Datasheet
50657-0719, Issue 3
Key Features
• Dante audio-over-Ethernet technology
• Four independent talk and listen channels
• Supports dynamic and electret microphones
• 5-pin female XLR headset connector
• Configurable operating modes
• Excellent audio quality
• Uses STcontroller for configuration
• AES67 and Dante Domain Manager™ support
• Power-over-Ethernet (PoE) powered
Introduction
The Model 374A Intercom Beltpack begins with the
features offered by traditional party-line intercom user
devices and adds a range of new capabilities along with
the advanced performance and flexibility 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 permanently 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 using the STcontroller software application.
Configurable parameters include electret microphone
powering, microphone preamplifier gain, talk button opera
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tion, and headphone channel assignment. User features
include integrated sidetone, remote 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 power
-
ful 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 associated 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 parameters. 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.
The audio quality of the Model 374A’s four audio chan
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nels is excellent, with low distortion, low noise, and high
headroom. Careful circuit design and rugged components
Model 374A Intercom Beltpack
Four Channels, Dante® Technology