User`s guide

5-8
Basic Configuration
• NTPEnable: When enabled, the RPC 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 RPC will also contact the NTP server and update the time whenever you
change NTP parameters.
• To cause RPC 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 RPC will save parameters and then attempt to contact the server, as
specified by currently defined NTP parameters.
• PrimaryNTPAddress: 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 Server parameters
must first be defined as described in Section 5.9.5.
• The Web Browser Interface includes two separate fields that can be used 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 RPC will display a prompt that instructs the user to
select IPv4 or IPv6 protocol.
• The RPC allows parameters for both IPv4 and IPv6 protocols to be defined
and saved.
• SecondaryNTPAddress: Defines the IP address or domain name (up to 64
characters long) for the secondary, fallback NTP Server. (Default = undefined.)
• NTPTimeout: The amount of time in seconds, that will elapse between each
attempt to contact the NTP server. When the initial attempt is unsuccessful, the
RPC will retry the connection four times. If neither the primary nor secondary NTP
server responds, the RPC will wait 24 hours before attempting to contact the NTP
server again. (Default = 3 Seconds.)
• TestNTPServers: Allows you to ping the IP addresses or domain names defined
via the Primary and Secondary NTP Address prompts, or to ping a new address or
domain defined via the Test NTP Servers submenu in order to check that a valid IP
address or domain name has been entered.
Notes:
• In order for the Test NTP Servers feature to function, your network and/or
firewall must be configured to allow ping commands.
• In addition to the Test NTP Servers option, the /TEST command in the Text
Interface or the "Test" option in the Web Browser Interface can also be used
to ping any user defined IP address in order to make certain that the IP
address is responding.