Del Mar Electronics & Manufacturing Show 2017 San Diego, CA - May 3-4, 2017. Booth #527 between 10:00 am - 5 pm
 

Identify defective PCBs

Reduce debugging time and improve manufacturing yield with Golden Sample comparison test.

Tests were done at a manufacturing facility in Europe to determine if problems could be identified when comparing the very-near-field emissions of good boards and problem boards. There was an issue that had been eluding detection; it showed as a poor RSSI reading and had been isolated to the IF chain. An EMxpert spatial scan comparison of the IF currents between a good board and the problem board indicated an issue at a location different from where the manufacturer had assumed the problem was. Further investigation uncovered a soldering issue with a single component.

A scan of the entire board at the IF frequency clearly showed a difference in the spatial profile.

mpt1

Spatial Scan of the Good Board at the IF frequency

 

mpt2

Spatial Scan of the Bad Board at the IF frequency

Once it was confirmed that there was a problem at the IF frequency a focused analysis on the IF chain was done. Zooming in on the area of the IF right as it exited the first mixer showed a very-near-field variation immediately after the SAW filters.

mpt3

Spatial Scan of the IF Chain of the Good Board Showing Strong Emissions Throughout

 

mpt4

Spatial Scan of the Bad Board at the IF Frequency

After viewing the large variation in the very-near-field emissions at this location, a visual inspection of the board revealed the SAW filter highlighted in the image above was populated with a 90° rotation meaning no signal would pass through.

Why EMxpert Is Right For You

You can execute real-time analysis of your design, test multiple design iterations and optimize complex designs on your lab-bench in seconds at each stage of the design process.

You want to avoid the delays and set-up needed for far-field measurements in a chamber.

EMxpert not only require low CAPEX and zero OPEX, they also deliver significant ROI advantages.

Key Benefits

Test results in seconds
Easy to use
Compact and tabletop
Significant time-to-market acceleration
Dramatic increase in production
Substantial cost reduction

Read More

Are you under time-to-market pressure because of the countless number of lengthy measurements in inaccessible anechoic chambers?

Tired of losing valuable project time waiting in line to test your designs in expensive anechoic chambers?

Do you want to test your design and performance quickly to accelerate project completion and delivery?

Are you under budget pressures?

Why did your product fail the compliance test in an anechoic chamber? Why didn’t you see this coming?

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 the cause of a design failure even when the problem is intermittent.
  • Prototype, test, and optimize new designs, forms and components.
  • Test & optimize multiple PCB (printed circuit board) design iterations on your lab-bench.
  • Resolve EMC and EMI problems early in the design cycle
  • Display NFC antenna emissions

…all for a fraction of the cost of an anechoic chamber.

Calculate Your Savings

ROI Calculator
  •   How does the EHX work?

    how-does-it-workThe EMxpert EHX consists of a patented scanner, a compact adapter, a customer-supplied spectrum analyzer and a PC running EMxpert software (EMxpert setup diagram). The EMxpert EHX measures the magnetic field (H-Field) in two orthogonal directions using H-field probes.

    The patented scanner is a passive device that couples the very-near-field emissions from the device under test. The measurements of these coupled fields are done with the spectrum analyzer and the adaptor synchronizes the spectrum analyzer and the patented scanner.

    The EMxpert software knows the insertion loss of each individual probe across the frequency range so it can apply compensation for the internal losses of the scanner.

    The software will also apply the antenna factor compensation that will result in accurate H-field data being displayed. Interpolation between probes is done by the software so that features smaller than the probe spacing can be resolved.

    The patented scanner consists of 1,218 H-field (magnetic) probes that operate between 150 kHz and 8 GHz. Probes are wide band but not very sensitive across this band thus they are very good at rejecting background noise.

    Each row and column on the patented scanner corresponds to a unique probe that is spaced every 7.5 mm into an electronically switched array, which provides an effective 3.75 mm resolution. Electronic switches enable the probes to sweep the entire board under one second.

  •   How does the EHX+ work?

    how-does-it-workThe EMxpert EHX+ consists of a patented scanner, a built-in adapter, a built-in spectrum analyzer and a customer-supplied PC running EMxpert software (EMxpert setup diagram). The EMxpert EHX+ measures the magnetic field (H-Field) in two orthogonal directions using H-field probes.

