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: 440-248-6168 • 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
List of Tables KPXI 3U Instrument Chassis User’s Manual
This page left blank intentionally.
vi KPXI-SYS-900-01 Rev. A / January 2007
In this section:
Top ic Pa ge
Introduction......................................................................................... 1-2
Features ............................................................................................... 1-3
Safety symbols and terms .............................................................. 1-4
Unpacking and inspection .............................................................. 1-5
Section 1
Introduction
KPXI-SYS-18-460X2 ........................................................................ 1-2
KPXI-SYS-14-500............................................................................. 1-2
KPXI-SYS-8-400............................................................................... 1-2
KPXI-SYS-6-250............................................................................... 1-3
Inspection for damage ...................................................................... 1-5
Shipment contents............................................................................ 1-5
Instruction manual ............................................................................ 1-5
Repacking for shipment.................................................................... 1-5
Section 1: Introduction KPXI 3U Instrument Chassis User’s Manual
Introduction
Keithley Instruments KPXI-SYS series 3U PXI Instrument Chassis provide one system slot as well
as multiple peripheral slots in a system. The number of slots provided is model dependent (see
Features). Each model in the KPXI-SYS series 3U PXI Instrument Chassis is also equipped with a
power supply. Refer to the following for an overview of each chassis model.
KPXI-SYS-18-460X2
Model KPXI-SYS-18-460X2 is an 18-slot PXI chassis providing 17 PXI peripheral expansion slots
and one system slot with two PXI-to-PXI bridges. The chassis incorporates all features defined by
the PXI and CompactPCI specifications. Both PXI and CompactPCI modules can be used in the
chassis. An internal 10MHz reference clock is available on all 17 PXI slots. The PXI trigger bus is
divided into three segments. Star trigger signals are available on slots 3 through 15.
The Model KPXI-SYS-18-460X2 is equipped with 460W + 460W redundant power units to provide
reliable and easy to maintain power to the system. The status of system power supply,
temperature, and cooling fans are monitored by the alarm module in the chassis. Once a failure is
detected, a LED and buzzer will be actuated. The failure fans can be removed from the front panel
and hot-swapped, reducing MTTR (Mean-Time-To-Repair).
The Model KPXI-CON controllers are designed specifically with the KPXI-SYS-18-460X2 in mind.
With all the powerful and convenient design, the Model KPXI-SYS-18-460X2 chassis is ideal for
high performance applications and a large number of I/O modules.
KPXI-SYS-14-500
The KPXI-SYS-14-500 is a 19” 3U PXI chassis providing 13 PXI peripheral slots and one system
slot with one PXI-to-PXI bridge. The KPXI-SYS-14-500 is compliant with PXI and CompactPCI
specifications and supports both PXI and CompactPCI modules. The internal 10MHz reference
clock is available on all 13 PXI slots and the PXI trigger bus is divided into two segments with each
segment consisting of 7 slots. Star trigger signals are available on slots 3 through 13. The
KPXI-SYS-14-500 is equipped with a 500W ATX power supply to provide reliable power to the
system. The status of system power supply, temperature, and cooling fans are monitored by an
alarm module built in to the chassis. When any cooling fan fails, a LED and buzzer will be
actuated. The malfunctioning fan is hot-swappable and can be removed from the front panel. The
KPXI-SYS-14-500 chassis also features a compact mechanical design, which makes it shallow
enough for easy cable routing while allowing air flow in the rear of the rack.
The Model KPXI-CON controllers are designed specifically with the KPXI-SYS-14-500 in mind.
With its powerful design, the KPXI-SYS-14-500 chassis is ideal for measurement and automation
applications.
KPXI-SYS-8-400
The Model KPXI-SYS-8-400 is a 19" 3U PXI chassis providing 7 PXI peripheral slots in a system.
These chassis are compliant with PXI and CompactPCI specifications. Both PXI and CompactPCI
modules can be used in the chassis. Compliant with PXI specifications, the internal 10MHz
reference clock is available on all of the 7 PXI slots, as well as the star trigger functions, PXI trigger
bus, and PXI local bus.
