in the toolbar.Data are collected at a rate that is pre-set in an experiment file or an auto-ID sensor.
If you want to change the default settings, choose Data
Collection from the Experiment
Menu by clicking
in the toolbar.
Set the Mode to Time Based to collect data over time.
To set the Duration of the experiment, select the time and time units that are most appropriate for your collection: milliseconds(ms), seconds(s), minutes(min), or hours(hr). The time axis of the graph will be modified to reflect the experiment duration.
If Repeat is checked, a new run starts immediately after the previous run is completed. Stop data collection by clicking the Stop button.
If Sample At Time Zero is checked, a data point will be taken immediately when data collection starts. If not, the first data collection point will be collected based on the data collection rate. For example, if the data collection rate is set to 1 sample/second, the first point will be collected 1 second after data collection has been started.
If Continuous Data Collection is checked, data collection will continue beyond the data-collection duration that has been set for the file and will keep going until the Stop button is clicked. Data will be collected at the data-collection rate that is set up in the file. Note: When Continuous Data collection is activate, Repeat mode is disabled.
You may enter the desired number of samples per time to be collected. If you enter a value for the samples/time, the time/sample value will automatically be updated. You can also enter a value of time/sample and Logger Pro will update the samples/time value. For example, if you enter a value of 5 samples/second, the value of seconds/sample will be updated to 0.2 sample/second.
Note: The maximum data-collection rate depends on the interface, number, and type of sensor(s) being used. The following rates are the maximum rates for each interface.
Oversampling collects a number of additional samples for each sample interval, takes the average, and uses that average for the recorded data point. This is helpful in smoothing out extraneous noise read by the sensor. At data collection rates faster than 0.25 points/second, the oversampling interval is the entire time between samples, while at slower rates the oversampling interval is a 2 second window around the sample time.
The total number of points that will be collected is shown here. For example, if you choose a duration of 180 seconds, a sampling rate of 1 samples/s, and check Sample At Time Zero, you will collect 181 points.