• Now supports a USB PC interface for fast measurements and easy “plug and play” setup.
• A portable system for assessing and aligning motion picture projection systems
• Analyzes and displays a real-time map of the luminance values of every part of the screen simultaneously
• Makes lamphouse adjustments extremely easy for optimum picture quality
• Measures projector artifacts such as weave, jitter and flicker
• PSA software is compatible with Windows 98SE, Windows ME, Windows 2000 or Windows XP
• Results of all measurements can be saved in a report and printed for quality control reference
• Unit consists of a specialized video camera, tripod, case, 75-foot camera cable, USB interface box and cable, power adapter and cord, software on a CD ROM and manual

PSA One Sheet (PDF Format, 596 Kb)
English

• Luminance Ranges: 1-30 ft. L, 30-300 ft. L
• Luminance Accuracy: +/- 5% +/- 2 digits
• Power Consumption: 4.5 W @ 12 VDC
• Weight: Approx. 19.5 lbs.

Manuals are available in PDF format, if you do not have Adobe Acrobat Reader you can download it from: http://www.adobe.com/products/acrobat/readstep.html

PSA-200U Analyzer System (2.82 Mb)

PSA-200 Support Documents

The following items are intended as helpful hints to aid in making accurate measurements of weave and jitter. (It is assumed that you have read the "Checking Weave and Jitter" section of the PSA-200 manual.)

1. The loop of RP-40 test film should be as long as practical. It is good practice to use a loop of 20 to 25 feet in length, passing the film from the projector to a platter roller and back. The minimum practical loop length is about 8 feet. Shorter lengths result in too short a time interval between splices for accurate measurements to be made. The algorithms of the weave and jitter measurements are iterative and averaging processes. They analyze the change in position of the squares as the film passes through the gate. The wide misalignments of a splice cause errors which must be evaluated and discarded. The longer the time between splices, the higher the percentage of good data that is available for the analysis.
   
   
2. Use the "flat" lens of the projector, (1.85:1 for example), and enter the aspect ratio of the aperture in the "Program" set-up box of the "Settings" menu.
   
   
3. Position the camera approximately one screen-width back from the screen in the audience area of the auditorium. Center the screen image on the viewfinder.
   
   
4. Run the loop of RP-40 test pattern film.
   
   
5. Click on F7 (Weave & Jitter), then click on F3 (Camera View), a small red box will appear at the lower left of the laptop screen. This box indicates the area which the software analyzes in making the measurements. Two aspects of this box are important: a. that it enclose only the checker-board-squares portion of the pattern and does not include any other graphics; and b. the camera lens should be zoomed in far enough that the box enclose approximately three squares horizontally and three squares vertically.
   
   
6. Switch back to F7 to make the measurements. After approximately 15 seconds the first measurements will be displayed. Depending on the length of the loop and the misalignment at the splice, it will take from one to four minutes for the results to reach the final values asymptotically.
   
   
7. Our research has shown that the PSA will present stable, consistent readings within one minute from a 20 foot test loop. It can take up to four or five minutes for final values to be reached when shorter loops are used.
   
   
8. The PSA-200 is calibrated for use with SMPTE test film RP 35-PA/ RP-40 for 35mm projectors. If measurements are made using SMPTE 70-PA film on 70mm projectors, the weave and jitter readings will be 10% higher than the actual values.