Studio Technologies 5202 User manual

Copyright © 2015 by Studio Technologies, Inc., all rights reserved
studio-tech.com
50276-0815, Issue 2
User Guide
Issue 2, August 2015
This User Guide is applicable for serial numbers
M5202-00151 and later with application rmware 1.3 and later
and Dante rmware 1.3 (Ultimo 2.2.2.5) and later
Model 5202
Dante to Phones and Line Output Interface

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Model 5202 User Guide Issue 2, August 2015
Studio Technologies, Inc. Page 3
Model 5202
Dante to Phones and Line Output Interface
Table of Contents
Revision History............................................................ 4
Introduction................................................................... 5
Getting Started ............................................................. 7
Connections.................................................................. 7
Dante Conguration...................................................... 8
Operation...................................................................... 9
Technical Notes ............................................................ 10
Specications ............................................................... 13

Issue 2, August 2015 Model 5202 User Guide
Page 4 Studio Technologies, Inc.
Model 5202
Dante to Phones and Line Output Interface
Revision History
Issue 2, August 2015:
1. Documents enhanced unit identication feature.
2. Adds improvements to IP address conguration assignment explanation.
Issue 1, August 2014:
1. Initial release.

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Model 5202
Dante to Phones and Line Output Interface
Introduction
The Model 5202 Interface is a general-
purpose audio device that supports
applications utilizing the Dante®Audio-
over-Ethernet media networking technolo-
gy. Two Dante-associated audio channels
can be assigned to the Model 5202 which
provides headphone and balanced line-level
outputs. The audio quality is such that
virtually any audio application can be sup-
ported, from simple headphone or loud-
speaker monitoring to interfacing with
high-performance on-air broadcast, stadium
AV, or corporate audio systems. Multi-step
LED meters provide conrmation of the level
of the two input audio channels. The com-
pact, lightweight design allows the Model
5202 to be used in portable or desktop situ-
ations or deployed as a permanent solution
in xed applications. Standard connectors
ensure fast, reliable deployment. The unit
requires only an Ethernet connection to
supply both the data interface as well as
Power-over-Ethernet (PoE) power.
Applications
The Model 5202 is perfect for use in con-
junction with the Dante Controller software
application. Driving a pair of headphones
or set of amplied speakers, audio ows
and associated channels can be quickly
conrmed for content as well as signal level.
For eld applications the unit can serve
as both a test tool and a general-purpose
source of analog audio outputs. With level
controls associated with both the head-
phone and line outputs interfacing with
virtually any analog audio input is a simple
matter. For permanent applications there’s
no reason why a Model 5202 can’t reside
within an equipment rack or be mounted,
using optional brackets, underneath a table
or on-air studio set. The low-power circuitry
is intended for continuous operation.
Headphone Output
A sonically-excellent 2-channel (stereo)
headphone output is provided. It is capable
of driving contemporary headphones, head-
sets, and earbuds to substantial levels at
very low distortion. A rotary control is used
to adjust the headphone output level. The
level knob is a push-in/push-out type which
helps prevent inadvertent adjustment. For
exibility the headphone output is provided
on two separate 3-conductor jacks: a 3.5
mm on the front panel and a ¼-inch on the
back. The audio quality of the headphone
output is such that it can also be used as a
2-channel unbalanced line output. The out-
put level control will make it a simple task
to optimally interface the headphone output
with inputs on personal computers, portable
audio devices, and “semi-pro” equipment.
Figure 1. Model 5202 Dante to Phones and Line Output Interface front and rear views

