Studio Technologies 362 User manual

Copyright © 2016 by Studio Technologies, Inc., all rights reserved
www.studio-tech.com
50630-0916, Issue 1
User Guide
Issue 1, September 2016
This User Guide is applicable for serial numbers
M362-00151 and later with application firmware 1.1 and later
and Dante® firmware 2.1.1 (Ultimo 3.10.1.12) and later
Model 362 Listen-Only Beltpack

This page intentionally left blank.

Model 362 User Guide Issue 1, September 2016
Studio Technologies, Inc. Page 3
Table of Contents
Revision History ............................................................ 4
Introduction ................................................................... 5
Getting Started .............................................................. 7
Operation ...................................................................... 11
Technical Notes ............................................................. 13
Specifications ................................................................ 15

Issue 1, September 2016 Model 362 User Guide
Page 4 Studio Technologies, Inc.
Revision History
Issue 1, September 2016:
1. Initial release.

Model 362 User Guide Issue 1, September 2016
Studio Technologies, Inc. Page 5
Introduction
The Model 362 Listen-Only Beltpack is
a self-contained 2-channel user device
that supports headphone monitoring of
two audio channels associated with the
Dante audio-over-Ethernet media net-
working technology. Each Model 362 is
intended to be used by one user, providing
them with the form factor, reliability, and
features needed to be effective in a variety
of applications. It’s expected that most ap-
plications will use multiple Model 362 units
to support the individual audio monitoring
needs of a group of users.
The Model 362 offers the Dante connectiv-
ity, configuration flexibility, and essential
user controls in a compact, portable pack-
age. Built tough for both studio and field
deployment the unit is optimized for use
in broadcast sports and live entertainment
events, news-gathering, and streaming
broadcast applications. Leveraging the
capabilities of Dante with Studio Technolo-
gies’ expertise in creating excellent pro-
fessional audio and broadcast products,
the Model 362 allows simple deployment,
application-tailored configuration choices,
and reliable operation, while maintaining
“pro” audio quality and an intuitive user ex-
perience. With only a Power-over-Ethernet
(PoE) connection and a pair of headphones
or an earpiece, a complete broadcast talent
cue (“IFB“) or audio monitoring location
can be created.
Applications
A wide range audio-monitoring applications
can be supported, including sports and
entertainment TV and radio events, web
streaming broadcasts, corporate and
government AV installations, and post-
production facilities. The Model 362 can
be used with other high-performance
Dante-enabled products from Studio
Technologies. These include a range of
broadcast-oriented products that include
party-line intercom and IFB interfaces,
2- and 4-channel intercom beltpacks, on-air
beltpacks, and announcer’s consoles. And,
of course, the Model 362 is interoperable
with products from literally hundreds of
other manufacturers.
Setup and Operation
Setup and operation of the Model 362 is
fast and simple. An etherCON® RJ45 jack
is used to interconnect with a standard
twisted-pair Ethernet cable associated with
a port on a PoE-enabled network switch.
This connection provides both power and
bidirectional digital audio. Both ¼-inch and
3.5 mm 3-conductor (“stereo”) headphone
jacks allow connection of a wide range of
Figure 1. Model 362 Listen-Only Beltpack top and bottom views

