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Tektronix Keithley 4200A-CVIV User Manual

Tektronix Keithley 4200A-CVIV User Manual

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Model 4200A-CVIV
Multi-Switch
USER' S MANUAL
*P4200A-CVIV-900-01F*
March 2025
4200A-CVIV-900-01F

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Summary of Contents for Tektronix Keithley 4200A-CVIV

  • Page 1 Model 4200A-CVIV Multi-Switch USER' S MANUAL *P4200A-CVIV-900-01F* March 2025 4200A-CVIV-900-01F...
  • Page 2 Model 4200A-CVIV Multi-Switch User's Manual...
  • Page 3 © 2025, Keithley Instruments 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 is strictly prohibited. All Keithley Instruments product names are trademarks or registered trademarks of Keithley Instruments, LLC.

  • Page 4: Safety Precautions

    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 Introduction .......................... 1-1 Extended warranty ....................... 1-2 Contact information ......................1-2 General ratings ........................1-2 Specifications ........................1-3 Hardware and software requirements .................. 1-3 Getting started ......................2-1 Introduction .......................... 2-1 DUT connections panel summary ..................2-1 DUT channel connections ......................
  • Page 7 Table of contents Model 4200A-CVIV Multi-Switch User's Manual Bias tee switching ........................4-9 Automate switching between 2-wire and 4-wire mode ............4-12 Measurement compensation ....................4-14 CVU compensation ......................... 4-14 Guidelines to determine required compensation ..............4-15 4200A-CVIV compensation connections ................. 4-15 Control the 4200A-CVIV with Clarius .................

  • Page 8: In This Section

    Hardware and software requirements ........1-3 Introduction The Keithley 4200A-CVIV Multi-Switch is a multiplexed switching accessory for the 4200A-SCS that allows you to switch between I-V and C-V measurements with no changes to cables or connections to the device under test (DUT). You can also perform I-V testing with up to four SMUs (4200-SMU, 4201-SMU, 4210-SMU, or 4211-SMU) and switch the outputs of the 4210-CVU or 4215-CVU to any of the four output terminals.

  • Page 9: Extended Warranty

    Contact information If you have any questions after you review the information in this documentation, please contact your local Tektronix 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.

  • Page 10: Specifications

    Model 4200A-CVIV Multi-Switch User's Manual Section 1: Introduction Specifications For instrument specifications, refer to the 4200A-SCS Parameter Analyzer Datasheet, available at tek.com/keithley. Hardware and software requirements The following are required to use the 4200A-CVIV: • Keithley 4200A-SCS Parameter Analyzer • For 2-wire measurements, one 4200-TRX-0.75 or CA-534-24B1 triaxial cable per channel •...

  • Page 11: Getting Started

    Section 2 Getting started In this section: Introduction ................2-1 DUT connections panel summary ..........2-1 Inputs panel summary .............. 2-2 Display summary ..............2-4 Introduction This section provides an overview of the 4200A-CVIV display and connectors. DUT connections panel summary Device connections are made to the device under test (DUT) instrument panel of the 4200A-CVIV.

  • Page 12: Dut Channel Connections

    Section 2: Getting started Model 4200A-CVIV Multi-Switch User's Manual DUT channel connections DUT channel Triaxial force and sense connectors are connections provided on channels 1 through 4 for connection to a DUT. Ground connections Ground connections Two ground screws are provided for connections to protective earth (safety ground).

  • Page 13: Connections

    Model 4200A-CVIV Multi-Switch User's Manual Section 2: Getting started Figure 3: 4200A-CVIV inputs panel (SMU inputs empty) Connections HCUR CVU input The HCUR (force HI) CVU input is an SMA socket that connects to the 4210-CVU or 4215-CVU. HPOT CVU input The HPOT (sense HI) CVU input is an SMA socket that connects to the 4210-CVU or 4215-CVU.

