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Tutorial 7: Default and Custom Mask or Limit Line Testing
Create a Mask or Limit Line
1 Set the analyzer to a known state by pressing:
INSTR PRESET, Setup, BIT INTVL and enter 1.5, Traces, persist,
VARIABL, PERSIST SWEEPS and enter 8
MENU, page 1 of 2, Analyze, masks, limits, define shapes, type:
• If you want to create a mask, press MASK.
• If you want to create a limit line, press UPPER LIMIT or LOWER LIMIT.
Select a Default Mask Shape
2 Select the shape that most closely matches the mask you need. For example,
to display a hexagon, press:
default shapes, hexagon
Edit the Shape
3 To edit the shape, press:
edit
Move a Point
4 To move a point, select the point to be moved by pressing: ⇑ or ⇓
5 Select the direction to move by pressing: move X|Y
Move the point by rotating the front-panel knob or using the numeric keypad.
Add a Point
6 To add a point, select the point to be moved by pressing: ⇑ or ⇓
Note Select the closest point counterclockwise from the one that you intend to add.
7 Add a point at the location of the currently selected point by pressing: ADD
POINT
A point is inserted between the currently selected point and the next point.
8 Select the direction for moving the new point by pressing: move X|Y
Rotate the front-panel knob to move the point.
Delete a Point
9 To delete a point, select the point to be moved by pressing: ⇑ or ⇓
10 Delete the point by pressing: DELETE POINT