RS 288-5774 Manual

10770
Introduction
General description ______________________________________________________________1
Features ________________________________________________________________________2
Package contents ________________________________________________________________2
Hardware installation
Installation procedure_____________________________________________________________2
Standalone configuration __________________________________________________________2
Multi-level configurations, cascading ________________________________________________3
Trouble shooting __________________________________________________3
Specifications _____________________________________________________3
Introduction
General Description
The RS Fast Ethernet Hubs are designed to bring 100Mbps Ethernet to the workplace, in offices and
labs, in compact and affordable packages. providing four Fast Ethernet ports, the FE4 Hub enables
power users to access Fast Ethernet. The eight-port FE8 Hub provides the capacity for small
workgroups to connect to Fast Ethernet.
Both Hubs have a push-button up-link switch (operates on port 4 for the FE4 and port 8 for the FE8).
This link-up switch enables cascading when the button is pressed into the crossover position.
Alternatively, when the button is “un-pressed,” the port operates as a normal node-connection port.
With the up-linkport connected to a hub, users or workgroups gain greater control over their
applications via “un-pressing” the up-link button, detaching the hub and its connected devices from
the rest of the network. This feature is generally useful in testing applications or instances when
maximum bandwidth is required.
The RS FE4 and FE8 Hubs comply with the IEEE 802.3u standards. Both Hubs can be easily installed.
No DIP switch needs to be set and no software needs to be loaded. Simply connect the power
adaptor to a power source and connect the desired network devices into the RJ-45 ports.
The % utilisation LEDs provides for convenient monitoring of network traffic loading. As traffic levels
increase, more LEDs come on to indicate more network loading in a bar-graph fashion. LINK and RX
LEDs on each port indicate that port is operational or receiving data, respectively. PART (partition)
indicates that port has been partitioned to remove a detected fault. COL (collision) and PWR
(power) LEDs indicate hub status.
The information provided in RS technical literature is believed to be accurate and reliable; however, RS
Components assumes no responsibility for inaccuracies or omissions, or for the use of this information, and all use
of such information shall be entirely at the user’s own risk.
No responsibility is assumed by RS Components for any infringements of patents or other rights of third parties
which may result from its use.
Specifications shown in RS Components technical literature are subject to change without notice.
RS Components, PO Box 99, Corby, Northants, NN17 9RS Telephone: [phone]
An Electrocomponents Company © RS Components 1998
4 Port FE4 hub RS stock no. 288-5774
8 Port FE8 hub RS stock no. 288-5780
Issued March 1998 10770
RS Fast Ethernet Hubs
Instruction Leaflet
Operating Environment:
Operating temperature: 0°C to 40°C (32°F to 104°F)
Operating humidity: 5% to 85% relative humidity, non-condensing
Network Cable Connectors:
Ports are shielded RJ-45 female. For 100Mb, use Category 5 UTP/STP
Switches, Manual:
Push-button up-link switch converts right-most port on hub from a regular (= position) user segment
port to a crossover (X position) up-link port for on-off connection to a central hub or another
cascaded hub.
Power Supply (External):
Power input voltage: 200-250 Vac at 50Hz
Power Consumption:
FE4: 5 watts max.
FE8: 8 watts max.
Packaging:
Enclosure: High-strength metal case. Comes with rubber feet for table-top mounting, and metal clips
for wall-mounting.
Dimensions:
FE4: 6.2in x 4.1in x 1.1in (15.8cm x 10.3cm x 2.7cm)
FE8: 9.3in x 10.3in x 2.7in (23.5cm x10.3cm x 2.7cm)
Weight:
FE4: 500g (18oz)
FE8:735g (26oz)
Power Supply: 455g (16oz)
Cooling Method: Convection
LED indicators:
Common: PWR for power, COL for collision, % UTILISATION to indicate traffic level as bar graph
Per Port: Link/RX on when twisted pair link is operational, flashes when there is receive activity
PART: On to indicate the port has been partitioned to remove a detected fault.
Federal Communications Commission
Radio Frequency Interference Statement
This equipment generates, uses and can radiate frequency energy and if not installed and used
properly, that is in strict accordance with the manufacturer’s instructions, may cause interference to
radio communication. It has been tested and found to comply with the limits for a class A computing
device in accordance with the specifications in Subpart J of Part 15 of FCC rules, which are designed
to provide reasonable protection against such interference when operated in a commercial envi-
ronment. Operation of this equipment in a area is likely to cause interference, in which case the user
at his own expense will be required to take whatever measures may be required to correct the inter-
ference.
