DEVA Broadcast DB90-TX User manual

MAINTENANCE AND OPERATION
INSTRUCTION MANUAL
Publish Date: 05-Nov-2012
DB90-TX
IPAudio Encoder

Contents
Introduction........................................................................................................................................4
General Information..........................................................................................................................5
Application......................................................................................................................................5
Product Features.............................................................................................................................6
Technical Specications ..................................................................................................................7
Block Diagram................................................................................................................................8
Safety Precautions..............................................................................................................................9
Panel Indicators and Appointments...............................................................................................10
Front View.....................................................................................................................................10
Rear View ...................................................................................................................................... 11
Connecting of DB90-TX .................................................................................................................12
Analog Audio Inputs .....................................................................................................................12
Digital Audio Input .......................................................................................................................12
LAN Port .......................................................................................................................................12
Operation..........................................................................................................................................13
Status.............................................................................................................................................15
DB90-TX Conguration ...............................................................................................................17
Applying New Settings .............................................................................................................17
Network Settings.......................................................................................................................17
WEB Server Settings.................................................................................................................18
SNMP Settings..........................................................................................................................18
Audio Settings...........................................................................................................................19
Stream Server Settings .............................................................................................................20
RTP Settings .............................................................................................................................20
Icecast Settings.........................................................................................................................20
Factory Defaults Settings .............................................................................................................21
Network Default Settings..........................................................................................................22
WEB Server Default Settings ...................................................................................................22
SNMP Default Settings.............................................................................................................22
Audio Default Settings..............................................................................................................22
Stream Server Default Settings ................................................................................................22
RTP Settings .............................................................................................................................22
Icecast Settings.........................................................................................................................22
Hardware Reset.............................................................................................................................23
Network Default Settings..........................................................................................................23
WEB Server Default Settings....................................................................................................23
Rebooting .....................................................................................................................................24
Firmware Update .........................................................................................................................25
Connecting to the Stream Server ..................................................................................................26
UPnP discovery in Local Networks................................................................................................27
UPnPActivation...............................................................................................................................28
WARRANTY TERMS AND CONDITIONS.................................................................................29
Product Registration Card..............................................................................................................30

THIS PAGE
IS INTENTIONALLY
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- 4 -
Introduction
DEVA Broadcast Ltd. was established in 1997 as a broadcasting and telecommunications
equipment importer for Bulgaria and Eastern Europe regions. Subsequently, DEVABroadcast Ltd.
hasdeveloped andproduced awiderange oflow and midpower transmitters,RDS/RBDSEncoders
and Decoders, Modulation Monitors, Remote Controls, Site monitoring and other systems for
many companies. Our high degree engineers accomplish their bright ideas through successful
engineering, marketing and management in DEVA Broadcast Ltd.’s Headquarter in Bulgaria.
During the last ten years the company products have become our partners’ best sellers. After
detailed marketing analysis, our team has decided to launch its own brand products based on the
latest technologies in the broadcasting business. The company’s main goal is to design, develop
and offer a complete line of high quality and competitive products for FM and Digital Radio,
Radio Networks, Telecommunication Operators and regulation authorities. We base our market
authority position on our good after sales support and relation with the clients.
Since 2003 DEVA Broadcast Ltd. has been ISO 9001 certied .
The contractors of DEVA Broadcast Ltd. are satised with the permanent business comfort
and to their own confession they owe it to a great extent as well as their prosperity to the loyal
partnership of our company.

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- 5 -
General Information
DB90-TX IP Audio Encoder is an integrated audio converter that converts audio signal into
a high quality compressed audio stream. The signal can be compressed by HE-AAC, MPEG-1
Layer 3 encoder. DB90-TX also supports uncompressed PCM stream in order to ensure audio
transmission without quality loss.
Compression is performed in real time, and the output signal is transmitted directly by IP-
based networks. DB90-TX can work with both analog and digital audio signal. No matter how
sophisticated, DB90-TX is located in a small and compact housing. All this allows you to quickly
and painlessly integrate existing audio systems to the Internet. Developed with the thought of
easiness of use, DB90-TX can be managed through a standard web browser, PC, PDA or other
device.
APPLICATION
• Audio broadcasting over IP-based networks.
• Point-to-PointAudio Transfer (DB90-RX IPAudio Decoder is required at the opposite site).
• Suitable for professional and consumer use.

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- 6 -
PRODUCT FEATURES
• High Quality HE-AAC (v.1 and v.2) and MPEG-1 Layer-3 Compression;
• 32 kHz, 44.1 and 48 kHz sample rates support;
• Up to 56 kbps bitrate for HE-AAC;
• Up to 320 kbps bitrate for MPEG-1 Layer-3;
• 6 LEDs and Phones output for quick diagnostics;
• IP address pronunciation at startup (through the headphones);
• Easy setup via a standard web browser;
• UPnP for easy discovery in Local Networks;
• Shoutcast/Icecast compatible TCP/IP stream;
• Status monitoring via SNMP
• Up to 10 simultaneously connected clients*;
*The actual limit depends on the speed of the link and/or other factors.

