Description

• The GREEN RF™ technology, combined with new 65:1 devices, is the latest evolution of the world-famous patented COLD-FET™ technology applied on DB’s transmitters.
• AUTOMATIC CURRENT SHARING (ACS): automatic current balancing system, perfect load distribution, best power supplies operating conditions.
• Maximum redundancy: due to optimized ACS system, extremely low output power loss in case of power supply failure. In dual power supply configuration power loss in case of one power supply failure will be less than 35%.
• Instant replacement of the power supplies: easy maintenance, without off-air. The power supply plug-in modules can be safely removed from the front panel without interrupting the transmission.
• Low maintenance costs for the FM transmitter,thanks to the easy access to all components, external cooling air filters, very high MTBF (Mean Time Before Failure) for RF and power supply modules.
• Compact design and low weight to reduce transportation costs and simplify logistics.
• FM transmitter Complete WEB SERVER SNMP, GSM or SMS remote control, available as option.
• Touchscreen display (optional): colorful touchscreen bypassable for manual control to guarantee perfect operation in any transmitter site condition. User friendly, simple and intuitive.
• High efficiency cooling system: the air cooling system limits the heat-sink temperature rise only max 10°C above ambient temperature. This guarantees perfect functioning aven in sites with extreme climate conditions and high temperature.
• Meets or exceeds all the international standards for safety and electrical specifications.

HIGHLIGHTS

• FM transmitter MSE™ (Magnetic Sound Enhancer): a magnetic barrier that protects the VCO (Voltage Controlled Oscillator), the heart of FM modulator, and increases sound quality.
• Stereo Generator: high performance built-in digital stereo coder that provides separation typical > 65dB.
• FM transmitter High frequency stability in short and long terms, assured by digital PLL (Phase Locked Loop) circuit with low frift VCTCXO.
• Frequency Agile Broadband, settable directly from the LCD front panel with 10 KHz steps without need for tuning tools.
• Signal/noise ratio >80dB to assure the highest audio quality.
• Input sensitivity and output deviation adjustable with high precision of 0,05dB through front panel or remotely by web interface.
• FM transmitter level and phase of the pilot tone adjustable from the front panel and Web interface.
• AES/EBU digital stereo audio interface, available as option.
• Powerful modulation limiter keeps the maximum frequency deviation within international requirements to avoid overmodulation and adjacent channels interference. Limiter levels can be set from the front panel.
• FM transmitter Switch-mode power supply, with power factor control. Highly efficient and widely over-rated power supply modules insure low heating, low AC power consumption and superior reliability. The power factor control circuitry meets the international requirements for mains network disturbances.
• FM transmitter High efficiency cooling system. Thanks to the air cooling system, the heat-sink temperature can rise only about 10°C above ambient temperature. This guarantees the proper functioning even in sites with extreme climate conditions and high temperature.

 

MODEL	OUTPUT POWER (W)	CONNECTOR	DIMENSION
MOZART NEXT 1000	1000	DIN 7/16	19” x 2U
MOZART NEXT 2000	2000	7/8”	19” x 3U
MOZART NEXT 3000	3000	7/8”	19” x 3U
MOZART NEXT 3500	3500	7/8”	19” x 3U
MOZART NEXT 6000	6000	7/8”	19” x 4U
MOZART NEXT 7000	7000	1+5/8”	19” x 5U

 

 

GENERAL
Frequency range	87.5 to 108 MHz adjustable with 10kHz step
Output impedance	50 Ω unbalanced
Deviation capability	±75 kHz, up to ± 180 kHz with distortion < 0.5%
Short term stability	± 1 ppm from -5 to +45 °C
RF harmonics	Exceeds CCIR/FCC requirements
RF spurious	Exceeds CCIR/FCC requirements
Pre-emphasis	0, 25, 50, 75 us (selectable)
Modulation monitoring	BNC connector
Pilot tone	Phase and Amplitude adjustable from display and WEB interface
Log file	Up to 200 dated events available from display and up to 64000 dated events available from web interface

 

 

AUDIO INPUTS
Modulating input signal	Mono, Stereo (Left, Right, Left + Right), Encoded stereo (MPX), SCA, RDS, AUX, Digital AES/EBU
Input sensitivity adjustment	With 0,05dB steps by front panel display interface or by WEB interface
Limiter	It can be enabled/disabled and adjusted from 30 kHz to 180 kHz by front panel display and WEB interface
Internal RDS coder	Synchronized with the 19kHz pilot of the internal stereo coder or the 19kHz pilot of an external MPX signal

 

 

MONO
Audio input levels for +/- 75 kHz deviation	Adjustable from -9 to +18 dBu
Audio response	±0.3 dB (30 Hz to 15 kHz)
THD+N on encoded channels	< 0.06% ( typ. 0.03% ) (30 Hz to 15 kHz)
Audio Impedance	10 Ω Balanced or 600 Ω balanced
Audio connector	XLR

 

 

STEREO
Audio input levels for +/- 75 kHz deviation	Adjustable from -9 to +18 dBu
Audio response	±0.3 dB (30 Hz to 15 kHz)
THD+N on encoded channels	< 0.03% (30 Hz to 15 kHz)
Audio Impedance	10 kΩ Unbalanced or 600Ω Balanced
Audio connector	XLR (Left & Right)

 

 

MPX (EXTERNAL CODER)
Audio input levels for +/- 75 kHz deviation	Adjustable from -6 to +6 dBu or from +6 to +18 dBu (selectable at order)
Audio response	±0,15 dB (30 Hz to 100 KHz)
THD+N on encoded channels	< 0.03% (30 Hz to 100 kHz)
Audio Impedance	> 5 kΩ Unbalanced
Audio connector	BNC

 

 

RDS/SCA/AUX (WITH SEPARATED CONNECTORS)
Audio input levels for +/- 75 kHz deviation	Adjustable from -19.5 to +7.5 dBu
Audio Impedance	2 kΩ (others on request) Unbalanced
Audio connector	BNC

 

 

AES/EBU
Audio input levels for +/- 75 kHz deviation	Adjustable from -15 to 0 dBFS
Audio Impedance	110 Ω
Audio connector	XLR

 

 

AC POWER REQUIREMENTS
AC supply voltage	230 VAC single phase / 400 VAC three-phase
AC supply frequency	50 Hz or 60 Hz
Power factor	> 0.9

 

 

ENVIRONMENT
Cooling	Forced air
Service	Continuous 24/24h
Operating temperature	-5°C to +45°C Derate 3°C per 500 m above 2000 mt asl
Relative humidity	Up to 95%