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Forum Discussion
30 m CAT6 cable length seems too long
I have tried using a UNIFI AP from an unmanaged 108 switch. It works off 1 m lengths of cable. But when attached to about 30m, the AP connects successfully for 30 seconds and then drops and reports...
Kitsap wrote:
The POE injector that came with my AC-Pro is labeled Unifi but does not list any IEEE compliance standards for POE. It does list a voltage and current output.
The UAP-AC-PRO Data Sheet does state- Power Method Passive Power over Ethernet (48V), 802.3af/802.3at Supported (Supported Voltage Range: 44 to 57VDC) aside of the UAP-AC-PRO being feedable by 802.3af/802.3at, a proprietary power delivery system with a proprietary ethernet injector over ethernet cables.
Worth mentioning, i'm not aware on such odd power distance limits when deploying UniFi devices, too within that proprietary world.
schumaku wrote:
Kitsap wrote:The POE injector that came with my AC-Pro is labeled Unifi but does not list any IEEE compliance standards for POE. It does list a voltage and current output.
The UAP-AC-PRO Data Sheet does state- Power Method Passive Power over Ethernet (48V), 802.3af/802.3at Supported (Supported Voltage Range: 44 to 57VDC) aside of the UAP-AC-PRO being feedable by 802.3af/802.3at, a proprietary power delivery system with a proprietary ethernet injector over ethernet cables.
Worth mentioning, i'm not aware on such odd power distance limits when deploying UniFi devices, too within that proprietary world.
Neither am I, nor does a few minutes of web search turn up anything. I am sure by now the OP has tried more than one injector and compared the supplied injector output specifications with the UAP-AC-PRO input requirements.
There will definitely be a voltage drop at the end of a 30 m Ethernet run. However the injector is connected adjacent to the UAP-AC-PRO device. I do note that Unifi makes several POE injectors with various voltage and power ratings. None of the specification sheets indicate a cable length limitation.
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