Attero Tech unDIO2x2 User manual

 Attero Tech, LLC
1315 Directors Row, Suite 107, Ft Wayne, IN 6808
Phone [phone] • Fax [phone]
www.atterotech.com
61 -00013-05
unDIO2x2
2-in/2-out Dante Interface
User Manual
Date 9/23/2015
Revision 05

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IMPORTANT SA ETY INSTRUCTIONS
The symbols below are internationally accepted symbols that warn of potential hazards with electrical products.
This symbol, wherever it appears, alerts you to the presence of un-insulated dangerous voltage inside the
enclosure -- voltage that may be sufficient to constitute a risk of shock.
This symbol, wherever it appears, alerts you to important operating and maintenance instructions in the
accompanying literature. Please read the manual.
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including
amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades
with one wider than the other. A grounding type plug has two blades and third grounding prong. The wider
blade or the third prong is provided for your safety. If the provided plug does not fit into your outlet, consult
an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and
the point where they exit from the apparatus.
11. Only use attachments/accessories specified by Attero Tech
12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the
apparatus.
13. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
1 . Unplug this apparatus during lightning storms or when unused for long periods of time.
15. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged
in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into
the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been
dropped.
16. This apparatus shall be connected to a mains socket outlet with a protective earthing connection.
17. When permanently connected, on all-pole mains switch with a contact separation of at least 3mm in each pole
shall be incorporated in the electrical installation of the building.
18. If rack mounting, provide adequate ventilation. Equipment may be located above or below this apparatus but
some equipment (like large power amplifiers) may cause an unacceptable amount of hum or may generate too
much heat and degrade the performance of this apparatus,
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE.

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Note: This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC Rules and EN55022. These limits are
designed to provide reasonable
protection against harmful interference when the
equipment is operated
in a commercial environment. This equipment generates, uses,
and can radiate radio frequency energy and, if not installed and used in accordance with
the instruction manual, may cause harmful interference
to radio communications.
Operation of this equipment in a residential
area is likely to cause harmful interference,
in which case the user will be required to correct the interference at their own expense.

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Contents
1 – Overview..................................................................................................................................................................................................................... 4
1.1 – What’s in the Box .....................................................................................................................................................
1.2 – Optional Extras .........................................................................................................................................................
2 – Device Installation ................................................................................................................................................................................................. 5
2.1 – Mounting .................................................................................................................................................................. 6
2.2 – Hardware Connections ............................................................................................................................................. 7
2.2.1 – Input from an Unbalanced Source ................................................................................................................... 7
2.2.2 – Input from a Balanced Source .......................................................................................................................... 7
2.2.3 – Output to a Balanced Destination .................................................................................................................... 8
2.2. – Output to an Unbalanced Destination ............................................................................................................. 8
3 – Device Configuration ........................................................................................................................................................................................... 9
3.1 – IP Address Setup ...................................................................................................................................................... 9
3.2 – Software Installation ................................................................................................................................................. 9
3.3 – Selecting a Network Adapter .................................................................................................................................. 11
3. – Connecting to a Device .......................................................................................................................................... 11
3.5 – Device Identification ............................................................................................................................................... 12
3.6 – Device Controls ...................................................................................................................................................... 12
3.7 – Saving and Loading Settings .................................................................................................................................. 12
3.7.1 – Internal Presets .............................................................................................................................................. 12
3.7.2 – Preset Files ..................................................................................................................................................... 13
4 – 3rd Party Control ................................................................................................................................................................................................. 14
.1 – Command Interface Type ....................................................................................................................................... 1
.2 – Using the Command interface ............................................................................................................................... 1
5 – ARCHITECTS & ENGINEERS SPECI ICATION ........................................................................................................................................... 15
5.1 – Device Specifications .............................................................................................................................................. 15
APPENDIX A - Reference Documents ................................................................................................................................................................A-1

