Korenix
JetNet 3810G(f)/ 3806G/ 3710G
14
2.6 Wiring the Ethernet Ports
JetNet 3810G(f)/ 3806G/ 3710G Industrial Gigabit PoE Switch support 8/4 RJ-45 ports
with automatic MDI/MDI-X crossover, PoE Injector, and automatic 10/100Mbps data
rate sensing for 10Base-T or 100Base-TX connections. Automatic MDI/MDI-X
crossover allows you to connect to other switches, hubs, or workstations, without
regard to using straight-through or crossover cabling. For JetNet 3810G/ 3806G/
3710G model, the switch also provides two 10/100/1000 Base-TX uplinks.
Port 1 to port 8/4 also provides Power over Ethernet function that delivers DC 48V
power through the spare pairs to power the PD.
The following figures depict the schematic diagram of straight-through and crossover
cabling. Note that crossover cables simply cross-connect the transmit lines at each
end to the receive lines at the opposite end.
Straight-through Cabling Schematic
Cross-over Cabling Schematic
Note
: that Ethernet cables use pins 1, 2, 3, and 6 of an 8-pin RJ45 connector. The
signals of these pins are converted by the automatic MDI-X function, as shown in the
table below:
Pin MDI-X
Signals
MDI Signals
1
RD+
TD+
2
RD-
TD-
3
TD+
RD+
6
TD-
RD-
Connect one side of an Ethernet cable into any switch port and connect the other
side to your attached device. The green LNK LED will light up when the cable is
correctly connected. Refer to the LED Indicators section for descriptions of each LED
indicator. Always make sure that the cables between the switches and attached
devices (e.g. switch, hub, or workstation) are less than 100 meters (328 feet).
