65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
Tel: +359 56 820027, Fax: +359 56 836700
E-mail: [email protected] ,Web: www.devabroadcast.com
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General Information
DB4005 is DEVA Broadcast’s third-generation digital FM Radio modulation analyzer and
receiver, the result of long years of experience and a desire to always provide intelligent near-
perfect solutions, while keeping pace with the very latest technological developments and trends.
With this product, upon demodulation of the FM signal, the RF signal is digitalized by the
SDR FM tuner and all signal processing is achieved through sophisticated DSP algorithms. The
high precision of the powerful digital filters used in this equipment enables the FM signal to be
accurately and repeatedly analyzed with each device. An important asset to the DB4005 is the
MPX input, which allows you to monitor external composite signals, regardless of whether they
are from a composite STL receiver/stereo FM encoder, or from an off-air source. As this is a tool
of great processing power, it provides detailed readings of all the multiplex FM signal components,
while all measurements are refreshed simultaneously and synchronously.
Another useful feature of the DB4005 is the Loudness Meter, which allows for measurements to
be shown as defined by ITU BS.1770-4 and EBU R128 recommendations, as the product supports
both standards.
The DB4005 has an easy to read, high-resolution OLED graphical display and ultra-bright
bargraph LED 60 segment indicators that allow reading the main signal parameters at a glance.
The built-in oscilloscope represents the observed signal change over time and helps you visualize
the most important signals participating in the process of demodulating and stereo decoding.
Complementing the Oscilloscope mode, the Spectrum analyzer mode allows for spectral analysis
of the input signal. Spectral components of the selected signal are determined on the basis of Fast
Fourier Transform. MPX Power and all other level measurements are supported by measurement
history data. Additionally, RDS information contained in the processed MPX signal is easily
visualized and represented as RDS/RBDS Data and detailed RDS/RBDS Statistics.
Dependable off-air monitoring enables you to keep an eye on other stations as well as measure
the important parameters of your own signal. The DB4005 is designed to support USB and LAN
communication interfaces, allowing flexibility of the remote connection and control of the unit.
The DB4005 is the most cost-effective way for regular monitoring of the quality and continuity of
your station and up to 50 other FM Radio Stations, with many features such as TCP/IP connectivity,
audio streaming, and automatic alerts for operation outside of predefined ITU-R ranges. In case
of transmission failure, maintenance staff will be immediately alerted via e-mail, SNMP, or SMS,
which signals the technicians to restore the normal service as soon as possible. The DB4005 allows
you to monitor all RDS/RBDS and other signal parameters from everywhere via its communication
channels TCP/IP, and allows for GSM Connectivity via the optional external GSM Modem. Easy
channel status monitoring or audio listening from everywhere could be done through your mobile
phone. With the Audio Stream Server you can even listen to, skim through, and record the audio
from another station.
All the channel measurements and logs are saved on the internal device memory. The built-in FTP
system manages the files in accordance with an assigned schedule. All the collected information is
centralized in a database and can be revised, played back, and sent automatically to the qualified,
staff if need be. The Interactive Software-based Log Viewer tool allows very detailed control and
analysis of any station from the list of monitored channels. The Band Analyzer function presents
an overview of all FM signals available, plus the RF signal strength of these stations. Scans are
possible within any section of the FM band in 3 different modes. The generated spectrum diagram
shows the RF Level vs. the Frequency.
