Fiber-optic modems convert RS-232 to 850 nm signals and operate async or sync, full or half duples at data rates up to 19.2 Kbytes/sec. The modems offer V.52 and V.54 diagnostics to ensure RS-232 communications integrity. Model 1140 needs no outside power from the RS-232 interface. Catalog 23 includes information on the line of fiber-optic modems, cabling, test equipment, and reference books.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.