DIB-500 R4.1
Installation
Connecting equipment racks (as of 5 carriers)
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Installation and Operation Manual 90DIB500IM02 – 5.2
4.4.2.7
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 4.15.
Figure 4.15 Top hat rail end bracket (right-hand side)
The following conditions must be met to install the right-hand top hat rail end bracket:
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The LRU must be installed.
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The top hat rail power supply unit must have been installed.
The procedure for installing top hat rail end brackets is described in section 4.4.2.3 on
page 66.
4.4.3
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.
To connect the equipment racks, you have to make the following connections:
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Connect the TIB modules (racks A and B) – via E1,
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Connect the TIB modules (racks A and B) – via Ethernet,
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Connect the TIB modules (racks A and B) – via Ethernet (with redundancy,
optional),
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Establish the GPS synchronization via PPS
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Connect the Rx antennas (in the case of diversity)
The procedure for connecting the two equipment racks is identical for the two variants
(hybrid and cavity) and is described in the following.
