Printing Rates - IBM 6400 Setup Manual

RISC System/6000: For RS-232 attachment to the IBM RISC System/6000,
the following are required:
•
IBM Async cable EIA-232/V.24
•
Printer/terminal interposer EIA-232
•
Serial Cable Kit (PN 12H1204)
Coax/Twinax Interface Feature: Contact your IBM service representative for
attachment requirements.

Printing Rates

The printing speed of text is measured in lines per minute (lpm), and is a
function of the selected font and the vertical dot density. Printing speed is
independent of the number of characters configured in the character set
repertoire. Print rates for lines containing attributes such as bold or
emphasized printing, superscripts, subscripts, or elongated attributes will
decrease to not less than half the rates of the font without such attributes. The
exact print rate of lines containing these attributes depends on the specific
print job, but software maximizes the throughput by dynamically determining
which dot rows contain adjacent dots and must be printed in two strokes.
Table 12 list typical printing rates.
The reverse paper feed capability allows the printing of multiple densities on a
single line. This is useful in printing forms and text together or in mixing
different fonts on a print line. Use of multiple densities and reverse paper feed
also affects throughput.
PRINT QUALITY
DOT DENSITY CHARACTERS
(DPI) PER INCH
Note 1
CORRESPONDENCE
90 (180) x96
DATA PROCESSING
60(120) x72
HIGH SPEED
60(120) x 48
Note 1 A (B) x C, where:
Note 2 D (E) x F + G, where:
Table 12. 6400 Nominal Print Rates (1 of 2)
DOT
MATRIX
Note 2
500
10 7(13) x 9+3 200
12 6(11) x 9+3
15 (9) x 9+3
10 5(9) x 7+2 375
12 4(7) x 7+2
13.3 4(7) x 7+2
15 3(5) x 7+2
17.1 3(5) x 7+2
10 5(9) x 5+1 500
12 4(7) x 5+1
13.3 4(7) x 5+1
A is maximum horizontal dot density
B is horizontal dot placement density
C is vertical dot density
D is maximum number of dots that may be placed on
E horizontal positions
F is number of vertical dots for uppercase symbols
G is number of dots available for descenders
Power Consumption
PERFORMANCE
Uppercase Only Descenders & Underline LPM
LPM
1000 1500 2000 500
400 600 960 500
750 1125 1800 300
1000 1500 2000 428
1000 1500 2000
306 459 738
600 900 1440
865 1284 1714
257