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The world's first audio processor with the new Audio Processor technology presented at AES convention LAC2022, achieving greater reach with surround sound.
So your radio can have the sound that your competition can't achieve.
The 542 never ages; on the contrary, it improves over time as its software is updated for free for 20 years with the push of a button, without interrupting on-air programming.
Its internal FM monitor analyzes 24 RF parameters and is the only one in the world that also analyzes sound quality (THD, S/N ratio, and stereo separation) automatically and without disturbing the listener.
Complies with ITU BS412 standard and Loudness ITU-R BS.1770 / EBU R128 standard.
Audio Processor Specs
Measured from balanced XLR inputs to XLR outputsInputs | 1-XLR3 connector 600 ohms balanced, Nominal level + 4 dBu. Max level + 24 dBu, Software adjusted. 2-RJ45 stereo balanced (compatible with StudioHUB) Nominal level -10 dBu to + 24 dBu, 600 ohms balanced. 3- Digital AES / EBU input transformer balanced) Nominal level -18 dBFS Adjust from -24 to 0 dBFS. 4-Optional digital stereo AoIP option for LAN Ethernet or Internet input. RF Input: Digital Receiver for use as FM Monitor and Audio Analyzer. VOICE / MUSIC change: GPI Input = + 5V ... + 15V for VOICE mode preset (On-Air microphones) Voice/Music switch received from console in AoIP models. Switching Between all Music Style Program settings using RDS data from studio. |
Outputs | 1-Analog Balanced, XLR connector + 4 dBu; Z = 600, Max + 18 dBu, Flat frequency response 2- Analog unbalanced output RJ45 (Compatible with StudioHub) + 4 dBu / 600 ohms 3- Digital AES/ EBU, transformer balanced ) 0 VU at -12 dBFS 4 & 5 - MPX-1 & MPX-2 for FM transmitters (Normal & Emergency) 0 to 5.5 Vpp Independent level software controlled, Z = 50 ohms Differential output, BNC connector, floating ground 50 ohms. Allows 45 dB canceling buzz & noise due to ground loops. Protected for electrical storms 2 KV overload Optional AoIP processed digital output in /AoIP models. It allows for direct audio streaming or for AoIP connection between different studios at the Radio / TV station. |
IN / OUT Control | Remote control by software of the Input - Output Matrix Automatic programable transfer from one input to another. When audio fail is detected. |
Frequency Response | ANALOG BAL = 20-16000 Hz +/- 0.3 dB AES to AES = 20-16000 Hz +/- 0.3 dB Measured below compression & Limiter threshold. |
Harmonic Distortion | ANALOG BAL = Below 0.005% @ 1 kHz AES to AES = Below 0.002% |
Delay | 3 to 9 ms Depending on preset used |
Dynamic Range | ANALOG to ANALOG BAL BAL >95 dBA AES to AES >110 dBA |
Stereo Separation | > 80 dBA |
Subsonic Filter | Chebyshev 4th order, Selectable: OFF - 15 Hz - 20 Hz |
Asymmetry Canceling | 5:1 voice asymmetry reduction, using Khann-Bonello algorithm. |
Expander | 5 bands low level expander |
AGC | One Wide-band AGC AGC and 5 bands (Leveler) |
Multiband Compressors | FIVE or more bands depending of software version used . Standard model of 5 bands includes: 5 x AGC (Levellers); 5 x Compressors; 5 x Limiters; 5 x Clippers Linear Phase Crossovers Full software control of all parameters 12 - 16 factory presets programs. |
Effects | Super BASS effect and Stereo Enhancer is standard in all software versiones. Linear limiters with predictive technology (Look Ahead) gives the audience a full clean sound. |
Pre-Processing Equalizer | Full Parametric EQ With four bands. Each band with 2order passband filter with: a) Level Control; b) Frequency control; c) Q factor control (bandwidth) |
Proccesing | Number of bands and stages, features, etc. are dependent on software version used It can work in FM, AM, HD, TV & Streaming modes Standard 542APC works in Five bands FM mode 0-50-75 uS |
Power | 115 V / 230 V (rear switch selected) 50/60 Hz, 20 W |
Dimensions | 19 "rack mount. Module one (44.4 mm) // weight 3 kg Net; (4 Kg for courier freight ) |
DSP Stereo Coder
MPX output | Two MPX outputs with individual remote level control by LAN or Internet Differential output, BNC connector, floating ground 50 ohms. Allows 45dB canceling due to buzz noise & ground loops Level of each output adjustable from 0 to 5.5 Vpp |
