Re: [Discuss-gnuradio] Hardware extending

[Farhad Abdolian]

Hi,

I would be careful buying components from E=bay for anything other than simple prototypes. These components maybe cheap on e-bay but if you are serious on making this a working design, you may end up spending more time dealing with ESD damaged products, or those you can not replace in the future.

It can be worth spending a bit more (or even ask for free samples if you work for a large company) than saving a few $s during the initial design.

Just my 2c learned from previous mistakes,

Farhad

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From: Tomas D. <address@hidden>
To: address@hidden
Sent: Sunday, July 24, 2011 7:58 PM
Subject: Re: [Discuss-gnuradio] Hardware extending

Hello,
> Hey Tomas,
>
> I would suggest you look the other way, you have these Xilinx/Altera
> boards with FMC/HSMC connectors (that's fixed, i meant xilinx sticks
> to FMC and so is Altera to HSMC).
>
> browse through links
>
> http://tinyurl.com/3hd4k2u
> http://tinyurl.com/3lw7ad3
thanks for links, will check them.
> Developing a Radio card (similar to lyrtech) (for both FMC and HSMC,
> AMC (OBSAI/CPRI) ) interface i think would attract lot more HW
> developers and has better reach. HW developers please pour in your
> thoughts. browse through their RF quick start kit for more idea.
Exactly this is my idea. The PCB routing using either FMC or HSMC is not a big deal. Even if we could set the standard for the connector used by the FPGA developers community, then it would be easy to develop HSMC->FMC or FMC->HSMC connector board. The question is if we could just copy the USRP(2) hardware to the FMC/HSMC board or use other ADC/DAC devices? I am not sure why such particular hardware was selected for USRP, but it is possible to buy better for the same price. Ok, I may exclude TxDAC+ from AD, which has some more advantages over a simple DAC, but that's it. I've just purchased DAC3283 (16bit/800MSPS) from eBay: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=170641966771&ssPageName=STRK:MEWNX:IT, so I will try its performance later.

Sincerely,
Tomas D.




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