DEVA DB44 User manual

MAINTENANCE AND OPERATION
INSTRUCTION MANUAL
Publish Date: 12-Nov-2012
DB44
Compact FM Radio Monitoring Receiver
and Basic Modulation Analyzer

Contents
Introduction........................................................................................................................................4
General Information..........................................................................................................................5
Product Features................................................................................................................................6
Technical Specications ..................................................................................................................7
Block Diagram ................................................................................................................................9
Factory Default Settings..................................................................................................................10
Network Settings............................................................................................................................10
WEB Server ...................................................................................................................................10
E-mail............................................................................................................................................10
Audio .............................................................................................................................................10
GSM MODEM...............................................................................................................................10
SNMP Settings............................................................................................................................... 11
Management Settings .................................................................................................................... 11
Channel Presets Default Settings..................................................................................................12
Safety Precautions............................................................................................................................13
Panel Indicators and Appointments...............................................................................................14
Front View .....................................................................................................................................14
Rear View ......................................................................................................................................15
Getting Started ................................................................................................................................16
Connection ....................................................................................................................................16
Network Settings............................................................................................................................17
Login .............................................................................................................................................18
Operation..........................................................................................................................................19
Tuner Screen..................................................................................................................................19
Main Screen...................................................................................................................................20
RDS Screen....................................................................................................................................21
ODA Screen...................................................................................................................................22
FM Graph Screen..........................................................................................................................23
MPX Screen...................................................................................................................................24
Spectrum Analyzer Screen.............................................................................................................25
Scope Screen..................................................................................................................................26
Bandscan Screen ...........................................................................................................................27
Status Screen .................................................................................................................................28
LOG Screen ...................................................................................................................................29
Settings Screen ..............................................................................................................................30
Main Settings Screen ................................................................................................................30
Channel Settings Screen ...........................................................................................................32
Alarm Triggers Dened.................................................................................................................34
Alarm Notications .......................................................................................................................36
Management Screen ......................................................................................................................37
External GSM Modem Settings .....................................................................................................39
UPnP and DB44 discovery in Local Networks..............................................................................41
UPnPActivation...............................................................................................................................42
WARRANTY TERMS AND CONDITIONS.................................................................................43
Product Registration Card..............................................................................................................44

THIS PAGE
IS INTENTIONALLY
LEFT BLANK

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Tel: [phone], Fax: [phone]
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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/RBDS Encoders
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.

65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
Tel: [phone], Fax: [phone]
E-mail: of[email protected] ,Web: www.devabroadcast.com
- 5 -
General Information
Compact, Robust, Reliable and Clever - This is just a small part of all the benets of our DB44
FM Radio Monitoring Receiver and Basic Modulation Analyzer. Based on the latest technology,
the DB44 core is DSP based digital design for 24/7/365 operation.
After demodulating the FM signal, the MPX signal is digitalized and all signal processing
is then made through calculations. Digitizing in this way, at the input gives the equipment
measurement reproducibility over time. Digital lters’ accuracy, used in this equipment, enables
the FM multiplex signal’s components to be accurately and repeatedly reproduced from one device
to another, i.e. same signal applied to two devices will give the same result. The processing power
in this equipment enables all measurements to be refreshed simultaneously and synchronously,
thereby allowing for detailed readings of all the Multiplex FM signal components.
DB44 allows you through its TCP/IP and GSM Connectivity to monitor all the RDS and some
other signal parameters from anywhere. You can easily receive the channel status or listen to the
audio from anywhere, using your mobile phone. With the built-in Audio Streamer you can even
listen to, skim and record the audio from any station. DB44 is our most cost effective unit for
permanent monitoring of the quality and continuity FM Radio Stations or Radio Networks.

