[hpsdr] Multiple Mercury operations

[Joe Martin K5SO]

Hi Dan,

No, absolutely not!  Don't use it for multiple receivers on a single  
Mercury.

The GPIO pins 2-3 jumper, if it is present, tells the code in the  
Mercury FPGA that more than one Mercury is on the bus and so only  
output one IQ stream for each Mercury.  If you want more than one IQ  
stream from each Mercury, as you do if you run multiple receivers on a  
single Mercury, you must not jumper GPIO pins 2-3.

73,  Joe  K5SO


On Nov 9, 2011, at 6:07 PM, Dan Mitchell wrote:

> Joe;
> Is the jumper necessary when using multiple receivers on ONE Mercury?
> 73,
> Dan, W0IQ
>
> -----Original Message-----
> From: hpsdr-bounces at lists.openhpsdr.org
> [mailto:hpsdr-bounces at lists.openhpsdr.org] On Behalf Of Joe Martin  
> K5SO
> Sent: Wednesday, November 09, 2011 4:16 PM
> To: HPSDR list
> Subject: [hpsdr] Multiple Mercury operations
>
> ***** High Performance Software Defined Radio Discussion List *****
>
>
> All,
>
> It is necessary with the new set of firmware that a jumper be placed
> across GPIO pins 2-3 (header J5 on Mercury).  Photos of the
> appropriate jumpers on Mercury J5 for multiple-Mercury operations are
> shown at
>
> http://www.k5so.com/Clock%20connections.html
>
> This jumper was not required before for multiple Mercury operation but
> it is required with the new firmware set.
>
> 73,  Joe K5SO
>
>
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