Tektronix 4200A-CVIV Primary User

Model 4200A-CVIV
Multi-Switch

User’s Manual

4200A-CVIV-900-01 Rev. E December 2020

tek.com/keithley

*P4200A-CVIV-900-01E*

4200A-CVIV-900-01E

Multi-Switch

User's Manual

Model 4200A-CVIV

© 2020, 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. Other brand names are trademarks or registered trademarks of their respective

holders.

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Document number: 4200A-CVIV-900-01 Rev. E December 2020

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. Read and follow all installation, operation, and maintenance information carefully before using the
product. Refer to the user documentation for complete product specifications.

If the product is used in a manner not specified, the protection provided by the product warranty may be impaired.
The types of product users are:
Responsible body is the individual or group responsible for the use and maintenance of equipment, for ensuring that the

equipment is operated within its specifications and operating limits, and for ensuring that operators are adequately trained.
Operators use the product for its intended function. They must be trained in electrical safety procedures and proper use of the

instrument. They must be protected from electric shock and contact with hazardous live circuits.
Maintenance personnel perform routine procedures on the product to keep it operating properly, for example, setting the line

voltage or replacing consumable materials. Maintenance procedures are described in the user documentation. The procedures
explicitly state if the operator may perform them. Otherwise, they should be performed only by service personnel.

Service personnel are trained to work on live circuits, perform safe installations, and repair products. Only properly trained
service personnel may perform installation and service procedures.

Keithley products are designed for use with electrical signals that are measurement, control, and data I/O connections, with low
transient overvoltages, and must not be directly connected to mains voltage or to voltage sources with high transient
overvoltages. Measurement Category II (as referenced in IEC 60664) connections require protection for high transient
overvoltages often associated with local AC mains connections. Certain Keithley measuring instruments may be connected to
mains. These instruments will be marked as category II or higher.

Unless explicitly allowed in the specifications, operating manual, and instrument labels, do not connect any instrument to mains.
Exercise extreme caution when a shock hazard is present. Lethal voltage may be present on cable connector jacks or test

fixtures. The American National Standards Institute (ANSI) states that a shock hazard exists when voltage levels greater than
30 V RMS, 42.4 V peak, or 60 VDC are present. A good safety practice is to expect that hazardous voltage is present in any
unknown circuit before measuring.

Operators of this product must be protected from electric shock at all times. The responsible body must ensure that operators
are prevented access and/or insulated from every connection point. In some cases, connections must be exposed to potential
human contact. Product operators in these circumstances must be trained to protect themselves from the risk of electric shock. If
the circuit is capable of operating at or above 1000 V, no conductive part of the circuit may be exposed.

Do not connect switching cards directly to unlimited power circuits. They are intended to be used with impedance-limited
sources. NEVER connect switching cards directly to AC mains. When connecting sources to switching cards, install protective
devices to limit fault current and voltage to the card.

Before operating an instrument, ensure that the line cord is connected to a properly-grounded power receptacle. Inspect the
connecting cables, test leads, and jumpers for possible wear, cracks, or breaks before each use.

When installing equipment where access to the main power cord is restricted, such as rack mounting, a separate main input
power disconnect device must be provided in close proximity to the equipment and within easy reach of the operator.

For maximum safety, do not touch the product, test cables, or any other instruments while power is applied to the circuit under
test. ALWAYS remove power from the entire test system and discharge any capacitors before: connecting or disconnecting
cables or jumpers, installing or removing switching cards, or making internal changes, such as installing or removing jumpers.

Do not touch any object that could provide a current path to the common side of the circuit under test or power line (earth)
ground. Always make measurements with dry hands while standing on a dry, insulated surface capable of withstanding the
voltage being measured.

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.

When fuses are used in a product, replace with the same type and rating for continued protection against fire hazard.
Chassis connections must only be used as shield connections for measuring circuits, NOT as protective earth (safety ground)

connections.
If you are using a test fixture, keep the lid closed while power is applied to the device under test. Safe operation requires the use

of a lid interlock.

