DEVA DB910 User manual

MAINTENANCE AND OPERATION
INSTRUCTION MANUAL
Publish Date: 25-Nov-2022
DB910
Full Duplex Compact IP Audio Codec

Contents
Introduction........................................................................................................................................ 5
Typographic conventions .................................................................................................................. 6
General Information.......................................................................................................................... 7
Product Features ................................................................................................................................ 8
Technical Specications..................................................................................................................... 9
Panel Indicators and Appointments............................................................................................... 11
Front Panel.................................................................................................................................... 11
Rear Panel..................................................................................................................................... 12
Rear Panel General Purpose Ports............................................................................................... 13
Connector Pinouts.................................................................................................................... 13
Block Diagram.................................................................................................................................. 14
Before you start ................................................................................................................................ 15
Safety Warning .............................................................................................................................. 15
Operating recommendations ......................................................................................................... 15
Unpacking and inspection............................................................................................................. 15
Mounting........................................................................................................................................... 16
Heat Dissipation............................................................................................................................ 16
Radio Frequency Interference....................................................................................................... 16
Basic Setup........................................................................................................................................ 17
Analog Audio Inputs...................................................................................................................... 17
Digital Audio Input........................................................................................................................ 17
Analog Audio Outputs ................................................................................................................... 17
Digital Audio Output..................................................................................................................... 17
LAN port........................................................................................................................................ 17
WEB Interface.................................................................................................................................. 18
Network Discovery ........................................................................................................................ 18
Access............................................................................................................................................ 18
WEB Interface Menu pages ............................................................................................................ 19
Status ............................................................................................................................................. 19
Settings .......................................................................................................................................... 21
Full-Duplex ................................................................................................................................... 22
Full-Duplex Connection ...................................................................................................... 22
Full-Duplex TX .................................................................................................................... 22
Full-Duplex RX.................................................................................................................... 22
Digital Input......................................................................................................................... 23
Analog input......................................................................................................................... 23
IP Audio......................................................................................................................................... 24
Backup........................................................................................................................................... 26
Dayparts........................................................................................................................................ 28
Output............................................................................................................................................ 29
General.......................................................................................................................................... 30
Network ......................................................................................................................................... 31
Network ............................................................................................................................... 31
E-mail ................................................................................................................................. 32
HTTP Server ....................................................................................................................... 32
FTP Server .......................................................................................................................... 32
SNMP Agent ........................................................................................................................ 32

GPIO ............................................................................................................................................. 33
RS-232 Port ......................................................................................................................... 33
GPI Function ....................................................................................................................... 33
GPO Function...................................................................................................................... 33
Other ............................................................................................................................................. 34
Firmware Update................................................................................................................. 34
Storage................................................................................................................................. 34
Factory Defaults .................................................................................................................. 34
Reboot Device...................................................................................................................... 34
System Log ................................................................................................................................... 35
Hardware Reset ............................................................................................................................. 36
Network Default Settings ......................................................................................................... 36
WEB Server Default Settings ................................................................................................... 36
APPENDIX A ................................................................................................................................... 37
How to Set a pair of DB910 to work in Full-Duplex Mode .......................................................... 37
Full-Duplex audio transmission ................................................................................................... 37
DB910 Set-up ................................................................................................................................ 37
Server DB910 set-up ..................................................................................................................... 38
Client DB910 set-up...................................................................................................................... 39
APPENDIX B ................................................................................................................................... 40
How should I congure the connection between my DEVA Device and an FTP Client? 40
1. FTP Server Settings ......................................................................................................... 40
2. IP Router and Port Translation Settings.......................................................................... 40
3. Example of FTP Client (FileZilla) Settings .................................................................... 41
WARRANTY TERMS AND CONDITIONS................................................................................. 42
Product Registration Card.............................................................................................................. 43

