R&D for an innovative acoustic positioning system for the KM3NeT ...
R&D for an innovative acoustic positioning system for the KM3NeT ...
R&D for an innovative acoustic positioning system for the KM3NeT ...
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Tests with <strong>KM3NeT</strong> “backup solution” data tr<strong>an</strong>smission electronics<br />
The Acoustic Board design is based on commercial audio professional components:<br />
ADC Stereo 24 bit/192 kHz Max input 2 V RMS<br />
AES3 compli<strong>an</strong>t DIT (Data Interface Tr<strong>an</strong>smitter)<br />
power 160 mA @ 5.3VDC<br />
Devices are piloted by 24.576 MHz Clock from <strong>the</strong> FCM (<strong>for</strong> 192 kHz sampling rate)<br />
Power to<br />
preamps<br />
FCM off-shore<br />
adds GPS time to <strong>the</strong><br />
audio data stream<br />
11 cm<br />
Acoustic Board<br />
Digital audio<br />
data (out)<br />
clock, reset<br />
(in)<br />
FCM on-shore<br />
distributes <strong>the</strong> GPS<br />
time to <strong>the</strong>off-shore<br />
electronics<br />
Optical link shore-sea<br />
Analog signal inputs from preamps<br />
Digital Audio signal ouput<br />
Giorgio Riccobene, LNS-INFN VLVnT 2009, A<strong>the</strong>ns October 13 –15 ,2009
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