Connecting devices, Building an ethernet crossover cable, Build cables or loopback plugs – Comtrol RPSH-ia User Manual
Page 6: Correct types of cables, Crossover” ethernet cable

RocketPort® Serial Hub ia (RPSH-ia) Hardware Installation
6
Connecting Devices
•
Remove and reinstall the driver.
•
If you have a spare RocketPort Serial Hub ia, try replacing RocketPort Serial
Hub ia units. See the
discussion.
Note: If this corrects the problem, the RocketPort Serial Hub ia you have
removed from service may be defective or in need of repair.
•
If you are unable to resolve the problem,
.
Connecting Devices
Use the following discussion to connect asynchronous serial devices to the
RocketPort Serial Hub ia ports.
Make sure that you have configured the ports using the driver for the
correct communications mode before connecting any devices. The default
mode in the drivers is RS-232. There is a remote possibility that
connecting a peripheral for the wrong mode could damage the
peripheral.
1.
Install or reconfigure the driver using the
documentation or the driver readme file.
2.
Connect your devices to Ports 1 or 2 for each RocketPort Serial Hub ia using
the appropriate cable. You can build your own cables using the
Building Straight-Through Cables
discussions.
Note: Use the hardware manufacturer’s installation documentation if you need
help with connector pinouts or cabling for the peripheral device.
Building an Ethernet Crossover Cable
If you are connecting from the 10/100Base-T connector on
the RocketPort Serial Hub ia directly to the NIC card in the
server, you need a crossover cable. Use the following
information to build a cable or purchase a cable.
Caution
Pin
Connects to Pin
1
3
2
6
3
1
6
2
Pin 1
Pin 6
Receptacle
Pin 1