  • Page 14: Display Summary

    Section 2: Getting started Model 4200A-CVIV Multi-Switch User's Manual SMU inputs The 4200A-CVIV-SPT SMU Pass-Thru module can be installed in any bay of the 4200A-CVIV. (4200A-CVIV-SPT The triaxial connectors provide a direct interface SMU Pass-Thru with your SMU. installed) SMU inputs The 4200-PA Remote Preamplifier can be installed in any bay of the 4200A-CVIV.
  • Page 15 Model 4200A-CVIV Multi-Switch User's Manual Section 2: Getting started When you reset the 4200A-CVIV, the instrument returns to the default Open state. Any terminal setting names are removed and replaced with Open, as shown in the following figure. Figure 5: Default state display of the 4200A-CVIV 4200A-CVIV-900-01 Rev.

  • Page 16: Install And Configure The 4200A-Cviv

    Section 3 Install and configure the 4200A-CVIV In this section: Introduction ................3-1 Unpack and inspect the instrument .......... 3-1 Mechanical dimensions ............3-2 Location considerations ............3-3 Connect to protective earth ............3-4 Install and remove preamplifier and Pass-Thru modules ..3-5 Install and remove slot blockers ..........

  • Page 17: Mechanical Dimensions

    Section 3: Install and configure the 4200A-CVIV Model 4200A-CVIV Multi-Switch User's Manual You should have received the 4200A-CVIV with the following accessories: • Two 4200A-CVIV-SPT SMU Pass-Thru Modules • One 4200-MTRX-2 Mini Ultra Low Noise Triax Cable, 2 m (6.6 ft) •...

  • Page 18: Location Considerations

    Model 4200A-CVIV Multi-Switch User's Manual Section 3: Install and configure the 4200A-CVIV Figure 7: 4200A-CVIV mechanical dimensions, bumpers not installed Location considerations The 4200A-CVIV is designed to be located as close as possible to a probe station to ensure accurate measurements. 4200A-CVIV-900-01 Rev.

  • Page 19: Connect To Protective Earth

    Section 3: Install and configure the 4200A-CVIV Model 4200A-CVIV Multi-Switch User's Manual Connect to protective earth The 4200A-CVIV must be connected to protective earth (safety ground) using both of the supplied green-yellow ground cables. The ground wires must be attached to both ground screws on the 4200A-CVIV before powering on the unit, and they must be connected independently to earth ground (do not connect both ground wires to the same earth safety ground).

  • Page 20: Install And Remove Preamplifier And Pass-Thru Modules

    Model 4200A-CVIV Multi-Switch User's Manual Section 3: Install and configure the 4200A-CVIV Install and remove preamplifier and Pass-Thru modules You can install up to four Keithley 4200-PA Remote Preamplifiers or 4200A-CVIV-SPT SMU Pass-Thru modules, shown in the following figure, in the 4200A-CVIV in any combination. Figure 9: 4200-PA Remote PreAmp and 4200A-CVIV-SPT SMU Pass-Thru modules Make sure that the preamplifier and Pass-Thru modules are properly aligned when they are inserted into the SMU input slots of the 4200A-CVIV.
  • Page 21 Section 3: Install and configure the 4200A-CVIV Model 4200A-CVIV Multi-Switch User's Manual To install a preamplifier or Pass-Thru module: 1. Disconnect any cables from the instrument. 2. Remove the rubber bumper from the SMU Inputs side of the 4200A-CVIV. 3. Using a Phillips-head screwdriver, loosen the two captive screws securing the panel cover to the instrument.
  • Page 22 Model 4200A-CVIV Multi-Switch User's Manual Section 3: Install and configure the 4200A-CVIV Figure 11: 4200A-CVIV input panel To remove a preamplifier or Pass-Thru module: 1. Disconnect any cables from the 4200A-CVIV before installing a module. 2. Remove the rubber bumper from the SMU Inputs side of the 4200A-CVIV. 3.

  • Page 23: Install And Remove Slot Blockers

    Section 3: Install and configure the 4200A-CVIV Model 4200A-CVIV Multi-Switch User's Manual Install and remove slot blockers Each SMU input on the 4200A-CVIV that is not in use must have its access restricted by a slot blocker. Failure to use a slot blocker may result in personal injury or death due to electric shock.

