DEVA Broadcast DB8008 User manual

MAINTENANCE AND OPERATION
INSTRUCTION MANUAL
Publish Date: 20-Jan-2023
DB8008
Digital Silence Monitor
with MP3 and IP Audio Backup Players

Contents
Introduction........................................................................................................................................ 5
Typographic conventions .................................................................................................................. 6
General Information.......................................................................................................................... 7
Product Features ................................................................................................................................ 8
Technical Specications .................................................................................................................. 9
Block Diagram .............................................................................................................................. 11
Safety Precautions............................................................................................................................ 12
Before you start ................................................................................................................................ 13
Mains Voltage Selector ................................................................................................................. 13
Power Cord .................................................................................................................................. 13
Operating Recommendations ....................................................................................................... 14
Radio Frequency Interference (RFI) ............................................................................................. 14
Unpacking and Inspection............................................................................................................... 15
Mounting .......................................................................................................................................... 15
Rack Requirement ......................................................................................................................... 15
Heat Dissipation ........................................................................................................................... 15
Panel Indicators and Connectors ................................................................................................... 16
Front Panel.................................................................................................................................... 16
Rear Panel..................................................................................................................................... 17
GPIO Connector Pinouts .............................................................................................................. 18
Electrical Characteristics of Optocouplers.............................................................................. 18
Navigation Through LCD Menu .................................................................................................... 19
The Basics ..................................................................................................................................... 19
Menu Structure.............................................................................................................................. 20
Restore Factory Defaults............................................................................................................... 28
Connecting DB8008 ........................................................................................................................ 29
Analog Audio Inputs ..................................................................................................................... 29
Digital Audio Input ....................................................................................................................... 29
LAN Port ....................................................................................................................................... 29
Operation.......................................................................................................................................... 30
Manual IP Identication ............................................................................................................... 30
Network Discovery ........................................................................................................................ 32
DB8008 WEB interface menu pages .............................................................................................. 34
Status ............................................................................................................................................. 34
Input .............................................................................................................................................. 35
Main and AUX Input ................................................................................................................ 35
IP Audio Client ......................................................................................................................... 36
Backup........................................................................................................................................... 37
Audio Loss and Audio Recovery............................................................................................... 37
Audio Monitor Mode ................................................................................................................ 37
MP3 Audio Player .................................................................................................................... 37
MP3 Files Upload via FTP ..................................................................................................... 38
Jingle Player............................................................................................................................. 38
Jingle Files Upload via FTP .................................................................................................... 38
How can a playlist le be made?.............................................................................................. 38

Output............................................................................................................................................ 39
Analog Audio.................................................................................................... 39
Digital Audio ............................................................................................................................ 39
IP Voice Announcement ............................................................................................................ 39
Dayparts........................................................................................................................................ 40
General.......................................................................................................................................... 41
Network ......................................................................................................................................... 42
Network..................................................................................................................................... 42
E-mail ....................................................................................................................................... 42
HTTP Server............................................................................................................................. 43
FTP Server................................................................................................................................ 43
SNMP Agent ............................................................................................................................. 43
Other ............................................................................................................................................. 44
Firmware Update ..................................................................................................................... 44
Storage...................................................................................................................................... 44
Factory Defaults....................................................................................................................... 44
Reboot....................................................................................................................................... 44
System Log................................................................................................................................ 45
UPnP discovery in Local Networks ................................................................................................ 46
UPnP Activation ............................................................................................................................... 47
APPENDIX A ................................................................................................................................... 48
List of DB8008 Jumper Settings for Analog Signals..................................................................... 48
DB8008 Jumpers Location............................................................................................................ 49
DB8008 Conguration with Impedance 10kΩ and 0dBu analog Input and Output Range 50
DB8008 Conguration with Impedance 600Ω and +18dBu analog Input and Output Range 51
APPENDIX B ................................................................................................................................... 52
How should I congure the connection between my DEVA Device and an FTP Client? 52
WARRANTY TERMS AND CONDITIONS................................................................................. 54
Product Registration Card.............................................................................................................. 55

