ALFA ADH24SB User's Manual
Contents
1. Quick Installation Guide for 16 24 32 ports Dual Speed Hub ADH16SB ADH24SB ADH32SB oQ ALFA ee TI Smart Connections http www alfa com tw FCC COMPLIANCE STATEMENT This equipment generates and uses radio frequency energy andif not installed and used properly that is in strict accordance with the instructions provided with the equipment may cause interference to radio and TV reception The equipment has been tested and found to comply with the limits for a Class B computing device in accordance with the specifications in Subpart B of Part 15 of FCC rules which are designed to provide reasonable protection against such interference in a commercial environment However there is no guarantee that interference will notoccur in aparticular installation If you suspectthis equipment is causing interference turn your hub on and off while your radio or TV is showing interference to determine the source ofthe interference Youcan try to correct the interference by one or more of the following measures 1 Reorient the receiving radio or TV antenna where this may be done safely 2 Tothe extent possible relocate the radio TV or the other receiver away from the equipment 3 Plug the computer which has the equipment installed into a different power outlet so that equipment and the receiver are on different branch circuits If necessary you should consult the place of purchase or an experienced radio televisiontechnician for2. additional suggestion CAUTION The phonejack cannot beconnected to telephone system Contents Chapter 1 Introduction cc eee eee 1 Chapter 2 Features amp Specifications 3 Chapter 3 Package Contents cceeeeeeeee eee 5 Chapter 4 Physical Description 6 Chapter 5 Installation oseese 9 Chapter 6 Troubleshooting eeeceecceeceeeee 12 1 Introduction Congratulations on your purchase of this rackmount stackable dual speed hub Migrating from traditional 10Mbps Ethernet to 100Mbps Fast Ethernet is now simple and affordable with these dual speed hubs These high performance 16 port 24 Port 32 port 10 100Mbps stackable dual speed hubs are equipped with 16 24 32 RJ45 dual speed ports one uplink port and one internal 2 port switch Typically adual speed hub hastwo independent internalnetwork segments 10Mbps segment and 100Mbps segment Depending on the speed of attached network devices each individual port of a dual speed hub provides Auto Negotiation capability which automatically senses and selects optimum speedat 10Mbps or 100Mbps A 10Mbps network device attached to the dual speed hub will be able to communicate with other network devices attached to the hub running at 10Mbps On the other hand a 100Mbps network device attached to the dual speed hub will be able to communicate with other devices attached to the hub running at 100Mbps Therefore dual speed hub can be 10Base T hub when all the conn
3. bps 9 Uplink Port Dual Speed Hub Normal Port Figure 52 Uplink toanother hub 4 Stacking Hubs Together These Dual Speed Hubs provide two stacking ports Users may connect two hubs using the supplied stacking cable Connect one endof the stacking cable to the IN stacking connector of the huband the otherend of the stacking cable toanother hub OUT stacking connector Youmay stack upto 10 hubs Thehubs cascaded togetherthrough stacking ports are in one collision domain and therefore considered as one logical dualspeed hub Figure 53 Stack 6hubs together When you havetwo or morehubs stacked together only onehub s internal switch is active the others areinactive Such design will eliminate a Loop in the networkthat might causethe whole network to malfunction 10 5 Connecting the power Connect the powercord to thepower socket onthe rear panelof the unit Connect the powercord to the power outlet andturn on powerswitch The green Power LED on the frontpanel should be lit OKs Figure 54 Connect the power cable 11 g Troubleshooting 1 Power LEDis not lit e Check if the power cord is properly connected tothe power outletand the hub Make surethe power switchon the hubis turned ON 2 Link Status LED is notlit e Check the powerswitch of thenetwork devices attachedto th
4. e hub make sure they areturned ON e Check the network cable make sureit is properly connected to the hub and the network device eCheck the networkcable make surethe cable complies with EIA TIA 568 specification Use straight through Category 5 cables for 100Mbps connection and Category3 or highercables for 10Mbps connection eCheck the slide switch and makesure it sin normal position when you use the last porton the hubto connect to workstations or fileservers 3 The last port s Link Status LED is not lit whenit is uplinked to another hub e Make sure thecable is connected to the uplink connector e Check the networkcable make sureit is properly connected to bothhubs One end ofthe cable shouldbe connected touplink port whilethe other end of the cableshould connected toa regular port Do not connectthe cable to both uplink ports e Check the networkcable make surethe cable complies with EIA TIA 568 specification Use Category 5 cables for 100Mbps connection e Check the networkcable make surethe maximum length does not exceed5 meters 15ft in 100Mbps connection and 100 meters 300ft in 10Mbps connection 4 Collision LED flashes constantly e Remove all thenetwork cables connectthe cables backone by oneto isolate the source of the collision e Check the network cable inferior cable quality will resultin excessive collision and errorpackets Contact your dealer if problem persist 12
