Nortel Networks 1000M Manual de usuario descargar pdf (Pagina 54)

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Page 54 of 456 Preparing for installation

NN43021-310 Standard 02.01 December 2007

6 Sending and receiving cables must be of equal lengths and as short as

possible.

7 In order to optimize network FIJI cabling, mount the NTD35 network

modules in pairs in the same column, one module on top of the other in

the middle tiers. The modules must be stacked in one contiguous

equipment bay. The longest FIJI cable (NTRC48FA) is 8 m (26 ft),

which is the maximum distance of the furthest network module from the

Core/Net modules.

8 The IPE modules can be located separately from the CPU and network

bay, by up to the maximum network cable length of 13.5 m (45 ft).

9 Core/network modules can also be on top of each other in the first and

second tier in multi-group systems.

Cable routing guidelines

A system layout, preconfigured at the factory, is included in the software box

with each system shipment. Before you route cables, refer to the “to-from”

cable connections in the system layout. Note that there are a variety of cable

lengths. Make sure you install the designated cable for each connection.

Because the cable troughs (see Figure 12 on page 55) and spaces on the sides

of each module are within the EMI shielding of the system, unshielded cables

can be routed in those areas. The corner vertical channels in the rear of the

module are outside of the EMI shield. Cables routed in the vertical channels

must be shielded, and must enter and exit the EMI-shielded area through I/O

panels and adapters.

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