The Model KPXI-SYS-8-400 is equipped with an industrial grade 400W ATX power supply to
provide reliable and cost effective power to the system. The status of system power supply,
temperature, and cooling fans are monitored by the alarm module assembled in the chassis. Once
a failure is detected, a LED and buzzer will be actuated. The failure fans can be removed from the
front panel and are hot-swappable, which effectively reduces MTTR (Mean-Time-To-Repair).
1-2 Return to Section Topics KPXI-SYS-900-01 Rev. A / January 2007
KPXI 3U Instrument Chassis User’s Manual Section 1: Introduction
The Model KPXI-CON controllers are designed specifically with the Model KPXI-SYS-8-400 in
mind. With its powerful design, the Model KPXI-SYS-8-400 chassis is ideal for high performance
and medium size applications.
KPXI-SYS-6-250
The Model KPXI-SYS-6-250 is a 3U 6-slot half-rack PXI chassis that provides one slot for a
system controller and 5 slots for PXI peripherals. Both PXI and CompactPCI modules can be used
in this chassis. The internal 10MHz reference clock is available on all of the 5 peripheral slots, as
well as the star trigger functions, PXI trigger bus, and PXI local bus.
The Model KPXI-SYS-6-250 chassis is equipped with an industrial-grade 250W CompactPCI
power supply to provide reliable power to the whole system.
The Model KPXI-CON controllers are designed specifically with the KPXI-SYS-14-500 in mind.
Carry handles and rack mount brackets are included. The Model KPXI-SYS-6-250 is an ideal
chassis for small, high performance applications.
Features
The Keithley Instruments KPXI-SYS series 3U PXI Instrument Chassis’ features are provided in
the
Table 1-1.
Table 1-1
Features
Model Features Power supply
• 460W+460W redundant
power supply with universal
input
• 500W ATX power supply
KPXI-SYS-18-460X2
KPXI-SYS-14-500
• Accepts both 3U PXI and CompactPCI
modules
• One system slot and 17 PXI/CompactPCI
peripheral slots
• PXI specifications Rev. 2.0 compliant
• IEEE 1101.10 mechanical packaging
compliant
• Filtered, forced
• Temperature, voltage and fan monitoring LED
• 4U high rackmount and bench top installation
• Two PXI
• Accepts both 3U PXI and CompactPCI
modules
• One system slot and 13 PXI/CompactPCI
peripheral slots
• PXI specifications Rev. 2.2 compliant
• IEEE 1101.10 mechanical packaging
compliant
• Filtered, forced
• Temperature, voltage and fan monitoring LED
• 4U high rackmount and bench top installation
• Removable Fan
• Temperature, Voltage, and Fan Monitoring
LED
-air cooling
-to-PXI bridges
-air cooling
KPXI-SYS-900-01 Rev. A / January 2007 Return to Section Topics 1-3
Section 1: Introduction KPXI 3U Instrument Chassis User’s Manual
Table 1-1 (continued)
Features
Model Features Power supply
KPXI-SYS-8-400
KPXI-SYS-6-250
• Accepts both 3U PXI and CompactPCI
modules
• One system slot and 7 PXI/CompactPCI
peripheral slots
• PXI specifications Rev. 2.0 compliant
• IEEE 1101.10 mechanical packaging
compliant
• Filtered, forced
• Temperature, voltage, and fan monitoring LED
• 4U high rackmount and bench top installation
• Accepts both 3U PXI and CompactPCI
modules
• One system slot and 5 PXI/CompactPCI
peripheral slots
• PXI specifications Rev. 2.0 compliant
• Filtered, forced
• Side handles and stand feet for portability
• IEEE 1101.10 mechanical packaging
compliant
-air cooling
-air cooling
• 400W ATX power
• Modular AC or DC 250W
power supply
Safety symbols and terms
The following symbols and terms may be found on the Model KPXI-SYS chassis or used in this
manual.
