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This manual contains detailed instructions for installing and configuring
the National Instruments PXIe-8133 embedded computer kit.
How to Use the Documentation Set
Begin by reading the NI PXIe-8133 Installation Guide, a brief quick-start
guide that describes how to install and get started with your controller.
This manual, the NI PXIe-8133 User Manual, contains more details about
changing the installation or configuration from the defaults and using the
hardware.
Conventions
The following conventions appear in this manual:
»The » symbol leads you through nested menu items and dialog box options
to a final action. The sequence Options»Settings»General directs you to
pull down the Options menu, select the Settings item, and select General
from the last dialog box.
This icon denotes a tip, which alerts you to advisory information.
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, or a system crash.
boldBold 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.
italicItalic 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.
This chapter provides overview information for PXI Express and the
NI PXIe-8133 embedded controller.
Benefits of PXI Express
The PXI (PCI eXtensions for Instrumentation) industry standard, an open
specification governed by the PXI Systems Alliance (PXISA), has quickly
gained adoption and grown in prevalence in test, measurement, and control
systems since its release in 1998. One of the key elements driving the rapid
adoption of PXI is its use of PCI in the communication backplane. As
the commercial PC industry has improved the available bus bandwidth
by evolving PCI to PCI Express, PXI is now able to meet even more
application needs by integrating PCI Express into the PXI standard. By
taking advantage of PCI Express technology in the backplane, PXI Express
increases the available PXI bandwidth from up to 132 MB/s to u p to 8 GB/s
for a more than 60x improvement in bandwidth.
PXI Express maximizes both hardware and software compatibility with
PXI modules. PXI Express hybrid slots deliver both PCI and PCI Express
signaling to accept devices that use PXI communication and triggering or
the newer PXI Express standard. Software compatibility is maintained
because PCI Express uses the same OS and driver model as PCI, resulting
in complete software compatibility among PCI-based systems, for example
PXI, and PCI Express-based systems such as PXI Express.
1
PXI Express, like PXI, leverages from the CompactPCI specification to
define a rugged, modular form factor that offers superior mechanical
integrity and easy installation and removal of hardware components.
PXI Express products offer higher and more carefully defined levels of
environmental performance required by the shock, vibration, temperature,
and humidity extremes of industrial environments. Mandatory
environmental testing and active cooling is added to the CompactPCI
mechanical specification to ease system integration and ensure multivendor
interoperability.
The demanding timing and synchronization requirements of
instrumentation systems are met by the integrated features of PXI Express.
Not only are the trigger bus, 10 MHz system reference clock, and star
trigger bus available in PXI retained by PXI Express, but new timing and
synchronization features that include a 100 MHz differential system
reference clock for the synchronization of multiple modules and three
differential star trigger buses for the distribution of precise clock and trigger
signals have been added. Differential timing and synchronization signals
provide PXI Express systems with increased noise immunity and the ability
to transmit clock signals at higher frequencies.
The NI PXIe-8133 PXI Express/CompactPCI Express embedded computer
is a high bandwidth PXI Express/CompactPCI Express-compatible system
controller. The NI PXIe-8133 controller integrates standard I/O features
in a single unit by using state-of-the-art packaging. Combining an
NI PXIe-8133 embedded controller with a PXI Express-compatible
chassis, such as the NI PXIe-1082, results in a fully PC-compatible
computer in a compact, rugged package.
The standard I/O on each module includes DVI-I video, one RS-232 serial
port, a parallel port, four high-speed USB 2.0 ports, a PCI-based GPIB
controller, two Gigabit Ethernet connectors, a reset button, and
PXI Express triggers.
The NI PXIe-8133 has a quad-core Intel Core i7 Processor 820 QM, Dual
Channel DDR3, 1333 MHz memory controller, all the standard I/O, and an
integrated hard drive. It also has an ExpressCard/34 expansion slot.
Functional Overview
This section contains functional descriptions of each major logic block on
the NI PXIe-8133 embedded computer.
NI PXIe-8133 Functional Description
The NI PXIe-8133 is a modular PC in a PXI Express 3U-size form factor.
Figure 1-1 is a functional block diagram of the NI PXIe-8133.
Following the diagram is a description of each logic block shown.
The NI PXIe-8133 consists of the following logic blocks on the CPU
module and the I/O (daughter card) module. The CPU module has the
following logic blocks:
•FPGA Socket189 is the socket definition for the Intel Core i7
processor.
