Printronix MVP Series High Resolution Raster Plot Syntax, Scaling Graphics, Dot Density by Mode

High Resolution Raster Plot Syntax

The proper command syntax for high resolution graphics is:

1)Even dot center control sequence . . . plot data . . . line terminator followed by:

2)Odd dot center control sequence . . . plot data . . . line terminator

For Example,

EOT (data) LF

ENQ (data) LF

NOTE: When plotting even dot centers using EOT, ESC Y (line feed and form feed commands denote end of plot data only), the paper will not advance. When plotting odd dot centers (ENQ, ESC Z), line feed and form feed control character denote end of plot data, and paper will advance to the next plot line or to top–of–form.

Scaling Graphics

Scaling graphics is possible by changing print modes. Each mode has a fixed dot density in dots per inch, which results in a different physical length for the same raster plot data when it is plotted in different print modes. For example, a given set of plot data that prints a one inch long line in Mode 1 (100 dots per inch) would print a line two inches long in Mode 4 (50 dots per inch). The different length occurs because the same number of dots are printed at different dot densities.Table 5–3 lists all the modes and their dot densities in dots per inch.

Table 5–3. Dot Density by Mode

Mode No.	Mode	Dots/Inch	Mode selected by
			ASCII code
1	Word Processing	100	ESC P
	Data Processing	60	ESC R
2
3	Compressed Print	62.5	ESC V
4	High Speed Plot	50	front panel switch
5	Condensed Print	100	SI or ESC SI
6*	Expanded Print	60	SO or ESC SO

* Mode 6 operable only if Configuration Option 20.0 is selected

5–6 Graphics