Manual

Model 48D User Guide Issue 2, July 2018
Studio Technologies, Inc. Page 11
No problems will occur if an Ethernet
signal that supports Power-over-Ethernet
(PoE) is connected to the RJ45 receptacle
associated with the Model 48D’s Network
B. It will not enumerate (announce) itself to
the PoE-enabled switch as a PoE device
nor will it supply power to the Model 48D.
Only if a PoE-supporting Ethernet signal
is connected to Network A will operating
power be supplied.
The Model 48D’s Ethernet connections
are made by way of two Neutrik etherCON
protected RJ45 receptacles that are lo-
cated on the back panel of the Model 48D.
This allows connections by way of cable-
mounted etherCON plugs or standard
RJ45 plugs. The Model 48D’s Ethernet
interfaces support auto MDI/MDI-X and,
as such, using crossover or “reversing”
cables is not required.
12 Volt DC Input
As previously discussed in this guide, an
Ethernet connection to Network A that
supports Power-over-Ethernet (PoE) can
serve as the Model 48D’s power source.
Alternately, a source of 12 volt DC power
can be connected to the Model 48D. For
redundancy, both the PoE and 12 volt DC
sources can be connected at the same
time. If this is the case then power will be
drawn only from the PoE source. If the
PoE source that’s connected to Network A
becomes inoperable the 12 volt DC source
will provide the Model 48D’s power with no
interruption in operation. (Of course, nor-
mal operation would cease if PoE power
and data transport were both to fail on the
Ethernet connection made to Network A.)
A source of 12 volts DC can be connected
to the Model 48D by way of a 4-pin male
XLR connector which is located on the
back panel. While the requirement for
the external source is nominally 12 volts,
correct operation will take place with any
source over the range of 10 to 18 volts DC.
The Model 48D requires 150 milliamperes
maximum at 12 volts DC for correct opera-
tion. The DC source should be terminated
to a 4-pin female XLR connector with pin
1 negative (–) and pin 4 positive (+). Pur-
chased as an option, the PS-DC-02 power
supply is available from Studio Technolo-
gies. Its AC mains input allows connection
to a 100-240 volt, 50/60 Hz source and its
12 volt DC, 1.5 amperes maximum output
is terminated on a 4-pin female connector.
Configuration
The Dante Controller software application
will typically be used to review and make
changes to the configuration parameters
associated with the Model 48D’s two
Dante network interfaces. The Model 48D
does not provide a separate menu system,
e.g., one that is accessible using a web
browser. Alternatively, the Model 48D’s
front-panel LCD display and pushbutton
switches allow some configuration param-
eters to be viewed and, if desired, revised.
These directly relate to the most important
network connectivity parameters. This
ability to locally make changes can be very
useful when initially making connections to
the two network interfaces.
Model 48D configuration settings are made
and stored within each of the two Dante
interface circuits. They are fully indepen-
dent and need to reflect the operating
parameters required for each network.
The set of configuration parameters is
relatively limited and incorporates the
entire range of Model 48D functions.