•The SO-DIMM block consists of two 64-bit DDR3 SDRAM sockets
that can hold up to 4 GB each.
•The CPU connects to the DDR3 SDRAM, PLX 8632 switch, and
Intel 5 Series chipset.
•The SMB to PXI Express Trigger provides a routable connection of the
PXI Express triggers to/from the SMB on the front panel.
•The ATI Radeon E2400 Embedded GPU drives the graphics.
•The Watchdog Timer block consists of a watchdog timer that can reset
the controller or generate a trigger.
•The Intel 5 Series chipset connects to the PCI, USB, Serial ATA,
ExpressCard, PXI Express, and LPC buses.
•The USB Connectors connect the Intel 5 Series chipset to the Hi-Speed
USB 2.0 interface.
•The Serial ATA Hard Disk is a 120 GB or larger notebook hard disk.
The Serial ATA interface enables transfer rates up to 150 MB/s. The
hard disk also supports Native Command Queuing.
•The PXI Express Connector connects the NI PXIe-8133 to the
PXI Express/CompactPCI Express backplane.
•The Super I/O block represents the other peripherals supplied by the
NI PXIe-8133. The NI PXIe-8133 has one serial port, and an ECP/EPP
parallel port.
•Both the 82577 and 82574 Gigabit Enet ports connect to either
10 Mbit, 100 Mbit, or 1,000 Mbit Ethernet interfaces. Both ports are
housed in a dual stacked Ethernet connector.
•The GPIB block contains the GPIB interface.
•The ExpressCard/34 slot accommodates an ExpressCard/34 module.
National Instruments Software
1
National Instruments has developed several software tools you can use with
the NI PXIe-8133.
National Instruments’ hardware and software work together to help you
make the most of your PXI Express system. The LabVIEW, Measurement
™
Studio, and LabWindows
/CVI™ application development environments
combine with leading hardware drivers such as NI-DAQmx to provide
exceptional control of NI hardware. Instrument drivers are available at
ni.com/idnet to simplify communication with instruments over a variety
of buses.
LabVIEW is a powerful and easy-to-use graphical programming
environment you can use to acquire data from thousands of different
instruments including USB, IEEE 488.2, VXI, serial, PLCs, and plug-in
boards. LabVIEW helps you convert acquired data into meaningful results
using powerful data analysis routines. Add-on tools provide additional
specialized functionality. For more information visit
ni.com/toolkits.
and
1
The extended-temperature, 24/7 option controller provides a 80 GB hard drive.
If you prefer to use Microsoft’s Visual Basic, Visual C++, and
Visual Studio .NET for the core of your application, Measurement Studio
adds tools for Measurement and Automation to each language. For more
information visit
ni.com/mstudio.
LabWindows/CVI is an interactive ANSI C programming environment
designed for building virtual instrument applications. LabWindows/CVI
delivers a drag-and-drop editor for building user interfaces, a complete
ANSI C environment for building your test program logic, and a collection
of automated code generation tools, as well as utilities for building
automated test systems, monitoring applications, or laboratory
experiments. For more information visit
ni.com/lwcvi.
NI-DAQmx provides an extensive library of functions that you can call
from your application development environment or interactive environment
such as NI Signal Express. These functions provide an intuitive API for
National Instruments’ multifunction DAQ products. Features available
include analog input (A/D conversion), buffered data acquisition
(high-speed A/D conversion), analog output (D/A conversion), waveform
generation, digital I/O, counter/timer operations, SCXI signal conditioning,
RTSI or PXI Express synchronization, self-calibration, messaging, and
acquiring data to extended memory. For more information visit
ni.com/daq.
National Instruments’ Modular Instruments use specialized drivers suited
to each product’s specialization. Express VIs provide customized,
interactive programming of instruments in a single interface and soft front
panels provide an interface for testing the functionality of each instrument
with no programming required. NI Switches, DMMs, High-Speed DIO,
High-Speed Digitizers, and Sources each have customized drivers for
high-end modular instrumentation systems. RF applications leverage
two drivers, NI-RFSG and NI-RFSA and Dynamic Signal Acquisition is
available through NI-DAQmx. For more information visit
modularinstruments
.
ni.com/
You can expand the timing and triggering functionality of your PXI Express
system with PXI Express Timing and Synchronization products. These
products provide precision clock sources, custom routing of triggers for
multi-chassis synchronization, clock sharing, and more and are
programmed with NI-Sync. For more information visit
ni.com/pxi.