Issue 1, September 2016 Model 362 User Guide
Page 6 Studio Technologies, Inc.
stereo headphones, single- or dual-ear
broadcast headsets, and stereo or monau-
ral earpieces or earbuds. As a final step the
Dante Controller personal computer ap-
plication will be used to select (route) two
audio sources to the Model 362’s inputs.
Two “push-in/push-out” rotary potentiom-
eters (“pots”) make it easy for the user to
set and maintain the desired level on the
2-channel headphone output. Four LEDs
provide a clear and complete indication
of the unit’s operating status. The Model
362’s enclosure is made from an aluminum
alloy which offers both ruggedness and
light weight. A stainless steel “belt clip,”
located on the back of the unit, allows
direct attachment to a user’s clothing.
Dante Audio-over-Ethernet
Audio data is sent to the Model 362 using
the Dante audio-over-Ethernet media net-
working technology. As a Dante-compliant
device, the Model 362’s two input (Dante
receiver) audio channels can be assigned
(routed) from source devices using the
Dante Controller software application. The
Model 362 is compatible with Dante digital
audio sources that have a sampling rate of
44.1, 48, 88.2, or 96 kHz and a bit depth
of up to 24. Two bi-color LEDs provide an
indication of the Dante connection status.
Audio Quality
The Model 362’s performance is complete-
ly “pro” with audio quality that’s more typi-
cal of high-end studio equipment. Audio
input signals arrive via the Dante receiver
channels and pass into the Model 362’s
processor which allows signal routing and
headphone level control to be performed
within the digital domain. This provides
flexibility, allows precise control, and
keeps the two level potentiometers from
directly handling analog audio signals.
The audio channels destined for the two
headphone output channels are sent to
a high-performance digital-to-analog
converter and then on to robust output
driver circuitry. High signal levels can
be provided to a variety of headphones,
headsets, and earpieces.
Configuration Flexibility
Several configuration choices are avail-
able, allowing the Model 362 to meet the
needs of specific applications and user
preferences. Four DIP switches, located
under the belt clip, facilitate selection
of key parameters. Two of the switches
are used to select the headphone out-
put mode and another switch selects the
headphone output minimum level. The
headphone output mode can be con-
figured from among four choices. The
level/level mode is provided for broadcast
applications where two channels of talent
cueing (“IFB”) need to be independently
sent to the left and right headphone out-
put channels. In on-air sports events it’s
typical for program audio with director
interrupt to be sent to the left headphone
output while program-only audio is sent
to the right headphone output. Indepen-
dent channel level control is provided by
the two potentiometers. The level/balance
mode is intended for applications where a
stereo signal is being routed to the Model
362’s Dante inputs. In this mode the user
is provided with one potentiometer to con-
trol the overall level of both headphone
output channels and a second potentiom-
eter to control the left/right level balance.

Model 362 User Guide Issue 1, September 2016
Studio Technologies, Inc. Page 7
The dual-channel monaural mode allows
the two Dante input audio channels to
be summed (mixed together) and sent
to both the left and right headphone out-
put channels. And lastly, a unique single-
channel monaural mode is provided for
on-air talent cue applications where a
single-channel earpiece or earbud is being
used. The two Dante audio input channels
are mixed and sent only to the left channel
of the headphone output. No audio signal
is present on the headphone output’s right
channel.
Ethernet Data and PoE
The Model 362 connects to an Ethernet
data network using a standard 100 Mb/s
twisted-pair Ethernet interface. The physi-
cal interconnection is made by way of a
Neutrik® etherCON RJ45 connector. While
compatible with standard RJ45 plugs,
etherCON allows a ruggedized and lock-
ing interconnection for harsh or high-
reliability environments. An LED displays
the status of the network connection.
The Model 362’s operating power is pro-
vided by way of the Ethernet interface us-
ing 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 362’s PoE interface
reports to the power sourcing equipment
(PSE) that it’s a class 1 (very low power)
device. If a PoE-enabled Ethernet port
can’t be provided by the associated Ether-
net switch a low-cost PoE midspan power
injector can be utilized.
Future Capabilities and
Firmware Updating
The Model 362 uses Audinate’s Ultimo™
integrated circuit to implement the Dante
interface. The firmware in this integrated
circuit can be updated via the Ethernet
connection, helping to ensure that its
capabilities remain up to date.
Getting Started
What’s Included
Included in the shipping carton are a
Model 362 Listen-Only Beltpack and a
printed copy of this guide. As a device that
is Power-over-Ethernet (PoE) powered, no
external power source is provided. Should
a PoE midspan power injector be required
it must be purchased separately.
Connections
In this section signal interconnections
will be made using the three connectors
located on the bottom of the Model 362’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 set of headphones, a head-
set, or an earpiece will be connected
by way of a ¼-inch or 3.5 mm 2- or
3-conductor plug.
Ethernet Connection with PoE
A 100BASE-TX Ethernet connection that
supports Power-over-Ethernet (PoE) is
required for Model 362 operation. This one
connection will provide both the Ethernet
data interface and power for the Model