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- 7 -
TECHNICAL SPECIFICATIONS
Audio codec
Codec HE-AAC (v.1 and v.2), MPEG-1 Layer 3 or raw PCM
Sample rates 32, 44.1 and 48 kHz
Channels 1 or 2
Bitrate Up to 56 kbps (HE-AAC); Up to 320 kbps (MPEG-1); Up to
1536 kbps (PCM);
MPEG-1 Layer 3 specic
Encoding mode Mono and stereo, Joint Stereo or Dual Channel
Emphasis 50µs, CCITT J.17 or none
PCM codec
Channels 1 or 2
Bitrate Up to 3072 kbps
Analog audio input
Connector 2 x RCA, stereo
Type Unbalanced
Level +6dBu (max. +8dBu)
Sample rate 96 kHz; Build-in sample rate converter used to produce lower
sample rates
Dynamic range 102 dB
Digital audio input
Connector RCA
Type S/PDIF (IEC 60958)
Resampling Thru build-in sample rate converter
Phones audio output
Connector 1/8” (3.5mm) jack, stereo
Type Headphones
User interface
Indicators 6 LEDs on front panel
Web interface Full control and status information
Streaming server
Type Shoutcast / Icecast compatible TCP/IP stream
Clients limit Up to 10 simultaneous clients
Network
Connector RJ-45
Type Ethernet
Device discovery UPnP support
Operating conditions
Temperature 10ºC - 45ºC
Humidity < 75%, non-condensing
Power requirements
Power supply 12V DC, 1A
Size and weight
Dimension (W x H x D) 4,17” x 1,3” x 5” (106 x 33 x 128 mm)
Weight 0,44 lbs (0,2 kg)

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- 8 -
BLOCK DIAGRAM
A simplied block diagram of DB90-TX IP Audio Encoder is shown below
A/D
ANALOG
AUDIO
L
R
WEB SERVER
STREAMING SERVER
MP3 ENCODER
HE-AAC v2 ENCODER
POWER
D/A
LAN
DIGITAL
AUDIO S/PDIF
RX
PHONES
DSP
Because of the all-digital, minimalist-discrete-component nature of device circuitry, we have not
provided schematic diagrams of the DB90-TX in this Manual. As they say on the back of TV sets:
NO USER-SERVICEABLE COMPONENTS INSIDE.
REFER ALL SERVICING TO
QUALIFIED TECHNICAL PERSONNEL.

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- 9 -
Safety Precautions
IMPORTANT: Carefully read this paragraph as it contains important instructions concerning
operator safety and directions regarding the installation, operation and maintenance of the
equipment. Failure to observe the safety instructions and information given in this manual
constitutes an infringement of the safety rules and design specications provided for this piece
of equipment.DEVA Broadcast Ltd. declines all responsibility if any one of the safety rules given
herein is not observed. DEVA Broadcast Ltd. declines all responsibility if the end-user resells the
product. The equipment is to be used by people capable of operating it in a trouble-free manner
and it is assumed that they are aware of the following safety rules.
◊ Keep this manual with the utmost care and close at hand so that it can be consulted whenever
needed
◊ After unpacking the equipment, check it for condition.
◊ Avoid banging the equipment.
◊ The packing material (plastic bags, polystyrene, nails, etc.) must never be left within the reach
of the children, as these items are potential sources of danger.
◊ Do not use the equipment in places where the temperature is not within the recommended
range, as specied by the manufacturer.
◊ Before connecting the equipment, make sure the nameplate specications correspond to the
mains electricity supply (the nameplate is located on the equipment enclosure).
◊ Do not remove the sticker from the equipment as it contains important specications and the
relevant serial number.
◊ To join the equipment to the mains supply, use the power cord purchased with the equipment.
◊ The equipment must be used only for the purpose it was designed for.
◊ Abuse or misuse of the equipment is extremely dangerous for people, pets and property. The
manufacturer declines all responsibility for damage and injury resulting from improper use and
mishandling.
◊ Certain basic safety rules must be observed when using electrical equipment, in particular:
- Never touch the equipment with wet and/or damp hands or other parts of the body.
- Keep the equipment away from drops of water or sprinkling systems.
- Never use the equipment near high heat sources or explosive material.
- Do not introduce any extraneous matter into the equipment.
- Do not allow children or untrained people to use the equipment.
◊ Before cleaning or servicing the equipment outside, disconnect it from the supply and wait at
least 2 seconds before working on it, as recommended by current safety regulations.
◊ In the event of faults and/or improper operation, turn off the equipment, shut off the electrical
power and call your dealer.
◊ Do not attempt to make repairs and/or adjustments when covers/guards or circuit boards are to
be removed.
◊ Call your dealer for any repairs and be certain original spare parts are used. Failure to observe
this rule may adversely affect the safety level of your equipment.
◊ The equipment is to be connected to the mains supply and provided with adequate and efcient
earth conductors.
◊ When installing, leave a clearance of at least 1 cm around the equipment to allow air to pass
freely.