NI-VISA is the National Instruments implementation of the VISA
specification. VISA is a uniform API for communicating and controlling
USB, Serial, GPIB, PXI, PXI Express, VXI, and various other types of
instruments. This API aids in the creation of portable applications and
instrument drivers. For information on writing your own PXI Express
instrument driver with NI-VISA, refer to the NI-VISA Getting Started Manual and the
information visit
readme.txt file in the NI-VISA directory. For more
ni.com/visa.
With LabVIEW for Linux and support for over two hundred devices on
Linux with the NI-DAQmx driver, you can now create Virtual Instruments
based on the Linux OS. Instrument control in Linux has been improved by
the NI-VISA driver for Linux and NI Modular Instruments are partially
supported. For more information visit
ni.com/linux.
Use a dry, low-velocity stream of air to clean the NI PXIe-8133 controller.
If needed, use a soft-bristle brush for cleaning around components.
This chapter contains information about installing and configuring your
NI PXIe-8133 controller.
Installing the NI PXIe-8133
This section contains general installation instructions for the
NI PXIe-8133. Consult your PXI Express chassis user manual for specific
instructions and warnings.
1.Plug in your chassis before installing the NI PXIe-8133. The power
cord grounds the chassis and protects it from electrical damage while
you install the module.
Caution To protect both yourself and the chassis from electrical hazards, leave the chassis
powered off until you finish installing the NI PXIe-8133 module.
2.Remove any filler panels blocking access to the system controller slot
(slot 1) in the chassis.
3.Touch the metal part of the case to discharge any static electricity that
might be on your clothes or body.
4.Remove the protective plastic covers from the four bracket-retaining
screws as shown in Figure 2-1.
1Protective Screw Cap (4x)
Figure 2-1. Removing Protective Screw Caps
5.Make sure the injector/ejector handle is in its downward position.
Align the NI PXIe-8133 with the card guides on the top and bottom
of the system controller slot.
Caution Do not raise the injector/ejector handle as you insert the NI PXIe-8133. The
module will not insert properly unless the handle is in its downward position so that
it does not interfere with the injector rail on the chassis.
6.Hold the handle as you slowly slide the module into the chassis until
the handle catches on the injector/ejector rail.
7.Raise the injector/ejector handle until the module firmly seats
into the backplane receptacle connectors. The front panel of the
NI PXIe-8133 should be even with the front panel of the chassis.
8.Tighten the four bracket-retaining screws on the top and bottom of the
front panel to secure the NI PXIe-8133 to the chassis.
9.Check the installation.
10. Connect the keyboard and mouse to the appropriate connectors. If you
are using a PS/2 keyboard and a PS/2 mouse, a Y-splitter adapter is
available to connect both to a single USB connector. Refer to
Figure 4-1, Y-Splitter Cable.
11. Connect the DVI monitor video cable to the DVI connector, or use the
DVI-to-VGA adapter included with your controller to connect a VGA
monitor to the DVI connector.
12. Connect devices to ports as required by your system configuration.
13. Power on the chassis.
14. Verify that the controller boots. If the controller does not boot, refer
to the What if the NI PXIe-8133 does not boot? section of Chapter 5,
Troubleshooting.
Figure 2-2 shows an NI PXIe-8133 installed in the system controller slot of
a National Instruments NI PXIe-1082 chassis.
1 NI PXIe-1082 Chassis
2 NI PXIe-8133 Controller
Figure 2-2. NI PXIe-8133 Controller Installed in a PXI Express Chassis
How to Remove the Controller from the PXI Express Chassis
The NI PXIe-8133 controller is designed for easy handling. To remove the
unit from the PXI Express chassis, complete the following steps.
1.Power off the chassis.
2.Unscrew the 4 bracket-retaining screws in the front panel.
3.Press the injector/ejector handle down.
4.Slide the unit out of the chassis.
Note If the PXI Express chassis Inhibit Mode Selector Switch is not in the Default
position, any attempt to shut down the NI PXIe-8133 through the push button reset or using
Windows will result in the controller Power OK LED blinking. The user will be required
to use the Remote Inhibit pin on the Remote Inhibit and Voltage Monitoring Connector to
turn off the chassis. Refer to the PXI Express chassis user manual for details on the
functionality of the Remote Inhibit and Voltage Monitoring controls.
BIOS Setup
You can change the NI PXIe-8133 configuration settings in the BIOS setup
program. The BIOS is the low-level interface between the hardware and
operating system software that configures and tests your hardware when
you boot the system. The BIOS setup program includes menus for
configuring settings and enabling NI PXIe-8133 controller features.
