Experimental Physics and
Industrial Control System

Michael Davidsaver via Tech-talk <tech-talk at aps.anl.gov> · Tue, 8 Mar 2022 23:05:05 -0800

On 3/7/22 00:47, gjzhai--- via Tech-talk wrote:

Hello！

I installed mrfioc2 2.3.0 on MTCA platform. According to EVR Usage Guide, when I do the timestamp test, there are two problems：

Could you describe your setup in more detail?

Where does the 1Hz (aka. 1 pulse per second) signal to the EVG
originate?  The same GPS receiver as the NTP server in question?

https://github.com/epics-modules/mrfioc2/blob/a8cb48d549b7aae13206cf2d168c6f1cfec2e1c4/evgMrmApp/Db/evgMrm.db#L93

a. The system is configured with NTP, but the current time provider does not have NTP

[opi@localhost ~]$ ntpstat
synchronised to NTP server (202.38.64.7) at stratum 3
    time correct to within 11 ms
    polling server every 512 s

b. The time interval between the system clock and the EVR time is large.

epics> generalTimeReport(2) Backwards time errors prevented 446106 times. Current Time Providers: "EVR", priority = 50 Current Time is 2022-03-07 16:34:25.575015. "OS Clock", priority = 999 Current Time is 2022-03-07 16:36:55.978638. Event Time Providers: "EVR", priority = 50

Thank you for your time. I am looking forward to your reply.

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System