourceMeter® Instrument User's Manual 7. Navigation wheel Turn the navigation wheel to: ▪ Move the cursor to the left and the right (the cursor indicates the selected value or item) ▪ While in edit mode, increase or decrease a selected source or compliance value Push the navigation wheel to: ▪...

  • Page 58: Rear Panel

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 3: Instrument description Rear panel The 2601B-PULSE rear panel with the 2601B-P-INT installed is shown below. The descriptions of the rear-panel components follow the figure. Figure 29: Rear panel 1. FORCE HI and FORCE LO connectors These connectors provide connections for FORCE HI and FORCE LO.
  • Page 59 Section 3: Instrument description Model 2601B-PULSE System SourceMeter® Instrument User's Manual 4. INTERLOCK connector This connector provides a connection for the optional interlock. Refer to Using the interlock (on page 2-37) for information on setting up and connecting the interlock. 5.

  • Page 60: Menu Overview

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 3: Instrument description 11. TSP-Link Expansion interface that allows a 2601B-PULSE and other TSP-enabled instruments to trigger and communicate with each other. 12. Power module Contains the ac line receptacle and power line fuse. The instrument can operate on line voltages of 100 V ac to 240 V ac at line frequencies of 50 Hz or 60 Hz.
  • Page 61 Section 3: Instrument description Model 2601B-PULSE System SourceMeter® Instrument User's Manual Main menu The main menu structure is summarized in the following figure and table. For other menu items, see (on page 3-10). Configuration menus Figure 30: Main menu tree 2601B-PULSE-900-01 Rev.
  • Page 62 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 3: Instrument description The following table contains descriptions of the main menu options and cross-references to related information. To access a menu option, press the MENU key, turn the navigation wheel to move the cursor to select an item, and press the navigation wheel.
  • Page 63 Section 3: Instrument description Model 2601B-PULSE System SourceMeter® Instrument User's Manual Menu selection Description For more information, see: Controls the key beeps Beeper (on page 3-14) BEEPER - ENABLE Enables the key beeps - DISABLE Disables the key beeps Configures the line frequency Line frequency configuration (on page LINE-FREQ...
  • Page 64 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 3: Instrument description Figure 31: CONFIG menu tree 1 Select a value 2 Enter a value Press the EXIT key to return to a previous menu. 2601B-PULSE-900-01 Rev. A August 2021 3-11...

  • Page 65: Setting Values

    Section 3: Instrument description Model 2601B-PULSE System SourceMeter® Instrument User's Manual Descriptions of the configuration menus The following table contains descriptions of the configuration menus and cross-references to related information. To access, press the Options For more information, see: CONFIG key and then: V-source sense and low range;...
  • Page 66 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 3: Instrument description Numeric entry method: 1. If the keypad is disabled, press the MENU key, then select DISPLAY > NUMPAD > ENABLE. 2. Use the CURSOR arrow keys (or turn the navigation wheel) to move the cursor to the value that needs to be changed.

  • Page 67: Beeper

    Section 3: Instrument description Model 2601B-PULSE System SourceMeter® Instrument User's Manual To edit compliance limit values: 1. Press the LIMIT key. 2. Select the type of compliance (CURRENT, VOLTAGE, or POWER). 3. Press the navigation wheel or the ENTER key to enter edit mode. The EDIT indicator is illuminated.

  • Page 68: Display Operations

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 3: Instrument description Display operations This section describes methods for using the display and determining what is displayed. Display mode Use the DISPLAY key to scroll through the display modes shown in the figure below. Figure 32: Display modes when the pulser is disabled Figure 33: Display modes when the pulser is enabled 2601B-PULSE-900-01 Rev.

  • Page 69: Display Functions And Attributes

    Section 3: Instrument description Model 2601B-PULSE System SourceMeter® Instrument User's Manual Display functions and attributes The display functions and attributes for the front panel are described in this section. The following table lists each display function and attribute in alphabetical order and cross references it to the topic where the function or attribute is explained.

  • Page 70: Display Features

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 3: Instrument description Display features You can set the front-panel display to display the units of measure, number of digits, and customized text messages for your applications. Display screen The front panel displays source-measure values and readings or user-defined messages. The display screen options include: •...

