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VXI-USB Datasheet, PDF (1/4 Pages) National Instruments Corporation – VXIbus 3.0 features including A64 addressing and 2eVME protocol
USB Remote Controller for VXI
NI VXI-USB
◾◾ VXIbus 3.0 features including A64
addressing and 2eVME protocol
◾◾ 32 MB/s sustained throughput across
USB and VXI
◾◾ Word-serial accelerator
◾◾ USB 2.0-compatible, including
“hot plug-in” capability
◾◾ Direct trigger and interrupt control
◾◾ External VXI CLK10 synchronization
◾◾ Slot 0 capability, including Resource
Manager, slot identification, and bus
management responsibilities
◾◾ VXIplug&play compliance
◾◾ Support for register-based communication
◾◾ Direct access to VXI memory space
◾◾ Bidirectional VXI transfers
◾◾ High-performance DMA transfers using
the MITE ASIC
Operating Systems
◾◾ Windows Vista/XP/2000
Recommended Software
◾◾ LabVIEW
◾◾ LabWindows™/CVI
◾◾ Measurement Studio
Driver Software (included)
◾◾ NI-VXI/NI-VISA
Overview
The NI VXI-USB interface kit links any desktop or notebook computer to the
VXIbus using the Universal Serial Bus (USB). With the single-slot, C-sized
controller, your external computer performs as if it were plugged directly into
the VXI backplane, giving it the capability of an embedded controller. Taking
advantage of USB 2.0 technology, the VXI-USB achieves superior throughput for
block transfers and word-serial (message-based) communication in comparison
to IEEE 1394-to-VXI and GPIB-to-VXI interfaces. You can use the VXI-USB kit in
any computer running Windows Vista/XP/2000. You gain flexibility, performance,
and value by using a desktop or notebook computer for controlling your VXI system.
Hardware
The USB 2.0-compatible VXI-USB capitalizes on the higher data transfer rate
and offers hot plug-in capability so that you can easily add USB devices to
your PC and configure them without needing to power down your system. In
addition, the VXI-USB features a word-serial accelerator to improve the speed
of data transfers using word-serial protocol commands. For register-based
communication, VXI-USB performance is comparable to the 1394-to-VXI and
GPIB-to-VXI interfaces. Combining USB technology with a MITE ASIC, the
VXI-USB interface features high-speed DMA and direct interrupt and trigger
control, providing a low-cost, easy-to-use, and powerful VXI control solution.
The VXI-USB Slot 0 module connects to the computer using a thin, very flexible
USB cable for easy rack-mount system installation and configuration.
Software
The VXI-USB comes with NI-VXI/NI-VISA software, making it completely
compliant with VXIplug&play Systems Alliance specifications. You can run the
latest VXIplug&play software, including executable soft front panels, with
which you can operate the instrument immediately, and standardized LabVIEW
and LabWindows/CVI instrument drivers to simplify your programming tasks.
NI-VXI/NI-VISA comes with a VXIbus interface library that works with several
popular programming environments and compilers, including LabVIEW,
Measurement Studio, Microsoft Visual C++, Borland C++, and Microsoft Visual
Basic. Application software developed using the VXI-USB and NI-VXI/NI-VISA
software is compatible with many other VXI controller platforms, including
embedded controllers and computers equipped with IEEE 1394-to-VXI,
GPIB-to-VXI, and MXI-2 interfaces. NI-VXI/NI-VISA I/O software compatibility
across platforms protects your software investment in the future. You can easily
port VXI software to other platforms as your controller requirements change or
expand in the future.
Performance
Designed for high-speed streaming, USB 2.0 transfers data at rates up to
480 Mbits/s across the USB link. Using this technology, the VXI-USB is optimized
for word-serial communication and achieves a faster block throughput rate
than either the IEEE 1394-to-VXI or GPIB-to-VXI remote interfaces. The VXI-USB
achieves a data transfer rate of up to 32 MB/s sustained throughput between
the local computer memory and the VXIbus. It provides you with a high-throughput
solution for remote control of VXI systems using large block transfers and
word-serial protocol.