User`s manual

7–115Digital Emulation
• Pn1 sets the pixel aspect ratio numerator.
• Pn2 sets the pixel aspect ratio denominator.
Pn1 and Pn2 are numeric parameters. A numeric parameter is a string of
characters in the 30H – 39H range that is evaluated by the printer as a
decimal number. If the parameter is a value larger than the 65535
maximum, the printer defaults to 65535.
The pixel aspect ratio defines the shape of the pixel needed to reproduce
the picture without distortion. This ratio is defined by two numbers, a
numerator (Pn1) and a denominator (Pn2). It is the ratio of the vertical
to the horizontal shape of the pixel. For example, an aspect ratio of 2:1
(or 200:100) represents a pixel twice as high as it is wide. The aspect
ratio multiplied by the Horizontal Grid Size (HGS) yields the ideal
Vertical Grid Size (VGS). That is:
Pixel Aspect Ratio x HGS = Ideal VGS.
Table 7–21 gives the aspect ratios supported by the printer.
Table 7–21. Aspect Ratios Supported by the LG06 and LG12
Aspect
Ratio
Sixel
Scale
HGS
Horiz.
Dots/Pixel
VGS
Vert.
Dots/Pixel
2.5:1 Full
2X
1/180
in
1/90 in
1
2
1/72 in
1/36 in
1
2
2:1 Full
2X
1/140
in
1/70 in
1
2
1/72 in
1/36 in
1
2
1:1 .5
Full
2X
1/140
in
1/70 in
1/35 in
1
1
2
1/144
in
1/72 in
1/36 in
1/2
1
2
When other aspect ratios (A/R) are requested, they are processed in the
following manner:
– An aspect ratio of less than 1.5:1 uses 1:1 A/R.
– An A/R equal to or greater than 1.5:1, but less than 2.25:1 uses
2:1 A/R.
– An A/R equal to or greater than 2.25:1 uses 2.5:1 A/R.