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Signal
Return
Pin
Pin
18
-
19-30
-
31
32
-
33
-
34
-
35
-
36
-
NOTE:
The parallel connector is a DDK type DHA-36 or equivalent.
The column heading 'DIRECTION' refers to the direction of signal flow as viewed
from the C82315* interface.
'RETURN' denotes the twisted-pair return, to be connected at signal ground level.
For the interface wiring. be sure to use twisted-pair cable for each signal and to
complete the connection on the return side. The cable should be shielded and
connected to the chassis of the host computer and printer.
All interface conditions as based on TTL levels. Both the rise and the fall times
of each signal must be less than 0.2 u sec.
Parallel
Signal
Cable
Pin
NC
21-24
GND
16
INIT
15
ERROR
GND
25
NC
HIGH
SLCTIN
17
28
Direction
Not used
Twisted
returns listed above
Defined to reset and
IN
dear the printer
when
SET AND CLEAR
ARE NOT SUP-
PORTED BY THE
C82315*, As the IBM
host cannot be in-
terrupted by this
signal. An ACKNLG
is generated for
handshaking.
This signal goes
OUT
LOW when the
printer is in an error
state such as out Of
p a p e r .
Logic ground
used
Not
Pulled up to +5v
through a 3.3K ohm
resistance
NOT SUPPORTED
Description
ground
pair
LOW: THE RE-
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