User`s guide
5-8
Basic Configuration
5.3.1. The Real Time Clock and Calendar
The Real Time Clock menu is used to set the VMR/NPS internal clock and calendar. The
configuration menu for the Real Time Clock offers the following options:
• Date: Sets the Month, Date, Year and day of the week for the VMR/NPS real-time
clock/calendar.
• Time: Sets the Hour, Minute and Second for the VMR/NPS real time clock/calendar.
Key in the time using the 24-hour (military) format.
• TimeZone: Sets the time zone, relative to Greenwich Mean Time. Note that the
Time Zone setting will function differently, depending upon whether or not the NTP
feature is enabled and properly configured. (Default = GMT (No DST).)
NTPEnabled: The Time Zone setting is used to adjust the Greenwich Mean
Time value (received from the NTP server) in order to determine the precise local
time for the selected time zone.
NTPDisabled: If NTP is disabled, or if the VMR/NPS is not able to access the
NTP server, then status screens and activity logs will list the selected Time Zone
and current Real Time Clock value, but will not apply the correction factor to the
displayed Real Time Clock value.
• NTPEnable: When enabled, the VMR or NPS will contact an NTP server (defined
via the NTP Address prompts) once a day, and update its clock based on the NTP
server time and selected Time Zone. (Default = Off.)
Notes:
• The VMR/NPS will also contact the NTP server and update the time whenever
you change NTP parameters.
• To cause VMR or NPS to immediately contact the NTP server at any time,
make certain that the NTP feature is enabled and configured, then type /F
and press [Enter]. When the System Parameters menu appears, press
[Esc]. The VMR or NPS will save parameters and then attempt to contact the
server, as specified by currently defined NTP parameters.
• PrimaryNTPAddress: Defines the IP address or domain name (up to 64
characters long) for the primary NTP server. (Default = undefined.)
Notes:
• In order to use domain names for web addresses, DNS parameters must first
be defined as described in Section 5.9.5.
• The Web Browser Interface includes two separate fields that are allowed to
define both an IPv4 protocol and IPv6 protocol format Primary NTP Address
and Secondary NTP Address.
• When the Primary NTP Address and Secondary NTP Address are defined via
the Text Interface, the VMR/NPS will display a prompt that instructs the user to
select IPv4 or IPv6 protocol.
• The VMR/NPS allows parameters for both IPv4 and IPv6 protocols to be
defined and saved.