65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
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- 6 -
Product Features
• Fully DSP based core
• Built-in Oscilloscope allowing Left, Right and MPX display
• MPX Power measurement with data history
• MPX Spectrum analyzer for Left, Right and MPX measurements
• Scope with Cloud Lissajous and Star Stereo Signal Representation
• Selectable De-emphasis – 50µs and 75µs
• Built-in Stereo Decoder; Stereo Presence Detection
• Date & Time Settings for manual or automatic synchronization
• LAN port for full TCP/IP remote control and monitoring
• SNMP remote monitoring and conguration
• Up to 90dBµV direct RFAntenna Input
• Adjustable alarms for RF, Deviation, Audio, Pilot, RDS Signal and RGS Groups
• Firmware update for future-proof operation
• Parameters Factory Restore Option
• FM Band 87 - 108 MHz Basic Spectrum Analyzer
• MPX, PILOT & RDS deviation meters
• LEFT and RIGHT demodulated audio level meters
• Headphones audio output
• RDS and RBDS decoder with BER meter
• Alarm dispatch via E-mail, SMS, SNMP
• Channel status reporting via SMS
• RF and RDS Measurements
• Remote Listening via optional GSM modem
• Real Time Audio Program Streaming
• Dual level access - Administrator and User accounts
• Attractive price and very good price-performance ratio
• Very Intuitive Embedded WEB server for interactive supervision
• Proved and reliable hardware for 24/7/365 operating
• Easy Installation and Setup
• SNTP for automatic synchronization of the built-in clock
• Compact and Robust Aluminum Case for high RF immunity

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- 7 -
TECHNICAL SPECIFICATIONS
RF INPUT
Frequency Range 87.0 to 108.0 MHz, Frequency Agile
Step Increment 50 kHz
Antenna Input 50Ω, BNC Connector, 10 dBµV sensitivity
Internal Attenuator 0, 10, 20 and 30dB, auto
Dynamic Range 0 dBµV to 100 dBµV
S/N 57dB, RF > 60dBµV, 30dB, RF > 10dBµV
METERING RESOLUTION & ACCURACY
RF Level 0 to 95 dBµV; resolution - 0.1 dBµV;
accuracy - ±1 dB (10 to 85 dBµV)
Multipath 0 to 100%; accuracy - ±1%
MPX Deviation ±120 kHz; resolution - 0.1kHz;
accuracy - ±10%, ±5% typically
MPX Power ±12 dBr; resolution - 0.1dBr, 10 sec. integration;
accuracy - ±0.2 dBr
Audio Level -50 to +5dB; resolution - 0.1dB; accuracy - ±5%
Pilot Level 0 to 12 kHz; resolution - 0.1 kHz;
accuracy - ±0.5 kHz, 1 to 12 kHz
RDS Level 0 to 9 kHz; resolution - 0.1 kHz;
accuracy - ±10% typical and not guaranteed
AUDIO, MPX, PILOT, RDS LEVELS
Validity RF level preferably > 50dBµV
Multiplex Level Peak level, 256 ksamples over 1 sec.
Audio Level Peak level, 64 ksamples over 1 sec.
Pilot Level Mean peak level, 256 ksamples over 1 sec.
RDS Level Mean peak level, 256 ksamples over 1 sec.
STEREO DECODER
Stereo Separation >25dB, typical >30dB
De-emphasis 50 or 75µs, Selectable
THD 0.5%
OUTPUTS
Audio stream Icecast/Shoutcast compatible audio stream
Alarms SMS, E-mail, SNMP
Headphone 1/8” (3.5mm) Phone Jack
GSM Modem 15-pin Male D-Sub Connector

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- 8 -
RDS DATA DECODING
Standards European RDS CENELEC; United States RBDS NRSC
Error Correction & Counting Yes
AF Decoding Yes
CT (Time/Date) Yes
PI, PTY, DI, MS Yes
TA/TP Yes
RT (Radio Text) Yes
PS (Program Service name) Yes
PIN Yes
RT+ Yes
TMC Yes
FFT SPECTRUM ANALYSIS
Input Composite MPX, Audio
Dynamic Range 80 dB
FFT Length 1024
Sampling Rate 256 kHz - Composite, 64 kHz - Audio
SCOPE ANALYSIS
Input Composite MPX, Audio
Trigger Mode Auto, Fall
Dynamic Range ±120 kHz
Sampling Rate 256 kHz - Composite, 64 kHz - Audio
USER INTERFACE
Web interface Full monitoring and control; Interactive and easy to use
Indicators 3 LEDs (on front panel)
Headphone Output 1/8” (3.5mm) phone jack (on front panel)
TCP/IP COMMUNICATION
Type Ethernet 10/100M Base-T Port
Connector RJ45 (on rear panel)
OPERATING CONDITIONS
Temperature 10° to 60°C
EMC Immunity 6V/m
POWER REQUIREMENTS
Power Supply External, 12V/1A
SIZE AND WEIGHT
Dimensions (W x H x D) (125 x 31 x 160mm), (5” x 1.2” x 6.3”)
Shipping Weight 1,5 kg

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- 9 -
BLOCK DIAGRAM
A simplied block diagram of DB44 is shown below
Because of the all-digital, minimalist-discrete-component nature of device circuitry, we have
not provided schematic diagrams of the DB44 in this Manual. Please, note that:
NO USER-SERVICEABLE COMPONENTS INSIDE.
REFER ALL SERVICING TO
QUALIFIED TECHNICAL PERSONNEL.

