Cisco 1GHz Surge-Gap Taps, Standard & Full Profile Hoja De Datos
Data Sheet
© 2011-2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information.
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Cisco Flexible Solutions Taps,
Two-Way, Four-Way, & Eight-Way
The Cisco Flexible Solutions Tap (FST) offers the benefits of our existing Surge-Gap taps
plus the additional benefit of increased flexibility in system design via two types of
optional plug-ins.
The optional plug-in Reverse Attenuators used in the FST are available in 0, 3, 6, 9, and
12 dB values. The attenuators increase the reverse path tap loss with only a minimal
effect on forward tap loss. By selectively adding reverse attenuation to lower value taps,
reverse path tap losses can be made more similar across the various values of taps used
in an HFC network. This allows the range of RF levels transmitted from closed loop
customer premise equipment (CPEs) to be narrowed
– thus improving the reliability of
upstream transmissions.
The optional plug-in Forward EQs used in the FST are available in 6, 9, and 12 dB
values. The Forward EQs increase the forward path tap loss in a standard cable-tilted
fashion, with greater loss at lower frequencies than higher frequencies. The plug-in
Forward EQ allows optimization of tap output levels at tap locations near the end of the
feeder line.
values. The Forward EQs increase the forward path tap loss in a standard cable-tilted
fashion, with greater loss at lower frequencies than higher frequencies. The plug-in
Forward EQ allows optimization of tap output levels at tap locations near the end of the
feeder line.
The optional plug-in Forward Inverse EQs used in the FST are available in 3, 6, 9, and 12 dB
values. The Inverse EQs increase the forward path tap loss in a down-tilted fashion, with greater
loss at higher frequencies than lower frequencies, and with only a minimal effect on reverse tap
loss. The plug-in Forward Inverse EQ allows optimization of tap output levels at tap locations with
high-level forward RF signals and significant up-tilt (typically tap locations closest to nodes and
amplifiers).
The Flexible Solutions Taps all have IEEE compliant 6 kV surge protection, providing significantly
improved protection against voltage transients in lightning strike areas and locations with unreliable
power networks. In addition, the new tap products offer the same make-before-break capabilities of
previous Cisco tap products, enabling the tap faceplate to be removed without interrupting service
to downstream customers. The taps pass up to 12 amps of current, enabling operators to access
power at locations within the HFC plant where additional power is needed.
Figure 1. Cisco Flexible Solutions Taps