Most users do not need to use the BIOS setup program, as the
NI PXIe-8133 controller ships with default settings that work well for most
configurations.
Caution Changing BIOS settings may lead to incorrect controller behavior and possibly
an unbootable controller. If this happens, follow the instructions for restoring default
settings in the System CMOS section. In general, do not change a setting unless you are
absolutely certain what it does.
Accessing BIOS Setup
Complete the following steps to start the BIOS setup program.
1.Power on or reboot your NI PXIe-8133 controller.
2.When the message
the <Delete> key. The setup program loads after a short delay.
The Main menu is displayed when you first enter the BIOS setup
program.
Use the following keys to navigate through the BIOS setup program:
•Left Arrow, Right Arrow—Use these keys to move between the
different setup menus. If you are in a submenu, these keys have no
effect, and you must press <Esc> to leave the submenu first. (To use
the arrows on the numeric keypad, you must turn off Num Lock.)
•Up Arrow, Down Arrow—Use these keys to move between the
options within a setup menu. (To use the arrows on the numeric
keypad, you must turn off Num Lock.)
•<Enter>—Use this key either to enter a submenu or display all
available settings for a highlighted configuration option.
•<Esc>—Use this key to return to the parent menu of a submenu.
At the top-level menus, this key serves as a shortcut to the Exit menu.
•<+> and <–>—Use these keys to cycle between all available settings
for a selected configuration option.
•<Tab>—Use this key to select time and date fields.
•<F9>—Use this key to load the optimal default values for BIOS
configuration settings. The optimal default values are the same as the
shipping configuration default values.
Main Menu
The most commonly accessed and modified BIOS settings are in the Main
menu. The Main menu reports the following configuration information:
•BIOS Version and Build Date—These values indicate the version of
the NI PXIe-8133 controller BIOS and the date on which the BIOS
was built.
•Processor Type, Processor Base Frequency, and Processor Core—These values indicate the type of processor used in the
NI PXIe-8133 controller, the speed of the processor, and the number of
processor cores.
•Total Memory—This value indicates the size of system RAM
detected by the BIOS.
•PXIe Chassis Information—These values indicate the overall chassis
link configuration, the link width of each link, and the link speed of
each link.
The Main menu also includes the following settings:
•System Date—This setting controls the date, which is stored in a
battery-backed real-time clock. Most operating systems also include a
way to change this setting. Use <+> and <–> in conjunction with
<Enter> and <Tab> to change these values.
•System Time—This setting controls the time of day, which is stored
in a battery-backed real-time clock. Most operating systems also
include a way to change this setting. Use <+> and <–> in conjunction
with <Enter> and <Tab> to change these values.
Advanced Menu
This menu contains BIOS settings that normally do not require
modification. If you have specific problems such as unbootable disks
or resource conflicts, you may need to examine these settings.
Caution Changing settings in this menu may result in an unstable or unbootable controller.
If this happens, follow the procedures outlined in the System CMOS section to restore
BIOS settings to their factory defaults.
The Advanced menu includes the following settings and submenus:
•PCI Subsystem Settings—Use this setting to access the PCI Subsystem Settings submenu. Refer to the PCI Subsystem Settings
Submenu section for more information.
•SATA Configuration—Use this setting to access the SATA
Configuration submenu. Refer to the SATA Configuration Submenu
section for more information.
•CPU Configuration—Use this setting to access the CPU Configuration submenu. Refer to the CPU Configuration Submenu
section for more information.
•Video Configuration—Use this setting to access the Video Configuration submenu. Refer to the Video Configuration Submenu
section for more information.
•Power/Wake Configuration—Use this setting to access the
Power/Wake Configuration submenu. Refer to the Power/Wake
Configuration Submenu section for more information.
•Clock Generator Configuration—Use this setting to access the
Clock Generator Configuration submenu. Refer to the Clock
Generator Configuration Submenu section for more information.
•ExpressCard Configuration—Use this setting to access the
ExpressCard Configuration submenu. Refer to the ExpressCard
Configuration Submenu section for more information.
•USB Configuration—Use this setting to access the USB
Configuration submenu. Refer to the USB Configuration Submenu
section for more information.
•Serial/Parallel Port Configuration—Use this setting to access
the Serial/Parallel Port Configuration submenu. Refer to the
Serial/Parallel Port Configuration Submenu section for more
information.
PCI Subsystem Settings Submenu
Use this submenu to apply alternate settings to PCI Express devices.
