Cisco Cisco 870 MHz GainMaker Amplifiers 技术参考
78-736252-01 Rev D
3
Replacing the AGC
GainMaker System Amplifiers
This procedure applies to replacing the AGC in GainMaker System Amplifiers.
1.
Open the system amplifier housing.
CAUTION:
RF connectors and housing seizure assemblies can be damaged if shunts
are not removed from the amplifier before installing or removing the
amplifier module from the housing.
2.
To avoid an outage, place the AGC switch (S1) in MANUAL mode.
3.
Remove the amplifier cover by loosening the 14 cover screws.
4.
Remove the AGC and replace with the new AGC plug-in.
5.
Replace the amplifier cover and tighten the cover screws from 10 in-lb to 12
in-lb (1.1 Nm to 1.4 Nm).
6.
Follow instructions in the GainMaker Broadband Amplifier System Amplifier
Modules and Housing Installation and Operation Guide, part number 593161, for
Forward Path Balancing for AGC stations for your system design. Use the
section for aligning the AGC module under Forward Path Balancing for
AGC Stations using Thermal Setup Mode.
7.
Close the housing and tighten bolts per instructions in the GainMaker
Broadband Amplifier System Amplifier Modules and Housing Installation and
Operation Guide, part number 593161.