Printronix P9000 Series - Manual (Page 115)

6-17 Programming
Character Pitch 10 CPI
ASCII Hex Decimal
P-Series N/A N/A N/A
Serial ESC P 1B 50 27 80
Purpose Sets character pitch to 10 cpi.
Comment Control Code ESC X can also be used to select a character pitch of 10 cpi.
Refer to Print Mode/Pitch Selection on page 6-58.