Message-ID: <4F283853.8080904@iup.uni-heidelberg.de>
Date: Tue, 31 Jan 2012 19:52:03 +0100
From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= <Stefan.Schaefer@iup.uni-heidelberg.de>
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Subject: Re: LF: WOLF Monkey Business
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OK Wolf, thanks for the explanation.
I also read that is is possible to rectify the audio signal and LPF it. 
Then it is a H and L signal that can be applied to the toggle XOR gate. 
But how can i force the gui program to do that? In the DOS program it is 
done with this K paramater that must be enabled or so. But is there a 
chance to do it in the gui program? The program should then send a tone 
for H and no-tone for L.
And is there a chance to implement this mode in SpecLab? :-) Then, the 
samplerate drift and offset problems would be history and we could even 
choose a very narrow frequency offset limit :-)

73, Stefan/DK7FC

PS: PA works again...

Am 31.01.2012 17:45, schrieb wolf_dl4yhf:
> Hi Stefan,
>
>
>> So the question is if i can use the WOLF gui program to get what i 
>> want? Some things can be changed in the config file but don't know 
>> how i can get the RS232 to generate the toggle signal for the phase 
>> shift :-/
>>
>
> Simple: You cannot drive the RS-232 with the WOLF user interface. 
> Producing a precisely timed digital signal which isn't (by 
> coincidence) a multiple of the serial port's baudrate is almost 
> impossible with windoze. Reason: Windows uses buffering between the 
> application and the ports hardware. Sending a byte to the serial port 
> API doesn't mean it is placed in the UART's transmit shift register. 
> It may get there in a microsecond, or in a millisecond, or even dozens 
> of milliseconds later. Thus the RS-232 port can only be used for RX/TX 
> switching, but not for the digital modulation itself (at least not 
> without an extra hardware; PIC etc etc).
>
> Cheers,
>   Wolf .
>

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OK Wolf, thanks for the explanation. <br>
I also read that is is possible to rectify the audio signal and LPF it.
Then it is a H and L signal that can be applied to the toggle XOR gate.
But how can i force the gui program to do that? In the DOS program it
is done with this K paramater that must be enabled or so. But is there
a chance to do it in the gui program? The program should then send a
tone for H and no-tone for L.<br>
And is there a chance to implement this mode in SpecLab? :-) Then, the
samplerate drift and offset problems would be history and we could even
choose a very narrow frequency offset limit :-)<br>
<br>
73, Stefan/DK7FC<br>
<br>
PS: PA works again...<br>
<br>
Am 31.01.2012 17:45, schrieb wolf_dl4yhf:
<blockquote cite="mid:4F281AA9.1090602@freenet.de" type="cite">
  <meta content="text/html; charset=ISO-8859-1"
 http-equiv="Content-Type">
Hi Stefan,<br>
  <br>
  <br>
  <blockquote cite="mid:4F280D54.4090701@iup.uni-heidelberg.de"
 type="cite">
    <p><font color="#cc0000"><font color="#330033"> So the question is
if i can use the WOLF gui program to get what i want? Some things can
be changed in the config file but don't know how i can get the RS232 to
generate the toggle signal for the phase shift :-/<br>
    </font></font></p>
  </blockquote>
  <br>
Simple: You cannot drive the RS-232 with the WOLF user interface.
Producing a precisely timed digital signal which isn't (by coincidence)
a multiple of the serial port's baudrate is almost impossible with
windoze. Reason: Windows uses buffering between the application and the
ports hardware. Sending a byte to the serial port API doesn't mean it
is placed in the UART's transmit shift register. It may get there in a
microsecond, or in a millisecond, or even dozens of milliseconds later.
Thus the RS-232 port can only be used for RX/TX switching, but not for
the digital modulation itself (at least not without an extra hardware;
PIC etc etc).<br>
  <br>
Cheers,<br>
&nbsp; Wolf .<br>
  <br>
</blockquote>
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