THIS PAGE
IS INTENTIONALLY
LEFT BLANK

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- 5 -
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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- 6 -
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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- 7 -
General Information
DEVA’s DB8008 is a exible and reliable tool, designed by our engineers specically with
the aim of solving one of the most signicant problems in the radio industry – the one of radio
silence. DEVA’s smart and highly practical solution detects signal loss and immediately switches
the output to one of two alternative built-in backup players – MP3 or IP Audio. As an additional
advantage, it also allows for easy integration into the existing setups of a single station and large
radio networks alike.
The MP3 backup audio les and playlists can be uploaded to the device using any FTP client,
making this model not only ecient but also easy to use. The audio storage capacity of the unit is
an impressive 2GB for over 24 hours of audio playback without repetition. Moreover, the backup
sources priority is selected by users themselves.
The DB8008 features a fully DSP-based core, professional AES/EBU digital audio inputs and
outputs, and additionally allows for TCP/IP remote monitoring and control via SNMP and the WEB
Interface, which means that the device can also be used for local content or regional advertisement
spots. Another option provided by the model is the alert notications via email, SNMP or analog
opto-coupled outputs in case of signal loss.
Developed to provide users with a tool for an infallible and constant audio feed, the DB8008
is trademark DEVA device oering a simple and subtle solution to the problem of radio silence.

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- 8 -
Product Features
• Fully DSP based core
• Intelligent Silence Detector and Backup Audio Switcher
• Scheduler for disabling the Silence Detector and Forcing the Source for predened period
of time
• User selectable backup audio sources priority
• Conguration and Monitoring via SNMP, WEB, Front Panel LCD and Keyboard
• Alert Notications via E-mail, SNMP, Analog opto-coupled Outputs
• Lots of Storage for over 24 hours of non-repeating audio playback
• Always Fresh Backup Audio Tracks with Embedded FTP server
• Professional Balanced Stereo analog inputs and outputs on XLR connectors
• Professional AES/EBU Digital audio inputs and output on XLR connectors
• Consumer S/PDIF Digital audio inputs and output on Optical and Coaxial connectors
• Headphones Jack on the front panel for local monitoring of the Audio Signal
• TCP/IP Remote monitoring and control via SNMP and WEB Interface
• Variety of Audio Sources
• Multiformat IP Audio Stream (three separate sources)
• Multiformat Real-Time Transport Protocol (RTP) Stream Receiver
• Multiformat Icecast compatible Stream Receiver
• Built-in SD Card MP3 Player
• External or internal Digital clock sync
• Digital Volume Control of all Audio Sources
• Protected access to the device settings
• UPnP for easy discovery in Local Networks
• Professional 19 inches, 1U aluminum rack mount chassis
• Wide Range Internal Power Supply 100-240VAC 50-60Hz
• Easy installation and operation
• Remote Firmware Upgrade for future-proof operation

