Studio Technologies 45DR - Manual (Page 9)

Model 45DR User Guide Issue 2, January 2015
Studio Technologies, Inc. Page 9
Simple Installation
The Model 45DR uses standard connec-
tors to allow fast and convenient intercon-
nections. An Ethernet signal is connected
using a Neutrik etherCON RJ45. If Power-
over-Ethernet (PoE) is available operation
will commence immediately. An external
12 volt DC power source can also be con-
nected by way of a 4-pin XLR. Party-line
intercom connections are made using
3-pin male and female XLR connectors.
The Model 45DR is housed in a rugged
yet lightweight aluminum enclosure that is
designed to be “field tough.” It can be used
as a standalone portable unit, supporting
what’s known in the broadcast world as
“throw-down” applications. Rack-mount
options are also available allowing one or
two units to be mounted in one space (1U)
of a standard 19-inch rack enclosure.
Future Capabilities and
Firmware Updating
The Model 45DR was designed so that its
capabilities can be enhanced in the future.
A USB connector, located on the Model
45DR’s back panel, allows the application
firmware (embedded software) to be updat-
ed using a USB flash drive. To implement
the Dante interface the Model 45DR uses
Audinate’s Ultimo™ integrated circuit. The
firmware in this integrated circuit can be
updated via the Ethernet connection, help-
ing to ensure that its capabilities remain up
to date.
Installation
In this section signal interconnections will
be made using the connectors located on
the back panel of the Model 45DR. Con-
nections to one or more party-line user
devices or an existing party-line intercom
circuit will be made using one of the 3-pin
XLR connectors. An Ethernet data connec-
tion will be made using either a standard
RJ45 patch cable or an etherCON protect-
ed RJ45 plug. A 4-pin XLR connector al-
lows the connection of an external source
of 12 volts DC.
System Components
Included in the shipping carton are the
Model 45DR Intercom Interface and a user
guide. If a rack-mount front panel is going
to be used as part of the installation it will
typically be shipped in a separate carton.
If the installation or specific application
requires an external source of 12 volts DC
it needs to be provided separately. An ap-
plicable power supply, the Studio Technol-
ogies PS-DC-02, is available as an option.
Locating the Model 45DR
The location of the Model 45DR will de-
pend on the length of the cable runs
needed to link the unit with the associated
party-line intercom devices. This type of
circuit carries unbalanced audio which can
be susceptible to interference and cross-
talk issues. And since party-line intercom
circuits typically carry DC power a voltage
drop due to resistive loss can become an
issue. In general, minimizing the length
of the party-line intercom cables will help
ensure more reliable and consistent inter-
com system performance. Of equal impor-
tance is the 100-meter (325-foot) Ethernet
cable limitation. A final location criterion is
to ensure that access to the Model 45DR’s
front panel is available. An optimal loca-
tion will allow convenient use of the auto
null pushbutton and easy observation of
the status and level meters LEDs.