  • Page 24: Mount The 4200A-Cviv

    Model 4200A-CVIV Multi-Switch User's Manual Section 3: Install and configure the 4200A-CVIV Figure 13: SMU Inputs panel cover with slot blockers installed To remove a slot blocker: On the rear of the panel cover, press one of the tabs on the inside edge of the blocker flange while pushing out.
  • Page 25 Section 3: Install and configure the 4200A-CVIV Model 4200A-CVIV Multi-Switch User's Manual Figure 14: 4200A-CVIV mounting dimensions 3-10 4200A-CVIV-900-01 Rev. F March 2025...

  • Page 26: Make Connections To The 4200A-Cviv

    Model 4200A-CVIV Multi-Switch User's Manual Section 3: Install and configure the 4200A-CVIV Make connections to the 4200A-CVIV Make connections using 4200-TRX-0.75 or CA-534-24B1 triaxial cables. To make connections to the 4200A-CVIV: 1. If the CVIV is connected to the 4200A-SCS, turn off 4200A-SCS system power. 2.

  • Page 27: Switching And Software Configuration

    Section 4 Switching and software configuration In this section: Introduction ................4-1 4200A-CVIV switching ............. 4-1 Measurement compensation ..........4-14 Control the 4200A-CVIV with Clarius ........4-18 Control the 4200A-CVIV with LPT commands ....... 4-28 Introduction This section describes the 4200A-CVIV switching output modes and how to do measurement compensation.
  • Page 28 Section 4: Switching and software configuration Model 4200A-CVIV Multi-Switch User's Manual • Bias tee switching for C-V measurements: C-V measurements up to 200 V DC bias. ▪ Bias tee SMU CV HI or bias tee SMU CV LO (on page 4-10): Allows a DC current of up to 1 A, which is ideal for on-state device measurements.

  • Page 29: Open

    Model 4200A-CVIV Multi-Switch User's Manual Section 4: Switching and software configuration Figure 15: 4200A-CVIV simplified switching Open Select the Open setting for an output channel if nothing is connected to the output terminal. This is the default setting for the channels on power up. The switches in the previous figure are all shown in the open position.

  • Page 30: Smu Switching

    Section 4: Switching and software configuration Model 4200A-CVIV Multi-Switch User's Manual SMU switching The 4200A-CVIV can connect and disconnect the force and sense terminals of the SMU channels to the output terminals. For example, select the SMU option for all four channels to perform I-V testing on a four-terminal device.

  • Page 31: Cv Hi Switching

    Model 4200A-CVIV Multi-Switch User's Manual Section 4: Switching and software configuration CV HI switching The 4200A-CVIV can switch the HI connections of the 4210-CVU or 4215-CVU (HPOT and HCUR) to any of the output channels. You can make C-V measurements between any set of output terminals.

  • Page 32: Cv Lo Switching

    Section 4: Switching and software configuration Model 4200A-CVIV Multi-Switch User's Manual CV LO switching The 4200A-CVIV can switch the LO connections of the 4210-CVU or 4215-CVU (LPOT and LCUR) to any of the output channels. You can perform C-V measurements between any set of output terminals.

  • Page 33: Cv Guard Switching

    Model 4200A-CVIV Multi-Switch User's Manual Section 4: Switching and software configuration CV Guard switching The 4200A-CVIV can apply an effective guard signal to any output terminal. You can make C-V measurements while guarding device terminals that should not be included in the measurement.

  • Page 34: Ground Unit Switching

    Section 4: Switching and software configuration Model 4200A-CVIV Multi-Switch User's Manual Ground unit switching The 4200A-CVIV supports a ground unit (GNDU) that can be switched to any one of the four output channels. You can use a miniature triaxial-to-triaxial cable assembly to connect GNDU SENSE on the 4200A-CVIV to the SENSE connector of the ground unit on the 4200A-SCS.

