Studio Technologies 201 User manual

50780-1223, Issue Preliminary 1
Copyright © 2023 by Studio Technologies, Inc., all rights reserved
studio-tech.com
User Guide
Issue Preliminary 1, December 2023
This User Guide is applicable for serial numbers
M201-00151 and later with Application Firmware version 1.00 and later
and STcontroller software application version 4.00.05 and later
Model 201
Interpreter’s Console

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Model 201 User Guide Issue Preliminary 1, December 2023
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Model 201
INTERPRETER’S CONSOLE
Table of Contents
Revision History ...................................................................................................................... 4
Introduction ............................................................................................................................. 5
Getting Started........................................................................................................................ 9
Dante Conguration ............................................................................................................... 11
Model 201 Conguration........................................................................................................ 12
Conrmation Message Files................................................................................................... 18
Operation ............................................................................................................................... 19
Technical Notes...................................................................................................................... 24
Specications......................................................................................................................... 27
Appendix A–STcontroller Default Conguration Values ......................................................... 29
Appendix B–Headphone EQ Response................................................................................. 30

Issue Preliminary 1, December 2023 Model 201 User Guide
Page 4 Studio Technologies, Inc.
Model 201
INTERPRETER’S CONSOLE
Revision History
Issue Preliminary 1, December 2023:
•Initial preliminary release.

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INTERPRETER’S CONSOLE
Introduction
The Model 201 Interpreter’s Console is a complete
solution for supporting applications that utilize special-
ized personnel who perform simultaneous language
interpretation. Suitable for use in single- or multi-
language situations, the Dante
®
audio-over-
Ethernet-enabled unit includes a range of features
not typically provided by “o󰀨-the-shelf” interpretation
equipment. The Model 201 provides both the standard
and advanced features required for successful de-
ployment in local or in o󰀨-site or remote applications.
The Model 201 includes the ability to create two
independent interpretation audio channels. Cong-
uration choices allow a variety of audio content to
be included in the interpretation audio; content that
can be automatically muted or dimmed (reduced in
level) when interpretation is active. This is especially
important for o󰀨-site or Internet streaming applica-
tions. A dual-channel (stereo) headphone output can
be congured to meet the needs of the interpreter.
This includes selecting the audio sources, channel
routing, and sidetone (condence) signal operation.
A set of buttons and rotary controls allow the user
to establish the operating condition they desire.
A “mic mute” button allows the connected microphone
to be momentarily muted. The frequency response
of the headphone output can be selected from four
equalization (EQ) settings. A talkback function allows
a separate audio path to be established from the inter-
preter to production personnel. A slow down function
allows the interpreter to signal to the presenter (the
“oor” source) that speaking more slowly is warranted.
The Model 201 is extremely simple to deploy, is “pro”
quality throughout, and provides an intuitive user
experience. The unit’s audio quality is excellent, with
low distortion, low noise, and ample headroom. Care-
ful circuit design and rugged components ensure long,
reliable operation. Only a Power-over-Ethernet (PoE)
connection and headset with attached microphone is
required for operation. The Model 201 supports both
“pro” headsets that use a 5-pin XLR connector as well
as “gaming” headsets that use 3.5 mm TRRS plugs. If
desired, two “custom” WAV audio les can be loaded
by way of a USB ash drive. These can be used for
aural conrmation of the Model 201’s two interpreta-
tion audio channels.
Figure 1. Model 201 Interpreter’s Console front
and back views
The Model 201 supports Dante audio-over-Ethernet
digital media technology for integration into contem-
porary applications. In addition to supporting standard
Dante, the unit is compatible with AES67 and the
Dante Domain Manager™ (DDM) software applica-
tion. Only a single 4-pair Ethernet cable is needed to
support both bi-direction data along with Model 201
DC power.
The Model 201’s operating features are congured
using the STcontroller software application. An
extensive set of parameters allows the unit’s functions
to be tailored to meet the needs of a range of inter-
pretation applications. The Model 201 is housed in a
compact but rugged steel enclosure that’s intended
for table-top use. Its small size makes it ideal for
applications in space-constrained locations.
While the Model 201 can be used by itself to create a
simple, single language interpretation position, it can
easily become part of a multi-language, feature-rich
application. By utilizing Dante technology, one or
more Model 201 units can integrate with other Studio

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Model 201
INTERPRETER’S CONSOLE
Technologies’ products to achieve a sophisticated
voice interpretation system. Applicable companion
units include the Model 391 Dante Alerting Unit, Model
5205 Mic/Line to Dante Interface, Model 5412 Audio
Interface, and Model 5421 Dante Intercom Audio
Engine. Other Dante-compliant products, such as
audio consoles or wireless microphone systems from
other manufacturers, will also directly interface with
the Model 201.
Headphone Output Channels
The Model 201 provides a 2-channel (stereo) output
that is routed to both the 5-pin female XLR and the
3.5 mm TRRS headset interface connectors. Two
pushbutton switches and three rotary controls on the
unit’s front panel allow users to select their desired
headphone audio sources and signal levels. One
pushbutton switch and two associated LED indica-
tors allow direct selection of either the Floor or Relay
Dante receiver (input) audio channels. Floor is the
term in the interpretation world for the audio channel
associated with the person whose text needs to be
translated. It may also be considered to be the “origi-
nal” audio channel. Relay is the term used for an inter-
mediate audio signal that would typically be supplied
by another interpreter. (A “relay” language is usually
selected as an interpretation technique to support
multiple languages. For example, English might be
selected as the relay language.) The selected audio
signal, Floor or Relay, is referred to by the Model 201
as the Main audio source and is sent to both the left
and right headphone outputs. A rotary control allows
the level of the Main audio signal to be adjusted.
Two additional Dante receiver (input) audio channels,
named Aux 1 and Aux 2, can be used to interface the
Model 201 with signal sources such as audio con-
soles, media playback systems, or remotely located
equipment. A rotary level control is used to adjust the
level of both Aux 1 and Aux 2 as they are sent to the
headphone output channels. Conguration choices in
the STcontroller application allow the Aux 1 and Aux 2
signals to be independently routed to the left, right, or
left and right headphone output channels. This allows
a variety of signal sources to be e󰀨ectively routed to
the headphone outputs.
A separate rotary level control is used to adjust the
level of the Model 201’s microphone preamplifier
signal as it is sent to the headphone output channels.
This is called the sidetone function and provides the
interpreter with a conrmation audio signal. A cong-
uration choice in the STcontroller application is used
to select the routing of the sidetone audio as it is sent
to the left and/or right headphone output channels.
The frequency response of the headphone output
channels can be selected from among four choic-
es: Flat and three equalized (modified response)
settings. Flat provides an unmodied version of the
selected audio signal as it is sent to the headphone
output channels. Choice A causes the low-frequen-
cy contents to be removed from the headphone
output channels. Choice B implements a boost to
the high-frequency range that will impact voice sig-
nals. Choice C combines the low-frequency roll o󰀨
of choice A along with the high-frequency boost of
choice B.
These four choices will allow an interpreter to opti-
mize the headphone output signals to best support
their work. A pushbutton switch allows selection of
the desired headphone audio response. Four LED
indicators display the currently selected EQ setting.
Unlike most interpreter console products that provide
analog rotary “tone” controls, the Model 201’s head-
phone equalization functions are created within the
digital domain. This has the advantage of being very
“unit-to-unit” accurate, allowing, for example, an EQ
selection of Choice B on one Model 201 to be identical
with Choice B on other Model 201 units.
Interpret Channels
The Model 201 provides two Dante transmitter (out-
put) channels that are intended for use in interpreta-
tion applications. This allows a Model 201 to support
one or two independent languages or audio paths.
Two pushbutton switches, one associated with each
interpret channel, operate in a latching (push on/
push o󰀨) manner. LED status indicators within the
switches display the current status of the interpret
channels. When an interrupt channel is active an
18 kHz sine-wave tone can also be added (summed)
with the microphone signal. This is provided for remote
(networked) applications where an indication that an
interpretation function is active may be required.
The STcontroller application allows selection of
the button color and whether a button is lit when
the function is o󰀨. In addition, a conguration selection
determines if only one, or both, of the interpretation
output channels can be active at any one time. A