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- 10 -
Panel Indicators and Appointments
FRONT VIEW
PHONES LANPWR BUSY
L R
1
2345
6
7 8
1 - Phones Output. The following audio signals are reproduced through the headphones:
Voice Announcement of DB90-TX IPAudio Encoder’s IP address upon startup;
Audio signal from the selected input;
2 - Left Channel Level LED Indicator. This LED can be in one of the following states:
Off - the channel level is within norms;
Blinking – indication of low signal level;
Constantly lit – indication of high signal level;
3 - Right Channel Level LED Indicator. This LED can in one of the following states:
Off - the channel level is within norms;
Blinking – indication of low signal level;
Constantly lit – indication of high signal level;
4 - Connection LED Indicator. This LED can be in one of the following states:
Off - NO clients are connected to the encoder;
Blinking – at least one client is connected to the streamer;
Constantly lit – maximum allowable clients are connected to the streamer (see “Stream
Server Settings” on page 20);
5 - Power LED Indicator.
6 - LAN Port / Internet Input – standard RJ-45 port;
7 - Network Activity LED Indicator (RJ-45 built-in);
8 - Network Availability LED indicator (RJ-45 built-in);

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REAR VIEW
TCP/IP M
INI
A
UDIO
T
OOL
LEFT RIGHT S/PDIF
POWER
12V / 2A
1 2 345
1 - Left Line Analog Input – standard RCA female jack;
2 - Right Line Analog Input – standard RCA female jack;
3 - Factory Defaults Reset button
4 - S/PDIF Input – standard RCA female jack;
5 - Power Supply (12 V, 1A);

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Connecting of DB90-TX
ANALOG AUDIO INPUTS
Using a cable ending with two standard RCA jacks connect the analog signal source to the
analog audio inputs of DB90-TX.
WARNING: Do not exceed maximum input level. This may permanently damage the device.
DIGITAL AUDIO INPUT
Using a cable ending with a standard RCAjacks connect the S/PDIF signal source to the digital
audio input of DB90-TX.
NOTE:As only one input can be managed by the encoder at certain point of time, please select
the preferred signal source input – either analog or digital one. Selecting the preferred input can be
performed under CONFIGURATION menu (see “Audio Settings” on page 19)
LAN PORT
For normal operation it is necessary the encoder to be connected to a local network or Internet
by cable with RJ-45 connector.

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- 13 -
Operation
DB90-TX is controlled through the built-in web server and a standard web browser can be used
to monitor its status or make some adjustments. To connect to the device you need to know its IP
address and follow the next steps:
• Open a web browser.
• Enter the encoder’s IP address in the browser’s address eld.
• Press <ENTER>.
If you do not know the encoder’s IP address you can hear it through the headphones when you
turn on DB90-TX. The other option to nd out the IP address is using UPnP discovery in local
networks (see “UPnP discovery in Local Networks” on page 27).
The web interface consists of the following pages:
• Status
• Conguration
- Network
- IPAudio
• Factory Defaults
• Reboot
• Firmware Update
At the top of each page is located the Navigational Menu and underneath, on the left side is the
section with relevant information and adjustments. There is a kind of help section on the right side,
containing brief information about each of the elds on the left.
Hover with your mouse over any of the left side elds to bring out a eld’s description next to
the mouse pointer.

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The picture below is illustrating STATUS page opened:
NOTE: As shown on the picture below a Username and Password may be requested if the
Access Control is turned on and a page other then STATUS is selected (see “WEB Server Settings”
on page 18). Defaults values are user and pass.

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STATUS
On the picture below is shown the page with current device status:
This page contains information regarding current DB90-TX IPAudio Encoder status as follows:
• Input Signal Level;
• Network Settings;
• List of Active Connections;
Level of the input signal and the list of active connections are updated dynamically which
makes it possible to remotely monitor encoder’s operation.
Under Network Status are shown MAC address and current IP address, Network mask and
Gateway and the method in which they have been assigned:
• Static Allocation Settings
• Allocated by DHCP server
• Automatically generated

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ThelastoptionusesAutoIPtogenerateauniqueIPaddress.Thisoptionisactivatedautomatically
when the device is set to use DHCP server (see “Network Settings” on page 17), but such server is
not available.
The list ofActive Connections provides information for the currently connected clients. Shown
are the IP address and local port of each client. Link duration is visible as well.
In the upper right corner is located LIVE DATA icon. Clicking on the icon will toggle live data
ON and OFF as follows:
- live data is ON
- live data is OFF.

