Studio Technologies 205 Manual de usuario
Copyright © 2020 by Studio Technologies, Inc., all rights reserved
www.studio-tech.com
User Guide
Issue 3, August 2020
This User Guide is applicable for serial numbers
M205-00501 and later with application firmware 1.4 and later
and STcontroller application version 2.04.00 and later.
50641-0820, Issue 3
Model 205 Announcer’s Console
This page intentionally left blank.
Model 205 User Guide Issue 3, August 2020
Studio Technologies, Inc. Page 3
MODEL 205
ANNOUNCER’S CONSOLE
Table of Contents
Revision History ........................................................... 4
Introduction ................................................................... 5
Getting Started ............................................................. 10
Operation ...................................................................... 19
Technical Notes ............................................................ 24
Specifications ............................................................... 28
Appendix A: Model 205 Block Diagram ........................ 29
Issue 3, August 2020 Model 205 User Guide
Page 4 Studio Technologies, Inc.
MODEL 205
ANNOUNCER’S CONSOLE
Revision History
Issue 3, August 2020:
• Documents addition of Main Out Tally function. (Applies only to serial numbers
M205-00501 and later.)
Issue 2, October 2018:
• Documents addition of the Push to Mute/Tap to Latch main button operating mode.
Issue 1, April 2018:
• Initial release.
Model 205 User Guide Issue 3, August 2020
Studio Technologies, Inc. Page 5
MODEL 205
ANNOUNCER’S CONSOLE
Introduction
The Model 205 Announcer’s Console of-
fers a unique combination of analog and
digital audio resources for use in broadcast
sports, eSports, live event, entertainment,
and streaming broadcast applications. The
unit is housed in a compact, rugged steel
enclosure that’s intended for table-top
use. Calling the Model 205 “cute” or “cool”
would be accurate; its nicely proportioned
but diminutive size makes it ideal for use
in space-constrained locations. The Model
205 supports Dante® audio-over-Ethernet
digital media technology with AES67 com-
patibility for integration into contemporary
applications. The unit is extremely simple
to deploy, is “pro” quality throughout, and
provides an intuitive user experience. The
Model 205’s audio quality is excellent, with
low distortion, low noise, and ample head-
room. Careful circuit design and rugged
components ensure long, reliable operation.
The Model 205 integrates directly into both
Dante audio-over-Ethernet and standard
analog audio environments. With just a
Power-over-Ethernet (PoE) connection, a
microphone, and a pair of headphones or
an earpiece, a complete broadcast on-air
position can be created. And by using the
Model 205’s microphone output a direct
connection to an analog microphone-level
input on an associated camera, remote I/O
interface, or audio console can be support-
ed. Two remote control inputs allow external
switches or contact closures to activate the
main and talkback button functions. One of
the inputs can also be configured to provide
a low-voltage DC “tally” output that follows
the state of the main output.
Model 205 operating features are config-
ured using the STcontroller personal com-
puter software application. An extensive set
of parameters allows the unit’s functions to
be tailored to meet the needs of many ap-
plications. STcontroller is a fast and simple
means of confirming and revising the unit’s
operating parameters.
Applications
The Model 205 on its own can provide an
“all-Dante” solution for one on-air talent
location. A wide range of applications can
be supported, including sports and enter-
tainment TV and radio events, streaming
broadcasts, corporate and government AV
installations, and post-production facili-
ties. The unit’s small size makes it ideal for
live-sports applications, such as basketball,
where physical space for personnel is very
limited. Four Dante receiver (audio input)
channels supply the user with their talent
cue (IFB) signals. Should the cue signal
Figure 1. Model 205 Announcer’s Console front
and rear views
Issue 3, August 2020 Model 205 User Guide
Page 6 Studio Technologies, Inc.
MODEL 205
ANNOUNCER’S CONSOLE
be “mix-minus” an integrated sidetone func-
tion can provide the user with a microphone
confidence signal. Three Dante audio out-
put channels, one designated as main and
two as talkback, are routed via an associ-
ated local-area network (LAN) to inputs on
Dante-compatible devices. Three pushbutton
switches, main and two talkback, provide
the user with direct control over audio rout-
ing. The audio switching is performed in the
digital domain and is virtually “click-free.”
By providing the main audio signal in two
forms, Dante digital audio and analog micro-
phone level, the Model 205 makes integra-
tion into a wide range of on-air environments
easy to accomplish. And with the two talk-
back audio channels available as Dante out-
put channels, routing to inputs on a variety
of devices, such as matrix intercom systems,
audio consoles, and monitor loudspeaker
systems, is simple and flexible.
