CTRLink eisk8-gt Руководство по установке

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EISK8-GT

Plug and Play Gigabit Switching Hub for Automation Systems

Installation Guide

The EISK8-GT gigabit switching hub is designed for the automation environment. Like

all Ethernet switches from Contemporary Controls, it features non-blocking (full wire-

speed) operation. It divides an Ethernet network into eight collision domains —

"bridging" data links to create larger network diameters than possible with repeating

hubs. Each port automatically negotiates its data rate to 10, 100 or 1000 Mbps —

controlling data flow with the PAUSE function in full-duplex links or with the

backpressure method in half-duplex links.

The switch provides preamble regeneration with symmetry and amplitude

compensation — retiming signals to eliminate jitter. Digital pre-emphasis compensates

for inherent signal strength roll-off. Link integrity is monitored, verifying that a working

adapter or hub is on the distant end of a segment.

Port assignments are learned by reading Ethernet frames and logging the source

addresses to a table. Throughput is improved by restricting traffic to those ports party

to a data exchange — while other data is simultaneously exchanged on other ports.

Store-and-forward operation is implemented and broadcast, multicast, or unicast

transmissions are received by all ports.

The EISK8-GT has eight Auto-MDIX ports for attaching local devices. In addition to a

power LED, each port has one LED showing link/activity/rate. The unit operates from a

wide range of low-voltage AC or DC power.

The EISK8-GT is provided with a writeable label for easy identification of the remote

device attached to each cable.