Cisco GS7000 Installation And Operation Manual page 134

Chapter 4 Setup and Operation
4x1 Reverse Configuration Module with Auxiliary Reverse RF Injection
All four ports are combined to a single reverse transmitter. An RF signal from an
external source can optionally be injected and coupled with the reverse RF inputs on
Ports 3/6 and routed to Transmitter 1.
Install the transmitter module in XMTR 1.
The following diagram illustrates reverse path signal flow in this configuration
module.
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