Communication Ports
4.1Copper Ethernet Ports
WARNING
Electric shock hazard – risk of serious personal injury and/or equipment
interference
When shielded cables are used, make sure the shielded cables do not form a ground
loop via the shield wire and the RJ45 receptacles at either end. Ground loops can
cause excessive noise and interference, but more importantly, create a potential
shock hazard that can result in serious injury.
LEDs
Each port features a Speed and Link/Activity LED that indicates the state of the port.
1
Speed LED
2
Link/Activity LED
Figure4.2 RJ45 Port LEDs
LED State Description
Yellow The port is operating at 100
Mbps
Speed
Off The port is operating at 10 Mbps
Yellow (Solid) Link established
Yellow (Blinking) Link activity
Link/Activity
Off No link detected
Pin-Out
The following is the pin-out for the RJ45 male connectors:
Figure4.3 RJ45 Ethernet Port Pin Configuration
Pin Name Description
1 RX+ Receive Data+
2 RX- Receive Data-
3 TX+ Transmit Data+
4 Reserved (Do Not Connect)
22
RUGGEDCOM RS900
Equipment Manual, 11/2023, C79000-G8976-1024-16
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