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Фрагмент инструкции
2 Press down gently on the unit to secure it onto the clip, ensuring the fastening pieces fit into the slots on the unit below, as shown in Figure 3 (picture 2). Figure 3 Stacking Your Units Together To remove the clip: 1 Remove the top unit together with the clip. If you hook a finger around one of the the fastening pieces and then pull it gently from out of the slot, the clip should come away with the upper unit attached to it. 2 Push the clip in the center, so it bends towards the base of the unit, and then separate once the clip is loose. 1 Fastening Piece 2 Fastening Piece Positioning Your Switch When installing your Switch, ensure: ¦ It is out of direct sunlight and away from sources of heat. ¦ Cabling is away from power lines, fluorescent lighting fixtures, and sources of electrical noise such as radios, transmitters and broadband amplifiers. ¦ Water or moisture cannot enter the case of the unit. ¦ Air flow around the unit and through the vents in the side of the case is not restricted. We recommend you provide a minimum of 25mm (1in.) clearance. Securing Your Switch There are two slots on the underside of the OfficeConnect Switch that can be used for wall mounting. It is recommended that you mount the Switch with the LEDs facing upwards to prevent dust entering the cooling vents. When wall mounting the unit, ensure that it is within reach of the power outlet. You need two suitable screws. Ensure that the wall you are going to use is smooth, flat, dry and sturdy. Make two screw holes which are 150mm (5.9in.) apart for Switch 5 plus and Switch 8 plus, or 142mm (5.6in.) apart for Switch 16 plus. Use the guide on page 30 and 31 to mark the position of the holes. Fix the screws into the wall, leaving their heads 3mm (0.12in.) clear of the wall surface. Remove any connections to the unit and locate it over the screw heads. When in line, gently push the unit on to the wall and move it downwards to secure. When making connections, be careful not to push the unit up and off the wall. CAUTION: Only wall mount single units, do not wall mount stacked units. Also available from 3Com, is the OfficeConnect Mounting Unit (part number 3C16765). This allows you to firmly secure a stack of OfficeConnect devices to the desktop or onto a shelf in a rack. 12 Connecting Workstations and Other Equipment to Your Switch WARNING: Please read the ‘Important Safety Information’ section before you start. WARNHINWEIS: Bitte lesen Sie den Abschnitt ‘Wichtige Sicherheitsinformationen’ sorgfaltig durch, bevor Sie das Gerat einschalten. AVERTISSEMENT: Veuillez lire attentivement la section “Consignes importantes de securite” avant de mettre en route. CAUTION: Do not power the Switch off and on quickly. Wait about five seconds between power cycles. 10BASE-T cables are very easy to use. To connect a 10BASE-T cable, simply slot the connector into the relevant RJ-45 port. When the connector is fully in, its latch locks it into place. To disconnect the cable, push the connector’s latch in and remove it. When a TP cable is connected to the Switch at one end and a workstation other equipment at other and both unit are powered, the Switch will automtically detect whether a ’straight ’ or ’Crossover’ cable is being used and will compensate if required. The units will then ’Auto negotiate’ to determine the fastest possible link speed between them. This may take a few seconds and the outcome will be reflected in the LED’s on the front of the Switch. If the equipment connected to the Switch does not support auto-negotiation or if it has been disabled, it must be configured to operate in half duplex mode. The Switch detects all port connections, so you can start using your network immediately. If you need more ports, simply add another OfficeConnect unit. Connecting OfficeConnect Units to Your Switch You can increase the number of workstations that can connect to your network by adding OfficeConnect units (such as hubs and other switches). You can connect either a 10BASE-T or a 100BASE-TX OfficeConnect unit to each port of the Switch. 13 Checking Unit Connections When you have connected all your units, power on the units and the Switch. The Port Status LEDs for the ports you have used on both the units and the Switch should be on. If they are not, check your connections. Figure 4 Correct Connections for an OfficeConnect Hub OfficeConnect Switch OfficeConnect Hub Twisted pair cable with RJ-45 connectors. Maximum length is 100m (328ft) 14 There is no uplink/normal push switch that is usually associated with OfficeConnect products. Instead the product has an automatic MDI / MDIX (Media Dependant Interface) feature, which means either a 'straight through' or 'crossover' UTP cable can be used in any Switch port to make the connection to other switches, hubs and workstations. The switch will automatically detect which wiring practice has been followed and will compensate accordingly. Spot Checks At frequent intervals, visually check that: ¦ The Alert L...