Chapter 4 – Configuration
3.2 SYNCHRONIZATION
If the IRIG-B signal has the CF extensions (IEEE1344), timing information as date, hour, year, time zone and
daylight saving time can be provided by the signal. Time zone and daylight saving time information can also
be manually set via the Web Interface, overriding the information of the IRIG-B signal.
3.2.1 TIME SOURCE
On the screen TIME SOURCE it is possible to configure how the RPV311 will interpret the time zone of the
IRIGB signal and also the IP address of the NTP server.
The configurable settings are:
A The TIMEZONE defines if time zone information is supplied by the IEEE1344 extensions of the IRIG-B
signal, or if it is manually set. This option will allow the RPV311 to identify the UTC time using information
from the signal or from the manual configuration of the user:
o When Auto (IRIGB with extensions) is selected the RPV311 shall use the information of time zone
sent within the IRIGB signal to recover the UTC time.
o When Manual is selected the RPV will not consider eventual time zones within the IRIGB signal, and
rather it will use the UTC time zone configured in the Manual parameter to retrieve the UTC time.
This option is used specially when the IRIGB does not inform the time zone, so the RPV311 cannot
retrieve the UTC time unless we inform the time zone manually.
The time setting that the RPV will use for time stamping is configured on the screen Internal Clock.
It is possible to configure 30 min time zones.
B The NTP FALLBACK SERVER defines the IP address of the SNTP time server to be used to provide time
synchronism when the IRIG-B is not connected.
3.2.2 INTERNAL CLOCK
On the screen the internal clock for time stamping the registers and logs is configured, as well as day light
saving configurations.The configurable settings are:
A The TIMEZONE defines if time zone information is supplied by the IEEE1344 extensions of the IRIG-B
signal, or if it is manually set.
When Auto is selected the RPV311 will use the same local time sent within the IRIGB signal.
When Manual is selected the RPV311 will use the UTC time (retrieved using information from the
Time Source screen) and calculate the local time using the UTC time zone configured on the Internal Clock
screen.
B The DAYLIGHT SAVING TIME defines if time information is supplied by IEEE1344 extensions of the IRIG-B
signal, or if it is either manually set or disabled. If it is manually set, it is possible to choose the date and time
of the start and the end of the DST period.
It is possible to configure 30 min time zones.
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