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- 10 -
Factory Default Settings
NETWORK SETTINGS
IP 192.168.1.2
Gateway 192.168.1.1
Subnet Mask 255.255.255.0
DNS 192.168.1.1
DHCP Disabled
WEB SERVER
HTTP Port 80
Admin Username user
Password pass
User Username user
Password pass
E-MAIL
E-mail 1 blank
E-mail 2 blank
Sender blank
Server blank
Port 25
AUDIO
Stream Port 5000
Name DB44 - FM Radio Monitoring Tool
Quality 128 kbps
GSM MODEM
Number 1 blank
Number 2 blank
Number 3 blank
Number 4 blank
Baudrate 9600

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- 11 -
SNMP SETTINGS
Agent Enabled
Agent ID 1
Agent Port 161
Read Community DEVA44
Write Community DEVA44
Manager IP 192.168.1.1
Manager Port 162
MANAGEMENT SETTINGS
Attenuator Auto
De-emphasis 50 µs
Internet Time Enabled
Internet Time Server pool.ntp.org
Internet Time Server Port 123
Time Zone UTC (+00:00)
Web session timeout 3 minutes
SNMP session timeout 1 minute

- 12 -
65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
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CHANNEL PRESETS DEFAULT SETTINGS
Parameter CH 1 CH 2 CH 3 CH 4 CH 5 CH 6
Scheduling Disabled Disabled Disabled Disabled Disabled Disabled
Frequency 98 kHz 98 kHz 98 kHz 98 kHz 98 kHz 98 kHz
Alarms Control All Disabled All Disabled All Disabled All Disabled All Disabled All Disabled
Trigger Time 5 minutes 5 minutes 5 minutes 5 minutes 5 minutes 5 minutes
Release Time 5 minutes 5 minutes 5 minutes 5 minutes 5 minutes 5 minutes
RF Alarm Low Threshold 40 dBµV 40 dBµV 40 dBµV 40 dBµV 40 dBµV 40 dBµV
RF Alarm High Threshold 60 dBµV 60 dBµV 60 dBµV 60 dBµV 60 dBµV 60 dBµV
MPX Alarm Low Threshold 50 kHz 50 kHz 50 kHz 50 kHz 50 kHz 50 kHz
MPX Alarm High Threshold 90 kHz 90 kHz 90 kHz 90 kHz 90 kHz 90 kHz
MPX Power Alarm Low Threshold -8 dBr -8 dBr -8 dBr -8 dBr -8 dBr -8 dBr
MPX Power Alarm High Threshold 6 dBr 6 dBr 6 dBr 6 dBr 6 dBr 6 dBr
Left Alarm Low Threshold -30 dB -30 dB -30 dB -30 dB -30 dB -30 dB
Left Alarm High Threshold 3 dB 3 dB 3 dB 3 dB 3 dB 3 dB
Right Alarm Low Threshold -30 dB -30 dB -30 dB -30 dB -30 dB -30 dB
Right Alarm High Threshold 3 dB 3 dB 3 dB 3 dB 3 dB 3 dB
Pilot Alarm Low Threshold 5 kHz 5 kHz 5 kHz 5 kHz 5 kHz 5 kHz
Pilot Alarm High Threshold 9 kHz 9 kHz 9 kHz 9 kHz 9 kHz 9 kHz
RDS Alarm Low Threshold 2 kHz 2 kHz 2 kHz 2 kHz 2 kHz 2 kHz
RDS Alarm High Threshold 7 kHz 7 kHz 7 kHz 7 kHz 7 kHz 7 kHz
RDS Group Alarm All Disabled All Disabled All Disabled All Disabled All Disabled All Disabled

