3D Slew Rate Plot - The Ultimate Way to Compare PEMF Devices
Before writing this book, I had already done some testing on a couple PEMF devices, calculating and measuring slew rates at the surface and 1-5" above the mats or applicators. But while writing this book and going over the tests I did, I had the ambitious idea to take this further and I sat down and really thought about all the tests I thought would be valuable to compare PEMF devices, especially PEMF full body mats. Some of the tests, I thought were just thought experiments, but I wanted to be thorough in all the best tests and ways to meticulously compare PEMF devices by parameters that really mattered. Not marketing hype, not sales pitches, not made up words like PEMA or PEMI, but real testing based on real science and the highest level of PEMF research.
First I realized I needed to get ahold of the latest versions all the top selling PEMF full body mats. Many I already had, but several I had to purchase to make this possible. The complete list of mats I decided on was the Spectra APEX HSR, iMRS Prime, BEMER Evo, Centropix Kloud+, Sedona Pro, QRS 101, Pure Wave Ultra, Celler8, Steeve's Nextion, Higher Dose, Bon Charge, Ultralux, and the Vasindux Pro+. There are also plans to test two high intensity devices, the Parmeds Ultraflash and the Pulse XL (the two most popular high intensity units). The problem with the high intensity is the voltage is so high, it friend our hall probe, oscilloscope and even the laptop connected. So we are currently figuring out how to best test high intensity (which I would never recommend for daily use, but I am still curious of the test results).
The good news is we have the aforementioned popular low and medium intensity PEMF full body devices results from what I feel is the most rigorous and detailed testing ever done. I should say in advance the reason I am not publishing the full testing results using the product names is twofold. The first reason is legal reasons, as companies these days are all too happy to sue people for anything they don't like. The second is that I would rather create a dynamic webpage (bryantmeyers.com/testing) so I can update the page with new testing results, update changes as needed. However in this book you are seeing test results of seven popular brands I am labeling A-G. Refer to bryantmeyers.com/testing or call me for a consultation I can go over the testing of any of the above brands I mentioned.
My initial vision was to get all these popular mats, and do the following tests:
Hand Measurements
In the last chapter I shared a sampling of those initial results. For this phase of the testing we used a hall effect probe and carefully took the measurements over the centerline of the PEMF coils, and using a oscilloscope we were able to get accurate measurements for the slew rate, intensity, spectrum of frequencies, and ACTUAL signal shapes in the field (interestingly, most PEMF devices do not have signals like they advertise). We also looked at the spectrum of higher frequencies and compared to trifield meter tests. Fortunately, most low and medium intensity PEMF devices have very low RF frequencies, though the Chinese crystal mats have measurable electric field electrosmog. High intensity devices have high levels of electrosmog by comparison including RF.
Also I was able to dissect each mat and get accurate measurements of the PEMF coils, their inner and outer radius, coil layout, and the total coil area (examples were shown in the last chapter. These images are from a CAD program so that are precisely to scale and accurate. It was rather shocking how most PEMF full body mats have a total coil area much less than the average human body outline. And the small coil sizes also lead to penetration depths that are only 2-3 inches at best (with only a couple exceptions).
Before writing this book, I had already done some testing on a couple PEMF devices, calculating and measuring slew rates at the surface and 1-5" above the mats or applicators. But while writing this book and going over the tests I did, I had the ambitious idea to take this further and I sat down and really thought about all the tests I thought would be valuable to compare PEMF devices, especially PEMF full body mats. Some of the tests, I thought were just thought experiments, but I wanted to be thorough in all the best tests and ways to meticulously compare PEMF devices by parameters that really mattered. Not marketing hype, not sales pitches, not made up words like PEMA or PEMI, but real testing based on real science and the highest level of PEMF research.