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- 9 -
TECHNICAL SPECIFICATIONS
MAIN ANALOG AUDIO INPUTS
Connectors Balanced XLR
Impedance 600Ω or high impedance
Level 0dBu or +18dBu Jumper selectable, with digital gain adjustments
Dynamic range >80dB
Digital Gain Adjust -10dB to +10dB
MAIN DIGITAL AUDIO INPUTS
Connectors Balanced XLR, Coaxial, Optical
Sample Rates 32, 44.1, 48 and 96kHz
Digital Gain Adjust -10db to +10dB
AUX ANALOG AUDIO INPUTS
Connectors Balanced XLR
Impedance 600Ω or high impedance
Level 0dBu or +18dBu Jumper selectable, with digital gain adjustments
Dynamic range >80dB
Digital Gain Adjust -10dB to +10dB
AUX DIGITAL AUDIO INPUTS
Connectors Balanced XLR, Coaxial, Optical
Sample Rates 32, 44.1, 48 and 96kHz
Digital Gain Adjust -10dB to +10dB
RTP RECEIVER
Stream Formats MP3, AAC
Bit Rates All standard bit rates, including VBR
ICECAST PLAYER
Stream Formats PCM (32, 44.1, 48kHz), MPEG1 Layer 3 (MP3), HE-AAC (v.1 and v.2)
Bit Rates All standard bit rates, including VBR
IP AUDIO SOURCE
Number of Streams one main and two alternative streams with auto-switch on failure
Stream Clients shoutcast, icecast
Stream Formats PCM, MPEG1 Layer 3 (MP3), HE-AAC (v.1 and v.2); all at 32, 44.1,
48kHz only
Bit Rates All standard bit rates, including VBR
Number of Channels Mono, Stereo
Buer Size Adjust 5Kb to 64Kb
Digital Gain Adjust -10dB to +10dB
BUILT-IN MP3 PLAYER
Storage Capacity 2Gb on SD Card
Supported encoders HE-AAC (v.1 and v.2), MPEG-1 Layer 3
MP3 bit rates 32-320 kbps and VBR
Sample rates All sampling frequencies specied by MPEG1 L1/L2/L3 (32, 44.1 and
48kHz)
Supported le types *.MP3, *.AAC, *.M4A, *.M3U

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- 10 -
Playback modes Alphabetical ascending and descending, Shue, Playlist and Shued
playlist
Remote le management Build-in FTP server
Digital Gain Adjust -10dB to +10dB
ANALOG AUDIO OUTPUT
Connector Balanced XLR
Frequency response ±0.5dB, 5Hz-20kHz
Distortion <0.01% THD+N
Level 0dBu or +18dBu Jumper selectable, with digital gain adjustments
Dynamic range >80dB
Digital Gain Adjust -10dB to +10dB
DIGITAL AUDIO OUTPUTS
Connectors Balanced XLR, Coaxial, Optical
Sample rates 32, 44.1, 48kHz
Digital Gain Adjust -10dB to +10dB
PHONES AUDIO OUTPUT
Connector 1/4” (6.3mm) jack, stereo
Type Headphones
SILENCE DETECTOR
Threshold Adjustable from -40dBfs to -5dBfs
Trigger time 10-250 sec
Scheduler for disabling Silence Detector and Forcing Audio Source to predened
Source or Silence
USER INTERFACE
Indicators 5 LEDs on front panel, 2 LEDs on rear panel
Web interface control, conguration and status information
SNMP interface control, conguration and status information
Front Panel LCD with Keyboard
Pin Input Pin Input (DB9 Connector on Rear Panel) to externally force the audio
source to predened source
ALARM NOTIFICATIONS
Notify via SNMP, E-mail or Output Pins on DB9 Connector (Rear Panel)
NETWORK
Connector RJ-45
Type Ethernet
Device Discovery UPnP support
OPERATING CONDITIONS
Temperature 10°C - 45°C
Humidity < 75%, non-condensing
POWER REQUIREMENTS
Power supply 115/230V AC (internal switch), 18VA
Connector IEC320, rear panel
SIZE AND WEIGHT
Dimension (W x H x D) 1U, 19” x 1.7” x 6.9”, 483 x 45 x 160 mm
Weight 8 lbs, 3kg

