Manual

Issue 1, September 2015 Model 43D User Guide
Page 6 Studio Technologies, Inc.
use analog interfacing. Careful attention
to circuit design and component selec-
tion ensures that excellent audio quality
is maintained. Audio level meters provide
confirmation of system performance dur-
ing setup and operation. The Model 43D
can be powered by Power-over-Ethernet
(PoE) or an external source of 12 volts DC.
Standard connectors are used for the
powered IFB outputs, line-level IFB out-
puts, Ethernet, and DC power intercon-
nections. The Model 43D’s enclosure has
a “1/2-rack” 1U form factor and weighs
less than two pounds, making it well
suited for use in portable applications.
Alternately, using one of the optional rack-
mount front panels, one or two Model 43D
units can be mounted in a single space
(1U) of a standard 19-inch rack enclosure.
Dante Audio-over-Ethernet
Audio data is sent to the Model 43D us-
ing the Dante Audio-over-Ethernet media
networking technology. Audio signals with
a sample rate of 44.1 or 48 kHz and a bit
depth of up to 24 are supported. Four
transmitter (output) channels on associ-
ated Dante-enabled source devices can
be assigned to the Model 43D’s receiver
(input) channels using the Dante Control-
ler application. This makes it simple to
select the way in which a Model 43D fits
into a specific application.
Applications
The Model 43D was designed to add
broadcast-standard 2-channel IFB func-
tionality to Dante-enabled broadcast
and related applications. Combining the
networked audio capability of Dante with
traditional analog powered (“wet”) and
non-powered (“dry” or line-level) IFB
outputs allows traditional and effective
cueing methods to be maintained.
The Model 43D can be used in applica-
tions where IFB (talent cueing) channels
are created in matrix intercom systems
and become part of a Dante Audio-over-
Ethernet network deployment. Output
ports on matrix intercom systems that
directly support Dante, such as the RTS
ADAM® with OMNEO®, can be routed
to the Model 43D’s Dante receiver (input)
channels. The Model 43D’s circuitry will
then convert these signals into standard
analog IFB audio outputs. In this way add-
ing IFB support for RTS + OMNEO infra-
structures is a simple task. Other matrix
intercom and broadcast router systems
also directly support Dante. The Model
43D can also be used with matrix inter-
com systems that don’t support Dante. An
external analog-to-Dante interface can be
used to convert analog intercom output
ports to Dante channels. For example, the
Studio Technologies Model 44D Audio
Interface does an excellent job of con-
verting line-level analog signals to Dante
digital audio channels. Once in the digital
domain, these Dante channels can be in-
terconnected with the Model 43D’s audio
input channels.
In applications where on-air talent uses
headsets with two earphones (stereo or
“dual muff”) two unique audio channels
are typically part of the provided IFB signal
source. Generally one channel is config-
ured in a matrix intercom system as “inter-
rupt” while the other channel is configured
as “program.” (In U.S. applications the
former signal is assigned to the left ear
and the latter signal to the right ear.) An
alternate term often used for the “inter-
rupt” channel is “program-with-interrupt.”