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Figure: Vertical geometry alignment screens
Vertical:
•
Vertical slope (VSL). Aligns the picture so the proportions are the same at the
top and bottom of the screen. This alignment must be performed first, before all
other vertical alignments. Turning SBL ON will assist in performing this
alignment.
•
Vertical Amplitude(VAM). Aligns the height of the picture (other vertical
alignments are NOT compensated).
•
Vertical S-Correction(VSC). Aligns the vertical linearity, so that the vertical
intervals of the grid-patterns are the same over the entire height of the screen.
•
Vertical Shift(VSH). Aligns the vertical center of the picture to the vertical center
of the CRT. After performing this alignment, it may be necessary to perform the
VAM alignment again.
•
Vertical Zoom(VX). Adjusts picture height.
•
Service blanking(SBL). Turns the blanking of the lower half of the screen ON or
OFF (to be used in combination with the vertical slope alignment).
The table below lists the default GEOMETRY values for the different television sets.
Default Geometry Values
Alignment
Description 13L100/85R
HP
Hor.
Parallelogra
HB
Hor. Bow
HSH
Hor. S hift
19L135/37R 19L145/37R
Mono
31
31
31
31
23
23
19L145/85R
BTSC-NON-
BTSC-NON-
31
31
31
31
23
23
20L145/37R
20L135/37R
BTSC DBX
31
31
31
31
23
23
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