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Model 201
INTERPRETER’S CONSOLE
separate pushbutton switch on the Model 201’s front
panel allows momentary muting of the microphone
signal when an interpret channel is active. This pro-
vides a “cough” function for the interpreter, allowing
them to temporarily mute their microphone signal as
needed.
An audio source can be assigned to each interpret
channel. This is called the Feedthrough Source and
can be independently selected for each channel
from the choices of Floor, Relay, Aux 1, or Aux 2.
A choice of None is also available. When an interpret
channel is not active (the connected microphone is
not actively being routed to an interrupt channel) the
selected audio source will be “fed through” to the
interpret Dante transmitter (output) channel. When the
interpret channel is active (the connected microphone
is being routed to an interrupt channel) an STcontroller
conguration selection determines what happens to
the feedthrough audio source. It can remain at full
level, be muted, or be reduced (dimmed) in level by a
x amount. This set of resources allows the interpret
channels to be congured for local use or to meet
the needs required by a variety of streaming and
broadcast applications. Experienced users may rec-
ognize the feedthrough function as being essentially
the same as a broadcast IFB (interrupted foldback)
function. This can be important for contemporary
interpretation applications but is normally not provided
by interpretation equipment.
Talkback
The Model 201 provides a talkback function, allowing
an interpreter to easily communicate with production
personnel. On the unit’s front panel is a pushbutton
switch and LED indicator dedicated to the talkback
function. An independent Dante transmitter (output)
audio channel is provided by the talkback function.
This signal can be routed (subscribed) to the Dante
input on an amplified speaker, an audio console,
or even a remote location. Whenever the talkback
function is active, audio is not routed to either of the
interpret Dante transmitter (output) channels.
The STcontroller application allows the operation
of the talkback function to be configured to meet
the needs of many applications. The function can
be disabled (o󰀨) as well as selected for one of four
operating modes. The pushbutton switch can operate
in a momentary or latching (push on/push o󰀨) manner
along with the ability to add an 18 kHz sine-wave
tone in addition to the microphone signal. This tone
would be appropriate when the Model 201 is used
in a distributed networked audio environment where
both talkback audio and a talkback function active
indication is warranted.
Slow Down Function
On the Model 201’s front panel are a pushbutton
switch and associated status LED that are utilized
by the slow down function. This function is provided
such that the interpreter can alert the event speaker
(the person being interpreted) to speak more slowly
and allow the interpreter to catch up with the speak-
er’s voice content. Technically, when the Model 201’s
slow down function is activated, a high-frequency
(18 kHz) sine-wave signal is sent out a Dante transmit-
ter (output) channel. This Dante output channel would
typically be routed to the receiver (input) channel on a
Dante-enabled device, such as a Studio Technologies’
Model 391 Dante Alerting Unit or a Model 392 Visual
Indicating Unit. The high-frequency signal can activate
the designated device and provide the speaker with
a slow down indication. The Model 391 or Model 392
would typically be located at the speaker’s lectern
where its visual indicator could be readily observed.
A conguration choice within the STcontroller appli-
cation allows the Model 201’s slow down function be
active for 1, 2, 3, 4, or 5 seconds after the slow down
button is momentarily pressed. A selection also allows
the function to be disabled.
The name slow down can at rst view be misleading.
The slow down function actually requires a complete
implementation, consisting of a Model 201, a Dante
network, and a means of displaying a slow down
request. Activating the Model 201’s slow down func-
tion simply provides an 18 kHz sine-wave tone on
the Slow Down/Hot Mic Dante transmitter (output)
channel. This Dante channel would be subscribed
(routed) to the input on a display device such as the
Studio Technologies’ Models 391 or 392.
Hot Mic Output
An “always on” microphone output function is provid-
ed for use in special applications. Called hot mic, it
provides access to the Model 201’s microphone audio
signal. It can be useful for production personnel who
need to hear the interpreter at all the times. It can
also be used as a dedicated channel for the record-
ing of all audio coming from an interpreter location.

