3.2 Making Powered Device Connections
The mid-span injector supports connection to IEEE 802.3af compliant PoE PD (Powered Device). The
Ethernet port of the PD can be Ethernet, Fast Ethernet or Gigabit Ethernet. The injector’s PoE OUT
port delivers power together with network signal to a connected powered device via Cat.5 cable or
better.
To make a connection, the following check points should be noted:
1. For safety reason, the connected PD must be a IEEE 802.3af-compliant device. Un-compliant
devices are not supported.
2. The Cat.5 cables used for the connections must be 4-pair cables. The power is sent over the pairs
(4,5) (7,8) of the cable.
3. Hot-plug connection is allowed anytime.
PoE OUT Port Power
Voltage
48VDC on jack pin 4/5 (V
48dc
+) and jack pin 7/8 (V
48dc
-)
Power (per port)
15.4W maximum per port
Power (per unit)
1 Power Model - 60W for all 8 PoE OUT ports
2 Power Model - 120W for all 8 PoE OUT ports
Connection Distance
Safety Protection
The injector provides safety protection design for operation. The individual power output of each PoE
OUT port is shut down when any of the following events occurs:
Incompliant PD
An incompliant PD is detected on the port.
Disconnection
A PD disconnection.
Overload
An overload situation is detected on the port.
Over-current
An over-current situation is detected on the port.
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