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From: =?UTF-8?Q?Wolfgang_B=c3=bcscher?= <dl4yhf@freenet.de>
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Date: Tue, 25 Oct 2016 12:21:43 +0200
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Subject: Re: LF: Idiot's guide to receiving Ebnaut? - Tutorial part2
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Hi Chris,

Whow, that's a nice "mass grave" of logic ICs !
- yes of course, you can use the 1 Hz output. If it has a 50 % duty 
cycle, it will look just like a 500 ms long sync pulse to the software.
In that case, the automatic polarity detection may have to be turned off 
(SL tries to find out if the soundcard inverts the signal, to lock in on 
the significant edge. This is only possible if the duty cycle isn't 50 %).

Another way, which would be even simpler, is to use the divider's 
programmable output, set somewhere below the half sampling rate of the 
soundcard. You can use that signal like any of the other 'reference' 
signals listed in the manual, like 10 kHz, etc (the reference can be 
entered freely).

All the best,
   Wolf DL4YHF .

Am 25.10.2016 um 09:13 schrieb Chris Wilson:
> Hello Wolfgang,
>
> Monday, October 24, 2016
>
> Probably  a naive question, but I have a divider board connected to my
> Trimble Thunderbolt 10MHz output, details in this link to a PDF:
>
> http://www.perdrix.co.uk/FrequencyDivider/Frequency%20Divider%202.1.pdf
>
>
> Is  it  possible  to  use  the  1Hz output from the divider instead of
> widening the 1PPS output? Thanks.
>
>
> Best regards,
>   Chris  2E0ILY                          mailto:chris@chriswilson.tv
>
>
>> Hello Jim,
>> I still wonder why the sync pulses from the Thunderbolt E are so
>> short - you mentioned 10 us in your email, but what is the exact
>> pulse length ? With a slightly modified software (SL) it may be
>> possible to use them as they are.. if they are longer than a sample  from the soundcard.
>> 73,
>>     Wolf DL4YHF
>>    (not QRV on LF+MF unfortunately..)
>
>