Frequency Response | 20-15000 +/- 0.2 dB, plus 16 Khz / linear phase filter Attenuation at 19 kHz> 80 dB |
Harmonic Distortion | From 30-12.000 Hz, below 0,01 % Measured using Belar Digital Stereo decoder DSD-1A and Spectrum Analyzer. |
Signal to Noise ratio | Better than 85 dBA with reference to 100% modulation Measured using Belar Digital Stereo decoder model DSD-1A. |
Stereo Separation | > 65 dB at 1kHz |
38 Khz suppression | Below - 80 dB Ref 100% modulation |
57, 76 & 95 Khz suppression | Below - 80 dB Ref 100% modulation |
Pilot tone stability | +/- 0.002% (+/- 0.5 Hz) |
RDS Encoder
RDS / RBDS signal | Conforms to CENELEC EN50067 / EN 62106 / Control interface based on ASCII protocol commands and UECP Built-in weekly scheduling |
RDS signal bandwidth | +/- 2.4 kHz (50 dBc) |
Spurious suppression | > 90 dB |
Harmonics suppression | > 80 dB |
Clock Reference | Pilot Tone |
19 kHz pilot lock PLL bandwidth | +/- 2 Hz |
Data Connector: RS-232 | RJ45 connector for TCP / IP Ethernet LAN Text features include dynamic PS, parsing, scrolling, fixed messages, scheduling and reading from HTTP |
Data Port speed | 2400 - 9600 bps |
Supported services | PI Program Identification, M / S Music / Speech, PS Program Service, PIN Program-Item Number, PTY Program Type ECC Extended Country Code, TP Traffic Program, RT Radiotext, AF Alternative Frequencies, BDD Transparent Data Channels TA Traffic Announcement, IH in House Applications, PTYN Program Type Name, ODE Open Data Applications, DI Decoder Identification, CT-Clock Time and Date, EON Enhanced Other Networks information |
FM Modulation Monitor & Analyzer
Data Display | All information is remotely read from studios or from any place in the world. You can use standard PCs, Tablets or even cell phones. Usually the first time 542 is on Air Solidyne reads from factory all 24 transmission parameters and adjust Modulation, Pilot tone, RDS signal, Stereo Separation and improves the lack of good separation due to SWR at antenna, coaxial cable and transmitter |
On Air Measures during normal program | The 542 can do all the measures, including channel separation, audio distortion THD and background noise during the normal program of the radio station because it is not noticed by the audience \nUsing an exclusive proprietary technology it works sending to the air very short (few milliseconds) test signals mixed with the voice or music of the program. The digital receiver of the 542 analyzes this brief information in order to convert it to valuable data. |
Parameters measured | Percentage of FM modulation in real peak, Carrier frequency, Percentage of 19 kHz pilot tone, Percentage of RDS subcarrier, RF level input (dBuV), Multipath (%), L & R Audio level, L & R Stereo channel separation (dB) , Transmitter and aerial harmonic distortion (THD at 1 KHz), Carrier offset, Ultrasonic Noise (dB Ref carrier), SR at 200 KHz offset from carrier, High and Low side SR at 100 kHz deviation, RDS bit error%, RDS data RT , PS, PTY, PI |
Full transmission parameters chart | All transmission parameters data is recorded at a TXT file that can be sent by mail to the engineering department or to the government control authority as a proof of the good transmission quality. Even small damages of coaxial cable or antenna dipoles after storms are detected by the reduction of stereo channel separation. |
Radiated Power Chart | The range of a FM radio stations depend on the effective radiated power of the transmitter. The Modulation Analyzer creates continuously a chart of the radiated power. It can be seen at the PC that controls the 542. \nUsing this unit in European countries it complies with ITU BS 412 standard of reduced RMS power to avoid interference with near frequency FM stations |
Automatic mailing of troubles | The 542 internal FM modulation monitor can be settled to send to the station manager or engineer a mail to their PC or Cell Phone in order to inform them about over modulation or 3 sec silence You will ever be sure about the correct performance of your FM station |