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1. Construct a cable wired as outlined inTable 13.
Table 13: Cable Wiring for Printer Port LPT2 Use
Printer Signal
Name
Line Feed
Data 0
Data 1
Data 2
Data 3
Data 4
Data 5
Data 6
Data 7
PE
STROBE
SLCT
SLIN
INIT
Printer Port
2
Ground
1.
Invert the signals on these lines.
2.
Connect these lines with the shield lines wrapped around the signal lines.
3. Connect the cable between the printer port and the parallel interface connector of the SKB
switch.
4. Connect a 5 V power source to the power connector of the SKB switch
5. IMPoConnect a ground wire between the PC chassis and the power source ground.
APPLICATION NOTE: Custom SKB with D Subminiature Style connectors
A variant of the SKB has been developed that has a more ruggedized connector interface. That vari-
ant is described in this application note.
All control information contained in the body of this manual applies to this variant. Hence, this appli-
cation note addresses physical features only.
Register
Bit
(Hex
PC Connector Pin
Address)
Number
1
14
(37A) 1
(378) 0
2
(378) 1
3
(378) 2
4
(378) 3
5
(378) 4
6
(378) 5
7
(378) 6
8
(378) 7
9
(379) 5
12
1
1
(37A) 0
(379) 4
13
1
17
(37A) 3
1
16
(37A) 2
18, 19, 20, 21, 22,
23, 24, 25
Application Notes
SKB Signal
SKB Pin
20
/STROBE
14
D0
2
D1
3
D2
16
D3
17
D4
5
D5
6
D6
19
D7
8
BUSY
12
R/W
9
ERROR
22
/HOME
11
/SOP
1, 4, 7, 10, 13,
Shield
15, 18, 21, 24
Power Source
Power Ground
Ground
91
Name
2
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