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5–5Interfaces
Dataproducts Parallel Interface
Table 5–2. Dataproducts Parallel Interface Connector Pin Assignments
(with a 50-pin AMP HDH-20 Data Cable Connector)
Input Signals Output Signals Miscellaneous
Signal Pin Signal Pin Signal Pin
DATA
LINE 1
19
Return 3
READY 22
Return 6
CABLE VERIFY
45, 46
DAT
A LINE 2
20
Return 4
ONLINE 21
Return 5
GROUND 39
DAT
A LINE 3
1
Return 2
DEMAND/DATA REQUEST 23
Return 7
DAT
A LINE 4
41
Return 40
PARITY ERROR 27
Return 11
DAT
A LINE 5
34
Return 18
DAT
A LINE 6
43
Return 42
DAT
A LINE 7
36
Return 35
DAT
A LINE 8
28
Return 44
DATA STROBE 38
Return 37
PAPER INSTRUCTION 30
Return 14
BUFFER CLEAR
31
Return 15
Note: Pins not listed are not connected.
The length of the data cable from the host computer to the printer must not
exceed 40 feet (12 meters).