QMS Magicolor WX User Manual page 233

Signal Pin No.
10
11
12
13
14
15
16
17
18
19-30
31
32
33
34
35
36
Notes to the Parallel Pinouts Table
n
Direction refers to the direction of signal flow as viewed from the
printer.
n
Return denotes "twisted-pair return" and is to be connected at
signal-ground level. When wiring the interface, be sure to use a
twisted-pair cable for each signal and never fail to complete con-
nection on the return side. To prevent noise effectively, these
cables should be shielded and connected to the chassis of the
system unit and printer, respectively.
n
All interface conditions are based on Transistor-Transistor Logic
(TTL) level. Both the rise and fall times of each signal must be
less than 0.2 microseconds.
n
Data transfer must be carried out by recognizing the ACKNLG or
BUSY signal.
Signal Description
Acnlg-
Busy+
Pe+
Select
Autofeed
Reserved
Ground
Ground
Vcc Test
Ground
Iprime
Fault-
Reserved
Reserved
Reserved
Selectin
Direction
Out
Out
Out
Out
In
-
-
-
-
-
In
Out
-
-
-
In