Dear All,
I've just joined this list, and I'm trying to find out whether a USRP
could be used/modified in an unusual way.
What we're trying to do is build an interface for a HAWAII Focal-Plane
Array (basically, a 1 Mpixel CCD that is sensitive to the far Infrared,
and works in Liquid Nitrogen) - the use would be for the COAST and MRO
telescopes.
The requirements are these - I'd be very grateful for some advice as to
whether I'm on a fruitful track or not:
* 4 channels (1 quadrant each), each able to sample at upto 1M sample/sec.
* Inputs are DC-coupled, and full swing is 0.4 - 1.0 Volt.
* Resolution required is 16 bit (could a 14-bit ADC do it, with
dithering?)
* Low noise and self-interference (eg clock coupling into inputs).
[we're trying to catch a few photons at a time]
* External synchronisation of the ADC sample-clock, OR 24 channels of
10MHz digital I/O.
Is this possible? Could it be made to work? I'm currently going slowly mad
over a custom-built system!
Thanks very much for your help,
Richard
--
[EMAIL PROTECTED] http://www.richardneill.org
Trinity College, Cambridge, CB2 1TQ
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