Creating Masks; Figure 3 61: The Mask Testing Pop Up Menu - Tektronix 11801C User Manual

Mask Testing

Creating Masks

A user mask is created by moving a cross hair cursor on the display and
adding or deleting points as required. You can edit or use the masks at any
time by selecting the Mask Testing pop up menu from the Display Modes
major menu. See Figure 3 61.
To create a mask, press the DISPLAY MODES button, and then touch Mask
Testing. This brings up the Mask Testing pop up menu. To create a new
mask, select any one of the MaskN" labels, for example, Mask1. Next,
touch Edit Mask Definition. This displays the mask editing screen. A cross
hair cursor is located at the center of the display. The cursor is moved by
turning the knobs. The upper knob is assigned to Mask Cursor X and the
bottom knob is assigned to Mask Cursor Y.

Figure 3 61: The Mask Testing Pop up Menu

To add a point to a mask, use the cursors to locate the cross hair cursor
over the location where you want to add a point. Touch Add Point. To delete
a point from a mask, locate the cursor over the point to be deleted. Touch
Delete Point. When you are finished creating the mask, touch Exit Mask
Editing. See Figure 3 62.
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