Manual

Model 370A User Guide Issue 2, August 2019
Studio Technologies, Inc. Page 9
MODEL 370A
INTERCOM BELTPACK
always be wired to pin 4 and the right
headphone channel to pin 5. Configura-
tion choices, discussed later in this guide,
can then be used to create the desired
monaural output. It’s important not to con-
nect together (short) pins 4 and 5 of the
Model 370A’s headset connector as dam-
age to the Model 370A’s output circuitry
could result.
Monaural (single-earpiece or “single
muff”) headsets should be wired such that
its headphone is wired only to pin 4; pin 5
should be remain unused. Configuration
choices, discussed later in this guide, can
be used to create a monaural output.
It’s possible that some Beyerdynamic
headset interconnecting cable assemblies
terminate the earpiece’s left and right con-
nections opposite from what the Model
370A and other broadcast equipment
require. These cables may terminate the
left earpiece to pin 5 of the XLR connec-
tor and the right earpiece to pin 4. If this
condition is present it will require reversing
or “flipping” the two wires in a headset’s
5-pin male XLR connector such that the
left earpiece connects to pin 4 and the
right earpiece to pin 5.
Dante Configuration
For audio to pass to and from the Model
370A requires that several Dante-related
parameters be configured. These configu-
ration settings will be stored in non-volatile
memory within the Model 370A’s circuitry.
Configuration will typically be done with
the Dante Controller software application
which is available for download free of
charge at www.audinate.com. Versions
of Dante Controller are available to sup-
port Windows® and OS X® operating
systems. The Model 370A uses the Ultimo
2-input/2-output integrated circuit to imple-
ment the Dante architecture.
The two Dante transmitter (Tx) channels
associated with the Model 370A’s Dante
interface must be assigned to the desired
receiver (Rx) channels. This achieves rout-
ing the Model 370A’s two talk output audio
channels to the device (or devices) that
will be “listening” to them. Within Dante
Controller a “subscription” is the term
used for routing a transmitter flow (a group
of output channels) to a receiver flow (a
group of input channels). The number of
transmitter flows associated with an Ultimo
integrated circuit is limited to two. These
can either be unicast, multicast, or a com-
bination of the two. If the Model 370A’s
transmitter channels need to be routed us-
ing more than two flows it’s possible that
an intermediary device, such as the Studio
Technologies Model 5422 Dante Intercom
Audio Engine, can be used to “repeat” the
signals. (Use the Model 5422’s pass-thru
group configuration mode to provide this
resource.)
The two Dante receiver (Rx) channels
associated with the Model 370A’s audio
inputs also need to be routed to the Dante
transmitter (Tx) channels provided by the
desired source device. These two audio
signals can be sent to the Model 370A’s
2-channel headphone output.
The Model 370A supports an audio
sample rate of 48 kHz with no pull-up/pull-
down values available. The Model 370A
can serve as the clock master for a Dante
network but in most cases it will be con-
figured to “sync” to another device that
is serving as the “grand master” for the
Dante implementation.