The symbol indicates that the user should refer to the operating instructions located in the
!
manual.
The symbol shows that high voltage may be present on the terminal(s). 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 WARNING heading used in this 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 used in this manual explains hazards that could damage the unit. Such
damage may invalidate the warranty.
Specifications
Refer to the product data sheet for updated Keithley Instruments KPXI System 3U PXI Instrument
Chassis specifications. Check the Keithley Instruments website at www.keithley.com for the latest
updates to the specifications.
1-4 Return to Section Topics KPXI-SYS-900-01 Rev. A / January 2007
KPXI 3U Instrument Chassis User’s Manual Section 1: Introduction
Unpacking and inspection
Inspection for damage
CAUTION Your KPXI-SYS series chassis contains electro-static sensitive components
that can be easily be damaged by static electricity.
Therefore, handle the chassis on a grounded anti-static mat. The operator
should be wearing an anti-static wristband, grounded at the same point as the
anti-static mat.
Keithley Instruments KPXI System 3U PXI Instrument Chassis was carefully inspected electrically
and mechanically before shipment.
Inspect the chassis carton for obvious damages. Shipping and handling may damage the chassis.
Make sure there is no shipping and handling damage on the module’s carton before continuing.
After opening the chassis carton, extract the chassis and place it only on a suitable surface. Save
the original packing carton for possible future shipment.
Again, inspect the chassis for damages. Report any damage to the shipping agent immediately.
Shipment contents
The following items are included with every Model KPXI-SYS series order:
• Keithley Instruments KPXI System 3U PXI Instrument Chassis
• CD containing required software and manuals
•Power cord
Instruction manual
A CD-ROM containing this User’s Manual and required software is included with each Keithley
Instruments KPXI-SYS series chassis order. If a hardcopy of the Keithley Instruments KPXI-SYS
series User’s Manual is required, you can order the Manual Package (Keithley Instruments Part
Number KPXI-SYS-900-01). The Manual Package includes an instruction manual and any
pertinent addenda.
Always check the Keithley Instruments website at www.keithley.com for the latest revision of the
manual. The latest manual can be downloaded (in PDF format) from the website.
Repacking for shipment
CAUTION The chassis must be protected from static discharge and physical shock.
Never remove any of the socketed parts except at a static-free workstation.
Wear a grounded wrist strap when servicing.
Should it become necessary to return the Keithley Instruments KPXI System Chassis for repair,
carefully pack the unit in its original packing carton or the equivalent, and follow these instructions:
• Call Keithley Instruments’ repair department at 1-888-KEITHLEY (1-888-534-8453) for a
Return Material Authorization (RMA) number.
• Let the repair department know the warranty status of the KPXI System Chassis.
• Write ATTENTION REPAIR DEPARTMENT and the RMA number on the shipping label.
• Complete and include the Service Form located at the back of this manual.
KPXI-SYS-900-01 Rev. A / January 2007 Return to Section Topics 1-5
Section 1: Introduction KPXI 3U Instrument Chassis User’s Manual
This page left blank intentionally.
1-6 Return to Section Topics KPXI-SYS-900-01 Rev. A / January 2007
In this section:
Top ic Pa ge
Introduction......................................................................................... 2-2
Power considerations ...................................................................... 2-2
Installation........................................................................................... 2-2
System monitoring............................................................................ 2-3
Rack Mounting ................................................................................... 2-4
Section 2
Installation
KPXI-SYS-18-460X2 , KPXI-SYS-8-400, and KPXI-SYS-14-500 .... 2-2
KPXI-SYS-6-250 (6 slot chassis)...................................................... 2-3
Section 2: Installation KPXI 3U Instrument Chassis User’s Manual
Introduction
This section contains information about handling and installing Keithley Instruments’
KPXI-SYS series 3U PXI Instrument Chassis:
• Power considerations
• Installation
• System monitoring
Power considerations
Before installing a module into the KPXI-SYS series chassis, make sure to calculate the total
system power requirement (calculate the power budget). Check every DC power source including:
+5V, +3.3V, +12V, and -12V supply rail. Please refer to the product data sheet for the maximum
usable power for your specific chassis.
