Specifications

Chapter 1: Overview of the ZVG
1 – 4
C. Jumpers and Indicators
The following is a descriptions of the jumpers and adjustments available on the
ZVG board.
Note: For simple operation it is not important to understand what each jumper does. The
following sections will describe how to set them up for the most commonly avail
-
able vector monitors.
Jumper Settings
• (J3) Vector Table Selection. Select which firmware timing table to use.
• (J4) Vector Draw Speed. Select vector drawing speed.
• (J7) Linearity Correction Enable. Corrects for edge bloom.
• (J8) Pincushion Correction Enable/Disable. Corrects for pincushioning.
• (J8) Screen Size 2x Enable. Doubles screen size.
• (J3) Setup enable / disable. Allows firmware / timing table updates.
Variable Adjustments
• (R54,R42) X/Y Line Length Settings. Adjusts proper line length of vectors.
• (R96,R69) X/Y Size Adjustments. Sets the screen size.
• (R86,R78) X/Y Centering. Allows screen centering.
• (R76) Trapezoid adjustment. In effect only if Pincushion is enabled, adjust for
proper vertical Trapezoid alignment.
LED Indicators
•(D3) Power.
• (D4) Vector Draw Indicator / Error Blink Indicator.
Additional Software Adjustments (using ZVGTWEAK.EXE)
• Starting and Ending point intensities.
• Vector “Jump” speed. This is the time allowed to “Jump” from the endpoint of
one vector, to the start of the next.
• Point Intensity. Sets the intensity of a point in relation to the intensity of vectors.
• Minimum and Maximum Vector Brightness. Allows setting of Brightness and
Contrast levels.
• Scaling. Sets the software controllable screen size value.