Cisco Cisco 1 GHz GainMaker Amplifier インストールガイド
Chapter 3 Balancing and Setup
Note: Make sure the reverse fiber link has been properly balanced before proceeding.
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Ensure that the design value reverse output equalizer and reverse pads are installed
in the appropriate reverse slots in the amplifier. Refer to the following diagram.
Note: Record the pad values for each input port for later use.
Note: Record the pad values for each input port for later use.
3
Proceed to To Calculate the Proper RF Signal Level (on page 76).
To Calculate the Proper RF Signal Level
In order to calculate the correct RF signal level to inject, you must know the following.
Design Reverse Port Input Level from the design print
Total Injection Insertion Loss (20 dB)
To calculate the correct signal level to inject, add the total injection insertion loss to the
design port input level.
Example
Design amplifier reverse port input level = 19 dBmV
Total injection insertion loss = 20 dB
The design amplifier reverse port input level plus injection insertion loss equals correct
RF signal level to inject.
In the example shown above, 19 dBmV + 20 dB = 39 dBmV. Therefore, you would set the
In the example shown above, 19 dBmV + 20 dB = 39 dBmV. Therefore, you would set the
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