Important: RS Fast Ethernet Hubs contain no user serviceable parts. Attempted service by
unauthorised personnel shall render any and all warranties null and void. If problems are
experienced with the RS fast ethernet hubs, consult the troubleshooting section of this
manual.

10770
3
10770
2
Features
●Four or eight 100 BASE - TX ports for Fast Ethernet connectivity
●Compact size for use in the workplace, individual offices or small workgroups
●Complies with IEEE802.3U 100Mb specifications
●Supports Category 5 Unshielded (UTP/STP) twisted-pair cabling
●Push-button up-link switch for cascading, or for detaching the hub from the network in order to
get full 100 Mbps bandwidth locally
●Rubber feet provide stability and scratch-proof placement on finished surfaces
●Four LEDs for “% Utilisation” display
●Global collision status LEd, indicates collisions for all ports on the hub
●Class 11 compliance for 100BASE - TX cascading
●Auto-partioning of ports receiving excessive collisions, removes network faults
●External DC power supply
Package Contents:
●Fast ethernet 100BASE - TX four or eight port hub
●Power adaptor
●User manual.
Hardware Installation
Installation procedure
1. Place FE4 or FE8 on a smooth surface.
2. Connect power adaptor DC jack into the hub, plug the adaptor into a power source.
3. Connect a device to an RJ-45 hub port using category 5 UTP/STP cabling. For unshielded twist
pair, note that the distance between the hub and the device cannot exceed 100 m, and that the
longest UTP cable path through the collision domain (max. of two class 11 cascaded hubs) should
not exceed 205 meters.
4. Connect each applicable device in your network using the same process in Step 3.
Note: To reliably operate your network at 100bps, you must use Category 5 wiring. Category 3 or
4 wire may sometimes seem to work, but it will normally cause data loss and unreliable
operation.
Stand-alone Configuration
In a simple stand-alone configuration, the up-link button is in the “=” or un-pressed position, and
port 4 (on the FE4) or port 8 (on the FE8) are used to connect to users and other nodes.
1234
30+30101
% Utilization
ColPwr
100 M/s
UPLINK
PART
LINK
RX
Figure 1
RS FE4 Hub (front panel with LEDs)
Multi-level Configurations, Cascading
If you want to connect more than 4 ports (or 8 ports for FE8 Hub) into a collision domain, use the up-
link port to connect to another hub. This is called “cascading”. Simply connect the up-link port (port
4 on the FE4 and port 8 on the FE8) to any port on another hub, with the up-link button pressed.
Note:That cascading configurations should be compliant with Fast Ethernet collision domain
specifications. The RS Fast Ethernet Hubs are Class II repeaters.
Troubleshooting
This section contains information to help solve problems. If the Hub is not functioning properly, check
that the hub was set up according to the instructions in this manual.
If the FE4 or FE8 Fast Ethernet 100BASE - TX hub does not connect to the network,
●Check the Link/Activity LED lights on the Hub. The Link LED should be ON, which indicates that
the physical wiring connection is made on both ends of the wire and that power is ON for the
devices at both ends.
If the Link/Activity LED light is not ON, check all connections at the adaptor or node, and at the
hub.
●Try another port on the hub.
●Turn off the power of the hub, after a while re-power the unit.
●Make sure that the cable is installed properly. The network cable must be securely attached. If the
problem persists, try a different cable.
Other Important Tips
●Make sure the network adaptor cards installed in the workstations and cable connections are in
good working condition. Also, make sure adaptor drivers are loaded.
●If you are using the up-link port, confirm that the up-link port is in the correct position: This button
is pressed in for the up-link setting; “un-pressed” for regular (node) setting.
The up-link switch enables cascading when the button is pressed in to the crossover position.
Alternatively, when the button is ‘un-pressed’, the port operates as a normal node-connection
port.
Specifications
Performance:
Data Rate:100Mbits/second
Partioning: Enforced after 63 consecutive collisions
Auto-reconnect: Occurs after one packet of error-free reception
Network Standards:
Ethernet IEEE 802.3u, 100BASE-TX. Supports 802.3u auto-negotiation for connected devices.
The RS Fast Ethernet hubs are physical layer ethernet products and operate independently of all
software.