    The patented scanner is a passive device that couples the very-near-field emissions from the device under test. The measurements of these coupled fields are done with the spectrum analyzer and the adaptor synchronizes the spectrum analyzer and the patented scanner.

    The EMxpert software knows the insertion loss of each individual probe across the frequency range so it can apply compensation for the internal losses of the scanner.

    The software will also apply the antenna factor compensation that will result in accurate H-field data being displayed. Interpolation between probes is done by the software so that features smaller than the probe spacing can be resolved.

    The patented scanner consists of 1,218 H-field (magnetic) probes that operate between 150 kHz and 8 GHz. Probes are wide band but not very sensitive across this band thus they are very good at rejecting background noise.

    Each row and column on the patented scanner corresponds to a unique probe that is spaced every 7.5 mm into an electronically switched array, which provides an effective 3.75 mm resolution. Electronic switches enable the probes to sweep the entire board under one second.

  •   How does the ERX+ work?

    The EMxpert ERX+ consists of a patented scanner, a built-in adapter, a built-in spectrum analyzer and a customer-supplied PC running EMxpert software (EMxpert setup diagram). The EMxpert ERX+ measures the magnetic field (H-Field) in two orthogonal directions using H-field probes.

    The patented scanner is a passive device that couples the very-near-field emissions from the device under test. The measurements of these coupled fields are done with the spectrum analyzer and the adaptor synchronizes the spectrum analyzer and the patented scanner.

    The EMxpert software knows the insertion loss of each individual probe across the frequency range so it can apply compensation for the internal losses of the scanner.

    The software will also apply the antenna factor compensation that will result in accurate H-field data being displayed. Interpolation between probes is done by the software so that features smaller than the probe spacing can be resolved.

    The patented scanner consists of 1,218 H-field (magnetic) probes that operate between 150 kHz and 8 GHz. Probes are wide band but not very sensitive across this band thus they are very good at rejecting background noise.

    Each row and column on the patented scanner corresponds to a unique probe that is spaced every 7.5 mm into an electronically switched array, which provides an effective 3.75 mm resolution. Electronic switches enable the probes to sweep the entire board under one second when Level 1 is selected.

    The scanner is placed right under the Gorilla Glass. X/Y step motors move the scanner (1218 probes) for higher resolution scans under the Gorilla Glass. After placing the DUT on the Gorilla Glass, user can select from seven different levels of resolution (0.12 mm – 7.5 mm).

    The image on right is a representation of a 2 x 2 scan area on the scanner. At level 1, spatial scan is executed in real-time i.e. scanner doesn’t move. The data is collected by each probe that is placed in the center of each grid.

    At level 2, each grid is divided into four subgrids. Scanner first moves the orange dots and collects data from four subgrids. Scanner then moves to black dots and collects data from four subgrids. Scanner then moves to green dots and collects data from four subgrids and finally, scanner moves to purple dots and completes the scan.

    At each level, one grid is divided into four subgrids which means four measurement points. Level 7 is the highest resolution (120 microns) and the maximum number of measurement points in one grid can be 4,096.

Companies Who Trust EMxpert Products
What Our Customers Are Saying
“I was very impressed with the capability of the EMxpert solution. We had spent several weeks investigating EMC issues related to our end customers product. We had information relating to the spectral component and amplitudes that were causing an issue, but needed to identify the location of the emission site. The EMxpert tool allowed us to perform spatial analysis and locate the site in a single day. The tool is effective and can save weeks of time and effort!”
Iain Lochhead
Semtech Director of Applications Support
“Where have you guys been for the last 5 years while we have struggled?” was the concluding comment from Robert… “We need one of these” was Robert’s conclusion.”
Robert Dmitroca
Senior Design Engineer - EMI
“I was very impressed with the capability of the EMxpert. The EMxpert tool allowed us to perform spatial analysis and locate the site in a single day. The tool is effective and can save weeks of time and effort!”
Director of Applications Support
Leading Semiconductor Manufacturer

To reset your password, enter the email address you use to sign in to the EMSCAN Partner Lounge.

Get Demo