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1 – Overview
The unDIO2x2 is a 2-in/2-out audio interface utilizing Audinate’s Dante protocol. It's ideal for adding 2 channels of
Dante audio I/O in a small, unobtrusive form factor. The two inputs use 3-pin depluggable connectors for balanced or
unbalanced I/O connectivity and support either mic or line level signals. Each input also features a 2 V phantom power
option. The two outputs also use 3-pin depluggable connectors and each provides a balanced line level output. Each
output also has an optional +10dB analog boost.
Connection to the Dante network is provided by a single Ethernet RJ 5 connector on the back of the unit.
The unDIO2x2 can be powered by a 12V DC wall wart (ordered separately) but it also supports the use of PoE instead.
This allows the unDIO2x2 to be powered over the network cable from a suitable PoE source (IEEE802.3af). The PoE
power option is particularly useful if the unDIO2x2 is mounted in a remote location where access to a mains outlet is
limited or indeed, non existent.
The unit comes in a small form factor with integrated mounting bracket allowing it to be mounted discretely in small
spaces (such as under desks) close to the sources or sinks thus reducing the amount of analog cabling that may be
required.
igure 1 - unDIO2x2 front and back
Audinate’s Dante Controller or other 3rd party manufacturer's Dante routing software can be used to control the audio
routing configuration of the device while the Attero Tech unIFY Control Panel application can be used to configure the
device-specific features.
The unDIO2x2 also supports control by third party systems allowing external configuration of its settings such as
phantom power and input gain in real time. Further information on 3
rd
party control can be found later in this
document in section .
1.1 – What’s in the Box
The unDIO2x2 comes supplied with the following
ounDIO2x2 device
1.2 – Optional Extras
All of the following are available as options for the unDIO2x2 that may be ordered separately:
oA 12 V DC power supply is available if PoE power is not required or available

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2 – Device Installation
1
Power LED
2
Power Socket – Use with optional 12 V DC wall wart only
3
Dante® Ethernet interface connector and indicators
4
2 x Balanced audio inputs
5
2 x Balanced Audio outputs
*Note: The unDIO2x2 has a label on one of the mounting flanges that shows the last 6 digits of the MAC address. This
is important for initial devi e identifi ation as these digits make up part of the devi es default network name that is
shown when the devi e is dete ted by Dante Controller. The full MAC address is also given on the bottom of the unit.

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2.1 – Mounting
Installation of the unDIO2x2 is very straight forward. It is recommended that the unit be secured to a flat surface with a
screw through each mounting flange. Dimensions for mounting are show in the Figure 2 below. Use a No. 6 screw of a
type and size that is applicable to the surface to which the unDIO2x2 will be attached.
igure 2 - Mounting Information
All connections to the unDIO2x2 should be made before the power is applied.
oAttach any audio sources that will be used to the inputs. The inputs are balanced so be sure to check what
output type the source to be connected uses in order to find how to connect it correctly (see Hardware
Connections section).
oAttach the outputs to the required audio devices. The outputs are balanced so be sure to check what input
type the device to be connected requires in order to find how to connect it correctly (see Hardware
Connections section 2.2 for further details).
When powering using PoE:
oAttach the Dante I/F port to a spare PoE-enabled port on a PoE switch using a CAT-5 cable. If a midspan
injector is being used, connect a spare input port to the Dante network switch using a CAT-5 cable, and then
connect the corresponding output port to the Dante I/F of the unDIO2x2.
When powering using an optional external supply:
oAttach the Dante I/F port to a spare port on the Dante network switch using a CAT-5 cable.
oAttach the power supply to the power input jack and then power up the external supply.
If all steps are performed correctly, the power light on the front should be lit.
There may also be some activity on the unDIO2x2 Dante I/F LED indicators. With no Dante network, both LEDs will
remain off. If an active connection is made both LEDs will come on and if there is network activity, the yellow LED will
then flash.

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2.2 – Hardware Connections
The UnDIO2x2 accepts and drives either unbalanced or balanced audio devices. Refer to the following diagrams and
instructions for connecting different types of audio devices. Professional grade audio cabling is recommended to
achieve the best audio performance throughout the system.
2.2.1 – Input from an Unbalanced Source
To connect a 2-wire unbalanced source to the unDIO2x2, connect the positive output of the unbalanced source to the
positive input of the unDIO2x2. Connect both the source and unDIO2x2 input grounds together, and short the
negative input of the unDIO2x2 to ground at the input of the unDIO2x2.
igure 3 - 2-Wire Unbalanced Source Connection
To connect unbalanced sources with a 3-wire connection, short the negative conductor to the shield at the source
connection.
igure 4 - 3-Wire Unbalanced Source Connection
2.2.2 – Input from a Balanced Source
To connect balanced sources to the unDIO2x2, connect positive output to positive input, negative output to negative
input, and connect the grounds together through the cable shield.
igure 5 - Balanced Source Connection

