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| To: | [email protected] |
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| Subject: | Re: LF: Version 0.9b vlfrx-tools |
| From: | DK7FC <[email protected]> |
| Date: | Sun, 20 May 2018 20:42:52 +0200 |
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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 --
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