User's Manual

Table Of Contents
Installation, Operation and Service Manual 90DIB500R41IM_FCC02 99.1 105
DIB-500 R4.1 Setup and commissioning
Connecting equipment racks (as of 5 carriers)
5.5.1.5 Installing the right top hat rail end bracket
To prevent components on the top-hat rail from shifting, top-hat rail end brackets must
be installed.
To secure the components reliably, a top hat rail end bracket must be installed to the
right of the top hat rail power supply unit, refer to Figure 5.13.
Figure 5.13 top hat rail end bracket (right-hand side)
The following conditions must be met to install the right-hand top hat rail end bracket:
| The LRU must be installed.
| The top hat rail power supply unit must have been installed.
The procedure for installing top hat rail end brackets is described in section 5.5.1.1 on
page 97.
5.5.2 Connecting the equipment racks A and B
To be able to operate variants with more than four carriers (hybrid and cavity), the two
equipment racks (A and B) must be connected with each other on site.
Table 5.11 describes the connections that must be made when connecting the equip-
ment racks.
Table 5.11 Connecting equipment racks – required connections
Connection Description
TIB transceiver modules (cabinet A and
B) – via the E1 connection board
The TIB transceiver modules are connected with each other in a chain
via the E1 connection board. The connection is made via the corre-
sponding connectors on the E1 connection board so that the first TIB
transceiver module is connected with the second one, the second one
with the third one, etc.