hi john, to get a real number, it would be best to compile the design . you can re-compile zaki's octal F engine designed for roach I (8 inputs at 250 Msps), or Hong's F engine (32 inputs at 250 Msps, designed for roach II).
rough guess: you can get 32 analog inputs at 1K channels, or 16 analog inputs at 2K channels, or 8 analog inputs at 4K channels, or 4 analog inputs at 8K channels. best wishes, dan On Fri, Aug 24, 2012 at 7:54 AM, Jon Richards <[email protected]> wrote: > ** > All, > > I need some advice. We are looking into developing an FX correlator using > the Roach2 s as the "F" and GPUs as the "X". > > We will have 4 inputs to the Roach2 ADCs, at 250Msamples/sec, 8Gb/sec > flowing out to the X boards. How many channels should the Roach2 be able to > process? How would I guestimate that? > > Any ideas appreciated! > > Thanks, > Jon Richards > > [image: Drawing showing 4(intputs) x 250M samples/sec x 8bits/sample > (4r/4i) = 8Gb/sec] >
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