If a screw is present, connect it to protective earth (safety ground) using the wire recommended in the user documentation.

The symbol on an instrument means caution, risk of hazard. The user must refer to the operating instructions located in the
user documentation in all cases where the symbol is marked on the instrument.

The symbol on an instrument means warning, risk of electric shock. Use standard safety precautions to avoid personal
contact with these voltages.

The symbol on an instrument shows that the surface may be hot. Avoid personal contact to prevent burns.

The symbol indicates a connection terminal to the equipment frame.

If this symbol is on a product, it indicates that mercury is present in the display lamp. Please note that the lamp must be
properly disposed of according to federal, state, and local laws.

The WARNING heading in the user documentation explains hazards that might result in personal injury or death. Always read
the associated information very carefully before performing the indicated procedure.

The CAUTION heading in the user documentation explains hazards that could damage the instrument. Such damage may
invalidate the warranty.

The CAUTION heading with the symbol in the user documentation explains hazards that could result in moderate or minor
injury or damage the instrument. Always read the associated information very carefully before performing the indicated
procedure. Damage to the instrument may invalidate the warranty.

Instrumentation and accessories shall not be connected to humans.
Before performing any maintenance, disconnect the line cord and all test cables.
To maintain protection from electric shock and fire, replacement components in mains circuits — including the power

transformer, test leads, and input jacks — must be purchased from Keithley. Standard fuses with applicable national safety
approvals may be used if the rating and type are the same. The detachable mains power cord provided with the instrument may
only be replaced with a similarly rated power cord. Other components that are not safety-related may be purchased from other
suppliers as long as they are equivalent to the original component (note that selected parts should be purchased only through
Keithley to maintain accuracy and functionality of the product). If you are unsure about the applicability of a replacement
component, call a Keithley office for information.

Unless otherwise noted in product-specific literature, Keithley instruments are designed to operate indoors only, in the following
environment: Altitude at or below 2,000 m (6,562 ft); temperature 0 °C to 50 °C (32 °F to 122 °F); and pollution degree 1 or 2.

To clean an instrument, use a cloth dampened with deionized water or mild, water-based cleaner. Clean the exterior of the
instrument only. Do not apply cleaner directly to the instrument or allow liquids to enter or spill on the instrument. Products that
consist of a circuit board with no case or chassis (e.g., a data acquisition board for installation into a computer) should never
require cleaning if handled according to instructions. If the board becomes contaminated and operation is affected, the board
should be returned to the factory for proper cleaning/servicing.

Safety precaution revision as of June 2017.

Introduction .............................................................................................................. 1-1

Introduction .......................................................................................................................... 1-1

Extended warranty ............................................................................................................... 1-2

Contact information .............................................................................................................. 1-2

General ratings ..................................................................................................................... 1-2

Specifications ....................................................................................................................... 1-3

Unpack and inspect the instrument ...................................................................................... 1-3

Hardware and software requirements .................................................................................. 1-4

Getting started ......................................................................................................... 2-1

Introduction .......................................................................................................................... 2-1

DUT connections panel summary ........................................................................................ 2-2

DUT channel connections ................................................................ ......................................... 2-2

Ground connections .................................................................................................................. 2-3

Inputs panel summary .......................................................................................................... 2-3

Connections .............................................................................................................................. 2-5

Display summary .................................................................................................................. 2-6

Install and configure the 4200A-CVIV ..................................................................... 3-1

Introduction .......................................................................................................................... 3-1

Mechanical dimensions ........................................................................................................ 3-1

Location considerations ....................................................................................................... 3-2

Connect to protective earth .................................................................................................. 3-3

Install and remove preamplifier and pass-thru modules ...................................................... 3-4

Install and remove channel blockers .................................................................................... 3-7

Mount the 4200A-CVIV ........................................................................................................ 3-9

Configure the 4200A-CVIV with KCon ............................................................................... 3-10