Some applications may benefit from not
utilizing the Model 205’s Dante main output
channel. This typically won’t be an issue of
inadequate audio quality but rather a need to
match work-flow requirements. For example,
for lip-sync or transmission purposes it may
be optimal to have the on-air audio trans-
ported as an embedded signal along with
the associated camera video. Alternately, all
on-air audio sources may need to connect
to inputs on an audio console or console-re-
lated I/O unit. Supporting these scenarios is
not a problem as the Model 205 supplies a
microphone output connection that’s specifi-
cally intended for this purpose. Simply con-
nect the unit’s microphone output connection
to the desired analog input, such as the mic/
line input on an ENG-style camera—that’s it!
The circuitry associated with the Model 205’s
analog microphone output is very simple, es-
sentially a passive path that routes a signal
connected to the microphone input connec-
tor directly to the microphone output con-
nector. A solid-state circuit, in series with
the mic in-to-mic out path, allows muting of
the signal on the microphone output con-
nector whenever the Dante main output
channel is muted. Having both the Dante
main output and the microphone outputs
work in tandem can be a valuable resource,
allowing one to serve as the primary on-air
signal source while the other serves as the
backup.
Setup and Operation
Set up, configuration, and operation of the
Model 205 is simple. An etherCON® RJ45
jack is used to interconnect with a standard
twisted-pair Ethernet port associated with
a PoE-enabled network switch. This con-
nection provides both power and bidirec-
tional digital audio. A broadcast headset
or handheld (“stick”) microphone can be
directly connected to the unit’s 3-pin XLR
mic input connector. The input is compatible
with dynamic or condenser microphones.
The integrated P48 phantom power source
provides support for a wide range of con-
denser microphones. A 3-pin XLR micro-
phone output connector provides a “direct
mic out” function for integration with micro-
phone inputs on related devices. Stereo
headphones, the headphone connections
from a stereo or monaural headset, or even
a monaural earpiece can be connected to
the phones output jack.
External switches or contact closures can
be connected to the Model 205’s remote
control inputs to allow activation of the
main and talkback button functions. A low-
voltage/low-current DC output can also be
implemented providing a Main Out Tally
function. The STcontroller software applica-
tion is used to configure the wide range of
Model 205 User Guide Issue 3, August 2020
Studio Technologies, Inc. Page 7
MODEL 205
ANNOUNCER’S CONSOLE
Model 205 operating parameters. This al-
lows the unit’s performance to be optimized
to meet the needs of specific applications.
The user is presented with three pushbutton
switches and three push-in/push-out rotary
level potentiometers. This makes it easy to
control the status of the main and talkback
outputs as well as adjusting the signals that
are sent to the headphone channels.
Ethernet Data and PoE
The Model 205 connects to a local area net-
work (LAN) by way of a standard 100 Mb/s
twisted-pair Ethernet interface. The physical
100BASE-TX interconnection is made by
way of a Neutrik® etherCON RJ45 connec-
tor. While compatible with standard RJ45
plugs, etherCON allows a ruggedized and
locking interconnection for harsh or high-re-
liability environments.
The Model 205’s operating power is pro-
vided by way of the Ethernet interface using
the 802.3af Power-over-Ethernet (PoE)
standard. This allows fast and efficient inter-
connection with the associated data net-
work. To support PoE power management,
the Model 205’s PoE interface enumerates
(reports) to the power sourcing equipment
(PSE) that it’s a class 2 (low power) device.
If a PoE-enabled Ethernet port can’t be
provided by the associated Ethernet switch
a low-cost PoE midspan power injector can
be utilized.
Dante Audio-over-Ethernet
Audio data is sent to and received from
the Model 205 using the Dante audio-over-
Ethernet media networking technology. As
a Dante-compliant device, the Model 205’s
three Dante transmitter (audio output) chan-
nels and four Dante receiver (audio input)
channels can be assigned (routed or “sub-
scribed”) to other devices using the Dante
Controller software application. The Dante
transmitter and receiver channels are lim-
ited to supporting four Dante flows, two in
each direction. The digital audio’s bit depth
is up to 24 with a sampling rate of 44.1
or 48 kHz. 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 205 is compatible with the
AES67 interoperability standard. In this
mode the three transmitter (output) chan-
nels will function in multicast; unicast is not
supported. In addition, the unit is compat-
ible with the Dante Domain Manager™
(DDM) software application.
Audio Quality
The Model 205’s audio performance is
completely “pro.” A low-noise, wide dy-
namic-range microphone preamplifier and
associated voltage-controlled-amplifier
(VCA) dynamics controller (compressor)
ensures that mic input audio quality is
preserved while minimizing the chance of
signal overload. The output of the micro-
phone preamp and compressor is routed
to an analog-to-digital conversion (ADC)
section that supports sampling rates of 44.1
and 48 kHz with a bit depth of up to 24.
The audio signal, now in the digital domain,
routes through a 32-bit microprocessor and
on to the Dante interface section where it is
packetized and prepared for transport over
Ethernet.
