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Time & date configuration
This page allows you to configure all aspects relating to time and date within the
AdderView CATx IP unit.
Timezone specifier
Optionally enter a recognised timezone specifier related to the current position
of the AdderView CATx IP unit. When an NTP server is used, the specifier will be
used to provide the correct real time.
The timezone specifier 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 specification describes when Daylight Saving Time is in
effect. The start field is when Daylight Saving Time goes into effect and the
end field 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 species 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 first week in which day d occurs, and week 5 specifies the last d
day in the month.
The time fields 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 Pacific: PST5PDT,M3.2.0/2,M11.1.0/2
For further details
• For details of timezone specifier 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 AdderView CATx IP: 4330)
http://www.ietf.org/rfc.html
Time and Date
Use the arrow buttons to set the correct current time.
Use NTP
When this option is selected, the AdderView CATx will synchronise its internal
clocks using information from the (Network Time Protocol) server listed in the
NTP Server IP address field.
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.