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2.2.3 – Output to a Balanced Destination
To connect to a balanced input on a destination device, connect the positive, negative, and ground connections of both
the unDIO2x2 output to the destination input respectively.
igure 6 - Output to Balanced Destination Connection
2.2.4 – Output to an Unbalanced Destination
To connect the unDIO2x2 outputs to a 2-wire unbalanced input, connect the positive output to the destination’s
positive input and connect the grounds together through the cable shield. Leave the unDIO2x2 negative output
floating.
igure 7 – Output to Unbalanced Destination

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3 – Device Configuration
There are two parts of the device that require software to setup. First the audio routing, and second the configurable
features of the device itself.
The audio routing should be carried out using any application that supports Dante audio routing. This could be from a
3rd party manufacturer or be Audinate’s own Dante Controller. Dante Controller can be obtained from the Audinate
website (www.Audinate.com). Instructions on how to use this software and about setting up routes on a Dante network
can also be found on Audinate’s website.
*Note: When using Dante ontroller, the unDIO2x2 will be shown using a default devi e name of unDIO2x2######
where ‘######’ is the last six hara ters of the devi es MAC address.
Configuration of the unDIO2x2 specific features is carried out using the Attero Tech unIFY Control Panel application.
This application is available from the Attero Tech website (www.atterotech.com). It should be used to examine and
modify the device specific features such as mic/line gain settings, phantom power, and output boost options.
3.1 – IP Address Setup
******************************************************* IMPORTANT ****************************************************
Failure to correctly configure IP addresses will not allow an unDIO2x2 device to correctly authenticate in the unIFY
Control Panel software and while it will show up in Dante Controller, the input and output channels won’t be visible and
routing of audio to and from the unDIO2x2 will not be possible.
****************************************************************************************************************************
In order to configure an unDIO2x2 both to set up its internal parameters and also setup audio routing, the PC will need
to be able to communicate with it over the network. While all Dante devices will be discovered regardless of the IP
address setup on the PC, communication can only occur if the PC and the device have compatible IP addresses.
By default, unDIO2x2 is set to get a dynamic IP address. As with all Dante devices, if the unDIO2x2 device does not
find a DHCP server to retrieve an IP address from, it will give itself an automatic private IP address (APIPA) instead. An
APIPA is always in the range 169.25 .x.y.
To ensure communication, the PC can either be set to get a dynamic IP address, or be given a static IP address in the
range 169.25 .x.y. The PC may require a restart for the changes to take affect.
Further information on IP setup for an audio system using Dante can be found in the FAQ’s on the Audinate website
(https://www.audinate.com/resources/faqs).
3.2 – Software Installation
After downloading the application, run the .exe and the first screen to appear will be the license agreement and options
screen.

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The software will install to a default location of c:\program Files (x86)\Attero Tech\unIFY Control Panel. Clicking the
“Options” button allows the user to change the installation location if required though it’s not necessary to change it.
To select a new installation location, either type in a new path in the edit box, or click on the “Browse” button to browse
the folder tree for the desired installation location. Once complete, click the OK button to return to the previous
screen.
To continue the install, read the license agreement and check the “I agree…” check box. Doing so enables the “Install”
button. Click the now enabled “Install” button to start the installation of the files.
On Windows Vista or later if the PC has the UAC enabled, a warning pop up will now appear saying the installer is about
to make changes to your PC. This needs to be accepted for the installation to complete successfully.
The installer will show a progress screen and will now being transferring files to your PC.
Once the files are transferred, the installer will show a completion message show whether the installation was
successful or not.
If the installation was unsuccessful for any reason, the final screen will show an error message.

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Once the required software is installed, click on the unIFY Control Panel icon in the programs list under Attero Tech.
This will start the application.
igure 8 – Device Configuration Window
3.3 – Selecting a Network Adapter
In order to connect to a device the application needs to know what network adapter it should use to contact devices.
Clicking on the networked PC icon will show a list of all possible adapters.
*Note: Only network adapters that are deemed as being ompatible with Dante will be shown in the list.
3.4 – Connecting to a Device
A few seconds after selecting the adapter, the device list should start to populate with detected devices. The detected
devices are listed by their device name. Select the device to be configured from the drop down list and then click the
“Connect” button. The application will then attempt to establish a connection with the device. If successful, the status
bar will show “Connected” and the controls will become active and their values will update to show the current state of
the device.
*Note: The label below ea h set of hannel ontrols show that hannels name as displayed in Dante Controller. The
hannel name annot urrently be set from within the unIFY appli ation. To hange the hannel names, use Dante
Controller.
This connected device is now treated as the active device and any changes to the controls will be set to this device and
this device alone.

