Vernier LabPro User Manual download pdf (Page 25)

Vernier LabPro User’s Manual

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Appendix A: Troubleshooting Tips

Refer to http://www.vernier.com/til/1613/ for additional troubleshooting tips.

Problem Cause/Solution

When LabPro is used with the

computer the Logger Pro 3

Collect button is faded (or the

Logger Pro 2 Collect button

does not appear).

The Collect button does not appear because the computer

could not communicate with the interface. Check each of the

following:

 Make sure the cables are firmly attached.

 Make sure LabPro is connected to the correct port on the

computer.

 Confirm that the port on the computer is working properly.

 Make sure the interface has power—either AC or battery.

When LabPro is used with a

TI graphing calculator, I get a

link error message

This message appears when the calculator cannot communicate

with the interface. Check the following:

 Make sure the cables are firmly attached to the calculator

and LabPro.

 Make sure the interface has power—either AC or battery.

The sensor is not working. This may be happening because the sensor is not plugged into

the correct port. Since LabPro has 4 analog and 2 digital ports,

make sure that the sensor is connected to the proper port.

The readings are noisy. LabPro may be picking up interference from other electrical

devices, such as a computer. Move the LabPro interface at

least 30 cm from another computer.

When LabPro is plugged into

AC power, the lights and

beeps are not generated.

When LabPro powers up, lights and beeps signal a successful

self-test. If batteries are already installed in LabPro, the self-

test will not be performed.

When connected to USB, a

light can be seen blinking

inside the interface.

This is normal when LabPro is used through a USB port.

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Vernier LabPro User Manual Page 25