Issue 1, September 2016 Model 362 User Guide
Page 8 Studio Technologies, Inc.
362’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
operation. The Model 362 supports Ether-
net switch power management, enumerat-
ing itself as a PoE class 1 device.
The Ethernet connection is made by way
of a Neutrik etherCON protected RJ45
connector that is located on the bottom
of the Model 362’s enclosure. This allows
connection by way of a cable-mounted
etherCON connector or a standard RJ45
plug. The Model 362’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 362 was designed such that the
Ethernet connection will provide both data
and Power-over-Ethernet (PoE) power.
There may be situations where the asso-
ciated Ethernet switch does not provide
PoE power. In such cases an external PoE
midspan power injector can be used. If
the selected midspan power injector is
802.3af-compatible it should function cor-
rectly. Midspan units are available from a
variety of sources, including many online
retailers.
Headphone Output
The Model 362 provides a 2-channel
headphone output by way of both ¼-inch
and 3.5 mm 3-conductor phone jacks.
These jacks are electrically in common
(“multed”) with each other: tip-to-tip, ring-
to-ring, sleeve-to-sleeve. Devices such as
stereo headphones or stereo (“dual-muff”)
broadcast-style headsets can be directly
connected using a 3-conductor ¼-inch or
3.5 mm plug. Following the usual conven-
tion the left channel should be terminated
on the plug’s tip lead, the right channel on
the ring lead, and common on the sleeve
lead.
It’s also possible to use a monaural
(“single-muff”) headset or broadcast-type
single earpiece. If a 3-conductor plug is
to used by the device it should be wired
such that audio positive is on the tip lead
and audio common is on sleeve lead;
the plug’s ring lead should be left uncon-
nected. But it’s also very likely that the
monaural device will be terminated on a
2-conductor (“tip and sleeve”) plug. When
this plug is inserted into one of the Model
362’s headphone jacks the Model 362’s
right headphone output channel will be
shorted to common since the output jack’s
ring lead will be shorted to its sleeve lead.
This can lead to stress on the right channel
headphone output circuitry as well as extra
PoE current draw. To prevent this condition
the headphone output mode configuration
choice (switches SW1 and SW2) should
be set for single-channel monaural. This
disables the right headphone output chan-
nel and sends the audio signals only to the
left output channel. As such a short-circuit
condition presented to the ring lead on
either of the output jacks will not result in
an issue. Refer to the Configuration section
later in this guide for details on setting the
headphone output mode.
Dante Configuration
For audio sources to pass to the Model
362 requires that several Dante-related
parameters be configured. These configu-
ration settings will be stored in non-volatile
memory within the Model 362’s circuitry.
Configuration will typically be done with the
Dante Controller software application which

