Tektronix KPXI 3U Instrument Chassis User's Manual Primary User

www.keithley.com

KPXI 3U Instrument Chassis

User’s Manual

KPXI-SYS-900-01 Rev. A / January 2007

A GREATER MEASURE OF CONFIDENCE

ECA 42912

WARRANTY

Keithley Instruments, Inc. warrants this product to be free from defects in material and workmanship for a period of
1 year from date of shipment.

Keithley Instruments, Inc. warrants the following items for 90 days from the date of shipment: probes, cables,
rechargeable batteries, diskettes, and documentation.

During the warranty period, we will, at our option, either repair or replace any product that proves to be defective.

To exercise this warranty, write or call your local Keithley Instruments representative, or contact
Keithley Instruments headquarters in Cleveland, Ohio. You will be given prompt assistance and return instructions.
Send the product, transportation prepaid, to the indicated service facility. Repairs will be made and the product
returned, transportation prepaid. Repaired or replaced products are warranted for the balance of the original
warranty period, or at least 90 days.

LIMITATION OF WARRANTY

This warranty does not apply to defects resulting from product modification without Keithley Instruments’ express
written consent, or misuse of any product or part. This warranty also does not apply to fuses, software,
non-rechargeable batteries, damage from battery leakage, or problems arising from normal wear or failure to follow
instructions.

THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING ANY
IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. THE REMEDIES
PROVIDED HEREIN ARE BUYER’S SOLE AND EXCLUSIVE REMEDIES.

NEITHER KEITHLEY INSTRUMENTS, INC. NOR ANY OF ITS EMPLOYEES SHALL BE LIABLE FOR ANY
DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF
ITS INSTRUMENTS AND SOFTWARE EVEN IF KEITHLEY INSTRUMENTS, INC., HAS BEEN ADVISED IN
ADVANCE OF THE POSSIBILITY OF SUCH DAMAGES. SUCH EXCLUDED DAMAGES SHALL INCLUDE, BUT
ARE NOT LIMITED TO: COSTS OF REMOVAL AND INSTALLATION, LOSSES SUSTAINED AS THE RESULT
OF INJURY TO ANY PERSON, OR DAMAGE TO PROPERTY.

A G R E A T E R M E A S U R E O F C O N F I D E N C E

Keithley Instruments, Inc.

Corporate Headquarters • 28775 Aurora Road • Cleveland, Ohio 44139

440-248-0400 • Fax: [phone] • 1-888-KEITHLEY (534-8453) • www.keithley.com

12/06

KPXI

3U Instrument Chassis

User’s Manual

©2007, Keithley Instruments, Inc.

Document Number:

All rights reserved.

Cleveland, Ohio, U.S.A.

-SYS-900-01 Rev. A / January 2007

KPXI

Manual Print History KPXI 3U Instrument Chassis User’s Manual

Manual Print History

The print history shown below lists the printing dates of all Revisions and Addenda created for this
manual. The Revision Level letter increases alphabetically as the manual undergoes subsequent
updates. Addenda, which are released between Revisions, contain important change information that
the user should incorporate immediately into the manual. Addenda are numbered sequentially. When a
new Revision is created, all Addenda associated with the previous Revision of the manual are
incorporated into the new Revision of the manual. Each new Revision includes a revised copy of this
print history page.

Revision A (Document Number KPXI-SYS-900-01) ........................................... January 2007

All Keithley Instruments product names are trademarks or registered trademarks of Keithley Instruments, Inc.
Other brand names are trademarks or registered trademarks of their respective holders.

KPXI-SYS-900-01 Rev. A / January 2007

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 non
conditions may be present.

This product is intended for use by qualified 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 manual for complete product specifications.

If the product is used in a manner not specified, the protection provided by the product 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 manual. The procedures explicitly state
if the operator may perform them. Otherwise, they should be performed only by service personnel.

-hazardous voltages, there are situations where hazardous

Safety Precautions

Service personnel are trained to work on live circuits, and perform safe installations and repairs of products. Only properly

trained service personnel may perform installation and service procedures.

Keithley Instruments products are designed for use with electrical signals that are rated Measurement Category I and
Measurement Category II, as described in the International Electrotechnical Commission (IEC) Standard IEC 60664. Most
measurement, control, and data I/O signals are Measurement Category I and must not be directly connected to mains voltage or
to voltage sources with high transient over
over-voltages often associated with local AC mains connections. Assume all measurement, control, and data I/O connections
are for connection to Category I sources unless otherwise marked or described in the Manual.

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
30V RMS, 42.4V peak, or 60VDC 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 volts, 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, make sure 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.

-voltages. Measurement Category II connections require protection for high transient

12/06

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.

