H3C Technologies H3C SR6600-X - Manual (Page 72)

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Figure 46 Connecting the 4E1/8E1 splitter cable (1)
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If the 75-ohm 4E1/8E1 splitter cable need be extended, you can connect the BNC connector
of the cable to the coaxial cable connector and connect the other end of the coaxial cable
connector to the peer device through a 75-ohm E1 trunk cable.
Figure 47 Connecting the 4E1/8E1 splitter cable (2)
3. Examine the LINK LED after connection.
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If the LED is on, the optical fiber link is present.
{
If the LED is off, a fault has occurred on the link and the signal is out of synchronization. In this
case, examine the link.
...