SW1: Port 1 PD - “Auto/Force”
When the Port 1 Auto/Force DIP-switch is in the default Auto position, the PoE/
PD port is in the auto mode, it will negotiate using 2 pair power if the input power
is 802.3af, or 4 pair power if the input power is 802.3at or High-Power 60 watts. 2
and 4 pair operation depends on the input power and the model of the extender.
The GXHPoE/Si negotiates PoE power on 4 pairs and the GXPoE+/Si negotiates
PoE power on 2 pairs.
When this DIP-switch is in the Force position, the PoE/PD port is in the forced mode
and configured for 4 pair operation allowing up to 60 watt input power. Forced
operation depends on the input power and the model of the extender.
SW2 and SW3: Port 2 and Port 3 - “Auto/Force”
When these DIP-switches are in the default Auto position, the port will automatically
preform the IEEE standard PoE detection, classification and powering functions to
the attached PD.
When these DIP-switches are in the Force position, a maximum of 60 watts of power
will be available to the PD.
SW4: Reserved
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2) Example Topologies
The PoE Extenders can be deployed in a daisy chain topology, dropping one or two
PDs from a single extender or dropping a PD at the end of the daisy chain. Other
combinations can be supported depending on the amount of PoE power available.
3) Determine the Amount of PoE Power Required
There are several factors to consider when extending Powered Devices over
standard copper cabling.
•
The power source: 802.3at (30 watts) or HPoE (60 watts)
•
The power required by the PD: Class of PD: 802.3af, 802.3at or 60W
•
The power loss in the cabling: Category 5, Category 5e or Category 6
•
The power consumed by the PoE Extender:
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