30+30101
% Utilization
ColPwr
GARRETT
1 2 3 4 1 2 3 4
UPLINK
30+30101
% Utilization
ColPwr
GARRETT
1234 1 2 3 4
UPLINK
RS FE8 Hub
Up-link switch set
to the ‘X’ position
‘pushed in’
RS FE8 Hub
Two RS FE8 Hubs cascaded
Figure 2

10770
3
10770
2
Features
●Four or eight 100 BASE - TX ports for Fast Ethernet connectivity
●Compact size for use in the workplace, individual offices or small workgroups
●Complies with IEEE802.3U 100Mb specifications
●Supports Category 5 Unshielded (UTP/STP) twisted-pair cabling
●Push-button up-link switch for cascading, or for detaching the hub from the network in order to
get full 100 Mbps bandwidth locally
●Rubber feet provide stability and scratch-proof placement on finished surfaces
●Four LEDs for “% Utilisation” display
●Global collision status LEd, indicates collisions for all ports on the hub
●Class 11 compliance for 100BASE - TX cascading
●Auto-partioning of ports receiving excessive collisions, removes network faults
●External DC power supply
Package Contents:
●Fast ethernet 100BASE - TX four or eight port hub
●Power adaptor
●User manual.
Hardware Installation
Installation procedure
1. Place FE4 or FE8 on a smooth surface.
2. Connect power adaptor DC jack into the hub, plug the adaptor into a power source.
3. Connect a device to an RJ-45 hub port using category 5 UTP/STP cabling. For unshielded twist
pair, note that the distance between the hub and the device cannot exceed 100 m, and that the
longest UTP cable path through the collision domain (max. of two class 11 cascaded hubs) should
not exceed 205 meters.
4. Connect each applicable device in your network using the same process in Step 3.
Note: To reliably operate your network at 100bps, you must use Category 5 wiring. Category 3 or
4 wire may sometimes seem to work, but it will normally cause data loss and unreliable
operation.
Stand-alone Configuration
In a simple stand-alone configuration, the up-link button is in the “=” or un-pressed position, and
port 4 (on the FE4) or port 8 (on the FE8) are used to connect to users and other nodes.
1234
30+30101
% Utilization
ColPwr
100 M/s
UPLINK
PART
LINK
RX
Figure 1
RS FE4 Hub (front panel with LEDs)
Multi-level Configurations, Cascading
If you want to connect more than 4 ports (or 8 ports for FE8 Hub) into a collision domain, use the up-
link port to connect to another hub. This is called “cascading”. Simply connect the up-link port (port
4 on the FE4 and port 8 on the FE8) to any port on another hub, with the up-link button pressed.
Note:That cascading configurations should be compliant with Fast Ethernet collision domain
specifications. The RS Fast Ethernet Hubs are Class II repeaters.
Troubleshooting
This section contains information to help solve problems. If the Hub is not functioning properly, check
that the hub was set up according to the instructions in this manual.
If the FE4 or FE8 Fast Ethernet 100BASE - TX hub does not connect to the network,
●Check the Link/Activity LED lights on the Hub. The Link LED should be ON, which indicates that
the physical wiring connection is made on both ends of the wire and that power is ON for the
devices at both ends.
If the Link/Activity LED light is not ON, check all connections at the adaptor or node, and at the
hub.
●Try another port on the hub.
●Turn off the power of the hub, after a while re-power the unit.
●Make sure that the cable is installed properly. The network cable must be securely attached. If the
problem persists, try a different cable.
Other Important Tips
●Make sure the network adaptor cards installed in the workstations and cable connections are in
good working condition. Also, make sure adaptor drivers are loaded.
●If you are using the up-link port, confirm that the up-link port is in the correct position: This button
is pressed in for the up-link setting; “un-pressed” for regular (node) setting.
The up-link switch enables cascading when the button is pressed in to the crossover position.
Alternatively, when the button is ‘un-pressed’, the port operates as a normal node-connection
port.
Specifications
Performance:
Data Rate:100Mbits/second
Partioning: Enforced after 63 consecutive collisions
Auto-reconnect: Occurs after one packet of error-free reception
Network Standards:
Ethernet IEEE 802.3u, 100BASE-TX. Supports 802.3u auto-negotiation for connected devices.
The RS Fast Ethernet hubs are physical layer ethernet products and operate independently of all
software.
30+30101
% Utilization
ColPwr
GARRETT
1 2 3 4 1 2 3 4
UPLINK
30+30101
% Utilization
ColPwr
GARRETT
1234 1 2 3 4
UPLINK
RS FE8 Hub
Up-link switch set
to the ‘X’ position
‘pushed in’
RS FE8 Hub
Two RS FE8 Hubs cascaded
Figure 2

10770
Introduction
General description ______________________________________________________________1
Features ________________________________________________________________________2
Package contents ________________________________________________________________2
Hardware installation
Installation procedure_____________________________________________________________2
Standalone configuration __________________________________________________________2
Multi-level configurations, cascading ________________________________________________3
Trouble shooting __________________________________________________3
Specifications _____________________________________________________3
Introduction
General Description
The RS Fast Ethernet Hubs are designed to bring 100Mbps Ethernet to the workplace, in offices and
labs, in compact and affordable packages. providing four Fast Ethernet ports, the FE4 Hub enables
power users to access Fast Ethernet. The eight-port FE8 Hub provides the capacity for small
workgroups to connect to Fast Ethernet.
