NI PCIe-8255R Quick Start Guide
The NI PCIe-8255R is an IEEE 1394a1 and IEEE 1394b interface device
for PCI Express (PCIe) with reconfigurable I/O (RIO). This document
explains how to install and configure the NI 8255R.
What You Need to Get Started
You need the following items to set up and use the NI 8255R:
❑ NI Vision Acquisition Software 8.2 or later
❑ NI Vision Acquisition Software Release Notes
❑ Computer running Windows 2000/XP with at least one PCIe slot
❑ IEEE 1394 camera
❑ 9-pin IEEE 1394 cable for interfacing to IEEE 1394b cameras
❑ 6-pin to 9-pin cable or 6-pin to 9-pin adapter for interfacing to
IEEE 1394a cameras
❑ External power supply to support powering isolated outputs
❑ Optional software packages and documentation:
– NI Vision Development Module
– NI Vision Builder for Automated Inspection
–LabVIEW
– LabVIEW FPGA Module
™
– LabWindows
1
To connect an IEEE 1394a camera to the NI 8255R, you will need a 6-pin to 9-pin cable or a 6-pin to 9-pin adapter.
/CVI
™
Optional Equipment
National Instruments offers a variety of products for use with the
NI 8255R, including the following:
• Digital I/O cable and horizontal DIN rail terminal block
(part number 778790-01)
1
• Digital I/O cable and vertical DIN rail terminal block
(part number 778791-01)
1
• NI Vision I/O Terminal Block and Prototyping Accessory
(part number 779166-01)
1
• 24 V, 50 W power supply (part number 778794-01) for powering
isolated outputs
• Sony IEEE 1394a high resolution monochrome camera
(part number 778849-01)
• Basler IEEE 1394a standard resolution monochrome camera
(part number 778785-01)
• LED ringlight and constant current source (part number 778787-01)
• 12 mm fixed focal length lens (part number 778789-01)
For specific information about these products, refer to the
National Instruments catalog, visit
ni.com, or contact the National
Instruments office nearest you.
Safety Information
Caution The following paragraphs contain important safety information you must follow
when installing and operating the device.
Do not operate the device in a manner not specified in the documentation.
Misuse of the device may result in a hazard and may compromise the safety
protection built into the device. If the device is damaged, turn it off and do
not use it until service-trained personnel can check its safety. If necessary,
return the device to National Instruments for repair.
Keep away from live circuits. Do not remove equipment covers or shields
unless you are trained to do so. If signal wires are connected to the device,
hazardous voltages can exist even when the equipment is turned off. To
avoid a shock hazard, do not perform procedures involving cover or shield
removal unless you are qualified to do so. Disconnect all field power prior
to removing covers or shields.
1
When using this accessory with the NI 8255R, three of the digital I/O signals on the device are not accessible. Refer to the
Connectors section of the NI PCIe-8255R User Manual for more information.
NI PCIe-8255R User Manual 2 ni.com
If the device is rated for use with hazardous voltages (>30 V
or 60 V
), it may require a safety earth-ground connection wire. Refer to
dc
, 42.4 Vpk,
rms
the device specifications for maximum voltage ratings.
Because of the danger of introducing additional hazards, do not install
unauthorized parts or modify the device. Use the device only with the
chassis, modules, accessories, and cables specified in the installation
instructions. All covers and filler panels must be installed while operating
the device.
Do not operate the device in an explosive atmosphere or where flammable
gases or fumes may be present. Operate the device only at or below the
pollution degree stated in the specifications. Pollution consists of any
foreign matter—solid, liquid, or gas—that may reduce dielectric strength
or surface resistivity. The following is a description of pollution degrees.
• Pollution Degree 1—No pollution or only dry, nonconductive
pollution occurs. The pollution has no effect.
• Pollution Degree 2—Normally only nonconductive pollution occurs.
Occasionally, nonconductive pollution becomes conductive because of
condensation.
