Teknor Industrial Computers PCI-934, Technical Reference Manual

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Installing Peripherals
8-3
8.2.2 SERIAL PORT 2 (J7)
By default the Serial Port 2 is set as RS-232. In this configuration, it functions the same way
as Serial Port 1, with the same pinout. However, the Serial Port 2 may be set for RS-422/RS-
485 operations, using the BIOS Setup program.
RS-232 Mode
As a RS-232 port, and with the IBM 9-pin DSUB Standard, Serial Port 2 is 100%
compatible with the IBM-AT serial port. To output RS-232 signals from the 10-pin
onboard connector to a 9-pin DSUB connector, please refer to the following diagram:
TEKNOR offers a 10-pin header to 9-pin DSUB cable for IBM-AT compatibility. This can
be purchased from TEKNOR or a cable can be made with a flat cable, a 10-pin flat cable
crimp header and a 9-pin DSUB flat cable crimp connector. The direct crimp design
offered by TEKNOR allows the simplest cable assembly. All these cables are available
from TEKNOR by contacting the Sales department.
Fem ale
10-pin Header
Onb oard
10-pin Header
Cut W ire #10
6
9
5
1
R S-232 Serial P ort Flat C ab le (150-019)
18''
Pin 1
6
7
8
9
1
3
5
7
9
D S R
R T S
C T S
R I
D C D
R X
T X
D T R
G N D
Signal Signal
9 -pin M a le D S U B C on n e c to r a cc o rd in g to IB M -AT sta n da rd O n b o a rd S e ria l P o rt C o n ne c to r
Pin # Pin #
1
2
3
4
5
2
4
6
8
1 0
I
I
O
O
-
I
O
I
I
-
I
O
I
I
I
I
O
O
-
D C D
R X
T X
D T R
G n d
D S R
R T S
C T S
R I
N .C .
Signal Signal
Pin # Pin # I/O I/O I/O I/O
1
9
2
10