User guide

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Time & date conguration
This page allows you to congure all aspects relating to time and date within the unit.
Timezone specier
Optionally enter a recognized timezone specier related to the current position of the
ALIF 2112T unit. When an NTP server is used, the specier will be used to provide the
correct real time.
The timezone specier takes the following form:
std offset dst [offset],start[/time],end[/time]
The std and offset specify the standard time zone, such as GMT and 0, or CET and -1,
or EST and 5, respectively.
The dst string and [offset] specify the name and offset for the corresponding Daylight
Saving Time zone; if the offset is omitted, it defaults to one hour ahead of standard time.
The remainder of the specication describes when Daylight Saving Time is in effect. The
start eld is when Daylight Saving Time goes into effect and the end eld is when the
change is made back to standard time. The most common format used for the daylight
saving time is: Mm.w.d
Where: m species the month and must be between 1 and 12. The day d must be
between 0 (Sunday) and 6. The week w must be between 1 and 5; week 1 is the rst
week in which day d occurs, and week 5 species the last d day in the month.
The time elds specify when, in the local time currently in effect, the change to the other
time occurs. If omitted, the default is 02:00:00.
Typical examples are:
UK: GMT0BST,M3.5.0/1,M10.5.0/2
Central Europe: CET-1CEST,M3.5.0/2,M10.5.0/3
US Eastern: EST5EDT,M3.2.0/2,M11.1.0/2
US Pacic: PST5PDT,M3.2.0/2,M11.1.0/2
For further details
• For details of timezone specier formats, please refer to:
http://www.gnu.org/software/libc/manual/html_node/TZ-Variable.html
• For details of the Network Time Protocol (main RFC number: 1305; the SNTP subset
used as the basis for the ALIF 2112T: 4330)
http://www.ietf.org/rfc.html
Use NTP
When this option is selected, the ALIF 2112T will synchronize its internal clocks using
information from the (Network Time Protocol) server listed in the NTP Server IP address
eld.
NTP Server IP address
Optionally enter the IP address for a known Network Time Protocol server.
Set Time from NTP Server
Click to immediately use the time and date information from the listed NTP server.
To get here
1 Using VNC viewer or a browser, log on as the ‘admin’ user.
2 Click the ‘Congure’ button in the top right corner.
3 Click the ‘Time & Date Conguration’ option.