DEVA Broadcast DB37 User manual

MAINTENANCE AND OPERATION
INSTRUCTION MANUAL
Publish Date: 18-Jul-2023
DB37
HD Radio Streaming Receiver

Contents
Introduction........................................................................................................................................ 5
Typographic conventions .................................................................................................................. 6
General Information.......................................................................................................................... 7
Product Features ................................................................................................................................ 8
Technical Specications .................................................................................................................. 9
Block Diagram .............................................................................................................................. 11
Factory Default Settings .................................................................................................................. 12
How to reset the DB37 to its factory defaults without having access to the WEB interface? 12
Unpacking and inspection ............................................................................................................... 13
Mounting........................................................................................................................................... 13
Rack Requirements 1U .................................................................................................................. 13
Rack Requirements Compact Units............................................................................................... 13
Stand-Alone Devices ..................................................................................................................... 13
Safety Warning................................................................................................................................. 14
Operating Recommendations ......................................................................................................... 15
Getting Started ................................................................................................................................ 16
Connection .................................................................................................................................... 16
Network Settings............................................................................................................................ 17
Network Discovery ........................................................................................................................ 17
Network Security Recommendations ............................................................................................ 18
Panel Indicators and Appointments ............................................................................................... 19
Front Panel.................................................................................................................................... 19
Rear Panel..................................................................................................................................... 20
WEB interface .................................................................................................................................. 21
Main page...................................................................................................................................... 21
FM Dashboard .............................................................................................................................. 22
HD Radio Dashboard.................................................................................................................... 23
Main .............................................................................................................................................. 24
HD Radio ...................................................................................................................................... 25
RDS ............................................................................................................................................... 27
Total groups received indicator................................................................................................ 27
BER........................................................................................................................................... 27
Band Scan...................................................................................................................................... 28
Channels........................................................................................................................................ 29
Alarms ........................................................................................................................................... 30
Status ............................................................................................................................................. 32
Log................................................................................................................................................. 33
General Settings ............................................................................................................................ 34
Audio ............................................................................................................................................. 35
Tuner ............................................................................................................................................. 36
Tuner Frequency Step and De-emphasis.................................................................................. 36
RDS/RBDS Mode...................................................................................................................... 36
Audio Processing...................................................................................................................... 36
Communication ............................................................................................................................. 37
Other ............................................................................................................................................. 39

APPENDIX A ................................................................................................................................... 40
Alarm Triggers .............................................................................................................................. 40
Alarm Notications ....................................................................................................................... 42
APPENDIX B ................................................................................................................................... 43
How should I congure the connection between my DEVA Device and an FTP Client? 43
WARRANTY TERMS AND CONDITIONS................................................................................. 45
Product Registration Card.............................................................................................................. 46

THIS PAGE
IS INTENTIONALLY
LEFT BLANK

65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
Tel: [phone], Fax: [phone]
E-mail: o󰀩[email protected] ,Web: www.devabroadcast.com
- 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 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 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 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 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 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
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 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 products are developed and produced in accordance with the latest ISO 9001 quality
control standards.

65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
Tel: [phone], Fax: [phone]
E-mail: o󰀩[email protected] ,Web: www.devabroadcast.com
- 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

65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
Tel: [phone], Fax: [phone]
E-mail: o󰀩[email protected] ,Web: www.devabroadcast.com
- 7 -
General Information
Reliable, easy to manage and fully compliant with the Digital HD Radio Broadcasting standard,
the DB37 brings together a dependable streaming functionality and practicality at an aordable
price. One of its dening assets is its highly-selective DSP-based tuner, which allows the HD Radio
Broadcast and FM station to be selected, listened to and recorded. Additionally, the dedicated
hardware will let you constantly monitor the sound of your station and will also measure and store
for future analysis the RF level and Left & Right Audio Levels. For an even better performance,
the DB37 comes with a built-in FM RDS/RBDS Decoder and HD Radio PAD Decoder.
Crucially, this product provides an analog input, which allows you to perform not only remote,
but also local audio monitoring. Users can also toggle through the FM and HD Radio broadcast
stream to conrm audio presence and quality in live broadcast environments.
Another great feature of the product is the WEB interface, which guarantees easy remote setup
and control. The setup and control of the unit could be done through your PC, tablet or smartphone,
via a standard web browser. All operating systems are supported.
DB37 oers a great combination of reliable HD Radio streaming and an aordable price.

