How to Diagnose Board-Level Design Issues Using Very-Near-Field Measurements
The EMxpert provides board-level design teams with world-leading fast magnetic very-near-field data to help diagnose EMC design issues. It captures and displays visual images of spectral and real-time spatial scan results in seconds. PCB designers can now scan any board to identify both constant and time-based emission sources in the range of 150 kHz to 8 GHz.
The EMxpert provides unique pre- and post-EMC compliance testing that images emissions in less than a second. This allows the design team to immediately analyze and compare design iterations. It can be used to resolve EMC design issues like: filtering, shielding, common mode, current distributions, immunity, and broadband noise. The EMxpert also provides a unique view into non-EMC related issues at the PCB level such as GPS self-interference or NFC performance.
During any new PCB development process, design engineers must find, characterize, and address unintended radiators or RF leakage to pass compliance testing. Ideal PCB projects for the EMxpert are boards designed for high speed, high power, and/or high density/complexity. Any PCB that places a premium on the board real-estate also qualifies as an excellent candidate. The EMxpert allows engineers to visualize the root causes of potential EMC and EMI problems. It delivers repeatable and reliable results that pinpoint the cause of a design failure.
As a result, the user can personally test the design without having to rely on another department, test engineer, or time-consuming off site testing. After diagnosing even an intermittent problem, the engineer can implement a design change and retest. The results provide concrete verification of the effectiveness (or not) of the design change.
The EMxpert allows board designers to pre-test and resolve EMC and EMI problems, thus avoiding unexpected EMC compliance test results. The EMxpert’s diagnostic capabilities allow design teams to reduce emission testing times dramatically. EMxpert users have also documented 50 percent reductions in design cycle times. The compact EMxpert, provides PCB design teams with an easy-to-use, cost-effective, and proven tabletop solution.
Visualize how injected RF signals flow through a PCB
You can improve product reliability by identifying the source(s) and path(s) of any high currents generated during a conducted immunity test. With the EMxpert, you can easily insure that the current on the board is not impacting susceptible components on the board, causing system failure. If they are, quantify and compare the effects of different mitigation tactics.
EMxpert displays the resulting very-near-field disturbance caused by injected RF signals flowing through a PCB or by signals radiated onto a PCB. The resulting scan identifies sensitive components on the board impacted by these high amplitude currents. The design engineers can then implement one or more mitigation measures and conduct “before” and “after” scans. These scans quantify the effectiveness of each mitigation tactic, facilitating easy comparison. Using the scans from EMxpert, you can improve the immunity of susceptible components in early design stages. This significantly reduces costly board respins, which could otherwise result in significant delays in the design cycle.
To test your own designs on the EMxpert, please contact us.
EMSCAN is the world leading developer of FAST magnetic very-near-field measurement technologies and applications since 1989, providing real-time test solutions to antenna and PCB designers and verification engineers, without the need for a chamber.
The EMxpert, a family of compact EMC and EMI diagnostic tools, and the RFxpert, a family of antenna measurement tools, enable engineers to quickly optimize their designs. EMSCAN solutions dramatically increase designer productivity and substantially reduce time-to-market and project development costs. www.emscan.com