First I realized I needed to get ahold of the latest versions all the top selling PEMF full body mats. Many I already had, but several I had to purchase to make this possible. The complete list of mats I decided on was the Spectra APEX HSR, iMRS Prime, BEMER Evo, Centropix Kloud+, Sedona Pro, QRS 101, Pure Wave Ultra, Celler8, Steeve's Nextion, Higher Dose, Bon Charge, Ultralux, and the Vasindux Pro+. There are also plans to test two high intensity devices, the Parmeds Ultraflash and the Pulse XL (the two most popular high intensity units). The problem with the high intensity is the voltage is so high, it friend our hall probe, oscilloscope and even the laptop connected. So we are currently figuring out how to best test high intensity (which I would never recommend for daily use, but I am still curious of the test results).
The good news is we have the aforementioned popular low and medium intensity PEMF full body devices results from what I feel is the most rigorous and detailed testing ever done. I should say in advance the reason I am not publishing the full testing results using the product names is twofold. The first reason is legal reasons, as companies these days are all too happy to sue people for anything they don't like. The second is that I would rather create a dynamic webpage (bryantmeyers.com/testing) so I can update the page with new testing results, update changes as needed. However in this book you are seeing test results of seven popular brands I am labeling A-G. Refer to bryantmeyers.com/testing or call me for a consultation I can go over the testing of any of the above brands I mentioned.
My initial vision was to get all these popular mats, and do the following tests:
Hand Measurements
- Slew Rate Measurements 0,1,2,3, 4 and 5 Inches (plus max and min)
- Intensity Measurements 0,1,2,3, 4 and 5 Inches (plus max and min)
- Images of the magnetic field signal shapes
- Spectrum Analysis Data Showing Spectral Content
- Mat Dissection to see coils and Graphs of Mat and Coils and Total Coil Area
- Penetration depths and Percent dropoffs showing how far the PEMF energy penetrates
- EMF tests with Trifield Meter and Spectrum analysis on an Oscilloscope
- Comparison Charts and Graphs to Compare Different PEMF devices with all this Data
In the last chapter I shared a sampling of those initial results. For this phase of the testing we used a hall effect probe and carefully took the measurements over the centerline of the PEMF coils, and using a oscilloscope we were able to get accurate measurements for the slew rate, intensity, spectrum of frequencies, and ACTUAL signal shapes in the field (interestingly, most PEMF devices do not have signals like they advertise). We also looked at the spectrum of higher frequencies and compared to trifield meter tests. Fortunately, most low and medium intensity PEMF devices have very low RF frequencies, though the Chinese crystal mats have measurable electric field electrosmog. High intensity devices have high levels of electrosmog by comparison including RF.
Also I was able to dissect each mat and get accurate measurements of the PEMF coils, their inner and outer radius, coil layout, and the total coil area (examples were shown in the last chapter. These images are from a CAD program so that are precisely to scale and accurate. It was rather shocking how most PEMF full body mats have a total coil area much less than the average human body outline. And the small coil sizes also lead to penetration depths that are only 2-3 inches at best (with only a couple exceptions).
3D Slew Rate Plot - The Ultimate Way to Compare PEMF Devices
But I am jumping a little ahead of the story. While writing this book I had the following idea: What if we could get hundreds of measurements across all these popular PEMF mats, not just along the centerline of the PEMF coils, but over the ENTIRE mat!
I thought, if slew rate measurements were conducted meticulously across and above a PEMF mat, you could create a rough 3D plot, which with the help of my illustator, I imaged would look like Figure 39. What this graph shows is the slew rate above a full body (or applicator) and how the therapeutic slew rate varies both ACROSS THE MAT and how it drops off ABOVE THE MAT. Essentially, you have the x-y plane, which encompasses the entire area of the full-body mat or applicator. There are two Z-axes: one represents the elevation or distance above the mat, and the other represents the slew rate at each point and each elevation above the mat; thus, it is akin to a 4-component vector (x, y, z, dB/dt). Therefore, each point in the voxelated grid above the full-body mat or applicator would have a slew rate assigned to it. With just one 3D plot, we obtain the area coverage of therapeutic slew rates and identify any hot or cold spots on the mat, based on the quality of coil design and placement. AND we get the slew rate penetration depth above every point on the mat! Listing only intensity and frequency for a PEMF is akin to kindergarten science compared to this 3D slew-rate plot, which is more like graduate school. Sadly, most PEMF companies oversimplify things to the point of being not only misleading but also wrong. And not wrong by a little, wrong by upwards of 8000%-10,000%!
