User's Manual

CrossFire iDAS – All-Digital Transport System

User Guide

5.4. Network Cable

In the CrossFire system, NPRU is synchronized and POE powered by using network cable to be connect to EU-E at 10GE port.

The maximum length between EU-E and NPRU is 100 meters with CAT-6A STP. STP cables are only specified, while UTP cables

may cause reduced length and performance. The distance is end to end distance and assume the leads are connected to the

EU-E at one end and the NPRU at the other end. The use of patch leads, patch panels or connectors will impact on the

distance.

10GBase-T is sensitively interfered by external noise. Therefore, it must be extremely cautious to handle wiring deployment

and cable tension, bending radius, cable strapping and cable placing management should be under consideration before

installing NPRU.

 Cable Strapping

The tightness and density of strapping network cable have an obvious effect on cable performance. Thus the following items

should be taken in consideration for cable wiring:

 Use nylon cable ties to bundle up network cables and avoid that network cables shall not be wiring as right angle.

 Bundle up network cables in a proper tightness and place the cable bunch on protect sponge.

 PSANEXT occurs in a bundle of network cables. The more quantities of cables is, the more PSANEXT arise. The quantities

of cables shall not be over 12 in a bunch.

 Cables should be bent at any radius exceeding approximately four times the outside diameter of the cable without any

heavy load.

 Marking each cable is a great help for wiring deployment.