What device picks off the direct current (DC) voltage injected into the CAT-5e cable by the injector and makes it available to equipment through the regular DC power jack?

What device picks off the direct current (DC) voltage injected into the CAT-5e cable by the injector and makes it available to equipment through the regular DC power jack?

• A. A DC picker or tap.
• B. A PoE splitter.
• C. A power conditioner.
• D. A data repeater.

Answer: (A)

Poe power is carried on the Ethernet cable, and at the receiving end you sometimes need a device that literally taps into that DC and delivers it to the equipment’s own DC input. This is a DC tap (often just called a tap). It sits in the line and “picks off” the injected DC voltage from the CAT-5e and routes it to the device through its regular DC power jack. The idea is to extract the power while keeping the data path separate for the device that doesn’t use PoE. A PoE splitter can also provide DC to a non-PoE device, but the description focuses on the act of pulling the DC off the cable itself and feeding it to a standard power jack, which is the role of a tap. A power conditioner stabilizes or cleans power and a data repeater deals with signal timing/strength, not power extraction from the Ethernet cable.

Poe power is carried on the Ethernet cable, and at the receiving end you sometimes need a device that literally taps into that DC and delivers it to the equipment’s own DC input. This is a DC tap (often just called a tap). It sits in the line and “picks off” the injected DC voltage from the CAT-5e and routes it to the device through its regular DC power jack. The idea is to extract the power while keeping the data path separate for the device that doesn’t use PoE.

A PoE splitter can also provide DC to a non-PoE device, but the description focuses on the act of pulling the DC off the cable itself and feeding it to a standard power jack, which is the role of a tap. A power conditioner stabilizes or cleans power and a data repeater deals with signal timing/strength, not power extraction from the Ethernet cable.