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High speed USB serial converters

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ENGINEERS can seamlessly connect to existing serial instruments using widespread USB technology with two new high-speed USB serial converters from National Instruments .

The serial converters expand NI's extensive instrument control enabling users to connect to existing serial instrumentation systems through new computer bus technology.

The NI USB-232 and NI USB-485 serial converters transform a USB port into asynchronous serial ports for communication with serial devices. The NI USB-232 uses the RS232 Serial protocol and the NI USB-485 converter uses the RS485 or RS422 serial protocols.

Both converters are available in two or four-port configurations. The serial converters feature high-speed data throughput - up to 230.4kb/s (NI USB-232) and up to 460.8kb/s (NI USB-485).

With the NI USB-485, users can communicate with up to 31 devices. The new converters also comply with the new high-speed USB specification 2.0.

The converters are suitable for scientific laboratory research applications needing USB technology to quickly configure and run applications.

Engineers using the NI USB-232 serial converter can select their transceiver mode - data terminal equipment (DTE) or data communications equipment (DCE) - in software, or have the converter automatically detect the transceiver mode.

These selectable transceiver modes give more flexibility for communicating with serial devices.

The NI USB-232 and NI USB-485 serial converters include NI-Serial driver software for Windows 2000/XP. The serial converters can be installed as standard serial ports from existing applications or with applications written with NI-VISA bus interface software.

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