• Pollution Degree 3—Conductive pollution or dry, nonconductive
pollution occurs. Nonconductive pollution becomes conductive
because of condensation.
Clean the device and accessories by brushing off light dust with a soft,
nonmetallic brush. Remove other contaminants with a stiff, nonmetallic
brush. The unit must be completely dry and free from contaminants before
returning it to service.
Yo u must insulate signal connections for the maximum voltage for which
the device is rated. Do not exceed the maximum ratings for the device.
Remove power from signal lines before connection to or disconnection
from the device.
Caution National Instruments measurement products may be classified as either
Measurement Category I or II. Operate products at or below the Measurement Category
level specified in the hardware specifications.
Measurement Category
voltages
2
and transient stresses (overvoltage) from the circuit to which they
1
: Measurement circuits are subjected to working
are connected during measurement or test. Measurement Category
establishes standardized impulse withstand voltage levels that commonly
1
Measurement Categories as defined in electrical safety standard IEC 61010-1.
2
Working voltage is the highest rms value of an AC or DC voltage that can occur across any particular insulation.
© National Instruments Corporation 3 NI PCIe-8255R User Manual
occur in electrical distribution systems. The following is a description of
Measurement (Installation
1
) Categories:
• Measurement Category I is for measurements performed on circuits
not directly connected to the electrical distribution system referred to
as MAINS
2
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 equipment, circuits powered by regulated low-voltage sources,
and electronics.
• Measurement 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 (e.g., 115 V for U.S. or 230 V for Europe).
Examples of Measurement Category II are measurements performed
on household appliances, portable tools, and similar products.
• Measurement 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.
• Measurement 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.
Unpacking
The NI 8255R ships in an antistatic package to prevent electrostatic
discharge from damaging device components. To avoid such damage in
handling the device, take the following precautions:
• Ground yourself via a grounding strap or by holding a grounded object,
such as the computer chassis.
• Touch the antistatic package to a metal part of the computer chassis
before removing the device from the package.
Caution Never touch the exposed pins of connectors.
1
Measurement Category is also referred to as Installation Category.
2
MAINS is defined as the (hazardous live) electrical supply system to which equipment is designed to be connected for the
purpose of powering the equipment. Suitably rated measuring circuits may be connected to the MAINS for measuring
purposes.
NI PCIe-8255R User Manual 4 ni.com
Installation
Caution To protect yourself and the computer from electrical hazards, the computer must
remain unplugged until the installation is complete.
Remove the device from the package and inspect it for loose components
or any other signs of damage. Notify National Instruments if the device
appears damaged in any way. Do not install a damaged device in the
computer.
Store the NI 8255R in the antistatic package when not in use.
The following instructions are for general installation. Refer to the
documentation provided by your computer manufacturer for specific
instructions and warnings about installing hardware in the computer. Refer
to the Specifications section for a list of the typical power requirements for
the NI 8255R.
1. Install NI Vision Acquisition Software before installing the NI 8255R
device. Refer to the NI Vision Acquisition Software Release Notes for
installation and configuration instructions.
2. Power off and unplug the computer.
3. Remove the computer cover to expose the expansion slots.
Caution Installing a PCIe device into a PCI, PCI-X, AGP, or any non-PCIe slot can
damage both the computer motherboard and the device. If you are unsure of the difference
between connector types, do not install the device. Refer to the documentation provided by
your computer manufacturer to determine the correct slot in which to install the NI 8255R.
4. Choose an unused x1 or larger PCIe slot, and remove the
corresponding expansion slot cover on the back panel of the computer.
Figure 1 shows the different types of expansion slots available on most
computers.
Note The NI 8255R is intended for a x1 PCIe slot. The NI 8255R will fit into, and can be
used in a x4, x8, or x16 PCIe slot.
