15 independent 16-bit counter/timers

Paul Boughton

Acces I/O Products is announcing its newest embedded digital counter/timer board, the model USB-CTR-15.

The board is packaged in a small, rugged, industrial enclosure and features 15 independent 16-bit counter/timers. This USB device is an excellent way to add portable, easy-to-install, counter/timer capabilities to any PC or embedded system with a USB port.

The unit is a true USB 2.0 device, offering the highest speed available with the USB bus. It is fully compatible with both USB 1.1 and USB 2.0 ports. The unit is plug-and-play, allowing quick connection/disconnection whenever the user needs additional counter/timer devices on a USB port.

The USB-CTR-15 can be used for a wide variety of measurement applications including event counting, frequency measurements, position measurement, pulse counting, pulse-width modulation and pulse generation.

An OEM version is available with just the board an no enclosure or external screw terminal board; this version is suitable for a variety of embedded OEM applications.

Acces I/O's USB-CTR-15 features five fully-undedicated industry-standard 82C54 counter/timer chips. Each 82C54 provides three independent software-programmable 16-bit counters. The maximum allowable input frequency is 10 MHz.

I/O wiring connections are provided via an industry-standard 50-pin IDC connector or via a removable screw terminal adapter board. A User Configuration Adapter board is also provided to assist in wiring the counters together. This allows for flexible yet simple counter concatenation/configuration.

The USB-CTR-15 is designed to be used in rugged industrial environments but is small enough to fit onto any desktop or testing station.

The board measures just 90 x 96mm (3.550 x 3.775 inches) and ships inside a powder-coated steel enclosure with an anti-skid bottom. What makes the OEM option innovative is that its PCB size and pre-drilled mounting holes match the PC/104 form factor (without the bus connections).

This ensures easy installation using standard standoffs inside most enclosures or systems. The USB-CTR-15 can therefore be integrated into any PCI-104 or PC/104 stack by connecting it to a simple USB port usually included on-board with embedded CPU form factors such as EBX, EPIC, and PC/104 - which is especially important since many newer CPU chipsets do not support ISA and have plenty of USB ports.

The USB-CTR-15 is supported for use in most operating systems and includes a free Linux (including Mac OS X) and Windows 98/NT/2000/XP/2003 compatible software package. This contains sample programs and source code in Visual Basic, Delphi, C++ Builder, and Visual C++ for Windows.

Also incorporated is a graphical setup program in Windows. Third-party support includes a Windows standard DLL interface usable from the most popular application programs, and includes example Labview VIs. Embedded OS support includes Windows XPe.

For more information, visit www.accesio.com


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