User`s guide

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Appendix C. Connecting Devices to RJ45 Serial Ports
This section describes the cables and adapters that are used to connect common
devices to the RJ-45 serial ports on a standard TSM Series unit or RSM-8R Series unit.
For information regarding other WTI cables and adapters, please refer to the "Serial
Cables and Adapters" document, which can be found on the WTI Web Site at:
http://www.wti.com/guides/serialcables+adapters.pdf
C.1. Straight RJ-45 Cables and Rollover RJ-45 Cables
The connection examples described in this section include the use either an RJ-45
Straight cable or an RJ-45 Rollover cable. The difference between the two types of
cables is the way that the pins in the connectors at each end of the cable are linked to
each other.
In Straight Cables the pins on each connector are linked to the same pin number on the
connector at the other end of the cable; for example, Pin 1 on the right hand connector
is linked to Pin 1 on the left hand connector, as shown in Figure C.1 below.
For Rollover Cables, the order of the pins is reversed; Pin 1 on the right hand connector
would be linked to Pin 8 on the left hand connector, as shown in Figure C.2.
WTI RJ-45 Straight cables are available in three different models:
• RJX-7-15: 15 Feet Long
• RJX-7-25: 25 Feet Long
• RJX-7-30: 30 Feet Long
WTI also offers an RJ-45 Rollover cable:
• RJ-ROLL
Pin 1
Pin 8
Pin 1
Pin 8
Figure C.1: Straight Cables
Pin 1
Pin 8
Pin 8
Pin 1
Figure C.2: Rollover Cables