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INTERPRETER’S CONSOLE
A conguration choice in the STcontroller application
allows the function to be o󰀨 (default) or on. The hot
mic audio signal shares the Dante transmitter (output)
channel that is also used for the slow down function.
Conrmation Messages
Deployment of one or more Model 201 Interpreter’s
Consoles in an application may benet from utilizing
the unit’s ability to store and playback WAV audio
files. Two audio files, each up to 40 seconds in
length, can be created in a high-quality 16-bit mon-
aural WAV format and then loaded into a Model 201
using a standard USB ash drive. It’s expected that
these messages will provide identication information
regarding the specic interpretation channels. This
can prove useful during system setup and operation.
They can be especially helpful when multiple Model
201 units are utilized in a single application. The ability
to provide a unique aural channel conrmation signal
to each audio channel may be extremely helpful to
production personnel. For example, the operator of an
audio console could readily identify specic interpreta-
tion channels and conrm that they are ready for use.
The on/o󰀨 status of each conrmation message is
controlled using the STcontroller application. When
enabled, a message will play continually, repeating
each time the end of the le is reached. The messag-
es can nd use locally and in remote interpretation
applications, ensuring that the correct interpretation
audio signal is being provided. No longer will “silent”
audio channels be designated for interpretation, with
technical personnel hoping that they will function
correctly when they need to.
Setup and Operation
Set up, configuration, and operation of the Model
201 are simple. An RJ45 jack is used to interconnect
the unit with a twisted-pair Ethernet port associated
with a PoE-enabled network switch. This connection
provides both power and bidirectional digital audio. A
dual-channel or single-channel (dual- or single-ear)
headset can be connected using a cable-mounted
5-pin male XLR connector. Alternately, a gaming or
computer headset with a 3.5 mm 4-conductor TRRS
plug can be used.
One or two “custom” audio les can be created and
loaded into the Model 201. They utilize the common
WAV le format supported by many personal comput-
er applications. The STcontroller software application
is used to configure the wide range of Model 201
operating parameters. This allows the unit’s perfor-
mance to be optimized to meet the needs of specic
applications.
The user is presented with seven pushbutton switches
and three push-in/push-out rotary potentiometers.
LEDs provide a status indication of the Model 201’s
various functions. All user controls are clearly labeled
and simple to operate.
Ethernet Data and PoE
The Model 201 connects to a local area network (LAN)
by way of a 100 Mb/s twisted-pair Ethernet interface.
The unit’s physical 100BASE-TX interconnection is
made by way of a Neutrik
®
etherCON
®
RJ45 jack.
While compatible with standard RJ45 plugs, an
etherCON CAT5-compatible plug allows a ruggedized
and locking interconnection for harsh or high-reliability
environments. The Model 201’s operating power is
provided by way of the Ethernet interface using the
802.3af Power-over-Ethernet (PoE) standard. This
allows fast and efficient interconnection with the
associated data network. To support PoE power man-
agement, the Model 201’s PoE interface enumerates
(reports) to the power sourcing equipment (PSE) that
it’s a class 1 (very low power) device.
Dante Audio-over-Ethernet
Audio data is sent to and received from the Model
201 using the Dante audio-over-Ethernet media net-
working technology. As a Dante-compliant device, the
Model 201’s four Dante transmitter (output) channels
and four Dante receiver (input) channels can be
assigned (routed or subscribed) to other devices using
the Dante Controller software application. The Dante
transmitter (output) and receiver (input) channels are
limited to supporting four Dante ows, two in each
direction. The digital audio’s bit depth is up to 32 with
a sampling rate of 48 kHz. On the Model 201’s back
panel, two bi-color LEDs provide an indication of the
Dante connection status. An additional LED displays
the status of the associated Ethernet connection.
The Model 201 is compatible with the AES67
interoperability standard. When congured in Dante
Controller to support AES67, the unit’s four transmit-
ter (output) channels will function only in multicast;
unicast is not supported. In addition, the Model 201
is compatible with the Dante Domain Manager (DDM)
software application.

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Model 201
INTERPRETER’S CONSOLE
Audio Quality
The Model 201 provides excellent audio performance.
A low-noise, wide dynamic-range microphone pre-
amplier and associated voltage-controlled-amplier
(VCA) dynamics controller (compressor) ensures that
headset microphone audio quality is preserved while
minimizing the chance of signal overload. The output
of the microphone preamp and compressor is routed
to an analog-to-digital conversion (ADC) section that
supports a sampling rate of 48 kHz with a bit depth
of up to 32.
As previously discussed, the Model 201 can store and
replay two audio les. These uncompressed PCM
audio signals utilize the high-quality 16-bit, monau-
ral, WAV format. The STcontroller application is used
to control the playback status of the confirmation
messages.
Up to four audio sources can arrive in the Model 201
by way of Dante receiver (input) channels. The sup-
ported sampling rate is 48 kHz with a bit depth of up
to 32. These signals pass into the Model 201’s 32-bit
microcontroller integrated circuit and then, following
the unit’s conguration and operator action, can be
routed to the headset output channels. The four
sources can also be used by the interpret channels
as feedthrough sources.
Depending on the unit’s conguration and operat-
ing state, the audio content of the interpret Dante
transmitter (output) channels can consist of headset
microphone audio only or a combination of headset
microphone and Dante receiver (input) sources. It’s
also possible to select the stored WAV les as the
source for the interpret output channels. The selected
interpret audio signals remain in the digital domain
and are routed through the 32-bit logic circuitry and
on to the Dante interface section where they are
packetized and prepared for transport over Ethernet.
Conguration Flexibility
The Model 201 can easily be congured to meet the
needs of specic applications and user preferenc-
es. All configuration choices are performed using
the STcontroller software application. Versions of
STcontroller are available to support the WinOS
®
and
macOS
®
operating systems. Selectable congurable
parameters include microphone power and preampli-
er gain, headphone operation, button LED indicator
intensity and color, and overall system operation. In
addition, operation of the two interpret channels can
be independently congured.
Of special interest is the conguration choice that
allows selection of how the pushbutton switch LEDs
will light under various operating conditions. This
capability is provided to assist users who have trouble
observing the di󰀨erences between colors, typically
issues di󰀨erentiating between red and green. The
“color blindness” condition is not uncommon in men
and can make e󰀨ective use of some electronic equip-
ment di󰀩cult. The Model 201’s ability to control the
talk pushbutton switches’ colors can also be useful
for supporting international applications where com-
pliance to specic regulatory requirements is required.
This may dictate which LED color is associated with
a function being “on” and which color is associated
with a function being “o󰀨.”
Future Capabilities and Firmware
Updating
The Model 201 was designed so that its capabilities
and performance can be enhanced in the future. The
unit implements a USB host function which allows
the application rmware (embedded software) to be
updated using a standard USB ash drive. And, as
previously discussed, the USB receptacle is also used
to load two WAV audio les. The Model 201 uses the
Audinate UltimoX4™ integrated circuit to implement
its Dante interface. The rmware in this integrated
circuit can be updated via the Ethernet connection,
helping to ensure that the unit’s capabilities remain
up to date.
Getting Started
What’s Included
Included in the shipping carton is a Model 201
Interpreter’s Console unit along with instructions on
how to obtain an electronic copy of this guide. As the
Model 201 is Power-over-Ethernet (PoE) powered,
no external power source is provided.
Connections
In this section, signal interconnections will be made
using the connectors located on the back panel of the
Model 201. An Ethernet connection will be made using
either a standard RJ45 patch cable or an etherCON
CAT5-compatible protected RJ45 plug. The unit’s
Ethernet interface requires connection of a signal that
supports Power-over-Ethernet (PoE). A dual-channel

