Cisco Cisco 862 MHz GainStar Amplifier Guida All'Installazione
Installing the Accessories
the total internal tilt for the station. The forward output equalizer value is
different from the 1 GHz, or 862 MHz platform, in order to achieve optimum
performance.
3 Install the reverse equalizer specified by the design print in the reverse equalizer
slot. The default factory reverse tilt is set at 0 dB. For the exact location of the
reverse equalizer, refer to the accompanying illustration. For a list of available
reverse equalizers, see Technical Information.
4 Install other options or accessories as desired.
To Set up RF Output Port
Follow these steps to test the GainStar Line Extender.
1 Factory default is one Main output port.
2 Before powering up the GainStar Line Extender, make sure all the accessories are
1 Factory default is one Main output port.
2 Before powering up the GainStar Line Extender, make sure all the accessories are
installed and properly seated.
3 Make sure the unit is properly connected to the power supply. Refer to
System
Power.
4 For one High-level output, RF output Main is the active port. For two outputs,
both the RF output Main and RF output Aux are the active ports. Make sure a
Signal Director (SD) or Directional Coupler is installed in the position marked
“Signal Director” on the GainStar Line Extender.
The specifications of the Signal Director and the Directional Coupler are listed in the
table below.
Item
Item
Illustration
Description
Signal Director
Controls one or two RF outputs. The Aux
port output level has the same value as the
Main port output level.
DC8 Directional
Coupler
Controls one or two RF outputs. In the
forward path, the typical attenuations are
7.8 dB (Aux port output level) and 2.0 dB
(Main port output level); in the reverse
path, the typical attenuations are 8.4 dB
(Aux port output level) and 1.8 dB (Main
port output level).
DC12
Directional
Coupler
Controls one or two RF outputs. In the
forward path, the typical attenuations are
12.0 dB (Aux port output level) and 1.5 dB
(Main port output level); in the reverse
path, the typical attenuations are 12.8 dB
(Aux port output level) and 1.0 dB (Main
port output level).
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