[hpsdr] MOX bit in C0 for Penelope

[David McQuate]

Because the MOX bit only controls the PTT Out, which is typically used 
for antenna or amplifier bias switching, is separate from the I&Q data 
control of the DAC output, it is possible, in software, to control the 
sequence of events.  Thus, RF output can be delayed until the antenna 
relay has completed its movement, or the amplifier bias has become stable.
Dave
wa8ywq

John Melton wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> I believe the MOX bit drives the PTT Out signal on Penelope for use with
> external amplifiers such as PennyWhistle.
>
> -- John g0orx/n6lyt
>
> On Thu, 2010-12-23 at 06:29 -0800, Jeremy McDermond wrote:
>   
>> ***** High Performance Software Defined Radio Discussion List *****
>>
>> On Dec 23, 2010, at 6:25 AM, wully wrote:
>>
>>     
>>> Can anyone tell, why the MOX-bit does not switch TX-Power on and off, as expected?
>>>       
>> Phil has told me in the past that the MOX bit does not inhibit the DAC from producing output.  In order to inhibit transmission you need to not only toggle the MOX bit to off, but also feed zero I/Q samples to Penelope.
>>
>>     
>>> Thanks in advance
>>>       
>> --
>> Jeremy McDermond (NH6Z)
>> Xenotropic Systems
>> mcdermj at xenotropic.com
>>
>>
>>
>> _______________________________________________
>> 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/
>
>
>   

 1293126790.0