Vertical Linearity (V-Lin) - DEC VR297 User Manual

2.4.1 Vertical Linearity (V-LIN)

To check and adjust vertical linearity:
1. Display the circle-crosshatch screen.
2. Check the pattern to make sure the squares are all the same height.
If the squares are not all the same height, go to the next step.
3. Refer to the next two figures. Turn the V-LIN BAL (RV103) control to
equalize the height of squares in symmetrical positions at the top and
bottom of the pattern—for example, the top-center and bottom-center.
4. Turn the V-LIN (RV102) control to equalize all the squares in the
pattern.
V LIN figure 1 ma-0954-89
21
Adjustments