Installation
Refer to the applicable model number below for installation information.
KPXI-SYS-18-460X2 , KPXI-SYS-8-400, and KPXI-SYS-14-500
WARNING The following mainframes have been evaluated for safety according to
IEC-60950 as component assemblies: KPXI-SYS-18-460X2 , KPXI-SYS-8-400,
and KPXI-SYS-14-500.
To maintain the protection provided by these chassis, it is recommended that
they be mounted inside a suitable rack or other enclosure according to the
requirements of the end use.
Use the following steps as a guideline for installation of the chassis:
Step 1: Make sure the power switch is in the OFF position.
Step 2: Plug in the AC power cord in each power supply unit.
Step 3: Install the controller. Please check the ejector/injector handle is pushed down. Align the
controller edge to the "RED" card guide, sliding in to the rear of the chassis. Push up on
the ejector/injector handle to fully inject the card into the chassis. Secure the screws on
the module's front panel. Connect the keyboard, mouse, and monitor to the controller with
the ps2 Y-cable before booting system.
Step 4: Install peripheral modules if any.
Step 5: Press the power switch on the front panel to power on the chassis.
Step 6: Check the LED to make sure the power input is ready. There are four green LED
indicators of 3.3V, 5V, +12V, and -12V. The four LED indicators will light with power on.
The fans should become operational as well.
NOTE Refer to Section 4 if the chassis does not power on.
2-2 Return to Section Topics KPXI-SYS-900-01 Rev. A / January 2007
KPXI 3U Instrument Chassis User’s Manual Section 2: Installation
KPXI-SYS-6-250 (6 slot chassis)
NOTE It is not recommended to rack mount the 6 slot benchtop chassis (Model
KPXI-SYS-6-250). No mounting brackets are included with this model.
Use the following steps as a guideline for installation of the chassis:
Step 1: For desktop applications, please reserve sufficient space under the chassis for ventilation
and make sure the surface the chassis is sitting on is flat and firm.
Step 2: Ensure the power switch is in the Standby (Off) position. There are two power switches on
the KPXI-SYS-6-250 chassis. The switch in the rear is for turning ON or OFF the power
cord input to the PSU (Power Supply Unit). The switch in the front is for turning ON or OFF
the PSU DC power output to the PXI system. Note that the printed Keithley Instruments
logo indicates the front panel of the chassis.
Step 3: Plug in the AC power cord.
Step 4: Make sure the CPU, RAM, and storage device are secured on the system controller
module.
Step 5: Install the controller. Please check the ejector/injector handle is pushed down. Align the
controller edge to the "RED" card guide, sliding in to the rear of the chassis. Push up on
the ejector/injector handle to fully inject the module into the chassis. Secure the screws on
the module's front panel. Connect the keyboard, mouse, and monitor to the controller with
the ps2 Y-cable before booting system.
Step 6: Install peripheral modules, if necessary.
Step 7: Turn on the rear switch for inputting the AC power to the PSU. The amber LED will light.
Step 8: Turn on the front switch to power on the chassis. The amber LED will go off and the green
LED will light.
Step 9: Check if the system power starts, the fans under the chassis should become operational
as well.
NOTE Refer to Section 4 if the chassis does not power on.
System monitoring
There are LEDs on the front panel of the 8,14, and 18 slot chassis for system monitoring, including
powers, temperature, and fans. Please refer to following for the detailed meaning of display status
on LEDs.
Table 2-1
System Monitoring
LED Description
Power LED (Voltage : 3.3V,
5V, +12V,
Temperature LED Color: Amber
Fan LED Color: Green
Alarm LED Color: Red
-12V)
Color: Green
ON while supplied
ON for normal condition
Flashes if exceeds temperature
ON while normal fan speed
Flashes if abnormal fan speed
ON while normal condition
Flashes if alarm occurs
KPXI-SYS-900-01 Rev. A / January 2007 Return to Section Topics 2-3
Section 2: Installation KPXI 3U Instrument Chassis User’s Manual
The Alarm Buzzer beeps continuously if any alarm occurs. When the Alarm Buzzer beeps, users
can check the LED on the front panel to find out which kind of alarm occurs.