Issue 2, August 2015 Model 5202 User Guide
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Model 5202
Dante to Phones and Line Output Interface
Line Outputs
The Model 5202 provides a 2-channel
line-level, electronically-balanced analog
audio output by way of standard 3-pin male
XLR connectors located on the back panel.
A rotary level control allows the nominal
(average) level of the line outputs to be
adjusted. Using the push-in/push-out knob
it’s a simple matter to achieve the desired
nominal output levels which include –10,
0, or +4 dBu. And with a maximum out-
put level of +24 dBu there will always be
su󰀩cient headroom for “pro” audio per-
formance. Protection components in the
output circuitry help ensure reliability in
eld applications.
The line outputs can serve a number of
monitoring and interfacing uses. Audio
ampliers or amplied speakers can be
directly connected. The level control can be
used to adjust the speaker volume or used
as a level trim function to match the speak-
er’s input sensitivity. The line outputs can
also serve as a source for interfacing with
analog inputs on audio consoles, wireless
in-ear or IFB monitor systems, as well as
audio recording devices. The level control
will help to ensure that the nominal level
of the line outputs will match the require-
ments of the connected equipment.
Metering
Two 7-step LED meters provide a real-time
level indication of the two Dante-supplied
audio channels. Scaled in dBFS (decibels
referenced to full scale digital) the meters
o󰀨er a direct view of the signal levels as
they arrive in the digital domain. Optimal
audio performance requires transporting
signals at their proper levels — without an
accurate indication this can be di󰀩cult to
achieve.
Ethernet Data and PoE
The Model 5202 connects to a data network
using a standard 100 Mb/s twisted-pair
Ethernet interface. The physical intercon-
nection is made by way of a Neutrik®
etherCON RJ45 connector. While compat-
ible with standard RJ45 plugs, etherCON
allows a ruggedized and locking intercon-
nection for harsh or high-reliability environ-
ments. An LED displays the status of the
network connection.
The Model 5202’s operating power is pro-
vided by way of the Ethernet interface using
the Power-over-Ethernet (PoE) standard.
This allows fast and e󰀩cient interconnec-
tion with the associated data network. To
support PoE power management the Model
5202’s PoE interface reports to the power
sourcing equipment (PSE) that it’s a class 1
(very low power) device. An LED is provided
to indicate when power is being supplied
to the Model 5202. Note that no provision
has been made to allow an external power
source to be connected. However, if the
associated Ethernet switch does not provide
PoE capability a commonly-available mid-
span PoE power injector can be utilized.
Dante Audio-over-Ethernet
Audio data is sent to the Model 5202
using the Dante Audio-over-Ethernet
media networking technology. As a Dante-
compliant device, two audio channels can
be assigned to the unit using the Dante
Controller software application. A single
mouse-click is all that’s required to route
an audio signal to the Model 5202. Bit
depths of up to 24 and sample rates of
44.1, 48, 88.2, and 96 kHz are supported.
Two bi-color LEDs provide an indication of
the Dante connection status. The Model
5202 uses Audinate’s Ultimo™ integrated

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Model 5202
Dante to Phones and Line Output Interface
circuit for implementing Dante. The integrat-
ed circuit’s rmware can be updated via the
Ethernet connection, helping to ensure that
its capabilities remain up to date.
Getting Started
Included in the shipping carton are a
Model 5202 Interface 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.
Mounting Options
There is no provision for directly mounting
one or more Model 5202 units in an equip-
ment rack. However, the overall height of
the unit was carefully selected so that it
could be placed without interference on a
single space (1U) rack shelf. The Model
5202’s enclosure width allows up to four
units to be placed side-by-side on a 1U
shelf that’s mounted in a standard 19-inch
equipment rack. Hook-and-loop (“Velcro”)
tape can be used to secure the Model 5202
units to the shelf. A set of mounting brack-
ets is available to allow a Model 5202 to be
attached to the underside of a desk, table,
broadcast set, or other at surface. Contact
Studio Technologies for details.
Connections
In this section signal interconnections will
be made using the connectors located on
the front and back panel of the Model 5202.
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.
Headphones can be connected using either
the 3.5 mm or ¼-inch 3-conductor phone
jack. Line output connections are made
using two 3-pin male XLR connectors.
Ethernet Connection
A 100BASE-TX Ethernet connection that
supports Power-over-Ethernet (PoE) is re-
quired for Model 5202 operation. This one
connection will provide both the Ethernet
data interface and power for the Model
5202’s circuitry. A 10BASE-T connection is
not su󰀩cient and a 1000BASE-T (“GigE”)
connection is not supported unless it can
automatically “fall back” to 100BASE-TX
operation. For PoE switch (PSE) power
management the Model 5202 will enumerate
itself as a PoE class 1 device.
The Ethernet connection is made by way
of a Neutrik etherCON protected RJ45 con-
nector that is located on the back panel of
the Model 5202. This allows connection by
way of a cable-mounted etherCON plug or
a standard RJ45 plug. The Model 5202’s
Ethernet interface supports auto MDI/MDI-X
so that most cabling implementations will
be correctly supported.
Headphone Output
The Model 5202’s headphone output is
compatible with standard stereo head-
phones, headsets, or earbuds. Connecting
devices with a nominal impedance of 100
ohms or greater is recommended. But this
shouldn’t be an issue since essentially all
of the contemporary devices meet this
recommendation.
Devices are connected to the headphone
output by way of either a 3.5 mm 3-conduc-
tor jack located on the Model 5202’s front
panel or a ¼-inch 3-conductor phone jack
located on the Model 5202’s back panel. As