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3.5 – Device Identification
The device identification feature allows the user to see which device is physically being configured. When
the Identify feature is active, the power LED on the active device will flash. The Identify check box shows
the state of the device identify feature. If the box is checked, the feature is active on the active unit. If
the check box is clear, the identify feature is inactive. To change the state of the feature, simply click in the Identify
check box to toggle its state from off to on or on to off. The identify function will continue to operate until the function
is turned off via the user interface or the device is powered down.
*Note: The identify fun tion of Dante Controller does not ontrol the identify feature on the unDIO2x2. To identify a
devi e use the unIFY Control Panel identify fun tion instead.
3.6 – Device Controls
The unDIO2x2 inputs have two software configurable options. The mic/line gain control and the
phantom power control.
The mic/line gain control gives the user three gain choices depending on the type of signal being
provided to the input. For a line level signal, select the 0dB option. The remaining two options are
for use if a microphone is to be connected directly to the input. If using a microphone as an input
source, choose the gain value that best suits the microphones output signal.
The phantom power option is available for microphones that need it. The unDIO2x2 provides 2 V
phantom power. Check the box to turn phantom power on. Uncheck the box to turn it off.
The unDIO2x2 outputs also have a software configurable option. The analog boost control allows
the user to add +10dB gain to the output signal in the analog domain.
*Note: Any hanges to the ontrols are sent immediately to the devi e. However, they are not
stored. The settings therefore have to be stored manually (see se tion 3.7).
3.7 – Saving and Loading Settings
The unDIO2x2 device settings can be saved or loaded by clicking on the icon to bring up the preset form.
The unDIO2x2 supports 9 internal presets with one of those presets used as the power-up default. It also supports
saving settings to, and loading settings from, a file.
3.7.1 – Internal Presets
Settings in a device can be saved to an internal preset which can then be recalled at a later date. There are 9 internal
presets, one of which is the “Default” preset that is used to set device settings when the unDIO2x2 is first powered on.
Select a preset to use by using the drop down in the Device Preset section. Once a preset has been selected, the
current settings of the device can be saved to the selected preset by clicking the “Save to Device” button. Alternately,
the settings from the selected preset can be loaded and used as the current settings by clicking the “Recall from Device”
button.
*Note: Loading a preset will overwrite all the urrent settings in the devi e with settings from the sele ted preset. The
GUI will also update to show these new settings overwriting all of its settings also.

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3.7.2 – Preset iles
To allow settings to be transferred to others devices or for use as a backup, the current settings can also be saved to a
file or loaded from a file. When the loading settings from a file, both the on-screen controls and the device settings will
be modified to match the settings from the file. If the settings from the file need to be saved to a preset, then that will
need to be done manually once the settings are loaded.
To save the current settings to a file, click the “Save to File” button and then enter an appropriate filename. To load
settings from a file, click the “Load from File” button and select the appropriate file.