  • Page 35: Ac-Coupled Ac Ground Configuration

    Model 4200A-CVIV Multi-Switch User's Manual Section 4: Switching and software configuration AC-coupled AC ground configuration The following figure shows a 4200A-CVIV AC coupled with AC ground configuration. This configuration provides an AC-coupled, low-impedance return to ground through the 4200A-CVIV, and also blocks the DC component of the signal. This configuration allows the DC signal to float, and the AC signal is grounded.
  • Page 36 Section 4: Switching and software configuration Model 4200A-CVIV Multi-Switch User's Manual You can select bias tee configurations in Clarius, as shown in the following figure. The CvsT and SweepV tests in the hivcvulib user library can be used with the bias tee options. Figure 22: Bias tee configuration selection BiasT SMU CV HI and BiasT SMU CV LO The following figure shows a 4200A-CVIV bias tee high-current SMU configuration with a CV...
  • Page 37 Model 4200A-CVIV Multi-Switch User's Manual Section 4: Switching and software configuration BiasT SMU LO I CV HI and BiasT SMU LO I CV LO The following figure shows a 4200A-CVIV bias tee low-current SMU configuration with a CV HI or LO switching configuration. This combines the DC bias from a 4200-SMU, 4201-SMU, 4210-SMU, or 4211-SMU with an AC signal from CV HI or LO through the 4200A-CVIV bias tee circuit.

  • Page 38: Automate Switching Between 2-Wire And 4-Wire Mode

    Section 4: Switching and software configuration Model 4200A-CVIV Multi-Switch User's Manual Automate switching between 2-wire and 4-wire mode C-V measurements are typically performed in 4-wire mode. In 4-wire mode, each source and sense pair is terminated together as close to the device under test (DUT) as possible. The source and sense pairs are the HCUR and HPOT pair and the LCUR and LPOT pair.
  • Page 39 Model 4200A-CVIV Multi-Switch User's Manual Section 4: Switching and software configuration In 4-wire C-V mode, the source and sense pairs are independent of each other as they pass through the 4200A-CVIV. The HCUR and LCUR signals are routed directly to the source output terminal of the specified output channel.

  • Page 40: Measurement Compensation

    Section 4: Switching and software configuration Model 4200A-CVIV Multi-Switch User's Manual Measurement compensation Using the 4200A-CVIV with a 4210-CVU or 4215-CVU causes some degradation in CVU measurement accuracy. To resolve this, perform compensation with the 4200A-CVIV. You run the cvu-comp-cviv-collect action in Clarius to gather open, short, and load compensation values that you apply to CVU readings.

  • Page 41: Guidelines To Determine Required Compensation

    Model 4200A-CVIV Multi-Switch User's Manual Section 4: Switching and software configuration Guidelines to determine required compensation Use the following general guidelines to determine which compensation to do: • Open compensation: Offset compensation for small capacitances (> 1 MΩ, large impedance) •...
  • Page 42 Section 4: Switching and software configuration Model 4200A-CVIV Multi-Switch User's Manual The following figure shows the connections for 2-wire and 4-wire open compensation. In 2- wire sense mode, leave the ends of the triaxial cables disconnected. In 4-wire sense mode, connect the force and sense triaxial cables for each channel with a triaxial tee connector.
  • Page 43 Model 4200A-CVIV Multi-Switch User's Manual Section 4: Switching and software configuration The following figure shows the connections for 2-wire and 4-wire short compensation. For 2- wire, short the force leads at the test fixture or at a probe station. For 4-wire, connect the force and sense triaxial cables for each channel with a triaxial tee connector.

  • Page 44: Control The 4200A-Cviv With Clarius

    Section 4: Switching and software configuration Model 4200A-CVIV Multi-Switch User's Manual The following figure shows the connections for 2-wire and 4-wire load compensation. For 2- wire, connect the ends of the triaxial cables to the load. The load can be in a test fixture or a probe station.