•64-bit Memory-Mapped IO—Use this setting to allow some
PCI memory-mapped IO to be above the 32-bit boundary. The default
value is Disabled.
•Maximum Payload—Use this setting to adjust the maximum payload
size for all PCI Express devices. If set to Auto, the BIOS will choose
an optimal value automatically. The default value is 128 Bytes.
SATA Configuration Submenu
Use this submenu to apply alternate settings to the hard disk drive (HDD)
interfaces. Normally, you do not need to modify these settings, as the
factory default settings provide the most compatible and optimal
configuration possible.
•SATA Controller—This setting specifies whether or not the onboard
SATA controller is enabled or disabled. The default value is Enabled.
mode is enabled or disabled for the SATA port. Some operating
systems, such as Windows 2000, do not support AHCI mode. You
can use this setting to disable AHCI mode and enable IDE mode
so that non-compatible OSes function correctly. The default value
is AHCI.
•Internal Drive (SATA)—This item displays the onboard SATA drive
detected in the system.
Use this submenu to apply alternate settings to the CPU. Normally, you do
not need to modify these settings, as the factory default settings provide the
most compatible and optimal configuration possible.
•Hyper Threading—This setting enables or disables Intel
Hyper-Threading technology. The default value is Enabled. Enabling
Hyper-Threading increases performance for some applications by
adding virtual CPU cores. Hyper-Threading can increase application
jitter, so care should be taken when enabling this setting on a
Real Time system. When the BIOS is configured to boot LabVIEW
Real-Time, Hyper-Threading will be automatically disabled. In order
to manually enable Hyper-Threading performance when in LabVIEW
Real-Time mode, see the LabVIEW RT Configuration Overrides
Submenu.
•
Enabled CPU Cores
cores for the processor. Valid values are 4, 2, or 1. The default value is
•Turbo Boost—This setting enables or disables Intel Turbo Boost
technology. The default value is Enabled. Enabling Turbo Boost
allows CPU cores to run at higher than their base frequency for short
durations, while other cores are idle. Enabling Turbo Boost can also
increase application jitter, so care should be taken when enabling this
setting on a Real Time system. To achieve maximum possible Turbo
Boost frequencies, also enable the C-States setting. When the BIOS is
configured to boot LabVIEW Real-time, Turbo Boost will be
automatically disabled. In order to manually enable Turbo Boost
performance when in LabVIEW Real-Time mode, see the LabVIEW
RT Configuration Overrides Submenu.
•C-States—This setting enables or disables CPU power management.
The default value is Enabled. Enabling C-States allows the processor
to put idle CPU cores to sleep, allowing active cores to run at higher
than base frequencies when Turbo Boost is enabled. Enabling C-States
can increase application jitter, so care should be taken when enabling
this setting on a Real Time system. When the BIOS is configured to
boot LabVIEW Real-time, C-States will be automatically disabled. In
order to manually enable C-States when in LabVIEW Real-Time
mode, see the LabVIEW RT Configuration Overrides Submenu.
•Hardware Prefetcher—This setting enables or disables CPU cache
hardware prefetching. The default value is Enabled when booting
LabVIEW Real-Time, enabled when booting other OSs. Enabling
hardware prefetching can increase system performance for some
applications, but can cause control algorithms to behave less
deterministically.
•Adjacent Cache Line Prefetch—This setting enables or disables
prefetching of adjacent cache lines from memory to the CPU cache.
The default value is Enabled when booting LabVIEW Real-Time,
enabled when booting other OSs. Enabling adjacent cache line
prefetching can increase system performance for some applications,
but can cause control algorithms to behave less deterministically.
Video Configuration Submenu
Use this submenu to apply alternate settings to the video configuration.
Normally, you do not need to modify these settings, as the factory default
settings provide the most compatible and optimal configuration possible.
Primary Display—This setting specifies which video adapter the
BIOS should use as the primary adapter if more than one is present.
To use an external video adapter as the primary graphics adapter,
choose Add-in Board Video. The default value is Onboard Video.
The video adapter can also be disabled by selecting
Disabling video can increase system performance for some applications
by allowing some control algorithms to behave more deterministically.
Disabled
.
Power/Wake Configuration Submenu
Use this submenu to apply alternate configurations to the power and wake
features of the chipset and controller. Normally, you do not need to modify
these settings, as the factory default settings provide the most compatible
and optimal configuration possible.