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Introduction
DEVA Broadcast Ltd. is an international communications and high-technology manufacturing
organization, its corporate headquarters and facility located in Burgas, Bulgaria. The company
serves the broadcast and corporate markets worldwide – from consumers and small businesses to
the largest global organizations. It is dedicated to the research, design, development and provision
of advanced products, systems and services. DEVA Broadcast launched its own brand back in
1997 and has nowadays evolved to become known as a market leader and internationally reputed
manufacturer of user-friendly, cost-eective and innovative broadcast products.
Creativity and innovation are deeply woven into DEVA Broadcast corporate culture. Through
successful engineering, marketing and management our team of dedicated professionals creates
future-oriented solutions to improve customers’ performance. You may rely that all issues
communicated to our crew would be addressed accordingly. We pride ourselves on our pre and
post-sales support and purchase services, which along with the outstanding quality of our radio
gear have won us due respect and the market authority position.
DEVA Broadcast best-of-breed solutions have become the best sellers for our partners. The
strategic partnerships which have been formed with industry leaders during all these years that
we have been operating on the broadcasting market, have proved us a reliable business partner
and a valuable asset, as our dealers worldwide would conrm. In constant pursuit of precision and
long-term satisfaction, DEVA Broadcast enhances the reputation of our partners and clients alike.
Furthermore, we have already a proven merit as a credible partner provider.
Our portfolio oers complete line of high quality and competitive products for FM and Digital
Radio, Radio Networks, Telecommunication Operators and regulation authorities. For almost
two decades of intensive software and hardware development, we have achieved a unique price-
performance and endurance of our product lines. Our company’s multitude of equipment and
services is in line with the latest technologies and key trends. The most recognizable characteristics
attributed to DEVA Broadcast products are their clear-cut, streamlined design, easiness of use and
cost-eectiveness: simplicity of forms but multiplicity of functions.
For us there is no stage when we deem that we have reached the most satisfactory level in
our work. Our engineers are in constant pursuit of new ideas and technologies to be captured in
DEVA Broadcast solutions. Simultaneously, a strict control is being exercised at each step of any
new development. Experience and hard work are our fundament but the continuous improving
process is what we never leave aside. DEVA Broadcast participates on a regular basis in all
landmark broadcasting events, not only to promote its products, but to exchange valuable know-
how and experience. We are also engaged in international large-scale projects involving radio and
audio solutions which makes us even more competitive on the global market.
All DEVA Broadcast products are developed and produced in accordance with the latest ISO
9001 quality control standards.

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Typographic conventions
The following table describes important conventions used in the manual.
Convention and Style Description Examples
Menu > Sub Menu >
Menu Command
A menu item(s) and menu
command that you need to click
in sequence
Click Settings > General
[Button] Interface Interactive buttons Press [OK] to save the changes
NOTE Important notes and
recommendations
NOTE: The notication will appear
only once
“Reference Name” on
Page XXX
References and links refer to “New Connection”
(see “Monitoring” on page 56)
Example Used when example text is cited Example for E-mail Notication:
Date: 04 Nov 2013, 07:31:11

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General Information
Inspired by DEVA continuous strive for excellence, and based on our long-term formative
experience in the eld of IP audio broadcasting tools, DEVA product portfolio is extended with yet
another strategic solution - the DB910 Full Duplex IP Audio Codec.
A full duplex solution when two tools are in use, the DB910 allows you to send and receive
audio at the same time, while guaranteeing fast and easy monitoring of the signal fed to the
transmitter. Where two-way transmission is not required, DB910 may be used as a decoder, being
fully compatible with DEVA’s already widely-known hallmark IP audio codecs.
The real time audio encoding/decoding into a high quality congurable format process is
uncompromisingly guaranteed by the powerful DSP processor. Supporting all the mandatory
compressed audio streams and lossless, uncompressed PCM stream, the DB910 can be used for
a wide range of professional audio applications: Broadcast, Internet Radio, Studio to Transmitter
Link and VoIP.
Apart from its main audio source, DB910 supports several IP audio sources and a built-in MP3
Backup Audio Player in addition. With several backup audio sources incorporated, the DB910 will
immediately switch between the sources when the audio is lost, and return to the main one when
the audio is restored, with no user intervention. The audio content for the MP3 player is recorded
on the internal SD card. The backup les can be managed remotely through the built-in FTP
Server, via standard FTP client.
Combining the super compact form of the DB90 and some of the most impressive features of
the renowned DB9000 line in a single product, the DB910 will meet the requirements of the most
demanding broadcasters. This advanced radio gear is equipped with two-way GPIOs and RS-232
serial communication that could be used for telemetry and automation. The front panel audio level
bar graphs and LED indicators of the unit allow reading the current state of the device at a glance.
Controlled through a simple and intuitive HTML5 interface and any kind of web browser, be it
your PC, smart phone or tablet, the DB910 could be managed remotely or locally.
DB910 is the ultimate all-in-one solution to maintain your competitiveness, combining essential
professional applications and key trends.

