Cisco Cisco 1 GHz GainMaker Amplifier 安装指南
2-20
Installing Trim Networks
741338 Rev D
Installing a Trim Network in a LEIII
Procedure
Follow the procedure to install a trim network in an LEIII module.
1.
Open the LEIII housing.
2.
Open the LEIII module cover.
3.
If equipped with AGC, switch the AGC to THERMAL.
4.
Record the RF output levels.
Note: The trim network location is labeled SYS TRIM on the printed circuit
Note: The trim network location is labeled SYS TRIM on the printed circuit
board.
5.
Using a wire cutter or snips, carefully cut the bus wire jumper as close to the
circuit board as possible.
6.
Remove the jumper wire from the module using needle-nose pliers.
Do not let the loose cutting fall into the amplifier.
Do not let the loose cutting fall into the amplifier.
7.
Ensure the pins are straight and clean on the trim network.