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© 2018 by TVV Sound / Proudly created by Schiettecatte J

The DB4004 is our second generation digital FM Radio Modulation Analyzer. It combines our long term experience in FM Radio Monitoring and FM radio measurement “know how.” The RF (IF) signal is digitalized as soon as it enters the device and all signal processing is then made through DSP algorithms. Digitizing the signal in this way, at the input, gives the equipment measurement reproducibility over time. The powerful accuracy of the digital filters used in this equipment enables the FM multiplex signals components to be accurately and repeatedly reproduced from one device to another. The incredible processing power in the device enables all measurements to be refreshed simultaneously and synchronously, thereby allowing for detailed readings of all the Multiplex FM signal components. The DB4004 has 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 DB4004 Oscilloscope representing the observed signal change over time enables you to visualize the most important signals participating in the process of demodulating and stereo decoding. Complimenting the Oscilloscope mode, the Spectrum analyzer mode allows spectral analysis of the input signal and part of DB4004 features. 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. In addition to the list of DB4004 features, RDS information contained in the processed MPX signal is easily visualized and represented as RDS/RBDS Data and detailed RDS/RBDS Statistics.


• Accurate front-panel metering for local use • Wide operating voltage range: 100-240V AC • Selectable wide range IF filter bandwidth • RDS and RBDS decoder with BER meter • Up to 100 dBµV direct RF Antenna Input • Easy and intuitive Windows Application • Protected access to the device settings • Levels measurement with data history • Wide angle, easy to read OLED display • Real Time Audio Program Streaming • Apple and Android devices support • Restore Factory Parameters option • Quick Station access via 4 Presets • Very Intuitive Navigational Menu • Built-in 50 channel Data logger • Built-in WEB and FTP server • Easy Installation and Setup • Easy to use WEB interface • Built-in Stereo Decoder • Fully DSP based core • Remote Listening via optional GSM modem • 19" Professional Case for high RF immunity • Selectable De-emphasis - Off, 50µs and 75µs • Dual antenna ports with built-in RF attenuator • FM Band 87 - 108 MHz Basic Spectrum Analyzer • Headphone output with front panel level control • Alarm dispatch via E-mail, SMS, SNMP and GPO • Firmware updates will ensure improved operation • USB communication interface for local connectivity • Left, Right, L+R, L-R bar graph LED audio level meters • LAN port for full TCP/IP remote control and monitoring • SNTP for automatic synchronization of the built-in clock • Complete status reporting with SMS via optional GSM modem • Professional AES/EBU, SPDIF and Optical Digital audio outputs • Spectrum analyzer allowing checking of the RF Carrier and MPX • Total and independent Positive and Negative deviation bar graph • Level Adjustable, Balanced Analog Audio Outputs on XLR Connectors • Bright, accurate bar graph LED metering of the Modulation and Pilot Levels • Adjustable MIN/MAX alarms for RF, MPX, MPX Power, Pilot, RDS, Audio • Built-in Oscilloscope for IF, MPX, Pilot, Subcarriers, Left, Right, L+R and L–R display

DB4004 – DSP-based FM Radio Monitoring Receiver with TCP/IP Connectivity

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