, 1.3 Interface
This printer has a built-in, 8-bit centronics parallel interface.
1.3.1 Parallel Interface
Data transmission mode
8-bit parallel
Synchronization
Controlled by external STROBE pulse.
Handshaking
Controlled by ACKNLG and BUSY signals.
Logic level
compatible
Connector plug
57-30360 (Amphenol) or equivalent
It is recommended that the interface cable be as
as possible
feet maximum).
DATA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STROBE
tl
t l
t l
t2
t3
: 0.5 us (min.)
t2: 7 us
t3: 5 us
Figure 1-6. Data Transmission Timing
Table 1-14. Connector Pin Assignments and Signal Functions
Signal
Return
Signal
Pin No. Pin No.
Dir.
Description
Name
1
19
STROBE
In
STROBE pulse to read data in. Pulse width must be more than
0.5
at receiving terminal.
2
20
DATA 1
In
These signals represent the 1st to 8th bits of parallel data,
3
21
DATA 2
In
respectively. Each signal is HIGH when data is a logical 1 and
4
22
DATA 3
In
LOW when a logical O.
5
23
DATA 4
In
6
24
DATA 5
In
7
25
DATA 6
In
8
26
DATA 7
In
1-15
Summary of Contents for FX 1170 - B/W Dot-matrix Printer
Page 1: ...EPSON EPSON TERMINAL PRINTER FX 870 1170 SERVICE MANUAL 4001461 REV A ...
Page 5: ... f REVISION SHEET REVISON DATE ISSUED CHANGE DOCUMENT A June 15 1992 1st issue 7 v ...
Page 11: ...REV A 4 80 column model 136 column model Figure 1 1 External View of the FX 870 1170 r 1 2 ...
Page 128: ...REV A Figure 6 1 Lubrication Points 6 3 ...
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Page 138: ...EPSON ...
