Moxa IMC-21GA-LX-SC [7/12] Basesfp fiber port connection

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1000BaseSFP Fiber Port Connection

The Gigabit Ethernet ports on the IMC-21GA are 1000BaseSFP Fiber ports,

which require using Gigabit mini-GBIC fiber transceivers to work

properly.

The concept behind the LC port and cable is 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 data from device II to device I,

for full-duplex transmission.

Remember to connect the Tx (transmit) port of device I to the Rx (receive)

port of device II, and the Rx (receive) port of device I to the Tx (transmit)

port of device II. If you make your own cable, we suggest labeling the two

sides of the same line with the same letter (A-to-A and B-to-B, as shown

below, or A1-to-A2 and B1-to-B2).

LC-Port Pinouts

LC-Port to LC-Port Cable Wiring

1000BaseSX/LX Fiber Port (IMC-21GA-SX-SC,

IMC-21GA-LX-SC)

The concept behind the SC port and cable is 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 data from device II to device I,

for full-duplex transmission.

All you need to remember is to connect the Tx (transmit) port of device I

to the Rx (receive) port of device II, and the Rx (receive) port of device I

to the Tx (transmit) port of device II. If you make your own cables, we

suggest labeling the two sides of the same line with the same letter

(A-to-A and B-to-B, as shown below, or A1-to-A2 and B1-to-B2).

SC-Port Pinouts

SC-Port to SC-Port Cable Wiring