Model 362 User Guide Issue 1, September 2016
Studio Technologies, Inc. Page 9
is available for download free of charge
at www.audinate.com. Versions of Dante
Controller are available to support Win-
dows® and OS X® operating systems. The
Model 362 uses the Ultimo 2-input/2-output
integrated circuit to implement the Dante
architecture although the two outputs will
not be utilized.
The two Dante receiver (Rx) channels as-
sociated with the Model 362’s audio inputs
need to be routed to the desired source
equipment’s Dante transmitter channels.
These two audio signals will be sent to the
Model 362’s 2-channel headphone output.
The Model 362 supports audio sample
rates of 44.1, 48, 88.2, and 96 kHz. The unit
is compatible with a limited set of pull-up/
pull-down values. In most cases the default
will be used and a pull-up or pull-down rate
will not be selected. The Model 362 can
serve as the clock master for a Dante net-
work but in most cases it will be configured
to “sync” to another device.
The Model 362 has a default Dante device
name of ST-M362 and a unique suffix. The
suffix identifies the specific Model 362 that
is being configured. The suffix’s actual al-
pha and/or numeric characters relate to the
MAC address of the unit’s Ultimo integrated
circuit. The two Dante receiver (Rx) chan-
nels have default names of Ch1 and Ch2.
Using Dante Controller the default device
name and channel names can be revised
as appropriate for the specific application.
Model 362 Configuration
The Model 362 provides four DIP switches
which are used to configure two operating
functions. These allow the unit to be
optimized to match the needs of specific
applications. Two of the switches allow
configuration of the headphone output
mode. This offers four unique choices
in how the incoming audio channels are
impacted by the two rotary potentiometers
and then routed to the two headphone
output channels. Another switch selects
the minimum level of the headphone output
channels. Some applications may benefit
from users never being able to fully mute
the audio signals present on the head-
phone output channels. For example, in
an on-air application it might be important
for a user to always be able to hear pro-
ducer or director instructions. Alternately, a
configuration choice allows the headphone
output channels to be fully muted when
their associated level controls are placed
in their fully clockwise position. The fourth
switch is reserved for possible future use.
Physically the switches are accessible
from the back of the Model 362’s enclosure
through a rectangular opening that is
located under the top of the belt clip.
The configuration switches are connected
to the Model 362’s logic circuitry which
responds to changes by way of the appli-
cation firmware; no audio passes directly
through the switches. Changes made to a
switch will immediately be reflected in the
unit’s operation.
Accessing the Configuration Switches
To access the four configuration switches
requires that the belt clip be rotated. Nor-
mally the belt clip is secured to the back
of the enclosure using one rivet (non-
removable) and one machine screw that
has a thread pitch of 6-32. To allow the belt
clip to rotate, remove the machine screw
using a #1 Phillips head screw driver. The
belt clip should now be able to rotate in
either direction. Save the screw so that
it can be re-installed once the desired

Issue 1, September 2016 Model 362 User Guide
Page 10 Studio Technologies, Inc.
configuration choices have been made.
Note that the threaded fastener within the
back of the Model 362’s chassis has an
internal locking mechanism (a plastic bush-
ing) that prevents the belt clip’s 6-32 ma-
chine screw from vibrating loose. As such
no additional method of thread locking,
such as a lock washer or chemical com-
pound, is necessary.
Headphone Output Mode
Switches SW1 and SW2 allow selection
from four headphone output operating
modes. Each mode is distinct and careful
selection will help optimize the Model 362’s
operation for a range of applications.
Level/Balance
The level/balance mode is provided for
stereo applications such as live music
events or radio broadcasts. In these appli-
cations it’s typical to want the user to have
a single control to simultaneously adjust
the level of both channels; a separate
control will be used to adjust the left/right
level balance.
When set for the level/balance mode
Dante input channel 1 will be routed to the
headphone left output channel and Dante
input channel 2 will be routed to the right
output channel. Potentiometer Ch 1 will
adjust the overall level on both headphone
output channels. Potentiometer Ch 2 will
adjust the level balance between the left
and right output channels.
Dual-Channel Monaural
The dual-channel monaural mode can
be useful in applications where the same
audio signals need to be provided to the
user on both the left and right headphone
output channels. In this mode Dante audio
inputs 1 and 2 are routed to both the left
and right channels of the headphone out-
put. Potentiometer Ch 1 adjusts the level
of input 1 and potentiometer Ch 2 adjusts
the level of input 2.
Single-Channel Monaural
The single-channel monaural mode is spe-
cifically provided for applications where a
2-conductor 1/4-inch or 3.5 mm plug is be-
ing used with the connected headphones,
headset, or a broadcast-style earpiece. In
this mode Dante audio inputs 1 and 2 are
mixed together and routed to the left chan-
nel of the headphone output; no audio
signal is routed to the right channel of the
headphone output. Potentiometer Ch 1
Figure 2. Headphone output mode configuration
switches
Level/Level
The level/level mode is provided for on-air
applications where two independent audio
sources need to be routed to separate
headphone output channels. Dante audio
input channel 1 will be routed to the left
headphone output channel and top-panel
potentiometer Ch 1 will adjust its level.
Dante audio input channel 2 will be routed
to the right headphone output channel
and potentiometer Ch 2 will adjust its
level.