  • Page 71: Display Messages

    Section 3: Instrument description Model 2601B-PULSE System SourceMeter® Instrument User's Manual Display trigger wait and clear To set the instrument to wait for the front-panel TRIG key to be pressed, send the display.trigger.wait() function. To clear the trigger event detector, send the display.trigger.clear() function.
  • Page 72 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 3: Instrument description Cursor position When displaying a message, the cursor position determines where the message starts. On power-up, the cursor is positioned at row 1, column 1 (see the following figure). At this cursor position, a user-defined message is displayed on the top row (row 1).
  • Page 73 Section 3: Instrument description Model 2601B-PULSE System SourceMeter® Instrument User's Manual The following programming example illustrates how to position the cursor on row 2, column 1, and then read the cursor position: display.setcursor(2, 1) row, column = display.getcursor() print(row, column) Output: 2.00000e+00 1.00000e+00 Displaying text messages...
  • Page 74 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 3: Instrument description The following programming example illustrates how to use the $N and $B character codes to display the message Test in Process on the top line and the blinking message Do Not Disturb on the bottom line: display.clear() display.settext("Test in Process $N$BDo Not Disturb")

  • Page 75: Input Prompting

    Section 3: Instrument description Model 2601B-PULSE System SourceMeter® Instrument User's Manual Sending the command without the row parameter returns both lines of the display. The $N character code is included to show where the top line ends and the bottom line begins. The $N character code is returned even if embellished is set to false.
  • Page 76 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 3: Instrument description Parameter value prompting You can use the display.inputvalue() and display.prompt() functions to create an editable input field on the user screen at the present cursor position. The display.inputvalue() function uses the user screen at the present cursor position. Once the command is finished, it returns the user screen to its previous state.

  • Page 77: Indicators

    Section 3: Instrument description Model 2601B-PULSE System SourceMeter® Instrument User's Manual The following programming example illustrates how to prompt the operator to enter a source voltage value for SMU A: display.clear() value = display.prompt("0.00", "V", "Enter source voltage") display.screen = display.SMUA smua.source.levelv = value The script pauses after displaying the prompt message and waits for the operator to enter the voltage level.

  • Page 78: Local Lockout

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 3: Instrument description For example, assume the returned bitmap value is 34061. The binary equivalent of this value is as follows: 1000010100001101 For the above binary number, the following bits are set to 1: 16, 11, 9, 4, 3, and 1. Using the table, the following indicators are on: REL, REM, EDIT, AUTO, 4W, and FILT.
  • Page 79 Section 3: Instrument description Model 2601B-PULSE System SourceMeter® Instrument User's Manual Adding USER TESTS menu entries You can use the following function in either of two ways to add an entry into the USER TESTS menu: display.loadmenu.add(displayname, code) display.loadmenu.add(displayname, code, memory) Where: displayname The name string that is added to the USER TESTS menu.

  • Page 80: Running A Test From The Front Panel

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 3: Instrument description Deleting USER TESTS menu entries You can use the following function to delete an entry from the front-panel USER TESTS menu: display.loadmenu.delete(displayname) Where: displayname Name to delete from the menu. The following programming example removes the entry named Part1 from the front-panel USER TESTS menu: display.loadmenu.delete("Part1")

  • Page 81: Restoring The Factory Default Setups Using Remote Commands

    Section 3: Instrument description Model 2601B-PULSE System SourceMeter® Instrument User's Manual Restoring factory default setups using remote commands Use one of the reset functions to return the 2601B-PULSE to the original factory defaults. An example of each type of reset is shown in the following program examples. ®...

  • Page 82: How To Access The Web Interface

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 3: Instrument description How to access the web interface You can access the web interface by entering the IP address of the instrument in the address line of an internet browser. To get the IP address of the instrument: 1.

  • Page 83: Use The Id Button To Identify The Instrument

    Section 3: Instrument description Model 2601B-PULSE System SourceMeter® Instrument User's Manual Figure 36: Web interface Welcome page Use the ID button to identify the instrument If you have a bank of instruments, you can select the ID button to determine which instrument you are communicating with.