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- 13 -
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 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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- 14 -
Panel Indicators and Appointments
FRONT VIEW
1 - Phones Output - Audio signal from the tuned frequency.
2 - Power LED Indicator
3 - GSM LED Indicator. This LED can in one of the following states:
Off - no GSM Modem;
Fast Blinking – GSM Modem initialization;
Slow Blinking – GSM Modem present and operating;
4 - LAN LED Indicator. This LED can be in one of the following states:
Off - No User Connected, Logger is active;
Blinking – User is connected, Logger is inactive;

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- 15 -
REAR VIEW
GSM
MODEM LAN
ANTENNA
MAX 120 dBµV
POWER
12V / 2A
1234
5
1 - Power Supply (12V, 2A);
2 - Antenna Input - BNC connector for FM Antenna;
3 - GSM Modem Connector - DB-15 male;
4 - LAN Port / Internet Input – standard RJ-45 port;
5 - Factory Defaults reset button

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- 16 -
Getting Started
For the normal operation of DB44, you will need the following conditions:
- Standard Ethernet 10/100M connection;
- Correct assigned Network conguration and device settings;
To provide all these conditions please, follow the instructions below.
CONNECTION
• Install the unit on its operation place;
• Connect the unit to the power supply network using the power cable provided with the unit;
• Connect the antenna cable to the RF antenna input connector located on the rear panel of the
device;
• Connect DB44 to the TCP/IP network using direct network cable;
• Connect the optional GSM modem via the connection cable provided with the GSM modem.
Please, locate and select proper place of the GSM antenna for achieving better GSM network
coverage.
NOTE: The GSM antenna must be far enough from the monitoring devices. The GSM modem
radiate RF signal that may cause spurious emissions that will make troubles with the accuracy of
the measurements.

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- 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:
IP : 192.168.1.2
Mask : 255.255.255.0
Gateway : 192.168.1.1
DNS : 192.168.1.1
DHCP : Disabled
HTTP Port : 80
Stream Port : 5000
SNMPAgent Port : 161
SNMP Manager IP : 192.168.1.1
SNMP Manager Port : 162
DB44 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 device IP address in the browser’s address eld.
NOTE: If the port is different than the default one (80), it is necessary to specify it, e.g.
http://192.168.1.2:9000
• Press <ENTER>.
If you do not know the IP address you can access DB44 by using UPnP discovery in local
networks (see “UPnP and DB44 discovery in Local Networks” on page 41).
ATTENTION: Depending on Internet Protocol Settings, assigned IPaddress may not be visible
outside your local network, thus device may be accessed only within that network. Consult with
your network administrator for the appropriate IP settings.

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- 18 -
LOGIN
ATTENTION: Upon Login the DB44 Logger will stop and will start again automatically after
Logout.
DB44 serves only one user at a time, thus Username and Password will be requested when
connecting. Default values are user and pass.
Enter your credentials and press Login button to continue to Main screen.
If DB44 is already in use you will be prompted shortly:
NOTE: DB44 will Logout automatically the current session after the dened WEB session
timeout. (see “Management Screen” on page 37)

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- 19 -
Operation
Web interface is visually divided into three parts:
- Top - Navigational Menu;
- Middle - specic contextual readings;
- Bottom - General Tuner and Channel readings, functional buttons.
NOTE: Bottom section of the Web interface is persistent regardless of the current screen,
allowing immediate tuner interactions.
TUNER SCREEN
12 3 4
5 6 7 8
9 10
11 12 13
1 - Frequency indicator showing currently tuned frequency;
2 - Stereo indicator;
3 - RDS presence indicator;
4 - RF Attenuator Status;
5 - RF Level indicator, red zone (low level) is below 20 dBµV;
6 - MPX Level indicator;
7 - Alarm presence indicator - lit red when at least one channel has alarm on it;
8 - Channel Alarms indicator - lit red when Scheduler has detected alarm on channel (see
“Channel Settings Screen” on page 32);
9 - Frequency set buttons;
10 - Channel Preset Buttons - when pressed sets the Tuner at predened frequency. Upon
hovering mouse over preset button, tip showing channel name is displayed;
11 - Device Time (“Management Screen” on page 37);
12 - WEB Session remaining time;
13 - Listen Button - toggles between Play and Stop the current audio stream through available
Audio Device;

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- 20 -
MAIN SCREEN
This screen shows all mandatory parameters represented as LED readings. It is possible to
make fast evaluation of any selected station from this screen.