Cisco Flexible Solutions Taps 安装指南
Chapter 1 Introducing the FST with Power Distribution Port
6
Optional Modules
The tap accepts three types of optional plug-in modules:
Reverse Attenuator (RA) plug-in modules are available in 0, 3, 6, 9, and 12 dB
values. These plug-in modules are used to increase the reverse path tap loss
without significantly affecting forward tap loss. By selectively adding reverse
attenuation to taps of middle to lower value, reverse path tap losses can be made
more similar across the various values of taps used in an HFC network.
values. These plug-in modules are used to increase the reverse path tap loss
without significantly affecting forward tap loss. By selectively adding reverse
attenuation to taps of middle to lower value, reverse path tap losses can be made
more similar across the various values of taps used in an HFC network.
Inverse Equalizer (IEQ) modules are available in 3, 6, 9, 12, and 15 dB values.
These plug-in modules are used to increase the forward path tap loss in a
down-tilted fashion, with greater loss at higher frequencies than lower
frequencies, without significantly affecting reverse tap loss. IEQ plug-in modules
allow optimization of tap output levels at tap locations closest to nodes and
amplifiers with high-level forward RF signals and significant up-tilt.
These plug-in modules are used to increase the forward path tap loss in a
down-tilted fashion, with greater loss at higher frequencies than lower
frequencies, without significantly affecting reverse tap loss. IEQ plug-in modules
allow optimization of tap output levels at tap locations closest to nodes and
amplifiers with high-level forward RF signals and significant up-tilt.
Forward Equalizer (EQ) modules are available in 3, 6, 9, 12, and 15 dB values.
These plug-in modules are used to increase the forward path tap loss in a
standard cable-tilted fashion, with greater loss at lower frequencies than higher
frequencies. The EQ plug-in modules allow optimization of tap output levels at
tap locations near the end of the feeder line.
These plug-in modules are used to increase the forward path tap loss in a
standard cable-tilted fashion, with greater loss at lower frequencies than higher
frequencies. The EQ plug-in modules allow optimization of tap output levels at
tap locations near the end of the feeder line.
Note: For help in selecting plug-in modules, see Flexible Solutions Taps Data Sheet
for tables showing tap loss increase by frequency for each module.
for tables showing tap loss increase by frequency for each module.
Reverse Attenuator
The Reverse Attenuator is a plug-in that can be installed in the field. For details, see
Installing the Optional Modules (on page 24).
Four types of split are available:
Installing the Optional Modules (on page 24).
Four types of split are available:
42/54 MHz
65/86 MHz
85/102 MHz
204/258 MHz
RA modules are labeled as shown in the following table.
Value 42/54 MHz Split 65/86 MHz Split 85/102 MHz Split 204/258 MHz Split
Color
3 dB
Red