Vivotek AW-GEV-264A Series, User Manual

Page: 127 / 334

User Manual rev. 1.2. Aug. 2015
127
3- 11 PoE
PoE is an acronym for Power Over Ethernet.
Power Over Ethernet is used to transmit electrical power, to remote devices over standard
Ethernet cable. It could for example be used for powering IP telephones, wireless LAN access
points and other equipment, where it would be difficult or expensive to connect the equipment
to main power supply.
The PoE detect function is follow the table
Stages of Powering up a PoE Link
Stage Action Volts specified
[V]
802.3af 802.3at
Detection PSE detects if the PD has the correct
signature resistance of 19
–26.5 kΩ
2.7-10.1
Classification PSE detects resistor indicating power
range
14.5-20.5
Mark 1 Signals PSE is 802.3at capable. PD
presents a 0.25
–4 mA load.
─
7-10
Class 2 PSE outputs classification voltage again
to indicate 802.3at capability
─
14.5-20.5
Mark 2 Signals PSE is 802.3at capable. PD
presents a 0.25
–4 mA load.
─
7-10
Startup Startup voltage >42 >42
Normal
operation Supply power to device 37-45 42.5-57
Power levels available
Class Usage Power range
[Watt]
Class description
0 Default 15.4 Classification
unimplemented
1 Optional 4 Very Low power
2 Optional 7 Low power
3 Optional 15.4 Mid power
4 Valid for 802.3at (Type 2)
devices, not allowed for
802.3af devices 30 High power
3- 11.1 Configuration
This page allows the user to inspect and configure the current PoE port settings and show all
PoE Supply W.
Web Interface
To configure Power Over Ethernet in the web interface:
1. Click configuration, PoE, and configuration
2. Specify the Reserved Power determined and Power Management ode. Specify the
PoE or PoE++ and Priority.
3. Click Apply.