  • Page 45: Cviv-Configure

    Model 4200A-CVIV Multi-Switch User's Manual Section 4: Switching and software configuration cviv-configure The cviv-configure action sets up and controls the 4200A-CVIV output channels when performing a C-V or I-V test. To use the action, add it to the project tree structure and execute it when you want to reconfigure channels.
  • Page 46 Section 4: Switching and software configuration Model 4200A-CVIV Multi-Switch User's Manual • CV Guard: The output channel is connected to the guard (outside shield) of the CVU cables. • Ground Unit: The output channel is connected to the SENSE connector of the ground unit on the 4200A-SCS.
  • Page 47 Model 4200A-CVIV Multi-Switch User's Manual Section 4: Switching and software configuration cviv-configure return values Two values are returned from cviv-configure to the Analyze sheet: • cviv_configure: A status number that indicates if the action completed with any errors. • ConstantsName: The configuration settings as a short string of text that is used when CVU compensation is performed.

  • Page 48: Cvu-Cviv-Comp-Collect

    Section 4: Switching and software configuration Model 4200A-CVIV Multi-Switch User's Manual ConstantsName: The name of the file contains the 4200A-CVIV configuration that was set in the user module. Any CVU tests run after the cviv-configure action use this file and its contents.
  • Page 49 Model 4200A-CVIV Multi-Switch User's Manual Section 4: Switching and software configuration If more than one type of compensation is selected, open compensation is done first, then short, then load. Dialog boxes prompt you to make the proper connections. For more information about compensation and the connections required for each type, see Measurement compensation (on page 4-14).
  • Page 50 Section 4: Switching and software configuration Model 4200A-CVIV Multi-Switch User's Manual Parameter Options Description Ch1_Mode Open, SMU, CV HI, CV LO, CV The instrument terminal that will be connected to the Guard, Ground Unit, AC Coup AC corresponding output channel. Ch2_Mode Gnd, BiasT: SMU CV HI, BiasT: Ch3_Mode...
  • Page 51 Model 4200A-CVIV Multi-Switch User's Manual Section 4: Switching and software configuration cvu-cviv-comp-collect return values Two values are returned from cvu-cviv-comp-collect to the Analyze sheet. The cvu_cviv_comp_collect value returns a status number that indicates how the test completed. The ConstantsName value returns a string that contains the coded configuration settings.

  • Page 52: Enable Compensation For A Test

    Section 4: Switching and software configuration Model 4200A-CVIV Multi-Switch User's Manual If you receive the -2, -150, or -169 return values, run the KCon application and select Validate. ConstantsName: This is the CVU compensation file containing open, short, and load correction values.
  • Page 53 Model 4200A-CVIV Multi-Switch User's Manual Section 4: Switching and software configuration Figure 35: Configure highlighted 4. From the Terminal Settings pane, select the type of compensation to perform. Figure 36: Enabling open compensation for the test 5. Select Run to run the test. The compensation values are applied to the measurements. 4200A-CVIV-900-01 Rev.

  • Page 54: Control The 4200A-Cviv With Lpt Commands

    Section 4: Switching and software configuration Model 4200A-CVIV Multi-Switch User's Manual Control the 4200A-CVIV with LPT commands The 4200A-CVIV can be controlled though LPT commands if you want to configure the CVIV outputs or display from a user module created with the Keithley User Library Tool (KULT). For more information on KULT, see Model 4200A-SCS KULT and KULT Extension Programming (4200A-KULT-907-01).

  • Page 55: Cviv_Config

    Model 4200A-CVIV Multi-Switch User's Manual Section 4: Switching and software configuration Example cviv_config(CVIV1, 1, KI_CVIV_SMU); This command connects channel 1 of the CVIV to a SMU. Also see clrcon (on page 4-31) cviv_display_config (on page 4-29) cviv_display_power (on page 4-30) cviv_display_config This command configures the display on the 4200A-CVIV Multi-Switch.
  • Page 56 Section 4: Switching and software configuration Model 4200A-CVIV Multi-Switch User's Manual cviv_display_power This command sets the display state of the LCD display on the 4200A-CVIV. Usage int cviv_display_power(int instr_id, int state); instr_id The instrument identification code of the 4200A-CVIV: CVIV1 state Display on: KI_CVIV_DISPLAY_ON or 1 Display off: KI_CVIV_DISPLAY_OFF or 0...