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Page 10 Studio Technologies, Inc.
Model 201
INTERPRETER’S CONSOLE
or single-channel (dual- or single-ear) headset will
be connected using a cable-mounted 5-pin male
XLR connector. Alternately, a headset with a 3.5 mm
4-conductor TRRS plug can be used. (The headset’s
plug needs to follow the CTIA™/AHJ conguration
standard.)
Ethernet Connection
A 100BASE-TX Ethernet (100 Mb/s) connection that
also supports Power-over-Ethernet (PoE) is required
for Model 201 operation. This single connection will
provide both the Ethernet data interface and power for
the Model 201’s circuitry. The Ethernet connection is
made by way a Neutrik etherCON CAT5-compatible
protected RJ45 jack that is located on the back of the
Model 201’s enclosure. This ruggedized and locking
RJ45 jack allows connection of an Ethernet signal
by way of either a standard RJ45 plug or a cable-
mounted etherCON CAT5-compatible plug. The
Model 201’s Ethernet interface supports auto MDI/
MDI-X such that a crossover cable is never required.
The Model 201’s Ethernet connection enumerates
itself as a class 1 device. As such, a PoE power-
sourcing-equipment (PSE) port is required to supply
a modest 3.84 watts maximum of power.
Headset Connections
The Model 201 allows two di󰀨erent types of head-
sets to be connected. A 5-pin female XLR connector
is provided to support connection of a standard
broadcast- or intercom-style communications head-
set. A 3.5 mm 4-conductor TRRS jack allows a com-
puter or gaming headset to be directly connected. The
Model 201’s two headset connectors are electrically
wired in parallel. As such, only one type of headset
should be connected at one time.
Headset A
The Model 201 provides a 5-pin female XLR connector
that interfaces with the microphone and headphone
connections of a single- or dual-ear intercom-
or broadcast-style headset. The connector is labeled
Headset A. Refer to Figure 2 for connection details.
The connector’s microphone input connections are
compatible with most headsets that include dynamic
or electret (low-voltage DC-powered) microphones.
A balanced dynamic microphone should, in most
cases, also function correctly if its signal – (low) is
connected to Model 201’s mic in –/shield connection.
No support is provided for microphones that require
P12 or P48 phantom power.
To allow users of stereo (dual-earpiece or “double-
mu󰀨”) headsets to hear a monaural version of the two
headphone output channels does not require special
wiring of the 5-pin male XLR mating connector. The
headset’s left headphone channel should always be
wired to pin 4 and the right headphone channel to
pin 5. Conguration choices, discussed later, can then
be used to create the desired monaural output. It’s
important not to connect together (short) pins 4 and
5 of the headset’s connector as damage to the Model
201’s output circuitry could result.
A monaural (single-earpiece or “single-mu󰀨”) headset
should be wired such that its headphone is wired only
to pin 4; pin 5 should be remain unused. Congura-
tion choices, discussed later, can be used to create
a monaural output.
It’s possible that some beyerdynamic headset inter-
connecting cable assemblies terminate the earpiece’s
left and right connections opposite from what the
Model 201 and other equipment requires. These
cable assemblies may terminate the left earpiece to
pin 5 of the 5-pin male XLR connector and the right
earpiece to pin 4. If this condition is present, it will
require reversing or “flipping” the two wires in the
cable assembly’s connector such that the left earpiece
connects to pin 4 and the right earpiece to pin 5.
If a separate microphone and a pair of headphones
need to be connected to the Model 201 an adapter
cable assembly must be fabricated. It would consist of
a 5-pin male XLR connector wired to two connectors:
a 3-pin female XLR connector for the microphone and
a ¼-inch or 3.5 mm TRS jack for the headphones. In
this scenario, the microphone would typically be a
dynamic type as the Model 201 is only able to provide
Figure 2. Headset A connection pin-out chart

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Model 201
INTERPRETER’S CONSOLE
a low-voltage DC “electret” power source. Most hand-
held or “stick” microphones are dynamic and should
function correctly. Phantom-powered (P12 or P48)
condenser microphones would not be compatible.
Headset B
The Model 201 also allows direct connection of a
computer or gaming headset that is ubiquitous in the
personal computer world. The 3.5 mm 4-conductor
TRRS jack, labeled Headset B, is compatible with
the CTIA™/AHJ conguration standard which has
the headphone left channel on the tip connection,
the headphone right channel on the ring 1 connection,
common on the ring 2 connection, and the microphone
on the sleeve connection. Compatible headsets
should be readily available at a variety of price points
and o󰀨er a wide range of audio quality. The micro-
phones used in these headsets are electret type which
require a low-voltage DC source for operation. The
Model 201 is able to provide this power and requires
only that the appropriate setting in the STcontroller
software application be selected. Refer to Figure 3
for a detailed description of a compatible TRRS plug.
Audio Routing
The Model 201 has four transmitter (output) and four
receiver (input) channels that are associated with the
unit’s Dante interface. The transmitter (output) chan-
nels must be subscribed (routed) to the desired Dante
receiver (input) channels. This achieves routing of the
Model 201’s audio output channels to the device (or
devices) that will be “listening” to them. In addition,
the unit’s four Dante receiver (input) channels can be
subscribed (routed) with the devices that supply the
desired Dante transmitter (output) channels. These
four audio input channels can provide the floor,
relay, and auxiliary signals needed to support spe-
cic applications. Note that within Dante Controller a
“subscription” is the term used for routing a transmit-
ter ow (a group of up to four output channels) to a
receiver ow (a group of input channels).
As previously noted, the Model 201 uses an UltimoX4
integrated circuit to implement its Dante functional-
ity. The number of flows associated with this inte-
grated circuit is four; two transmitter (output) and two
receiver (input). (A ow can be unicast, multicast, or
a combination of the two.) With only two ows in each
direction, it’s possible that a ow limitation condition
could occur. If the Model 201’s Dante transmitter
(output) channels need to be subscribed (routed) to
more than two ows (typically two devices) it’s pos-
sible that an intermediary device, such as the Studio
Technologies’ Model 5421 or 5422A Dante Intercom
Audio Engine using their Pass Thru conguration,
can be used to “repeat” the signals and gain many
additional ows.
Note that when the AES67 mode has been enabled
in the Dante Controller application, the Model 201’s
Dante transmitter (output) channels will only function
in multicast; unicast is not supported.
Unit and Channel Names
The Model 201 has a default Dante device name of
ST-M201- and a unique su󰀩x. The su󰀩x identies
the specic Model 201 that is being congured. The
su󰀩x’s actual alpha and/or numeric characters relate
to the MAC address of the unit’s UltimoX4 integrated
circuit. The four Dante transmitter (output) chan-
nels have default names of Interpret1, Interpret2,
Talkback, and SlowDown/HotMic. The four Dante
receiver (input) channels have default names of Floor,
Relay, Aux1, and Aux2. Using Dante Controller, the
Figure 3. Headset B (TRRS) connection pin-out chart
Dante Conguration
For audio to pass to and from the Model 201 requires
conguration of several Dante-related parameters.
These configuration settings are stored in non-
volatile memory within the Model 201’s circuitry.
Dante parameter conguration will typically be done
with the Dante Controller software application, avail-
able for download free of charge at audinate.com.
Versions of Dante Controller are available to support
the Windows
®
and macOS
®
operating systems.
The Model 201’s Dante interface is compatible with
the Dante Domain Manager (DDM) software applica-
tion. Refer to the DDM documentation, also available
from Audinate, for details on which Model 201 and
related parameters may need to be congured.