If we compared PEMF devices by accurate 3D slew rate plots, we could expose all the scams in the PEMF industry and help people choose effective PEMF devices. For example, devices with low slew rates would be exposed. Also, devices with small coils and poor penetration depth would be exposed. Devices with excessive spacing between the coils (for full-body mats) would also be exposed. What would come to light is the best PEMF devices, backed by clinically proven and scientifically validated slew rates, and properly engineered coils that deliver this energy effectively.
At the very least, PEMF companies should list their slew rates in the middle of each coil, and a distance above this point, say, 4 inches. That would give a good starting point for comparing slew rates AND how deeply those slew rates penetrate. For a given slew rate, larger coils will have a higher slew rate four inches up than smaller coils. It is also important to know the total area of the coils to see how much of the body is covered.
[1] Note: While the numbers are actual measurements from a high-slew full-body mat, they are only for the centerline of each coil. My plan in the coming year is to help create several accurate 3D maps for at least a few popular PEMF devices. Stay tuned!
But I am jumping a little ahead of the story. While writing this book I had the following idea: What if we could get hundreds of measurements across all these popular PEMF mats, not just along the centerline of the PEMF coils, but over the ENTIRE mat!
I thought, if slew rate measurements were conducted meticulously across and above a PEMF mat, you could create a rough 3D plot, which with the help of my illustator, I imaged would look like Figure 39. What this graph shows is the slew rate above a full body (or applicator) and how the therapeutic slew rate varies both ACROSS THE MAT and how it drops off ABOVE THE MAT. Essentially, you have the x-y plane, which encompasses the entire area of the full-body mat or applicator. There are two Z-axes: one represents the elevation or distance above the mat, and the other represents the slew rate at each point and each elevation above the mat; thus, it is akin to a 4-component vector (x, y, z, dB/dt). Therefore, each point in the voxelated grid above the full-body mat or applicator would have a slew rate assigned to it. With just one 3D plot, we obtain the area coverage of therapeutic slew rates and identify any hot or cold spots on the mat, based on the quality of coil design and placement. AND we get the slew rate penetration depth above every point on the mat! Listing only intensity and frequency for a PEMF is akin to kindergarten science compared to this 3D slew-rate plot, which is more like graduate school. Sadly, most PEMF companies oversimplify things to the point of being not only misleading but also wrong. And not wrong by a little, wrong by upwards of 8000%-10,000%!
If we compared PEMF devices by accurate 3D slew rate plots, we could expose all the scams in the PEMF industry and help people choose effective PEMF devices. For example, devices with low slew rates would be exposed. Also, devices with small coils and poor penetration depth would be exposed. Devices with excessive spacing between the coils (for full-body mats) would also be exposed. What would come to light is the best PEMF devices, backed by clinically proven and scientifically validated slew rates, and properly engineered coils that deliver this energy effectively.
At the very least, PEMF companies should list their slew rates in the middle of each coil, and a distance above this point, say, 4 inches. That would give a good starting point for comparing slew rates AND how deeply those slew rates penetrate. For a given slew rate, larger coils will have a higher slew rate four inches up than smaller coils. It is also important to know the total area of the coils to see how much of the body is covered.
[1] Note: While the numbers are actual measurements from a high-slew full-body mat, they are only for the centerline of each coil. My plan in the coming year is to help create several accurate 3D maps for at least a few popular PEMF devices. Stay tuned!
3D Mapping “Magnetic X-Ray” Methodology for Intensity and Slew Rate Plots
To create the 3D maps, we used a highly controlled robotic arm, called a gantry, to move two specialized magnetic sensors across an area measuring 30 inches by 80 inches where the PEMF devices were placed. Measurements to Create 3D PEMF Plots Over 7500 measurements using an accurate Hall Effect Probe was done on 13 Popular full body mat PEMF.
