Re: [casper] ROACH Spectrometer info

Um, AFAIK, tut3 has a bug in the cast/reinterpret after the FFT or in the VACC which prevents decent SNR, but otherwise is functional. Jason On 06 Nov 2009, at 10:43, Danny Price wrote: Hi All, Does anyone have any further documentation for the ROACH spectrometers in the SVN, or the tut 3

[casper] ROACH Spectrometer info

Hi All, Does anyone have any further documentation for the ROACH spectrometers in the SVN, or the tut 3 spectrometer? Cheers Danny

Re: [casper] ROACH spectrometer

Andrew Siemion wrote: >William Mallard wrote: >>Tom Kuiper wrote: >>>Does anyone have a feeling for how many 32,768 channel 1 GHz wide >>>spectrometers (or 65536 channel 2 GHz spectrometers) could be >>>implemented on a ROACH? >> >>I'm already working on a 3GHz FX correlator, so i forked it, >>trun

Re: [casper] ROACH spectrometer

Tom Kuiper wrote: >Does anyone have a feeling for how many 32,768 channel 1 GHz wide >spectrometers (or 65536 channel 2 GHz spectrometers) could be >implemented on a ROACH? I'm already working on a 3GHz FX correlator, so i forked it, truncated it at the end of the F engine, dropped the PFB FIR, re

Re: [casper] ROACH spectrometer

Dan Werthimer wrote: we haven't tried this, but it would be pretty easy to change an existing design, compile it and see if it fits. If I get less busy maybe I can team up with someone to try it. i'm guessing two 1 GHz spectrometers, and one 2 GHz spectrometer. That was my guess too so I

Re: [casper] ROACH spectrometer

hi tom, we haven't tried this, but it would be pretty easy to change an existing design, compile it and see if it fits. i'm guessing two 1 GHz spectrometers, and one 2 GHz spectrometer. but it will be a tight squeeze. dan Tom Kuiper wrote: Does anyone have a feeling for how many 32,768 cha

[casper] ROACH spectrometer

Does anyone have a feeling for how many 32,768 channel 1 GHz wide spectrometers (or 65536 channel 2 GHz spectrometers) could be implemented on a ROACH? Thanks Tom