Model 4897 GPIB Hi-Speed Bus Extender extends the GPIB bus more than 4 km. Dual fiber optic and metallic cable interfaces transfer data at rates greater than 660 Kbytes/sec. Use the 4897 with a metallic cable up to 500 feet and a fiber optic cable up to 4 km. IEEE-488.2 compatible. Download the 4897 Data Sheet as a PDF file.