Model 362 User Guide Issue 1, September 2016
Studio Technologies, Inc. Page 11
adjusts the level of input 1 and potentiom-
eter Ch 2 adjusts the level of input 2.
Headphone Minimum Level
Switch SW3 is used to configure the
headphone output’s minimum level. In
the –40 dB setting the minimum head-
phone output level is approximately 40 dB
below maximum; the headphone output
channels will never fully mute. This en-
sures that audio signals, when present
on the inputs, will always be present on
the headphone output channel. In most
on-air broadcast applications this is the
appropriate setting, ensuring that some
level of signal is always present.
When full mute is selected moving either
potentiometer to its fully counterclock-
wise position will cause its associated
headphone channel (or channels) to fully
mute. If a potentiometer is set to serve as
a balance control, moving Ch 2 it to either
its fully counterclockwise or fully clockwise
position will cause the associated head-
phone channel to fully mute. Selecting the
full mute mode may be appropriate for
applications where minimizing the chance
of audio “leakage” is important. This could
occur when the connected headphones
or headset are at times placed on a desk
or tabletop, leaving audio emanating from
them to travel in “free space” to an “open”
microphone.
Operation
At this point everything should be ready
and Model 362 operation can commence.
An Ethernet connection with Power-over-
Ethernet (PoE) capability should have
been made. Alternately, a midspan power
injector, in “series” with the Ethernet con-
nection, should have been put into place.
A pair of headphones, a headset, an
earbud, or an earpiece should have been
connected.
The Model 362’s Dante configuration set-
tings should have been selected using the
Dante Controller software application. In
this way the unit’s two audio input chan-
nels (Dante receiver channels) should
have been routed from transmitter chan-
nels on associated equipment. The Model
362’s configuration switches should have
been set to meet the needs of the specific
application.
Initial Operation
The Model 362 will start to function as
soon as a Power-over-Ethernet (PoE)
power source is connected. However, it
may take 20 to 30 seconds for full opera-
tion to commence. Upon initial power
up the three status LEDs, located on the
bottom panel below the RJ45 jack, will
begin to light as network and Dante con-
nections are established. The green power
LED on the top panel will light in a special
sequence to display the major and minor
version numbers of the application firm-
ware (embedded software). Once that has
completed the power LED will light green.
After the power-up sequence has com-
pleted and the Dante connection has been
established full operation will begin.
Figure 3. Headphone minimum level
configuration switch

Issue 1, September 2016 Model 362 User Guide
Page 12 Studio Technologies, Inc.
Ethernet and Dante Status
LEDs
Three status LEDs are located below the
etherCON RJ45 connector on the Model
362’s bottom panel. The LINK ACT LED
will light green whenever an active connec-
tion 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 sta-
tus of the Dante interface and associated
network. The SYS LED will light red upon
Model 362 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 362 is not synchronized with
a Dante network. It will light solid green
when the Model 362 is synchronized with
a Dante network and an external clock
source (timing reference) is being received.
It will slowly flash green when the Model
362 is serving as the clock master as part
of the Dante network. It’s possible that
up to 30 seconds may be required for the
SYNC LED to reach its final state.
How to Identify a Specific
Model 362
The Dante Controller software application
offers an identify command that can be
used to help locate a specific Model 362.
When identify is selected it will send a com-
mand to a single Model 362 unit. On that
specific unit the green power LED, located
on the unit’s top panel, will flash on and off
approximately eight times. In addition, the
SYS and SYNC status LEDs, located direct-
ly below the etherCON RJ45 connector on
the bottom panel, will slowly flash green.
After a few seconds the LED identification
patterns will cease and normal Model 362
power LED and Dante status LED opera-
tion will resume.
Headphone Listen Level
Two rotary potentiometers (“pots”), locat-
ed on the Model 362’s top panel, allow ad-
justment of the level of the two audio input
signals as they are sent to the 2-channel
headphone output. How the pots function
will depend on how the headphone output
has been configured. Four modes
are available and allow unique output
performance. In the level/level mode the
pot labeled Ch 1 will control the level of
Dante input 1 as it is being sent to the
left channel of the headphone output.
The pot labeled Ch 2 will control the level
of Dante input 2 as it is sent to the right
output. In the level/balance mode poten-
tiometer Ch 1 will adjust the level of both
the left and right headphone outputs. Po-
tentiometer Ch 2 will control the left/right
level balance of the headphone output.
When dual-channel monaural mode has
been selected potentiometer Ch 1 will
adjust the level of Dante input 1 as it is
routed to both the left and right head-
phone output channels. Potentiometer
Ch 2 will adjust the level of Dante input 2
as it is sent to both the left and right head-
phone outputs. When the Model 362 has
been configured for the single-channel
monaural mode potentiometer Ch 1
adjusts the level of Dante input 1 as it is
routed to the left channel of the head-
phone output. Potentiometer Ch 2 will
adjust the level of Dante input 2 as it is
also routed only to the left headphone
output channel. In this mode no signal
will be present on the right channel of the
headphone output.

