Cisco Cisco 1 GHz GainMaker Amplifier Guía De Instalación
Balancing the Reverse Path
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While one technician in the field can monitor the received amplitude and determine
whether it deviates from reference or not, any variation in amplitude required at the
output of the receiver in the headend would typically be accomplished by a second
technician in the headend, who is in communication with the technician in the field.
whether it deviates from reference or not, any variation in amplitude required at the
output of the receiver in the headend would typically be accomplished by a second
technician in the headend, who is in communication with the technician in the field.
Note: When using a reverse sweep system such as this, be sure to consult the
manufacturer's guide to determine proper headend combining and to ensure proper
telemetry levels.
manufacturer's guide to determine proper headend combining and to ensure proper
telemetry levels.
To Prepare the Line Extender for Reverse Path Balancing
Complete the following steps for initial reverse path balancing.
1 Balance all of the reverse amplifiers off a given reverse input port for the node
1 Balance all of the reverse amplifiers off a given reverse input port for the node
being worked on. The reverse amplifiers should be balanced sequentially from
the node outward.
Note: Make sure the reverse fiber link has been properly balanced before
proceeding.
the node outward.
Note: Make sure the reverse fiber link has been properly balanced before
proceeding.
2 Ensure that the design value reverse output equalizer and reverse pads are
installed in the appropriate reverse slots in the line extender. Refer to the
following diagram.
Note: Record the pad values for each input port for later use.
following diagram.
Note: Record the pad values for each input port for later use.