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- 8 -
Product Features
• Full duplex IP audio transmission
• Analog Audio Output and Input (4 x ¼” phone jack connectors)
• Digital Audio Output and Input (2 x ¼” phone jack connectors)
• High Quality HE-AAC (v.1 and v.2), MPEG-1 and MPEG-3 Decoding
• 32 kHz, 44.1 and 48 kHz sample rates support
• Decoding of all standard bitrates and VBR as well
• Auto backup switching in the event of an audio loss
• Build-in MP3 Player
• 6 x General Purpose Inputs
• 6 x General Purpose Outputs
• 2 x 6 LED front panel audio level bar graphs
• 2 x 6 GPIO and 4 x Status LEDs, and Phones output for quick diagnostics
• Full Control and easy setup via a standard web browser
• DHCP Client automatically assigning Network Settings
• IP address pronunciation at startup (through the headphones)
• UPnP for easy discovery in Local Networks

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Technical Specications
OPERATING MODES
Two-way Full-duplex RTP
Receiver IP Audio Client, RTP
File Player SD Card based player
AUDIO CODECS
Channels 1 or 2
Sample Rates 32 kHz, 44.1 kHz, 48 kHz
Codec MPEG-1 Layer 3; HE-AAC (v.1 and v.2); 16-bit PCM
Bitrates (Encoding) Up to 320 kbps (MPEG-1); Up to 88 kbps (HE-AAC);
Up to 1536 kbps (PCM);
Bitrates (Decoding) All standard bit rates, including VBR
AUDIO BACKUP
Source Any of the available sources; Up to 3 congurable backups
Trigger Audio Silence Detector
Threshold Adjustable, -90dBFs to 0dBFs
Trigger time Adjustable, 1s to 240s
FILE PLAYER
Storage microSD Card
Supported codecs MPEG-1 Layer 3, HE-AAC (v.1 and v.2)
Supported le types *.MP3, *.AAC, *.M4A, *.M3U
Playback modes Alphabetical ascending and descending, Shue, Playlist and
Shued playlist
Remote le management Build-in FTP server
ANALOG AUDIO INPUT
Connector 2 x 1/4” (6,3mm) phone jack;
Shared with Digital input, software selectable
Type Balanced
Impedance 600Ω or High Impedance, software selectable
Level (0 dBFS) -12dBu to +18dBu, software selectable
Frequency response ±0.5dB, 10Hz-20kHz
Distortion <0.01% THD+N
Dynamic range >100 dB
ANALOG AUDIO OUTPUT
Connector 2 x 1/4” (6,3mm) phone jack;
Shared with Digital output, Soft. select
Type Balanced
Impedance 600Ω or High Impedance, software selectable
Level (0 dBFS) -12dBu to +18dBu, Software selectable
Frequency Response ±0.5dB, 10Hz-20kHz
Distortion <0.01% THD+N
Dynamic range >100 dB

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DIGITAL AUDIO INPUT
Connector 1/4” (6,3mm) phone jack;
Shared with Left Analog input, software selectable
Type AES/EBU (IEC 60958)
Sample rate 32kHz, 44.1kHz and 48kHz
DIGITAL AUDIO OUTPUT
Connectors 1/4” (6,3mm) phone jack;
Shared with Left Analog output, software selectable
Type AES/EBU (IEC 60958)
Sample rate 48kHz
GPIO
Type 6 x GPI; 3.3V TTL logic with internal pull-up
6 x GPO; Open-collector; 20V/100mA
1 x RS-232
Connector DB-15
GPI Operating Modes Transparent two-way channel or Force Audio source trigger
GPO Operating Modes Transparent two-way channel or Source Audio loss indicator
RS-232 Operating Modes Transparent two-way channel or TCP/IP to RS-232 Redirector
RS-232 baud rate 9600 to 115200 bps
FRONT PANEL
Level Indicators 2 x 6 LED bar graphs
GPIO Indicators 2 x 6 LEDs
Status Indicators 4 LEDs
Headphones 1/8” (3.5mm) phones jack
SD Card microSD card slot up to 16GB
REMOTE CONTROL
Web interface Built-in web server with HTML5 interface
SNMP SNMP 2c
NETWORK
Connector RJ-45
Type 10/100Mbps Ethernet
Device Discovery UPnP Support
OPERATING CONDITIONS
Temperature 10°C - 45°C
Humidity < 75%, non-condensing
POWER
Voltage 12V DC, 1A
Power Consumption 10VA
Connector Power Jack 5.5mm
SIZE AND WEIGHT
Dimensions (W;H;D) 170 x 35 x 167 mm
Shipping Weight 270 x 54 x 230 mm / 0.9kg
HS Code 8517620000

