Page 54 of 456 Preparing for installation

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

7In 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.

8The 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).

9Core/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.

NN43021-310 Standard 02.01 December 2007

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Nortel Networks 1000M warranty Cable routing guidelines