Epson ES-300GS Guida Specifiche
EPSON ES-300GS
Signal
Timing charts
The figures below show the timing for bidirectional
The figures below show the timing for bidirectional
parallel interface as viewed from the scanner.
Pin
pin
19
STROBE
STROBE pulse
to
read
in or sand out data.
width must be
more than 0.5
at the
terminal.
2
20
IN/OUT
These
3
21
IN/OUT
of bits 1 to
4
22
DATA2
IN/OUT
5
Each
23
DATA3
6
2
4
DATA4
when data is logical
7
25
DATA5
and low when is
8
26
DATA6
logical 0.
9
27
DATA7
10
28
ACKNLG
pulse.
Low
that data
has been received and
the scanner is
11
29
When
signal is
high, the scanner
cannot
cannot
data.
The signal
during data entry
2) during scanning
3) when the scanner is
4) when the scanner
has an
has an
1 2 - 1 5
NC
Not used
16
ground
Scanner chassis
18
NC
Not used
Twisted pair
signal ground level
signal ground level
31
IN
When this
level
low. the
scanner is
to the
state
power is
on. This level is
usually High. The
than
OUT (from scanner to computer):
IN (from computer to scanner):
SCSI
Specifications
Interface type:
ANSI X3.131-1986 standard
The following functions are included:
The following functions are included:
BUS FREE phase
phase
SELECTION/RESELECTION phase
COMMAND phase
(Logical Unit number is fixed to 0 and
command link function is not supported)
DATA phase
Data in phase
Data out phase
STATUS phase
MESSAGE phase
MESSAGE IN phase
MESSAGE OUT phase
condition
RESET condition
denotes the twisted-pair return, to be
at signal ground level. For interface wiring be
sure to use a twisted-pair cable for each signal, and to
complete the connection on the
side. These cables
should be shielded and the ground connected to the
chassis of the host computer and the scanner.
All interface conditions are based on
All interface conditions are based on
level.
Logic level:
level compatible
Electrical standard: As per ANSI X3.131-1986 standard
ID setting
ID setting
Selectable from 0 to 7 with push buttons
(8
should not be selected; 9 selects the
or
emulation mode)
Scanners
4/96
EPSON ES-30OGS-3