There are three buttons on the top of the LabPro unit that are visible when it is placed in the cradle to be used with a calculator.

1. TRANSFER: Transfers the calculator programs from the LabPro unit to the attached calculator. The LabPro unit identifies which version on the TI graphing calculator is attached and sends the appropriate program.

2. QUICK SET-UP: This button is used to collect data without a calculator attached to the LabPro unit and works only with auto-ID sensors.

3. START/STOP: Used with QUICK SET-UP to begin or end sampling. Sampling continues until the default number of samples has been collected or the START/STOP button is clicked again.

Lights

The LabPro has three lights above the buttons which indicate that the buttons are functioning properly:

• Red-indicates there is an error situation.
• Yellow-indicates that the LabPro is ready to collect data.
• Green-when it is flashing, indicates that the LabPro is collecting data.

The LabPro also emits several sounds that also indicate the status of the LabPro:

• A very low tone is heard whenever a key is pressed.
• A medium tone followed by a high tone is an indication that the LabPro is performing properly.
• A medium tone followed by another medium tone is an indication that caution is indicated and the LabPro is not functioning properly. For example, this tone is heard when a sensor that is not auto-ID is attempting to be used with the the Quick Setup feature.
• A medium tone followed by a low tone is also considered a "bad" sound and is an indication that the LabPro is not functioning properly.

1. Remove the temperature sensor from "~CH 1"and plug in the motion detector to the DIG/SONIC 2 port. 2. Open the Logger Pro software by clicking on the icon located on the desktop. Note: This will appear after loading the software on your computer. 3. The software will detect the auto-ID sensor, set the data collection parameters which are 20 samples per second for 10 seconds. The program will display a window with three graphs. Change the graph settings clicking on "View" and then "Graph Layout." 4. Select the radio button next to "One Pane" and click "OK." 5. The graph window which will be displayed will be similar to the image below. 6. Place the motion detector on a table with the gold disk facing upwards. Note: The motion detector is used to measure the distance from itself to a target object by emitting ultrasonic pulses. The usable range associated with the motion detector is 0.4 to 6 meters. 7. Click on the "Collect" button at the top of the graph window. The motion detector will begin making a clicking sound and collect data for 10 seconds. What type of line do you think will form in the graph window? If you answered a straight line, you are correct!! The was nothing between the motion detector and the ceiling. What type of line will form if you move your hand up and down over top of the motion detector as it collects data? 8. Click on "Collect" again, but this time move your hand up and down over the gold disk on the front of the motion detector. Think about the type of line which will form from this movement. Note: This line indicates that it was measuring the distance an object was from the motion detector. As your hand moved up and down, the motion detector recorded the distance your hand was from the gold disk on the motion detector. At what point on the graph was you hand the furthest away from the detector? 9. Click on the y-axis label to bring up this message box. By placing a check in any or all of the boxes, you can display graphs of time, velocity and acceleration in addition to distance. 10. The following link will demonstrate how to edit and print your data in usable form. Logger Pro Software Changing the Data Collection Set-up 1. If you do not want to use the default data collection settings, then click on "Set-up" and choose "Data Collection." 2. The mode tab has several options: Real Time Collect-this option collects data from the attached probes and sensors at a rate that you can set in the Sampling Tab under Sampling Speed. Repeat-this option collects data just like Real Time Collect but immediately starts a new collection upon finishing. You can set a very small experiment length (e.g. 0.01 second) and large number for Sampling Speed (e.g. 1000 points per second) and achieve an almost oscilloscope-like graph window. Events with Entry-this option allows you to collect data points which are associated with a number that you enter from the keyboard. To record a data point click on the Keep button, then enter a value in the entry field which appears. For example, you can perform a chemical titration or measure light intensity as a function of distance. After you choose this option, the dialog will ask you to enter the Column Label, Short Label, and Units for the quantity that will be entered form the keyboard. Selected Events-this option allows you to collect data at intervals you determine. Photogate Timing-this option allows you to collect photogate or Smart Pulley data. Choose Data Collection from the Setup menu. Then choose Photogate Timing from the drop down menu on the Mode tab. The photogate mode supports seven methods of collecting data. Radiation Counting-this option is used with the Radiation Monitor or Student Radiation Monitor. Connect either sensor to the DG1 port of the ULI of Sonic/DIG1 port of LabPro. 3. Click on the Sampling tab and change the Experiment Length and/or the Samples/Second. Use the Sampling Speed bar to determine the number of samples which will be collected per second. Note: If you increase the number of samples excessively, an error message will appear that states, "You have too many data points. Please reduce your data rate or experiment length and try again." 4. When the Enable Triggering is checked, data collection will wait for the trigger condition to be met. For example, if the trigger is set for "Temperature is greater than 25 degrees Celsius," then the data collection will not begin until that temperature is reached.

If you do not want to use the default experiment, press 1 on the main screen which is "SETUP." Arrow down to the the "MODE" setting and then Press "ENTER." A list of the different types of modes will be displayed.

QUICK SET-UP: This button is used to collect data without a calculator attached to the CBL 2 unit and works only with auto-ID sensors.

START/STOP: Used with QUICK SET-UP to begin or end sampling.

A message will be displayed which says: TO COLLECT DATA, QUIT THE PROGRAM, ATTACH AUTO ID SENSORS, PRESS THE QUICK SETUP BUTTON, THEN PRESS THE START/STOP BUTTON.

This can be used to collect data in the field or where calculators are available on a limited basis.

TIME GRAPH:This is the default mode and may be modified to suit your individual needs. Allows you to set the time intervals between sampling and the number of data points which may be taken. Advanced time settings can also be changed by pressing 3 which is "ADVANCED."

EVENTS WITH ENTRY: This setting collects a point each time you press "ENTER" and then asks the user to correlate that data point to a number.

SELECTED EVENTS: Collects a single data point each time you click on the "ENTER" key on the calculator.

When a sensor is chosen or auto detected by the software, a default calibration is loaded. It is not necessary to calibrate the sensors, but if you would like to calibrate a sensor manually, it is easy to accomplish.

1. After attaching the sensor to the appropriate channel on the CBL 2 unit, on the main screen, press 1 which is "SETUP."

2. Arrow down to the sensor you need to calibrate and press 2 which is "CALIBRATE." Not all sensors can be calibrated. If you choose one that cannot be calibrated, then the DataMate program will not respond to your request.

3. You will be instructed on the steps necessary to continue. Consult the literature which comes with each sensor to determine the proper calibration technique to use.

| Microcomputer-Based Laboratories | Learning to Use Technology  | Teaching With Technology |