Model 362 User Guide Issue 1, September 2016
Studio Technologies, Inc. Page 13
The two pots are “push-in/push-out” type
which allow their associated knobs to be
in their “out” position to be adjusted and
their “in” position when protection from an
unwanted change is desired. Users should
find the headphone output audio quality
to be excellent, with high maximum output
level and low distortion. Analog audio sig-
nals do not pass directly through the level
pots. The position of the pots is recognized
by the Model 362’s processor which then
adjusts the signal level within the digital
domain.
Technical Notes
IP Address Assignment
By default the Model 362’s Ethernet inter-
face will attempt to automatically obtain an
IP address and associated settings using
DHCP (Dynamic Host Configuration Pro-
tocol). If a DHCP server is not detected an
IP address will automatically be assigned
using the link-local protocol. This proto-
col is known in the Microsoft® world as
Automatic Private IP Addressing (APIPA).
It is also sometimes referred to as auto-IP
(PIPPA). Link-local will randomly assign
a unique IP address in the IPv4 range of
169.254.0.1 to 169.254.255.254. In this
way multiple Dante-enabled devices can
be connected together and automatically
function, whether or not a DHCP server is
active on the LAN. Even two Dante-enabled
devices that are directly inter-connected us-
ing an RJ45 patch cord will, in most cases,
correctly acquire IP addresses and be able
to communicate with each other.
An exception does arise when trying to
directly interconnect two Dante-enabled
devices that each use the Ultimo integrated
circuit to implement Dante. The Model 362
uses the Ultimo “chip” and, as such, a di-
rect one-to-one interconnection to another
Ultimo-based product is not supported.
An Ethernet switch linking the two units is
required to successfully interconnect two
Ultimo-based devices. The technical rea-
son that a switch is required relates to the
need for a slight latency (delay) in the data
flow; an Ethernet switch will provide this.
Using the Dante Controller software ap-
plication the Model 362’s IP address and
related network parameters can be set for
a fixed (static) configuration. While this is a
more involved process than simply letting
DHCP or link-local “do their thing,” if fixed
addressing is necessary then this capabil-
ity is available. But in this case it’s highly
recommended that every unit be physi-
cally marked, e.g., directly labeled using a
permanent marker or “console tape,” with
its specific static IP address. If knowledge
of a Model 362’s IP address has been
misplaced there is no reset button or
other method to easily restore the unit
to a default IP setting.
In the unfortunate event that a device’s IP
address is “lost,” the Address Resolution
Protocol (ARP) networking command can
be used to “probe” devices on a network
for this information. For example, in Win-
dows OS the arp –a command can be
used to display a list of LAN information
that includes MAC addresses and cor-
responding IP addresses. The simplest
means of identifying an unknown IP ad-
dress is to create a “mini” LAN with a
small PoE-enabled Ethernet switch con-
necting a personal computer to the Model
362. Then by using the appropriate ARP
command the required “clues” can be
obtained.