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Panel Indicators and Appointments
FRONT PANEL
1. SD Card
2. PWR LED – Power LED Indicator
3. LINK LED – Connection status Indicator. This LED can be in one of the following states:
- O – NO active IP connection;
- Blinking – at least one IP connection is active;
4. MEM LED – microSD card status indicator.
5. LAN LED – Network status indicator
6. L & R LED Meters – The full-time LED meters allow quick and easy monitoring of the Left
and Right Audio channels.
7. RX/TX LEDs and button – Select L&R LED Meter source - input or output
8. Phones Output – The following audio signals are reproduced through the headphones:
- Voice Announcement of DB910 IP Audio Encoder’s IP address upon startup;
- Audio signal from the currently active audio source.

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REAR PANEL
1. Power Supply (12 V, 1A);
2. Left Line Analog or AES/EBU Digital Input – 1/4” (6,3mm) Phone jack, female;
3. Right Line Analog Input – 1/4” (6,3mm) Phone jack, female;
4. Factory Defaults Reset button;
5. Left Line Analog or AES/EBU Digital Output – 1/4” (6,3mm) Phone jack, female;
6. Right Line Analog Output – 1/4” (6,3mm) Phone jack, female;
7. GPIO & RS-232 port – male DB15 connector;
8. LAN Port – standard RJ-45 port.

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REAR PANEL GENERAL PURPOSE PORTS
Connector Pinouts
1. GPI 6
2. TXD - RS232 Tx line
3. GPI 4
4. GPI 3
5. GPI 1
6. RXD - RS232 Rx line
7. GPO 6 (open collector)
8. GPI 5
9. GND - Common Ground
10. GPI 2
11. GPO 5 (open collector)
12. GPO 4 (open collector)
13. GPO 3 (open collector)
14. GPO 2 (open collector)
15. GPO 1 (open collector)

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Block Diagram
A simplied block diagram of DB910 IP Audio Encoder is shown below:
NO USER-SERVICEABLE COMPONENTS INSIDE.
REFER ALL SERVICING TO QUALIFIED TECHNICAL PERSONNEL

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Before you start
SAFETY WARNING
• The servicing of electronic equipment should be performed only by qualied personnel;
• Before removing the covers DB910 must be switched o and the mains cable unplugged;
• When the equipment is open, the power supply capacitors should be discharged using a
suitable resistor;
• Never touch the wires or the electrical circuits;
• Use insulated tools only;
• Never touch the metal semiconductor. They might carry high voltages;
• For removing and installing electronic components, follow the recommendations for
handling MOS components.
ATTENTION: DB910 has an internal Lithium battery. Do not try to re-charge this battery!
Please contact us for detailed instructions in case the battery should be changed.
OPERATING RECOMMENDATIONS
For normal operation of DB910, we recommend following the instructions listed below.
• Install the unit in places with good air conditioning. DB910 is designed to operate within the
ambient temperature range of 10 to 50°C. The equipment rack should be ventilated in order
for the device to keep its internal temperature below the maximum ambient temperatures;
• We do not recommend installation in rooms with high humidity, dusty places or other
aggressive conditions;
• Locate the device away from abnormally high RF elds;
• Use only checked power supply cables. We strongly recommend the usage of shielded
cables;
• Connect DB910 only to reliable power supply sources. In case of unstable power supply,
please use Uninterruptible Power Supply (UPS);
• Use the device only with its top cover on to avoid electromagnetic anomalies. Otherwise,
this may cause problems with the normal functionality of the unit;
• For the normal remote operation of the unit, connect DB910 to a good quality Internet
connection;
• For the normal operation of DB910, check if the network settings past through all the
required data trac.
UNPACKING AND INSPECTION
Upon receipt, the equipment should be inspected for possible shipping damages. If such are
found or suspected, notify the carrier at once and contact DEVA Broadcast Ltd. The original
shipping carton box and packing materials should be kept for possible reuse, in case of return for
Warranty repair, for example. Shipping damages as a result of improper packing for return may
invalidate the Warranty!
IT IS VERY IMPORTANT that the “Product Registration Card” included in the Manual be
completed accurately and returned. This will assure coverage of the terms of the Warranty and it will
provide a means of trace in case of lost or stolen equipment. In addition, the user will automatically
receive SERVICE OR MODIFICATION INSTRUCTIONS from DEVA Broadcast Ltd.

