Cisco GainMaker Optoelectronic Node 1GHz with 65 86 MHz Split Installation Guide
Digital Reverse System Overview
2:1 bdr Transmitter Module
At the node (transmit) end of the system, the 5 to 42 MHz reverse path RF input
signals from each of the node’s ports are combined and routed to an Integrated 2:1
bdr Reverse Optical Transmitter Module in the housing lid. There, two RF inputs
produce two discrete 5 to 42 MHz RF signals. The transmitter module also converts
each signal to a baseband digital data stream and time division multiplexes the two
streams into a single data stream. The baseband data stream is converted to an
optical signal for transmission back to the headend or hub at 1310 nm for either
CWDM or DWDM channels. ITU grid wavelengths are used for DWDM
applications.
The following block diagram shows the transmitter module's internal components.
The following block diagram shows the transmitter module's internal components.
The following illustration shows the transmitter module.
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