Cisco GainMaker Optoelectronic Node 1GHz with 55 70 MHz Split 安装指南
Chapter 3 Balancing and Setup
2 Measure the signal level at the following frequencies:
The lowest frequency specified in the system design
The highest frequency specified in the system design
3 Compare the measured levels to the design input levels on the system design
print.
Note: Add 20 dB to the measured levels to find the true levels. The test point
Note: Add 20 dB to the measured levels to find the true levels. The test point
attenuates input signals by 20 dB.
4 Are measured levels within the desired limits?
a If yes, proceed to step 5.
b If no, or if no signals are present, find the problem before proceeding. You
b If no, or if no signals are present, find the problem before proceeding. You
cannot balance the amplifier without the proper input signals.
5 Remove the test point adapter from the forward input test point, leaving other
equipment connectors intact.
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