The Scanning Process
The robotic arm moved precisely to measure the magnetic field strength across a 3D grid:
To create the 3D maps, we used a highly controlled robotic arm, called a gantry, to move two specialized magnetic sensors across an area measuring 30 inches by 80 inches where the PEMF devices were placed. Measurements to Create 3D PEMF Plots Over 7500 measurements using an accurate Hall Effect Probe was done on 13 Popular full body mat PEMF.
The Scanning Process
The robotic arm moved precisely to measure the magnetic field strength across a 3D grid:
- Grid: Measurements were taken in 1-inch steps across the width and length, and at three specific heights: 1 inch, 3 inches, and 5 inches above the mat.
- Coverage: 2 magnetic field sensors (AKM EQ730L) worked together to cover the full 80-inch length, with a slight overlap to ensure complete mapping.
- Action: The process was automated: the arm moved into position, stopped to take a measurement using an instrument (an oscilloscope), and then moved on to the next point.1
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Data Collection and Software
We programmed the instrument (the oscilloscope) to detect the specific magnetic pulse we were looking for while rejecting electrical noise caused by the robotic arm's motors. Although the automated measurements are slightly different than if they were taken manually (because of the electrical filtering requirement), the relative difference in strength between all the mats remained accurate.
Finally, dedicated plotting software took the raw data, smoothed out any remaining minor electrical interference, and then generated the visual map. The software can either show only the area measured (up to 5 inches) or create a projected view to estimate what the magnetic field would look like beyond that height. A separate manual measurement was required to determine how quickly the magnetic pulse rises or falls (called the 'slew rate' or dB/dT) for each mat, which was then used to generate a slew rate view.
The data was put into an MIT software program with AI to create an accurate visualization based on actual measurements. This is the first time any detailed test like this has ever been performed and gives a clear picture of the actual PEMF fields above a PEMF mat. Below are seven examples showing the magnetic field slew rates above .05 T/s. This threshold was selected so you could see the weak fields of these popular low intensity PEMF mats.
We programmed the instrument (the oscilloscope) to detect the specific magnetic pulse we were looking for while rejecting electrical noise caused by the robotic arm's motors. Although the automated measurements are slightly different than if they were taken manually (because of the electrical filtering requirement), the relative difference in strength between all the mats remained accurate.
Finally, dedicated plotting software took the raw data, smoothed out any remaining minor electrical interference, and then generated the visual map. The software can either show only the area measured (up to 5 inches) or create a projected view to estimate what the magnetic field would look like beyond that height. A separate manual measurement was required to determine how quickly the magnetic pulse rises or falls (called the 'slew rate' or dB/dT) for each mat, which was then used to generate a slew rate view.
The data was put into an MIT software program with AI to create an accurate visualization based on actual measurements. This is the first time any detailed test like this has ever been performed and gives a clear picture of the actual PEMF fields above a PEMF mat. Below are seven examples showing the magnetic field slew rates above .05 T/s. This threshold was selected so you could see the weak fields of these popular low intensity PEMF mats.
The Vision Realized - The First Ever 3D Magnetic X-Ray Plots
Measurements to Create 3D PEMF Plots Over 7500 measurements using an accurate Hall Effect Probe was done on 12 Popular full body mat PEMF devices. Below are the graphs of 7 of these. The data was put into an MIT software program with AI to create an accurate visualization based on actual measurements. This is the first time any detailed test like this has ever been performed and gives a clear picture of the actual PEMF fields above a PEMF mat. Below are seven examples showing the magnetic field SLEW RATES above .1 T/s. This threshold was selected so you could see the weak fields of these popular low intensity PEMF mats. Spectra is at the top of each plot. Bottom plot on each image is as follows: Top Row from left to Right [iMRS, BEMER, Centropxi]; Bottom Row left to right [QRS/Pure Wave, Sedona Pro, Higher Dose].
