The Caliper
A Publication for Users of Vernier Products

Logger Pro^® Keeps Getting Better!

While there are other applications that perform video analysis, Logger Pro 3.2 allows you to combine sensor-acquired data with video data.

Version 3.2 of Logger Pro is now available! This new version offers video analysis tools and strip chart mode, in addition to numerous other enhancements. If you have Logger Pro 3, you can download a free upgrade from the Vernier web site.

Many of you were excited about movies in version 3.1, in which you can insert a video clip of an experiment and synchronize it with existing sensor data. For example, you can insert a video of a chemical titration, and show the color change of an indicator while graphing the pH change. Now in version 3.2, you can extract quantitative data from the video using our new video analysis tools. To demonstrate this feature, we took a video clip of a basketball toss using an inexpensive web camera. The clip shows the ball in parabolic free fall motion. Using video analysis, the position of the ball as a function of time can be extracted. Frame by frame, the user clicks on the ball, and the x, y positions are recorded automatically by Logger Pro. The overall scale of the video is set by dragging across a strategically-placed meter stick visible on the floor. Velocity and other quantities can also be graphed using the calculated columns feature of Logger Pro 3.2.

Additional enhancements to Logger Pro 3.2:
• Strip charts, which are particularly useful for collecting EKG, heart rate, and weather data.
• Improved heart rate calculations, with more frequent updates.
• Improved compatibility with new versions of TI-Connect.
• Video analysis data can be synchronized with sensor data for comparison.

Logger Pro 3.2 still includes all of the features of Graphical Analysis, including import from Texas Instruments and Palm OS^® handhelds.

Logger Pro 3.2 for the Vernier LabPro^® interface includes the generous site-licensing of all Vernier software. One copy will outfit your entire school or college department, including students’ home computers. If you have Logger Pro 3, you can download a free upgrade from www.vernier.com/tech/lpupdates.html. Upgrades from the original version of Logger Pro or Logger Pro 2 are just $50 (order code ULP). Logger Pro 3.2 is for Windows^® (98 and newer), Macintosh^® OS 9 and OS X operating systems.