  • Page 84: Change The Ip Configuration Through The Web Interface

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 3: Instrument description Change the IP configuration through the web interface You can change the LAN settings through the web interface on the instrument. The LAN settings you can change include the IP address, subnet mask, gateway, and DNS address. If you change the IP address through the web interface, the web interface tries to redirect to the IP address that is configured in the instrument.

  • Page 85: Using The Virtual Front Panel

    Section 3: Instrument description Model 2601B-PULSE System SourceMeter® Instrument User's Manual The default password is "" (no password). You cannot retrieve a lost password from any command interface. You can reset the password from the front panel. Select MENU, then RESET-PASSWORD. For information on the TSP commands, refer to localnode.passwordmode in the Model 2601B-PULSE Reference Manual.

  • Page 86: View Buffer Data Using The Web Interface

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 3: Instrument description View buffer data using the web interface You can view the data in the reading buffers on the Reading Buffers page of the Virtual Front Panel web page. To view the data, at the top of the virtual front panel, select Reading Buffers. On the Reading Buffers page, select a reading buffer from the Reading Buffer list.

  • Page 87: Download Reading Buffer Data Using The Web Interface

    Section 3: Instrument description Model 2601B-PULSE System SourceMeter® Instrument User's Manual Download reading buffer data using the web interface You can download reading buffer data to a .csv file from the Reading Buffers page of the web interface. The data shown in the table on the Reading Buffers page is downloaded. To download buffer data: 1.

  • Page 88: Review Events In The Lxi Event Log

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 3: Instrument description Review events in the LXI Event Log The Log option opens the LXI Event Log. The event log records all LXI events that the instrument generates and receives. The log includes the following information: •...
  • Page 89 Section 3: Instrument description Model 2601B-PULSE System SourceMeter® Instrument User's Manual The timestamp, event identifier, IP address, and the domain name identify the incoming and outgoing LXI trigger packets. The following table provides detailed descriptions for the columns in the event log.

  • Page 90: Help

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 3: Instrument description Accessing the event log from the command interface You can access the event log from any remote command interface. The event log must be enabled before LXI trigger events can be viewed. To enable the event log, send: eventlog.enable = 1 To view the event log from a remote interface, send: print(eventlog.all())

  • Page 91: Operation

    Section 4 Operation In this section: Operation overview ..............4-1 DUT test connections ............... 4-7 Sense mode selection ............4-20 Output-off modes ..............4-21 Pulser operation ..............4-25 Using the trigger model ............4-32 Operation overview The 2601B-PULSE is a single channel source-measure instrument with the full SMU functionality of a ®...

  • Page 92: Limits

    Section 4: Operation Model 2601B-PULSE System SourceMeter® Instrument User's Manual When the pulser is disabled, the instrument provides the full functionality of a 4-quadrant SMU. You can use the front panel or remote commands to configure the instrument to perform the following source-measure operations: •...

  • Page 93: Setting The Limit

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 4: Operation The only exception to the limit not being exceeded is the voltage limit when operating as a current source. To avoid excessive (and potentially destructive) currents from flowing, the voltage limit sources or sinks up to 102 mA for current source ranges on or below 100 mA.

  • Page 94: Pulser Protection Circuit

    Section 4: Operation Model 2601B-PULSE System SourceMeter® Instrument User's Manual To set the limit, send the command with the limit value as the parameter. The following programming example illustrates how to set the current, voltage, and power limit to 50 mA, 4 V, and 1 W respectively: smua.source.limiti = 50e-3 smua.source.limitv = 4...

  • Page 95: Sink Operation

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 4: Operation Setting and checking the pulser protection levels To set the voltage protection level using remote commands: Send the command smua.pulser.protect.sensev with the level defined. For example, to set a protection level of 8 V, send: smua.pulser.protect.sensev = 8 To set the absolute voltage protection level using remote commands: Send the command smua.pulser.protect.sourcev with the level defined.
  • Page 96 Section 4: Operation Model 2601B-PULSE System SourceMeter® Instrument User's Manual When the pulser is disabled, the accuracy of the limit opposite in polarity from the source is diminished unless the instrument is in sink mode. Enabling sink mode reduces the source limit inaccuracy seen when operating in quadrants II and IV.

