Important Information
Warranty
The NI PXI-8250 is warranted against defects in materials and workmanship for a period of one year from the date of shipment, as evidenced
by receipts or other documentation. National Instruments will, at its option, repair or replace equipment that proves to be defective during the
warranty period. This warranty includes parts and labor.
The media on which you receive National Instruments software are warranted not to fail to execute programming instructions, due to defects in
materials and workmanship, for a period of 90 days from date of shipment, as evidenced by receipts or other documentation. National Instruments
will, at its option, repair or replace software media that do not execute programming instructions if National Instruments receives notice of such defects
during the warranty period. National Instruments does not warrant that the operation of the software shall be uninterrupted or error free.
A Return Material Authorization (RMA) number must be obtained from the factory and clearly marked on the outside of the package before any
equipment will be accepted for warranty work. National Instruments will pay the shipping costs of returning to the owner parts which are covered by
warranty.
National Instruments believes that the information in this document is accurate. The document has been carefully reviewed for technical accuracy. In
the event that technical or typographical errors exist, National Instruments reserves the right to make changes to subsequent editions of this document
without prior notice to holders of this edition. The reader should consult National Instruments if errors are suspected. In no event shall National
Instruments be liable for any damages arising out of or related to this document or the information contained in it.
EXCEPT AS SPECIFIED HEREIN, NATIONAL INSTRUMENTS MAKES NO WARRANTIES, EXPRESS OR IMPLIED, AND SPECIFICALLY DISCLAIMS ANY WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. CUSTOMER’S RIGHT TO RECOVER DAMAGES CAUSED BY FAULT OR NEGLIGENCE ON THE PART OF NATIONAL
INSTRUMENTS SHALL BE LIMITED TO THE AMOUNT THERETOFORE PAID BY THE CUSTOMER. NATIONAL INSTRUMENTS WILL NOT BE LIABLE FOR DAMAGES RESULTING
FROM LOSS OF DATA, PROFITS, USE OF PRODUCTS, OR INCIDENTAL OR CONSEQUENTIAL DAMAGES, EVEN IF ADVISED OF THE POSSIBILITY THEREOF. This limitation of
the liability of National Instruments will apply regardless of the form of action, whether in contract or tort, including negligence. Any action against
National Instruments must be brought within one year after the cause of action accrues. National Instruments shall not be liable for any delay in
performance due to causes beyond its reasonable control. The warranty provided herein does not cover damages, defects, malfunctions, or service
failures caused by owner’s failure to follow the National Instruments installation, operation, or maintenance instructions; owner’s modification of the
product; owner’s abuse, misuse, or negligent acts; and power failure or surges, fire, flood, accident, actions of third parties, or other events outside
reasonable control.
Copyright
Under the copyright laws, this publication may not be reproduced or transmitted in any form, electronic or mechanical, including photocopying,
recording, storing in an information retrieval system, or translating, in whole or in part, without the prior written consent of National
Instruments Corporation.
National Instruments respects the intellectual property of others, and we ask our users to do the same. NI software is protected by copyright and other
intellectual property laws. Where NI software may be used to reproduce software or other materials belonging to others, you may use NI software only
to reproduce materials that you may reproduce in accordance with the terms of any applicable license or other legal restriction.
Trademarks
National Instruments, NI, ni.com, and LabVIEW are trademarks of National Instruments Corporation. Refer to the Terms of Use section
on ni.com/legalfor more information about National Instruments trademarks.
Other product and company names mentioned herein are trademarks or trade names of their respective companies.
Members of the National Instruments Alliance Partner Program are business entities independent from National Instruments and have no agency,
partnership, or joint-venture relationship with National Instruments.
Patents
For patents covering National Instruments products, refer to the appropriate location: Help»Patents in your software, the patents.txtfile
on your media, or ni.com/patents.
WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS
(1) NATIONAL INSTRUMENTS PRODUCTS ARE NOT DESIGNED WITH COMPONENTS AND TESTING FOR A LEVEL OF
RELIABILITY SUITABLE FOR USE IN OR IN CONNECTION WITH SURGICAL IMPLANTS OR AS CRITICAL COMPONENTS IN
ANY LIFE SUPPORT SYSTEMS WHOSE FAILURE TO PERFORM CAN REASONABLY BE EXPECTED TO CAUSE SIGNIFICANT
INJURY TO A HUMAN.
