products

•Media Attachment Unit (MAU) - This module (see Figure 27-3) provides apoint of attachment for fiber optic cables used to transfer messages over long distances between the PCRR and up to four remote nodes (see Figure 27-4). The module directs messages between the PCRR and one of the four remote nodes at a time as selected, converting signals readable by the PCRR to signals compatible with the fiber optic media and vise versa. The following components comprise the MAU:

— Electronics Module (1C31179) - Houses the Attachment Unit Logic Board (LAU) which provides power for the module and displays LED indication that the fiber optic cables are connected and the Remote Node Controller Module has power.

— Personality Module (1C31181) - Houses the Attachment Unit Personality Board (PAU) which translates signals between the PCRR and the fiber optic media and provides connectors for the fiber optic cables.

Table 27-1 lists and describes the available MAU modules.