Re: [casper] casper Digest, Vol 75, Issue 8

2014-02-13 Thread Gerry Harp

Hi Dan and all

This looks very cool. There is something in the specs I don't understand:

 * Analog signal: 50 ohm single-ended configurable as three of:
 o 4 inputs at 250 Msps
 o 2 inputs at 500 Msps
 o 1 input at 1 Gsps

How many analog inputs are there to feed the ADC's? 12?

And some of them come in on the ZDOC connector? How many on board?

Sorry if the answer is obvious, I didn't find the answer myself.

Gerry



On 2/10/2014 7:58 AM, Dan Werthimer wrote:



hi tim,

there is a low power, low cost, roach like board under development,
called SNAP.  SNAP uses a kintex fpga,
has two 10Gbit ports,  some adc's and frequency synthesizer on board,
and one zdoc for external adc's.   info at:

https://casper.berkeley.edu/wiki/DAB-HERALD


best wishes,

dan





On Mon, Feb 10, 2014 at 7:20 AM, Madden, Timothy J. 
tmad...@aps.anl.gov mailto:tmad...@aps.anl.gov wrote:




Roach in a balloon

Just an idea if some engineer wants alot of work to do. One could
put a whole ROACH into a tiny circuit board these days using the
new Xilinx ZYNQ chips. It is a multi-chip module w/ high end
Xilinx and 2 ARM cores. It would of course require recompiling all
the ROACH IP for use w/  ARM. But the resulting hardware would be
small, and not use alot of power.  It would be a fun project.


Tim Madden
Argonne Lab


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Today's Topics:

   1. ROACH on a balloon? (Ben Mazin)


--

Message: 1
Date: Fri, 7 Feb 2014 11:22:20 -0800
From: Ben Mazin bma...@physics.ucsb.edu
mailto:bma...@physics.ucsb.edu
Subject: [casper] ROACH on a balloon?
To: casper@lists.berkeley.edu mailto:casper@lists.berkeley.edu
Message-ID: 1212337f-1cb2-43e6-9ed6-4e5988b90...@physics.ucsb.edu
mailto:1212337f-1cb2-43e6-9ed6-4e5988b90...@physics.ucsb.edu
Content-Type: text/plain; charset=us-ascii

Has anyone flown a ROACH board on a high altitude balloon?  Did it
work?  Did you make any engineering changes for this challenging
environment?

Thanks,
Ben
__
Ben Mazin  Phone/Fax: 805-893-3344
tel:805-893-3344
Assistant Professor http://www.physics.ucsb.edu/~bmazin/
http://www.physics.ucsb.edu/%7Ebmazin/
Department of Physics  Skype: ucsb.physics.mazin_b
University of California  Office: 2015A Broida Hall
Santa Barbara, CA 93106 USA  Lab: 3509 Broida Hall

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--
--
Gerald R. Harp, Ph.D.
Director, Center for SETI Research
SETI Institute



Re: [casper] casper Digest, Vol 75, Issue 8

2014-02-10 Thread Madden, Timothy J.


Roach in a balloon

Just an idea if some engineer wants alot of work to do. One could put a whole 
ROACH into a tiny circuit board these days using the new Xilinx ZYNQ chips. It 
is a multi-chip module w/ high end Xilinx and 2 ARM cores. It would of course 
require recompiling all the ROACH IP for use w/  ARM. But the resulting 
hardware would be small, and not use alot of power.  It would be a fun project.


Tim Madden
Argonne Lab


From: casper-boun...@lists.berkeley.edu [casper-boun...@lists.berkeley.edu] on 
behalf of casper-requ...@lists.berkeley.edu [casper-requ...@lists.berkeley.edu]
Sent: Friday, February 07, 2014 2:15 PM
To: casper@lists.berkeley.edu
Subject: casper Digest, Vol 75, Issue 8

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To subscribe or unsubscribe via the World Wide Web, visit

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You can reach the person managing the list at
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When replying, please edit your Subject line so it is more specific
than Re: Contents of casper digest...


