Figure 3 62: Editing A Mask - Tektronix 11801C User Manual

Mask Testing

Figure 3 62: Editing a Mask

Masks are created by connecting the points independent of the order they
are entered. Points are connected by sorting the points into left to right
order and grouping them across a diagonal from the left most point to the
right most point. If two points share the same horizontal position along either
the left or right edge of the mask, then the diagonal runs from the top left
most point to the bottom right most point. Points below the diagonal form
the bottom boundary of the mask; points above it form the top boundary.
Thus, it is difficult to make masks that have concave sides. (See Hints for
Creating Masks, below.)
The illustrations on the following pages show how mask points are con
nected when you edit a mask.
Deleting User Masks
To delete a mask, first display the Mask Testing menu. Select the mask to
delete by touching the MaskN selector and then touch Delete Mask Defini
tion.
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