RadioFrame Networks Inc DH2 ユーザーズマニュアル
RadioFrame System
Pre-Installation
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
Length
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).
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
Attenuation is the measure of signal loss in the cable segment.
Near-End Crosstalk (NEXT) loss
NEXT loss is a measure of signal coupling from one wire pair to another within a
single UTP cable segment.
single UTP cable segment.
3.9.4.5 Labeling
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:
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:
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).
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.
plasticized paper) using indelible black ink.