Manual
Model 374A User Guide Issue 3, August 2019
Studio Technologies, Inc. Page 19
MODEL 374A
INTERCOM BELTPACK
Optimizing Network
Performance
For best Dante audio-over-Ethernet
performance a network that supports VoIP
Quality-of-service (QoS) capability is rec-
ommended. This can be implemented
on virtually all contemporary managed
Ethernet switches. There are even special-
ized switches that are optimized for enter-
tainment-associated applications. Refer to
the Audinate website (www.audinate.com)
for details on optimizing networks for Dante
applications. Also, disable Energy-Efficient
Ethernet (EEE) support on all Ethernet
switch ports that are associated with Dante
devices. Some implementations of EEE
can incorrectly interpret that a connected
device is not present and prevent proper
Dante operation.
Application Firmware Version
Display
There are two ways in which the version
number of the Model 374A’s application
firmware (embedded software) can be
identified. One requires only the Model
374A unit and involves a button-press
sequence performed upon power up.
The other method utilizes the Model 374A
and the STcontroller software application.
Either method may prove to be useful
when working with factory personnel on
application support and troubleshooting.
As part of the Model 374A’s power-up
sequence the unit’s application firmware
(embedded software) version number
can be displayed. This is useful when
working with factory personnel on applica-
tion support and troubleshooting. Before
connecting the PoE-enabled Ethernet ca-
ble, press and hold the channel 4 button.
Then connect the Ethernet cable. Upon ap-
plication of PoE power the Model 374A will
go through its normal power-up sequences
followed by a display of the firmware ver
-
sion. The LED associated with the channel
1 button will “flash” to display the major
version number. Then the LED associated
with the channel 2 button will “flash” to dis-
play the minor version number. Once the
version number has been displayed button
4 can be released and normal operation
will begin. As an example of what would
be a typical application firmware display,
if the channel 1 button “flashes” once fol-
lowed by the channel 2 button “flashing”
two times this would indicate that applica-
tion firmware version 1.2 was present in
the Model 374A.
A selection in the STcontroller software
application allows the Model 374A’s ap-
plication firmware version to be identi-
fied. Connect the Model 374A unit to the
network and let it connect and start to
function. Then, after starting STcontroller,
review the list of identified devices and
select the specific Model 374A that inter-
ests you. Then select Version under the
Device tab. A page will then display that
will provide lots of useful information. This
includes the application firmware version
and well as details on the firmware present
in the Ultimo integrated circuit.
Application Firmware Update
Procedure
It’s possible that updated versions of the
application firmware (embedded software)
that is utilized by the Model 374A’s proces-
sor (microcontroller or MCU) integrated
circuit will be released to add features or
to correct issues. Refer to the Studio Tech-
nologies’ website for the latest application
firmware file. The unit has the ability to load
a revised file into the MCU’s non-volatile










