Electro Standards Laboratories HP Fiber / RS-232 Converters Model 4139

Model 4139 Interface Converter Application: The HP VersaLink Fiber to RS232 Converters are used to connect fiber optic linked terminals to a controller having an RS-232 interface port. While RS-232 is a versatile communication standard, conversion to a fiber optic communication standard also allows data transmission that is no longer susceptible to electrostatic or electromagnetic fields. Additionally, the ports of the connected terminals are protected from damage by potential differences (ground variatons) that often exist between them.