Accton Technology Switch 24S User Manual

EtherHub-24s  
Quick Installation Guide  
EH2024  
E1298-R02  
150153-101  
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EtherHub-24s  
Quick Installation Guide  
Introduction  
Contents  
The EtherHub-24s includes 24 RJ-45 ports,  
1 BNC port for connection to thin Ethernet (10BASE2),  
and 1 AUI port for connection to a variety of media types  
including 10BASE5 or fiber (using a suitable transceiver).  
With these options, you can easily link the hub to a thin or  
thick Ethernet backbone, or connect to a remote office. The  
hub also has an indicator panel that includes utilization  
and link/traffic LEDs, making it easy to monitor the hub.  
Introduction  
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Package Contents  
Description of Hardware  
Mounting the Hub  
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This guide contains all the information required to install and operate the hub.  
Stacking Hubs on a Flat Surface  
Mounting Hubs in a Rack  
Package Contents  
Connecting the Hub System  
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The package includes:  
Making a Connection via an MDI-X Station Port  
Making a Connection via the MDI Daisy-Chain Port  
Making a Connection to the BNC Port  
Making a Connection to theAUI Port  
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EtherHub-24s (Model No. EH2024)  
Four rubber foot pads  
Rack mount bracket kit  
AC power cord  
· BNC connector  
· Quick Installation Guide  
· Owner registration card  
Powering on the Hub  
Verifying Hub Status  
Applications  
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Description of Hardware  
This hub consists of 24 RJ-45 10Mbps ports, 1 BNC port, and 1 AUI port. The  
following figure shows the front and back panel of the hub:  
Product Specifications  
Base Unit  
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Network Criteria  
Troubleshooting  
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Diagnosing Hub Indicators  
Power and Cooling Problems  
Installation  
Mounting the Hub  
Port and Cable Assignments  
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This hub can be placed directly on your desktop, or mounted in a rack.  
RJ-45 Port Description  
Before you start installing the hub, make sure you can provide the right  
operating environment, including power requirements, sufficient physical  
space, and proximity to other network devices that are to be connected. Verify  
the following installation requirements:  
EMI Certification  
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FCC Class A (USA)  
ClassA(Canada Department of Communications)  
ClassA(Taiwan Bureau of Commodity Inspection)  
VCCI ClassACompliance (Japan)  
· Power requirements: 100 to 240 VAC (± 10%) at 50 to 60 Hz (± 3Hz). The  
hub's power supply automatically adjusts to the input voltage level.  
· The hub should be located in a cool dry place, with at least 10 cm. (4 in.) of  
space at the front and back for ventilation.  
CE Mark Declaration of Conformance for EMI and Safety (EEC)  
Safety Compliance  
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· Place the hub out of direct sunlight, and away from heat sources or areas  
with a high amount of electromagnetic interference.  
· If you intend to mount the hub in a rack, make sure you have all the  
necessary mounting screws, brackets, bolts and nuts, and the right tools.  
· Check if network cables and connectors needed for installation are available.  
Underwriters Laboratories Inc. (USA)  
Wichtige Sicherheitshinweise (Germany)  
Warranty  
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EtherHub-24s  
Quick Installation Guide  
Stacking Hubs on a Flat Surface  
Making a Connection via the MDI Daisy-Chain Port  
This hub can be stacked anywhere  
there is a enough flat space, such as  
on a table or desktop.  
1. To make a direct connection to a compatible hub or switch, use the MDI  
daisy-chain port (Port 24). When connecting to this port, remember to set  
the port selection switch to MDI. You can also connect any RJ-45 (MDI-X)  
port on the hub to an MDI daisy-chain port on the other device.  
1. Stick the self-adhesive rubber foot  
pads (that come with this package)  
2. Prepare straight-through shielded or unshielded twisted-pair cables with  
RJ-45 plugs at both ends. Use 100W Category 3, 4 or 5 cable for all RJ-45  
connections. When inserting an RJ-45 plug, be sure the tab on the plug  
clicks into position to ensure that it is properly seated.  
on each of the 4 concave spaces located on the bottom of the first hub.  
2. Place the first hub on a firm flat surface where you want to install the stack.  
3. Repeat step 1 for each hub before stacking them. The rubber foot pads  
cushion the hub against shock/vibrations and provide space between each  
hub for ventilation.  
Notes: 1. To connect to another hub or switch, you may also attach to (MDI-X) station  
ports at both ends if you use crossover cabling (see page 6).  
