ADA102 Coder / Decoder
Technical Specifications, version II
Coder / Decoder Mode
ADA102 is able to work as Coder or Decoder depending on the software loaded. The client is able to change this software from a PC or laptop.
Using non compressed PCM signals, ADA102 can work bidirectional (full duplex)
Analog Input / Output
Stereo balanced In / Outs -10 to + 15 dBu input level, regulated by front panel level control
Max output level + 20 dBm over 600 ohms (at FSD level)
0 VU at meter: + 4 dBu out
Digital IN / Out
OPTIONAL: AES 3 professional balanced digital stereo IN / Out Z=110 Ohms.
Full compatible S/PDif
Frequency Response
Analog: 30 – 15.000 Hz +/- 0,5 dB @ 192 kbps
Digital AES 3: 20 – 15.000 Hz +/- 0,1 dB @ 192 kbps
Distortion
Less than 0,01 % THD distortion, Analog or Digital @ 192 kbps
Typical AES 3: 0,005 % @ 192 kbps Total coder+Decoder
Noise
Dynamic Range > 70 dBA @ 192 kbps as encoder
Dynamic Range > 80 dBA @ 192 kbps as decoder
Dynamic range AES 3: > 90 dBA @ 192, Total Encoder + Decoder
Headroom
Safety level from 0 VU meter to Full Digital Scale: 15 dB
VU Meter Level
Measures true peak level with a peak-hold system
Channel Separation
Better than 70 dB @ 1 kHz, Analog
Better than 90 dB @ 1 kHz, Digital AES 3
Power Supply
220-240V / 110 – 127 V 50 / 60 Hz, 15 VA
Digital Streaming & Control signals
Streaming connection
Standard RJ45 Ethernet connection TCP/IP
Standards supported
MP3 Layer 1 (32, 44.1 and 48 kHz)
MP3 Layer 2 (16, 22.05 and 24 kHz)
G.711 (µLaw / A-Law 8 and 24 kHz sampling rate)
16bit PCM uncompressed (8,16,32,44.1 & 48 kHz)
Full duplex (transmitting and receiving)
MONO Streaming: MPEG1/2 Layer 3, VBR (Fs: 48KHz): 72 76 80 88 96 112 144 160kbps
STEREO Streaming : MPEG1/2 Layer 3, VBR (Fs:48KHz):88 96 104 120 144 160 176 192kbps
Protocols
IP standard based protocols; TCP/IP, UDP, HTTP, ICMP, SNMP
Supports BootP, DHCP and Auto IP
It supports RTP for low latency
Latency (time delay)
ADA102 has a latency of only 50 – 100 mS
Variable Bit Rate (VBR) Encoding
The MP3 encoder uses Variable Bit rate Encoding (VBR) to
realize optimal compression of the audio data. The
setting of a fixed bit rate is replaced with setting a quality
level that preserves audio quality in critical sections
and enhances compression otherwise.
RS 232 Port
Bidirectional serial port RS232 used for Audio Processor control from studios, RDS signal control or Transmitter remote control
Supports all speeds up to 96 Kbits/s
4 channels remote control line
Used for switch on-off transmitter, change to Day-night power, change antenna array, etc.
Four On-Off lines, 2 relay outputs (120 V – 1 A) and 2 open collector outputs (up to 24 V / 0,25 A )
In/Outs using D-15 female connector
Emergency Radio Program
In case of Internet streaming interruption, ADA102 starts to reproduce a pre-recorded radio program. The user must record it on a Pen Drive, using MP3 format. The Emergency Radio Program could be only music or a complete program several hours long.
