Manual

Model 374A User Guide Issue 3, August 2019
Studio Technologies, Inc. Page 5
MODEL 374A
INTERCOM BELTPACK
Introduction
The Model 374A Intercom Beltpack
begins with the features offered by tradi-
tional party-line intercom user devices and
adds a range of new capabilities along
with the advanced performance and flex-
ibility that Dante® audio-over-Ethernet
provides. With four independent talk and
listen channels the Model 374A bridges
the gap between typical single- and dual-
channel party-line devices and permanent-
ly installed multi-channel intercom panels.
Imagine the possibilities—four channels
of high-quality party-line intercom in a
compact, user-worn package.
Over a standard IP network, multiple
Model 374A units can be used in party-
line (PL) intercom applications with help
from an external Dante-enabled audio
matrix such as the Studio Technologies’
Model 5422 Dante Intercom Audio Engine.
Or, units can be used “point-to-point” or
interfaced with Dante-compatible matrix
intercom systems.
Only a single Power-over-Ethernet (PoE)
connection is required for operation. Key
user features can be easily configured us-
ing the STcontroller software application.
Configurable parameters include electret
microphone powering, microphone pre-
amplifier gain, talk button operation, and
headphone channel assignment. User
features include integrated sidetone, re-
mote mic kill (“talk off”), call function, and
monitor-only modes. The wide range of
capabilities, along with the excellent audio
quality provided by the digital audio signal
path, offers a unique and powerful user
experience.
Set up and configuration of the Model
374A is simple. An etherCON® RJ45
receptacle is used to interconnect with a
standard twisted-pair Ethernet port as-
sociated with a local-area network (LAN).
This connection provides both power and
bidirectional digital audio. A broadcast or
intercom-style stereo or monaural headset
with a dynamic or electret (DC-powered)
microphone interfaces with the unit using
a 5-pin XLR connector.
The STcontroller software application is
used to select the unit’s operating pa-
rameters. Four talk pushbutton switches
can be configured for optimal operation.
Four push-in/push-out (“pop out”) rotary
controls make it easy to set and maintain
the desired headphone output level. The
Model 374A’s enclosure is made from
an aluminum alloy which offers both light
weight and ruggedness. A stainless steel
“belt clip,” located on the back of the
unit, allows direct attachment to a user’s
clothing.
Figure 1. Model 374A Intercom Beltpack top and bottom views