Switching and software configuration .................................................................... 4-1

Introduction .......................................................................................................................... 4-1

4200A-CVIV switching ......................................................................................................... 4-2

Open ......................................................................................................................................... 4-4

SMU switching .......................................................................................................................... 4-4

CV HI switching ......................................................................................................................... 4-5

CV LO switching ........................................................................................................................ 4-6

CV Guard switching .................................................................................................................. 4-7

Ground unit switching ................................................................................................................ 4-8

AC coupled AC ground configuration ........................................................................................ 4-9

Bias tee switching ..................................................................................................................... 4-9

Bias tee SMU AC ground ........................................................................................................ 4-11

Table of contents

Table of contents Model 4200A-CVIV Multi-Switch User's Manual

Automate switching between 2-wire and 4-wire mode ............................................................ 4-12

Measurement compensation .............................................................................................. 4-13

CVU compensation ................................................................................................................. 4-14

Model 4200A-CVIV compensation connections ...................................................................... 4-15

Control the Model 4200A-CVIV with Clarius ...................................................................... 4-17

cviv-configure .......................................................................................................................... 4-18

cvu-cviv-comp-collect .............................................................................................................. 4-22

Enable compensation for a test ............................................................................................... 4-25

Control the 4200A-CVIV with LPT commands ................................................................... 4-27

cviv_config .............................................................................................................................. 4-27

cviv_display_config ................................................................................................................. 4-28

cviv_display_power ................................................................................................................. 4-29

Typical applications ................................................................................................. 5-1

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.......................................................................... 5-9

C-V characterization on a 4-terminal device ...................................................................... 5-11

Use the 4200A-CVIV Multi-Switch ........................................................................... 6-1

Introduction .......................................................................................................................... 6-1

Equipment required .............................................................................................................. 6-2

Device connections .............................................................................................................. 6-2

Connection schematic ............................................................................................................... 6-3

Set up the measurements in Clarius .................................................................................... 6-4

Create and rename a project for I-V and C-V measurements with compensation ..................... 6-5

Add an action to perform CVU compensation ........................................................................... 6-6

Configure the action .................................................................................................................. 6-6

Add a device ............................................................................................................................. 6-9

Add an action for switching the SMUs to the device ................................................................. 6-9

Configure the action ................................................................................................................ 6-10

Add a test for making I-V measurements ................................................................................ 6-11

Add an action for switching the CVU to the output terminals of the 4200A-CVIV .................... 6-12

Configure the action ................................................................................................................ 6-13

Add a test for making C-V measurements .............................................................................. 6-14

Run the project and review the results .................................................................................... 6-16

Maintenance ................................ ............................................................................. 7-1

Introduction .......................................................................................................................... 7-1

Cleaning the display ............................................................................................................. 7-1

Upgrade the instrument firmware ......................................................................................... 7-2

In this section:

Introduction ...............................................................................1-1

Extended warranty ....................................................................1-2

Contact information ...................................................................1-2

General ratings .........................................................................1-2

Specifications ............................................................................1-3

Unpack and inspect the instrument ...........................................1-3

Hardware and software requirements .......................................1-4

Introduction

The Keithley Instruments Model 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 4215­CVU to any of the four output terminals. This accessory creates a faster and more efficient device
testing workflow for any application that requires I-V and C-V measurements on the same device.

Figure 1: Keithley Instruments Model 4200A-CVIV Multi-Switch

Section 1

Introduction

Section 1: Introduction Model 4200A-CVIV Multi-Switch User's Manual

1-2 4200A-CVIV-900-01 Rev. E December 2020

The built-in display provides clear, real-time test information near the DUT. You can personalize the
output naming convention with the Clarius software, rotate to match your testing environment, and
turn off the display to reduce light near the DUT.

Extended warranty

Additional years of warranty coverage are available on many products. These valuable contracts
protect you from unbudgeted service expenses and provide additional years of protection at a fraction
of the price of a repair. Extended warranties are available on new and existing products. Contact your
local Keithley Instruments office, sales partner, or distributor for details.

