USB-DIO16A Acces 16-Channel High-Speed Digital Output

The Acces USB Series 16-Channel High-Speed Digital I/O Modules are capable of up to 8MHz (16MegaByte) continuous scanning and up to 40MHz (80MegaByte) bursts. Four model versions are manufactured; an input/output unit (USB-DIO-16A), an input only unit (USBDI16A), an output only unit (USB-DO16A) all with 4k word FIFOs, and an input/output unit with expanded 64k word FIFO (USB-DIO-16H).

The 16 high-speed lines are TTL-compatible digital inputs/outputs with high-current capabilities. The programmable clock facilitates capability of 1k-40MHz transfers or the user may choose to use their own external clock. All clock signals are provided on the connector and are synchronous. In addition to the (16) high-speed inputs/outputs there are (18) standard digital I/O channels configurable as 4 separate ports for input or output. Power is supplied to the board via the USB cable; for higher current capabilities, external 9V AC/DC power adapter may be used. The I/O wiring connections for this unit are via an industry standard 68-pin SCSI connector. For external circuits, fused +5VDC (see note) power is available at the connector based on a hardware jumper selection made by the user. This resettable fuse is rated at 0.5A.

A type B USB connector is used on all models which features a high retention design that complies with the class 1, Div II minimum withdrawal requirement of over 3 pounds of force. This connector has an orange color-coded insulator to differentiate it from standard USB connectors.

The complete unit is designed for use in rugged industrial environments but is compact enough to fit nicely onto any desk or testing station. The board is PC/104 sized (3.550 by 3.775 inches) with mounting capability and ships standard inside a steel powder-coated enclosure with an anti-skid bottom.