(2) IN ANY APPLICATION, INCLUDING THE ABOVE, RELIABILITY OF OPERATION OF THE SOFTWARE PRODUCTS CAN BE
IMPAIRED BY ADVERSE FACTORS, INCLUDING BUT NOT LIMITED TO FLUCTUATIONS IN ELECTRICAL POWER SUPPLY,
COMPUTER HARDWARE MALFUNCTIONS, COMPUTER OPERATING SYSTEM SOFTWARE FITNESS, FITNESS OF COMPILERS
AND DEVELOPMENT SOFTWARE USED TO DEVELOP AN APPLICATION, INSTALLATION ERRORS, SOFTWARE AND HARDWARE
COMPATIBILITY PROBLEMS, MALFUNCTIONS OR FAILURES OF ELECTRONIC MONITORING OR CONTROL DEVICES,
TRANSIENT FAILURES OF ELECTRONIC SYSTEMS (HARDWARE AND/OR SOFTWARE), UNANTICIPATED USES OR MISUSES, OR
ERRORS ON THE PART OF THE USER OR APPLICATIONS DESIGNER (ADVERSE FACTORS SUCH AS THESE ARE HEREAFTER
COLLECTIVELY TERMED “SYSTEM FAILURES”). ANY APPLICATION WHERE A SYSTEM FAILURE WOULD CREATE A RISK OF
HARM TO PROPERTY OR PERSONS (INCLUDING THE RISK OF BODILY INJURY AND DEATH) SHOULD NOT BE RELIANT SOLELY
UPON ONE FORM OF ELECTRONIC SYSTEM DUE TO THE RISK OF SYSTEM FAILURE. TO AVOID DAMAGE, INJURY, OR DEATH,
THE USER OR APPLICATION DESIGNER MUST TAKE REASONABLY PRUDENT STEPS TO PROTECT AGAINST SYSTEM FAILURES,
INCLUDING BUT NOT LIMITED TO BACK-UP OR SHUT DOWN MECHANISMS. BECAUSE EACH END-USER SYSTEM IS
CUSTOMIZED AND DIFFERS FROM NATIONAL INSTRUMENTS' TESTING PLATFORMS AND BECAUSE A USER OR APPLICATION
DESIGNER MAY USE NATIONAL INSTRUMENTS PRODUCTS IN COMBINATION WITH OTHER PRODUCTS IN A MANNER NOT
EVALUATED OR CONTEMPLATED BY NATIONAL INSTRUMENTS, THE USER OR APPLICATION DESIGNER IS ULTIMATELY
RESPONSIBLE FOR VERIFYING AND VALIDATING THE SUITABILITY OF NATIONAL INSTRUMENTS PRODUCTS WHENEVER
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LIMITATION, THE APPROPRIATE DESIGN, PROCESS AND SAFETY LEVEL OF SUCH SYSTEM OR APPLICATION.
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About This Manual
Chapter 1
Getting Started
About the NI PXI-8250 Module ....................................................................................1-1
What You Need to Get Started ......................................................................................1-2
Chapter 2
Software Installation......................................................................................................2-1
NI PXI-8250 Configuration...........................................................................................2-5
Chapter 3
Front Panel LEDs...........................................................................................................3-4
System Status LEDs ........................................................................................3-5
Front Panel Connector ...................................................................................................3-5
Alert Relay Pins...............................................................................................3-7
Power Output Pins...........................................................................................3-7
Appendix A
Specifications
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Contents
Technical Support and Professional Services
Glossary
Index
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About This Manual
The NI PXI-8250 User Manual describes the features of the NI PXI-8250,
and contains information about configuring and operating the hardware.
Conventions
The following conventions are used in this manual:
»
The » symbol leads you through nested menu items and dialog box options
to a final action. The sequence File»Page Setup»Options directs you to
pull down the File menu, select the Page Setup item, and select Options
from the last dialog box.
This icon denotes a note, which alerts you to important information.
This icon denotes a caution, which advises you of precautions to take to
avoid injury, data loss, system crash, product damage, or product
malfunction. When this symbol is marked on the product, refer to the Read
Me First: Safety and Radio-Frequency Interference document, shipped
with the product, for precautions to take.
bold
Bold text denotes items that you must select or click in the software, such
as menu items and dialog box options. Bold text also denotes parameter
names.
italic
Italic text denotes variables, emphasis, a cross-reference, or an introduction
to a key concept. Italic text also denotes text that is a placeholder for a word
or value that you must supply.
monospace
Text in this font denotes text or characters that you should enter from the
keyboard, sections of code, programming examples, and syntax examples.
This font is also used for the proper names of disk drives, paths, directories,
programs, subprograms, subroutines, device names, functions, operations,
variables, filenames, and extensions.
NI PXI-1042/1042Q
NI PXI-1042/1042Q indicates that either an NI PXI-1042 or
NI PXI-1042Q chassis may be used. When the NI PXI-1042Q chassis is
referred to alone in the text, then the text is not relevant to the NI PXI-1042
chassis.
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About This Manual
Related Documentation
The following documents contain information that you might find helpful
as you read this manual:
•
IEEE 1101.1-1991, IEEE Standard for Mechanical Core
Specifications for Microcomputers Using IEC 603-2 Connectors
•
IEEE 1101.10, IEEE Standard for Additional Mechanical
Specifications for Microcomputers Using IEEE 1101.1 Equipment
Practice
•
•
•
•
PICMG EXP.0 R1.0 CompactPCI Express Specification,
PCI Industrial Computers Manufacturers Group
PCI Express Base Specification, Revision 1.1, PCI Special Interest
Group
PXI-5 PXI Express Hardware Specification, Revision 1.0,
PXI Systems Alliance
NI System Monitor 1.1 Help
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1
Getting Started
This chapter includes information about the features of the NI PXI-8250
and information about operating the hardware.
About the NI PXI-8250 Module
The NI PXI-8250 module monitors the status parameters of a chassis and
displays the status information with front panel LEDs and an alert relay.
Features
NI PXI-8250 can be used with an NI PXI-1042, NI PXI-1042Q, or
NI PXI-1045 chassis to detect and report chassis voltage rail problems,
out-of-range chassis intake temperature, or chassis power shuttle fan
failure. The NI PXI-8250 monitors the status of these parameters and
reports the status through a set of LEDs on the front panel of the module.