© National Instruments Corporation 5 NI PCIe-8255R User Manual
1
2
3
4
1 PCI 32-bit Connector
2 PCI 64-bit and/or PCI-X Connector
3 PCIe x1 Connector
4 PCIe x16 Connector
Figure 1. PC Expansion Slots
5. Touch a metal part on the computer case to discharge any static
electricity on your clothes or body before handling the NI 8255R.
Static electricity can damage the device.
6. Remove the NI 8255R from the antistatic package and gently rock the
NI 8255R into the slot. The connection may be tight, but do not force
the device into place.
Note Check that the bracket of the NI 8255R lines up with the hole in the back panel rail
of the computer chassis.
7. Unless your computer secures expansion devices in a different manner,
screw the mounting bracket of the device to the back panel rail of the
computer.
NI PCIe-8255R User Manual 6 ni.com
8. To provide power to your camera, connect an unused power connector
from the ATX power supply on your computer to the camera power
ATX connector on your NI 8255R.
9. Replace the computer cover.
10. Connect the IEEE 1394 cable to your camera. Refer to your camera
manufacturer documentation for specific instructions about how to
connect the IEEE 1394 cable to your camera.
11. Connect the IEEE 1394 cable to an IEEE 1394 connector on the
NI 8255R front panel. Refer to Figure 2 for the location of the
IEEE 1394b bilingual connectors on the NI 8255R. If you are using an
IEEE 1394a cable, an IEEE 1394a to IEEE 1394b adapter is required.
Alternatively, you can use an IEEE 1394a to IEEE 1394b cable.
12. Plug in and power on the computer.
The NI 8255R is now installed and your camera is connected.
Refer to Figure 2 for information about placement of the connectors on the
NI 8255R.
1
2
3
4
1 IEEE 1394b Bilingual Connector
2 ISO/ATX Power Status LEDs
3 IEEE 1394b Bilingual Connector
NI PCIe-8255R
FOR PATENTS: NI.COM/PATENTS
5
4 44-Pin D-SUB Connector
5 Camera Power ATX Connector
Figure 2. NI 8255R Connectors
© National Instruments Corporation 7 NI PCIe-8255R User Manual
Wiring Isolated Output Power to the NI 8255R
Complete the following steps to connect power for the isolated outputs to
the NI 8255R.
Caution Do not connect the NI 8255R isolated power to a source less than 5 VDC or
greater than 30 VDC. Doing so could damage the NI 8255R device.
1. Complete this step if you are using the NI desktop power supply
(part number 778794-01). If you are using a power supply other than
the NI desktop power supply skip this step and proceed to step 2.
a. Disconnect the 4-position power connector from the power
supply, as shown in Figure 3.
1
2
3
1 4-Position Power Connector
2 V Position
Figure 3. Removing the 4-Position Power Connector from the Power Supply
4
3 C Position
4 Power Supply Wire
b. Depending on your connection method, reconnect the V
C
wires to one of the following options:
iso
•V
iso
•V
iso
•V
iso
and C
and C
and C
on the 44-pin D-SUB
iso
on the DIN rail terminal block
iso
on the NI Vision I/O Terminal Block and
iso
Prototyping Accessory
iso
and
NI PCIe-8255R User Manual 8 ni.com
Refer to Table 1 for a summary of the isolated power supply
connections.
.
Table 1. Isolated Power Supply Connection Options
Connection Method V
iso
C
iso
Custom cable 10, 25 14, 26, 29, 33, 36, 39, 42
44-pin D-SUB to 37-pin terminal block 17, 33 12, 16, 18, 28, 32, 34
44-pin D-SUB to 37-pin NI Vision I/O
V
terminal C
iso
terminal
iso
Terminal Block
2. Complete this step if you are using a power supply other than the NI
desktop power supply. If you are using the NI desktop power supply,
skip this step and proceed to step 3.
a. Wire the voltage output and the common-mode (ground) output of
the isolated power supply to one of the following options:
•V
•V
•V
and C
iso
and C
iso
iso
and C
on the 37-pin terminal block
iso
on the 44-pin D-SUB
iso
on the NI Vision I/O Terminal Block and
iso
Prototyping Accessory
Refer to Table 1 for a summary of the isolated power supply
connections.
