Euresys 1669-DR Picolo.net HD1, Руководство пользователя

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Time and Date
AUTOMATIC TIME AND DATE SYNCHRONIZATION METHOD
The automatic synchronization method keeps the device time and date in sync with the time
and date of up to two NTP servers.
This method requires to have access to at least one NTP server on the network.
The IP address of the NTP servers can be:
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Obtained automatically using DHCP providing that the DHCP server on the network provides
this service.
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Manually configured.
An out-of-the-box device, or a device after a "restore factory settings" procedure, is configured
for:
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Automatic synchronization using NTP.
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Obtain automatically DNS addresses using DHCP.
GPS TIME AND DATE SYNCHRONIZATION METHOD
By plugging in a GPS device, the user automatically switch the device into GPS time
synchronization mode . Time and date are then obtained from the GPS device, overriding known
NTP servers and the internal clock.
MANUAL TIME AND DATE SYNCHRONIZATION METHOD
When the device is configured in the manual method, the date and time may have to be
manually restored at the next power-up after a long power-off time. The super-cap protecting
the real-time clock device has an autonomy of at least 48 hours.
TIME ZONES AND DAYLIGHT SAVINGS TIME
Picolo.net products support time zone and daylight savings time settings. To configure the time
zone, the user must provide the appropriate POSIX.1 TZ string describing the UTC offset and,
when applicable, the daylight saving rule.
The Daylight Savings Time (DST) can be enabled or disabled on request.
Sample Time Zone rules in POSIX.1 TZ string format
CET-1CEST,M3.5.0/2,M10.5.0/3
applies to Central Europe including Belgium:
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Local time: CET = UTC + 1 hour
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Daylight Saving Time: CEST = CET + default DST offset of 1 hour
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DST starts on last Sunday of March at 02:00:00 CET
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DST ends on last Sunday of October at 03:00:00 CEST
Picolo.net Handbook Functional Specifications