  • Page 57: Clrcon

    Model 4200A-CVIV Multi-Switch User's Manual Section 4: Switching and software configuration clrcon This command opens or de-energizes all device under test (DUT) pins and instrument matrix relays, disconnecting all crosspoint connections. Usage int clrcon(void); Details The clrcon command is called automatically by the devint, pulse_output (only for RPMs), and execut commands.

  • Page 58: In This Section

    Section 5 Typical applications In this section: Introduction ................5-1 I-V characterization on a 2-terminal device ......5-1 C-V characterization on a 2-terminal device......5-3 I-V characterization on a 3-terminal device ......5-5 C-V characterization on a 3-terminal device......5-7 I-V characterization on a 4-terminal device ......
  • Page 59 Section 5: Typical applications Model 4200A-CVIV Multi-Switch User's Manual If you are using 2-wire sense, connect a single triaxial cable to the force output connectors of channels 1 and 2 of the 4200A-CVIV to the device under test. If you are using 4-wire sense, connect two triaxial cables to the force and sense output connectors of each channel and terminate them together at the device under test.

  • Page 60: C-V Characterization On A 2-Terminal Device

    Model 4200A-CVIV Multi-Switch User's Manual Section 5: Typical applications C-V characterization on a 2-terminal device Only the 4210-CVU or 4215-CVU is necessary for C-V measurements through the 4200A-CVIV. The 2-terminal device can be connected to any two terminals on the 4200A-CVIV.
  • Page 61 Section 5: Typical applications Model 4200A-CVIV Multi-Switch User's Manual If you are using 2-wire sense, connect a single triaxial cable to the force output connector of channels 1 and 2 of the 4200A-CVIV to the device under test. If you are using 4-wire sense, connect two triaxial cables to the force and sense output connectors of each channel and terminate them together at the device under test.

  • Page 62: I-V Characterization On A 3-Terminal Device

    Model 4200A-CVIV Multi-Switch User's Manual Section 5: Typical applications I-V characterization on a 3-terminal device Three SMUs are necessary to perform an I-V characterization of a 3-terminal device. The SMUs can be installed in any channel of the 4200A-CVIV. In this example, they are in channels 1, 2 and 3.
  • Page 63 Section 5: Typical applications Model 4200A-CVIV Multi-Switch User's Manual If you are using 2-wire sense, connect a single triaxial cable to the force output connector on channels 1, 2, and 3 of the 4200A-CVIV to the device under test. If you are using 4-wire sense, connect two triaxial cables to the force and sense output connectors of each channel and terminate them together at the device under test.

  • Page 64: C-V Characterization On A 3-Terminal Device

    Model 4200A-CVIV Multi-Switch User's Manual Section 5: Typical applications C-V characterization on a 3-terminal device Only the 4210-CVU or 4215-CVU is necessary for C-V measurements through the 4200A-CVIV. The 3-terminal device can be connected to any three terminals on the 4200A-CVIV.
  • Page 65 Section 5: Typical applications Model 4200A-CVIV Multi-Switch User's Manual If you are using 2-wire sense, connect a single triaxial cable to the force output connectors of channels 1, 2, and 3 of the 4200A-CVIV to the device under test. If you are using 4-wire sense, connect two triaxial cables to the force and sense output connectors of each channel and terminate them together at the device under test.

  • Page 66: I-V Characterization On A 4-Terminal Device

    Model 4200A-CVIV Multi-Switch User's Manual Section 5: Typical applications I-V characterization on a 4-terminal device Four SMUs are necessary to perform an I-V characterization of a 4-terminal device. Using the cviv-configure action in Clarius, configure the 4200A-CVIV to the following settings: •...
  • Page 67 Section 5: Typical applications Model 4200A-CVIV Multi-Switch User's Manual If your test uses 2-wire sense, connect a single triaxial cable to the force output connector on channels 1, 2, 3, and 4 of the 4200A-CVIV to the device under test. If you are using 4- wire sense, connect two triaxial cables to the force and sense output connectors of each channel and terminate them together at the device under test.

