Printronix

P9212, Setup Manual

Page: 172 / 206

A–6 Printer Specifications
Interfaces
Type Resident parallel (two) and serial (one)
Logic Levels TTL (parallel interfaces)
RS-232 (serial interface)
Data Format ASCII
Compatibility Centronics
Dataproducts
EIA RS-232-D
Buffer Size 512, 1024, or 2048 characters
Printing Rates
Printer throughput, in lines per minute (LPM), is a factor of the selected font.
These rates assume that the printing mechanism is the limiting factor, not the
data source. Printing speed is independent of the number of characters in the
character set repertoire. Print lines containing bold/emphasized (“shadow”)
printing, superscripts, subscripts, or elongated (double high) attributes will
print at not less than half the rates shown below.
Plotting speed for graphics is measured in inches/minute, and is calculated as
follows:
Shuttle Speed x Vertical Density
60,000 =
1
x
inches
minute
Plot Speed in
(8.33 milliseconds)
The hammer bank contains a thermal sensing feature that prevents damage
from overheating. When graphics plotting greater than 70% black is done
over extended periods of time, the thermal sensing feature reduces the print
rate to prevent damage.
Nominal print rates for the printer are charted in Table A–1.