Measurements to Create 3D PEMF Plots Over 7500 measurements using an accurate Hall Effect Probe was done on 12 Popular full body mat PEMF devices. Below are the graphs of 7 of these. The data was put into an MIT software program with AI to create an accurate visualization based on actual measurements. This is the first time any detailed test like this has ever been performed and gives a clear picture of the actual PEMF fields above a PEMF mat. Below are seven examples showing the magnetic field SLEW RATES above .1 T/s. This threshold was selected so you could see the weak fields of these popular low intensity PEMF mats. Spectra is at the top of each plot. Bottom plot on each image is as follows: Top Row from left to Right [iMRS, BEMER, Centropxi]; Bottom Row left to right [QRS/Pure Wave, Sedona Pro, Higher Dose].
3-D Magnetic Field Intensity
Measurements to Create 3D PEMF Plots Over 7500 measurements using an accurate Hall Effect Probe was done on 12 Popular full body mat PEMF devices. Below are the graphs of 7 of these. The data was put into an MIT software program with AI to create an accurate visualization based on actual measurements. This is the first time any detailed test like this has ever been performed and gives a clear picture of the actual PEMF fields above a PEMF mat. Below are seven examples showing the magnetic field intensities above 40 microtesla (.4 Gauss). This threshold was selected so you could see the weak fields of these popular low intensity PEMF mats.
Measurements to Create 3D PEMF Plots Over 7500 measurements using an accurate Hall Effect Probe was done on 12 Popular full body mat PEMF devices. Below are the graphs of 7 of these. The data was put into an MIT software program with AI to create an accurate visualization based on actual measurements. This is the first time any detailed test like this has ever been performed and gives a clear picture of the actual PEMF fields above a PEMF mat. Below are seven examples showing the magnetic field intensities above 40 microtesla (.4 Gauss). This threshold was selected so you could see the weak fields of these popular low intensity PEMF mats.
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CAD Drawings to Perfect Scale of Coils of Leading PEMF Full Body Mat Devices (and Mat Dimensions - Note Many Full Body Mats are Very Short)
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Visualization Of Energy Domes over Coils (Penetration Depth ≈ Radius of Coil)
As Actual Magnetic X-ray Images Above Show, these are fairly Good Approximations)≈ 
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Comparison of Spectra APEX HSR Slew Rate vs Many of the Most Popular PEMF Full Body Mat Devices
Below left you can see the slew rate on the Spectra Apex HSR is more the 10 times greater than the next closest mat.
Below left you can see the slew rate on the Spectra Apex HSR is more the 10 times greater than the next closest mat.
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Comparison of Spectra APEX HSR Slew Rate vs Many of the Most Popular PEMF Full Body Mat Devices
Below left you can see the slew rate on the Spectra Apex HSR is more the 10 times greater than the next closest mat.
The Spectra slew rate is 15 times greater than Celler8 at the surface, but 5 inches up the Spectra has 246 times more Slew rate then the Celler8 (deeper penetration) and you can see from the magnetic X-ray plot above, the Spectra covers a much large area.
Below left you can see the slew rate on the Spectra Apex HSR is more the 10 times greater than the next closest mat.
The Spectra slew rate is 15 times greater than Celler8 at the surface, but 5 inches up the Spectra has 246 times more Slew rate then the Celler8 (deeper penetration) and you can see from the magnetic X-ray plot above, the Spectra covers a much large area.
Slew Rate Test of Spectra Vs 11 Top PEMF Mats
Slew rate is a measure of the steepness of the slope of a PEMF signal and visually below you can see the Spectra (Top) has a steeper slope than the competition. Both Pulses are taken in a -2.5 ms to + 2.5 ms window. The rise time of the Spectra can be seen to be .1 milliseconds = 100 microseconds. The average rise time of 11 top PEMF full body mats (2.77 ms) stretches all the way across half the window. The green line for the competition is very generous, in reality it is a much flatter slope. That is the Spectra slew rate 35 times greater than the competition so the slope would technically be 35 times steeper. But for the demonstration of how slew rates are measureed and compared, the Y-axis of the competition average is stretched out so you can see a slope.
