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Looking for ~100MSs 2 channels DAQ board, 70MHz IF, ...

Started by christophe grimault September 17, 2004
Hi,

I'm looking for a DAQ (digitizing board) on PCI, with 2 (or 4) channels. 
The sampling rate should
be around 100 MS/s max with a least 50 MHz bandpass. The board shall 
have tens to hundreds of Mb
of RAM to acquire a few seconds of signal in one shot. Then download to 
a PC for further processing.
The input shall be at IF of 70 MHz and the board shall do preferably IQ 
sampling. A plus would be a low-pass filtering with decimation to select 
a signal of given bandwidth. This last item allows to acquire more 
signal for the same amount of on-board memory.

There are a few boards on the market (gage, agilent, acquiris, pentek, 
acuisition logic, ultraview) doing some of these items, but not all of 
them.

May be my searches on google did not gave me all the pointers. Any new 
pointers are welcome.
Also, a few months ago I came across a company providing such a board 
(from canada, but i 'm not sure), but I can't remember its name !

Any help would be greatly appreciated.

CG

Christophe,

We also have a board that does some of what you're looking for, see
http://www.bittware.com/products/PMC/BCPM/bcpm_desc.stm

Note that it's a PMC (like many of the boards you'll find for this type of
stuff), so if you want to put it in a desktop PCI slot you'll need a PMC to
PCI adaptor, which are relatively cheap and plentiful..

I'm guessing the Canadian company you're referring to is ICS at
http://www.ics-ltd.com/

As you noted, there are a few boards out there with some of what you want.
Be careful in how they achieve their 100 MS/sec (one combines two 50 MS ADCs
to get it) and whether they can actually store large amounts of samples at
full speeds.  For example, our board can store 256 MSamples (using a 512MB
sdram), but at 105 MS/sec, we can only keep up to one channel due to memory
bandwidth requirements.  We can run both channels at about 75 MS/sec and
store it all. Or we can put it on one of our TigerSharc boards, run the data
directly over TigerSHARC link ports, and the Tiger board can keep up to full
speed on two channels - plus you'd get some TigerSHARCs to do some
processing if you'd like :-)

Not sure what your volumes are or the application, but you'll also find a
large price differential between some boards, based on what they provide,
and their intended application and market.

Also, some of them have onboard digital down converters (Pentek, ICS) that
you indicate may be useful.  Ours (as some of the others) has a large
onboard FPGA (Virtex II 1000) with room for customization, such as
decimation and filtering.

Good luck in your search.

------
Ron Huizen
BittWare


"christophe grimault" <christophe.grimault@novagrid.com> wrote in message
news:414AB7F3.1050907@novagrid.com...
> Hi, > > I'm looking for a DAQ (digitizing board) on PCI, with 2 (or 4) channels. > The sampling rate should > be around 100 MS/s max with a least 50 MHz bandpass. The board shall > have tens to hundreds of Mb > of RAM to acquire a few seconds of signal in one shot. Then download to > a PC for further processing. > The input shall be at IF of 70 MHz and the board shall do preferably IQ > sampling. A plus would be a low-pass filtering with decimation to select > a signal of given bandwidth. This last item allows to acquire more > signal for the same amount of on-board memory. > > There are a few boards on the market (gage, agilent, acquiris, pentek, > acuisition logic, ultraview) doing some of these items, but not all of > them. > > May be my searches on google did not gave me all the pointers. Any new > pointers are welcome. > Also, a few months ago I came across a company providing such a board > (from canada, but i 'm not sure), but I can't remember its name ! > > Any help would be greatly appreciated. > > CG >
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Thanks fo your interesting answer !

Looking at the datasheet, your board looks interesting to me. I 'll 
study it more deeply in the next few days. And I will have some 
questions... in fact I already have one ! Can I connect directly the 70 
MHz output of my down-converter to catch a signal of, say, 3 MHz bandwidth ?

Thanks again

CG

Ron Huizen wrote:

>Christophe, > >We also have a board that does some of what you're looking for, see >http://www.bittware.com/products/PMC/BCPM/bcpm_desc.stm > >Note that it's a PMC (like many of the boards you'll find for this type of >stuff), so if you want to put it in a desktop PCI slot you'll need a PMC to >PCI adaptor, which are relatively cheap and plentiful.. > >I'm guessing the Canadian company you're referring to is ICS at >http://www.ics-ltd.com/ > >As you noted, there are a few boards out there with some of what you want. >Be careful in how they achieve their 100 MS/sec (one combines two 50 MS ADCs >to get it) and whether they can actually store large amounts of samples at >full speeds. For example, our board can store 256 MSamples (using a 512MB >sdram), but at 105 MS/sec, we can only keep up to one channel due to memory >bandwidth requirements. We can run both channels at about 75 MS/sec and >store it all. Or we can put it on one of our TigerSharc boards, run the data >directly over TigerSHARC link ports, and the Tiger board can keep up to full >speed on two channels - plus you'd get some TigerSHARCs to do some >processing if you'd like :-) > >Not sure what your volumes are or the application, but you'll also find a >large price differential between some boards, based on what they provide, >and their intended application and market. > >Also, some of them have onboard digital down converters (Pentek, ICS) that >you indicate may be useful. Ours (as some of the others) has a large >onboard FPGA (Virtex II 1000) with room for customization, such as >decimation and filtering. > >Good luck in your search. > >------ >Ron Huizen >BittWare > > >"christophe grimault" <christophe.grimault@novagrid.com> wrote in message >news:414AB7F3.1050907@novagrid.com... > > >>Hi, >> >>I'm looking for a DAQ (digitizing board) on PCI, with 2 (or 4) channels. >>The sampling rate should >>be around 100 MS/s max with a least 50 MHz bandpass. The board shall >>have tens to hundreds of Mb >>of RAM to acquire a few seconds of signal in one shot. Then download to >>a PC for further processing. >>The input shall be at IF of 70 MHz and the board shall do preferably IQ >>sampling. A plus would be a low-pass filtering with decimation to select >>a signal of given bandwidth. This last item allows to acquire more >>signal for the same amount of on-board memory. >> >>There are a few boards on the market (gage, agilent, acquiris, pentek, >>acuisition logic, ultraview) doing some of these items, but not all of >>them. >> >>May be my searches on google did not gave me all the pointers. Any new >>pointers are welcome. >>Also, a few months ago I came across a company providing such a board >>(from canada, but i 'm not sure), but I can't remember its name ! >> >>Any help would be greatly appreciated. >> >>CG >> >> >> > > > >
--------------080405070805060703030108 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title></title> </head> <body> Thanks fo your interesting answer !<br> <br> Looking at the datasheet, your board looks interesting to me. I 'll study it more deeply in the next few days. And I will have some questions... in fact I already have one ! Can I connect directly the 70 MHz output of my down-converter to catch a signal of, say, 3 MHz bandwidth ?<br> <br> Thanks again<br> <br> CG<br> <br> Ron Huizen wrote:<br> <blockquote type="cite" cite="mid10klngml3ap419f@corp.supernews.com"> <pre wrap="">Christophe, We also have a board that does some of what you're looking for, see <a class="moz-txt-link-freetext" href="http://www.bittware.com/products/PMC/BCPM/bcpm_desc.stm">http://www.bittware.com/products/PMC/BCPM/bcpm_desc.stm</a> Note that it's a PMC (like many of the boards you'll find for this type of stuff), so if you want to put it in a desktop PCI slot you'll need a PMC to PCI adaptor, which are relatively cheap and plentiful.. I'm guessing the Canadian company you're referring to is ICS at <a class="moz-txt-link-freetext" href="http://www.ics-ltd.com/">http://www.ics-ltd.com/</a> As you noted, there are a few boards out there with some of what you want. Be careful in how they achieve their 100 MS/sec (one combines two 50 MS ADCs to get it) and whether they can actually store large amounts of samples at full speeds. For example, our board can store 256 MSamples (using a 512MB sdram), but at 105 MS/sec, we can only keep up to one channel due to memory bandwidth requirements. We can run both channels at about 75 MS/sec and store it all. Or we can put it on one of our TigerSharc boards, run the data directly over TigerSHARC link ports, and the Tiger board can keep up to full speed on two channels - plus you'd get some TigerSHARCs to do some processing if you'd like :-) Not sure what your volumes are or the application, but you'll also find a large price differential between some boards, based on what they provide, and their intended application and market. Also, some of them have onboard digital down converters (Pentek, ICS) that you indicate may be useful. Ours (as some of the others) has a large onboard FPGA (Virtex II 1000) with room for customization, such as decimation and filtering. Good luck in your search. ------ Ron Huizen BittWare "christophe grimault" <a class="moz-txt-link-rfc2396E" href="mailto:christophe.grimault@novagrid.com">&lt;christophe.grimault@novagrid.com&gt;</a> wrote in message <a class="moz-txt-link-freetext" href="news:414AB7F3.1050907@novagrid.com">news:414AB7F3.1050907@novagrid.com</a>... </pre> <blockquote type="cite"> <pre wrap="">Hi, I'm looking for a DAQ (digitizing board) on PCI, with 2 (or 4) channels. The sampling rate should be around 100 MS/s max with a least 50 MHz bandpass. The board shall have tens to hundreds of Mb of RAM to acquire a few seconds of signal in one shot. Then download to a PC for further processing. The input shall be at IF of 70 MHz and the board shall do preferably IQ sampling. A plus would be a low-pass filtering with decimation to select a signal of given bandwidth. This last item allows to acquire more signal for the same amount of on-board memory. There are a few boards on the market (gage, agilent, acquiris, pentek, acuisition logic, ultraview) doing some of these items, but not all of them. May be my searches on google did not gave me all the pointers. Any new pointers are welcome. Also, a few months ago I came across a company providing such a board (from canada, but i 'm not sure), but I can't remember its name ! Any help would be greatly appreciated. CG </pre> </blockquote> <pre wrap=""><!----> </pre> </blockquote> <br> </body> </html> --------------080405070805060703030108--