There is a black button labeled Alarm RST near by the Alarm LED on the front panel. When the
Alarm LED flashes and the Alarm Buzzer continues beeping, you can push Alarm RST button to
stop beeping.
NOTE Users can further refer to Section 4 for Troubleshooting.
There is one Green LED on each power supply unit in the rear and the red button between the
power supply units is power RST. When the alarm buzzer beeps and the power LED extinguishes,
you can push power RST button to stop beeping and refer to
supply unit.
Section 4 to hot-swap the power
Rack Mounting
NOTE It is not recommended to rack mount the 6 slot benchtop chassis (Model
KPXI-SYS-6-250). No mounting brackets are included with this model.
The KPXI-SYS-8-400, KPXI-SYS-14-500, and the KPXI-18-450X2 are all suitable for rack
mounting. The brackets needed for rack mounting are the same brackets used by the handles. To
rack mount these chassis, use the following instructions:
1. Verify that you are installing the system into a standard 19" rack into a 4 U high space without any obstructions.
2. Remove the feet.
3. Remove the front handles from the side brackets. Do not remove the side brackets from the
chassis (these brackets will be used for rack mounting, the handles pieces need to be
removed to allow easy access to the holes used for rack mounting).
4. Guide the chassis into the rack and secure it using screws through both interior holes
located on each side bracket.
– Make sure that screws and fasteners used can support the weight of the chassis when
fully loaded.
– Make sure that screws are fastened tightly to the rack’s vertical rails, either to fasteners
or to holes that are threaded directly in the rails.
NOTE For the 18 slot chassis (Model KPXI-18-450X2), it is recommended to place the chassis
on a shelf within the rack for further support.
2-4 Return to Section Topics KPXI-SYS-900-01 Rev. A / January 2007
In this section:
Top ic Pa ge
Introduction......................................................................................... 3-2
KPXI-SYS-18-460X2........................................................................... 3-2
KPXI-SYS-14-500................................................................................ 3-4
Section 3
Backplane Overview
System controller slot ....................................................................... 3-2
Local bus .......................................................................................... 3-2
Star trigger slot ................................................................................. 3-2
Peripheral slots................................................................................. 3-2
Trigger bus........................................................................................ 3-2
System reference clock .................................................................... 3-3
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
Section 3: Backplane Overview KPXI 3U Instrument Chassis User’s Manual
Introduction
This section contains information on the Keithley Instruments KPXI-SYS series 3U PXI Instrument
Chassis’ backplanes. Features common to all Keithley Instruments KPXI-SYS series 3U PXI
Instrument Chassis’ backplanes are contained in this paragraph. For features that are specific to
each model, refer to the following paragraphs:
• KPXI-SYS-18-460X2, page 3-2
• KPXI-SYS-14-500, page 3-4
• KPXI-SYS-8-400, page 3-4
• KPXI-SYS-6-250, page 3-5
System controller slot
The System Controller slot is Slot 1 of the chassis as defined by the PXI specification. It has three
controller expansion slots, which are used for system controller modules that are wider than one
slot. As defined in the PXI specification, these slots allow the controller to expand to the left to
prevent the controller from using up peripheral slots.
Local bus
The local bus of the PXI backplane is daisy-chained, connecting each peripheral slot with adjacent
peripheral slots (one to the left and one to the right). Each local bus is 13 lines wide and can pass
analog signals between modules or provide a high-speed side-band communication path that
does not affect the PXI bandwidth.
In accordance with the PXI specification, the local bus connections between all slots except slots 1
and 2.
KPXI-SYS-18-460X2
Star trigger slot
The Star Trigger (ST) slot is Slot 2. This slot has a dedicated trigger line between itself and slots
3-15 which is intended for modules with ST functionality that can provide individual triggers to the
peripherals.