The NI PXI-8250 also includes a relay that toggles when any of the
parameters fall outside of specification during chassis operation. These
features can be used to monitor the state of the chassis and easily identify
system failure.
The NI PXI-8250 comes with NI System Monitor software that includes the
driver for the module and an application programming interface (API) that
allows programmatic access to the information reported by the module.
Although the driver allows for proper detection of the hardware, it is not
required for the normal operation of the six system status LEDs, the
alert relay, or the power outputs of the NI PXI-8250.
There is also a set of six user LEDs on the front panel of the NI PXI-8250
designed for custom alert configurations. This feature is not available
with NI System Monitor 1.1, and may be added in future releases of
NI System Monitor. Refer to the NI System Monitor Help for more
information.
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What You Need to Get Started
To set up and use the NI PXI-8250 module, you must have the following
items:
❑ An NI PXI-8250 System Monitor module
❑ An NI PXI-1042, NI PXI-1042Q, or NI PXI-1045 chassis
❑ This manual
❑ Optional: The NI System Monitor 1.1 driver software and
documentation
Software Programming Choices
The NI System Monitor software includes a simple but powerful high-level
application programming interface (API) that makes creating custom
applications for the NI PXI-8250 easy. Refer to the
NI System Monitor 1.1 Help for information on the API.
Safety Information
Caution The following paragraphs contain important safety information you must follow
when installing and operating the NI PXI-8250, and all devices connecting to the
NI PXI-8250.
Do not operate the device in a manner not specified in this document.
Misuse of the device can result in a hazard. You can compromise the safety
protection built into the device if the device is damaged in any way. If the
device is damaged, return it to National Instruments (NI) for repair.
Do not substitute parts or modify the device except as described in this
document. Use the device only with the chassis, specified in the installation
instructions. You must have all covers and filler panels installed during
operation of the device.
Do not operate the device in an explosive atmosphere or where there may
be flammable gases or fumes. If you must operate the device in such an
environment, it must be in a suitably rated enclosure.
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If you need to clean the device, use a soft, nonmetallic brush. Make sure
that the device is completely dry and free from contaminants before
returning it to service.
Operate the device only at or below Pollution Degree 2. Pollution is foreign
matter in a solid, liquid, or gaseous state that can reduce dielectric strength
or surface resistivity. The following is a description of pollution degrees:
•
Pollution Degree 1 means no pollution or only dry, nonconductive
pollution occurs. The pollution has no influence.
•
Pollution Degree 2 means that only nonconductive pollution occurs in
most cases. Occasionally, however, a temporary conductivity caused
by condensation must be expected.
•
Pollution Degree 3 means that conductive pollution occurs, or dry,
nonconductive pollution occurs that becomes conductive due to
condensation.
Note The NI PXI-8250 is intended for indoor use only.
You must insulate signal connections for the maximum voltage for which
the device is rated. Do not exceed the maximum ratings for the device. Do
not install wiring while the device is live with electrical signals. Do not
remove or add connector blocks when power is connected to the system.
Remove power from signal lines before connecting them to or
disconnecting them from the device.
Operate the device at or below the installation category1 marked on the
hardware label. Measurement circuits are subjected to working voltages2
and transient stresses (overvoltage) from the circuit to which they are
connected during measurement or test. Installation categories establish
standard impulse withstand voltage levels that commonly occur in
electrical distribution systems. The following is a description of installation
categories:
•
Installation Category I is for measurements performed on circuits not
directly connected to the electrical distribution system referred to as
MAINS3 voltage. This category is for measurements of voltages from
specially protected secondary circuits. Such voltage measurements
include signal levels, special equipment, limited-energy parts of
1
2
3
Installation categories, also referred to as measurement categories, are defined in electrical safety standard IEC 61010-1.
Working voltage is the highest rms value of an AC or DC voltage that can occur across any particular insulation.
MAINS is defined as a hazardous live electrical supply system that powers equipment. Suitably rated measuring circuits may
be connected to the MAINS for measuring purposes.
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Chapter 1
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equipment, circuits powered by regulated low-voltage sources, and
electronics.
•
•
•
Installation Category II is for measurements performed on circuits
directly connected to the electrical distribution system. This category
refers to local-level electrical distribution, such as that provided by a
standard wall outlet (for example, 115 AC voltage for U.S. or 230 AC
voltage for Europe). Examples of Installation Category II are
measurements performed on household appliances, portable tools, and
similar devices/modules.
Installation Category III is for measurements performed in the building
installation at the distribution level. This category refers to
measurements on hard-wired equipment such as equipment in fixed
installations, distribution boards, and circuit breakers. Other examples
are wiring, including cables, bus bars, junction boxes, switches, socket
outlets in the fixed installation, and stationary motors with permanent
connections to fixed installations.
Installation Category IV is for measurements performed at the primary
electrical supply installation (<1,000 V). Examples include electricity
meters and measurements on primary overcurrent protection devices
and on ripple control units.
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2
Configuration and Installation
This chapter describes how to configure and install the NI PXI-8250.