The instrument and accessories must be used in accordance with its specifications and operating instructions or the safety of the
equipment may be impaired.

Do not exceed the maximum signal levels of the instruments and accessories, as defined in the specifications and operating
information, and as shown on the instrument or test fixture panels, or switching card.

When fuses are used in a product, replace with same type and rating for continued protection against fire hazard.

Chassis connections must only be used as shield connections for measuring circuits, NOT as safety earth 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 safety earth ground using the wire recommended in the user documentation.

!

The symbol on an instrument indicates that the user should refer to the operating instructions located in the manual.

The symbol on an instrument shows that it can source or measure 1000 volts or more, including the combined effect of
normal and common mode voltages. 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.

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

The CAUTION heading in a manual explains hazards that could damage the instrument. Such damage 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 Instruments. Standard fuses, with applicable national safety
approvals, may be used if the rating and type are the same. 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 Instruments to maintain accuracy and functionality of the product.) If you are unsure about the applicability of a
replacement component, call a Keithley Instruments office for information.

To clean an instrument, use a damp cloth 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., 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.

Table of Contents

Section Topic Page

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

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

KPXI-SYS-18-460X2............................................................................ 1-2

KPXI-SYS-14-500 ................................................................................ 1-2

KPXI-SYS-8-400 .................................................................................. 1-2

KPXI-SYS-6-250 .................................................................................. 1-3

Features...................................................................................................... 1-3

Safety symbols and terms .......................................................................... 1-4

Specifications.............................................................................................. 1-4

Unpacking and inspection........................................................................... 1-5

Inspection for damage.......................................................................... 1-5

Shipment contents ............................................................................... 1-5

Instruction manual................................................................................ 1-5

Repacking for shipment........................................................................ 1-5

2 Installation............................................................................................... 2-1

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

Power considerations ................................................................................. 2-2

Installation................................................................................................... 2-2

KPXI-SYS-18-460X2 , KPXI-SYS-8-400, and KPXI-SYS-14-500........ 2-2

KPXI-SYS-6-250 (6 slot chassis) ......................................................... 2-3

System monitoring...................................................................................... 2-3

Rack Mounting............................................................................................ 2-4

3 Backplane Overview ............................................................................. 3-1

Introduction ................................................................................................. 3-2

System controller slot........................................................................... 3-2

Local bus.............................................................................................. 3-2

KPXI-SYS-18-460X2 .................................................................................. 3-2

Star trigger slot ..................................................................................... 3-2

Peripheral slots..................................................................................... 3-2

Trigger bus ........................................................................................... 3-2

System reference clock ........................................................................ 3-3

KPXI-SYS-14-500....................................................................................... 3-4

Star trigger slot ..................................................................................... 3-4

Peripheral slots..................................................................................... 3-4

Trigger bus ........................................................................................... 3-4

System reference clock ........................................................................ 3-4

KPXI-SYS-8-400......................................................................................... 3-4

Star trigger slot ..................................................................................... 3-4

Peripheral slots..................................................................................... 3-4

Trigger bus ........................................................................................... 3-4

System reference clock ........................................................................ 3-5

KPXI-SYS-6-250......................................................................................... 3-5

Star trigger slot ..................................................................................... 3-5

Peripheral slots..................................................................................... 3-5

Trigger bus ........................................................................................... 3-6

System reference clock ........................................................................ 3-6

Table of Contents KPXI 3U Instrument Chassis User’s Manual

Section Topic Page

4 Troubleshooting and Maintenance .................................................... 4-1

Introduction ................................................................................................. 4-2

Troubleshooting and maintenance .............................................................. 4-2

Temperature detection .......................................................................... 4-2

Fan hot-swap replacement ................................................................... 4-2

Power supply unit hot-swap replacement............................................. 4-2

Service Form

ii KPXI-SYS-900-01 Rev. A / January 2007

List of Figures

Section Figure Title Page

3 Figure 3-1 KPXI-SYS-18-460X2 PXI Local Bus and Star Trigger Routing...... 3-3

Figure 3-2 KPXI-SYS-8-400 PXI Local Bus and Star Trigger Routing ............ 3-5

Figure 3-3 KPXI-SYS-6-250 PXI local bus and star trigger routing................. 3-6

List of Figures KPXI 3U Instrument Chassis User’s Manual

This page left blank intentionally.

iv KPXI-SYS-900-01 Rev. A / January 2007

List of Tables

Section Table Title Page

1 Table 1-1 Features......................................................................................... 1-3

2 Table 2-1 System Monitoring ......................................................................... 2-3

4 Table 4-1 Troubleshooting power failure........................................................ 4-2