Comtrol RocketPort PCI series - Manual (Page 9)

9
Building DB25 Male Loopback Plugs
Building DB25 Male
Loopback Plugs Loopback connectors are plugs, with pins wired
together as shown, that are used in conjunction with
the RocketPort diagnostic software to test serial
ports.
This loopback plug is used with the standard 8- and
16-port DB25 interface modules. To build a DB25
loopback plug for an RS-232 serial connection, wire
the following pins together:
• Pins 2 to 3
• Pins 4 to 5 to 22
• Pins 6 to 8 to 20
To build a DB25 loopback plug for an RS-422 serial
connection, wire the following pins together.
• Pins 15 to 19
• Pins 17 to 25
RJ45 Interfaces The RocketPort PCI/4-port RJ45, an Octacable model, and the Rack Mount
interface module are available with RJ45 connectors.
RJ45 Pinouts for the
Octacable and Rack
Mount Interface
Module The following figures provide pinout information for the RJ45 connectors used on
the Octacable and Rack Mount interface module.
Note: Ring indicator is not supported on the RJ45 connector.
Pin 13 Pin 1
Pin 14 Pin 25
RS-232 Only (Back View)
Pin 25 Pin 14
Pin 1 Pin 13
RS-422 Only (Back View)