Software Installation
Before installing the NI PXI-8250, install the NI System Monitor driver
software. Refer to the NI System Monitor 1.1 Help for specific installation
instructions.
Notes It is necessary to install the NI System Monitor driver software before attempting to
use the NI PXI-8250, or the system will not recognize the NI PXI-8250 and you will be
unable to configure or use the device.
The NI PXI-8250 will not be visible in Measurement & Automation Explorer (MAX) even
after proper installation. You can see the module in Windows Device Manager once the
installation process is complete and Device Manager has been refreshed.
When adding or removing an NI PXI-8250 module from a Windows XP/2000/NT system,
you must be logged on with administrator-level permission. The NI PXI-8250 will not be
viewable in Measurement & Automation Explorer (MAX) at any time.
Hardware Installation
The following instructions are for general module installation in the
specified chassis. Consult the PXI chassis user manual for a given chassis
for chassis-specific instructions and warnings related to installation or
module configuration.
Cautions The NI PXI-8250 module may sustain damage or inflict damage on adjacent
modules if improperly installed.
Proper slot selection is required for the operation of this module. If the module is installed
in any other slot, the module will not operate and could potentially cause other adjacent
modules to not operate. Appendix A, Specifications, lists the typical power required for the
NI PXI-8250 module.
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Chapter 2
Configuration and Installation
The NI PXI-8250 is a sensitive electronic device shipped in an antistatic bag. Open only at
an approved workstation and observe precautions for handling electrostatic-sensitive
devices.
Note Install the NI PXI-8250 in only the right-most slot of an NI PXI-1042/1042Q or
NI PXI-1045. As such, the NI PXI-8250 should only be installed in slot 8 of an
NI PXI-1042/1042Q chassis or slot 18 of an NI PXI-1045 chassis.
Complete the following steps to install the NI PXI-8250 module.
1. Power off and unplug the chassis.
Caution To protect yourself and the computer from electrical hazards, the chassis must
remain unplugged until the installation is complete.
2. Locate the rightmost (last numbered) slot of the NI PXI-1042/1042Q
or NI PXI-1045 chassis and ensure it is unused. If occupied, relocate
the module or remove the filler panel. Refer to Figure 2-1 for the
location of this slot on the NI PXI-1042/1042Q chassis, and Figure 2-2
for the location of this slot on the NI PXI-1045 chassis.
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NI PXI-1045
Slot 18
Figure 2-2. Location of NI PXI-1045 Slot for NI PXI-8250 Support
might be on your clothes or body. Static electricity can damage the
hardware.
4. Insert the NI PXI-8250 module into the rightmost slot of an
NI PXI-1042/1042Q or NI PXI-1045. The correct position is slot 8 for
the NI PXI-1042/1042Q and slot 18 for the NI PXI-1045, as shown in
Figure 2-1 and Figure 2-2, respectively. Use the injector/ejector handle
to fully inject the device into place.
5. Screw the front panel of the NI PXI-8250 to the front panel mounting
rails of the chassis.
6. Install a system controller or verify that a system controller has been
installed in the controller slot.
7. Plug in and power on the chassis.
8. Plug in and power on the host computer if using a remote controller in
the chassis.
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9. Allow the operating system to properly detect and identify the
NI PXI-8250 module.
10. Launch Windows Device Manager and refresh the view.
The NI PXI-8250 module should be visible in Windows Device Manager.
NI PXI-8250 Configuration
The NI PXI-8250 module is fully compatible with the industry standard
PXI Specification, Revision 2.2, and the PCI Local Bus Specification,
Revision 3.0, respectively. This compatibility allows the PXI system to
automatically perform all bus-related configuration and requires no user
interaction. Since the NI PXI-8250 does not require configuration, it will
not show up in MAX.
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3
Hardware Overview
This chapter presents an overview of the NI PXI-8250 functionality.
Figure 3-1, Figure 3-2, and Figure 3-3 show the locations of key features
for the NI PXI-8250 module.
1
2
3
4
7
6
5
1
2
3
4
Assembly Part Number Label
Serial Number Label
Safety Symbols (Refer to Figure 3-3 for details)
PXI/CompactPCI Connectors
5
6
7
One-Blow Fuses
Self-Resetting Fuses
Relay
Figure 3-1. NI PXI-8250 Parts Locator Diagram
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1
2
3
1
2
System Status LEDs
User LEDs
3
Front Panel Connector
(Relay/Power Outputs)
Figure 3-2. NI PXI-8250 Front Panel Diagram
1
2
3
1
2
3
Identification Number Used in Australia
Symbol Indicating FFC Compliance
Symbol to Alert User to Read the Manual
Figure 3-3. Symbols on the Back of the NI PXI-8250
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System Monitoring Architecture
With the NI PXI-8250, you can simultaneously monitor intake
temperature, fan speeds, and power supply levels of your NI PXI chassis.
This information allows the user to achieve a higher level of system
performance reliability. Once the first set of data is processed, these status
parameters will also light up the top six LEDs on the front panel. The LEDs
light either as green if the status parameter is in range, or red if the
parameter is out of range. Refer to the Front Panel LEDs section for more
information on the LEDs.
