The National Instruments GPIB-485CT-A is a versatile GPIB Serial Controller designed to transform a standard PC into a fully operational IEEE 488.2 controller. This device features an RS-485 serial interface, equipped with a 9-pin shielded male D-sub connector that accommodates standard 9-pin female connectors, alongside a 24-pin female GPIB connector with secure screw lock hardware. The GPIB-485CT-A is available in both AC and DC configurations; the AC model includes a front panel power cord receptacle, while the DC model features a DC power jack.

For flexible operation, the GPIB-485CT-A can be configured to function in either G or S mode, with DIP switches located on the rear panel allowing users to set data format, baud rate, and GPIB address. In G mode, the controller operates as a listener and talker, while S mode enables full controller functionalities. This device is designed to accept data continuously from either the GPIB or serial port, regardless of whether the other port is engaged. It also offers comprehensive error and status reporting, capable of both numeric and symbolic outputs, and supports XON/XOFF and hardware handshake communication protocols.

Key specifications include RS485 data transfer rates of up to 38.4 kb/s, a 256 KB RAM buffer, and dimensions of 3.0 x 1.7 x 4.7 inches for the AC version and 3.0 x 1.1 x 4.7 inches for the DC version. Weighing 12 ounces, the GPIB-485CT-A is backed by a two to three-year warranty, and user and maintenance manuals are available for download. For pricing information, please contact a National Instruments sales representative.