The main point to understand is the steepness of the slope of Intensity vs Rise time is the slew rate and governs - along with the total coils area - how much energy is transferred from a PEMF device to your body via Faraday induction.
Slew rate is a measure of the steepness of the slope of a PEMF signal and visually below you can see the Spectra (Top) has a steeper slope than the competition. Both Pulses are taken in a -2.5 ms to + 2.5 ms window. The rise time of the Spectra can be seen to be .1 milliseconds = 100 microseconds. The average rise time of 11 top PEMF full body mats (2.77 ms) stretches all the way across half the window. The green line for the competition is very generous, in reality it is a much flatter slope. That is the Spectra slew rate 35 times greater than the competition so the slope would technically be 35 times steeper. But for the demonstration of how slew rates are measureed and compared, the Y-axis of the competition average is stretched out so you can see a slope.
The main point to understand is the steepness of the slope of Intensity vs Rise time is the slew rate and governs - along with the total coils area - how much energy is transferred from a PEMF device to your body via Faraday induction.
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Spectra Slew Rate Test
(Spectra Pulse In Image Above - TOP) Test Probe Used: AKM EQ730L
Above is the measurement at the surface in the center of the coil: 312.1 mV divided by 13mV per gauss equals 24.0 gauss intensity. For this measurement, the rise time is .100 milliseconds (2.40 mT/.100 ms = 24.0 T/s), yielding a slew rate of 24.0 T/s. Spectra has a surface slew rate on average 33 times greater than the competition! Using the same procedure at 5 inches up we find the slew rate of the Spectra is still 12.32 T/s This means the Spectra still has 51% of the Slew rate of the surface at 5 inches up! Spectra has a slew rate 5 inches up on average 246 times greater than the competition! |
Average Slew Rate 11 Top PEMF Full Body Mat Devices
(Average PEMF Pulse in Image Above - BOTTOM) Test Probe Used: AKM EQ730L
Above is the measurement on the surface at the point of maximum intensity (over the windings of the coil). The measured voltage were then converted to Gauss and divided by the average rise times. The average Intensity of 11 top full body mat devices was 15.7 Gauss (1.57 mT) and the average rise time was 2.77 milliseconds. Average Slew rate = Average Intensity / average rise time = .58 T/s So for these 11 measurement, the average slew rate of 11 top PEMF devices is .58 T/S. Using the same procedure at 5 inches up we find the slew rate of the 11 Top PEMF Full Body mats is ONLY .035 T/s. This means the average of the 11 top PEMF full body mats has only 7.5% of the Slew rate of the surface at 5 inches up! |
Based on a thorough investigation, we found 19 successful slew rate PEMF studies that can help guide us in what the best slew rates to use. The successful slew rates from these clinical studies average 26.7 T/s which can be a guiding light and a ballpark number for the ideal slew rate to use.
It is noteworthy to add that these 19 studies covered a wide range of tissue healing and regeneration from nerve to muscle to bone to joint/cartilage to tendons. The slew rate studies are summarized in the chart above left.
It is noteworthy to add that these 19 studies covered a wide range of tissue healing and regeneration from nerve to muscle to bone to joint/cartilage to tendons. The slew rate studies are summarized in the chart above left.
Spectral Content of Spectra vs Leading Brands
In addition to slew rate and intensity, another mechanism for energy transfer in PEMF systems involves magnetic resonance interactions, which depend on the spectral content of the emitted signal. (the range of frequencies contained within the pulse waveform).
Measurements of the spectral range of 11 top PEMF full mats mats show an average of approximately 20 - 4100 Hz, which is relatively limited compared to systems engineered with broader spectral bandwidth and higher energy pulse characteristics. In contrast, measurements of the Spectra Apex HSR reach up to 16,000 Hz.
In addition to slew rate and intensity, another mechanism for energy transfer in PEMF systems involves magnetic resonance interactions, which depend on the spectral content of the emitted signal. (the range of frequencies contained within the pulse waveform).
