ML690/ML691 User’s Guide 37
There are two CHARACTER PITCH indicator lights:
The sequence of lights shows which character pitch is 
active:
 10 CPI
 12 CPI
  15 CPI
  17 CPI
  20 CPI
  PROPORTIONAL
( = light off,  = light on,  = blinking light)
The default CHARACTER PITCH is “10 CPI.”
To change the CHARACTER PITCH press the CHR PITCH 
key. Each time the key is pressed the light sequence 
above the CHARACTER PITCH key changes until all the 
options have been cycled through.
Character Pitch
Important!
Front panel settings for character pitch are normally 
overridden when the SI command is received from 
your software.
Character pitch determines how many characters will 
print on each line. You can choose a specic xed 
width for each character in characters per inch (CPI), 
or Proportional. The higher cpi settings are often 
used for spreadsheets.
Proportional (PROP) sets character widths based on 
the character itself: e.g., the letter i is assigned a 
narrower width than the letter m. This provides a 
more polished, typeset appearance.
To select Proportional, press the CHARACTER PITCH 
key until both of the CHARACTER PITCH lights are 
ashing.
To select non-proportional, press the CHARACTER 
PITCH key until the printer shows the light sequence 
for the cpi value you want to use.