The PerfecTest system identifies and measures the specific processes that cause registration error. It identifies error relating to:

1) The SIZE of each layer,(expansion or shrinkage) in both X and Y axis, and provides corrected scale factor for that job, or any future job with the same panel construction. It is important to note that PerfecTest enables the user to establish a construction-specific database that includes all of the variables that affect registration, including:

      a.copper thickness
      b.copper geometry
      c.glass style and thickness of each pre-preg
      d.glass style and thickness of each core
      e.type of material (FR4, Polyamide, etc.)
      f.panel size and layout

2) The LOCATION (shift and rotation) reveals how layers stacks-up within a panel so the fabricator can:

      a.identify and measure errors occurring during imaging; and separate
      random imaging error from repetitive imaging error.
      b.identify and measure core errors during lamination, enabling the
      fabricator to identify the specific cause of core-to-core error, such as
      post-etch punch inaccuracy, problems in stack-up, uneven press
      pressures, etc.
      c.identify and measure panel-to-panel variation, occurring at the drill.

The PerfecTest database is designed to be networked directly into pre-production engineering. When a new job is set up in pre-production engineering or CAM, the PerfecTest software will automatically search its database, find the best-matching scale factors for each layer, in X and Y axis, based on previous jobs with the same or similar construction, and import those scale factors directly into CAM / photoplotting.

The new-generation, PerfecTest Version 4, offers all-inclusive automated search functions to determine optimized scaling factors during the set up of new jobs. PCB fabricators in 22 countries use it. Major PCB OEM/EMS fabricators specify it as a process standard.