Peripheral slots
There are 17 peripheral slots including the Star Trigger controller slot.
Trigger bus
KPXI-SYS-18-460X2 has three PXI separate trigger bus segments. The PXI trigger bus is divided
into three separate trigger buses at these locations. The trigger bus divisions represented by
vertical bars on the front of the chassis. You can use triggers to synchronize the operation of
several different PXI peripheral modules, or use one module to control carefully timed sequences
of operations performed on other modules in the system. Modules can pass triggers to one
another through the trigger bus, allowing precisely timed responses to asynchronous external
events the system is monitoring or controlling.
3-2 Return to Section Topics KPXI-SYS-900-01 Rev. A / January 2007
KPXI 3U Instrument Chassis User’s Manual Section 3: Backplane Overview
Figure 3-1
KPXI-SYS-18-460X2 PXI Local Bus and Star Trigger Routing
System reference clock
Model KPXI-SYS-18-460X2 supplies the PXI 10MHz system clock signal (PXI_CLK10)
independently to every peripheral slot. An independent buffer (having a source impedance
matched to the backplane and a skew of less than 1ns between slots) drives the clock signal to
each peripheral slot. Users can use this common reference clock signal to synchronize multiple
modules in a measurement or control system.
KPXI-SYS-900-01 Rev. A / January 2007 Return to Section Topics 3-3
Section 3: Backplane Overview KPXI 3U Instrument Chassis User’s Manual
KPXI-SYS-14-500
Star trigger slot
The Star Trigger (ST) slot is Slot 2. This slot has a dedicated trigger line between itself and slots
3-11 which is intended for modules with ST functionality that can provide individual triggers to the
peripherals.
Peripheral slots
There are 13 peripheral slots including the Star Trigger controller slot.
Trigger bus
Model KPXI-SYS-14-500 has a PXI trigger bus. Users can use triggers to synchronize the
operation of several different PXI peripheral modules, or use one module to control carefully timed
sequences of operations performed on other modules in the system. Modules can pass triggers to
one another through trigger bus, allowing precisely timed responses to asynchronous external
events the system is monitoring or controlling.
System reference clock
The Model KPXI-SYS-14-500 supplies the PXI 10MHz system clock signal (PXI_CLK10)
independently to every peripheral slot. An independent buffer (having a source impedance
matched to the backplane and a skew of less than 1ns between slots) drives the clock signal to
each peripheral slot. Users can use this common reference clock signal to synchronize multiple
modules in a measurement or control system.
KPXI-SYS-8-400
Star trigger slot
The Star Trigger (ST) slot is Slot 2. This slot has a dedicated trigger line between itself and slots
3-8 is intended for modules with ST functionality that can provide individual triggers to the
peripherals.
Peripheral slots
There are 7 peripheral slots including the Star Trigger controller slot.
Trigger bus
Model KPXI-SYS-8-400 has a PXI trigger bus. Users can use triggers to synchronize the operation
of several different PXI peripheral modules, or use one module to control carefully timed
sequences of operations performed on other modules in the system. Modules can pass triggers to
one another through trigger bus, allowing precisely timed responses to asynchronous external
events the system is monitoring or controlling.
3-4 Return to Section Topics KPXI-SYS-900-01 Rev. A / January 2007
KPXI 3U Instrument Chassis User’s Manual Section 3: Backplane Overview
System Controller
Star Trigger
Peripheral slotPeripheral slotPeripheral slotPeripheral slot
Peripheral slotPeripheral slot
Figure 3-2
KPXI-SYS-8-400 PXI Local Bus and Star Trigger Routing
Clock 10 MHz Buffer Circuitry
PXI Star Triggers
1
System reference clock
The Model KPXI-SYS-8-400 supplies the PXI 10MHz system clock signal (PXI_CLK10)
independently to every peripheral slot. An independent buffer (having a source impedance
matched to the backplane and a skew of less than 1ns between slots) drives the clock signal to
each peripheral slot. Users can use this common reference clock signal to synchronize multiple
modules in a measurement or control system.