Contact information

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
contact numbers, visit tek.com/contact-us.

General ratings

The 4200A-CVIV instrument's general ratings and connections are listed in the following table.

Category

Specification

Voltage rating

210 V

Current rating

1 A

Input and output connections

See DUT connections panel summary (on page 2-2) and Inputs panel

summary (on page 2-3)

Environmental conditions

For indoor use only

Temperature range:
Operating: 10 °C to 40 °C
Storage: −15 °C to 60 °C

Humidity range:
Operating: 5% to 80% relative humidity, noncondensing
Storage: 5% to 90% relative humidity, noncondensing

Altitude:
Operating: 0 to 2000 m (0 to 6252 ft)
Storage: 0 to 4600 m (0 to 15092 ft)

Pollution degree: 1 or 2

Model 4200A-CVIV Multi-Switch User's Manual Section 1: Introduction

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Specifications

For instrument specifications, search for the 4200A-SCS Parameter Analyzer Datasheet on the

Keithley Instruments website (tek.com/keithley).

Unpack and inspect the instrument

To unpack and inspect the instrument:

1. Inspect the box for damage.

2. Open the top of the box.

3. Remove the accessories and verify that all items are included. You should have received:

▪ Two 4200A-CVIV-SPT SMU Pass-Thru modules
▪ Two channel blockers
▪ Two safety ground cables
▪ One USB cable
▪ One mini ultra-low-noise triaxial cable, 2 m (6.6 ft)

4. Remove the packaging insert.

5. Remove the 4200A-CVIV from the box.

Do not use the front bezel to lift the 4200A-CVIV. Using the front bezel can cause damage to
the instrument.

6. Inspect the instrument for any obvious signs of physical damage.

7. Report any damage to the shipping agent immediately.

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Hardware and software requirements

The following are required to use the 4200A-CVIV.

• Keithley Instruments 4200A-SCS Parameter Analyzer running the latest software release

• For 2-wire measurements, one 4200-TRX-0.75 or CA-534-24B triaxial cable per channel

• For 4-wire measurements, two 4200-TRX-0.75 or CA-534-24B triaxial cables per channel

• One 4210-CVU or 4215-CVU

• Up to four 4200-SMUs, 4201-SMUs, 4210-SMUs, or 4211-SMUs each, with either 4200-PA

Remote Preamplifiers or 4200A-CVIV-SPT SMU Pass-Thru Modules

For each SMU connected to the 4200A-CVIV, you must also install at least one 4200-PA or
4200A-CVIV-SPT Pass-Thru module.

In this section:

Introduction ...............................................................................2-1

DUT connections panel summary .............................................2-2

Inputs panel summary ...............................................................2-3

Display summary ......................................................................2-6

Introduction

This section provides an overview of the 4200A-CVIV display and connectors.

Section 2

Getting started

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DUT connections panel summary

Device connections are made to the device under test (DUT) instrument panel of the 4200A-CVIV.
The DUT panel of the 4200A-CVIV is shown below. Descriptions of the connections are provided

after the figure.

Figure 2: 4200A-CVIV DUT panel

DUT channel connections

DUT channel
connections

Triaxial force and sense connectors are
provided on channels 1 through 4 for
connection to a DUT.

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Ground connections

Ground
connections

Two ground screws are provided for connections to protective earth
(safety ground).

Inputs panel summary

Instruments are connected to the inputs panel of the 4200A-CVIV.
The inputs panel of the 4200A-CVIV is shown below. No preamplifer or pass-through modules are

installed in this figure. Descriptions of the connections are provided after the figure.

GNDU SENSE is available with 4200A-CVIV hardware versions 2.0 or newer.

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Each SMU input that is not in use must have its access restricted by an included channel
blocker. Refer to the Installing and removing channel blockers (on page 3-7) topic for more
information.

