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CONNECTIONS
FIGURE 1: POINT-TO-POINT GIGABIT FIBER LINKS
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LED INDICATIONS
RUN Indicator
ON: The unit is in working
condition
OFF: The unit is not working
PWR Indicator
ON: Power supply on
OFF: Power supply off
G1 Indicator
ON: Network connected
Flashing: Network activity
OFF: Network disconnected
10/100/1000M Indicator
ON: The unit is connected to a
1000M network
OFF: The unit is disconnected or
connected to a 10/100M network
Link/Act Indicator
ON: The unit is connected to a
network
Flashing: Sending/receiving data
OFF: The unit is disconnected
from a network
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RJ45 PIN ASSIGNMENTS
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INPUTS/OUTPUTS
Power Input
V1+/V1-: Power Supply Input (12 to 48 VDC)
RJ45 (Ethernet)
Terminal Block
1 TX+
2 TX-
3 RX+
6 RX-
4,5,7,8 (Not Connected)
-
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COMPATIBLE SFP MODULE
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TROUBLESHOOTING
Make sure the power (12 to 48 VDC) is ON.
Check LEDs and connections and be sure they are correct.
Perform a ping or loopback test by using CommFront’s Serial-TCP/IP free software (download link:
https://www.commfront.com/pages/downloads
):
1) Connect two or more USW-2203 (SFP) via optical fiber links.
2) Connect one PC to one of the USW-2203 (SFP)’s Ethernet port (RJ45) and run the Serial-TCP
software (act as a Server).
3) Connect another PC to another USW-2203 (SFP)’s Ethernet port (RJ45) and run the Serial-TCP
software (act as a Client).
4) Connect both Serial-TCP software (Client to Server) and then send commands from one side,
and you should receive the same commands on the other side.
Model
SM / MM
Connectors
Wavelength
TX Distance
SFP-MM850-LC-550M
Multi-Mode
LC
850nm
0.3 miles (550m)
SFP-SM1310-LC-20KM
Single-Mode
LC
1310nm
12.4 miles (20km)
SFP-SM1310-LC-40KM
Single-Mode
LC
1310nm
25 miles (40km)
SFP-SM1310-LC-60KM
Single-Mode
LC
1310nm
37 miles (60km)
SFP-SM1550-LC-80KM
Single-Mode
LC
1550nm
50 miles (80km)
SFP-SM1550-LC-100KM Single-Mode
LC
1550nm 62
miles
(100km)
SFP-SM1550-LC-120KM Single-Mode
LC
1550nm 75
miles
(120km)