A custom FPGA on the NI PXI-8250 communicates with the power supply
module of the chassis for status information. Upon boot-up, the
NI PXI-8250 waits 7 seconds for the chassis sensors to acquire their first
value. Once the wait period is over, the NI PXI-8250 begins acquisition of
the first full set of data from the chassis. The status information is then
obtained every 5 seconds automatically in hardware until the controller is
rebooted or shutdown.
Voltage Rail Level Monitoring
The NI PXI-8250 module monitors the +5 V, +3.3 V, +12 V, and –12 V
rails delivered by the power supply shuttle within an accuracy of 100 mV.
The data from the +5 V and +3.3 V rails have two significant figures, while
the data from the +12 V and –12 V rails have one significant figure.
Each power rail has its own status LED on the front panel to reflect the
current status of the rail. If the voltage rail is within 5% of the common
chassis specification, then the LED will light green. Otherwise, the LED
will light red.
The voltage rail level monitoring feature of the NI PXI-8250 reports when
a voltage rail goes out of spec. This information is useful in ensuring proper
operating conditions for each PXI module.
Temperature Monitoring
The NI PXI-8250 provides monitoring of the single intake thermistor
located in the power supply shuttle of the PXI chassis. The reading from the
thermistor (0–50 °C) is compared to the operating range of the chassis. If
the reading is in range, the TEMP LED will light green. Otherwise, it will
light red. All temperature measurements are reported in Celsius and are
accurate to within 1 °C of the actual intake temperature.
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Fan Monitoring
The NI PXI-8250 module allows the user to monitor the revolutions per
minute (RPM) of all rear-facing fans of a PXI chassis (two fans in an
NI PXI-1042/1042Q and three fans in an NI PXI-1045), accurate to
50 RPM. The fan data from the chassis is interpreted by the NI PXI-8250
and the FAN front panel LED reflects the status of all of the fans
collectively together. Hence, if one or more of the fans becomes
non-operational (status below 1500 RPM) the LED will turn red to indicate
a fan error. Otherwise, the fan LED will light green if all of the fans are
operating within normal tolerances.
Additional Monitoring Features
In addition to the system status monitoring features, the NI PXI-8250
module includes an alert relay and fused power outputs. These features are
useful for user-defined monitoring applications. Refer to the Front Panel
Front Panel LEDs
The NI PXI-8250 has 12 front panel LEDs, including 6 system status LEDs
and 6 user-configured LEDs, as shown in Figure 3-4. Upon boot, all
12 LEDs will flash orange while it is being configured. The module then
turns the LEDs off for 7 seconds until the first valid sample set is acquired.
1
2
1
System Status LEDs (x6)
2
User LEDs (x6)
Figure 3-4. NI PXI-8250 Front Panel LED Diagram
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System Status LEDs
There are 6 system status LEDs to report the status of the +5 V, +3.3 V,
+12 V, and –12 V power rails, the intake temperature of the chassis, and the
overall status of the power shuttle fans of the chassis. These LEDs only
light up either red or green depending on whether the status information
shows the parameters in the specified range. The criteria for the system
status LEDs to light green is provided in Table 3-1. The acceptable range
for voltage rail data is 5%, 0–50 °C for the intake temperature reading,
and 1500+ RPM for fan speed. Any data acquired outside of these ranges
will be reflected as a red-lit LED.
Table 3-1. System Status LED Green State Criteria
Parameter
+5 V rail
Criteria for Green LED status
5% from nominal
+3.3 V rail
+12 V rail
–12 V rail
Fans
5% from nominal
5% from nominal
5% from nominal
>1500 RPM for all fans
0–50 °C
Temperature
User LEDs
The 6 user LEDs are driven by implementing them in software. Refer to the
NI System Monitor 1.1 Help for more information on developing
applications for the NI PXI-8250.
Front Panel Connector
The NI PXI-8250 has one 8-pin connector on the lower section of the front
panel. The 8-pin connector provides the three connections for the relay, as
well as five connections for the fused power outputs. The three relay pins
included normally closed (NC), normally open (NO), and common (COM)
ports to the electromechanical relay. The five power output connections
include fused pins to +5V, +3.3V, +12V, –12V, and ground.
Failure to do so may damage the module.
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Figure 3-5 shows the layout of this connector.
NO (Normally Open)
1
2
COM (Common)
NC (Normally Closed)
5V
3.3V
12V
-12V
GND (Ground)
1
Alert Relay Terminal Pins
2
Fused Power Output Terminal Pins
Figure 3-5. NI PXI-8250 Front Panel Connector Pinout Diagram
NO (Normally Open)
Chassis off
COM (Common)
(or power off)
NC (Normally Closed)
NO (Normally Open)
Initial power up
COM (Common)
COM (Common)
COM (Common)
of chassis (7 seconds)
NC (Normally Closed)
NO (Normally Open)
Chassis on
without error(s)
NC (Normally Closed)
NO (Normally Open)
Chassis on
with error(s)
NC (Normally Closed)
Figure 3-6. NI PXI-8250 Relay Operation Diagram
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Alert Relay Pins
The NI PXI-8250 has an electromechanical non-latching relay with three
ports: normally open (NO), normally closed (NC), and common (COM).
The top three pins of the front panel connector are connected to a relay as
indicated in Figure 3-5. This relay is useful for a creating a custom external
warning indicator circuit, such as a factory warning light or speaker.