Figure 3: 4200A-CVIV inputs panel (SMU inputs empty)

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Connections

HCUR CVU input

The HCUR (force HI) CVU input is a female SMA
connector that you use to connect to the
4210-CVU or 4215-CVU.

HPOT CVU input

The HPOT (sense HI) CVU input is a female SMA
connector that you use to connect to the
4210-CVU or 4215-CVU.

LPOT CVU input

The LPOT (sense LO) CVU input is a female SMA
connector that you use to connect to the
4210-CVU or 4215-CVU.

LCUR CVU input

The LCUR (force LO) CVU input is a female SMA
connector that you use to connect to the
4210-CVU or 4215-CVU.

GNDU SENSE
input

The GNDU SENSE input is a female miniature
triaxial connector that you use to connect to the
triaxial SENSE connector of the ground unit on
the 4200A-SCS. This input is only available with
4200A-CVIV hardware versions 2.0 and newer.

SMU inputs
(4200A-CVIV-SPT
SMU Pass-Thru
installed)

The 4200A-CVIV-SPT SMU Pass-Thru module
can be installed in any bay of the 4200A-CVIV.
The triaxial connectors provide a direct interface
with your SMU.

SMU inputs (4200­PA Remote
Preamplifier
installed)

The 4200-PA Remote Preamplifier can be
installed in any bay of the 4200A-CVIV. The
preamplifier's serial interface provides a
connection with a 4200-SMU, 4201-SMU, 4210­SMU, or 4211-SMU installed in the 4200A-SCS.

USB input

A USB-B port is provided to connect to your
4200A-SCS. The port provides both data and
power to the 4200A-CVIV.

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Display summary

Figure 4: 4200A-CVIV front display panel

The 4200A-CVIV features a full-color LCD display that illustrates the name of your test, the name of
the device under test (DUT), the instrument configuration for each channel, and a 2-wire or 4-wire
indicator.

You can turn the display on or off with the DISPLAY ON/OFF button. Press the ROTATE button to
orient the display for your test station configuration.

When you reset the 4200A-CVIV, the instrument returns to the default Open state. Any terminal
setting names are removed (see the following figure) and replaced with "Open."

Model 4200A-CVIV Multi-Switch User's Manual Section 2: Getting started

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Figure 5: Default state display of the 4200A-CVIV

In this section:

Introduction ...............................................................................3-1

Mechanical dimensions .............................................................3-1

Location considerations ............................................................3-2

Connect to protective earth .......................................................3-3

Install and remove preamplifier and pass-thru modules ............3-4

Install and remove channel blockers .........................................3-7

Mount the 4200A-CVIV .............................................................3-9

Configure the 4200A-CVIV with KCon ....................................3-10

Introduction

The 4200A-CVIV can be quickly installed and configured for a variety of testing scenarios. This
section contains information on locating and mounting the instrument, safety grounding, using the
instrument with preamplifier modules, and configuration of the instrument using the Keithley
Instruments Configuration Utility (KCon).

Mechanical dimensions

Figure 6: 4200A-CVIV mechanical dimensions, bumpers installed

Section 3

Install and configure the 4200A-CVIV

Section 3: Install and configure the 4200A-CVIV Model 4200A-CVIV Multi-Switch User's Manual

3-2 4200A-CVIV-900-01 Rev. E December 2020

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.

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4200A-CVIV-900-01 Rev. E December 2020 3-3

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). Failure to attach the ground wires independently to a known protective earth may
result in personal injury or death due to electric shock.

1. Connect both of the supplied grounding cables to the two grounding terminals of the 4200A-CVIV.

Figure 8: Connecting ground cables to the 4200A-CVIV

2. Connect the ends of the grounding cables to the two independent protective earth (safety ground)
terminals.

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Install and remove preamplifier and pass-thru modules

You can install up to four Keithley Instruments 4200-PA Remote Preamplifiers or 4200A-CVIV-SPT
SMU Pass-Thru modules (see 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-through modules are properly aligned when they are
inserted into the SMU input slots of the 4200A-CVIV. Additionally, be sure to install a channel blocker
in each slot that is not in use (see the WARNING below and the Install and remove channel blockers
(on page 3-7) topic for more information).

