Operation - Studio Technologies 373A User Manual

Many applications are best served when the buttons
are configured in the Push to Talk mode. This ensures
that a channel can't accidentally be left in its talk active
mode. There are certainly valid situations when the
Latching mode or Push to Talk/Tap to Latch mode
settings will prove to be very useful.

Operation

At this point everything should be ready and Model
373A operation can commence. An Ethernet connec-
tion with Power-over-Ethernet (PoE) capability should
have been made. A monaural headset terminated with
a cable-mounted 4-pin female XLR connector may
be plugged into the Headset A connector. Alternately,
a stereo gaming or computer-type headset will be
connected to Headset B using a 3.5 mm 4-conductor
TRRS plug.
Using the Studio Technologies' STcontroller software
application, the unit's configuration should have been
selected to meet the needs of the specific applica-
tion. The Model 373A's Dante configuration settings
should have been selected using the Dante Controller
software application. In this way, the Model 373A's
Dante audio transmitter (output) and two audio Dante
receiver (input) channels should have been routed,
by way of Dante "subscriptions," to the receiver and
transmitter channels on associated Dante-enabled
equipment.
Initial Operation
The Model 373A will start to function as soon as a
Power-over-Ethernet (PoE) power source is con-
nected. However, it may take 20 to 30 seconds for
full operation to commence. Upon initial power-up
the three status LEDs, located on the bottom panel
below the etherCON RJ45 jack, will begin to light as
network and Dante connections are established. The
compressor active LED might somewhat randomly
flash for a brief period. The green and orange LEDs
that illuminate the talk pushbutton switch will light as
part of a short test sequence to indicate that the ap-
plication firmware (embedded software) has started.
The mic power LED will also light for a short interval to
indicate that it is functioning. Once the test sequence
has completed and the Dante connection has been
established full operation will begin.
Issue 2, June 2023
Page 12
Model 373A
INTERCOM BELTPACK
Ethernet and Dante Status LEDs
Three status LEDs are located below the etherCON
RJ45 jack on the Model 373A's bottom panel. The
LINK ACT LED will light green whenever an active
connection to a 100 Mb/s Ethernet network has been
established. It will flash in response to Ethernet data
packet activity. The SYS and SYNC LEDs display the
operating status of the Dante interface and associated
network. The SYS LED will light red upon Model 373A
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 373A
is not synchronized with a Dante network. It will light
solid green when the Model 373A is synchronized
with a Dante network and an external clock source
(timing reference) is being received. It will slowly flash
green when this specific Model 373A is serving as the
Leader clock for the network. It's possible that up to
30 seconds may be required for the SYNC LED to
reach its final state.
Compressor Active LED
A yellow LED indicator is located on the bottom panel
adjacent to the Headset A connector. Labeled COMP,
the LED displays the status of the microphone pre-
amplifier compressor function. It will light whenever
the input level from the microphone, along with the
configured preamplifier gain, is such that the dynamic
range of the talk signal is being controlled. It's perfect-
ly acceptable for this LED to light intermittently when-
ever a user is talking at a normal voice level into the
connected microphone. But if the COMP LED lights
solid while a user is talking at a normal voice level this
will typically indicate that the mic preamp gain setting
should be reduced. Conversely, if the COMP LED al-
most never lights when normal talking is taking place,
it's possible that changing the mic preamp gain to the
higher setting would be beneficial. Note that due to
the design of the circuitry the compressor active LED
will function whether or not the talk channel is active.
Headphone Output
Two rotary potentiometers ("pots"), located on the
Model 373A's top panel, allow individual adjustment
of the level of the two audio input signals as they are
sent to the headphone output. Depending on the con-
figuration of the unit, each audio input can be sent to
the left channel, the right channel, or both the left and
right channels of the headphone output. The pots are
Model 373A User Guide
Studio Technologies, Inc.