65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
Tel: [phone], Fax: [phone]
E-mail: o󰀩[email protected] ,Web: www.devabroadcast.com
- 8 -
Product Features
• FM/HD Radio DSP-based Tuner 87.1 - 107.9MHz
• Up to 100 dBµV direct RF Antenna Input
• Selectable wide range IF lter bandwidth
• HD Radio PAD (Program-Associated Data) Information
• Provision for PAD data analysis and Logging
• Selectable De-emphasis - 50µs and 75µs
• RDS and RBDS decoder with BER meter
• Very Intuitive Navigational Menu
• Quick Station access via 4 Presets
• Real Time Audio Program Streaming
• Built-in WEB and FTP server
• Easy to use WEB interface
• Apple and Android devices support
• Protected access to the device settings
• Headphone output with front panel level control
• SNTP for automatic synchronization of the built-in clock
• LAN port for full TCP/IP remote control and monitoring
• Adjustable MIN/MAX alarms for RF, Left & Right Audio Levels
• Alarm dispatch via E-mail, SNMP ver.2C and GPO
• Firmware updates will ensure improved operation

65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
Tel: [phone], Fax: [phone]
E-mail: o󰀩[email protected] ,Web: www.devabroadcast.com
- 9 -
TECHNICAL SPECIFICATIONS
FM/HD RADIO TUNER
Tuning Range 87.1 to 107.9 MHz, Frequency Agile
Tuning Step 10, 20, 50, 100 kHz
Tuner Sensitivity ≤ 10µV for 50dB monaural FM S/N
Antenna Port BNC Connectors, 50Ω
Dynamic range 100 dB
FM DEMOD
IF Filter Bandwidth Adjustable from 10kHz to 150kHz
Frequency Response ±0.1 dB, 10 Hz to 86 kHz
Dynamic range 90 dB
STEREO DECODER
Frequency Response (L and R) ±0.1 dB, 10 Hz to 15 kHz
SNR (Stereo) 60 dB, 50 µs de-emphasis
THD 0.1%, 10 Hz to 15 kHz, 50 µs de-emphasis
Stereo Separation 50 dB, 50 Hz to 10 kHz, 50 µs de-emphasis
HD RADIO
Audio Programs MPS, SPS1 to SPS7
Quality Indicators DAAI, CDNR, HD Radio lock
SIS Data Station Slogan, Station Message, Station Long Name, Station
Universal Short Name, FCCID
PAD Data Artist, Title, Album, Genre
RDS DECODER
Standards European RDS CENELEC; United States RBDS NRSC
Error Correction & Counting Yes
Decoder PI, PS, PTY, AF, RT, RT+, DI, MS, TA, TP, CT, ODA
Group Analyzer Yes
BER Analyzer Yes
Group Sequence Display Yes
RDS RAW Data Display Yes
METERING ACCURACY
RF Level 1%, 0 to 100 dBµV, 1dB resolution
Audio 1%, +5.0 to -50.0 dB, 0.1 dB resolution
Headphone 6,3mm (1/4”) Phone Jack
NETWORK
Connector RJ-45
Type Ethernet
Device discovery UPnP support

65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
Tel: [phone], Fax: [phone]
E-mail: o󰀩[email protected] ,Web: www.devabroadcast.com
- 10 -
MEASUREMENTS AND LOG STORAGE
Storage 16GB Build-in Memory Card
Data format Text, CSV
POWER
Voltage External, 12V/1A
Power Consumption 12VA
Connector Power Jack 5.5mm
SIZE AND WEIGHT
Dimensions (W;H;D) 125 x 31 x 160 mm
Shipping Weight 270 x 54 x 230 mm / 1.054 kg
HS Code 8527212000