Issue 2, August 2015 Model 5202 User Guide
Page 8 Studio Technologies, Inc.
Model 5202
Dante to Phones and Line Output Interface
is standard for stereo headphones, the left
channel is connected to the jacks’ tip lead,
the right channel to the jacks’ ring lead, and
the common connection to the jacks’ sleeve.
Inside the Model 5202 the connections on
the two jacks are wired in parallel (“multed”);
the same output circuitry drives both con-
nectors. While it’s expected that typically
only one pair of headphones or earbuds will
be connected at a time, there is no reason
why two pairs can’t be connected at the
same time.
Line Outputs
The line outputs are designed for general-
purpose use which could include connect-
ing to inputs on audio consoles, amplied
speakers, audio storage devices or sys-
tems, or transmitters associated with wire-
less in-ear monitors. The audio quality is
such that using the line outputs for on-air
broadcast or streaming applications would
be appropriate. The line outputs are analog,
electronically balanced, capacitor coupled,
and will perform optimally when driving
loads of 2 k (2000) ohms or greater. The
nominal output level depends on the setting
of the rotary level control. When the control
is set to its fully clockwise position the nomi-
nal level is +4 dBU. This means that if there
is a Dante transmitter (output) channel that
has a nominal level of –20 dBFS, when it’s
routed to a Model 5202 the associated line
output will have a nominal level of +4 dBu.
The Model 5202 provides two 3-pin male
XLR connectors for interfacing with associ-
ated equipment. Pin 2 should be connected
as signal + (high), pin 3 as signal – (low),
and pin 1 as common/shield. To connect
to an unbalanced load use pin 2 as signal
+ (high) and pin 1 as low/shield. Pin 3
should be left unconnected. To clarify, for
correct unbalanced operation it is important
not to connect pin 3 to anything; do not
connect pins 1 and 3 together.
Dante
Conguration
Several Model 5202’s Dante-related pa-
rameters can be congured. These congu-
ration settings will be stored in non-volatile
memory within the Model 5202’s circuitry.
Conguration will typically be done with the
Dante Controller software application which
is available for download free of charge at
audinate.com. Versions of Dante Control-
ler are available to support Windows®and
OS X®operating systems. The Model 5202
uses the Ultimo 2-input/2-output integrated
circuit to implement the Dante architec-
ture. However only the two receiver (input)
channels are utilized. This dictates which
parameters can be congured and what
choices are available.
The two audio input channels associated
with the Model 5202’s Dante interface must
be assigned to the desired output sources.
Within Dante Controller a “subscription” is
the term used for routing a transmitter ow
(a group of output channels) to a receiver
ow (a group of input channels). The Model
5202 will support audio sample rates of
44.1, 48, 88.2, and 96 kHz with a limited
selection of pull-up/pull-down values. The
Model 5202 can serve as the clock master
for a Dante network but in most cases it will
“sync” to another device.
The Model 5202 has a default Dante device
name of ST-M5202 and a unique su󰀩x. The
su󰀩x identies the specic Model 5202 that
is being congured (it relates to the MAC
address of the Ultimo integrated circuit).

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Model 5202
Dante to Phones and Line Output Interface
The two Dante receiver channels have de-
fault names of Ch1 and Ch2. Using Dante
Controller the default device and channel
names can be revised as appropriate for
the specic application.
Operation
At this point an Ethernet connection with
Power-over-Ethernet (PoE) capability
should have been made. The unit’s Dante
conguration settings should have been
made using Dante Controller software
application. At a minimum a transmitter
source should have been routed to the
Model 5202’s two Dante receiver channels.
Headphone and line output connections
should have been made as desired. Nor-
mal operation of the Model 5202 can now
begin.
Initial Operation
The Model 5202 will immediately begin to
function after a Power-over-Ethernet (PoE)
power source is connected. However, full
operation may take up to 20 seconds to
begin. Upon initial power up the four status
LEDs located on the back panel will begin
to light. The meter LEDs on the front panel
will light in a test sequence. After the meter
LEDs complete their test sequence one
meter LED associated with channel 1 and
one meter LED associated with channel
2 will briey light to indicate the version
number of the unit’s rmware (embedded
software). (Understanding how to “read”
the application rmware number will be
discussed in detail later in this guide.)
Once that sequence has completed and
the Dante connection has been estab-
lished audio signals can be available.
Ethernet, PoE, and Dante
Status LEDs
Four status LEDs are located below the
Ethernet connector on the Model 5202’s
back panel. The PoE LED will light green
to indicate that Power-over-Ethernet (PoE)
associated with the connected Ethernet
signal is providing operating power for the
Model 5202. The LINK/ACT LED will light
green whenever an active connection to
a 100 Mb/s Ethernet network has been
established. It will ash in response to 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 5202 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 5202 is
not synchronized with a Dante network. It
will light solid green when the Model 5202
is synchronized with a Dante network and
an external clock source (timing reference)
is being received. It will slowly ash green
when the Model 5202 is part of a Dante
network and is serving as a clock master.
How to Identify a Specic
Model 5202
The Dante Controller software application
o󰀨ers an identify command that can be
used to help locate a specic Model 5202.
When identify is selected for a specic unit
its meter LEDs will light in a unique pat-
tern. In addition, the SYS and SYNC LEDs,
located directly below the etherCON con-
nector on the back panel, will slowly ash
green. After a few seconds the LED iden-
tication patterns will cease and normal

