User`s guide

11 Mask Test
346 InfiniiVision Oscilloscopes User’s Guide
Mask Violation Regions
Up to 8 regions can be defined for a mask. They can be numbered 1-8. They can appear in
any order in the .msk file. The numbering of the regions must go from top to bottom, left
to right. The lowest numbered region
An Automask file contains two special regions: the region “glued” to the top of the
display, and the region that is “glued” to the bottom. The top region is indicated by
y-values of “MAX” for the first and last points. The bottom region is indicated by y-values
of “MIN” for the first and last points.
The top region must be the lowest numbered region in the file. The bottom region must be
the highest numbered region in the file.
Region number 1 is the top mask region. The vertices in Region 1 describe points along a
line; that line is the bottom edge of the top portion of the mask.
Similarly, the vertices in Region 2 describe the line that forms the top of the bottom part of
the mask.
The vertices in a mask file are normalized. There are four parameters that define how
values are normalized:
• X1
Region 1
Region 2