IBM 6400 Series, Setup Manual

Page: 257 / 316

Power Consumption
257
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.
Table 12. 6400 Nominal Print Rates (1 of 2)
PRINT QUALITY
DOT DENSITY
(DPI)
Note 1
CHARACTERS
PER INCH
DOT
MATRIX
Note 2
PERFORMANCE
Uppercase Only
LPM
Descenders & Underline LPM
500 1000 1500 2000 500 1000 1500 2000
CORRESPONDENCE
90 (180) x96
10
12
15 7(13) x 9+3
6(11) x 9+3
(9) x 9+3
200 400 600 960 500 306 459 738
DATA PROCESSING
60(120) x72
10
12
13.3
15
17.1
5(9) x 7+2
4(7) x 7+2
4(7) x 7+2
3(5) x 7+2
3(5) x 7+2 375 750 1125 1800 300 600 900 1440
HIGH SPEED
60(120) x 48
10
12
13.3
5(9) x 5+1
4(7) x 5+1
4(7) x 5+1 500 1000 1500 2000 428 865 1284 1714
Note 1 A (B) x C, where: A is maximum horizontal dot density
B is horizontal dot placement density
C is vertical dot density
Note 2 D (E) x F + G, where: 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