Audio input signals arrive via the four Dante
receiver channels and pass into the Model
205’s microprocessor. The supported sam-
pling rates are 44.1 and 48 kHz with a bit
depth of up to 24. Channel routing, head-
phone level control, and sidetone creation
are performed within the digital domain.
This provides flexibility, allows precise con-
Issue 3, August 2020 Model 205 User Guide
Page 8 Studio Technologies, Inc.
MODEL 205
ANNOUNCER’S CONSOLE
trol, and keeps the three level potentiom-
eters from having to directly handle analog
audio signals. The audio channels destined
for the phones outputs are sent to a high-
performance digital-to-analog converter and
then on to robust driver circuitry. High signal
levels can be provided to a variety of head-
sets, headphones, and earpieces.
Configuration Flexibility
The Model 205 can be configured to meet
the needs of specific applications and user
preferences. All configuration choices are
performed using the STcontroller personal
computer software application. There are
no mechanical switch settings or button-
press sequences required to configure how
the unit functions. Selectable parameters
include microphone preamplifier gain, P48
phantom power on/off, button operation,
remote control inputs (included tally output),
headphone output mode, sidetone opera-
tion, and overall unit operation. The gain of
the microphone preamplifier can be se-
lected from among four choices. This allows
the Model 205 to match the output sensitiv-
ity of a range of handheld and headset-as-
sociated microphones. A low-noise source
of P48 phantom power can be enabled if
required to support condenser (capacitor)
microphones.
The main and talkback pushbutton switches
can be individually configured. The main
button can be selected to operate from
among five modes while the talkback but-
tons can be selected from among three.
These choices allow the Model 205’s op-
eration to be tailored to meet the specific
needs of many applications. As an example,
for on-air sports applications the main but-
ton would typically be configured to provide
a push to mute (cough) function. The mi-
crophone signal on the Dante main output
channel and the microphone output con-
nector would remain active unless the talent
needs to momentarily disable it. The talkback
buttons would most likely be set to their push
to talk modes as their use would be intermit-
tent.
The Model 205 provides two remote control
inputs. Configuration choices allow these
to be assigned to work in parallel with the
main or talkback pushbutton switches. In
this way, activation of a remote control input
will emulate a user pressing its associated
pushbutton switch. Remote Control Input 1
can also be configured to provide a Main Out
Tally function.
The audio sources and the way in which
they are assigned to the headphone output
channels can be configured from among five
choices. These unique choices allow almost
any required headphone monitoring situa-
tion to be implemented. Whether for use in
on-air sports, an awards show broadcast, or
as a production support tool, the Model 205
should be able to achieve the desired con-
figuration.
Following the mode number is an abbrevi-
ated description of what signal or signals are
assigned to the three potentiometers (pots)
and on to the two headphone output chan-
nels. The potentiometers are labeled A, B,
and C, as can be seen in Figure 1 of this
guide. The format would equate to Mode x
– pot A/pot B/pot C where x equals the mode
number.
• Mode 1 – Ch1L/Ch2R/SidetoneLR:
Provided for broadcast applications where
two monaural channels of talent cueing
audio (“IFB”) need to be independently
sent to the left and right headphone output
channels. It would be common for program
audio with director interrupt to enter the
Model 205 by way of Dante input (receiver)
Model 205 User Guide Issue 3, August 2020
Studio Technologies, Inc. Page 9
MODEL 205
ANNOUNCER’S CONSOLE
channel 1 and be sent to the left head-
phone output. Program-only audio, enter-
ing the unit by way of Dante input channel
2, would be sent to the right headphone
output. Pots A and B are used to adjust
the level of those signals. Pot C is used
for the side-tone function where micro-
phone audio is sent to both the left and
right channels of the headphone output.
• Mode 2 – Ch1LCh2R/BalanceLR/
SidetoneLR: Intended for applications
where a stereo signal enters the Model
205 by way of Dante inputs 1 and 2 and
is routed in stereo to the left and right
channels of the headphone output. In this
mode pot A controls the overall level of
this stereo signal and pot B controls its
left/right level balance. Pot C is used by
the sidetone function.
• Mode 3 – Ch1LCh2R/Ch3LCh4R/
SidetoneLR: Allows two stereo signals to
be routed as stereo pairs to the two head-
phone output channels. In this mode pot A
adjusts the level of the stereo pair entering
the unit by way of Dante inputs 1 and 2
while pot B adjusts the level of the stereo
pair entering on Dante inputs 3 and 4. Pot
C is used by the sidetone function.
• Mode 4 – Ch1L/Ch2R/Ch3LCh4R:
Allows two monaural input signals to be
independently routed to the left and right
headphone output channels. These audio
signals would enter the Model 205 by way
of Dante input channels 1 and 2. Pots A
and B are used to control the levels of the
signals as they are sent to the left and
right headphone output channels. A stereo
input signal, entering the unit by way of
Dante inputs 3 and 4, are routed to the left
and right headphone outputs. This stereo
pair has its level controlled by pot C.
