[hpsdr] Mercury V2.9 Question- Mercury clock

[David McQuate]

I've added a bit of "wire-wrap" wire to Mercury between the upper end of 
R37 and
the upper pin of Mercury's J8, "AUXCLK".  The insulated wire just fits 
through the via
just to the left of J8.  I do see a 3.3Vpp square wave on the upper pin 
of J8.

In KK, version 1.0.6, in file Setupform.cs
about line 649, in the function chkExcalibur_Changed,
in the last section, which has comment header

  // update the Mainform with the current settings

I added the line --
 MainForm.Excalibur = chkExcalibur.Checked;

This lets Form1.cs know that Excalibur was checked.
It also allows this selection to be remembered when
Setupform is opened again, and also to have the
selection stored in KK.csv.

Using Mercury FPGA code V2.9, I see Mercury LED D3 lit, but not D4.

73,
Dave / WA8YWQ

Phil Harman wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Hi Bruce,
>
> That connection point should be just fine.  Make sure you use 
> anti-static precautions when you run the wire to C16.
>
> Phil...VK6APH
>
>
> ----- Original Message ----- From: "Bruce Beford" 
> <bruce.beford at myfairpoint.net>
> To: <hpsdr at lists.openhpsdr.org>
> Sent: Sunday, November 22, 2009 8:32 PM
> Subject: Re: [hpsdr] Mercury V2.9 Question- Mercury clock
>
>
>> ***** High Performance Software Defined Radio Discussion List *****
>>
>> D18 and R37 are present on my TAPR production Mercury board. So this 
>> point
>> should be good for the new clock source for J8?
>>
>> -Bruce N1RX
>>
>>
>>> Hi Dave,
>>>
>>> Perhaps you could check if these parts are actually fitted to 
>>> production
>>> oards since I remember there was concern regarding their effect of the
>> rise
>>> time of the 10MHz clock from C16.
>>>
>>> 73's Phil.... VK6APH
>>
>>
>> ----- Original Message ----- From: "David McQuate" <mcquate at 
>> sonic.net>
>> To: <hpsdr at openhpsdr.org>
>> Sent: Sunday, November 22, 2009 1:06 PM
>> Subject: Re: [hpsdr] Mercury V2.9 Question
>>
>>
>>> ***** High Performance Software Defined Radio Discussion List *****
>>>
>>> It looks like a better way to make the connection between Mercury's J8
>>> "Aux_Clk"
>>> and Atlas C16 would be to connect from J8 to the common terminal of 
>>> D18,
>>> or the
>>> end of R37 connected to D18.  This way the FPGA input CLK15 is given 
>>> the
>>> same
>>> protection as the input originally connected to Atlas C16.
>>>
>>> Dave / WA8YWQ
>>
>>
>

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