Campbell Scientific LoggerNet Datalogger Support Software - Manual (Page 77)

Section 4. Setting up Datalogger Networks
Use Reported Station Name – Enabling this check box will cause the station
name from the Status Table to be used in the header of the data files. If this
check box is not enabled, the network map station name will be used.
This check box affects only the header of the data files. It has no
effect on the filenames.
4.2.4.4.5 Clock Tab
Time Zone Offset – A value can be entered into this field to set an offset for
the datalogger’s clock from the server’s clock, any time a clock set is
performed (manual or automatic). A positive value sets the datalogger’s clock
ahead of the PC’s clock; a negative value sets the datalogger’s clock behind the
PC’s clock. This may be useful if the server and the datalogger are in different
time zones.
Enabled – Select this box to automatically compare the datalogger’s clock to
the LoggerNet server PC’s clock based on the schedule defined by the other
parameters on this tab. If the datalogger’s time differs from the server’s time
by more than a specified amount, the datalogger’s clock will be set to the
server’s time.
A separate call to the datalogger will not be made exclusively to process a
clock check. A clock check will be made when the server contacts the
datalogger for some other function.
Setting up a clock check may not be desirable. It is possible to end up with
missing data or duplicate data if the datalogger’s clock is set forward or
backward enough to skip or duplicate a data storage event. Special
consideration should be given if the PC clock automatically adjusts for
Daylight Savings Time.
Refer to Section 4.2.6, Setting the Clock, for additional information on setting
and checking the clock.
Initial Date – The initial date field is used to define the date on which the first
clock check will occur. If the date entered in this field has already passed, the
datalogger’s clock will be checked at the next scheduled data collection.
Initial Time – This field is used to define the time at which the first clock
check will occur. As with the Initial Date field, if the time has already passed,
the clock will be checked at the next scheduled data collection.
Interval – The interval at which a clock check should be performed is
specified in the Interval field. If this interval is set at 1 day, the datalogger’s
clock will be checked daily, based on the initial date and time.
Allowed Clock Deviation – The Allowed Clock Deviation field is used to
specify the number of seconds the datalogger’s clock can differ from the
server’s before the server resets the datalogger’s clock.
Check Clocks – Press this button to manually initiate a clock check of the
LoggerNet server and datalogger clocks. The two values are displayed in the
Adjusted Server Date/Time and Station Date/Time fields, respectively.
NOTE
4-21