Automated near Field Spatial Mapping for Multilayer Ground Split Noise Detection
Automated near field spatial mapping identifies hidden split-plane return current loops and isolates board-level electromagnetic noise sources before EMI certification.
Spectrum Analyzer Mapping
Frequency Correlation
Combining frequency-domain data from an analyzer with positional information tracks how electromagnetic signals vary across a circuit. By performing spectrum analyzer mapping, technicians can see not just the intensity of the noise but also its specific frequency components at every location. Positional detail helps in identifying the source of the interference, such as a specific clock oscillator or a switching regulator.
Data Integration
The system moves a probe across the board and triggers a frequency sweep at each stop. During spectrum analyzer mapping, the software integrates the results into a multi-dimensional dataset that can be filtered by frequency. This allows the user to see how a specific harmonic propagates through the planes or along a trace.
The high sensitivity of the spectrum analyzer makes it possible to detect very low level signals that other methods might miss.
Operational Range
Operational frequency limits depend on the bandwidth of the probe and the analyzer being used. Most spectrum analyzer mapping systems cover the range from a few kilohertz up to several gigahertz. A span of this magnitude is sufficient for most commercial and industrial electronics applications.
A clear map helps in ensuring that the product will meet international standards for electromagnetic compatibility.