Issue 2, August 2015 Model 5202 User Guide
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Model 5202
Dante to Phones and Line Output Interface
Model 5202 level meter and Dante status
LED operation will again take place.
Level Meters
Two 7-step LED meters will display the
level of the two Dante audio receiver (input)
channels. The meter steps are calibrated
in dBFS which indicates the number of dB
below the maximum possible digital signal
level. The maximum level, 0 dBFS, is the
digital audio reference level equal to “full
scale.” Full scale refers to the maximum
level possible for a sine wave before “digi-
tal clipping.” In typical applications a signal
level of –20 dBFS would be the nominal
(normal average) value. The ve meter
steps that have a threshold of –20 dBFS
and less light with the color green. The step
that lights at –15 dBFS and greater is yel-
low in color and indicates a “hot” or above
average signal level. The top step lights
red in color when a signal level is –5 dBFS
or greater, indicating that a potentially
“clipped” (distorted due to excessive level)
signal is present.
Headphone Output
Dante input channel 1 is routed to the left
headphone output channel. This signal is
connected to the tip connection on both
the 3.5 mm and ¼-inch headphone output
jacks. Dante input channel 2 is routed to
the right headphone output channel which
is associated with the ring connection on
the output jacks. The push-in/push-out
headphone level control adjusts the level of
both the left and right channels of the head-
phone outputs. In the fully counterclockwise
position the output level is essentially o󰀨.
Care must be taken when adjusting the
headphone output level control. The output
circuitry is capable of driving headphones,
headsets, or earbuds to damaging levels.
Hearing damage is a real possibility and
caution must be exercised.
Line Outputs
Dante input channel 1 is routed to line
output channel 1. Dante input channel 2
is routed to line output channel 2. The
associated push-in/push-out rotary control
adjusts the level of both line output chan-
nels. In its fully counterclockwise position
the output level of the two channels are
essentially o󰀨. In its fully clockwise position
the output levels will be approximately
+4 dBu with a Dante input signal that has
a level of –20 dBFS.
Technical Notes
IP Address Assignment
By default the Model 5202’s Ethernet
interface will attempt to obtain an IP ad-
dress and associated settings using DHCP
(Dynamic Host Conguration Protocol).
If a DHCP server is not detected an IP
address will be assigned using the link-lo-
cal protocol. This protocol 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 assign an 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-en-
abled devices that are directly intercon-
nected using an RJ45 patch cord will
correctly acquire IP addresses and be able
to communicate and transport audio.

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Model 5202
Dante to Phones and Line Output Interface
Using the Dante Controller software ap-
plication the Model 5202’s IP address and
related network parameters can be set for
a xed (“static”) conguration. While this is
more involved than letting DHCP or link-
local “do their thing,” if xed addressing is
necessary then that capability is available.
But in this case it’s highly recommended
that each unit be physically marked, e.g.,
directly using a permanent marker or “con-
sole tape,” with its specic IP address. If
knowledge of a Model 5202’s IP address
has been misplaced there is no reset but-
ton or other method to 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 Windows
OS the arp –a command can be used to
display a list of LAN information that in-
cludes MAC addresses and corresponding
IP addresses. The simplest means of identi-
fying an unknown IP address is to create a
“mini” LAN with a personal computer con-
nected directly to the Model 5202. Then by
using the appropriate ARP command the
required “clues” can be obtained.
For best Dante audio-over-Ethernet per-
formance a network that supports VoIP
QoS capability is recommended. This can
typically be implemented on virtually all
contemporary managed Ethernet switches.
There are even specialized switches that
are optimized for entertainment-associated
applications. Refer to the Audinate website
(audinate.com) for details on optimizing
networks for Dante applications.
Updating Main Application
Firmware
The Model 5202 uses a Freescale HCS-
08-series microcontroller (MCU) integrated
circuit to run its main application rmware
(embedded software). The rmware 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 header connector located on the
unit’s motherboard. This rmware pro-
gramming is done at the factory at the time
of manufacture using a Cyclone Pro or
Cyclone Universal stand-alone program-
mer unit from P&E Micro (pemicro.com).
There is no provision for updates of the ap-
plication rmware to easily be performed in
the eld. Unlike some of the other Studio
Technologies’ Dante-enabled products, the
Model 5202 does not have a USB inter-
face for rmware updating. This is because
of the Model 5202’s simple, well-dened
functionality and commensurate limited-
resource MCU.
It’s possible that updated versions of the
Model 5202’s application rmware will be
released. This could be due to software
bug xes or feature improvements. It’s
expected that in most cases Model 5202
units will be returned to the factory should
this rmware need to be loaded. This
would be true unless a user, reseller, or
distributor has access to an appropriate
stand-alone programmer unit. For refer-
ence the Studio Technologies’ website
will make available the latest version of
the Model 5202’s application rmware le
along with a text description le. Contact
the factory for additional details.

