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3.2 RJ45 Ethernet Ports
The RS900L has several 10/100Base-TX ports that allow connection to standard Category 5 (CAT-
5) unshielded twisted-pair (UTP) cable with RJ45 male connectors. The RJ45 receptacles are
directly connected to the chassis ground on the unit and can accept CAT-5 shielded twisted-pair
(STP) cables. If shielded cables are used, care must be taken to ensure the shielded cables do not
form a ground loop via the shield wire and the RJ45 receptacles at either end. The figure below
shows the shows the RJ45 port pin-out and LEDs.
Figure 10 - RJ45 port pin-out and LEDs
Pin
Signal
1
2
3
4
No Connection
5
No Connection
6
7
No Connection
8
No Connection
Case
Shield (Chassis Ground)
Table 6 - RJ45 port pin-out
Status LED
Speed LED
Link LED
Table 7 - RJ45 port LED description
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2007 RuggedCom Inc. All rights reserved
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+Rx
-Rx
+Tx
-Tx
Colour
Yellow
Yellow
17
Activity
Off
On
Solid
Link Established
Blinking
Tx/Rx Activity
Comments
10 Mbps
100 Mbps
Rev101
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