Remote data taking:
I. First determine how much data to take and how often the Labpro should record data. Do this by choosing the Setup tab and selecting Data Collection. Then choose the Sampling tab from the pop-up window. Experimental length is how long you want to take data for after you hit the start button. Sampling speed is how often you want to record data from the probes (i.e. so if you want to record the acceleration 10 times a second –every 0.1 second, then you type in 10 here). Over Sampling means do you want to record more data then selected in the Sampling speed, and then average over the extra data. Talk to your teacher about this one. Note that the maximum amount of data the Labpro can take is 12,000 points. So if you have 4 probes attached then you divide by 4 (i.e. each probe can record 3,000 data points). Note that oversampling does not change anything because these points aren’t recorded.
II. Click on the Remote tab, then choose Set up Labpro , follow the instructions on the computer.
III. You know you’re ready to go when the yellow light is on. Hit the start button on the Labpro just before you want to start taking data.
IV. To download the data onto the computer,
simply reconnect the Labpro to the computer and click on the Remote tab, this time choosing Retrieve Data from Labpro.
Miscellaneous
Instructions:
Setting the decimal
places for the data table and graph:
Double click on the data table. In the pop-up window set the number of decimal places you want.
Selecting which graph
shows what when have more than one probe:
Simply double click the graph window, and click the data you want displayed.
Max Sample rate:
(same for all 3 probes): max. is 2.67 samples per second for 50 minutes we'l1
do 1 sample per second. Will average over 3 samples for a data point.
Trouble Shooting
Resetting Labpro for remote data
taking:
If having trouble resetting Labpro, try clicking on the ‘retrieve data’ under the remote sensor tab once for each probe.