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:[email protected]
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..)
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