  • Page 97: Dut Test Connections

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 4: Operation DUT test connections Hazardous voltages may be present in the test system. To prevent injury or death, remove power from the instrument or test system and discharge any energy storage components (for example, capacitors or cables) before changing any connections that might allow contact with an uninsulated conductor.

  • Page 98: Force And Sense Connectors

    Section 4: Operation Model 2601B-PULSE System SourceMeter® Instrument User's Manual When the SMU or pulser is sourcing current, you can measure voltage or current, as shown in the following figure. Figure 42: Fundamental source-measure configuration: Source I Current meter Current source ↑...
  • Page 99 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 4: Operation Figure 44: Coaxial connectors for 2601B-PULSE All connections are electrically isolated from chassis ground. The rear panel of the 2601B-PULSE provides a low-noise chassis ground banana jack that can be used as a common signal ground point for the SENSE and FORCE LOs.

  • Page 100: 2-Wire Local Sensing Connections

    Section 4: Operation Model 2601B-PULSE System SourceMeter® Instrument User's Manual The FORCE and SENSE connectors of the 2601B-PULSE are rated for connection to circuits rated Measurement Category I only, with transients rated less than 1500 V . Do not PEAK connect the 2601B-PULSE terminals to CAT II, CAT III, or CAT IV circuits.
  • Page 101 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 4: Operation When the pulser is enabled, you must use 4-wire remote sensing connections. The instrument uses remote sensing regardless of the sense setting. When the pulser is disabled, the default sense setting is 2-wire local. If you need to use 4-wire remote sensing, you must change the sense.

  • Page 102: Connections For Pulser Operation

    Section 4: Operation Model 2601B-PULSE System SourceMeter® Instrument User's Manual Connections for pulser operation Pulser measurements must be made using 4-wire (Kelvin) connections. Refer to 4-wire remote sensing connections (on page 4-10) for connection diagrams. When making pulser measurements, the allowed maximum total inductance is 3 µH. The open areas between FORCE leads can introduce inductance.
  • Page 103 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 4: Operation The contact check function also detects open circuits that may occur when a four-point probe is misplaced or misaligned. This relationship is shown schematically in the figure below, where R is the resistance of the mechanical contact at the DUT, and R is the series resistance of relays and cables.
  • Page 104 Section 4: Operation Model 2601B-PULSE System SourceMeter® Instrument User's Manual Contact check commands The following table summarizes the contact check commands. For a more complete description of these commands, refer to the “TSP command reference” section of the Model 2601B-PULSE Reference Manual.

  • Page 105: Guarding And Shielding

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 4: Operation Guarding and shielding You can optimize source-measure performance and safety with the effective use of guarding and shielding (noise and safety shields). Safety shield You can implement a safety shield to protect the operator from hazards that arise when testing devices under test (DUTs).
  • Page 106 Section 4: Operation Model 2601B-PULSE System SourceMeter® Instrument User's Manual Figure 49: Connections for guarding For clarity, sense leads for 4-wire connections are not shown. 1 Test circuit 2 Metal guard shield 3 Coaxial cable shield Noise shield Use a noise shield (see following figure) to prevent unwanted signals from being introduced into the test circuit.
  • Page 107 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 4: Operation Connections to LO on the 2601B-PULSE are not necessarily at 0 V. Hazardous voltages could exist between LO and chassis ground. Make sure that high-voltage precautions are taken throughout the test system. Alternatively, limit hazardous levels by adding external protection to limit the voltage between LO and chassis.
  • Page 108 Section 4: Operation Model 2601B-PULSE System SourceMeter® Instrument User's Manual Connect the enclosure of all metal test fixtures to protective earth (safety ground). See your specific test fixture for information. Nonconductive test fixtures must be rated to double the maximum capability of the test equipment in the system. Figure 51: Using shielding and guarding together 1 Test circuit 2 Metal guard shield...

