Titan UMAP 2110, Руководство по установке оборудования и инструкция пользователя

Страница: 17 / 62

1
—
Installation of the UMAP 2110
AC Power Connection (option)
If your UMAP 2110 uses AC power, connect the AC power cord to the AC supply socket on the rear
panel of the DSLAM (refer to Figure 1-5), and plug the cord into the external power source. The
voltage must be 100 to 240 VAC.
Ground Connections
This section provides the grounding rule for the UMAP 2110. All remote system sites must be
properly grounded for optimum system performance.
In Central Office :
There should be a CO GND that is adequately grounded. If the measured resistance from the
grounding screw (on the rear panel of the DSLAM, refer to Figure 1-5) to CO GND is less than 5
Ohm, then it can be assumed that the system is well grounded. If the measured resistance is larger
than 5 Ohm, it is recommended to connect the grounding screw to CO GND using #14 or #12 AWG
wire gauge conductor.
In Remote Cabinet :
The UMAP 2110 should be grounded by connecting a #14 or #12 AWG conductor between the
grounding screw (on the rear panel of the DSLAM, refer to Figure 1-5) and the earth ground or main
grounding bar. The resistance between the chassis and the grounding bar should be less than 25
Ohm.
Figure 1-5 UMAP 2110 grounding screw and AC supply socket (option) on the rear panel
9 / 54