2. When using Port 24 as an MDI port, set the port selection switch to 24MDI.  
3. When connecting to another 10Mbps hub, you can cascade up to 4 hubs,  
and use up to 100 meters (328 feet) for each inter-hub link.  
Mounting Hubs in a Rack  
Please comply with the following  
instructions to ensure that your hub  
is securely mounted in the rack.  
4. To achieve a larger network diameter, you should use a switch to connect  
several hubs (or stacks) together. Because a switch breaks up the path for  
connected devices into separate collision domains, it has no restrictions on  
cascade length.  
1. Use a standard EIA 19-inch rack.  
2. Use the brackets and screws supplied in the rack mounting kit.  
3. Use a cross-head screwdriver to attach the brackets to the side of the hub.  
4. Position the hub in the rack by lining up the holes in the brackets with the  
appropriate holes on the rack, and then use the supplied screws to mount  
the hub in the rack.  
Making a Connection to the BNC Port  
Plug the BNC T-type connector (provided with the hub) into a BNC port on the  
module. When connecting two devices via BNC ports, there should be at  
least 0.5 meters (1.64 feet) of coaxial cable between the two BNC ports. A thin  
Ethernet coaxial cable segment can be extended up to 185 meters (607 feet)  
and can link up to 30 nodes. If the unit is at the terminal end of a segment,  
connect a 50W terminator to the open end of the "T" connector.  
Connecting the Hub System  
This hub has 24 RJ-45 ports, one of which also serves as an (MDI) daisy-  
chain port. It also has one BNC port on the rear panel for connection to thin  
Ethernet (10BASE2), and one AUI port for connection to thick Ethernet  
(10BASE5) or fiber (10BASE-F).  
Making a Connection to theAUI Port  
Thick Ethernet - Attach an AUI to 10BASE5 transceiver to the thick Ethernet trunk,  
and then run an AUI drop cable (with 15-pin D-type connectors on both ends)  
between the AUI port on the hub and the transceiver. Note that the maximum  
length of an AUI drop cable is 50 meters (164 feet). A thick Ethernet segment  
can be extended up to 500 meters (1640 feet) and can link up to 100 nodes.  
Making a Connection via an MDI-X Station Port  
You can connect any RJ-45 (MDI-X) station port on the hub to any device that  
uses a standard network interface such as a PC or server, or to a network  
interconnection device such as a bridge or router (depending on the port type  
implemented).  
Fiber - Attach a 10BASE-F fiber optic transceiver to the AUI port. Use 50/125µm  
or 62.5/125µm multi-mode fiber cabling with SC or ST-type connectors  
(depending on the transceiver). Run cabling from the TX/RX ports on this hub  
to the RX/TX ports on the other device. When inserting the cable, be sure the  
tab on the plug clicks into position to ensure that it is properly seated. Note  
that 10Mbps fiber can be extended up to 2 kilometers (1.24 miles).  
1. Prepare the network devices you wish to network. Make sure you have  
installed 10BASE-T network interface cards for connecting to the hub's  
RJ-45 (MDI-X) station ports. You also need to prepare straight-through  
shielded or unshielded twisted-pair cables with RJ-45 plugs at both ends.  
Use 100W Category 3, 4 or 5 cable for all RJ-45 connections.  
Powering on the Hub  
1. Plug the power cord into the power socket at the rear of the hub, and the  
other end into a power outlet.  
2. Turn on the power switch on the back of the hub.  
3. Check the LED marked Power on the front panel to see if it is on. The unit  
will automatically select the setting that matches the connected input voltage.  
Therefore, no additional adjustments are necessary when connecting it to  
any input voltage within the range marked on the rear panel.  
2. Connect one end of the cable to the RJ-45 port of the network interface card,  
and the other end to any available (MDI-X) station port on the hub. When  
inserting an RJ-45 plug, be sure the tab on the plug clicks into position to  
ensure that it is properly seated. Using the hub in a stand-alone configuration,  
you can network up to 24 end nodes.  
I Do not plug a phone jack connector into any RJ-45 port. This may damage the hub.  
Instead, use only twisted-pair cables with RJ-45 connectors that conform with FCC  
standards.  
Note: The unit supports a "hot remove" feature which permits you to connect/disconnect  
RJ-45 or other media cables without powering off the hub and without disrupting  
the operation of the devices attached to the hub.  
Notes: 1. Make sure each twisted-pair cable does not exceed 100 meters (328 feet).  