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- 11 -
BLOCK DIAGRAM
A simplied block diagram of DB8008 is shown below
DSP
MAIN
INPUT
L
MAIN
INPUT
R
ADC
JUMPERS
Range:0dBu/+18 dBu
Impedance: 600Ω/10kΩ
JUMPERS
Impedance: 600Ω/10kΩ
Range:0dBu/+18 dBu
AES/EBU
S/PDIF
OPTICAL
MAIN IN
AUX
INPUT
L
AUX
INPUT
R
ADC
JUMPERS
Impedance: 600Ω/10kΩ
Range:0dBu/+18 dBu
JUMPERS
Impedance: 600Ω/10kΩ
Range:0dBu/+18 dBu
AES/EBU
S/PDIF
OPTICAL
AUX IN
SYNC
INPUT
AES/EBU
S/PDIF
OPTICAL
ANALOG
OUTPUT L
ANALOG
OUTPUT R
DAC
JUMPERS
Range:
0 dBu/+18 dBu
JUMPERS
Range:
0 dBu/+18 dBu
PHONES
LAN
ALARM
OUTPUT
Because of the all-digital, minimalist-discrete-component nature of device circuitry, we have
not provided schematic diagrams of the DB8008 in this Manual. Please, note that:
NO USER-SERVICEABLE COMPONENTS INSIDE.
REFER ALL SERVICING TO
QUALIFIED TECHNICAL PERSONNEL.

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- 12 -
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 its condition.
◊ Avoid banging the equipment.
◊ The packing material (plastic bags, polystyrene, nails, etc.) must never be left within reach of
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 purposes 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 its power 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 o the equipment, shut o 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 aect the safety level of your equipment.
◊ The equipment is to be connected to the mains supply and provided with adequate and e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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- 13 -
Before you start
MAINS VOLTAGE SELECTOR
Unless specically requested at time of order, the DB8008 is set at the factory for operation
from 230V, 50/60Hz AC mains. To change the mains voltage for 115V operation, rst remove the
top cover of the unit. A clearly marked slide switch is next to the AC mains connector on the device
circuit board. With power disconnected, use a small screwdriver to change the setting from 230V
to 115V.
230V 115V
POWER CORD
The detachable IEC-type power cord is supplied with the unit. The individual cord conductors
may be color-coded in either of two ways:
1) In accordance with US standards:
BLACK = AC “HOT”
WHITE = AC NEUTRAL
GREEN = EARTH GROUND
2) To European CEE standards:
BROWN = AC “HOT”
BLUE = AC NEUTRAL
GREEN/YELLOW = EARTH GROUND

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- 14 -
OPERATING RECOMMENDATIONS
For the normal and reliable operation of the DB8008 device we recommend to follow the next
list of instructions:
• Please, install the unit only in places with good air conditioning. The unit has been designed
for operation within an ambient temperature range extending from 10 to 50°C. But because
adjacent, less ecient equipment may radiate substantial second-hand heat, be sure that the
equipment rack is adequately ventilated to keep its internal temperature below the specied
maximum ambient. When installing, leave a clearance of at least 1 cm around the equipment
to allow air to pass freely.
• We do not recommend installation in rooms with high humidity, dusty places or other
aggressive conditions.
• Although it is expected that a DB8008 will be installed close to exciters (or transmitters of
even higher-power!), please practice reasonable care and common sense in locating the unit
away from abnormally high RF elds.
• Please, use only already checked power supply cables and sources. The shielded cables
usage is strongly recommended.
• We strongly recommend connecting the device only to reliable power supply sources. In
case of unstable power supply, please use UPS (Uninterruptible Power Supply).
• Please, use the device only with placed top cover to avoid any electromagnetic anomalies
which may cause problems of the normal functionality of the unit.
• Please, connect DB8008 only to good quality Internet connection. This is very important for
the normal remote operation of the unit.
• Please, check if your network settings pass through all the data trac required for the normal
operation of the DB8008 unit.
RADIO FREQUENCY INTERFERENCE (RFI)
Although we have anticipated DB8008 installation in the immediate proximity of broadcast
transmitters, please do practice some care using the unit away from abnormally high RF elds.

