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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 wirespeed) 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.
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Specifications
Mechanical
Pin Function
1 BI_DA+
2 BI_DA–
3 BI_DB+
4 BI_DC+
5 BI_DC–
6 BI_DB–
7 BI_DD+
8 BI_DD–
Electrical
INPUT DC AC
Voltage: 10–36 V 24 V ±10%
Power: 3 W 7 VA
Frequency: N/A 47–63 Hz
Class 2 Circuits Only
Environmental
Operating Temperature: 0°C to +60°C
Storage Temperature: – 40°C to +85°C
Humidity, non-cond.: 10% to 95%
Protection: IP 30
Mounting TS-35 DIN-rail
Shipping Weight 1 lb (0.45 kg)
Regulatory Compliance
CE Mark; CFR 47 Part 15, Class A
UL508 Industrial Control Equipment
Functional
Compliance: ANSI/IEEE 802.3
Data Rates: 10, 100 and 1000 Mbps
Signalling: 10BASE-T, 100BASE-TX
and 1000BASE-T
Connectors: Shielded RJ-45
Segment length: 100 m (maximum)
LED Indicators
Power green
Activity/Link green or yellow
RJ-45 Connector Pin Assignments
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Power Options
Power Considerations
Voltage in the specified range must deliver current commensurate with power
consumption. The recommended size for solid power conductors is 16–22 AWG; for
stranded conductors, use 16–18 AWG. Ground is directly connected to zero volts and the
chassis is isolated from zero volts. Input connections are reverse-polarity protected.
Network Connections
The switch employs Auto-MDIX technology so that either straight-through or crossover
cables can be used to connect to network interface adapters or to another hub.
LED Indicators
The “PWR” LED glows solid green when the switch is properly powered. To aid in
troubleshooting, each port has two LEDs. The Port 1 LED labelled “H” glows if a link
exists at 1000 Mbps (green) or at 100 Mbps (yellow). The LED labelled “L” is normally
unlit but glows yellow if a 10 Mbps link exists. Either the “H” or “L” LEDs flash to show
activity. The LEDs of Ports 2–8 are unlabeled but work the same.
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Need more help installing this product?
For more information, visit www.ccontrols.com. If contacting our office, ask for
Technical Support.
Warranty
Contemporary Controls (CC) warrants this product to the original purchaser for five
years from the shipping date. If it fails to operate in compliance with its specification
during this period, CC will, at its option, repair or replace the product at no charge. The
customer is responsible for shipping the product; CC assumes no responsibility for the
product until received. This limited warranty covers products only as delivered. If user
modification damages the product, repair or replacement are not covered. Damage
from abuse, accident, disaster, misuse, or incorrect installation are not covered. This
warranty in no way warrants suitability of the product for any specific application. More
warranty information can be found at www.ccontrols.com.
Warning: This is a Class A product. In a domestic environment this product may cause radio
interference in which case the user may be required to take adequate measures.
Returning Products for Repair
Return the product to the location where it was purchased by following the instructions
at the URL below:
www.ccontrols.com/rma.htm
Declaration of Conformity
Information about the regulatory compliance of this product can be found at the URL below:
www.ccontrols.com/compliance.htm
February 2012 TD100100-0IA
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