RadioFrame Networks Inc DH2 User Manual

RadioFrame System 

RFN_3.1 Beta

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Shorts between any two or more conductors in the cable 

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Crossed pairs in the cable 

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Reversed pairs in the cable 

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Split pairs in the cable 

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Any other wiring errors in the cable 

The length test is used to determine the maximum physical length of the cable 
segments. The Microscanner™ Pro and many other models can be used to 
check cable, which are accurate within a few feet. The RFN guideline for cable 
length is 100 meters (approximately 328’ for less). 

Attenuation is the measure of signal loss in the cable segment. 

NEXT loss is a measure of signal coupling from one wire pair to another within a 
single UTP cable segment. 

Cabling shall be identified with a standardized, double-ended system to facilitate 
cable and equipment connection identification. (Refer to ANSI/TIA/EIA-606 for 
more information.) The label should show the following: 

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Equipment identification for each end of cable. 

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Connector reference designator for each end of cable. 

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Direction along the cable where terminating equipment is located. 

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Floor and room of the equipment. 

In general, the following considerations need to be observed in implementing a 
labeling system: 

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Labeling shall indicate the destination ends of the cable, in terms of 
equipment name and connector reference designator or name. This applies 
to connectorized, lugged, or punched-down cable terminations, regardless of 
the application (RF, audio, or control). 

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Labeling shall be imprinted on white opaque material (preferably plastic or 
plasticized paper) using indelible black ink.