Each SMU input on the 4200A-CVIV that is not in use must have its access restricted by an
included channel blocker. Failure to use a channel blocker may result in personal injury or
death due to electric shock.

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To install a preamplifier or pass-through module:

1. Disconnect any cables from the instrument before installing a module.

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 module door to the
instrument.

4. Completely remove the module door and set it aside.

5. Align the module with the alignment rails of a vacant SMU input bay.

6. Firmly insert the module into the instrument until it is seated. Use the following graphics as a
guide.

Figure 10: Correct alignment (left) and fully seated module

Do not use excessive force when installing the preamplifier and pass-thru modules. The
modules are designed to fit securely, but extreme pressure may cause damage to the
modules or the instrument. Always verify the alignment of the module before inserting it into
the 4200A-CVIV.

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7. Place channel blockers into any SMU input slots without a module. See the Install and remove

channel blockers (on page 3-7) topic for installation information.

8. Reinstall the module door.

9. Finger-tighten the captive screws on the module door, or use a screwdriver. Do not overtighten.

Reinstall the protective rubber bumper. A 4200A-CVIV with a pass-thru module installed in SMU slot
4 and a preamplifier in slot 3 is shown in the following graphic. Channel blockers are not installed in
this graphic.

Figure 11: 4200A-CVIV input panel

To remove a preamplifier or pass-through module:

1. Disconnect any cables from the instrument before installing a module.

2. Remove the rubber bumper from the SMU inputs side of the 4200A-CVIV.

3. Loosen the two captive screws securing the module door to the instrument.

4. Completely remove the module door and set it aside.

5. Grasp the module and pull it straight out of the 4200A-CVIV.

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4200A-CVIV-900-01 Rev. E December 2020 3-7

Do not twist the module when removing it from the instrument. Do not use implements to
grasp the triaxial connectors of the pass-through or the serial connector of the preamplifier.

6. Place channel blockers into any SMU input bays without a module. See the Install and remove

channel blockers (on page 3-7) topic for more information.

7. Reinstall the module door.

8. Finger-tighten the captive screws on the module door, or use a Phillips screwdriver. Do not
overtighten.

Install and remove channel blockers

Each SMU input on the 4200A-CVIV that is not in use must have its access restricted by an
included channel blocker. Failure to use a channel blocker may result in personal injury or
death due to electric shock.

The 4200A-CVIV is shipped with two protective channel blockers. You must install a blocker in each
SMU input module location that is not occupied with a 4200-PA Remote Preamplifier or
4200A-CVIV-SPT SMU Pass-Thru Module. The 4200A-CVIV input panel cover and channel blockers
are shown in the following figure.

Figure 12: 4200A-CVIV input panel cover and channel blockers

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3-8 4200A-CVIV-900-01 Rev. E December 2020

To install a channel blocker:

1. For the vacant channel, place a channel blocker into the opening, smooth side facing out.

2. Press down on the blocker firmly until you hear an audible click. The blocker is now positioned
correctly.

You may need to slightly press one of the tabs on the edge of the blocker flange before it seats flush
with the front of the 4200A-CVIV input panel (see the following figure).

Figure 13: 4200A-CVIV input panel cover with channel blockers installed

To remove a channel blocker:

On the rear of the panel cover, press one of the tabs on the inside edge of the blocker flange while
pushing out. The blocker can now be removed.

To prevent damage to the channel blocker or the input panel, do not use excessive pressure
when removing the channel blocker.

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Mount the 4200A-CVIV

The 4200A-CVIV can be mounted to a flat surface with four #4 screws. Threaded mounting holes are
on the top, bottom, and rear panels of the instrument.

Be sure to consider your test station layout, ground cable layout, and other cable routing before
mounting the instrument.

Figure 14: 4200A-CVIV mounting dimensions