•Restore After Power Loss—This setting specifies the power state that
the controller should return to after AC power is lost. Valid values are
Stay Off and Turn On. The default is Stay Off. When set to Stay Off,
the controller will return to the soft off power state after AC power is
restored. When set to Turn On, the controller will power on when
AC power is restored.
•
Power Button Behavior
power button should behave. Valid options are
Disable
button will be controlled by the OS. When set to
will immediately power off when the power button is pressed, overriding
any OS-specific power button policy. When set to
power button has no effect. The
conjunction with the PXI Express chassis’ inhibit mode switch.
•ExpressCard WAKE#—This setting enables or disables an
ExpressCard device’s ability to wake a powered-off system. The
default value is Disabled.
•PXIe Backplane WAKE#—This setting enables or disables a
PXI Express peripheral module’s ability to wake a powered-off
system. The default value is Disabled.
•SMBus ALERT#—This setting enables or disables a System
Management device’s ability to wake a powered off system by
asserting the ALERT# signal. The default value is Disabled.
Clock Generator Configuration Submenu
Use this submenu to apply alternate configurations to the controller's
onboard clock generator. Normally, you do not need to modify these
settings, as the factory default settings provide the most compatible and
optimal configuration possible.
•Spread Spectrum—This setting enables or disables Spread Spectrum
clocking for each onboard clock generator used on the controller. The
default value is Enabled. This option should be set to Disabled to use
Jumbo Frames with the Intel 82577 LAN adapter.
ExpressCard Configuration Submenu
Use this submenu to apply alternate settings to the ExpressCard
configuration. These settings determine how much memory space,
I/O space, and PCI bus numbers will be pre-allocated for the
ExpressCard port, allowing non-PCI Express-aware operating systems to
support hot-plugging ExpressCard devices. Normally, you do not need to
modify these settings, as the factory default settings provide the most
compatible and optimal configuration possible.
•ExpressCard Resources—This setting enables or disables the setting
of the Reserved Buses, Reserved Memory, and Reserved I/O
settings. The default value for this setting is Enabled. If this setting is
disabled, the bus, memory, and I/O options disappear from this
submenu. Disabling this setting effectively sets Reserved Buses to 0, Reserved Memory to 0M, and Reserved I/O to 0K.
•Reserved Buses—This setting determines the number of PCI buses
that will be reserved by the BIOS for ExpressCard PCI-PCI bridges
that may be hot-plugged in the ExpressCard slot. The default value for
this setting is 8 PCI buses.
•Reserved Memory—This setting determines the amount of memory
space, in bytes, that will be reserved by the BIOS for PCI-PCI bridges
that may be hot-plugged in the ExpressCard slot. The default value for
this setting is 64M bytes of memory.
•Reserved I/O—This setting determines the amount of I/O space, in
bytes, that will be reserved by the BIOS for PCI-PCI bridges that may
be hot-plugged in the ExpressCard slot. The default value for this
setting is 4K bytes of I/O space.
USB Configuration Submenu
Use this submenu to apply alternate configurations to the USB ports.
Normally, you do not need to modify these settings, as the factory default
settings provide the most compatible and optimal configuration possible.
•USB Devices—This item lists the total number of devices detected in
the system, categorized by device type.
•Legacy USB Support—This setting specifies whether or not legacy
USB support is enabled. Legacy USB support refers to the ability to
use a USB keyboard and mouse during system boot or in a legacy
operating system such as DOS. The default value is Enabled.
Note Certain real-time applications may require you to disable this setting to reduce loop
time jitter. When the controller is configured to boot LabVIEW RT, legacy USB support is
automatically disabled.
•Overcurrent Reporting—This setting allows the BIOS to notify the
operating system of any USB ports which source too much current.
The default value for this setting is Disabled.
•Transfer Timeout—This setting specifies the timeout value for
Control, Bulk, and Interrupt USB transfers. The default value for this
setting is 20 seconds.
•Device Reset Timeout—This setting specifies the number of seconds
the Power-On Self Test will wait for a USB mass storage device to
start. The default is 20 seconds.
•Device Power-up Delay—This setting specifies the maximum time a
device will take before it properly reports itself to the host controller.
When set to Auto, a root port is granted 100 ms, and for a hub port, the
delay value is taken from the hub descriptor. The default value for this
setting is Auto.
•Device Power-Up Delay in Seconds—This setting specifies the
number of seconds the Power-On Self Test will wait for a USB device
or hub to power on. This setting is only visible if Device Power-Up Delay is set to Manual. The default is 5 seconds.