Technical Writer:
Project Leader:
R&D Engineering Manager:
R&D Vice Director:
Customer Check:
Unpacking the EP-505ST
The following items should be included in the ship-
ping carton and found in good condition.
One EP-505ST 10BASE-T Hub
One AC Power Adapter
This Manual
3.
Link/Receive (GREEN) Indicators
These LEDs indicate the state of the data link. The
LED remains on when the connection is okay.
These LEDs blink to indicate data is being received
on the segment.
4.
Partition (RED) Indicators
These LEDs light to indicate a port on the hub is
malfunctioning. Faulty ports are automatically iso-
lated by the hub. When the port recovers, however,
the partition LED returns to normal status.
Rear View
The rear of the hub contains the AC adapter port, the
cascade enable slide-switch, and five UTP/STP ports.
Hub Features
Your EP-505ST Ethernet Hub includes the following
features:
IEEE 802.3 compliant (10Mbps, CSMA/CD)
Five RJ-45 (UTP/STP) ports supporting up to five
10BASE-T segment connections
Port auto-partitioning and reconnection to facilitate
faulty segment isolation
Polarity auto-detection and auto-correction for
UTP/STP ports
Data collision and jabber handling functions
Two LEDs per port indicate Link, Receive and
Partition status
Two LEDs to indicate Power and Collision status
Palmtop-size measuring 6.6 x 12.5 x 2.5cm, 110g
Wall-mountable for easy installation
Identifying Parts of the Hub
Figure 1: The Front Panel LED Indicators
1.
Power (RED) Indicator
This LED indicator is on when the hub is powered
up.
2.
Collision (YELLOW) Indicator
This LED indicator blinks when the hub detects a
collision on the network.
Installation
Making Network Connections
The following sub-sections describe network connec-
tions for the EP-505ST.
10BASE-T is a specification for Ethernet networks based
on twisted pair cabling. The maximum length of a seg-
ment for 10BASE-T networks is 100 meters.
The cable is commonly referred to as a UTP/STP cable
and the accompanying connectors as RJ-45 connectors.
To establish 10BASE-T connections, you will need the
following equipment:
Twisted pair (UTP/STP) straight cables for hub-
to-NIC (network interface card) connections.
Twisted pair (UTP/STP) straight cables for hub-
to-hub connections, usually referred to as hub
cascading.
The EP-505ST hub has five RJ-45 connectors for at-
taching up to five 10BASE-T based workstations. To
establish such connections:
1. Ensure that both the hub and the soon-to-be-
connected workstation are in the power off mode.
2. Plug one end of the UTP/STP cable into an avail-
able 10BASE-T hub port.
3. Plug the other end into the workstation's network
interface card. Figure 3 illustrates a simple network
topology using 10BASE-T hub-to-workstation
connections.
Figure 3: 10BASE-T Connections
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Figure 2: Rear View
1.
RJ-45 UTP/STP Ports
The Hub is equipped with 5 RJ-45 UTP/STP ports
for making 10BASE-T hub-to-workstation
connections.
2.
Cascade Enable Slide-Switch
Slide this switch to the right to enable cascading
with straight UTP/STP cables.
3.
AC Adapter Port
Insert the AC adapter jack into this port.
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