Measurements of the spectral range of 11 top PEMF full mats mats show an average of approximately 20 - 4100 Hz, which is relatively limited compared to systems engineered with broader spectral bandwidth and higher energy pulse characteristics. In contrast, measurements of the Spectra Apex HSR reach up to 16,000 Hz.
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Spectra HSR Frequency Spectrum - 20 - 16,000 Hz
[Window is 0-20,000 Hz] 
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Frequency Spectrum - 20 - 6000 Hz
[Window is 0-8,000 Hz] 
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In the case of Spectral content measurements, we are analyzing the magnetic field of PEMF mats to see what frequencies are contained in the magnetic field. It is important to know that the electrical signals that come out of the controller do not equal the magnetic fields coming out of the coil. These measurements are all taken with the same settings and the same sensor to show the relative difference between each mat. Using the same settings and sensor is important because a Fourier Transform can look very different based on the settings.
The measurements were taken with the following parameters:
The measurements were taken with the following parameters:
- Asahi Kasei Microdevices/AKM EQ-730L with 5v power supply
- A USB Ossilocope with configurable FFT settings in the software (waveforms software in particular used with these measurements)
- The start frequency is 20hz and the end frequency is 20khz
- The window setting is rectangular
Other Considerations
Along with all the performance specs we explored, there are other important considerations when shopping for a PEMF device such as price and value, warranty information, money back guarantee, country of origin and the type and quality of the full body mat and local applicators.
Along with all the performance specs we explored, there are other important considerations when shopping for a PEMF device such as price and value, warranty information, money back guarantee, country of origin and the type and quality of the full body mat and local applicators.
Conclusion
The Spectra HSR (High Slew Rate) PEMF systems are engineered to produce substantially higher rates of magnetic field change, allowing them to achieve clinically relevant slew rates within the ranges commonly reported in PEMF literature. By combining optimized magnetic intensity, rapid pulse rise times, and broader spectral content, Spectra Apex HSR systems maximize energy transfer into biological tissues through both Faraday induction (high dB/dt) and frequency-dependent resonance mechanisms.
This design approach enables more efficient stimulation of cellular pathways associated with inflammation modulation, tissue repair, and neuromuscular regulation, aligning system performance more closely with the parameters utilized in many published PEMF studies.
The Spectra HSR (High Slew Rate) PEMF systems are engineered to produce substantially higher rates of magnetic field change, allowing them to achieve clinically relevant slew rates within the ranges commonly reported in PEMF literature. By combining optimized magnetic intensity, rapid pulse rise times, and broader spectral content, Spectra Apex HSR systems maximize energy transfer into biological tissues through both Faraday induction (high dB/dt) and frequency-dependent resonance mechanisms.
This design approach enables more efficient stimulation of cellular pathways associated with inflammation modulation, tissue repair, and neuromuscular regulation, aligning system performance more closely with the parameters utilized in many published PEMF studies.
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3D Mapping “Magnetic X-Ray” Methodology
To create the 3D maps, we used a highly controlled robotic arm, called a gantry, to move two specialized magnetic sensors across an area measuring 30 inches by 80 inches where the PEMF devices were placed. The Scanning Process The robotic arm moved precisely to measure the magnetic field strength across a 3D grid:
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Data Collection and Software
We programmed the instrument (the oscilloscope) to detect the specific magnetic pulse we were looking for while rejecting electrical noise caused by the robotic arm's motors. Although the automated measurements are slightly different than if they were taken manually (because of the electrical filtering requirement), the relative difference in strength between all the mats remained accurate. Finally, dedicated plotting software took the raw data, smoothed out any remaining minor electrical interference, and then generated the visual map. The software can either show only the area measured (up to 5 inches) or create a projected view to estimate what the magnetic field would look like beyond that height. A separate manual measurement was required to determine how quickly the magnetic pulse rises or falls (called the 'slew rate' or dB/dT) for each mat, which was then used to generate a slew rate view. |