User Manual

Pearl-2 User Guide Configure date and time
If the system settings control icon won't appear when you tap the touch screen, it may be
disabled. See Configure the touch screen to enable system information.
Configure a time server
Pearl-2 uses the Network Time Protocol (NTP) server from the National Research Council of Canada by
default. You can change to a different time server using the Admin panel. Contact your system administrator
for the time synchronization server settings you should use.
The following table lists the time server types that Pearl-2 supports.
Table 24 Supported time servers
Label Description/Options
NTP
Network Time Protocol (NTP) servers are used to synchronize system time. Many
NTPservers are available on the Internet. Or your company may have its own
local NTP server. All you need is the IPaddress of the NTPserver and network
access to the server to use that as the time synchronization source for Pearl-2.
For more information about NTP and to find NTPservers, refer to
http://support.ntp.org/bin/view/Servers/WebHome.
RDATE
RDATE is a tool for querying the current time from the network. It is generally
considered obsolete and has been replaced by NTP. It's offered here for
backwards compatibility purposes.
PTP v1
The Precision Time Protocol (PTP) is used for clock synchronization over the
Internet. It has clock accuracy in the sub-microsecond range, making it more
granular than NTP.
NTP sends UDP packets over port 123 on Pearl-2 and PTP sends UDP packets over ports 319 and
320. If Pearl-2 is behind a firewall, you must open these ports to allow traffic when Pearl-2 is
configured to use either an NTP or a PTP server to obtain its time and date information.
To set the time synchronization method for Pearl-2:
1. Login to the Admin panel as admin, see Connect to the Admin panel.
2. From the Configuration menu, click Date and Time . The Date and Time configuration page opens.
3. For local NTPservers, check Enable local NTPserver. Otherwise, skip this step.
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