VIVOTEK
User's Manual - 51
System time
Keep current date and time
: Select this option to preserve the current date and time of the Network
Camera. The Network Camera’s internal real-time clock maintains the date and time even when the
power of the system is turned off.
Synchronize with computer time
: Select this option to synchronize the date and time of the Network
Camera with the local computer. The read-only date and time of the PC is displayed as updated.
Manual
: The administrator can enter the date and time manually. Note that the date and time format are
[yyyy/mm/dd] and [hh:mm:ss].
Automatic
: The Network Time Protocol is a protocol which synchronizes computer clocks by periodically
querying an NTP Server.
NTP server
: Assign the IP address or domain name of the time-server. Leaving the text box blank
connects the Network Camera to the default time servers. The precondition is that the camera must
have the access to the Internet.
Update interval
: Select to update the time using the NTP server on an hourly, daily, weekly, or monthly
basis.
Time zone
: Select the appropriate time zone from the list. You can scroll down on the Time zone menu to
find the Customize option and use the POSIX TZ variables. For example,
http://www.gnu.org/software/
libc/manual/html_node/TZ-Variable.html.
Here are some examples for TZ values, including the appropriate Daylight Saving Time and its
dates of applicability. In North American Eastern Standard Time (EST) and Eastern Daylight
Time (EDT), the normal offset from UTC is 5 hours; since this is west of the prime meridian,
the sign is positive. Summer time begins on March’s second Sunday at 2:00am, and ends on
November’s first Sunday at 2:00am. EST+5EDT,M3.2.0/2,M11.1.0/2
Israel Standard Time (IST) and Israel Daylight Time (IDT) are 2 hours ahead of the prime
meridian in winter, springing forward an hour on March’s fourth Thursday (i.e., on the first Friday
on or after March 23), and falling back on October’s last Sunday.
IST-2IDT,M3.4.4,M10.5.0