  • Page 109: Test Fixture

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 4: Operation Test fixture You can use a test fixture to house a device or test circuit. The test fixture can be a metal or nonconductive enclosure and is typically equipped with a lid and an interlock switch. When properly used, the output of the 2601B-PULSE turns off when the lid of the test fixture is opened.

  • Page 110: Sense Mode Selection

    Section 4: Operation Model 2601B-PULSE System SourceMeter® Instrument User's Manual Sense mode selection When the pulser is disabled, the voltage sense mode can be set to use 2-wire local sensing connections (on page 4-10) or 4-wire remote sensing connections (on page 4-10). The default sense setting is 2-wire local.

  • Page 111: Output-Off Modes

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 4: Operation Output-off modes Carefully consider and configure the appropriate output-off state, source function, and compliance limits before connecting the 2601B-PULSE to a device that can deliver energy (for example, other voltage sources, batteries, capacitors, solar cells, or other 2601B-PULSE instruments).

  • Page 112: Output-Off Function

    Section 4: Operation Model 2601B-PULSE System SourceMeter® Instrument User's Manual You can use the 2601B-PULSE as a current meter when it is in zero output-off mode because it outputs 0 V but measures current. When the pulser is enabled and the zero output-off mode is selected, the output circuit is shorted and measurements cannot be made.

  • Page 113: Output-Off Limits (Compliance)

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 4: Operation Selecting the output-off function This setting is used only when the output is turned off and the source-measure unit (SMU) is in NORMAL output-off mode. To configure the output-off function from the front panel: 1.
  • Page 114 Section 4: Operation Model 2601B-PULSE System SourceMeter® Instrument User's Manual To configure the output-off limits from the front panel: 1. Press the CONFIG key. 2. Press the OUTPUT ON/OFF control. 3. Select OFF-STATE and then select LIMIT. 4. Select CURRENT or VOLTAGE. 5.

  • Page 115: Pulser Operation

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 4: Operation Pulser operation This section contains information specific to using the pulser capabilities of the 2601B-PULSE. The pulser generates fast-edge current pulses and measures current and voltage. Pulser operation must be set up using TSP commands through a remote communication interface. For information on setting up remote communications, refer to Remote communication interfaces page 2-12).

  • Page 116: Pulser Functional Block Diagram

    Section 4: Operation Model 2601B-PULSE System SourceMeter® Instrument User's Manual Pulser functional block diagram The following figure shows a simplified block diagram that represents the function of the pulser circuit. Figure 52: Functional block diagram of the pulser circuit Enable and disable the pulser To use the pulser of the 2601B-PULSE, you must enable it.

  • Page 117: Tsp Commands Used With The Pulser

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 4: Operation TSP commands used with the pulser You must use remote commands and the trigger model to generate fast-edge current pulses and measure current and voltage. The following table lists attributes that are used to set up the pulser and measure the resulting current and voltage.

  • Page 118: Settings Ignored When The Pulser Is Disabled

    Section 4: Operation Model 2601B-PULSE System SourceMeter® Instrument User's Manual Settings ignored when the pulser is disabled The following pulser settings do not affect source-measure unit (SMU) operation when the pulser is disabled: • smua.pulser.measure.aperture • smua.pulser.measure.delay • smua.pulser.protect.sensev • smua.pulser.protect.sourcev •...
  • Page 119 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 4: Operation To program the example pulse sweep, send the following commands: -- Restore instrument defaults and clear the measure buffer. reset() smua.nvbuffer1.clear() -- Disable the pulser. smua.pulser.enable = smua.DISABLE -- Set contact check speed to fast. smua.contact.speed = smua.CONTACT_FAST -- Set the contact check threshold to 100 ohms.
  • Page 120 Section 4: Operation Model 2601B-PULSE System SourceMeter® Instrument User's Manual smua.pulser.measure.delay = 9e-6 smua.trigger.measure.v(smua.nvbuffer1) -- Set the pulser ranges. smua.pulser.rangei = 10 smua.pulser.rangev = 10 -- Enable pulser. smua.pulser.enable = smua.ENABLE -- Turn the source output on. smua.source.output = smua.OUTPUT_ON -- Initiate the trigger model.
  • Page 121 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 4: Operation To program the example pulse, send the following commands: -- Restore instrument defaults and clear measure buffer. reset() smua.nvbuffer1.clear() -- Set the number of pulses to 1. smua.trigger.count = 1 -- Enable source level changes.

