Fast
On the other hand, if two hubs are connected via 100m of fiber optic cabling, then the total length of remaining cabling that can be used to connect two end- nodes to hub 1 and 2 respectively is 367m - (2 x 80m) - (0.9 x 100) = 117m.
A more detailed example of calculating the maximum cable length for fiber optics is included in the section on 3UHFLVH*XLGHOLQHVIRU&RQILJXULQJ0XOWLSOH+XEV in
Chapter 3.
Providing Power to the EtherHub
1.Power on the hub by plugging the power cord into the power socket at the rear of the EtherHub (see Fig.
2.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.
Verifying Port Status
Check each connection by viewing the port status indicators listed below. (For a more detailed description of these indicators, refer to Chapter 4.)
∙/LQN Indicates that the port has established valid network connection.
∙7UDIILF Indicates traffic traversing the port.
∙3DUWLWLRQ Indicates that the port has been isolated from the hub due to excessive errors.
If the Link status indicator is not functioning properly, or you experience any other difficulties in setting up the hub, refer to Appendix A.
Installing the System |