3. (Optional) To suppress electromagnetic interference, install a ferrite on
the power supply cable as close to the connection to the NI 8255R as
possible. Wrap the power supply cable around the ferrite two times, as
shown in Figures 4 and 5.
2
1
1 Power Supply Output Cable 2Ferrite
Figure 4. Installing a Ferrite Connector on the Power Supply Cable
© National Instruments Corporation 9 NI PCIe-8255R User Manual
1 Power Supply Output Cable 2Ferrite
Figure 5. Closed Ferrite on the Power Supply Cable
4. Plug the power supply cord into an outlet.
The orange LED on the NI 8255R front panel will illuminate when the
computer is on and an isolated power supply is properly connected.
Configuring the NI 8255R
Caution Updating your computer to Microsoft Windows XP Service Pack 2 may decrease
the performance of your IEEE 1394 devices. Refer to the NI KnowledgeBase article
3J0A446W or Microsoft Knowledge Base article 885222 for more information.
After you have installed the NI 8255R and powered on your computer,
Windows will recognize the device and assign resources to it. Use
Measurement & Automation Explorer (MAX), the National Instruments
configuration utility, to configure the IEEE 1394 camera connected to the
NI 8255R for acquisition.
2
1
Note You must install NI Vision Acquisition Software 8.2 or later before configuring your
camera in MAX. Refer to the NI Vision Acquisition Release Notes for information about
configuring your camera.
Related Documentation
The following documents contain additional information about the
NI 8255R:
• NI Vision Acquisition Software Release Notes—This document
contains information about how to install the driver software.
• LabVIEW Help—This document contains reference information for
the NI-IMAQ I/O shutdown states VIs, terminal references for the
configurable I/O module on the NI-IMAQ I/O device, and parameter
NI PCIe-8255R User Manual 10 ni.com
Specifications
These specifications are typical at 25 °C, unless otherwise stated.
Power Requirements
IEEE 1394 bus power1...........................18 W, maximum
references for the parameters you can set for the NI-IMAQ I/O device
in the Read/Write control. To locate the information, search for
"NI-IMAQ I/O" in LabVIEW Help.
(sharedbybothports)
Isolated supply
Camera interface
TTL Inputs and Outputs
Digital logic levels
Input low voltage (VIL) 0 V 0.5 V
Input high voltage (VIH) 2.2 V 5 V
Output low voltage (VOL), at 5 mA — 0.4 V
Output high voltage (VOH), at 5 mA 2.4 V —
TTL Inputs
Number of channels ............................... 2
Maximum pulse rate...............................2 MHz
Minimum pulse detected........................ 500 ns
2
...................................... 5 VDC to 30 VDC
3
................................... IEEE 1394b, compatible with
IEEE 1394a cameras
Level Minimum Maximum
Power-on state........................................ Input (high-impedance)
61.9 kΩ pull-up to 5V
1
The bus power specification assumes that power is provided to the NI 8255R device from the host computer power supply via
the ATX power connector. If power is not supplied through the ATX power connector, camera power is supplied by the PCIe
bus and should be limited to 3 W, shared by both ports.
2
Do not draw more than 100 mA from 30 V isolated outputs. Do not draw more than 50 mA from 5 V isolated outputs.
3
To connect an IEEE 1394a camera to the NI 8255R, you will need a 6-pin to 9-pin cable or a 6-pin to 9-pin adapter.
