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<== Date ==> <== Thread ==>

Subject: Re: EPICS Time provider, MRF TImestamp
From: Michael Davidsaver via Tech-talk <tech-talk at aps.anl.gov>
To: GAGET Alexis <alexis.gaget at cea.fr>, "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>
Date: Tue, 12 Oct 2021 08:14:40 -0700
On 10/12/21 7:37 AM, GAGET Alexis via Tech-talk wrote:
> Dear All,
> 
> I have a MRF Timing system that is working well. I’m using Timestamp from the EPICS driver mrfioc2. I can see in my MRF IOCs that the Time provider is the “EVR”, and then all my PVs in those MRF IOCS are well timestamped.
> 
> But obviously in my other IOC (soft IOC or any other device IOC), I haven’t MRF Time provider and they are using the “OS Clock” as a timestamp reference.  I’d like to use the MRF Timestamp as reference for any IOCs in my system. Is there a way to do that ? declaring a new time provider from a PV ? I’ve tried to test to declare a new time provider without any success until then, if you have example it’s welcome.
> 
>  
> 
> Sure my OS can be synchronized by NTP, but I have bad experience with NTP and I’d like to know if there is an EPICS way to do that.

The mrfioc2 driver can be configured to act as a clock provider
to a local ntpd instance.  This gives a much lower jitter time
reference to the NTP daemon.

See section 7 "NTPD Time Source" in:

http://epics.sourceforge.net/mrfioc2/evr-usage.pdf

References:
EPICS Time provider, MRF TImestamp GAGET Alexis via Tech-talk

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