  • Page 122: Using The Trigger Model

    Section 4: Operation Model 2601B-PULSE System SourceMeter® Instrument User's Manual Using the trigger model The source-measure unit (SMU) in the 2601B-PULSE has a remote trigger model that supports a wide range of triggering features for source sweeps, triggered measurements, and pulse actions. Measurements using the trigger model can be made synchronously with sourcing actions or they can be made asynchronously.
  • Page 123 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 4: Operation Figure 56: Trigger model: Asynchronous mode When the smua.trigger.measure.action attribute is set to smua.DISABLE or smua.ENABLE, the trigger model operates in synchronous measurement mode. When it is set to smua.ASYNC, it operates in asynchronous mode.

  • Page 124: Trigger Model Sections

    Section 4: Operation Model 2601B-PULSE System SourceMeter® Instrument User's Manual Trigger model sections As shown in the previous figures, the trigger model consists of the sections idle, arm layer, and trigger layer. The SMU is in the idle state if a sweep is not in process. Use the smua.trigger.initiate() function to move the SMU from the idle state to the arm layer.

  • Page 125: Enabling Pulse Sweeps Using The End Pulse Action

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 4: Operation For more information about the sweep functions, see the "Sweep operations" section in the Model 2601B-PULSE Reference Manual. When the pulser is disabled, configured source and measure delays are imposed when the SMU executes the source and measure action blocks.

  • Page 126: Maintenance

    Section 5 Maintenance In this section: Introduction ................5-1 Displaying the serial number ............ 5-1 Line fuse replacement .............. 5-1 Front-panel tests ..............5-3 Upgrading the firmware ............5-4 Introduction The information in this section describes routine maintenance of the instrument that the operator can perform.
  • Page 127 Section 5: Maintenance Model 2601B-PULSE System SourceMeter® Instrument User's Manual Disconnect the line cord at the rear panel and remove all test leads connected to the instrument before replacing a line fuse. Failure to do so could expose the operator to hazardous voltages that could result in personal injury or death.

  • Page 128: Front-Panel Tests

    Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 5: Maintenance Front-panel tests The front-panel tests test the functionality of the front-panel keys and the display. In the following procedures, highlight the menu item and press the ENTER key to select it. You can also select a menu item by pressing the navigation wheel.

  • Page 129: Upgrading The Firmware

    Section 5: Maintenance Model 2601B-PULSE System SourceMeter® Instrument User's Manual 5. To start the display test, press the ENTER key. There are three parts to the display test. Each time the ENTER key or the navigation wheel is pressed, the next part of the test sequence is selected.
  • Page 130 Model 2601B-PULSE System SourceMeter® Instrument User's Manual Section 5: Maintenance To upgrade or downgrade the firmware using the front panel: 1. Turn the instrument power off. Wait a few seconds. 2. Turn the instrument power on. 3. Copy the firmware file to a USB flash drive. 4.

  • Page 131: Using Tsb To Upgrade The Firmware

    Section 5: Maintenance Model 2601B-PULSE System SourceMeter® Instrument User's Manual Using TSB to upgrade the firmware After downloading the flash file from tek.com/keithley, you can use Test Script Builder (TSB) to upgrade the firmware of your 2601B-PULSE. To upgrade the firmware using Test Script Builder: 1.

  • Page 132: Next Steps

    Section 6 Next steps In this section: Additional 2601B-PULSE information ........6-1 Additional 2601B-PULSE information For additional information about the 2601B-PULSE, refer to the Keithley Instruments website (tek.com/keithley), which contains the most up-to-date information. From the website, you can access: •...
  • Page 133 Specifications are subject to change without notice. All Keithley trademarks and trade names are the property of Keithley Instruments, LLC. All other trademarks and trade names are the property of their respective companies. Keithley Instruments • 28775 Aurora Road • Cleveland, Ohio 44139 • 440-248-0400 • 1-800-833-9200 • tek.com/keithley 4/2020...

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