© National Instruments Corporation 11 NI PCIe-8255R User Manual
TTL Outputs
Number of channels................................10
Output voltage range ..............................0 V to 5 V
Maximum pulse rate ...............................2 MHz
Optically Isolated Inputs and Outputs
Isolated (Current Sinking) Inputs
Number of channels................................13
Input voltage range .................................0 V to 30 V
Input ON voltage .............................3.5 V to 30 V
Input OFF voltage............................0 V to 2 V
Turn-on current.......................................7.1 mA, typical
Maximum pulse rate ...............................100 kHz
Minimum pulse detected ........................10 μs
Reverse polarity protection.....................Yes, –30 V
14 mA, maximum
Isolated (Current Sourcing) Outputs
Number of channels................................4
On-state voltage range ............................5 V to 30 V, maximum
Maximum on-state voltage
drop from V .....................................1.2 V at 100 mA
Output current
5 V isopower....................................50 mA, maximum
24 V isopower..................................100 mA, maximum
30 V isopower..................................100 mA, maximum
Maximum pulse rate ...............................10 kHz (maximum load
resistance 100 kΩ)
Minimum pulse generated ......................100 μs
Reverse polarity protection.....................Yes
NI PCIe-8255R User Manual 12 ni.com
IEEE 1394 Interface
Number of ports ..................................... 2
Speed...................................................... 100, 200, 400, or 800 Mbps
PCI Express Interface
PCI Express compliance ........................ Version 1.0a
Native link width.................................... x1
Up-plugging link width availability ....... x4, x8, x16
Physical Characteristics
Dimensions............................................. 11.2 cm × 16.8 cm
Weight.................................................... 130 g (4.5 oz)
Environment
The NI 8255R device is intended for indoor use only.
Operating temperature............................ 0 °C to 55 °C
(4.4 in. × 6.6 in.)
Storage temperature ............................... –20 °C to 70 °C
Relative humidity ................................... 5% to 90%, noncondensing
Pollution Degree .................................... 2
Caution Do not use the NI 8255R for connection to signals within Measurement
Categories II, III, or IV.
Measurement Category .......................... I
Approved at altitudes up to 2,000 m.
© National Instruments Corporation 13 NI PCIe-8255R User Manual
Safety
The NI 8255R is designed to meet the requirements of the following
standards of safety for electrical equipment for measurement, control, and
laboratory use:
• EN 61010-1, IEC 61010-1
• UL 61010-1, CAN/CSA-C22.2 No. 61010-1
Note For UL and other safety considerations, refer to the product label, or visit
ni.com/certification, search by model number or product line, and click the
appropriate link in the Certification column.
Electromagnetic Compatibility
The NI 8255R is designed to meet the requirements of the following
standards of EMC for electrical equipment for measurement, control, and
laboratory use:
• EN 61326 EMC requirements; Minimum Immunity
• EN 55011 Emissions; Group 1, Class A
• CE, C-Tick, ICES, and FCC Part 15 Emissions; Class A
Note For EMC compliance, operate this device with shielded cabling.
CE Compliance
The NI 8255R meets the essential requirements of applicable European
Directives, as amended for CE marking, as follows:
• 73/23/EEC; Low-Voltage Directive (safety)
• 89/336/EEC; Electromagnetic Compatibility Directive (EMC)
Note Refer to the Declaration of Conformity (DoC) for this product for any additional
regulatory compliance information. To obtain the DoC for this product, visit
certification
in the Certification column.
Note The NI 8255R may experience temporary data interruption if exposed to
electrostatic discharge (ESD).
, search by model number or product line, and click the appropriate link
ni.com/
Waste Electrical and Electronic Equipment (WEEE)
EU Customers At the end of their 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 PCIe-8255R User Manual 14 ni.com
ni.com/environment/weee.htm.
Where to Go for Support
The National Instruments Web site is your complete resource for technical
support. At
troubleshooting and application development self-help resources to email
and phone assistance from NI Application Engineers.
A Declaration of Conformity (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
electronic compatibility (EMC) and product safety. You can obtain the DoC
for your product by visiting
supports calibration, you can obtain the calibration certificate for your
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© National Instruments Corporation 15 NI PCIe-8255R User Manual
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