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Typically, LogWare is used to take continuous measurements on all enabled
channels. However, LogWare has a feature that allows one measurement to be
taken on each enabled channel at a set interval. For example, LogWare could be
used to monitor the gradients in a liquid bath using 10 probes at various loca
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tions in the bath. To measure gradients, readings should be taken simulta
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neously, or at least as close together as possible, but maybe a set of readings
only needs to be taken once every minute, or once every five minutes. This can
be accomplished using LogWare by enabling the Interval between scan se
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quences option. The Interval between scan sequences settings are then enabled.
A scan sequence is defined by LogWare as taking a single reading on each en
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abled channel. Select the interval to use. LogWare allows this interval to be set
anywhere between 1 minute and 60 hours at 1 minute or 1 hour increments.
Leaving this feature disabled causes LogWare to begin a new scan sequence
immediately following completion of the previous scan sequence.
The Start log session box indicates the current setting for starting a log session.
By default, this setting is configured to start a log session immediately after the
Start button is clicked. LogWare may optionally be configured to start a log ses
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sion unattended on any date at any time. To set the start date and time, click the
Delayed Start button. The Delayed Start Date/Time dialog is displayed. Please
refer to Section 2.3.4, Delayed Start Date/Time Dialog, for details on using this
dialog.
Clicking the Reset button resets the start date/time setting. The log session will
start immediately after the Start button is clicked.
The End log session settings allow the log session to be configured to automati-
cally stop logging at a certain time or after a certain number of readings. By de-
fault, a log session will continue until manually stopped by the user. Select the
method to use to end the log session using the drop-down list. Choices are:
•
By user (default)
•
After specified number of readings
•
After specified time elapses
If the After specified number of readings or After specified time elapses option
is selected, the end log criteria must be selected. Enter either the number of
readings to acquire on each channel or the desired elapsed time setting. The
range of choices is from 1 to 1,000,000 readings (10,000 default) or 1 second
to 480 hours (1 hour default).
Note: If either the After specified number of readings or After specified
time elapses option is selected and the Interval between scan sequences
feature is enabled, the log session will stop automatically when the end
log criteria is met and the current scan sequence is complete.
23
2 Real-time logging
Log session settings dialog
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