KPXI-SYS-6-250
Star trigger slot
The Star Trigger (ST) slot is spotted at Slot 2. This slot has a dedicated trigger line, linking itself
through Slot 3, 4, 5, and 6. It is intended for modules with ST functionality that can provide
individual triggers to synchronize or trigger the peripherals easily.
Local Bus Local Bus Local Bus Local Bus
Local
PXI Trigger Bus Segment and PCI Bus Segment
Local Bus
Peripheral slots
There are 5 peripheral slots shown in the following diagram, inclusive of the Star Trigger controller
slot.
KPXI-SYS-900-01 Rev. A / January 2007 Return to Section Topics 3-5
Section 3: Backplane Overview KPXI 3U Instrument Chassis User’s Manual
Figure 3-3
KPXI-SYS-6-250 PXI local bus and star trigger routing
Clock 10 MHz Buffer
PXI Star Triggers
System Controller
1
Star Trigger Controller
2
Trigger bus
KPXI-SYS-6-250 implements the dedicated PXI trigger bus with 8 lines. Users can use these
trigger lines to synchronize the operation of several different PXI peripheral modules, or use one
module to control carefully timed sequences of operations performed on other modules in the
system. Modules can pass triggers to one another through trigger bus, allowing precisely timed
responses to asynchronous external events the system is monitoring or controlling.
System reference clock
KPXI-SYS-6-250 supplies the PXI 10MHz system clock signal (PXI_CLK10) independently to
every peripheral slot. An independent buffer (having a source impedance matched to the
backplane and a skew of less than 1 ns between slots) drives the clock signal to each peripheral
slot. Users can use this common reference clock signal to exactly synchronize multiple modules in
a measurement or control system.
Peripheral slot
3
PXI Trigger Bus Segment and PCI Bus Segment
Peripheral slot
4
Peripheral slot
Local Bus Local Bus Local Bus Local Bus
5
Peripheral slot
6
3-6 Return to Section Topics KPXI-SYS-900-01 Rev. A / January 2007
In this section:
Top ic Pa ge
Introduction......................................................................................... 4-2
Troubleshooting and maintenance............................................... 4-2
Section 4
Troubleshooting and Maintenance
Temperature detection...................................................................... 4-2
Fan hot-swap replacement ............................................................... 4-2
Power supply unit hot-swap replacement......................................... 4-2
Section 4: Troubleshooting and Maintenance KPXI 3U Instrument Chassis User’s Manual
Introduction
This section contains troubleshooting and maintenance information on Keithley Instruments
KPXI-SYS series 3U PXI Instrument Chassis.
Troubleshooting and maintenance
Refer to Table 4-1 to troubleshoot the chassis. The table lists possible causes for power failure and
recommends ways to correct the problem.
Table 4-1
Troubleshooting power failure
Possible Cause What to Do
Chassis not connected to power
source.
Power switch is not switched on. Make sure that the power switch is set to the ON position.
The Alarm Buzzer is beeping Push Alarm RST button to stop beeping and refer to Section 2 to find out which alarm
Power supply has failed Model KPXI-SYS-18-460X2: Replace the power supply — see
The Power Buzzer is beeping Check if both power supplies have power cord on it. If either one of the power supply failed,
Make sure that the KPXI-SYS-18-460X2 is connected to a live electrical outlet. Try
operating another piece of equipment from this outlet.
occurs.
Temperature LED flashes: Cool down the KPXI-SYS-18-460X2 system under 50°C
Fan LED flashes: Check to see if anything is blocking the fan from spinning. If not, replace
the fan.
KPXI-SYS-14-500 and KPXI-SYS-18-460X2, and KPXI-SYS-8-400, see Fan hot-swap
replacement
Power supply unit hot-swap replacement
Other models: Contact Keithley Instruments for repair
see Power supply has failed (above in this table).
