The ADU100 features three isolated 16-bit analog inputs, four digital I/O lines, one 5-A relay contact output, four 16-bit event counters, and an auxiliary RS-232 port. Two of the analog input lines can be programmed in 20 mV to ±2.5 V ranges via an internal PGA. The third analog input is a high-level input with programmable ranges of 0 to 5, ±5, 0 to 10, and ±10 VDC. Two reference outputs are available (2.5 and 5 V) to allow for the direct connection of strain gauge type sensors.

This low-cost data acquisition interface is easy to use with Visual Basic and Visual C++ via standard HID drivers included with Windows 98, 2000, and XP. A mini-driver (DLL) allows for control using standard ASCII commands using read and write commands. The ADU100 USB data acquisition interface also features an auxiliary RS-232 port for connecting legacy RS-232 devices. The ADU100 includes a 10¢ USB cable. It’s available as a PCB or in an enclosure with several mounting options. The variety of I/O make it well suited for integration into a variety of instruments.

The ADU100 costs $199. Three additional USB boards are currently available. Four more will be available by the end of 2005.

Ontrak Control Systems, Inc.
www.ontrak.net