65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
Tel: [phone], Fax: [phone]
E-mail: o󰀩[email protected] ,Web: www.devabroadcast.com
- 11 -
BLOCK DIAGRAM
A simplied block diagram of DB37 is shown below
Downconverting
FM demodulation
Stereo decoding
Metering
Digital
HD Radio
Tuner
DSP L/R
Control and
Communication
CPU
Ethernet Front panel
LED
Stream Server
AUX
Audio
Because of the all-digital, minimalist-discrete-component nature of device circuitry, we have
not provided schematic diagrams of the DB37 in this Manual. Please, note that:
NO USER-SERVICEABLE COMPONENTS INSIDE.
REFER ALL SERVICING TO
QUALIFIED TECHNICAL PERSONNEL.

65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
Tel: [phone], Fax: [phone]
E-mail: o󰀩[email protected] ,Web: www.devabroadcast.com
- 12 -
Factory Default Settings
HOW TO RESET THE DB37 TO ITS FACTORY DEFAULTS
WITHOUT HAVING ACCESS TO THE WEB INTERFACE?
LAN
ANTENNA
MAX 110 dBµV
POWER
12V / 2A
MADE IN
BULGARIA
AUDIO INPUT
LEFT RIGHT RESET
BUTTON
1. Disconnect the power supply cable from the unit.
2. Find the RESET button on Rear panel (labeled in red on the picture), press and hold it.
3. While pressing the RESET button, connect the power supply cable to the unit and wait until
the POWER led starts blinking.
4. Release the RESET button and wait for the DB37 to reboot.
5. Once the reboot is complete, the DB37 will be returned to its factory default settings.

65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
Tel: [phone], Fax: [phone]
E-mail: o󰀩[email protected] ,Web: www.devabroadcast.com
- 13 -
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!
The packing material (plastic bags, polystyrene, nails, etc.) must never be left within reach
of children, as these items are potential sources of danger.
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.
Mounting
RACK REQUIREMENTS 1U
The unit mounts in a standard 19-inch equipment rack and requires only 1¾ inches (1U) of
vertical rack space. In order the painted nish around the mounting holes to be protected, the use
of plastic washers is recommended.
RACK REQUIREMENTS COMPACT UNITS
Our customized 1U 19-inch rack accessory provides a professional mounting option for up to
three compact size DEVA units. It is made of milled aluminum and nished in black powder coat.
Two extra blanking panels and set of mounting screws are provided with each rack bracket kit.
STAND-ALONE DEVICES
DEVA’s stand-alone units (Radio Explorer series, BandScanner series, DVB Explorer) do not
require additional tools or installation brackets.

65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
Tel: [phone], Fax: [phone]
E-mail: o󰀩[email protected] ,Web: www.devabroadcast.com
- 14 -
Safety Warning
ALWAYS OBSERVE THE SAFETY PRECAUTIONS.
Careful observance of the safety precautions will help prevent physical injury, damage of the
equipment, and extend the equipment life.
• The servicing of electronic equipment should be performed only by qualied personnel;
• Before removing the covers the unit 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.
• Do not remove the factory sticker from the equipment. It contains information as regards
the name, serial number and MAC address of the device.
• To join the equipment to the mains supply, use the power cord purchased with the equipment.

65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
Tel: [phone], Fax: [phone]
E-mail: o󰀩[email protected] ,Web: www.devabroadcast.com
- 15 -
Operating Recommendations
To ensure normal operation of the DEVA unit, we recommend following the instructions listed
below.
• Install the unit in places with good air conditioning. The unit 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;
• Although the device is intended to be installed closed to exciters or transmitters, we do
recommend the device to be located away from abnormally high RF elds.
• Use only checked power supply cables. We strongly recommend the usage of shielded
cables;
• Connect the DEVA unit to reliable power supply sources only. 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;
• To ensure normal remote operation of the unit, make sure to connect the device to a good
quality Internet connection;
• For the normal operation of your DEVA device, check if the network settings past through
all the required data trac.

