Notes on the practical application of Poe switch

Mar 06, 2017

Outdoor PoE switch plays an important role in the application of security engineering. In practice, we often encounter some problems, before installation and use should be noted that some of the considerations in place to reduce the maintenance of follow-up projects.

1, power supply distance

Power over Ethernet power supply distance is determined by the data signal and the transmission distance, and the transmission distance of the data signal is determined by the network cable. The lower the impedance of the cable, the farther the transmission distance, so first of all to ensure the quality of the cable.

2, PoE standard

Protect the transmission distance of the PoE switch, look at the output voltage of the PoE power supply, in the standard (44-57V DC) as high as possible, PoE switch port output voltage must comply with the IEEE802.3af/at standard.

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