User Manual

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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 to 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 that you label 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
ATTENTION
The IMC
-
21GA is only compatible with transceiver modules from
Moxa's SFP
-1G Series and SFP-1FE Series. If you are using the
SFP
-1FESLC-T, SFP-1FELLC-T, or SFP-1FEMLC-T, use version
V1.3 or above to ensure that the IMC
-21GA's media converter
functionality works properly.
ATTENTION
This is a Class 1 Laser/LED product. To avoid causing serious
damage to your eyes, do not stare directly into the laser beam.