Issue Preliminary 1, December 2023 Model 201 User Guide
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Model 201
INTERPRETER’S CONSOLE
default device and channel names can be revised as
appropriate for the specic application.
Device Conguration
The Model 201 supports an audio sample rate of
48 kHz with no pull-up/down options available. The
unit’s digital audio data is in the form of pulse-code
modulation (PCM) samples. Encoding choices within
Dante Controller are PCM 16, PCM 24, and PCM 32,
but in most cases the selection of PCM 24 would be
appropriate. Clocking and device latency parameters
can be adjusted within Dante Controller, if required,
but the default values are typically correct.
Network Conguration
Typically, the Model 201’s Dante IP address and
related network parameters will be determined auto-
matically using DHCP or, if that’s not available, the
link-local network protocol. If desired, Dante Controller
allows IP address and related network parameters to
be manually set to a xed or static conguration. While
this is a more-involved process than simply letting
DHCP or link-local “do their thing,” if xed addressing
is necessary then this capability is available.
AES67 Conguration – AES67
Mode
Dante Controller allows a Model 201 to be congured
for AES67 operation. This requires the AES67 mode
to be set for Enabled. As previously noted, if AES67
mode is Enabled then the Dante transmitter (output)
channels will use multicast.
Model 201 Clocking Source
While technically the Model 201 can serve as a Leader
clock for a Dante network (as can all Dante-enabled
devices), in most cases, the unit will be congured
to receive its timing reference (“sync”) from another
Dante device. As such, the Dante Controller check
box for the Preferred Leader that is associated with
the Model 201 would typically not be enabled.
Model 201 Conguration
The STcontroller software application is used to con-
gure the way in which the Model 201 functions. No
DIP switch settings or other local actions are used
to congure the unit. This makes it imperative that
STcontroller be available for convenient use on a per-
sonal computer that’s connected to the related LAN.
Installing STcontroller
STcontroller is available free of charge on the Studio
Technologies’ website (studio-tech.com). Versions are
available that are compatible with personal computers
running selected versions of the Windows and macOS
operating systems. If required, download and install
STcontroller onto a designated personal computer.
This personal computer must be on the same local
area network (LAN) and subnet as the Model 201 units
that are to be congured. Immediately after starting
the STcontroller application, it will locate all the Studio
Technologies’ devices that it can control. The one or
more Model 201 units to be congured will appear in
the device list.
Use the Identify command to allow easy recognition of
a specic Model 201 unit. Double-clicking on a device
name will cause the associated conguration menu to
appear. Review the current conguration and make
any changes that are desired.
Changes made using STcontroller will be immediately
reected in the unit’s operation; no Model 201 reboot
is required. Each time a change is made, three talk
pushbutton switches on the Model 201’s front panel
will ash orange in a distinctive pattern to indicate
that a command from STcontroller has been received.

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Model 201
INTERPRETER’S CONSOLE
General Menu Page
The following conguration selections are available in the General menu selections tab.
Microphone Input – Electret Power
Choices are O (select box not checked) and On
(select box checked).
Enable the Electret Power check box if the connected
headset has an electret microphone which requires a
source of low-voltage DC power for operation. The on/
o󰀨 status of microphone power is displayed by way of
an LED that is located on the Model 201’s back panel
adjacent to the Headset A connector. It lights red and
is labeled Mic Pwr.
In virtually all cases, a gaming or computer headset
that uses a 3.5 mm TRRS plug will have an electret
microphone element which will require microphone
power. If the associated headset has a dynamic
(non-powered) microphone do not enable the Electret
Power select box. Most broadcast or intercom head-
sets that terminate on a 5-pin male XLR connector
will have a dynamic microphone element and will not
require microphone power.
Note that the Model 201 cannot supply P12 or P48
phantom power that may be required to support
balanced condenser (capacitor) microphones. In
almost all cases, this should not pose an issue as
phantom-powered microphones are essentially
never associated with headsets that would be used
for Model 201 applications.
Microphone Input – Gain
Choices are 24 dB, 30 dB, 36 dB, 42 dB, and 48 dB.
The gain of the Model 201’s microphone preamplier
can be selected from among ve choices. The com-
pressor active LED, labeled Comp and located adja-
cent to the headset A connector, can act as a guide
when setting the preamplifier gain. When a voice
signal at a normal level is present on the connected
headset’s microphone, the compressor active LED
should light intermittently. If, for example, it rarely
lights and the gain is set to 36 dB, it might be a good
idea to change the setting to 42 dB. If the compressor
LED is lit fully during normal talking and the gain is set
for 42 dB or 48 dB, a change to one of the lower gain
settings might be warranted. There’s no “hard and
fast” rule about which microphone preamplier gain
setting is appropriate. But unless otherwise indicated,
30 dB is typically a good initial choice for a headset
that includes an electret microphone. For headsets
that use a dynamic microphone, 42 dB would typically
be a good initial preamplier gain choice.

Issue Preliminary 1, December 2023 Model 201 User Guide
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Model 201
INTERPRETER’S CONSOLE
Headphone Output – Main Routing
Choices are Left, Right, and Left and Right.
The rotary control on the left side of the Model 201’s
front panel is labeled Main and is used to adjust the
level of the main audio source as it is sent to the
headset’s headphone output. (The main audio source
is user-selected to be either the Dante Floor or the
Dante Relay receiver (input) channel.) There are three
choices as to which channel or channels are selected
for the destination.
Left: When this choice is selected, the selected main
audio source is routed to the left channel of the head-
set’s headphone output.
Right: When this choice is selected, the selected
main audio source is routed to the right channel of
the headset’s headphone output.
Left and Right: When this choice is selected, the
selected main audio source is routed to both the left
and right channels of the headset’s headphone output.
Headphone Output – Aux 1 Routing
Choices are O, Left, Right, and Left and Right.
The rotary control near the center of the Model 201’s
front panel is labeled Aux and is used to adjust the
level of both the Dante auxiliary audio sources as
they are sent to the headset’s headphone output. (If
desired, either or both of the auxiliary audio sources
can be utilized for a specic application.) There are
four choices as to which channel or channels are
selected for the destination.
O󰀨: When this choice is selected, any audio signal
associated with Aux 1 will be not used.
Left: When this choice is selected, the auxiliary 1 au-
dio source is routed to the left channel of the headset’s
headphone output.
Right: When this choice is selected, the auxiliary
1 audio source is routed to the right channel of the
headset’s headphone output.
Left and Right: When this choice is selected, the
auxiliary 1 audio source is routed to both the left and
right channels of the headset’s headphone output.
Headphone Output – Aux 2 Routing
Choices are O, Left, Right, and Left and Right.
The rotary control near the center of the Model 201’s
front panel is labeled Aux and is used to adjust the
level of both Dante auxiliary audio sources as they
are sent to the headset’s headphone output. (If
desired, either or both of the auxiliary audio sources
can be utilized for a specic application.) There are
four choices as to the channel or channels that are
selected for the destination.
O󰀨: When this choice is selected, any audio signal
associated with Aux 1 will be not used.
Left: When this choice is selected, the auxiliary 2
audio source is routed to the left channel of the head-
set’s headphone output.
Right: When this choice is selected, the auxiliary
2 audio source is routed to the right channel of the
headset’s headphone output.
Left and Right: When this choice is selected, the
auxiliary 2 audio source is routed to both the left and
right channels of the headset’s headphone output.
Headphone Output – Sidetone Routing
Choices are O, Left, Right, and Left and Right
The rotary control on the right side of the Model 201’s
front panel is labeled Sidetone and is used to adjust
the level of the sidetone audio source as it is sent
to the headset’sheadphone output. (The sidetone
audio source is always the output of the microphone
preamplier and is active whenever one of the inter-
pret functions or the talkback function is active.) The
sidetone function provides a microphone conguration
signal to assist users during Model 201 operation.
There are four sidetone routing choices.
O󰀨: If sidetone audio is not desired, then this choice
should be selected.
Left: When this choice is selected, sidetone audio is
routed to the left channel of the headset’s headphone
output.
Right: When this choice is selected, sidetone audio
is routed to the right channel of the headset’s head-
phone output.
Left and Right: When this choice is selected,
sidetone audio is routed to both the left and right
channels of the headset’s headphone output.

