Epson T-1000 User Manual - Page 66

Printer's chassis ground, which is isolated, This level becomes LOW when the printer - terminator 2

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Technical Specifications Signal Pin 16 17 18 19-30 31 32 33 34 35 36 Return Pin - - - - - S i g n a l Direction Description OV - Logic ground level. CHASSIS GND - Printer's chassis ground, which is isolated from the logic ground. NC - Unused. GND INIT - Twisted-pair return signal ground level. I N When level becomes LOW, the printer controller is reset to its power-up state and the print butter is cleared. This level is usually HIGH; its pulse width must be more than 50 µs at the receiving terminal ERROR OUT This level becomes LOW when the printer is in: 1) Paper-end state 2) Off line state 3) Error state. GND Same as for Pins 19 - 30. NC - Unused. - - Pulled up to +5 V through 3.3 K resistance. SLCT IN IN The DC1/DC3 code is valid only when this signal is HIGH. (Internal fixing can be carried out with DIP switch pin 2-1. The level of this signal is factory-set to LOW.) 6-6 Technical Specifications

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Technical Specifications
Signal
Return
Pin
Pin
Signal
Direction
Description
16
-
OV
-
Logic ground level.
17
-
CHASSIS
Printer's chassis ground, which is isolated
GND
-
from the logic ground.
18
-
NC
-
Unused.
19-30
-
GND
-
Twisted-pair return signal ground level.
31
INIT
-
IN
When level becomes LOW, the printer
controller is reset to its power-up state
and the print butter is cleared. This level
is usually HIGH; its pulse width must be
more than 50 μs at the receiving
terminal
32
-
ERROR
OUT
This level becomes LOW when the printer
is in:
1) Paper-end state
2) Off line state
3) Error state.
33
GND
Same as for Pins 19 - 30.
34
NC
35
-
-
-
Unused.
-
Pulled up to +5 V through 3.3 K
resistance.
36
-
SLCT
IN
IN
The DC1/DC3 code is valid only when
this signal is HIGH. (Internal fixing can
be carried out with DIP switch pin 2-1.
The level of this signal is factory-set to
LOW.)
6-6
Technical Specifications