Both Hubs have a push-button up-link switch (operates on port 4 for the FE4 and port 8 for the FE8).
This link-up switch enables cascading when the button is pressed into the crossover position.
Alternatively, when the button is “un-pressed,” the port operates as a normal node-connection port.
With the up-linkport connected to a hub, users or workgroups gain greater control over their
applications via “un-pressing” the up-link button, detaching the hub and its connected devices from
the rest of the network. This feature is generally useful in testing applications or instances when
maximum bandwidth is required.
The RS FE4 and FE8 Hubs comply with the IEEE 802.3u standards. Both Hubs can be easily installed.
No DIP switch needs to be set and no software needs to be loaded. Simply connect the power
adaptor to a power source and connect the desired network devices into the RJ-45 ports.
The % utilisation LEDs provides for convenient monitoring of network traffic loading. As traffic levels
increase, more LEDs come on to indicate more network loading in a bar-graph fashion. LINK and RX
LEDs on each port indicate that port is operational or receiving data, respectively. PART (partition)
indicates that port has been partitioned to remove a detected fault. COL (collision) and PWR
(power) LEDs indicate hub status.
The information provided in RS technical literature is believed to be accurate and reliable; however, RS
Components assumes no responsibility for inaccuracies or omissions, or for the use of this information, and all use
of such information shall be entirely at the user’s own risk.
No responsibility is assumed by RS Components for any infringements of patents or other rights of third parties
which may result from its use.
Specifications shown in RS Components technical literature are subject to change without notice.
RS Components, PO Box 99, Corby, Northants, NN17 9RS Telephone: [phone]
An Electrocomponents Company © RS Components 1998
4 Port FE4 hub RS stock no. 288-5774
8 Port FE8 hub RS stock no. 288-5780
Issued March 1998 10770
RS Fast Ethernet Hubs
Instruction Leaflet
Operating Environment:
Operating temperature: 0°C to 40°C (32°F to 104°F)
Operating humidity: 5% to 85% relative humidity, non-condensing
Network Cable Connectors:
Ports are shielded RJ-45 female. For 100Mb, use Category 5 UTP/STP
Switches, Manual:
Push-button up-link switch converts right-most port on hub from a regular (= position) user segment
port to a crossover (X position) up-link port for on-off connection to a central hub or another
cascaded hub.
Power Supply (External):
Power input voltage: 200-250 Vac at 50Hz
Power Consumption:
FE4: 5 watts max.
FE8: 8 watts max.
Packaging:
Enclosure: High-strength metal case. Comes with rubber feet for table-top mounting, and metal clips
for wall-mounting.
Dimensions:
FE4: 6.2in x 4.1in x 1.1in (15.8cm x 10.3cm x 2.7cm)
FE8: 9.3in x 10.3in x 2.7in (23.5cm x10.3cm x 2.7cm)
Weight:
FE4: 500g (18oz)
FE8:735g (26oz)
Power Supply: 455g (16oz)
Cooling Method: Convection
LED indicators:
Common: PWR for power, COL for collision, % UTILISATION to indicate traffic level as bar graph
Per Port: Link/RX on when twisted pair link is operational, flashes when there is receive activity
PART: On to indicate the port has been partitioned to remove a detected fault.
Federal Communications Commission
Radio Frequency Interference Statement
This equipment generates, uses and can radiate frequency energy and if not installed and used
properly, that is in strict accordance with the manufacturer’s instructions, may cause interference to
radio communication. It has been tested and found to comply with the limits for a class A computing
device in accordance with the specifications in Subpart J of Part 15 of FCC rules, which are designed
to provide reasonable protection against such interference when operated in a commercial envi-
ronment. Operation of this equipment in a area is likely to cause interference, in which case the user
at his own expense will be required to take whatever measures may be required to correct the inter-
ference.
Important: RS Fast Ethernet Hubs contain no user serviceable parts. Attempted service by
unauthorised personnel shall render any and all warranties null and void. If problems are
experienced with the RS fast ethernet hubs, consult the troubleshooting section of this
manual.