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Model 201
INTERPRETER’S CONSOLE
System – Button LED Action
Choices are Red when O / Green when On, Green
when O / Red when On, Unlit when O / Green
when On, and Unlit when O / Red when On.
The button LED action mode congures the manner
in which the red and green LEDs contained within the
two interpret and one mic mute pushbutton switches’
function. Understanding how each mode impacts
Model 201 operation will help ensure that desired op-
eration is obtained and that maximum usability occurs.
Red when O󰀨 / Green when On: When selected for
this mode, the three pushbutton switches will light
red when their associated function is in its o󰀨 state.
Specically, when an interpret channel is not active,its
pushbutton switch will light red. When an interpret
function is active, its associated button will light green.
When the headset’s microphone is not active, the
mic mute pushbutton switch will light red. When the
microphone is active, the button will light green.
Green when O󰀨 / Red when On: When selected for
this mode, the three pushbutton switches will light
green when their associated function is in its o󰀨 state.
Specically, when an interpret channel is not active, its
pushbutton switch will light green. When an interpret
function is active, its associated button will light red.
When the headset’s microphone is not active, the mic
mute pushbutton switch will light green. When the
microphone is active, the button will light red.
Unlit when O󰀨 / Green when On: When selected
for this mode, the three pushbutton switches will not
light when their associated function is in its o󰀨 state.
Specically, when an interpret channel is not active,
its pushbutton switch will not light. When an interpret
function is active, its associated button will light green.
When the headset’s microphone is not active, the
mic mute pushbutton switch will not light. When the
microphone is active, the button will light green.
Unlit when O󰀨 / Red when On: When selected for
this mode, the three pushbutton switches will not
light when their associated function is in its o󰀨 state.
Specically, when an interpret channel is not active,
its pushbutton switch will not light. When an interpret
function is active, its associated button will light red.
When the headset’s microphone is not active, the
mic mute pushbutton switch will not light. When the
microphone is active, the button will light red.
System – Interpret Button Action
Choices are One Only and Both.
The interpret button action mode determines the rela-
tionship between the two interpret functions.
One Only: When this mode is selected, either inter-
pret 1 or interpret 2 can be active at any one time.
However, they both cannot be active at the same time.
This is provided to help ensure that each interpret
channel will only have its desired audio content.
Both: When selected this mode, it’s possible to enable
both interpret 1 and interpret 2 at the same time.
System – Talkback Action
Choices are O, Momentary, Latching, Momentary
with 18 kHz Tone, and Latching with 18 kHz Tone.
The Model 201 provides a talkback function, allowing
a user to send headset microphone audio out a sep-
arate Dante transmitter (output) channel. Whenever
the talkback function is active, the interpret functions,
should either be active, will be forced to their o󰀨 state.
Two settings allow an 18 kHz sine-wave tone to be
included with the microphone audio. This will provide
a talkback active “tally” function for signaling other
equipment.
O󰀨: When this mode is selected, the talkback function
will be disabled.
Momentary: When this mode is selected, the talkback
function will be active whenever the talkback pushbut-
ton switch is pressed and held. Releasing the button
will cause the talkback function to return to its o󰀨 state.
Latching: Selecting this mode will cause the talkback
function to become active whenever the talkback
pushbutton switch is momentarily pressed (“tapped”).
The talkback function will remain active until the button
is again momentarily pressed.
Momentary with 18 kHz Tone: When this mode is
selected, the talkback function will be active whenever
the talkback pushbutton switch is pressed and held.
Releasing the button will cause the talkback function
to return to its o󰀨 state. The talkback output signal will
be a combination (sum) of audio from the output of
the microphone preamplier and an 18 kHz sine-wave
tone (at –20 dBFS) that is routed to the talkback Dante
transmitter (output) channel.

Issue Preliminary 1, December 2023 Model 201 User Guide
Page 16 Studio Technologies, Inc.
Model 201
INTERPRETER’S CONSOLE
Latching with 18 kHz Tone: Selecting this mode
will cause the talkback function to become active
whenever the talkback pushbutton switch is momen-
tarily pressed (“tapped”). The talkback function will
remain active until the button is again momentarily
pressed. The talkback output signal will be a combi-
nation (sum) of audio from the output of the micro-
phone preamplier and an 18 kHz sine-wave tone (at
–20 dBFS) that is routed to the talkback Dante trans-
mitter (output) channel.
System – Slow Down Function
Choices are O, 1 second, 2 seconds, 3 seconds,
4 seconds, and 5 seconds.
The Model 201 provides a Dante transmitter (output)
channel that will contain an 18 kHz sine wave tone
whenever the slow down function is active. (This Dan-
te channel is shared with the hot mic function.) This
function allows a user to signal to a related party that
slowing down of speech would be helpful, for example,
when an interpreter wants to request that a person
on the oor microphone speak more slowly. A visual
indicator, such as the Studio Technologies’ Model 391
Dante Alerting Unit, would typically be placed at a
podium. The Model 391 would respond to the 18 kHz
slow down tone and light an LED indicator.
Selecting Off will disable the slow down function.
Selecting one of the other ve choices will determine
the minimum length of time that an 18 kHz tone will be
sent. For example, selecting 2 seconds would cause a
momentary press (“tap”) of the slow down pushbutton
switch to initiate an 18 kHz tone to be present on the
Dante transmitter (output) channel for 2 seconds. By
selecting the appropriate length of time, the person at
the oor microphone can be alerted that a slow down
request is active.
System – Hot Mic Function
Choices are O and On.
A Dante transmitter (output) channel is shared with
the slow down function, providing an always-active
(hot mic) function. The source of the hot mic audio
signal is the output of the microphone preamplier.
This function can be useful in specialized applications
where audio from the connected microphone needs
to be monitored or utilized, no matter the status of the
interpret or talkback functions.
The SlowDown/HotMic Dante transmitter (output)
channel can contain both the slow down 18 kHz tone
and microphone audio. Typically, ltering to separate
the 18 kHz tone from the voice audio content will not
be required. A display device, such as the Studio
Technologies Model 391 Dante Alerting Unit, often
will contain internal high-pass ltering. This allows it
to ignore voice audio content. Someone monitoring
voice audio will, in most cases, not be able to hear
an 18 kHz tone. For those with excellent hearing, an
audio console’s low-pass lter can be used to remove
the high-frequency content.
O󰀨: When selected, the hot mic function is disabled
and microphone audio is not connected to the Dante
channel.
On: When selected, microphone audio will always
be present on the SlowDown/HotMic Dante channel.

