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 3. GQ EMF EF Meter RF Spectrum Power Analyzer
 GQ EMF-390 Calibration		  New Topic  Reply to Topic
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The Invisible Rainbow

15 Posts
Posted - 03/21/2022 :  06:07:10  Show Profile  Reply with Quote
Is the GQ EMF-390 meter factory calibrated to zero EMF using a Faraday cage?

If not, is it possible to accurately calibrate the GQ EMF-390 meter to zero EMF by following the user guide instructions for the Initial Setup > Zero EMF Calibration and then quickly put it in a mobile phone Faraday wallet during the 10 second lowest EMF calibration scan?

GQ EMF-390 User Guide: Initial Setup > Zero EMF Calibration (pg. 15-16)
https://www.gqelectronicsllc.com/GQ-EMF-360V2-380V2-390_UserGuide.pdf
Reply #1

EmfDev

2250 Posts
Posted - 03/21/2022 :  10:40:11  Show Profile  Reply with Quote
Hi Invisible Rainbow, the zero EMF calibration has now been removed and changed to EMF Factor.
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Reply #2

The Invisible Rainbow

15 Posts
Posted - 03/23/2022 :  06:02:07  Show Profile  Reply with Quote
1) What is meant by 'EMF Factor' exactly?

2) Does that mean the GQ EMF-390 cannot be user zero EMF calibrated anymore?

3) How do I know/test if the unit is properly calibrated to zero EMF?
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Reply #3

EmfDev

2250 Posts
Posted - 03/23/2022 :  10:05:20  Show Profile  Reply with Quote
1. Adjusting the EMF reading by a factor.
2. Yes.
3. Try using a faraday cage or where there is no emf and the reading should be 0 or close to 0 if there is low emf.
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Reply #4

The Invisible Rainbow

15 Posts
Posted - 03/23/2022 :  19:10:10  Show Profile  Reply with Quote
quote:
Originally posted by EmfDev

1. Adjusting the EMF reading by a factor.
2. Yes.
3. Try using a faraday cage or where there is no emf and the reading should be 0 or close to 0 if there is low emf.



I looked through the 'Init Setup' menu and it has setup options for 'EMF Factor', 'EF Factor' and 'RF Density Gain'. However these aren't mentioned in the user manual.
https://www.gqelectronicsllc.com/GQ-EMF-360V2-380V2-390_UserGuide.pdf

Is there information somewhere you can point me to about how to set these up properly?
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Reply #5

EmfDev

2250 Posts
Posted - 03/24/2022 :  09:33:25  Show Profile  Reply with Quote
I will let support know to update the user guide. The default for emf and ef factors should be 100%. It is multiplied to the readings to adjust. The density gain is 10. It has the same purpose.
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Reply #6

Zak

Canada
2 Posts
Posted - 01/04/2023 :  15:37:39  Show Profile  Reply with Quote
Just got my EMF-390 v2 today and all my EMF readings seem to be 10 milligauss off. How do I use the EMF Factor feature on my device to correct for this discrepancy?
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Reply #7

EmfDev

2250 Posts
Posted - 01/04/2023 :  17:48:49  Show Profile  Reply with Quote
Hi Zak, what is the firmware version on your device? The new firmware version has emf offset.
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Reply #8

Zak

Canada
2 Posts
Posted - 01/04/2023 :  20:31:27  Show Profile  Reply with Quote
I checked the unit and the revision is 3.70. Is it up-to-date? If not, where can I get the latest firmware?
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Reply #9

EmfDev

2250 Posts
Posted - 01/06/2023 :  13:45:25  Show Profile  Reply with Quote
please email your serial number to me or to support@gqelectronicsllc.com and ask for the latest firmware update to your device.
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