Keysight N4391A/N4392A Optical Modulation Analyzer, Getting Started
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Technical Specifications
5
EVM %rms is dependent upon average optical input power.
This graph above shows the %rms Error Vector Magnitude (EVM)
normalized to the highest error vector within an analysis record of 500
symbols as a function of signal input power. The EVM %rms level at higher
power levels results from the instrument noise level. The increase at lower
signal power levels is a result of decreasing signal to noise ratio. The fitted
model reveals the EVM %rms noise floor in the offset term.
Содержание N4391A
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