ATTENTION
Before connecting the device to the DC power
inputs, make sure the DC power source voltage is
stable.
Communication Connections
IE-MC-VL models have one 10/100BaseT(X) Ethernet port, and one
100BaseFX (SC or ST type connector) fiber port.
10/100BaseT(X) Ethernet Port Connection
The 10/100BaseT(X) ports located on the Media Converter’s front
panel are used to connect to Ethernet-enabled devices.
Below we show pinouts for both MDI (NIC-type) ports and MDI-X
(HUB/Switch-type) ports, and also show cable wiring diagrams for
straight-through and cross-over Ethernet cables.
RJ45 (8-pin, MDI) Port Pinouts RJ45 (8-pin, MDI-X) Port Pinouts
1
8
Pin
Signal
1
2
3
6
Tx+
Tx-
Rx+
Rx-
1
8
Pin
Signal
1
2
3
6
Rx+
Rx-
Tx+
Tx-
RJ45 (8-pin) to RJ45 (8-pin) Straight-Through Cable Wiring
Straight-Through Cable
RJ45 Plug Pin 1
Switch Port
RJ45
Connector
RJ45
Connector
Tx+
Tx-
Rx+
Rx-
NIC Port
Cable Wiring
3
3
6
6
1
1
2
2
Rx+
Rx-
Tx+
Tx-
RJ45 (8-pin) to RJ45 (8-pin) Cross-Over Cable Wiring
Cross-Over Cable
RJ45 Plug Pin 1
Switch Port
(NIC Port)
RJ45
Connector
RJ45
Connector
Tx+
Tx-
Rx+
Rx-
(Rx+)
(Rx-)
(Tx+)
(Tx-)
(Tx+)
(Tx-)
(Rx+)
(Rx-)
Switch Port
(NIC Port)
Cable Wiring
3
1
6
2
1
3
2
6
Rx+
Rx-
Tx+
Tx-
100BaseFX Ethernet Port Connection
The concept behind the SC port and cable is quite straightforward.
Suppose you are connecting devices I and II. Contrary to electrical
signals, optical signals do not require a circuit in order to transmit
data. Consequently, one of the optical lines is used to transmit data
from device I to device II, and the other optical line is used transmit
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