Problem with time in Guralp Minimus (slink2ew)

Ricardo Gabriel Sifon

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Oct 13, 2021, 1:02:58 PM10/13/21

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Hi everyone!

I have a few Guralp Minimus with a problem with its GPS.

The signal is received with seconds late.

And I can't change the GPS.

How I can stamp the correct time to the signal received? Is it possible modify the slink2ew module source coude?

Regards,

Ing. Esp. Ricardo G. Sifón

MP 4031

Departamento Laboratorio Sismológico
INPRES
Instituto Nacional de Prevención Sísmica
Roger Balet 47 Norte - CP 5400

San Juan - República Argentina
Tel. +54 (264) 4239010 int. 211

https://www.inpres.gob.ar/

Amry Priswanto

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Oct 13, 2021, 1:05:59 PM10/13/21

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I think the problem is on gps it self, if guralp system is using garmin gps, maybe the problem is same as like PSN adc that have same problem on timestamp.

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Bob Hammond

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Oct 13, 2021, 2:06:37 PM10/13/21

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See this thread for hints:

https://mail.google.com/mail/u/0/?hl=en&tab=wm&view#label/Earthworm+Forum/FMfcgxwJXfmWXMxFWcQQRwkxPVXsKMxG

To view this discussion on the web visit https://groups.google.com/d/msgid/earthworm_forum/CAEcyc-Y4jtb2Lk3pVS-bcricmpZhWEEuFXk18bMohWhaohJR3w%40mail.gmail.com.

Victor Preatoni

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Oct 14, 2021, 10:33:54 AM10/14/21

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Hola Ricardo!,

very strange problem. Are you sure the digitizer is locked to GPS clock?.

I have used wftimeshifter to correct the 1024 weeks WNRO problem. If your time shift is exactly N * seconds, you may use the same module. Check this link:

https://groups.google.com/g/earthworm_forum/c/px0LiP5yDAk

Victor

fish -

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Oct 14, 2021, 11:17:46 AM10/14/21

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Hi Ricardo,

Güralp Minimus digitisers use ublox GPS receivers which have no WNRO problem. Please report your synchronisation problem to support[at]guralp.com.