SymphoniePRO User Manual
Rev. 8
support@nrgsystems.com | Page 47
11 January 2018
3.3.2 MetLink Logger Listening Schedule
Frequency
Connection frequency can be set to 10 minutes, 30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, 12 hours, daily, 2
days, 3 days, 4 days, 5 days, 6 days, or weekly. Setting the connection frequency to Disabled will prevent the
desktop application from allowing an inbound connection, and attempts to initiate a connection from the
logger’s keypad will be ignored.
Time (Logger Local)
The Time field allows the user to select the time of day at which connection will occur. Time can be edited as
needed and does not need to be at the top of the hour.
Duration
Duration is the length of time the logger remains powered up and listening for a connection. The duration can
be set to 1 minute, 10 minutes, 30 minutes, 1 hour, 2 hours, 4 hours, 6 hours, 12 hours, or continuous. Longer
listening modes consume additional battery power, so the duration should be set as short as possible but long
enough to establish a successful connection.
MetLink connections will remain active for up to one hour or 20 minutes beyond the programmed MetLink
Logger Listening duration, whichever is greater. MetLink Logger Listening connections can be initiated any time
within the scheduled Listening period, and the connection will continue until manually disconnected or after the
duration described above. For example, if you connect 1 minute before the listening period ends, the connection
will be maintained until you disconnect or the session times out as described above. Closing SymphoniePRO
Desktop Application closes all MetLink connections.
Next
The Next field shows the next date and time at which SymphoniePRO Desktop Application will be able to
attempt a connection to the logger based on the current schedule. The date and time are updated any time the
Frequency or Time fields are changed, not just upon saving to or loading from the logger. However, the updated
settings will only take effect after they have been saved to the logger.
End Time
The End Time defines the specific time at which the MetLink Logger Listening period will end.
Listen Now
The Listen Now button initiates a logger listening session separate from the regularly scheduled connection and
allows SymphoniePRO Desktop Application’s connection to the logger to be tested.
3.3.3 Time Service
The logger’s internal clock is synchronized to UTC time through the internet using an SNTP server or through the
iPack’s GPS. Both of these time synchronization methods are run independently during iPack communication
operations with the SNTP server providing backup if no GPS signal is available.
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