Manual

Model 209 User Guide Issue Preliminary 1, July 2021
Studio Technologies, Inc. Page 7
MODEL 209
TALENT CONSOLE
flexibility, allows precise control, and keeps the level
control from having to directly handle analog audio
signals. The two audio channels destined for the
headphone outputs are sent to a high-performance
digital-to-analog (DAC) integrated circuit and then
on to robust driver circuitry. High signal levels can
be provided to a variety of headsets, headphones,
and earpieces.
Configuration Flexibility
The Model 209 can be configured to meet the
needs of specific applications and user preferences.
All configuration choices are performed using the
STcontroller personal computer software applica-
tion which is available free of charge on the Studio
Technologies website. There are no mechanical
switch settings or button-press sequences required
to configure how the unit functions. Selectable param-
eters include P48 phantom power on/off, microphone
preamplifier gain, headphone and sidetone opera-
tion, talkback button operation, level display, remote
control inputs, and tally outputs.
Microphone Input and Audio
Outputs
The gain of the microphone preamplifier can be
selected over a range of 20 to 65 dB in single dB
steps. This allows the Model 209 to match the output
sensitivity of a range of standalone and headset-
associated microphones. A low-noise source of P48
phantom power can be enabled, if required, to sup-
port a variety of condenser microphones.
The talkback pushbutton switch, located on the Model
209’s front panel, can be configured from among five
operating modes. These choices allow the Model
209’s audio output operation to be tailored to meet
the specific needs of the application. As an example,
for a podcast application the pushbutton would typi
-
cally be configured to provide a push to mute (cough)
function. This would ensure that the microphone
signal would remain active unless the talent needs
to momentarily disable it.
Headphone Output
The headphone output signal routing can be config-
ured from among three choices. The dual-channel
stereo mode is provided for applications where two
channels of talent cueing need to be independently
sent to the left and right headphone output channels.
The dual-channel mono mode allows the two Dante
receiver (input) audio channels to be summed (mixed
together) and sent to both the left and right head
-
phone output channels. Lastly, a unique single-chan-
nel mono mode is provided for applications where
a single-channel headphone, earpiece, or earbud
is being used. The two Dante audio receiver (input)
channels are mixed together and sent only to the left
channel of the headphone output. No audio signal is
present on the headphone output’s right channel.
The integrated sidetone function can be configured to
meet specific user needs. Sidetone allows audio as
-
sociated with the microphone input and microphone
preamplifier to be returned to the headphone output.
This is important as different applications may provide
“full mix” or a “mix-minus” talent cue signals. If a full
mix cue signal is provided then sidetone audio will not
be needed and the function can be disabled. In the
case, where a mix-minus signal is present, providing
the user with sidetone can be an important means
of confirming the signal that’s coming from the con-
nected microphone. The level of the sidetone signal
can either be fixed or allowed to be adjusted using
the front-panel control.
Remote Control Inputs and Tally
Outputs
The two remote control inputs can be configured to
activate a number of functions. They can be assigned
to perform the same action as the talkback pushbut-
ton switch. This allows control of the audio signal as it
is sent to the two Dante transmitter (output) channels.
The remote control inputs can also be configured to
control the tally outputs.
Unique to the Model 209 are the two tally outputs.
These 12 volts DC, 100 milliamperes maximum out
-
puts are designed to “drive” arrays of LED status indi-
cators, such as are often associated with microphone
boom mounting arms. Each output can function
independently, providing separate DC outputs. They
can also be configured to provide a single differential
output. In this way, a tally status change will result
in the tally output current changing direction. This
allows support for some very useful implementations.
For example, without the need for extra circuitry or
an additional interface, the Model 209 can directly
control the status LED indicator assembly associ
-