LX-300+/1170
Revision C
PRODUCT DESCRIPTION
Interface Specifications
21
1.3 Interface Specifications
LX-300+/1170 provides bi-directional 8 bit parallel interface and serial interface. Optional
interface board is not supported on this model.
1.3.1 Parallel Interface (Forward Channel)
o
Transmission mode:
8 bit parallel
IEEE-1284 compatibility mode
o
Adaptable connector:
57-30360 (Amphenol) or equivalent
o
Synchronization:
-STROBE pulse
o
Handshaking:
BUSY and -ACKLG signals
o
Signal level:
TTL compatible
(IEEE-1284 level 1 device)
Figure 1-6. Data Transmitting Timing
Table 1-10. Parameter
Parameter
Minimum
Maximum
Condition
V
OH
*
--
5.5V
V
OL
*
-0.5V
--
I
OH
*
--
0.32mA
V
OH
=2.4V
I
OL
*
--
12mA
V
OL
=2.4V
C
O
--
50pF
V
IH
--
2.0V
V
IL
0.8V
--
I
IH
--
0.32mA
V
IH
=2.0V
I
IL
--
12mA
V
IL
=0.8V
C
I
--
50pF
NOTE: * Logic-H signal is 2.0V or lower when the printer is off and the signal
is 3.0V or higher when the printer is on. The receiver has impedance
which is equivalent to 7.5 k
Ω
.
Table 1-11. Maximum & Minimum Timings for Data Transmission
Parameter
Minimum
Maximum
t
setup
500 nsec
--
t
hold
500 nsec
--
t
stb
500 nsec
--
t
ready
0
--
t
busy
--
500 nsec
t
reply
--
--
t
ack
500 nsec
10 us
t
nbusy
0
--
t
next
0
--
t
tout
*
--
120 nsec
t
tin
**
--
200 nsec
NOTE: * Rise and fall time of output signals.
** Rise and fall time of input signals.
Содержание LX-1170
Страница 1: ...EPSONLX 300 1170 9 pin Serial Impact Dot Matrix Printer SEDM997003 SERVICE MANUAL LX 300 LX 1170 ...
Страница 8: ...C H A P T E R 1 PRODUCTDESCRIPTION ...
Страница 44: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Страница 60: ...C H A P T E R 3 TROUBLESHOOTING ...
Страница 69: ...C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...
Страница 89: ...LX 300 1170 Revision C Disassembly and Assembly Disassembly and Assembly 89 ...
Страница 90: ...C H A P T E R 5 ADJUSTMENT ...
Страница 98: ...C H A P T E R 6 MAINTENANCE ...
Страница 103: ...C H A P T E R 1 9 7 APPENDIX ...
Страница 112: ...LX 300 1170 Revision C Appendix Component Layout 112 C294 MAIN B BOARD Figure 7 3 Component Layout C294 MAIN B Board ...
Страница 114: ...LX 300 1170 Revision C Appendix Component Layout 114 C294PNL BOARD Figure 7 6 Component Layout C294PNL ...
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