Today's Topics:

   1. ROACH on a balloon? (Ben Mazin)


--

Message: 1
Date: Fri, 7 Feb 2014 11:22:20 -0800
From: Ben Mazin bma...@physics.ucsb.edu
Subject: [casper] ROACH on a balloon?
To: casper@lists.berkeley.edu
Message-ID: 1212337f-1cb2-43e6-9ed6-4e5988b90...@physics.ucsb.edu
Content-Type: text/plain; charset=us-ascii

Has anyone flown a ROACH board on a high altitude balloon?  Did it work?  Did 
you make any engineering changes for this challenging environment?

Thanks,
Ben
__
Ben Mazin  Phone/Fax: 805-893-3344
Assistant Professor http://www.physics.ucsb.edu/~bmazin/
Department of Physics  Skype: ucsb.physics.mazin_b
University of California  Office: 2015A Broida Hall
Santa Barbara, CA 93106 USA  Lab: 3509 Broida Hall

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Re: [casper] casper Digest, Vol 75, Issue 8

2014-02-10 Thread Dan Werthimer
hi tim,

there is a low power, low cost, roach like board under development,
called SNAP.  SNAP uses a kintex fpga,
has two 10Gbit ports,  some adc's and frequency synthesizer on board,
and one zdoc for external adc's.   info at:

https://casper.berkeley.edu/wiki/DAB-HERALD


best wishes,

dan





On Mon, Feb 10, 2014 at 7:20 AM, Madden, Timothy J. tmad...@aps.anl.govwrote:



 Roach in a balloon

 Just an idea if some engineer wants alot of work to do. One could put a
 whole ROACH into a tiny circuit board these days using the new Xilinx ZYNQ
 chips. It is a multi-chip module w/ high end Xilinx and 2 ARM cores. It
 would of course require recompiling all the ROACH IP for use w/  ARM. But
 the resulting hardware would be small, and not use alot of power.  It would
 be a fun project.


 Tim Madden
 Argonne Lab

 
 From: casper-boun...@lists.berkeley.edu [casper-boun...@lists.berkeley.edu]
 on behalf of casper-requ...@lists.berkeley.edu [
 casper-requ...@lists.berkeley.edu]
 Sent: Friday, February 07, 2014 2:15 PM
 To: casper@lists.berkeley.edu
 Subject: casper Digest, Vol 75, Issue 8

 Send casper mailing list submissions to
 casper@lists.berkeley.edu

 To subscribe or unsubscribe via the World Wide Web, visit

 https://calmail.berkeley.edu/manage/list/listinfo/casper@lists.berkeley.edu

 or, via email, send a message with subject or body 'help' to
 casper-requ...@lists.berkeley.edu

 You can reach the person managing the list at
 casper-ow...@lists.berkeley.edu

 When replying, please edit your Subject line so it is more specific
 than Re: Contents of casper digest...


 Today's Topics:

1. ROACH on a balloon? (Ben Mazin)


 --

 Message: 1
 Date: Fri, 7 Feb 2014 11:22:20 -0800
 From: Ben Mazin bma...@physics.ucsb.edu
 Subject: [casper] ROACH on a balloon?
 To: casper@lists.berkeley.edu
 Message-ID: 1212337f-1cb2-43e6-9ed6-4e5988b90...@physics.ucsb.edu
 Content-Type: text/plain; charset=us-ascii

 Has anyone flown a ROACH board on a high altitude balloon?  Did it work?
  Did you make any engineering changes for this challenging environment?

 Thanks,
 Ben
 __
 Ben Mazin  Phone/Fax: 805-893-3344
 Assistant Professor http://www.physics.ucsb.edu/~bmazin/
 Department of Physics  Skype: ucsb.physics.mazin_b
 University of California  Office: 2015A Broida Hall
 Santa Barbara, CA 93106 USA  Lab: 3509 Broida Hall

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