Note that the design Dan is referring to currently has only been tested to ~1.5 GHz BW. Getting to higher bandwidths will likely require some work to meet timing. Also the data comes out over 10 gigabit Ethernet so requires something to catch the data.
On Tue, Feb 12, 2013 at 4:02 PM, Dan Werthimer <d...@ssl.berkeley.edu> wrote: > > hi ross, > > how many frequency channels do you need in your two input correlator? > > we have a full stokes VEGAS 1K channel spectrometer design > that uses a pair of ADC08-5000's. > (a full stokes spectrometer is the same thing as a two input correlator) > > our current design is for roach2, but we had tested working designs > for roach1 last year, and we can probably dig these up. > > best wishes, > > dan > > > On Tue, Feb 12, 2013 at 12:53 PM, Ross Williamson > <rwilliam...@astro.caltech.edu> wrote: >> >> Hi All, >> >> I'm new to CASPER/ROACH boards and so apologies if this is obvious. We >> are hoping to build a simple 2-channel correlator with a fairly high >> bandwidth. We are in the process of ordering a ROACH-1 board and I was >> thinking of also purchasing the ADC1X5000-8 ADC - A few questions: >> >> 1) Should I even be looking at an ADC1X5000-8 for use as a correlator? >> 2) I believe I need the DMUX 1:2 version to work with ROACH-1 board - is >> that correct? >> 3) I should be able to run 2 channels at 2.5GHz 4bits with a single board >> - correct? >> 4) If I wanted to could I purchase another ADC1X5000-8 and try and run >> with 5GHz bandwidth on each channel using the ROACH-1? >> >> Best regards, >> >> Ross >> >> -- >> Ross Williamson >> Research Scientist - Sub-mm Group >> California Institute of Technology >> 626-395-2647 (office) >> 312-504-3051 (Cell) > >
