RAD Data comm HCD-E1 Especificações descarregar pdf (Página 193)

General Description

C-1

Appendix C

IR-ETH Interface Module

C.1 General Description

IR-ETH is an interface module for RAD modems, used for converting the

Ethernet (10BaseT or 10Base2) electrical levels to the modem TTL levels. It

also converts the Ethernet protocol to HDLC to enable long-distance

transmission and avoid the Ethernet collision limitation.

IR-ETH includes an internal, self-learning Ethernet bridge, which enables a

high performance link between two Ethernet segments at a low transmission

rate. The low-speed HDLC transmission is sent over the link using the

modem modulation technique, and then converted back to an Ethernet

signal at the remote modem.

Figure C-1 shows a typical application using an Ethernet interface bridge.

Each modem is connected to an Ethernet network via the Ethernet Interface

bridge.

HCD-E1 HCD-E1

Figure C-1 Typical Application of HCD-E1 with IR-ETH Module

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