  • Page 68: C-V Characterization On A 4-Terminal Device

    Model 4200A-CVIV Multi-Switch User's Manual Section 5: Typical applications C-V characterization on a 4-terminal device Only the 4210-CVU or 4215-CVU is necessary for C-V measurements through the 4200A-CVIV. All four output channels are used in this example. This measurement setup demonstrates how to connect multiple device terminals for a single C-V measurement by assigning them to the same C-V channel.
  • Page 69 Section 5: Typical applications Model 4200A-CVIV Multi-Switch User's Manual If using 2-wire sense, connect a single triaxial cable to the force output connector on channels 1, 2, 3, and 4 of the 4200A-CVIV to the device under test. If using 4-wire sense, connect two triaxial cables to the force and sense output connectors of each channel and terminate them together at the device under test.

  • Page 70: Use The 4200A-Cviv Multi-Switch

    Section 6 Use the 4200A-CVIV Multi-Switch In this section: Introduction ................6-1 Equipment required ..............6-1 Device connections ..............6-2 Set up the measurements in Clarius ........6-4 Introduction This section shows you how to use the 4200A-SCS and Model 4200A-CVIV Multi-Switch to perform I-V and C-V measurements on the same device without having to manually change connections to the device between tests.

  • Page 71: Device Connections

    Section 6: Use the 4200A-CVIV Multi-Switch Model 4200A-CVIV Multi-Switch User's Manual Device connections To use 4200-PA preamplifiers with the 4200A-CVIV, the preamplifiers are installed in the 4200A-CVIV chassis. If you are not using 4200-PA preamplifiers, you must install 4200A-CVIV-SPT Pass-Thru modules in the 4200A-CVIV chassis and connect them to a SMU using triaxial cables.

  • Page 72: Connection Schematic

    Model 4200A-CVIV Multi-Switch User's Manual Section 6: Use the 4200A-CVIV Multi-Switch Connection schematic Make the hardware connections from the output terminals of the 4200A-CVIV to the MOSFET, as shown in the following figure. In this example, 2-wire (local sense) measurements are made at the MOSFET, so four triaxial cables are connected from each Force output terminal of the 4200A-CVIV to the device.

  • Page 73: Set Up The Measurements In Clarius

    Section 6: Use the 4200A-CVIV Multi-Switch Model 4200A-CVIV Multi-Switch User's Manual Set up the measurements in Clarius This section describes how to set up the 4200A-CVIV to control the 4200A-CVIV to automatically switch between I-V and C-V measurements. For this example, you use Clarius to: •...

  • Page 74: Create And Rename A Project For I-V And C-V Measurements With Compensation

    Model 4200A-CVIV Multi-Switch User's Manual Section 6: Use the 4200A-CVIV Multi-Switch Create and rename a project for I-V and C-V measurements with compensation To create and rename a project for I-V and C-V measurements with compensation: 1. Choose Select. 2. In the Library, select Projects. 3.

  • Page 75: Configure The Action

    Section 6: Use the 4200A-CVIV Multi-Switch Model 4200A-CVIV Multi-Switch User's Manual Configure the action To configure the action: 1. Choose Configure. Figure 52: Configure highlighted 2. From the project tree, select the cvu-cviv-comp-collect action. Figure 53: cvu-cviv-comp-collect Action 3. From the CVIV Multi-Switch Configuration box, set CV_2W_Mode to Two Wire. The following step demonstrates how to change the 4200A-CVIV display to see which terminals correspond to which output terminal.
  • Page 76 Model 4200A-CVIV Multi-Switch User's Manual Section 6: Use the 4200A-CVIV Multi-Switch 4. In the CVIV Display Configuration box, set Ch3_TermName (Gate) to CV HI. Set the remaining channels (1, 2, and 4) to CV LO. 5. From the CVU Compensation Selections box, enable open correction by selecting Select_Open.