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Model 201
INTERPRETER’S CONSOLE
Interpret Menu Page
The following congurations apply individually to channels 1 and 2. Each is available for the both channels
although only channel 1 will be described.
Channel 1 – Mode
Choices are Normal and Play Message 1.
This conguration choice displays and can be used
to select the overall operation of interrupt channel 1.
The two choices allow the channel to be used in a
“live” interpretation application or to continuously play
conrmation message 1 that is stored in the Model
201. Pushbutton switches on the Model 201 also allow
the user to directly control this mode.
Normal: When this mode is displayed or selected,
normal interpretation operation can take place. The
pushbutton switch labeled Interpret 1 will be used to
enable or disable interpret functionality. The cong-
ured feedthrough settings will be active.
Play Message 1: When this mode is selected, the
audio source associated with message 1 will be
routed to the interpret 1 Dante transmitter (output)
channel and normal interpret operation will cease.
The audio signal associated with message 1 will play,
repeating continuously. In this mode, the output of the
microphone preamplier will never be routed to the
interpret 1 Dante transmitter (output) channel nor will
be feedthrough audio be utilized.
Channel 1 – Action
Choices are Disabled, Talk, and Talk with 18kHz Tone.
This conguration determines the action of interpret
channel 1 when its pushbutton switch is active.
Disabled: In this mode, interpret 1 will never become
active. Pressing the pushbutton switch associated
with interpret 1 will not cause any action to occur. This
setting can be useful if only one of the two interpret
functions is going to be utilized.
Talk: If this mode is selected, when the interpret 1
function is active, audio from the output of the
microphone preamplier will be routed to the interpret
1 Dante transmitter (output) channel. The selected
feedthrough conguration will be active.
Talk with 18 kHz Tone: If this mode is selected, when
the interpret 1 function is active, a combination (sum)
of audio from the output of the microphone preampli-
er and an 18 kHz sine-wave tone (at –20 dBFS) will

Issue Preliminary 1, December 2023 Model 201 User Guide
Page 18 Studio Technologies, Inc.
Model 201
INTERPRETER’S CONSOLE
be routed to the interpret 1 Dante transmitter (output)
channel. This method is provided to allow equipment
“downstream” of the Model 201 to receive an indi-
cation that the interpretation function is active. Also,
the selected feedthrough conguration will be active.
Channel 1 – Feedthrough Source A
Choices are None, Floor, Relay, Aux 1, and Aux 2.
This conguration choice selects which audio signal
will be used as source A for the feedthrough function.
(Sources A and B will be combined (summed) to cre-
ate the overall feedthrough source.) The feedthrough
function allows one or two audio sources to be routed
to the interpret 1 Dante transmitter (output) channel.
Selecting Floor will be typical for interpretation ap-
plications when audio from a presenter, generally a
podium microphone, would be routed to the interpret
1 Dante transmitter (output) channel.
Channel 1 – Feedthrough Source B
Choices are None, Floor, Relay, Aux 1, and Aux 2.
This conguration choice selects which audio signal
will be used as source B for the feedthrough func-
tion. (Sources A and B will be combined (summed)
to create the overall feedthrough source.) Some
applications may require that a second audio source
be routed to interpret 1 Dante transmitter (output)
channel and it would typically be selected as source B.
Channel 1 – Feedthrough Dim when
Interpret Active
Choices are 0 dB, 5 dB, 10 dB, 15 dB, 20 dB, and
Full Mute.
This conguration selection determines what will hap-
pens to the level of the selected feedthrough source
when the interpret 1 function is active.
0 dB: Selecting this choice would cause no level
change to take place.
Full Mute: Selecting this choice will cause the feed-
through audio source to be fully attenuated (muted)
when the interpret 1 function is active.
Selecting one of the four numeric dB values will cause
the feedthrough source to be attenuated (reduced
in level) by the selected amount when interpret 1 is
active.
Conrmation Message Files
As previously discussed, two audio messages, each
up to 40 seconds in length, can be stored in non-
volatile memory within the Model 201. These are re-
ferred to as the message les and are in the 16-bit,
48 kHz sample rate, monoaural WAV(.wav) format.
Conguration choices determine when the messag-
es will be played during Model 201 operation. The
message files within the Model 201 can be easily
updated by way of a standard USB ash drive. These
les can contain whatever audio content is desired
to best support various applications. Typically, the
messages would be used to identify characteristics
of interpretation channels. For example, spoken text
“This is the English language channel.,” “This is the
French language channel.,” etc. By using the common
WAV le format to create and save the messages, the
desired audio message les can be created outside
of the Model 201 and then easily loaded into the unit.
Creating Audio Files
Audio content can be captured or created using stan-
dard audio techniques. Typically voice messages will
be utilized. To prepare this audio content for loading
into the Model 201 requires that they be in the 16-bit,
48 kHz sample rate, monaural WAV (.wav) format.
For compatibility with the Model 201, the names of
the two audio les must be M201Message1.wav and
M201Message2.wav.
Studio Technologies has had good success using the
open-source audio software from Audacity
®
to create
compatible audio message les. This software is avail-
able free of charge at audacityteam.org. However,
many other compatible audio recording and editing
programs are available for use with various personal
computer operating systems.
Loading Audio Files
The Model 201 has the ability to load installer-
created WAV les into non-volatile memory by way of a
standard USB ash drive. The Model 201 implements
a USB host function and provides access by way
of a type A receptacle located on the unit’s back
panel. The Model 201 updates its audio message
files using the names M201Message1.wav and
M201Message2.wav.

