Specifications

Chapter 1: Overview of the ZVG
1 – 3
B. Specifications
X and Y Output Voltages
Jumper selectable to between 6v full scale and 12v full scale. On board adjustments
for individual control of X and Y sizing, along with individual centering of the X
and Y axes. A software adjustable scale setting is available using
ZVGTWEAK.EXE.
Z Axis Output Voltage
Factory settings: 1v minimum intensity, 4v maximum intensity. 0v used for blank-
ing. Minimum and Maximum values are user adjustable using ZVGTWEAK.EXE to
between 0v and 4.8 volts.
Pincushion Correction
Jumper selectable to enable / disable Y axis pincushion correction. Pincushion cor-
rection is designed to correct for the WG 6101 series color X/Y monitors. When
pincushion correction is enabled, a vertical trapezoid adjustment is also available.
Linearity Correction (Edge Bloom)
Jumper selectable to enable / disable X and Y axis linearity correction. Linearity
correction is designed to correct for the WG 6101 series color X/Y monitors.
Drawing Speeds
Four pre-defined, jumper selected, drawing speeds are factory programmed into the
ZVG.
• 15us per inch. Used for the G05, WG2000, G08, and Amplifone monitors.
• 30us per inch. Used for the WG 6101 series monitors. Can also be used to run
the Vectrex at high speeds. (Should work but may cause some tearing, this will
not hurt the Vectrex or ZVG.)
• 40us per inch. Running Vectrex at lower speeds, if 30us causes too much tearing.
• 50us currently unused.
Note: Microseconds per inch refer to the speed the trace moves one inch on a 19” monitor.
Since vector monitors come in different sizes, and with different voltage require
-
ments, it’s difficult to define a standard for draw speeds. We’ve chosen the speed a
trace moves one inch on a 19” display as a standard rating for setting the ZVG
jumpers. For screens like the Vectrex, the G05-802 15” B&W monitor, and the 25”
Amplifone, this actual speed would have to be scaled according to the size of the
screens. But note the length of time it takes to move the trace the full width of the
display will remain a constant, per jumper setting, regardless of screen size.