Manual

Model 381 User Guide Issue 2, March 2020
Studio Technologies, Inc. Page 5
MODEL 381
ON-AIR BELTPACK
Introduction
The Model 381 On-Air Beltpack offers a
unique combination of audio resources
to directly support a complete broadcast
“stand-up” on-air position. Using Dante®
audio-over-Ethernet technology, the unit
provides main and talkback output channels,
talent cue (IFB) input, and sidetone capabili-
ties, as well as essential user controls in
a compact, portable package. The Model
381 is compatible with the Dante Domain
Manager™ (DDM) software application and
is AES67-compliant for direct integration into
many contemporary networked audio appli-
cations.
Optimized for broadcast sports and live en-
tertainment events, eSports, news-gathering,
and streaming broadcast applications, the
Model 381 allows incredibly simple deploy-
ment while maintaining “pro” audio quality
and an intuitive user experience. With just
a Power-over-Ethernet (PoE) connection, a
dynamic or phantom-powered microphone,
and a pair of headphones or an earpiece,
the unit will be ready for “on-air” deploy-
ment. The STcontroller software application
is used for configuring operating parameters
including microphone preamplifier gain, P48
phantom power, headphone signal routing,
sidetone operation, and talkback button
action. The Model 381’s audio quality is
excellent, with low distortion, low noise, and
high headroom. Careful circuit design and
rugged components ensure long, reliable
operation.
Applications
The Model 381 provides an “all-Dante”
solution for one on-air talent location. Two
Dante audio input channels supply the user
with their talent cue (IFB) signals. Should
the cue signal be “mix-minus” an integrated
sidetone function can provide the user with
a microphone confidence signal. Two Dante
audio output channels, one designated
as main (for “on-air” use) and the other
talkback, are routed via the associated
local-area network (LAN) to inputs on
Dante-compatible devices. A pushbutton
switch, located on the Model 381’s top
panel, provides a combination talkback
and “cough” function. When talkback is
not active audio associated with the micro-
phone preamplifier is routed to the Dante
main output channel; the Dante talkback
output channel is muted. When the talkback
function is active audio is muted on the
Dante main output channel and activated
on the Dante talkback output channel. The
audio switching is performed in the digital
domain and is virtually “click-free.”
Figure 1. Model 381 On-Air Beltpack top and bottom views