Re: [casper] RA Instruments using CASPER hardware and tools

NARIT (National Astronomical Research Institute of Thailand) has a SKARAB+ADC4x3Gsps installed at TNRT (Thai National Radio Telescope).  Development is in progress to use it for a variety of purposes including spectrometer, packetizer, and PFB channelizer. -Spiro On Wed, 2022-08-31 at 12:53

Re: [casper] RA Instruments using CASPER hardware and tools

Ciao Morag, Not Radio Astronomy, but RADAR this time - FORT (FMCW Optical Radar Tracker) uses ROACH2 and a version of the CASPER Tools. Mike Movius ran this project - check out my old company https://www.reutechradar.com/products/defence/tracking-radar. Con calore, Adam On Wed, Aug 31, 2022

Re: [casper] RA Instruments using CASPER hardware and tools {External}

Also we created a clone of Guppi, called Wuppi, for West Virginia ultimate pulsar processor instrument. processor that had a few publications, including this one. This one was running at the old NRAO 140ft in Green Bank. > 2012ApJ...760...64M2012/11 > cited: 58 > quick access to full text

Re: [casper] RA Instruments using CASPER hardware and tools

Hi Morag, Please add the SARDARA (Sardinia Roach2-based Digital Architecture for Radio Astronomy) platform. Details here: SArdinia Roach2-based Digital Architecture for Radio Astronomy (SARDARA) | Journal of Astronomical Instrumentation (worldscientific.com)

Re: [casper] RA Instruments using CASPER hardware and tools

Among current instruments, please do add: Long Wavelength Array Sevilleta (ROACH2) and VLA North Arm (SNAP-2) sites (LWA/SV, LWA/NA). LEDA is a past instrument. I decommissioned it in Feb. 2020. (ROACH2 & ADC16-250/RJ45) Cosmic Dawn Telescope pathfinder (CDT-pathfinder) is in development.

Re: [casper] RA Instruments using CASPER hardware and tools

On that note, the COMAP system at OVRO also uses ROACH2s. On Wed, 31 Aug 2022 at 07:37, Vikram Ravi wrote: > DSA-110 at the Owens Valley Radio Observatory (OVRO) uses 40 SNAP-1 boards > for its f-engine, and the STARE-2 all-sky FRB project also uses a SNAP at > each site. The SPRITE instrument

Re: [casper] RA Instruments using CASPER hardware and tools

Hey all! We've decided to extend this to any instruments being planned/currently in development using CASPER stuff. So if that's you, lemme know! Ciao ciao! Morag On Wed, Aug 31, 2022 at 4:37 PM Vikram Ravi wrote: > DSA-110 at the Owens Valley Radio Observatory (OVRO) uses 40 SNAP-1 boards >

Re: [casper] RA Instruments using CASPER hardware and tools

DSA-110 at the Owens Valley Radio Observatory (OVRO) uses 40 SNAP-1 boards for its f-engine, and the STARE-2 all-sky FRB project also uses a SNAP at each site. The SPRITE instrument at OVRO, which is resurrecting a few 10.4m Leighton dishes, is also using CASPER hardware/toolfllow in multiple

Re: [casper] RA Instruments using CASPER hardware and tools

Hi Morag, The MPIfR operates two generations of pulsar instruments powered by CASPER: PSRIX based on iADC+ROACH1 and PSRIX2 with four ROACH2s each with two ADC5Gs. Cheers, Ramesh > On 31. Aug 2022, at 12:53, Morag Brown wrote: > > Ciao dalla Sardegna, collaborati! > > I'm hoping to put

Re: [casper] Question of 'PCORE'、'Share_BRAM' and 'Subsystem' block

Hi Morag and Dave， Morag, I would like to thank you for your detailed explanation of my questions. I have gained a lot! Thank you Dave. I didn't understand EQ at first, but your explanation helped me. Also thank you for your PAPER correlator file, which is very helpful to me. Cheers， Wang

Re: [casper] RA Instruments using CASPER hardware and tools {External}

Thanks Jason and Scott. And yes, Scott, you are correct about how CASPER should be CASPSR - I was hit by autocorrect and was hoping no one would notice ;) On Wed, Aug 31, 2022 at 4:22 PM Scott Ransom wrote: > A couple other minor corrections: > > It is GUPPI not "GUPPY". And there was also