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Mounting
HEAT DISSIPATION
Having very low electricity consumption, the DB910, itself generates negligible heat. The
unit is intended for operation within an ambient temperature range, extending from freezing to
120°F/50°C. But because adjacent, less ecient equipment may radiate substantial heat, be sure
that the equipment rack is adequately ventilated to keep its internal temperature below the specied
maximum ambient.
RADIO FREQUENCY INTERFERENCE
Although we have made provision for DB910, installation in the immediate proximity of
broadcast transmitters, please do practice some care using the unit near abnormally high RF elds.

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Basic Setup
ANALOG AUDIO INPUTS
Using a cable ending with two standard Phone jacks connect DB910 analog input the analog
audio outputs of your equipment.
WARNING: Do not exceed maximum input level. This may permanently damage the device.
DIGITAL AUDIO INPUT
Using a cable ending with a standard Phone jack connect DB910 AES/EBU input to the
AES/EBU audio output of your equipment.
ANALOG AUDIO OUTPUTS
Using a cable ending with two standard Phone jacks connect DB910 analog outputs to the
analog audio inputs of your equipment.
DIGITAL AUDIO OUTPUT
Using a cable ending with a standard Phone jack connect DB910 AES/EBU output to the
AES/EBU audio input of your equipment.
LAN PORT
For normal operation it is necessary the device to be connected to a local network or Internet
by cable with RJ-45 connector.

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WEB Interface
DB910 is controlled trough a build in WEB Server and a standard web browser can be used
to monitor its status or to make some adjustments. To operate the device you need to know its IP
Address. In case you are not aware of it, you can hear it through the headphones when you turn on
the the device. Alternatively, use the Network discovery feature at Local networks. Then open a
new WEB Browser and enter the device IP address in the address eld then press [Enter].
NETWORK DISCOVERY
This is a network setting that denes whether your computer can see (nd) other computers and
devices on the network and whether other computers on the network can see your computer. By
default, Windows Firewall blocks network discovery but you can enable it.
1. Open Advanced sharing settings by clicking the Start button, and then on “Control Panel”.
In the search box, type “network”, click “Network and Sharing Center”, and then, in the left
pane click “Change advanced sharing settings”;
2. Select your current network prole;
3. Click Turn on network discovery, and then click save changes.
NOTE: If you’re prompted for an administrator password or conrmation, type the password,
provide conrmation or contact your system administrator.
If you have already enabled this function on your computer DB910 will be automatically added
to the Device list section. The device will be ready for usage and no additional adjustments will be
required except user name and password.
ACCESS
DB910 provides you with a protected access to the device settings. To make the necessary
adjustments to the device, please log in as an ADMINISTRATOR. The default values being
username: admin, password: pass.

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WEB Interface Menu pages
STATUS
Upon opening the WEB interface, the main Status window will appear. The page contains
information on the device’s current status - the LED bar-graph representation of the audio sources’
audio levels. The interactive buttons placed over the LED bar-graphs allow the audio source to be
manually changed.
IMPORTANT NOTE: When the DB910 works in [Auto] mode the Backup option is working
as per the set priority in the relevant section. If the source is manually changed, or Dayparting is
activated, the Backup option will be deactivated, and only the selected audio source will be used.
Meaning that in case of audio loss, the DB910 will not switch to a backup source.
At the top of the control window is placed a constant section, containing information about the
input in use, Date/Time, Uptime and session timeout.
At the bottom of the control window is an information bar, gathering all the important connection
parameters – rmware version in use, serial number, IP Address, and etc.
Upon change of the Web Interface screens, the main status window will resize automatically
and become a constant part of each tab. Thus, allowing reading at a glance of all the mandatory
parameters.

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In case the Backup source is activated, you will be notied immediately via one of the possible
methods (E-mail, SNMP) and with a message alerting that the backup source is on-air.
If a backup source is activated, the following message will appear on the main screen:
If the mouse cursor is pointed at a label of an audio source, a balloon containing information for
the Codec, Bit rate and Sample rate will appear (as depicted above).