IBM 6400-D Generation II Series Setup Manual page 129

NOTE: The length of the data cable from the host computer to the printer
should not exceed 10 meters (32 feet). For greater data reliability, use
a cable of 1.8 meters (6 feet) or less.
Table 4. Printer 1284 Connector Signals
Pin Source of Data
1 Host
2 Host/Printer
3 Host/Printer
4 Host/Printer
5 Host/Printer
6 Host/Printer
7 Host/Printer
8 Host/Printer
9 Host/Printer
10 Printer
11 Printer
12 Printer
13 Printer
14 Host
15
16
17
18 Printer
19
20
21
22
23
24
25
26
Type of Mode
Compatible
nStrobe Host/Clk
Data 1 (LSB)
Data 8 (MSB)
nAck
Busy PtrBusy
PError AckDataReq
Select Xflag
nAutoFd HostBusy
Not Defined
Logic Gnd
Chassis Gnd
Peripheral Logic High
Signal Ground (nStobe)
Signal Ground (Data 1)
Signal Ground (Data 2)
Signal Ground (Data 3)
Signal Ground (Data 4)
Signal Ground (Data 5)
Signal Ground (Data 6)
Signal Ground (Data 7)
Nibble Byte
Host/Clk
Data 2
Data 3
Data 4
Data 5
Data 6
Data 7
PtrClk PtrClk
PtrBusy
AckDataReq
Xflag
HostAck
Signals
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