3Com Switch 7700 Installation Manual

Also see for Switch 7700: Installation guide Datasheet Configuration guide Configuration guide Configuration guide

Contents

S W I T C H 7 7 0 0 C O M P O N E N T STable 18 Description of the 24FX (3C16861) port cableCard type Centralwavelength Connector type Interface cable Transmissiondistance24FX 850nm MT-RJ 62.5/125μm multi-mode optical fiber 2km3.1.7. Power SystemTwo power modules are sufficient to power a fully loaded Switch 7700 system. However, the switch provides 3 slotsof power modules to implement N+1 redundancy backup.The power distribution box of Switch 7700 is installed on the chassis floor close to the back of the chassis. It controlscurrent connection, disconnection and distribution.AC Power Module (3C16854)The AC power source requires an AC power module and an AC distribution box.The AC power module is connected to the external power source through an AC socket and is connected to thebackplane. Specifications for the AC power module are listed in Table 19.Table 19 AC power module specificationsItem AC power moduleAC input 100V to 240V, 47 to 63HzMaximum output power 460W3.1.8. Fan Assembly (3C16856)The fan assembly, shown in Figure 12, is installed on the right side of the Switch 7700. There are 4 120mm fans tocool the system. The fans are directly connected to the backplane through connectors. Operation fault signals arecollected and transmitted to the system alarm board through the backplane.Figure 12 Fan Assembly (3C16856)3.1.9. Switch SpecificationsThis section provides detailed information about features of the Switch 7700. Table 20 below describes systemspecifications for the Switch 7700.19