During normal operation without any system status errors, the relay will
have COM connected to NO (and not NC). Once a system status error has
occurred (for instance. if the voltage rail level is out of range), the relay will
flip to connect COM to NC, rather than NO. Refer to Figure 3-6 for other
relay status information.
Notes For a use case where a warning light or speaker should be active (connected) to
show an error, connect from the COM to the NC port.
For a use case where a warning light or speaker should be active (connected) to show
proper, in-spec operation, connect from the COM to the NO port.
The relay alerts an error by connecting COM to NC when the chassis is
powered off or loses power. The relay on the NI PXI-8250 is rated to 30 V
and 1 A switching/carry current. Any connections to the relay on the
Power Output Pins
power outputs connected to each voltage rail of the power supply. Refer to
Figure 3-5 for the location of the power output pins. The +5 V, +3.3 V,
+12 V, and –12 V rails are all available from these connector pins along
with a ground connection at the bottom. These pins draw power from the
chassis power supply and are protected from current over-draw with
self-resetting fuses. Table 3-2 lists the maximum power output ratings for
each voltage rail.
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Chapter 3
Hardware Overview
Table 3-2. Fused Power Output Ratings
Voltage Rail Maximum Allowed Current Draw
+5.0 V
+3.3 V
+12.0 V
–12.0 V
0.75 A
0.75 A
0.25 A
0.25 A
end and one-blow fuses rated at 4 A/125 V on the back end of the card to
protect the card from excessive current draw. Refer to Figure 3-1 for the
locations of these fuses.
When current is exceeded on any of the rails (the current limits are provided
in Table 3-2), the self-resetting fuses will open the circuit. These fuses are
designed to reset themselves and do not need to be repaired.
As a fail-safe, one blow fuses have also been added to ensure that excessive
current is stopped if a self-resetting fuse fails to operate properly. In the
event that any of the one-blow fuses blow, the board must be returned for
repair.
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A
Specifications
This appendix lists the hardware and software performance specifications
for the PXI-8250. Hardware specifications are typical at 25 °C, unless
otherwise stated.
Caution Specifications are subject to change without notice.
Maximum Power Requirements
Without power outputs
+5 V ( 5%)..................................... 0.10 A
+3.3 V ( 5%).................................. 0.50 A
+12 V ( 5%)................................... 0 A
–12 V ( 5%) ................................... 0 A
Power consumption......................... 2.15 W
With power outputs
+5 V ( 5%)..................................... 0.85 A
+3.3 V ( 5%).................................. 1.25 A
+12 V ( 5%)................................... 0.25 A
–12 V ( 5%) ................................... 0.25 A
Power consumption......................... 14.38 W
Maximum Current for Fused Power Output
+5V rail .................................................. 0.75 A
+3.3V rail ............................................... 0.75 A
+12V rail ................................................ 0.25 A
–12V rail ................................................ 0.25 A
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Appendix A
Specifications
Monitoring Alert Limits (Green Status LEDs)
Voltage rail level .................................... 5% (from nominal)
Intake temperature ..................................0–50 °C
Fan speed ................................................1,500 RPM or more for all fans
in a chassis
Monitoring Accuracy
Voltage rail level readings...................... 100 mV
Intake temperature readings.................... 1 °C
Fan speed readings.................................. 50 RPM
Alert Relay Specification
Max current (switching/carry)................1 A
Max voltage ............................................30 V
Max power..............................................30 W
Max cable length ....................................20 m
Connectors
Physical
Front panel connector .............................8-pin 3.5 mm pitch,
screw-flange connector
Front panel dimensions...........................3U × 4 HP
Overall dimensions.................................13.34 × 2.03 cm (5.25 × 0.8 in.)
Weight ....................................................150 g (5.29 oz)
Environment
Maximum altitude...................................2,000 m (800 mbar)
(at 25 °C ambient temperature)
Pollution Degree.....................................2
Indoor use only.
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Appendix A
Specifications
Operating Environment
Ambient temperature range.................... 0 to 55 °C
(Tested in accordance with
IEC-60068-2-1 and
IEC-60068-2-2. Meets
MIL-PRF-28800F Class 3 low
temperature limit and
MIL-PRF-28800F Class 2 high
temperature limit.)
Relative humidity range......................... 10% to 90%, noncondensing
(Tested in accordance with
IEC-60068-2-56.)
Storage Environment
Ambient temperature range.................... –40 to 70 °C
(Tested in accordance with
IEC-60068-2-1 and
IEC-60068-2-2. Meets
MIL-PRF-28800F Class 3 limits.)
Relative humidity range......................... 5% to 95% noncondensing
(Tested in accordance with
IEC-60068-2-56.)
Shock and Vibration
Operating shock ..................................... 30 g peak, half-sine, 11 ms pulse
(Tested in accordance with
IEC-60068-2-27. Meets
MIL-PRF-28800F Class 2 limits.)
Random vibration
operating................................................. 5 to 500 Hz, 0.3 grms
Non-operating ........................................ 5 to 500 Hz, 2.4 grms
(Tested in accordance with
IEC-60068-2-64. Nonoperating
test profile exceeds the
requirements of
MIL-PRF-28800F, Class 3.)
