Re: LF: Version 0.9b vlfrx-tools

[DK7FC <selberdenken@posteo.de>]

On a rainy day i learned more about GNU-plot. It was necessary to 
display the y-axis for the spectrum peak in dB now.
There were 17 short interruptions of the stream within one day. I will 
find out where this comes from. But the interruptions are very short.
The spectrum peak in 11.6 uHz still looks ultra-sharp, see attachment. 
I'm satisfied :-)
73, Stefan

Am 20.05.2018 06:03, schrieb Paul Nicholson:
> I'm pleased to see that vttime -m edge+ is doing its job, it
> hasn't had a lot of testing.   Also, using -m pulse+ on a
> university installation and it is running mostly at less
> than 20nS jitter on a 10uS pulse at 96k/sec, albeit on a
> posh looking GPS.
>
> > vttime: unreliable PPS interval 47999.959405 - skipped
> > vttime: wild PPS pulse interval 32425.608608 - skipped
> > vttime: invalid phase slope - skipped
>
> The NMEA messages shouldn't get in the way, vttime only looks
> at a narrow window containing the leading PPS edge and the
> NMEA will be coming in well after that.
>
> vttime has got better at recognising bad pulses and ignoring
> them. it will hold-over quite happily on missing or damaged
> GPS pulses.
>
> --
> Paul Nicholson
> --

1570_24h.png
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