Re: [casper] RA Instruments using CASPER hardware and tools {External}

A couple other minor corrections: It is GUPPI not "GUPPY". And there was also PUPPI at Arecibo. And Maybe CASPER was supposed to be CASPSR? Scott On 8/31/22 9:59 AM, David Harold Edward MacMahon wrote: SERENDIP VI and Alfaburst were spectrometers that used CASPER hardware.  It may be more

Re: [casper] RA Instruments using CASPER hardware and tools

Also, the “Infrared Spatial Interferometer” (ISI) project started by the late :( Charles Townes uses CASPER hardware. > On Aug 31, 2022, at 3:59 PM, David Harold Edward MacMahon > wrote: > > SERENDIP VI and Alfaburst were spectrometers that used CASPER hardware. It > may be more correct to

Re: [casper] RA Instruments using CASPER hardware and tools

Another LMT Instrument using CASPER hardware is WARES - Wideband Array ROACH enabled Spectrometer - a 32-pixel spectrometer system based on ROACH2s and ADC5Gs. Gopal On Wed, Aug 31, 2022 at 9:40 AM Sam Rowe wrote: > Ciao Morag, > > You can add MUSCAT and TolTEC (both at the LMT-50m) to the

Re: [casper] RA Instruments using CASPER hardware and tools

SERENDIP VI and Alfaburst were spectrometers that used CASPER hardware. It may be more correct to call them two backends for the same spectrometer. These ran at Arecibo. Greenburst is a version of Alfaburst that is at Green Bank. There’s also PhRInGES. Besides being a tortured (b)acronym

Re: [casper] Question of 'PCORE'、'Share_BRAM' and 'Subsystem' block

Hi, Wang, Morag is right about the mask parameter and BRAM sizing relationship. The subsystem you showed is used to provide each frequency channel with its own “equalization” coefficient. In the “round” block, I think “din” and the output of “coeffs” get multiplied together and then the 4

Re: [casper] RA Instruments using CASPER hardware and tools

Ciao Morag, You can add MUSCAT and TolTEC (both at the LMT-50m) to the list of MKID instruments that have been built using CASPER hardware and tools. Cheers, Sam On Wed, 31 Aug 2022, 11:53 Morag Brown, wrote: > *External email to Cardiff University - *Take care when replying/opening >

Re: [casper] Question of 'PCORE'、'Share_BRAM' and 'Subsystem' block

Hi Wang, It looks like that block is just a bram and it's surrounding logic that's been wrapped up as a subsystem to make things a bit easier/neater? See here for details on subsystems in simulink. I guess that the "number of

[casper] RA Instruments using CASPER hardware and tools

Ciao dalla Sardegna, collaborati! I'm hoping to put together a more up-to-date list of instruments that have been built using CASPER hardware and tools. The most current list was compiled in 2016 for the "A Decade of Developing Radio-Astronomy Instrumentation using CASPER Open-Source Technology"

Re: [casper] Question of 'PCORE'、'Share_BRAM' and 'Subsystem' block

Hi Jack， Thanks for your reply. I will read this document carefully. Cheers Wang Jack Hickish 于2022年8月31日周三 16:35写道： > Hi Wang, > > If you haven't seen it already, this memo is probably useful -- > https://github.com/casper-astro/publications/blob/master/Memos/files/Black_box_memo.pdf > > The

Re: [casper] Question of 'PCORE'、'Share_BRAM' and 'Subsystem' block

Hi Wang, If you haven't seen it already, this memo is probably useful -- https://github.com/casper-astro/publications/blob/master/Memos/files/Black_box_memo.pdf The PCORE yellow block doesn't contain anything because it doesn't actually do anything in FPGA logic. All it does is tells the

Re: [casper] Question of 'PCORE'、'Share_BRAM' and 'Subsystem' block

Hi Wang, I can't answer the first question, and your third is a bit confusing. Can you send a screenshot of the block you mean? As for the shared_bram - this instantiates bram on hardware that is exposed to the axi/wishbone (depending on the hardware) bus. You can write values ( *vals*) to this