2. When using Port 24 as an MDI-X port, set the port selection switch to 24MDI-X.  
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EtherHub-24s  
Quick Installation Guide  
Input Power  
Power Consumption  
Maximum Current  
Heat Dissipation  
Temperature  
Humidity  
100~240 VAC, 50/60 Hz (built-in full-range power module)  
15 Watts maximum  
0.11ARMS max. @ 110V, 0.05RMS max. @ 240V  
51 BTU/hr  
0°C to 50°C (32 to 122°F) Standard Operating  
5% to 95% (Noncondensing)  
CEMark  
FCC ClassA, VCCI ClassA, CISPR 22 ClassA  
IEC 801-2/3/4  
Verifying Hub Status  
Check each connection by comparing the indicators with the following table.  
LED  
Power  
Collision%  
Utilization% On  
State  
On  
On  
Indication  
Hub receiving power.  
Indicates percentage of collisions out of total packets.  
Indicates percentage of LAN bandwidth utilized.  
Port partitioned due to an abnormal network condition.  
Port has established a valid network connection.  
Certification  
Emissions  
Partition  
Link/Traffic  
On  
On  
Immunity  
Safety  
Flashing Port is receiving packets; blinking proportional totraffic.  
UL, CSA, TÜV/GS  
Applications  
Network Criteria  
Hub-to-Workstation Distance 100 meters maximum using twisted-pair cable  
Inter-hub Distance (MDI Port) 100 meters using twisted-pair cable (4 hub cascade)  
(100 meters = 328 feet)  
Flexible Configuration - This hub is not only designed to provide network  
access for 10Mbps connections, but also to provide a wide range of options in  
setting up network connections. It can be used as a simple stand-alone hub,  
or can be cascaded to any compatible hub or switch. A sample configuration  
diagram is shown in the following figure.  
Troubleshooting  
Diagnosing Hub Indicators  
The hub can be easily monitored through panel indicators to assist the  
network manager in identifying problems. This section describes common  
problems you may encounter and possible solutions.  
Symptom: Power indicator does not light up (green) after power on.  
Cause:  
Defective power outlet, power cord, or internal power supply.  
Solution: Check the power outlet by plugging in another device that is functioning  
properly. Check the power cord with another device. If these measures  
fail to resolve the problem, have the unit's power supply replaced by a  
qualified Accton distributor.  
Symptom: Link indicator does not light up (green) after making a connection.  
Cause:  
Network interface (e.g., a network adapter card on the attached device),  
network cable, or hub port is defective.  
Solution: Verify that the hub and attached device are powered on. Be sure the cable  
is plugged into both the hub and attached device. Check the adapter on the  
attached device and cable connections for possible defects. See if your  
cable is functioning properly by using it for another port and attached  
device that displays valid indications when connected to the network.  
Replace the defective adapter or cable if necessary. Also verify that you  
have not exceeded specified limits for any attached media as summarized in  
the following table:  
Product Specifications  
Base Unit  
Media Type  
Twisted Pair  
Thin Ethernet  
Thick Ethernet  
Fiber Optic (10 Mbps)  
Max Length  
100 meters (328 feet)  
185 meters (607 feet)  
500 meters (0.3 miles)  
2000 meters (1.24 miles)  
Max Nodes  
1000  
30  
500  
link pair  
Other  
0.5 meters1  
50 meters2  
Access Method  
CSMA/CD, 10 Mbps  
IEEE 802.3 10BASE-T, 10BASE2,AUI  
10 Mbps  
10BASE-T - 100W Category 3,4,5 UTP/STP,  
10BASE2 - thin Ethernet coaxial cable,  
10BASE5 - thick Ethernet coaxial cable1,  
10BASE-F - ST-type multimode fiber1  
(1: via suitable AUI transceiver)  
Standards Conformance  
Communication Rate  
Media Supported  
1 - Minimum distance between nodes.  
2 - Maximum length of drop cable from AUI port to transceiver.  
(0.5 meters = 1.64 feet; 50 meters = 164 feet)  
Number of Ports  
Indicator Panel  
Dimensions  
Weight  
24 RJ-45 ports, 1 BNC port, and 1AUI port  
Power, utilization, collisions, partition, link/traffic  
440 x 172 x 43 mm (17.32 x 4.58 x 6.77 in)  
4.42 kg (9.74 lb)  
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EtherHub-24s  
Quick Installation Guide  
Power and Cooling Problems  
limits for a ClassA digital device pursuant to Subpart B of Part 15 of FCC Rules, which  
are designed to provide reasonable protection against such interference when  
operated in a commercial environment. Operation of this equipment in a residential area  
is likely to cause interference, in which case the user, at his own expense, will be  
required to take whatever measures are required to correct the interference.  
