Cisco Multimedia Stretch Tap Directional Coupler Equalizer Data Sheet
Data Sheet
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Multimedia Stretch Tap Directional Coupler/Equalizer
The
Multimedia Stretch™ Tap Directional Coupler/Equalizer (DC/EQ) enables a more
flexible deployment of reverse services in a hybrid fiber/coax transmission system.
The DC/EQ is a by-product on the extensive reverse path. The 5
–1000 MHz broadband equalizers
add attenuation to the reverse path of the tap port allowing for a more flexible deployment of
reverse services. The cost-effective DC/EQ eliminates the need for high-pass filters by adding a
selectable 5
–1000 MHz broadband equalizer to all tap ports while providing the appropriate
directional coupler (dB value of the tap).
Benefits
The DC/EQ has several key benefits.
●
Eliminate the need for high-pass filters.
●
Enable systems to better support signal transmission in this challenging portion of the
spectrum by strategically attenuating reverse path signals.
●
Improve overall signal-to-noise performance by raising output levels to the upper ends of
their dynamic range on telephony network interface units and customer premise devices.
●
Simplify deployment of new services by lowering the dynamic range variance.
●
Minimize concerns regarding overdriving optical return transmitter lasers.
Scope of Application
The DC/EQ plugs into any of Cisco Stretch Tap products including 2-Way, 4-Way and 8-Way. It is
available in six different equalizer values from 3 to 18 dB.
Figure 1. Multimedia Stretch Tap Directional Coupler/Equalizer