The TI-CBL and TI-82
The program below, PRESSURE, is used by your TI-82 together with
the TI-CBL to make and record pressure readings.
If your workstation has a TI-Graph Link cable and the appropriate software
installed then you can download the program from this computer to the
calculator. Otherwise you can transfer the program from your instructor's
TI-82 using a linking cable or as a last resort type it in.
After you've entered the program into your TI-82, connect the TI-82 to the CBL
using the linking cable and plug the cable from the pressure sensor into the
channel 1 port of the CBL. Make sure that the TI-CBL is turned on.
Run the program PRESSURE. You should
see the screen below.
Now set the plunger at 20 cubic centimeters. Then open and close the
pressure release valve. For the remainder of this experiment the
pressure release valve should remain closed. You should see the READY
indicator on the TI-CBL and also see a pressure reading. Now press the
TRIGGER key on the TI-CBL. It will make one pressure reading
that will be recorded by the TI-82. You should see the following
screen on the TI-82.
Follow the instructions -- set the plunger at 19 cubic centimeters and
then press the TRIGGER key on the TI-CBL. It will make one pressure reading
that will be recorded by the TI-82.
Continue in this way, making and recording a series of pressure measurements
with the volume = 20, 19, 18, 17, ... 5.
When you are done collecting the data you can look at it by setting the
TBLSET screen as shown below.
and the Y= screen as shown below.
and then pressing TABLE and using the arrow keys to see the data
as shown below.
You can use this same basic set up for other experiments. Notice that before
you press the trigger key on the CBL it is displaying the pressure readings.
Without changing the program you can use the CBL as a pressure meter to do
experiments of your own design.
Copyright c 1997 by
Frank Wattenberg, Department of Mathematics, Montana State University,
Bozeman, MT 59717