• Mode 5 – Ch1LR/Ch2LR/Ch3LCh4R:
Allows two monaural input audio chan-
nels to be sent to both the left and right
headphone output channels. Dante inputs
1 and 2 are used to bring these audio
signals into the Model 205. Pots A and B
are used to control the level of the sig-
nals as they are sent to the headphone
output channels. Pot C is used to control
the level of a stereo input signal as it is
routed to the left and right channels of the
headphone output. This stereo pair enters
the unit by way of Dante inputs 3 and 4.
The integrated sidetone function can be
configured to operate from among four
choices. This allows audio associated with
the microphone input and microphone pre-
amplifier to be returned to the headphone
output. This is important as different appli-
cations may provide a “full mix” or a “mix-
minus” talent cue signal. If a full mix cue
signal is provided then sidetone audio will
not be needed and the function can be dis-
abled. In the case where a mix-minus signal
is present, providing the user with sidetone
at the appropriate time(s) can be an impor-
tant means of confirming the signal that’s
coming from the connected microphone.
The headphone gain range configuration
helps to provide an optimized audio level to
Model 205 users. The appropriate setting
will depend on the specific audio sources
provided to the unit as well as user prefer-
ence.
Three system modes select the overall way
in which the Model 205 functions. The on-
air mode is optimized for applications where
users will be on-air talent that must maintain
strict separation between on-air and pro-
duction audio channels. Other applications
will benefit from the two available produc-
tion modes.
Issue 3, August 2020 Model 205 User Guide
Page 10 Studio Technologies, Inc.
MODEL 205
ANNOUNCER’S CONSOLE
Future Capabilities and
Firmware Updating
The Model 205 was designed so that its
capabilities and performance can be en-
hanced in the future. A USB connector,
located on the unit’s main circuit board
(underneath the unit’s cover), allows the
application firmware (embedded software)
to be updated using a USB flash drive.
The Model 205 uses the Audinate Ultimo™
integrated circuit to implement the Dante
interface. The firmware in this integrated
circuit can be updated via the Ethernet con-
nection, helping to ensure that its capabili-
ties remain up to date.
Getting Started
What’s Included
Included in the shipping carton are a Model
205 Announcer’s Console and a printed
copy of this guide. As a device that is
Power-over-Ethernet (PoE) powered, no
external power source is provided. In most
applications an Ethernet switch with PoE
capability will be utilized. If that’s not avail-
able a PoE midspan power injector can be
used.
Connections
In this section signal interconnections will
be made using the five connectors located
on the back of the Model 205’s enclosure.
An Ethernet data connection with Power-
over-Ethernet (PoE) capability will be made
using either a standard RJ45 patch cable or
an etherCON protected RJ45 plug. A mi-
crophone will be connected using a cable-
mounted 3-pin male XLR connector. A set
of headphones or an earpiece will be con-
nected by way of a ¼-inch plug. If desired,
the Model 205’s microphone-level output
may be interfaced with other equipment
using a cable terminated with a standard
3-pin female XLR connector. Special ap-
plications may utilize the two remote control
inputs that are accessible using a 3.5 mm
3-conductor jack. Remote Control Input 1
can be configured such that it provides a
tally output.
Ethernet Connection with PoE
A 100BASE-TX Ethernet connection that
supports Power-over-Ethernet (PoE) is
required for Model 205 operation. This one
connection will provide both the Ethernet
data interface and power for the Model
205’s circuitry. A 10BASE-T connection is
not sufficient and a 1000BASE-T (“GigE”)
connection is not supported unless it can
automatically “fall back” to 100BASE-TX op-
eration. The Model 205 supports Ethernet
switch power management, enumerating
itself as a PoE class 2 device.
The Ethernet connection is made by way
of a Neutrik etherCON protected RJ45
connector that is located on the back of the
Model 205’s enclosure. This allows connec-
tion by way of a cable-mounted etherCON
connector or a standard RJ45 plug. The
Model 205’s Ethernet interface supports
auto MDI/MDI-X so that a “cross-over” or
“reversing” cable will never be required.
Ethernet Connection without PoE
As previously discussed in this guide, the
Model 205 was designed such that the Eth-
ernet connection will provide both data and
Power-over-Ethernet (PoE) power. There
may be situations where the associated
Ethernet switch does not provide PoE pow-
er. In such cases an external PoE midspan
power injector can be used. If the selected
midspan power injector is 802.3af-compat-
ible it should function correctly. Midspan
Otros manuales para 205
1
Este manual sirve para los siguientes modelos
1
Tabla de contenidos
Otros manuales de Panel de control de Studio Technologies