5. ecting nodes are running at 10Mbps as illustrated in Figure 1 1 or can be 100Base TX hub whenall the connecting nodes are running at 100Mbps as illustrated in Figure 1 2 These stackable dual speed hubs are the ideal hubs for both 10Base T and 100Base TX networks Figure 1 10Mbps segmentconnecting Figure 2 100Mbps segmentconnecting 10Mbps devices 100Mbps devices Dual Speed hub with internal switching function automatically switches data traffic between devices running at different speed which allows communications between ports running at 10Mbps and ports running at 100Mbps Dual Speed hub with internal switching function can save money by eliminate the need to purchase expensive Switches for users with mixed speed network environment The connection of the Dual Speed hub withinternal switching functionis illustrated asin Figure 1 3 Internal Switch Figure 3 Internal switchlinks 10Mbps and 100Mbps segments When you ready to expand yournetwork the Uplink port provides an easy way to connect to another hub with regular straight through Category 5 cable These Dual Speed Hubs provide the stackable feature They can stack together up to6 hubs toform a logically Big dual speed Hub These Dual Speed hubs can be set up as stand alone units or it can be mounted on astandard 19 rack rack mounting kits are included with the unit A Features am
6. nect the other end of the network cable to the RJ45 port of the network device The network cables must comply with EIA TIA 568 specifications and Category 5 standard for 100Mbps data rate or minimum Category 3 for 10Mbps data rate Maximum length between the hub and any network devices is 100 meters 300ft Once the network cable is connected on both ends and the attached network devices are powered on the green Link Status LED should be lit If the connected network devices are running at 100Mbps the green Speed LED 100M shouldalso be Lit Dual Speed Hub Network Adapter Category 5 EIA TIA 568 UTP Cable teen Figure 51 Connect the huband network device 3 Uplink to Another Hub Use the uplink port the last port to connectto another hubas illustrated in Figure 5 2 Connecting cable must comply with EIA TIA 568 specifications and Category 5 100Mbps standards to connect the hubs The Uplink port of the Dual Speed hub supports Auto Sensing function which will automatically sense the speed of the connected hub and operates at either 100Mbps or 10Mbps speed If the connected hub is another Dual Speed hub or 100Base TX hub the transmission speed between the twohubs will beset at 100Mbpsand the green Speed 100M LED should be lit The maximum length of the cable should notexceed 5 meters 15ft when connecting two hubs running at 100Mbps and 100 meters 300ft when connecting two hubsrunning at 10M
7. p Specifications 1 Features E Consists of oneinternal 10Mbps Ethernetsegment and one internal 100Mbps Fast Ethernetsegment E Supports Auto Sensing RJ45 ports which automatically sense and select optimum speedand route datatraffic to correspondinginternal segments Built in Uplink selection for the last port to connect with regular straight through cable toanother hub m Network Utilization LEDs provides simple reading on hub s traffic status m Built in internal switching function automatically switches data traffic between devicesrunning at differentspeed establishes communications between portsrunning at 10Mbpsand 100Mbps m Support stackable function for stacking upto 6 hubs to form a logically single dual speed hub E Standard 19 Rack Mountable E Two year warranty 2 Specifications E Standards IEEE 802 3 amp 802 3u m 10 100Mbps Ports RJ45 x 16 16 Port Rackmount Dual Speed Hub or RJ45 x 24 24 Port Rackmount Dual Speed Hub or RJ45 x 32 32 Port Rackmount DualSpeed Hub E Hub LEDs Power Internal Switch E Segment LEDs Collision Utilization E Port LEDs Speed Status 10 or 100 Link Activity Status E Internal Switch 1K MAC Address Table 256KB Buffer Memory E Dimensions 17 3x 7 9 x1 75 in 440 x201 x 45mm E Weight 5 1 lb 2 3kg m Power 100 240V AC 50 60Hz internal full range switching power m Operating Temperature 32 131 F 0 55 C E Operating Humidity 10 95 Noncondensing MEmi
8. ssion FCCClass B amp CE Package Contents E One Stackable DualSpeed Hub E One power cord E Users manual E Stacking Cable Rackmountccessories 16 Port Rackmount E Dual Speed hub 9 e TW 24 Port Rackmount D gt Dual Speed hub 2 UM 32 Port Rackmount Dual Speed hub ie ew Figure 31 Package contents 4 Physical Description 1 Panel LED Panel RJ45 connectors Uplink Por 9 10 1 12 13 14 15 16 16 Port Rackmount N VA Dual Speed Hub een 006 Stackable Ethernet Hu LED Internal Switch LED Link Activity Power LED LED LED Panel RJ45 connectors Uplink Por 24 Port Rackmount N VA Stacking Dual Speed Hub gece 100M LED Stackable Ethernet Hu Internal Switch LED Link Activity Power LED LED Figure 41 Panel description LED Panel RJ45 connectors Uplink Por 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 28 30 31 32 Port Rackmount NZ us tacking ports Dual Speed Hub 10M Col and Util LED 100M Col and Util LED vk 6 6 6 Oo io 9 686 32 Port10 100Mbpsj 2992299923222222 10 6000660600600660605 Switch 9 9 9 9999929999909 ah Power S0 0 0000000000 LED 5 amp rackable Ethernet Hu Fig
9. ure 41 Panel description cont Link Activity Internal Switch LED LED Power LED 2 LED Description Number of LED Lit Power is supplied One for the whole Hub Off No power Lit The internal switch isactive Switch internal Switc One for the whole Hub Off The internal switch isinactive COL Segment Yellow Collision Lit Collision detected inthis segme One for 10Mbps segment and onefor Off No Collision 100Mbps segment UTIL One set for10Mbps Segment Green Lit Indicate network utilization f segment and oneset fo Utilization 100Mbps segment Lit A valid linkis established LNK ACT Link Activity Flash Green Data packets received One for each port Off No link is established Lit This port runat 100Mbps One for each port Off Not connected orrun at 10M Table41 LED description 5 Installation 1 Operating Environment These Dual Speed Hubs must be installed and operated within the limits of specified operating temperature and humidity see previous section under Specifications Do not place objects on top of the unit Do not obstruct any vents at the sides of the unit Do not position the hub near any heating source such as heater radiator or direct exposure to sun Prevent entering of water and moisture into the unit If necessary use dehumidifier to reduce humidity 2 Connecting tonetwork devices Connect one end of the network cable to any of the RJ45 ports on the front panel and con
Download Pdf Manuals
Related Search