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Model 201
INTERPRETER’S CONSOLE
The update process begins by preparing a USB ash
drive. The ash drive doesn’t have to be empty (blank)
but must be in the personal-computer-standard FAT32
format. One or both of the audio message les can
be automatically loaded into the Model 201 at the
same time. In the ash drive’s root directory, save
the desired new file(s), ensuring that the required
name(s) are specied. The le name for message
le 1 must be M201Message1.wav. The le name for
message le 2 must be M201Message2.wav. After
copying les to the USB ash drive, be certain to use
the OS system’s eject command to ensure that they
are correctly stored.
Once the USB ash drive is inserted into the USB
receptacle, located on the Model 201’s back panel,
the unit must be powered o󰀨 and again powered on.
At this point, the message le(s) will automatically
load. To install either or both message les follow
these steps:
1. Remove power from the Model 201. This will entail
removing the PoE Ethernet connection from the
etherCON RJ45 jack that’s located on the unit’s
back panel.
2. Locate the USB receptacle, labeled WAV Files &
Firmware Update, on the Model 201’s back panel.
Directly adjacent to the USB receptacle is a small
hole that provides visual access to a green LED
indicator.
3. Insert the prepared USB ash drive into the USB
receptacle.
4. Apply Power-over-Ethernet (PoE) power to the
Model 201 by connecting the Ethernet interface
cable to the unit’s RJ45 jack.
5. After a few seconds the Model 201 will run a “boot
loader” program that will automatically load and
save the new audio message le(s) that are present
on the USB ash drive. The update process can
range from approximately 5 seconds to approxi-
mately 45 seconds. The actual time will depend on
the le’s size (up to 40 seconds of audio playback)
and the number of WAV les (one or two) that are
being loaded. While the le(s) are being loaded the
green LED, located adjacent to the USB recepta-
cle, will ash slowly. The Interpret 1 and Interpret 2
pushbutton switches on the front panel will indicate
the status of the loading process. They will ash
orange when the loading processing is taking place.
They will light green if the one or two audio message
les were successfully loaded. They will light red if
the loading process was not successful. Once the
le-loading process has completed, the Model 201
will restart.
6. At this time, the Model 201 will be functioning with
the newly loaded message le(s). The USB ash
drive can now be removed from the USB receptacle.
To be conservative, rst remove the PoE Ethernet
connection, then remove the USB ash drive, and
then reconnect the PoE Ethernet connection.
7. Confirm that the desired audio message file(s)
have been loaded into the Model 201. This will
typically require listening to the two Interpret Dante
transmitter (output) audio channels. The manner in
which the interpret channels utilize the messages
will depend on how the Model 201 has been con-
gured using the STcontroller application.
Note that upon power being applied to the Model
201, if the USB ash drive doesn’t contain compatible
message le(s) in its root folder no harm will occur.
Upon power up, the green LED, located adjacent to
USB receptacle, will ash on and o󰀨 rapidly for a few
seconds to indicate that no valid les have not been
found. Once that has completed, normal Model 201
operation using the unit’s existing message les will
begin.
Operation
At this point, all connections and conguration steps
should have been completed and everything should
be ready for Model 201 operation to commence. The
unit should have been placed at the desired physical
location. An Ethernet connection with Power-over-
Ethernet (PoE) capability should have been made
to the unit’s etherCON RJ45 jack. A headset that
includes a microphone should have been connected.
The Model 201’s Dante conguration settings should
have been selected using the Dante Controller soft-
ware application. In this way, the unit’s four Dante
transmitter (output) channels and four Dante receiver
(input) channels would have been routed, by way
of Dante “subscriptions,” to the desired receiver
and transmitter channels on associated Dante-
enabled equipment. Using the Studio Technologies’
STcontroller software application, the unit’s congu-
ration should have been selected to meet the needs
of the specic application. If desired, one or two audio

Issue Preliminary 1, December 2023 Model 201 User Guide
Page 20 Studio Technologies, Inc.
Model 201
INTERPRETER’S CONSOLE
conrmation message les should have been created
and loaded into the Model 201.
Initial Operation
The Model 201 will begin to function as soon as a
Power-over-Ethernet (PoE) source is connected.
However, it will typically take 20 to 30 seconds for
full operation to commence. Upon initial power up,
the three status LEDs, located on the back panel
below the etherCON RJ45 jack, will begin to light as
network and Dante connections are established. The
microphone compressor LED (labeled Comp), also
located on the back panel, may momentarily ash
orange. The green rmware update LED, located on
the back panel adjacent to the USB receptacle, will
slowly ash approximately ve times as the internal
processor becomes active.
The red and green LEDs within the mic mute and
interpret pushbutton switches, and the green LEDs
associated with other functions, will light in a short test
sequence to indicate that they are functioning correct-
ly and the application rmware (embedded software)
has started. Then interpret pushbutton switches 1
and 2 will light sequentially to indicate that the unit
is ready to load new conrmation message les and
display their loading status. These les would be pre-
sented to the unit by way of WAV les on an attached
USB ash drive. Interpret button 1 is associated with
conrmation message le 1. It will slowly ash orange
three times and then light green if a new le 1 has
been loaded or light red if a new le 1 was not loaded.
The LED associated with button 1 will then remain lit
and button 2 will indicate the outcome of the unit’s
attempt at loading a new conrmation message le 2.
Button 2 will ash orange three times to indicate that
the loading process is pending. The button will then
light red if no le 2 was loaded or light green if a new
le was loaded. After a brief pause, the LEDs in talk
buttons 1 and 2 will stop lighting.
Note that in most power-up sequences, new conr-
mation message audio les will not be loaded. The
interpret button LEDs are simply used to display the
status of the loading process. Their ashing orange
and then lighting red doesn’t indicate a problem. It just
indicates that the le loading process was available
but was not required.
Once the entire start-up sequence has completed and
the Dante connection has been established, full oper-
ation will begin. The various LEDs will then become
operational, displaying the status of their designated
functions.
How to Identify a Specic
Model 201
Functions within the Dante Controller and STcontroller
software applications allow a specic Model 201 unit
to be identied. Each application provides an “eye-
ball” icon that when clicked will activate the Identify
function. When this function is selected, a command
will be sent to a specic Model 201 unit. On that unit
the red LEDs associated with the mic mute and two
interpret channel pushbutton switches will ash three
times (but the actual on/o󰀨 status of the buttons will
not change). In addition, the Sys and Sync status
LEDs, located directly below the etherCON RJ45 jack
on the back panel, will slowly ash four times. After a
few seconds the LED identication pattern will cease
and normal Model 201 pushbutton switch LED and
Dante status LED operation will resume.
Ethernet and Dante Status LEDs
As previously discussed, there are three status LEDs
located below the etherCON RJ45 jack on the Model
201’s back panel. The Link Act LED will light green
whenever an active connection to a 100 Mb/s Ether-
net network has been established. It will then ash in
response to all Ethernet data packet activity. The Sys
and Sync LEDs display the operating status of the
Dante interface and its associated network activity.
The Sys LED will light red during Model 201 power up
to indicate that the Dante interface is not ready. After
a short interval, it will light green to indicate that it is
ready to pass data with another Dante device. The
Sync LED will light red when the Model 201 is not
synchronized with a Dante network. It will light green
when the unit is synchronized with a Dante network
and an external clock source (timing reference) is
being received. It will slowly ash green when this
specic Model 201 is part of a Dante network and is
serving as the Leader clock. It’s possible that up to 30
seconds may be required for the Sync LED to reach
its nal state.