Deva Broadcast DB45 – DSP-Based FM Radio Receiver and Modulation Analyzer

Maintaining the high standards of the DEVA product range, the DB45 model is the very definition of reliable monitoring of the FM signal. With a compact and practical design, it incorporates a variety of features spelling accurate  and dependable measuring of the signal parameters, including the RF level, MPX deviation, MPX power, Left & Right audio levels, RDS, and Pilot injection levels.

The DB45 boasts a fully DSP-based core and guarantees round-the-clock operation. Upon demodulation of the FM signal, the RF signal is digitalized by the SDR FM tuner and all signal processing is achieved through calculations. The precision of this tool’s digital filters means that the FM Multiplex signal’s components can be accurately and repeatedly
reproduced from one device to another, i.e. the same signal applied to two devices would give the same result. All measurement can be refreshed simultaneously and synchronously so that detailed readings of the Multiplex FM signal components can be obtained.

The DB45 supports TCP/IP and optional GSM connectivity, allowing for easy monitoring of the channel status and listening to real-time audio no matter where you are – all that is required is a mobile phone. Another impressive feature of this tool is the built-in audio streamer which gives users the opportunity to listen to and record the audio from any station.
The DB45 model provides an RDS/RBDS decoder with BER meter, as well as adjustable alarms for RF, deviation, Pilot and RDS signal via email, SMS and SNMP, while the WEB interface makes for easy set-up and control of your unit.

The DB45 is an indispensable piece of equipment when it comes to accuracy and reliability. Coupled with an affordable price, all its features contrive to produce an impeccable monitoring performance.

Features:

• Date & Time Settings with various formats
• Firmware update for future-proof operation
• FM Band 87 – 108 MHz Basic Spectrum Analyzer
• LEFT and RIGHT demodulated audio level meters
• Built-in Stereo Decoder; Stereo Presence Detection
• Proved and reliable hardware for 24/7/365 operating
• Attractive price and very good price-performance ratio
• LAN port for full TCP/IP remote control and monitoring
• SNTP for automatic synchronization of the built-in clock
• Adjustable alarms for RF, Deviation, Pilot and RDS signal
• Built-in Oscilloscope allowing Left, Right and MPX display
• Compact and Robust Aluminum Case for high RF immunity
• MPX Spectrum analyzer for Left, Right and MPX measurements
• Very Intuitive Embedded WEB server for interactive supervision
• RF Spectrum analyzer allowing to check the RF Carrier parameters
• MPX Power measurement with data history
• Remote Listening via optional GSM modem
• Selectable De-emphasis – 50µs and 75µs
• Up to 90dBµV direct RF Antenna Input
• Alarm dispatch via E-mail, SMS, SNMP
• RDS and RBDS decoder with BER meter
• Real Time Audio Program Streaming
• Parameters Factory Restore Option
• MPX, PILOT & RDS deviation meters
• Channel status reporting via SMS
• Intuitive Application Interface
• Easy Installation and Setup
• RF and RDS Measurements
• Headphones audio output
• Fully DSP based core

RF Input

Tuning Range User selectable, 87.1-107.9 MHZ (CCIR),
65-74 MHz (OIRT), 76-95 MHz (Japan)
Tuning Step 10, 20, 50, 100 kHz
Tuner Sensitivity 30 dBµV
Antenna Port BNC Connector, 50Ω
Internal Attenuator 0, 10, 20 and 30 dB
Dynamic range 100 dB

FM Demod

IF Filter Bandwidth 15 Increments (25kHz – 157kHz, Auto)
Frequency Response ±0.1 dB, 10 Hz to 86 kHz
Dynamic range 90 dB

Stereo Decoder

Freq. Response (L&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-emph.
Separation 50 dB, 50 Hz to 10 kHz, 50 µs de-emph.
Crosstalk 52 dB

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

Outputs

Audio stream Icecast/Shoutcast compatible audio stream
Alarms E-mail, SMS, SNMP
Headphone 1/8″ (3.5mm) Phone Jack

Measurement Storage

Storage 2GB Build-in Memory Card
Data format Text, CSV

Power Supply

Voltage External, 12V/1A

RDS Decoder

Standards European RDS CENELEC;
United States RBDS NRSC
Error Correction & Counting Yes
AF, CT, PI, PTY, DI, MS, TA/TP Yes
RT (Radio Text), RT Yes
PS (Program Service name) Yes
ODA Yes
Group & BER Analyzer Yes
Group Sequence Display Yes
RDS RAW Data Display Yes

Metering Accuracy

RF Level ±1 dB, 0 to 100 dBµV
Multipath 0 to 100%; accuracy – ±1%
MPX Deviation ±2 kHz, 10 to 100 kHz, 1 kHz resolution
MPX Power ±12 dBr; resolution – 0.1dBr,
10 sec. integration; accuracy – ±0.2 dBr
Pilot Level ±0.5 kHz, 1 to 12 kHz, 0.2 kHz resolution
RDS Level ±0.5 kHz, 1 to 12 kHz, 0.2 kHz resolution
Audio Level ±1 dB, 10.0 to -55.0 dB, 0.1 dB resolution

User Interface

Web interface Full monitoring and control;
Interactive and easy to use
Indicators 3 LEDs (on front panel)

Communication Interfaces

Ethernet 10/100 Base-T RJ45 Connector
GSM Modem 15 pin Male D-Sub Connector

Operating Conditions

Temperature 10° to 60°C
EMC Immunity 6V/m

Size and Weight

Dimensions (W;H;D) 125 x 31 x 160 mm
Shipping Weight 270 x 54 x 230 mm / 1.1kg