[hpsdr] Mercury V2.9 available

[Phil Harman]

Hi Joe,

Reply in your original email below.

73's Phil...VK6APH

>
> Mercury V2.9 loaded and running.  Mercury LED 3 (122.88 MHz lock) is
> lit but Mercury LED 4 (10 MHz lock) is unlit regardless of whether I
> use Excalibur C16/bus  source or a direct coaxial connection from the
> output BNC port on Excalibur to the J8 Aux Clk FPGA input on Mercury.

You need to use a 3.3v square wave to drive the AUX_CLK input on Mercury.

>
> Performace:  With Excalibur C16/bus as the 10 MHz source (Rb std 10
> MHz osc input to Excalibur) frequency accuracy is within 1 Hz on all
> bands but with direct 10MHz signal from the output connector of
> Excalibur to the Mercury J8 pins frequency accuracy is degraded to
> 30-70 Hz depending upon the band.
>

Are you feeding a 3.3v squareware to J8?


> I do have the 10 MHz module power jumper removed on Mercury to disable
> the on board 10 MHz osc.  However, I have not seen that there is an
> equivalent jumper on Penelope to disconnect power the 10 MHz osc
> module similarly.
>

I only have a prototype Penny board but I think we added a 0 ohm resistor 
that
could be removed on the production boards.


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