Ross Opengear FED-6943, User Manual, Page: 34 / 92

4–4 • FES-6942 Setup Fiber Ethernet Switch Transceivers User Manual (Iss. 04)
Cabling for the FES-6942-20/40/80
The FES-6942 is used with the 8320AR-056 Full Rear Module. Each rear module occupies two
slots and accommodates one card. This rear module provides one single mode optical input, one
single mode optical output, and four RJ45 Ethernet 10/100/1000 ports.
If your FES-6942 is a high sensitivity transceiver, the card product number includes an “H”. For
example, FES-6942-27H.
The optical distance the optical ports of your card support are dependent on the card model. The
suggested distances are specified in
Table 4.3 . To calculate your fiber path link budget, refer to
Table 4.4 on page 4-8 and Table 4.5 on page 4-9 for optical budget specifications.
Table 4.3 FES-6942 Supported Optical Distances
Model Cable Length
FES-6942-20 20km
FES-6942-40 40km
FES-6942-80 80km
Figure 4.2 Cable Connections for the FES-6942-20 Figure 4.3 Cable Connections for the FES-6942-40
Figure 4.4 Cable Connections for the FES-6942-80
Ethernet Port 3
Ethernet Port 4
Ethernet Port 2
Ethernet Port 1
1270 - 1610nm
1310nm
Ethernet Port 3
Ethernet Port 4
Ethernet Port 2
Ethernet Port 1
1270 - 1610nm
1310nm
Ethernet Port 3
Ethernet Port 4
Ethernet Port 2
Ethernet Port 1
1270 - 1610nm
1550nm