9-26 MTR3000 Radio Frequency Distribution System (RFDS) Equipment: Field Tuning Procedures
iii. Continue this process of adjusting each of the screws one at a time by very small
rotations until the optimized return loss performance is provided as shown in Figure 9-20
where all of the return loss curve is well below the red limit line.
Figure 9-20 Result after fine tuning
3. Final Inspection
a. Inspect the final performance curves and parameter plot against the standard mask
template needed to meet specifications. Refer to Figure 9-21.
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