Printronix MVP Series User Manual page 62

Option 21 — Vertical Dot Density
Discussion
Option 21 permits a four percent increase in vertical dot density. (The
Density Option paper feed pulley must be installed for proper operation.)
MVP/L150
Option
Number
.0
.1
150B/L150B
Option 21 must be set to 21.0.
4–10
Display Configuration
Description
21.0 Enable standard P–Series compatible vertical dot density (default).
21.1 Enable increased vertical dot density (with Density Option paper
feed pulley installed).
Configuration