User's Manual

LMF to BTS Connection – continued
3-20 1X SC 4812T Lite BTS Optimization/ATP FEB 2005
PRELIMINARY
Table 3-7: Connecting the LMF to the BTS, I/O Panel LAN Connection
n Step Action
1 Connect the LMF Computer Platform Network Interface Card (NIC) to the 10Base–2/10Base–T
Converter or Hub.
2 Connect a Jack–Plug–Jack Configuration BNC “T” Connector to the 10Base–2/10Base–T
Converter or Hub (Figure 3-4).
3 Connect one BNC Plug of the COAXial Cable to one Jack of the BNC “T” Connector.
4
* IMPORTANT
1. In this step, do not disconnect the 50 Ω Terminator from either LAN IN Connector on the I/O
Panel (these terminations may be grounded with a Jumper Wire which is fastened to the I/O
Panel).
2. When this step is performed, the active 10Base–2 LAN will swap to the one with the
terminated LAN OUT Connector (LAN B in Figure 3-4).
At the top of the frame, remove the 50 Ω Terminator from one LAN OUT Connector on the I/O
Panel, and connect the remaining BNC Plug on the COAXial Cable to this LAN OUT Connector.
5 Connect the 50 Ω Terminator removed in Step 4, above, to the other jack of the BNC “T”
Connector on the Converter or Hub.
6 At the I/O Panel, remove the 50 Ω Terminator from the other LAN OUT Connector, and wait 30
seconds for the active LAN to swap to the one connected to the BNC “T”.
7 Replace the 50 Ω Terminator on the LAN OUT Connector from where it was removed in Step 6,
above.
3