Texas Instruments CBL 2, Руководство по началу работы

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70 G
ETTING
S
TARTED WITH THE
CBL 2™ S
YSTEM
© 2000, 2003 T
EXAS
I
NSTRUMENTS
I
NCORPORATED
Set up the Experiment
1.
Connect the CBL 2 to your calculator using the unit-to-unit cable. Then connect
the light sensor into Channel 1 (CH1) of the CBL 2.
2.
On the calculator, run the DataMate program or app.
DataMate automatically identifies the light sensor and
loads a default experiment. The Main Screen of
DataMate is shown.
3.
Hold the light sensor inside your fist with the end of the sensor protruding
about ½ inch, as shown in the picture above. The end of the sensor must be
pointed toward a light source while the CBL 2 is sampling.
4.
The top right corner of the DataMate Main Screen shows the light intensity
readings from the light sensor as it is covered and uncovered.
Collect the Data
1.
Press
Á
START to begin data collection using the default experiment.
2.
Cover and uncover the sensor in regular time intervals, about once per second.
3.
If your data is not satisfactory, press Á START to perform another trial.
Your data should show intensity levels which start at a large value then
alternate between this value and a value close to zero in a regular pattern. The
time interval between cycles should appear to be relatively constant.
Analysis
If your data is satisfactory, sketch a plot of your data on the axes on the Student
Data Reporting Sheet 1.