First Alert ACTION T-1000 - Manual (Page 66)

Technical Specifications
Signal Return
P i n P i n S i g n a l Direction Description
1 6 -
OV
-
Logic ground level.
17
-
CHASSIS Printer's chassis ground, which is isolated
G N D -
from the logic ground.
1 8
-
N C
-
Unused.
1 9 - 3 0
-
GND
-
Twisted-pair return signal ground level.
3 1 INIT
-
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
t e r m i n a l
3 2 - ERROR
OUT This level becomes LOW when the printer
is in:
1) Paper-end state
2) Off line state
3) Error state.
3 3 G N D 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