Polygon mirrors are used mainly as scanners in laser printers and copy machines. Ideally, the time intervals between the start of scan and end of scan from face to face, as well as for each face individually, should be identical over time.[TN] The TA520 Time Interval Analyzer accurately measures the time interval deviation for each surface ("one-face jitter"), and the rotation jitter ("wowflutter"), and has statistical analysis functions for short term and long term jitter.

Since the polygon mirror's profile irregularity, accuracy of installation, and wow-flutter all have a substantial impact on image quality, these are critical items to measure and evaluate. The one-face jitter tolerance in polygon mirrors is 0.01% or less, and the time resolution required during measurement must have accuracy of 0.0001% or less. The TA520 can measure at a high resolution of 25 ps, and by special-ordering the dedicated polygon mirror analysis function, you can perform statistical analysis of long-term and short-term jitter for any given face. It has powerful functions that let you specify the number of faces of the polygon mirror and then analyze statistical values from each block (one complete rotation).

• High Accuracy and Long Memory
  The TA520 is a high precision time interval analyzer with a measuring resolution of 25 ps (25 x 10-12 sec) and long memory of up to 512,000 data, making it a great choice for development of high definition and high speed products.
  
  
• Polygon Mirror Analysis Function
  The Polygon Mirror Analysis Function (special-order) lets you:
  - Display and perform statistical analysis on all measured data (standard function)
  - Display and perform statistical analysis on the data for a specified face
  - Perform statistical analysis on each block (a specified rotation) - Save and load measured data, statistical values, and instrument settings
  
  
• A Variety of Display Formats
  - The measured data can be observed in time variation (time trend), list, statistical value, and histogram views. In time variation display, the face interval trend when starting up and after reaching stability can be observed. Also, the list view lets you check statistical values for each rotation in minute detail.