[hpsdr] Fw: Re Ozy Problem

[Scott Cowling]

Hi Bob,

We ordered all C8 parts. I seem to remember that we had trouble 
getting all of them form one supplier, so it is possible that some C7 
parts were substituted.

This was 2 years ago, and I have trouble remembering what I had for 
lunch yesterday. :-)

I will go back and check the parts receiver slips to try and 
determine how many were made with each speed grade.

It seems doubtful that the C7 speed grade would be required by the 
code, given what the Ozy FPGA is doing. However, this is a clue as to 
what is happening that can be used to try to debug the problem.

73,
Scotty WA2DFI

At 20:31 2009-06-03 -0400, you wrote:
>***** High Performance Software Defined Radio Discussion List *****
>
>Scotty
>
>        I have two Ozy brds here.Both were ordered from Tapr.I have 
> one brd with C8 version and the second has the C7 version.The C7 
> version works for me.The C8 version does not.
>
>                                        73 Bob ve3gkm
>----- Original Message ----- From: "Scott Cowling" <scotty at tonks.com>
>To: <hpsdr at lists.openhpsdr.org>
>Sent: Wednesday, June 03, 2009 8:13 PM
>Subject: Re: [hpsdr] Re Ozy Problem
>
>
>>***** High Performance Software Defined Radio Discussion List *****
>>
>>All TAPR manufactured Ozy boards used the C8 speed grade.
>>
>>The full Altera part number is EP2C8Q208C8N.
>>
>>73,
>>Scotty WA2DFI
>>
>>
>>
>>At 23:25 2009-06-03 +0000, ke9h at austin.rr.com wrote:
>>>***** High Performance Software Defined Radio Discussion List *****
>>>
>>>All:
>>>Would anyone else having the chattering relay and or
>>>audio holes/gaps problem,
>>>with the updated software please comment as to
>>>whether you have the C7N or C8N version of the FPGA on your Ozy.
>>>--- Graham
>>>
>>>
>>> >
>>> >
>>> > For reference, a C7N part is faster than a C8N part.
>>> >
>>> > -Ray WB6TPU
>>> >
>>>
>>> > >
>>> > > Bob:
>>> > >
>>> > > Would you please let us know what the last three characters
>>> > > are on the part number for the large Cyclone-II FPGA IC
>>> > > on your Ozys.  Is it the same for both ICs?
>>> > >
>>> > > The last three characters should be C7N or C8N
>>> > > example:   EP2C8Q208C7N
>>> > >
>>> > > The number 7 or 8 is the speed grade of the parts.
>>> > >
>>> > > Thanks,
>>> > > --- Graham
>>> > >
>>> >
>>>
>>>_______________________________________________
>>>HPSDR Discussion List
>>>To post msg: hpsdr at openhpsdr.org
>>>Subscription help: 
>>>http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org
>>>HPSDR web page: http://openhpsdr.org
>>>Archives: http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/
>>
>>
>>_______________________________________________
>>HPSDR Discussion List
>>To post msg: hpsdr at openhpsdr.org
>>Subscription help: 
>>http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org
>>HPSDR web page: http://openhpsdr.org
>>Archives: http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/
>
>_______________________________________________
>HPSDR Discussion List
>To post msg: hpsdr at openhpsdr.org
>Subscription help: http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org
>HPSDR web page: http://openhpsdr.org
>Archives: http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/



 1244077415.0