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2.2 – Power & Network Connectivity
The A4FLEX can be powered using either PoE, PoE+, or a 24V
power supply attach to the power jack input.
When powering using PoE or PoE+:
o
Attach the Ethernet 1 port to a PoE-enabled port on a PoE
switch or midspan injector using a CAT-5e or better cabling.
When powering using an optional external supply:
o
Attach either Ethernet port to a port on the audio network
switch using a CAT-5e or better cable.
o
Attach the power supply to the power input jack and then
power up the external supply.
*Note:
Use of the audio amplifier outputs is prevented when
powering from PoE. It is therefore recommended to use either
PoE+ or a separate 24V supply in order to get full output power.
Internal audio limiting is applied when PoE+ power is detected as
the power source in order to prevent over-current conditions on
the PoE+ PSE.
2.2.1 - Daisy Chain Switched Configuration
By default, the Ethernet ports on an A4FLEX act as a two-port
switch. This be useful if, for example, there is a second unit in
the same physical location as the A4FLEX. Its network can be
connected to the A4FLEX instead of having to have a separate
home run back to the switch thus creating a daisy chain saving
time and cabling and network infrastructure costs.
Daisy Chain Power Constraints
PWR Link
– The Power Link connectors provide quick access
to a 24V DC power source to enable daisy chain powering
configurations. Power can be supplied to a daisy chain
device by wiring the power link connector on the A4FLEX to
the power link connector on the daisy chained device.
Use of the PWR Link daisy chain connectivity is not
recommended if the internal audio amplifiers are intended to
be used.
Note: The PWR Link connectors are powered from the DC
input jack. These connections are not fused and care should
be taken not to overload the external power supply when
daisy chaining units using the PWR Link connection.
5 - PWR Link Connectivity