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4 – 3rd Party Control
The unDIO2x2 supports 3
rd
party control allowing external system to manage the unDIO2x2’s settings such as phantom
power, mic/line gain options and control of presets.
There are two control interface types available for the unDIO2x2. The first type is a Dante proprietary interface which is
typically used by devices already that have built-in support for Attero Tech devices. The second type supports a 3
rd
party UDP interface and is available to anyone to use with any device capable of sending and receiving UDP messages.
Information on the commands the unDIO2x2 supports as well as details of how to use the 3
rd
party UDP interface can be
found in the unIFY 3
rd
party Software API document, available from the registered users section of the Attero Tech
website (Go to www.atterotech.com and click on the log-in option).
4.1 – Command Interface Type
The type of command interface a specific unDIO2x2 supports is defined by the Dante firmware it has been loaded with.
There are two methods to determine which Dante firmware and thus which command interface that is:
1) Run unIFY Control Panel V1.5.1 or later and connect to a device. The interface type is shown on the status bar
at the bottom of the application window as the “Direct UDP” setting. A “No” means the device is using the
Dante Proprietary interface. A “Yes” means the device is using the 3rd party UDP interface.
2) Using Dante Controller, look at the devices “Product Version” on the “Device Info” tab. Alternately, double-click
on the device in question, select the “Status” tab and look for the “Product Version” parameter. In either case,
if the product version is V1.x.x then the device is using the Dante Proprietary interface. If it’s V2.0.0 or later,
then the device is using the 3
rd
party UDP control interface.
A device’s command interface can be changed simply by updating the device’s Dante firmware. Moreover, this can be
done in the field in almost all cases. The tools and necessary firmware files for updating a device’s command interface
can be obtained from the registered users section of the Attero Tech website (Go to www.atterotech.com and click on
the log-in option). The firmware files have an extension .DNT (otherwise known as “donut” files) and there is one for
each command interface type. The firmware file with the lower of the two version numbers supports the Dante
proprietary interface while the one with the higher version number supports the 3
rd
Party UDP interface.
*Note: While all devi es support the Dante proprietary interfa e, some of the early unDIO2x2’s may not support the 3
rd
party UDP ommand interfa e. This is due to in ompatible host pro essor firmware that the devi e may be using. Use
the unIFY Control panel to onne t to the devi e in question and, upon su essful onne tion, the “Firmware Version”
will be reported on the right hand side of the status bar at the bottom of the appli ation window. If the firmware
version reports V1.2 or later, the devi e will support the 3
rd
Party UDP interfa e, and may updated in the field. If not,
onta t Attero Te h te hni al support for further assistan e.
4.2 – Using the Command interface
In order to make use of the command interface, regardless of type, the unDIO2x2 simply needs to be configured with
an IP address that is compatible with the device doing the controlling. The control devices should then be able to
converse with the unDIO2x2 without any further configuration necessary.

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5 – ARCHITECTS & ENGINEERS SPECI ICATION
The Dante Break Out interface shall have two balanced mic/line analog inputs and two balanced line analog outputs.
Each analog input shall be capable of driving a Dante audio flow, and each analog output shall be capable of being
driven from a Dante audio flow.
Each input shall have +2 V phantom power, selectable via software on a per channel basis. Each input channel shall
have three gain levels: 0dB, +25dB and + 0dB, selectable via software on a per channel basis.
Each output channel shall have two gain levels: 0dB and +10dB, selectable via software on a per channel basis.
All parameter changes saved to the default preset will be non-volatile and self restoring in the event of an AC or PoE
power interruption.
The unit shall accept either +12V DC or IEEE802.3af standard PoE as power input. The unit shall be compliant with FCC
Part15, CE and RoHS requirements.
The unit shall be the Attero Tech unDIO2x2 I/O interface.
5.1 – Device Specifications
Dante Network:
Physical Level: Standard Ethernet
Connector: Single RJ- 5
Cable Quality: CAT-5
Transmission Speed: 100Mbps
Power Requirements +12V DC or
IEEE802.3af PoE
Power Consumption Less than 3W
Dimensions 1.06”H x 6, 5”W x
3. 5”D
Operating
Temperature: 0
O
C – 0
O
C
Compliance
FCC CFR 7 Parts 15B
ICES-003
CE (EN55022
RoHS
Audio Inputs:
Input Type: Balanced and RF filtered 3-
pin depluggable
Gain: 0dB, +25dB, + 0dB,
software selectable
Input Impedance: >1.8K ohms at any gain
setting
Maximum Input
Levels:
+12dBu @ 0dB gain
-13 dBu @ +25dB gain
-29 dBu @ + 0dB gain
Phantom Power: +2 V, software selectable
Audio Outputs:
Output Type:
Balanced line level with
automatic muting on loss
of Dante signal
Output Gain 0dB, +10dB, software
selectable
Maximum output
level: +9 dBu (0dB output gain)
Audio Performance:
Noise: <-90dBu @ 0dB gain
System THD:
<0.01% at any gain, input
signal 3dB below
maximum

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APPENDIX A - Reference Documents
The following table lists the relevant reference documents.
Document Title Location
unIFY 3
rd
Party Software API Registered users area on website
Dante Firmware Update Quick Start Registered users area on website