Tired of Failing Anechoic Chamber Tests? Diagnose EMC Design Issues in Seconds
Diagnose EMC design issues with EMxpert in real-time on your bench-top
My product failed the compliance test in an anechoic chamber. Why didn’t I see this coming?
My product should have passed the compliance test. It wasn’t supposed to have RF leakages and be susceptible to noise. Filters used should have minimized susceptibility to radiated spurious signals. EMI gasketing material used was supposed to be an excellent shield…
Why does my product fail?
Actual EMC test is almost left until the last step i.e. system level. If there is a problem, fixing it requires more time, budget and effort. If you can start testing earlier in the design cycle, you can lower the cost, speed time-to-market and increase your productivity. A few EMC design rules can be summarized as:
- Identify the transmitted and received noise sources.
- Control the path to ground for all signals.
- Keep the amount of RF energy allowed into the system as low as possible.
- Check the PCB layout for current loops and minimize the loops by adding return paths to ground as close as to the loop.
- Use ground plane that is inherent to the PCB structure i.e. analog ground plane for analog parts of the system and digital ground plane for digital parts of the system.
How can I diagnose EMC design issues earlier in the design cycle?
Conventional test methods are slow and costly. EMxpert can help you diagnose EMC design issues on a board level early in the design cycle.
EMxpert is already helping most leading consumer electronics manufacturers, military contractors and smart phone manufacturers to diagnose and debug EMC/EMI design problems at a board level before they take their systems for a final test in an anechoic chamber.
EMxpert is the only low-cost, high-speed bench-top solution for providing real-time analysis and optimization of your PCB designs.
With EMxpert, in seconds and a fraction of an anechoic chamber cost you can easily:
- Analyze your high speed, high power and/or high density/complexity PCB designs.
- Visualize the root causes of potential EMC and EMI problems.
- Find, characterize, and address unintended radiators or RF leakage.
- Pinpoint in less than a second the cause of a design failure even an intermittent problem.
- Prototype & test new designs, components and forms.
- Test & optimize multiple PCB (printed circuit board) design iterations on your lab-bench.
- Pre-test & resolve EMC and EMI problems early on to avoid unexpected EMC compliance test results
…all for a fraction of the cost of an anechoic chamber.
World’s fastest bench-top system to diagnose and debug EMC/EMI design problems: EMxpert
EMxpert provides spatial and spectral scans that allow design teams to address EMC design problems at their lab-bench in real-time.
Spectral scan measures and displays the maximum amplitude vs. frequency of the magnetic field strength over the scanned area. To characterize emissions, EMxpert quickly scans the board across a broad frequency range (150 kHz – 8 GHz). You can then select and characterize specific frequencies to observe how the noise evolves spatially across the frequency range. This allows the design team to map the noise, confirm its source, and implement appropriate mitigation. A spectral scan result is shown below. You can mouse over the spectral graph and analyze the problem frequency and amplitude.
Spatial scan measures the magnetic field of radiated electromagnetic emissions from the DUT at a single frequency as a function of position. EMxpert maps near-field emissions generated by current flow on the surface of the board. Measurements occur in real-time and this allows the design team to compare different design versions in seconds using the Spatial Comparison capabilities of the instrument. A spatial scan result is shown below. You can import the Gerber file of the PCB or simply the picture of the PCB. You can exactly find the location of the hot spot or current loop or intermittent event when you mouse over the graph.
EMxpert allows the design teams to diagnose and quickly address any unexpected emission problems with the EMC design. It will cut one to two design cycles out of your product development process. It also reduces their EMI testing time by up to two orders of magnitude.