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•
If the former master is working again, it takes the current time from GPS, compares
with the current master and remains in slave mode. (Initially it will take the time from
redundant link; first source which is locked is used to set the time.)
•
In the case of a fibre optic connection loss and both devices are still GPS
synchronized, the master remains in master mode and the slave changes from slave
to master mode. But both devices release an alarm.
NTP
The NTP clients select the server with the better (lower) stratum.
PTP
Clients use BMCA (Best Master Clock algorithm)
RTC:
It is recommended to not use the RTC.
Notice:
If redundant mode is in use, either leave network settings of
port 4
on
default values or at least switch DHCP = ON, PTP = OFF and SyncE =
OFF.
8.15 Logfile Synchronization status
The DTS 4160 provides a logfile under /ram/
date-wd
.log (e.g. /ram/20181114-Wed.log)
about the synchronization status seven days back. The Log interval is 1 minute. The
maximum value of this 1 minute is written to the file.
Example:
Date&Time UTC Offset GNSS Offset PTP Offset NTP Offset DCF Offset Red. Offset E1
141118 000000 0 ( ) 104 (+) 0 ( ) 0 ( ) 96 (*) 0 ( )
141118 000001 0 ( ) 104 (+) 0 ( ) 0 ( ) 96 (*) 0 ( )
141118 000002 0 ( ) 104 (+) 0 ( ) 0 ( ) 96 (*) 0 ( )
(*) = active source
Please see chapter 7.6 how to make an ftp connection to the device.
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