Electro Standards Laboratories HP Fiber / RS-485 Converters Model 4127

The RS485 / HP Versalink Fiber Interface Converters are used to connect fiber optic linked terminals to a controller having an RS-485/RS-422 interface port. While RS485 is a versatile communication standard, able to communicate over long distances and at fast data rates, 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 variations) that often exist between them.