Temperature detection
If the system overheats, an Amber Temp LED flashes and a buzzer beeps continuously. The over
temperature alarm will activate when a temperature over 50°C is detected.
Fan hot-swap replacement
There is a LED for each fan for system monitoring. When any one of the fans is defective, the
corresponding LED flashes and the alarm buzzer keeps beeping. Please refer to the following for
the fan hot-swap replacement.
Fan Hot-Swap Replacement Procedure
Step 1: Press the Alarm RST button on the front panel to stop the beeping.
Step 2: Remove the fan’s front panel cover.
Step 3: Pull out the defective fan.
Step 4: Replace with a new fan.
Step 5: Replace the fan’s front panel cover.
Power supply unit hot-swap replacement
NOTE This procedure is for the Model KPXI-SYS-18-460X2 chassis only.
4-2 Return to Section Topics KPXI-SYS-900-01 Rev. A / January 2007
KPXI 3U Instrument Chassis User’s Manual Section 4: Troubleshooting and Maintenance
For the KPXI-SYS-18-460X2 chassis, there are four Green LED indicators for 3.3V, 5V, +12V, and
-12V. There is also a Green LED for each power supply unit on the rear panel. The power unit is
defective if the LED on the rear panel is extinguished or if the buzzer beeps continuously.
The red bottom between the power supply units is power RST. When alarm buzzer beeps caused
by power defective, you can push power RST bottom to stop beeping.
PSU Hot-Swap Replacement Procedure
Step 1: Press the red button on the rear panel to stop the buzzer beeping.
Step 2: Locate the defective power by examining the indication of the individual LED on the rear
panel.
Step 3: Unplug the power cord of defective power supply from AC inlet.
Step 4: Unscrew all mounting screws fixing the defective power supply unit.
Step 5: Pull out the defective unit.
Step 6: Replace with a new power supply unit. Contact Keithley Instruments for a replacement
power supply unit.
Step 7: Screw all mounting screws to fix the new power supply unit.
Step 8: Plug in the power cord.
KPXI-SYS-900-01 Rev. A / January 2007 Return to Section Topics 4-3
Section 4: Troubleshooting and Maintenance KPXI 3U Instrument Chassis User’s Manual
This page left blank intentionally.
4-4 Return to Section Topics KPXI-SYS-900-01 Rev. A / January 2007
Service Form
Model No. _______________ Serial No. _______________ Date _______________________________
Name and Telephone No. _____________________________________________________________________
Company _____________________________________________________________________________________
List all control settings, describe problem and check boxes that apply to problem._____________________________________
____________________________________________________________________________________________________
____________________________________________________________________________________________________
Intermittent Analog output follows display Particular range or function bad; specify
____________________________________________
IEEE failure Obvious problem on power-up Batteries and fuses are OK
Front panel operational All ranges or functions are bad Checked all cables
Display or output (check one)
Drifts Unable to zero Unstable
Overload Will not read applied input
Calibration only Certificate of calibration required Data required
(attach any additional sheets as necessary)
Show a block diagram of your measurement including all instruments connected (whether power is turned on or not).
Also, describe signal source.
Where is the measurement being performed? (factory, controlled laboratory, out
____________________________________________________________________________________________________
What power line voltage is used? ___________________________ Ambient temperature? __________________________ °F
Relative humidity? ______________________________________ Other? _________________________________________
Any additional information. (If special modifications have been made by the user, please describe.)
____________________________________________________________________________________________________
____________________________________________________________________________________________________
Be sure to include your name and telephone number on this service form.
-of-doors, etc.)__________________________
12/06
Specifications are subject to change without notice.
All Keithley trademarks and trade names are the property of Keithley Instruments, Inc.
All other trademarks and trade names are the property of their respective companies.
A GREATER MEASURE OF CONFIDENCE
Keithley Instruments, Inc.
Corporate Headquarters • 28775 Aurora Road • Cleveland, Ohio 44139 • 440-248-0400 • Fax: 440-248-6168 • 1-888-KEITHLEY • www.keithley.com
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