Cisco Model GS7000 4-Port Node 1 GHz with 42 54 Split インストールガイド

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Installing the Transponder 
 
4037424 Rev A 
17 
 
 
If you are running RCVR 1 and RCVR 2 as a redundant pair, attach the RF1 
cable to the Optical Receiver 1 "-20 dB test point" AND attach the RF2 cable to 
the Optical Receiver 2 "-20 dB test point." Route the cables appropriately as 
shown in the following illustration.