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- 15 -
Unpacking and Inspection
IT IS VERY IMPORTANT that the Warranty Registration Card found at the front of this
Manual be completed and returned. Not only does this assure coverage of the equipment under
terms of the Warranty and provide a means of tracing lost or stolen gear, but the user will be sent
specic SERVICE OR MODIFICATION INSTRUCTIONS issued by DEVA Broadcast Ltd.
As soon as the equipment is received, inspect carefully for any shipping damage. If damage is
suspected, notify the carrier at once, and then contact DEVA Broadcast Ltd.
We recommend that you retain the original shipping carton and packing materials, just in
case return or reshipment becomes necessary. In the event of return for Warranty repair, shipping
damage sustained as a result of improper packing for return may invalidate the Warranty!
Mounting
RACK REQUIREMENT
The DB8008 mounts in a standard 19-inch equipment rack and requires only 1¾ inches (1U) of
vertical rack space. The use of plastic washers is recommended to protect the painted nish around
the mounting holes.
HEAT DISSIPATION
Consuming less power than the light in a refrigerator, the DB8008 itself generates negligible
heat. The unit is specied 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.

- 16 -
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Panel Indicators and Connectors
FRONT PANEL
LAN AUX
MP3 MEMORYIP AUDIO
SD CARD
PHONES
DB8008-S ILENCE M ONITOR &B ACKUP A UDIO P LAYER
OK
SOURCE -15
-20
-15
-20
-25
-30
-35
-40
-25
-30
-35
-40
PHONES – Stereo 1/4” (6.3 mm) jack output for headphones;
LAN – indicates LAN presence;
MP3 – indicates MP3 Player active;
IP AUDIO - indicates IP Audio Stream active;
AUX – indicates Auxiliary Source Input active;
MEMORY – blinks when the SD Card is in use, or when the Card is full (memory overow);
SD CARD - 2Gb SD Card for MP3 Audio Backup

- 17 -
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REAR PANEL
LAN
ALARM OUT AUX AUDIO INPUT
LEFT RIGHT AES/EBU S/PDIF
MAIN AUDIO INPUT AUDIO OUTPUT
LEFT RIGHT
AES/EBUS/PDIF SYNC LEFT RIGHT AES/EBUS/PDIF FUSE
GND
MADE IN
BULGARIA
ALARM OUT - DB9 connector;
LAN – RJ-45 connector for TCP/IP connection;
AUX AUDIO INPUTS: Analog Inputs (Left and Right) - XLR Type; Digital Inputs - AES/EBU, S/PDIF and Optical;
MAIN AUDIO INPUTS: Analog Inputs (Left and Right) - XLR Type; Sync Input - XLR Type; Digital Inputs - AES/EBU, S/PDIF and Optical;
AUDIO OUTPUT: Analog Outputs (Left and Right) - XLR Type; Digital Outputs - AES/EBU, S/PDIF and Optical;
AC 115V/230V – Mains connector, IEC320 type;
FUSE - 1A (equipped at factory)

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- 18 -
GPIO CONNECTOR PINOUTS
+3.3V
Main Loss (Collector)
Aux Loss (Collector)
IP Audio Loss (Collector)
GP IN (GPI Selector)
Main Loss
(Emitter)
Aux Loss (Emitter)IP Audio Loss (Emitter)
GND
12345
6789
+3.3V
LOAD
GND
Main (C)
Main (E)
LOAD
GND
+3.3V
Main
Main - Active +
Main - Active 0
+3.3V
LOAD
GND
Main (C)
Main (E)
LOAD
GND
+3.3V
Main
GPI Selector-Normally Open
GP IN GND
GND
GP IN
Electrical Characteristics of Optocouplers
Vec < 6V Ic < 50mA
Vce < 70V Pd < 150mW

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- 19 -
Navigation Through LCD Menu
THE BASICS
Upon power-up, the LCD Screen shows the Company Logo and the model of the device.
After the Initial screen disappears (in a few seconds), it will be replaced by the Main Menu
readings.
This is the starting point of the navigation process.
Prior to proceeding further in the menu structure, it is important to note the basic functionality
- the keyboard (placed on the right of the LCD Screen) consists of [Up], [Down], [Left], [Right]
and [OK] buttons. The Main Menu structure has an up-and-down basis, expanded with left-to-right
branches.

- 20 -
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MENU STRUCTURE
The following block diagram shows expanded view of the menu structure. To switch between the dierent pages use the denoted Buttons.