Specifications

Installation and Operation Manual Chapter 1 Overview

DXC-100PSX Functional Description 1-13

Fan Assembly

The field-replaceable exhaust fan assembly removes the heated air from the

DXC-100PSX enclosure as well as the associated DXC-100 nest.

Figure

1-10

shows the front-mounted fan assembly (containing three fan units) with the

front cover removed.

Figure

1-10. Fan Assembly (without Front Cover)

1.3 Functional Description

Broadband Redundancy

Broadband Normal Operation

During normal (non-fault) conditions, broadband user traffic to and from the

network passes through the latching relays within the DXC-100PSX primary

interface module which is directly attached to the link. If it is not already

protecting another DXC-100 broadband module set within one of the two user

defined broadband protection groups (BB1 supporting up to 3+1 or BB2

supporting up to 6+1 module redundancy), the redundant broadband module set

will be performing self-test diagnostics via the looped back path within the

DXC-100PSX redundant interface module.

In the event that a fault or failure is detected within the standby module set, that

given broadband redundancy group will be disabled for the duration of the fault