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DB90-TX CONFIGURATION
Applying New Settings
In order new settings to take effect, it is necessary to press the SAVE button. Please keep in
mind that some of the new settings can reset DB90-TX.
Network Settings
• DHCP – as DHCP Client is used to automatically obtain the Network Settings it can be
enabled or disabled.
• IP Address – a eld where static IP address is to be inserted in case that DHCP client is not
used. Example: 192.168.0.2.
• Netmask – a eld where Static Subnet Mask is to be inserted. This parameter is not used if
DHCP Client is enabled. Example for Netmask is: 255.255.255.0.
• Gateway – a eld where Static Gateway is to be inserted. This parameter is not used if DHCP
Client is enabled. Example for Gateway is: 192.168.0.1.
NOTE: If the encoder’s IP address is changed, it is necessary to enter the new IP address in
your browser.

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WEB Server Settings
• Port – this is the TCP port of the WEB Server. Default value is 80.
• Username – user name for the WEB Server. Default value is user.
• Password – Password for the WEB Server. Default value is pass.
NOTE: You can dene Username only, Password only or both of them. If both Username and
Password are left blank, NO security is used.
SNMP Settings
SNMP MIB File: Press the Download button to download DB90-TX SNMP MIB le.
NOTE: The MIB le may change from one rmware revision to the other. Downloading this
le from the device ensures that you have the proper MIB le.
Specify Agent ID, Agent Port, Read/Write Communities, Manager IP and Manager Port.
NOTE: Agent ID is used to identify the device among others when a SNMP notication is send.
Agent - enables/disables SNMPAgent.

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Audio Settings
• Input – select analog or digital input to be used.
• A/D Amplier Gain - Analog input gain in the range from -6 to +18 dB. Default level is 0 dB.
• Channels – select number of the input channels (1 or 2). If only one channel is selected, then
the Left one is used.
• Encoder + Sample Rate – select audio encoder and sample rate.
Available encoding formats are:
- HE-AAC v1 (AAC-LC +SBR)
- HE-AAC v2 (AAC-LC +SBR +PS)
- MPEG1 Layer 3 (MP3)
- PCM (uncompressed)
• Quality – Audio quality varies from 1 (Poor) to 6 (Excellent). Quality determines bitrate of
the encoded stream. For MP3 encoded stream bitrate is independent of other parameters.
For HE-AAC encoded stream bitrate depends on encoder version, number of channels and
sample rate (see table below):

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Quality MP3
AAC v1 AAC v2
mono stereo stereo
32
kHz 44.1/48 kHz 32 kHz 44.1/48 kHz 32 kHz 44.1/48 kHz
1 64 10 12 18 24 16 16
2 96 12 18 20 30 16 20
3 128 14 24 21 36 17 24
4 192 16 28 22 42 17 28
5 256 17 32 23 48 18 32
6 320 18 36 24 52 18 36
Please note all rates are in kbps.
NOTE: Quality does not apply to PCM stream. For PCM stream bitrate is calculated by the
following equation: (sample rate)*(Number of channels)*16, [bps].
• Stereo mode – selecting stereo mode. Supported modes are Stereo, Joint Stereo or Dual
Channels.
NOTE: This parameter applies only to MP3 stream.
• CRC - selecting whether MP3 stream to contain information on error detection.
Note: This parameter applies only to MP3 stream.
• Emphasis – selecting the emphasis to be applied. Supported values are 50μs, CCITT J.17 and
NO emphasis.
NOTE: This parameter applies only to MP3 stream.
Stream Server Settings
• Name – this is the encoder’s name displayed as name of the stream.
• Port – a eld where TCP port of the stream server must be inserted. Default value is 5000.
• Pre-buffer – initial amount of data sent to the client. Large value decreases startup delay
caused by buffering on the client side. This also introduces latency in the audio. Latency is
bitrate dependent and can be estimated by the formula:
Latency = (PreBuffer x 8) / BitRate, [sec]. Default value is 96k.
• Max connections – maximum number of simultaneous connected clients. This value can be
in the range from 1 to 10. Default value is 2.
RTP Settings
• Address – URL or IPAddress of the RTP Receiver.
• Port – UDP port of the RTP Receiver.
Icecast Settings
• Address – URL or IPAddress of the Icecast Receiver.
• Port – TCP port of the Icecast Receiver.
• Username – Username for Authentication with Icecast Receiver.
• Password – Password for Authentication with Icecast Receiver.