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Model 5202
Dante to Phones and Line Output Interface
Ultimo Firmware Update
As previously discussed in this guide, the
Model 5202 implements Dante connectivity
using the 2-input/2-output Ultimo integrat-
ed circuit from Audinate. The Dante Con-
troller software application can be used
to determine the version of the rmware
(embedded software) residing in the Ultimo
“chip.” This rmware can be updated by
way of the Model 5202’s Ethernet connec-
tion. The latest Dante rmware le is avail-
able on the Studio Technologies website.
The Dante Firmware Update Manager
application is used to install the rmware.
This program is also available for down-
load on the Studio Technologies website.
Identifying the Firmware
Version Number
As previously discussed in this guide,
upon power up the meter LEDs are used
to briey display the version number of
the Model 5202’s rmware (embedded
software). This information is typically only
necessary when working with the fac-
tory on support issues. The meter LEDs
will rst go through a display sequence
followed by an approximately 1-second
period where the version number will be
indicated. The top row of seven LEDs will
display the major version number with a
range of 1 to 7. The bottom row of seven
LEDs will display the minor version number
with a range of 1 to 7. Refer to Figure 2 for
details.
Figure 2. Detail of front panel showing the LEDs that display the rmware version.
In this example, the version shown is 1.3.
Major Version Number
1 2 3 4 5 6 7
lOOOOOO
OOlOOOO
.1 .2 .3 .4 .5 .6 .7
Minor Version Number

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Model 5202
Dante to Phones and Line Output Interface
Specications
Network Audio Technology:
Type: Dante Audio-over-Ethernet
Bit Depth: up to 24
Sample Rates: 44.1, 48, 88.2, and 96 kHz
Number of Receiver (Input) Channels: 2
Dante Audio Flows: 2 receiver
Digital to Analog Equivalence: at unity gain a
Dante digital input of –20 dBFS results in an analog
output of +4 dBu
Network Interface:
Type: twisted-pair Ethernet with Power-over-
Ethernet (PoE)
Data Rate: 100 Mb/s (10 Mb/s Ethernet not
supported)
Power: Power-over-Ethernet (PoE) per IEEE
802.3af class 1 (very low power, ≤3.84 watts)
General Audio Parameters:
Frequency Response: 20 Hz to 20 kHz, ±0.5 dB,
Dante to line output
Distortion (THD+N): 0.01%, measured at 1 kHz,
+4 dBu, Dante to line output
Dynamic Range: >100 dB, A-weighted, Dante to
line output
Headphone Output:
Type: stereo, congured to drive headphones
through 100 ohm series resistors
Compatibility: intended for connection to head-
phones with impedance of 100 ohms or greater
Level: adjustable using rotary level control
Maximum Voltage: 8 Vpp, 100 ohm load
Line Outputs: 2
Type: electronically balanced, capacitor-coupled,
intended to drive balanced or unbalanced loads of
2 k ohms or greater
Source Impedance: 200 ohms
Nominal Level: adjustable using rotary level con-
trol, +4 dBu @ 100% rotation
Maximum Level: +24 dBu into 2 k ohms
Meters: 2
Function: displays level of Dante input signals
Type: 7-segment LED, modied VU ballistics
Connectors:
Ethernet: Neutrik etherCON RJ45
Headphone Output: 3.5 mm and ¼-inch
3-conductor jacks
Line Outputs: 3-pin male XLR
Dimensions (Overall):
4.2 inches wide (10.7 cm)
1.7 inches high (4.3 cm)
5.1 inches deep (13.0 cm)
Mounting Option: MBK-02 Mounting Bracket Kit
Weight: 0.8 pounds (0.35 kg)
Specications subject to change without notice.