If the power indicator does not turn on when the power cord is plugged in, you  
may have a problem with the power outlet, power cord, or internal power  
supply as explained in the previous section. However, if the unit powers off  
after running for a while, check for loose power connections, power losses or  
surges at the power outlet, and verify that the fan on back of the unit is  
unobstructed and running prior to shutdown. If you still cannot isolate the  
problem, then the internal power supply may be defective. In this case,  
contact your Accton distributor for assistance.  
You may use unshielded twisted-pair (UTP) for RJ-45 connections - Cat. 3 or greater.  
Class A (Canada Department of Communications)  
This digital apparatus does not exceed the Class A limits for radio noise emissions from  
digital apparatus as set out in the interference-causing equipment standard entitled  
"Digital Apparatus", ICES-003 of the Department of Communications.  
Installation  
Verify that all system components have been properly installed. If one or more  
components appear to be malfunctioning (e.g., the power cord or network  
cabling), test them in an alternate environment where you are sure that all the  
other components are functioning properly.  
Cet appareil numérique respecte les limites de bruits radioélectriques applicables aux  
appareils numériques de ClasseAprescrites dans la norme sur le matériel brouilleur:  
"Appareils Numérques", NMB-003 édictée par le ministère des Communications.  
Class A (Taiwan Bureau of Commodity Inspection)  
Port and Cable Assignments  
RJ-45 Port Description  
RJ-45 station ports (MDI-X) can be attached to any devices which use a  
standard network interface (e.g., a workstation, server, bridge or router).  
Similar networking devices (e.g., another hub or switch) can be cascaded by  
connecting any of the RJ-45 station ports on the hub to a daisy-chain port  
(MDI) on the other device. Use 100W Category 3, 4 or 5 twisted-pair cable:  
unshielded or shielded (UTP/STP) cable for all RJ-45 connections on the front  
panel, and shielded (STP) cable for the stack ports on the rear panel. Also be  
sure that the length of any twisted-pair connection does not exceed 100  
meters (328 feet).  
VCCI Class A Compliance (Japan)  
Assignment  
Assignment (Daisy-Chain  
Port, other device)  
Output Transmit Data +  
Output Transmit Data -  
CE Mark Declaration of Conformance for EMI and Safety (EEC)  
Pin  
(Station Ports 1 - 24)  
This is to certify that this product complies with ISO/IEC Guide 22 and EN45014.  
It conforms to the following specifications:  
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2
3
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Input Receive Data +  
Input Receive Data -  
Output Transmit Data + Input Receive Data +  
Output Transmit Data - Input Receive Data -  
EMC:  
EN55022(1988)/CISPR-22(1985)  
EN60555-2(1995)  
class A  
class A  
EN60555-3  
IEC1000-4-2(1995)  
IEC1000-4-3(1995)  
IEC1000-4-4(1995)  
4kV CD, 8kVAD  
3V/m  
1kV - (power line), 0.5kV - (signal line)  
4,5,7,8 Not Used  
Schematics for both straight and crossover twisted-pair cable are shown below.  
Straight-Through Crossover  
Not Used  
This product complies with the requirements of the Low Voltage Directive 73/23/EEC  
and the EMC Directive 89/336/EEC.  
(Hub)  
(Adapter)  
(Hub)  
(Hub)  
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2
3
6
IRD+  
IRD-  
OTD+  
OTD-  
1 OTD+  
2 OTD-  
1
2
3
6
IRD+  
IRD-  
OTD+  
OTD-  
1 IRD+  
2 IRD-  
3 OTD+  
6 OTD-  
Warning! Do not plug a phone jack connector in the RJ-45 port. This may damage this  
device. Les raccordeurs ne sont pas utilisé pour le système téléphonique!  
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IRD+  
IRD-  
EMI Certification  
FCC Class A (USA)  
Warning: This equipment generates, uses, and can radiate radio frequency energy and,  
if not installed and used in accordance with the instruction manual, may cause  
interference to radio communications. It has been tested and found to comply with the  
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EtherHub-24s  
Quick Installation Guide  
Safety Compliance  
Warranty  
Underwriters Laboratories Inc. (USA)  
Accton warrants to the original owner that the product delivered in this  
package will be free from defects in material and workmanship for three  
years. For the warranty to apply, you must register your purchase by returning  
the registration card indicating the date of purchase and including proof of  
purchase. There will be a minimal charge to replace consumable  
components, such as fuses, power transformers, and mechanical cooling  
devices. The warranty does not cover the product if it is damaged in the  
process of being installed.  
Important! Before making connections, make sure you have the correct Cord Set.  