65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
Tel: [phone], Fax: [phone]
E-mail: o󰀩[email protected] ,Web: www.devabroadcast.com
- 16 -
Getting Started
In order for the normal operation of the DB37 to be guaranteed, you will need fulll the
following conditions:
1. Standard Ethernet 10/100M connection;
2. Correctly assigned Network conguration and device settings.
To make sure that all the conditions are fullled please, follow the instructions below.
CONNECTION
1. Install the unit on its operation place;
2. Using the provided power cable, connect the unit to the power supply network;
3. Connect the antenna cable to the RF antenna input connector located on the rear panel of
the device;
4. Connect the DB37 to the TCP/IP network using direct network cable;
5. IF GSM OPTION IS SUPPORTED - Using the connection cable provided, connect the
optional GSM modem. In order for better GSM network coverage to be achieved, please
select proper place for the GSM antenna.
NOTE: The GSM antenna must be installed far enough from the monitoring devices. The
GSM modem radiates RF signal that may cause spurious emissions that will may interfere with the
accuracy of the measurements.

65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
Tel: [phone], Fax: [phone]
E-mail: o󰀩[email protected] ,Web: www.devabroadcast.com
- 17 -
NETWORK SETTINGS
After connecting the network cable the Led ‘LAN’ located on the rear panel must be ON or
ashing. The next and most important step for conguration is the adjustment procedure of the
Network Communication. The settings shown below are Default Network Settings:
DHCP Enabled
IP Assigned by DHCP
Mask Assigned by DHCP
Gateway Assigned by DHCP
DNS Assigned by DHCP
HTTP Port 80
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 DB37 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.
NOTE: If the port is dierent than the default one (80), it is necessary to specify it, for example:
http://192.168.1.2:9000
ATTENTION: Depending on Internet Protocol Settings, the assigned IP address may not be
visible outside your local network, thus the device may be accessed only within that network.
Consult with your network administrator for the appropriate IP settings.

65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
Tel: [phone], Fax: [phone]
E-mail: o󰀩[email protected] ,Web: www.devabroadcast.com
- 18 -
NETWORK SECURITY RECOMMENDATIONS
1. It is not recommended the DB37 to be directly connected to the Internet. This may lead to
unregulated access and/or problematic operation of the device. To ensure secure connection,
we recommend the device to be installed behind a router with an active rewall.
2. If remote access to the device is needed, we recommend using VPN to the router or the port
of the relevant service (WEB, SNMP, Application, etc.) to be properly NAT forwarded.
3. If NAT forward is used, it is highly recommended random ports of your choice to be used.
Not the standard ones (80 for WEB, 161 for SNMP, etc.).
4. Using DMZ connection is not recommended.
5. Make sure to change the standard access credentials (usernames and passwords, SNMP
communities).
For detailed information as regards the recommendations listed above or need of further
instructions, please contact your network administrator.

65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
Tel: [phone], Fax: [phone]
E-mail: o󰀩[email protected] ,Web: www.devabroadcast.com
- 19 -
Panel Indicators and Appointments
FRONT PANEL
12
34
PHONES ALARMPWR LAN
SR TREAMING ECEIVER
M DB37
ODEL
1 - Phones Output - Audio signal from the tuned frequency.
2 - Power LED Indicator
3 - LAN LED Indicator. This LED can be in one of the following states:
O - No User Connected, Logger is active;
Blinking – User is connected, Logger is inactive;
4 - ALARM LED Indicator. This LED can in one of the following states:
O - no active alarm
On - at least on alarm is active

65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
Tel: [phone], Fax: [phone]
E-mail: o󰀩[email protected] ,Web: www.devabroadcast.com
- 20 -
REAR PANEL
LAN
ANTENNA
MAX 110 dBµV
POWER
12V / 2A
MADE IN
BULGARIA
AUDIO INPUT
LEFT RIGHT
1234 5
6
1 - Power Supply (12V, 2A);
2 - Antenna Input - BNC connector for FM Antenna;
3 - AUX Audio Input LEFT channel - standard RCA female jack;
4 - AUX Audio Input RIGHT channel - standard RCA female jack;
5 - LAN Port / Internet Input – standard RJ-45 port;
6 - Factory Defaults reset button