  • Page 77: Add A Device

    Section 6: Use the 4200A-CVIV Multi-Switch Model 4200A-CVIV Multi-Switch User's Manual Add a device To add a device: 1. Choose Select. 2. Select Devices. 3. In the Filters pane, select 4 under the Terminals column and Transistor under the Device Type column. Figure 55: Searching for a device using Filters 4.

  • Page 78: Configure The Action

    Model 4200A-CVIV Multi-Switch User's Manual Section 6: Use the 4200A-CVIV Multi-Switch Configure the action To configure the action: 1. Select Configure. Figure 56: Configure highlighted 2. In the project tree, select the cviv-configure action. 3. In the CVIV Multi-Switch Channel Config box, set all the terminals to SMU. 4.

  • Page 79: Add A Test For Making I-V Measurements

    Section 6: Use the 4200A-CVIV Multi-Switch Model 4200A-CVIV Multi-Switch User's Manual Add a test for making I-V measurements To add a test: 1. Choose Select. Figure 58: Select highlighted 2. Select Tests. 3. To find the test, type vds-id into the search bar, then select Search. 4.

  • Page 80: Add An Action For Switching The Cvu To The Output Terminals Of The 4200A-Cviv

    Model 4200A-CVIV Multi-Switch User's Manual Section 6: Use the 4200A-CVIV Multi-Switch Add an action for switching the CVU to the output terminals of the 4200A-CVIV To add an action: 1. Choose Select to return to the Library. Figure 61: Select highlighted 2.
  • Page 81 Section 6: Use the 4200A-CVIV Multi-Switch Model 4200A-CVIV Multi-Switch User's Manual 2. In the project tree, select the cviv-configure action. Figure 63: Populated cviv-configure action 3. In the CVIV Multi-Switch Channel Config box, set Ch3_Mode to CV HI and the remaining three terminals to CV LO.

  • Page 82: Add A Test For Making C-V Measurements

    Model 4200A-CVIV Multi-Switch User's Manual Section 6: Use the 4200A-CVIV Multi-Switch Add a test for making C-V measurements To add a test: 1. Choose Select. Figure 64: Select highlighted 2. Select Tests. 3. Type cv-nmosfet into the search bar, then select Search. 4.
  • Page 83 Section 6: Use the 4200A-CVIV Multi-Switch Model 4200A-CVIV Multi-Switch User's Manual Figure 67: Selected Gate terminal 7. Configure the voltage settings and test frequency as needed. 8. In the right pane, select Terminal Settings and enable Open compensation. Figure 68: Terminal Settings panel with Open compensation selected 6-14 4200A-CVIV-900-01 Rev.

  • Page 84: Run The Project And Review The Results

    Model 4200A-CVIV Multi-Switch User's Manual Section 6: Use the 4200A-CVIV Multi-Switch Run the project and review the results To run the project and review the results: 1. Select the test name at the top of the project tree. In this example, it is CVIV_COMPENSATION.

  • Page 85: Maintenance

    Section 7 Maintenance In this section: Introduction ................7-1 Cleaning the display ..............7-1 Upgrade the instrument firmware ..........7-1 Introduction The information in this section describes routine maintenance of the 4200A-CVIV instrument. Cleaning the display If you need to clean the front-PAnel LCD touchscreen display, use a soft dry cloth. Do not use liquids to clean the display.
  • Page 86 Section 7: Maintenance Model 4200A-CVIV Multi-Switch User's Manual It is strongly recommended that you connect the 4200A-SCS to an uninterruptible power supply during the firmware upgrade process. If power is lost during the firmware upgrade, the instruments may no longer be functional and will require factory service. Do not remove instrument power or disconnect any cables from the 4200A-CVIV during the firmware upgrade.
  • Page 87 Specifications are subject to change without notice. All Keithley trademarks and trade names are the property of Keithley Instruments. All other trademarks and trade names are the property of their respective companies. Keithley Instruments • 28775 Aurora Road • Cleveland, Ohio 44139 • 1-800-833-9200 • tek.com/keithley 04/2022...

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