already running or the popup feature has been disabled (see p. 46), open the
Logger Reset dialog (click on the Insight toolbar, or press function key
F2, or select Logger > Reset from the menu bar) and specify your reset
options as follows.
Sample Interval Set the time which is to elapse between each set
(sample) of data points (one data point for each probe) that the logger will
collect. This sample interval is normally selected to ensure that 800–1,000
samples are stored over the whole run. Thus, sample interval is the profile
duration in seconds divided by the number of samples required. The shorter
the sample interval the better you will be able to record short-term
variations in your temperature regime – but the total recording time
available to you will be reduced, and the data will take longer to download
to the PC after the run.
Run Mode Select whether to use single-run or multiple-run mode.
In single-run mode:
• Data must be downloaded after every run.
• When starting the next profile run, the data held in the logger will be
deleted automatically (this is prevented if the data has not yet been
downloaded), so there is no need to reset the logger unless you wish to
change the data-collection parameters.
In multiple-run mode:
• The XL2 can collect data from up to 10 profile runs before it needs to be
downloaded (p. 57).
• After 10 profile runs have been performed, the logger must be reset using
Insight (see below) in order to delete data from the logger and empty it
for further runs.
• Individual profile runs can be downloaded from the logger at any time, but
this does not free up any space in the logger’s memory until the whole
memory is emptied by performing a reset using Insight.
• Each multiple run will be performed using the same data-collection
parameters, until the logger is reset.
Telemetry Select ‘No Telemetry’.
Memory Calculator Calculates the maximum time for which the logger
can collect data, given the sample interval which has been set and assuming
that eight probes are in use, with a single Transducer Interface. When a
Dual Interface Block and two Transducer Interfaces are used, check the
option provided in the dialog: this calculates a revised time, assuming that
16 probes are in use (i.e. the time will be halved). If multiple runs are to be
performed before downloading data, the calculated data-collection time
must be enough to cover the total time for those runs. See p. 23 for details
of the logger’s memory capacity. The data-collection time may be further
48 Running a Temperature Profile OVEN TRACKER XL2