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High-Speed USB Digital I/O Modules
High-Speed USB Digital I/O Modules
Model USB-DIO-16H from Acces I/O Products Inc., features 16 high-speed buffered digital inputs or digital outputs at continuous, sustained streaming speeds up to 16 MB/s for fast, unlimited waveform length. The module is capable of 80 MB/s bursts with handshaking signals for synchronizing communications plus an additional 18 bits of general purpose digital I/O. The USB-DIO-16H is a port-powered high-speed USB 2.0 devices and offers hot swapping functionality for quick connect/disconnect whenever you need additional I/O on the USB port. The USB-DIO-16H includes a programmable clock capable of 1 kHz - 40 MHz transfers or one may choose to use own external clock. In addition to the 16 high-speed I/Os there are 18 standard TTL-compatible digital I/O channels configurable as 4 separate ports for input or output (see block diagram). All required power is normally supplied to the board via the USB cable, however for higher current sourcing capabilities, optional external power may be used. The I/O wiring connections for the units are via an industry standard high-density pin-in-socket SCSI connector. For external circuits, a jumper selection connects fused +5 V DC power to the connector. This resettable fuse is rated at 0.5 A. The series includes four models (USB-DIO-16H, USB-DIO-16A, USB-DI16A, and USB-DO16A). There is a choice from input only, output only, and input/output versions along with expandable FIFOs. These modules are especially useful where high-speed data needs to be captured or output for testing or stimulus/response applications. These include testing and debugging, laboratory automation, manufacturing test, image capture, process monitoring, datasource emulation, and many more, which require the need for high-speed parallel data transfer.