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Appendix A
Specifications
Safety
This product meets the requirements of the following standards of safety
for electrical equipment for measurement, control, and laboratory use:
•
•
IEC 61010-1, EN 61010-1
UL 61010-1, CSA 61010-1
Note For UL and other safety certifications, refer to the product label or the Online
Product Certification section.
Electromagnetic Compatibility
This product meets the requirements of the following EMC standards for
electrical equipment for measurement, control, and laboratory use:
•
•
•
•
EN 61326 (IEC 61326): Class A emissions; Basic immunity
EN 55011 (CISPR 11): Group 1, Class A emissions
AS/NZS CISPR 11: Group 1, Class A emissions
FCC 47 CFR Part 15B: Class A emissions
ICES-001: Class A emissions
Note For the standards applied to assess the EMC of this product, refer to the Online
Product Certification section.
Note For EMC compliance, operate this product according to the documentation.
CE Compliance
This product meets the essential requirements of applicable European
Directives as follows:
•
•
2006/95/EC; Low-Voltage Directive (safety)
2004/108/EC; Electromagnetic Compatibility Directive (EMC)
Online Product Certification
Refer to the product Declaration of Conformity (DoC) for additional
regulatory compliance information. To obtain product certifications and
the DoC for this product, visit ni.com/certification, search by model
number or product line, and click the appropriate link in the Certification
column.
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Appendix A
Specifications
Environmental Management
NI is committed to designing and manufacturing products in an
environmentally responsible manner. NI recognizes that eliminating
certain hazardous substances from our products is beneficial to the
environment and to NI customers.
For additional environmental information, refer to the NI and the
Environment Web page at ni.com/environment. This page contains the
environmental regulations and directives with which NI complies, as well
as other environmental information not included in this document.
Waste Electrical and Electronic Equipment (WEEE)
EU Customers At the end of the life cycle, all products must be sent to a WEEE recycling
center. For more information about WEEE recycling centers and National Instruments
WEEE initiatives, visit ni.com/environment/weee.
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National Instruments
National Instruments
(RoHS)
Ё
ড়㾘ᗻֵᙃˈ䇋ⱏᔩ ni.com/environment/rohs_chinaDŽ
RoHS
ni.com/environment/rohs_china
(For information about China RoHS compliance, go to
.)
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B
Technical Support and
Professional Services
Visit the following sections of the award-winning National Instruments
Web site at ni.comfor technical support and professional services:
•
Support—Technical support resources at ni.com/supportinclude
the following:
–
Self-Help Technical Resources—For answers and solutions,
visit ni.com/supportfor software drivers and updates, a
searchable KnowledgeBase, product manuals, step-by-step
troubleshooting wizards, thousands of example programs,
tutorials, application notes, instrument drivers, and so on.
Registered users also receive access to the NI Discussion Forums
at ni.com/forums. NI Applications Engineers make sure every
question submitted online receives an answer.
–
Standard Service Program Membership—This program
entitles members to direct access to NI Applications Engineers
via phone and email for one-to-one technical support as well as
exclusive access to on demand training modules via the Services
Resource Center. NI offers complementary membership for a full
year after purchase, after which you may renew to continue your
benefits.
For information about other technical support options in your
area, visit ni.com/services, or contact your local office at
ni.com/contact.
•
•
Training and Certification—Visit ni.com/trainingfor
self-paced training, eLearning virtual classrooms, interactive CDs,
and Certification program information. You also can register for
instructor-led, hands-on courses at locations around the world.
System Integration—If you have time constraints, limited in-house
technical resources, or other project challenges, National Instruments
Alliance Partner members can help. To learn more, call your local
NI office or visit ni.com/alliance.
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Appendix B
Technical Support and Professional Services
•
Declaration of Conformity (DoC)—A DoC is our claim of
compliance with the Council of the European Communities using
the manufacturer’s declaration of conformity. This system affords
the user protection for electromagnetic compatibility (EMC) and
product safety. You can obtain the DoC for your product by visiting
ni.com/certification.
•
Calibration Certificate—If your product supports calibration,
you can obtain the calibration certificate for your product at
ni.com/calibration.
If you searched ni.comand could not find the answers you need, contact
your local office or NI corporate headquarters. Phone numbers for our
worldwide offices are listed at the front of this manual. You also can visit
the Worldwide Offices section of ni.com/niglobalto access the branch
office Web sites, which provide up-to-date contact information, support
phone numbers, email addresses, and current events.
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Glossary
Symbol
Prefix
pico
Value
10–12
10–9
10– 6
10–3
103
p
n
nano
micro
milli
kilo
μ
m
k
M
G
T
mega
giga
106
109
tera
1012
Numbers/Symbols
°
degrees
per
/
%
percent
plus or minus
+5 V
+5 VDC source signal
+3.3 VDC source signal
+12 VDC source signal
–12 VDC source signal
+3.3 V
+12 V
–12 V
A
A
amperes
AC
alternating current
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Glossary
API
application programming interface
B
backplane
An assembly, typically a printed circuit board, with connectors and signal
paths that bus the connector pins.
C
C
Celsius
CFR
cm
Code of Federal Regulations
Centimeters
COM
A common terminal of the relay that either connects to NO or NC.
See also NO or NC.