Check it (read the label on the cable) against the following specification list.  
Voltage  
120 Volts  
Cord Set Specifications  
UL Listed/CSA Certified Cord Set  
Minimum 18 AWG; type SVT or SJT three conductor cord  
Maximum length of 15 feet  
Parallel blade, grounding type attachment plug rated 15A, 125V  
UL Listed/CSA Certified Cord Set  
240 Volts  
THEABOVE WARRANTY IS IN LIEU OFANYOTHER WARRANTY, WHETHER EXPRESS,  
IMPLIED OR STATUTORY, INCLUDING BUT NOTLIMITEDTOANY WARRANTYOF  
MERCHANTABILITY, FITNESS FORAPARTICULAR PURPOSE, ORANYWARRANTY  
ARISING OUT OFANYPROPOSAL, SPECIFICATION OR SAMPLE. ACCTON SHALLNOTBE  
LIABLE FOR INCIDENTALOR CONSEQUENTIALDAMAGES. ACCTON NEITHERASSUMES  
NORAUTHORIZESANY PERSONTOASSUME FOR ITANYOTHER LIABILITY.  
(North America) Minimum 18 AWG; type SVT or SJT three conductor cord  
Maximum length of 15 feet  
Tandem blade, grounding type attachment plug rated 15A, 125V  
240 Volts  
Cord Set with H05VV-F cord having three conductors with  
(Europe only)  
minimum diameter of 0.75 mm²  
IEC-320 receptacle; male plug rated 10A, 250V  
Wichtige Sicherheitshinweise (Germany)  
1. Bitte lesen Sie diese Hinweise sorgfältig durch.  
2. Heben Sie diese Anleitung für den späteren Gebrauch auf.  
3. Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen. Verwenden Sie keine  
Flüssigoder Aerosolreiniger. Am besten eignet sich ein angefeuchtetes Tuch zur Reinigung.  
4. Die Netzanschlu ßsteckdose soll nahe dem Gerät angebracht und leicht zugänglich sein.  
5. Das Gerät ist vor Feuchtigkeit zu schützen.  
6. Bei der Aufstellung des Gerätes ist auf sicheren Stand zu achten. Ein Kippen oder Fallen  
könnte Beschädigungen hervorrufen.  
7. Die Belüftungsöffnungen dienen der Luftzirkulation, die das Gerät vor Überhitzung schützt.  
Sorgen Sie dafür, daß diese Öffnungen nicht abgedeckt werden.  
8. Beachten Sie beim Anschluß an das Stromnetz die Anschlußwerte.  
9. Verlegen Sie die Netzanschlußleitung so, daß niemand darüber fallen kann. Es sollte auch  
nichts auf der Leitung abgestellt werden.  
10. Alle Hinweise und Warnungen, die sich am Gerät befinden, sind zu beachten.  
11. Wird das Gerät über einen längeren Zeitraum nicht benutzt, sollten Sie es vom Stromnetz  
trennen. Somit wird im Falle einer Überspannung eine Beschädigung vermieden.  
12. Durch die Lüftungsöffnungen dürfen niemals Gegenstände oder Flüssigkeiten in das Gerät  
gelangen. Dies könnte einen Brand bzw. elektrischen Schlag auslösen.  
13. Öffnen sie niemals das Gerät. Das Gerät darf aus Gründen der elektrischen Sicherheit nur  
von authorisiertem Servicepersonal geöffnet werden.  
14. Wenn folgende Situationen auftreten ist das Gerät vom Stromnetz zu trennen und von einer  
qualifizierten Servicestelle zu überprüfen:  
a. Netzkabel oder Netzstecker sind beschädigt.  
b. Flüssigkeit ist in das Gerät eingedrungen.  
c. Das Gerät war Feuchtigkeit ausgesetzt.  
d. Wenn das Gerät nicht der Bedienungsanleitung entsprechend funktioniert oder  
Sie mit Hilfe dieser Anleitung keine Verbesserung erzielen.  
e. Das Gerät ist gefallen und/oder das Gehäuse ist beschädigt.  
f. Wenn das Gerät deutliche Anzeichen eines Defektes aufweist.  
15. Zum Netzanschluß dieses Gerätes ist eine geprüfte Leitung zu verwenden. Für einen  
Nennstrom bis 6A und einem Gerätegewicht größer 3kg ist eine Leitung nicht leichter als  
H05VV-F, 3G, 0.75mm2 einzusetzen.  
Der arbeitsplatzbezogene Schalldruckpegel nach DIN 45 635 Teil 1000 beträgt 70dB(A)  
oder weniger.  
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