B-1
Appendix B Making of Ethernet Cable
It introduces the power supply mode of W140A Ethernet and making of Ethernet
cables.
B.1 W140A System Application Modes
W140As are generally installed outdoors, as on roofs and special poles. The installation
environment is complicated, AC power is unsuitable, so Ethernet power supply (PoE)
is used. The system application mode is shown in Figure B.1-1.
AC
AP
Straight-through
Ethernet cable
/48V DC
Straight-through
Ethernet cable
Crossover
Ethernet cable
( RJ45J)
( C-RJ45-001 )
Straight-through Ethernet cable
W201P
Straight-through
Ethernet cable
/48V DC
AP
AP
Straight-through power
Ethernet cable
/48V DC
(C-RJ45-001)
(C-RJ45-001)
Internet
Ethernet switch
( RJ45)
(RJ45)
W201P
W201P
Straight-through
Ethernet cable
(RJ45)
Power Source End of the Ethernet Power Supply (PoE)
Figure B.1-1 W140A System Application
In Figure B.1-1, Ethernet cables are: straight through Ethernet cable, straight through
Ethernet power cable and crossover Ethernet cable. In practical applications, AP and
AC may come from different producers, so the network cables should be determined
according to the detailed configurations.
According to the Ethernet specifications, 100 Base-T Ethernet features less than 100m
transmission distance and 10 Base-T Ethernet features not greater than 300m
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