Issue 1, September 2016 Model 362 User Guide
Page 14 Studio Technologies, Inc.
Optimizing Network
Performance
For best Dante audio-over-Ethernet perfor-
mance a network that supports VoIP QoS
capability is recommended. This can typi-
cally be implemented on virtually all con-
temporary managed Ethernet switches.
There are even specialized switches that
are optimized for entertainment-associated
applications. Refer to the Audinate website
(www.audinate.com) for details on optimiz-
ing networks for Dante applications.
Application Firmware Version
Display
As part of the Model 362’s power-up
sequence the unit’s application firmware
(embedded software) version number will
automatically be displayed. This is useful
when working with factory personnel on
application support and troubleshooting.
Upon application of PoE power the Model
362’s green power LED, located on the
unit’s top panel, will light in a simple
“code” to indicate the version number. It
will first “flash” the major version number,
briefly pause, then flash the minor version
number. Once the version number has dis-
played a slight pause will take place and
then the power LED will light sold green.
As an example of what would be a typical
firmware display, if the green power LED
“flashes” once, turns off momentarily, then
again “flashes” once it would indicate that
application firmware version 1.1 is present
in the Model 362.
Updating the Application
Firmware
The Model 362 uses an NXP® Kinetis®-
series microcontroller (MCU or processor)
integrated circuit to run its application firm-
ware (embedded software). The firmware
is loaded into and stored in the MCU’s non-
volatile memory by way of a stand-alone
hardware programmer unit that interfaces
with a miniature header connector located
on the unit’s motherboard. This firmware
programming is done at the factory at the
time of manufacture using a Cyclone Uni-
versal, Cyclone Universal FX, or other com-
patible stand-alone programmer unit from
P&E Micro (www.pemicro.com). There is no
provision for easily field-updating the Model
362’s application firmware. Unlike some
of the other Studio Technologies’ Dante-
enabled products, the Model 362 does not
have a USB interface for firmware updating.
This capability was deemed unnecessary
and impractical due, in part, to the Model
362’s simple, well-defined functionality and
compact size.
It’s possible that updated versions of the
Model 362’s application firmware will be
released. This could be due to software
bug fixes or feature improvements. It’s ex-
pected that in most cases Model 362 units
would be returned to the factory should this
firmware need to be loaded. This would be
true unless a user, reseller, or distributor
has access to an appropriate stand-alone
programmer unit. For reference the Studio
Technologies’ website will make available
a listing of the latest version of the Model
362’s application firmware along with a
text description file. Contact the factory
for additional details.

Model 362 User Guide Issue 1, September 2016
Studio Technologies, Inc. Page 15
Ultimo Firmware Update
As previously discussed in this guide,
the Model 362 implements Dante connec-
tivity using the 2-channel Ultimo integrated
circuit from Audinate. The Dante Controller
software application can be used to
determine the version of the firmware
(embedded software) residing in the Ul-
timo “chip.” This firmware can be updated
by way of the Model 362’s Ethernet con-
nection. The latest Dante firmware file will
be available on the Studio Technologies
website. The Dante Firmware Update
Manager (FUM) application is used to
install the firmware. This program is also
available for download on the Studio
Technologies website.
Specifications
Power Source:
Power-over-Ethernet (PoE): class 1 (very low
power, ≤3.84 watts) per IEEE® 802.3af
Network Audio Technology:
Type: Dante audio-over-Ethernet
Bit Depth: up to 24
Sample Rate: 44.1, 48, 88.2 and 96 kHz
Number of Receiver (Input) Channels: 2
Dante Audio Flows: 2 receiver
Network Interface:
Type: twisted-pair Ethernet, Power-over-Ethernet
(PoE) supported
Data Rate: 100 Mb/s (10 Mb/s and 1000 Mb/s
“GigE” Ethernet not supported)
Headphone Output:
Type: Dual-channel
Compatibility: intended for connection to mono
or stereo headsets or earpieces with nominal
impedance of 50 ohms or greater
Maximum Output Voltage: 3.8 Vrms, 1 kHz,
150 ohm load
Frequency Response: 20 Hz to 20 kHz, –2 dB
Distortion (THD+N): <0.002%
Dynamic Range: >100 dB
Connectors:
Headphone Output: ¼-inch and 3.5 mm
3-conductor jacks
Ethernet: Neutrik etherCON RJ45
Dimensions (Overall):
3.1 inches wide (7.9 cm)
1.6 inches high (4.0 cm)
4.0 inches deep (10.2 cm)
Mounting: intended for portable applications;
contains integral belt clip
Weight: 0.5 pounds (0.2 kg)
Specifications and information contained in this
User Guide subject to change without notice.