Alcatel-Lucent MDR-8000 - Shelf;Rack Alarm Connection; Mdr-8000 Synchronous Repeater Connections

3-5
3.4 SHELF/RACK ALARM CONNECTION
The PDU, PN 3EM13317AA, has a blown fuse alarm visual indicator and a Form C relay
alarm output (J4, J5, and J6) for connection to customer alarm equipment.
An optional Fuse and Shelf alarm plug-in assembly is available to provide shelf alarm
connections requiring Form C relays. The alarm inputs (major and minor) must be hard
wired to J3 on the PDU. The alarms are provided on alarm connector J305 pin 24 (major/
visual alarm) and pin 50 (minor/audible alarm) of each shelf. A wire-wrap adapter (PN
695-4171-002) for connector J305 is available. Insulated 22-gauge solid copper wire is
recommended for connecting to the wire-wrap adapter and also to J3 on the PDU. Alarm
outputs are transmitted to customer equipment via Form C relay outputs (J4, J5, J6,
relays 1 through 8). This option also includes the blown fuse alarm indicator and Form C
relay alarm output (J4, J5, and J6 – relay 9). See
Figure 3 - 3 for shelf to PDU alarm wir-
ing for PDU PN 3EM13317AA. For shelf to PDU alarm wiring for PDU PN 695-6200,
Refer to CD.
3.5 MDR-8000 SYNCHRONOUS REPEATER CONNECTIONS
The following paragraphs describe the cabling and limitations involved with carrying
MDR-8000 service channel information across two (2) back-to-back radio terminals at a
repeater site. In this document, the term synchronous indicates that the clocks of the two
radios are locked together.
Synchronous, in this document, has absolutely nothing to do
with whether or not the radios are transporting synchronous (SONET or SDH) data.
Where allowed, only two radios can be tied together synchronously. In scenarios where
there are three (3) radios (or some other odd number of radios), the third radio must be
clocked independently or asynchronously from the first two.
Multiple service channel functions [i.e., orderwire, fault alarm, RS-232
and extended link monitor channel (ELMC) data] can be carried across
a common synchronous repeater cable. When asynchronous connections
are required between radios, each service channel function (i.e., order
-
wire, fault alarm, ELMC, etc.) must be carried across its own indepen-
dent cable.
Note