CompactPCI
An adaptation of the Peripheral Component Interconnect (PCI)
Specification 2.1 or later for industrial and/or embedded applications
requiring a more robust mechanical form factor than desktop PCI. It
uses industry standard mechanical components and high-performance
connector technologies to provide an optimized system intended for rugged
applications. It is electrically compatible with the PCI Specification, which
enables low-cost PCI components to be utilized in a mechanical form factor
suited for rugged environments.
CSA
Canadian Standards Association
D
DC
direct current
DoC
driver
Declaration of Conformity
Software that communicates commands to control a specific board.
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Glossary
E
electromechanical
relay
Electromechanical relay made of a coil, an armature mechanism, and
electrical contacts. When the coil is energized, the induced magnetic field
moves the armature that opens or closes the contacts.
EMC
Electromagnetic Compatibility
F
FCC
Federal Communications Commission
filler panel
FPGA
fuse
A blank module front panel used to fill empty slots in the chassis.
Field Programmable Gate Array
A circuit protection device that prevents overcurrent draw.
See also self-resetting fuse.
G
g
(1) grams; (2) a measure of acceleration equal to 9.8 m/s2
gRMS
A measure of random vibration; the root mean square of acceleration levels
in a random vibration test profile.
H
Hz
Hertz; cycles per second
I
IEC
International Electrotechnical Commission—An organization that sets
international electrical and electronics standards.
IEEE
in.
Institute of Electrical and Electronics Engineers
inches
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Glossary
L
LED
Light-Emitting Diode
meters
M
m
MAX
Measurement & Automation Explorer—A controlled, centralized
configuration environment that allows you to configure all of your
NI devices.
ms
milliseconds
N
NI
National Instruments
NO
The normally-open terminal of a relay that connects to the common (COM)
terminal only when the relay coil is energized.
NC
The normally-closed terminal of a relay that connects to the common
(COM) terminal only when the relay coil is de-energized.
O
oz
ounces
P
PCI
Peripheral Component Interconnect—A high-performance expansion bus
architecture originally developed by Intel to replace ISA and EISA. It offers
a theoretical maximum transfer rate of 132 MB/s.
PXI
PCI eXtensions for Instrumentation
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Glossary
R
RMS
Root Mean Square
RPM
revolutions per minute—units for velocity
S
s
seconds
self-resetting fuse
A fuse that acts as an open circuit only when current is overdrawn. Once
the overdraw ends the fuse returns to normal closed circuit operation.
system controller
A module configured for installation in slot 1 of a PXI chassis. This device
is unique in the PXI system in that it performs the system controller
functions, including clock sourcing and arbitration for data transfers across
the backplane. Installing such a device into any other slot can damage the
device, the PXI backplane, or both.
U
UL
Underwriter’s Laboratories
V
V
volts
watts
W
W
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Index
A
F
about the NI PXI-8250, 1-1
accuracy, monitoring, A-2
additional monitoring features, 3-4
alert limits, monitoring, A-2
alert relay
fan monitoring, 3-4
features of the NI PXI-8250, 1-1
front panel connector, 3-5
alert relay pins, 3-7
power output pins, 3-7
front panel LEDs, 3-4
pins, 3-7
fused power output specifications, A-1
C
calibration certificate (NI resources), B-2
configuration and installation, 2-1
NI PXI-8250, 2-5
getting started with the NI PXI-8250, 1-1
connector
H
front panel, 3-5
hardware
installation, 2-1
introduction, 1-1
overview, 3-1
conventions used in the manual, vii
D
specifications, A-1
help, technical support, B-1
Declaration of Conformity (NI resources), B-2
diagnostic tools (NI resources), B-1
documentation
I
conventions used in manual, vii
NI resources, B-1
drivers (NI resources), B-1
information, safety, 1-2
installing
software, 2-1
instrument drivers (NI resources), B-1
E
environmental specifications, A-2
examples (NI resources), B-1
K
KnowledgeBase, B-1
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Index
L
P
LEDs
physical specifications, A-2
pins
front panel, 3-4
user, 3-5
alert relay, 3-7
power output, 3-7
power output pins, 3-7
programming
M
API, 1-2
maximum power requirements
with power outputs, A-1
without power outputs, A-1
monitoring
accuracy specifications, A-2
alert limit specifications, A-2
fan, 3-4
related documentation, viii
requirements, maximum power
without power outputs, A-1
voltage rail level, 3-3
N
services, B-1
information, 1-2
specifications, A-4
shock and vibration specifications, A-3
NI PXI-8250
about, 1-1
configuration, 2-5
features, 1-1
installation, 2-1
NI resources, B-1
getting started, 1-2
introduction, 1-1
specifications, A-1
alert relay, A-2
software, 1-2
connectors, A-2
NI support and services, B-1
environmental, A-2
fused power output, A-1
maximum power (with power
outputs), A-1
maximum power (without power
outputs), A-1
monitoring accuracy, A-2
monitoring alert limits, A-2
physical, A-2
O
operating environment specifications, A-3
overview
front panel connector, 3-5
front panel LEDs, 3-4
hardware, 3-1
shock and vibration, A-3
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ni.com
Index
support, technical, B-1
system
U
monitoring, 3-3
vibration specifications, A-3
voltage rail level monitoring, 3-3
T
technical support, B-1
temperature monitoring, 3-3
W
training and certification (NI resources), B-1
troubleshooting (NI resources), B-1
Web resources, B-1
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