Cisco Cisco 1 GHz GainStar Amplifier Installationsanleitung
Balancing and Setup
33
If the DC8 Directional Coupler is installed, add 20 dB (single output) or 18.0 dB
(Main port output) /12.2 dB (Aux port output) to the measured levels to get the
true output levels.
If the DC12 Directional Coupler is installed, add 20 dB (single output) or 18.5 dB
(Main port output) /8 dB (Aux port output) to the measured levels to get the true
output levels.
(Main port output) /12.2 dB (Aux port output) to the measured levels to get the
true output levels.
If the DC12 Directional Coupler is installed, add 20 dB (single output) or 18.5 dB
(Main port output) /8 dB (Aux port output) to the measured levels to get the true
output levels.
3 Are the output levels within +/-0.5 dB of the design level?
If yes, proceed to step 5.
If the output level is more than the design output level, replace the forward
input pad with a higher value pad.
input pad with a higher value pad.
If the output level is less than the design output level, replace the forward
input pad with a lower value pad, and proceed to step 5.
input pad with a lower value pad, and proceed to step 5.
4 Repeat steps 2 and 3 until the output level is correct.
5 Proceed to To Set Up the Reverse Input Level.
5 Proceed to To Set Up the Reverse Input Level.
CAUTION:
The pad should be configured carefully to control the forward
output level, otherwise, the output module damage may occur,
which will result in the GainStar Line Extender distortion.
output level, otherwise, the output module damage may occur,
which will result in the GainStar Line Extender distortion.