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Summary of Contents for EMFields AM-10
- Page 1 Acoustimeter User Manual...
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Page 2: Safety Instructions
Safety Instructions Please read through these instructions carefully before operating the instrument. This contains important information regarding usage, safety and maintenance. The instrument is not waterproof and should not come into direct contact with water, nor should it be used outdoors in the rain. -
Page 3: Table Of Contents
Contents Safety Instructions ..Technical Specifications .. Introduction ....Layout of the meter ..Operation and use ..LED displays ..... Troubleshooting ....Exposure Guidance ..Guarantee ...... Approvals and Contact ... -
Page 4: Technical Specifications
Technical Specifications Typical overall frequency response using the internal antenna: 200 MHz – 8000 MHz ± 3dB ± 0.01 V/m 150-200 MHz and 8-10 GHz ± 6dB Measurement Range: Peak: 0.02 - 6.00 volts per metre, V/m Average 1-100 000 microwatts/sq.metre µW/m The detector can respond to levels below 0.02 V/m - audio from demodulation may... -
Page 5: Introduction
Sound samples and a RF unit converter to help you identify different signals are available on: http://www.emfields-solutions.com/rf... -
Page 6: Layout Of The Meter
Layout of the meter Key: 1. Display 2. Peak signal LEDs 3. Average power LEDs 4. Audio jack, mono, 3.5mm 5. Volume control 6. On - Off switch 7. Internal Antenna 8. Loudspeaker 9. Battery compartment... -
Page 7: Operation And Use
LEDs should at once display a moving pattern across all LEDs and the LCD should briefly display “Acoustimeter v04 © EMFields 2015” changing to readings after a short time. Hold the bottom of the instrument in one hand at least 30cm from your body as close proximity to your body will affect the readings. - Page 8 Microwaves are reflected off the ground and other surfaces so it is important to check all angles. The highest readings will often found when holding instrument facing you at an angle between horizontal and vertical. We recommend taking the highest reading found in any one spot, as this is when the antenna is most closely aligned with the directionality of the signal.
- Page 9 Why are there two different readings? The Acoustimeter is unique in the way it displays information about its readings. There are two different displayed results, showing values for Peak and Average measurements. At first, this may seem confusing. We believe that it is important to know both when assessing your exposure to modern telecommunication signals.
- Page 10 Differences between peak & average With an analogue system, the peak and average levels should be similar, as the signal is continuously on while it is being used. However, because most digital systems spend a large proportion of their time not transmitting, the average level does not represent the actual waveform even though it is technically accurate as shown in the diagrams below.
- Page 11 Why does this matter? Since wireless communications were first developed on a large scale, the scientific community held the opinion that “if it does not heat you it will not hurt you”, as 50 years ago, these were the only effects that were acknowledged.
- Page 12 The more pulsatile the signal is, the higher the peak scale will read in comparison to the average power scale. The EMFields website has an RF unit converter for CW signals on this page: http://www.emfields-solutions.com/rf What do the LED colours mean?
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Page 13: Led Displays
1 W/m = 1,000,000 µW/m = 100 µW/cm = 0.1 mW/cm... -
Page 14: Troubleshooting
Troubleshooting The meter is not working. Check switch is in the “on” position. Check that the batteries are correctly fitted. The batteries may be flat. Try changing them. Note: If the LCD is displaying a reading, then the meter is turned on and working. LCD is blank or shows black squares. - Page 15 The instrument is giving readings that surprise me. Are they correct? Our extensive tests have shown that the Acoustimeter readings usually give a good indication of the microwave levels present. Measuring pulsing RF signals over a wide frequency range is extremely difficult to do. Even professional instruments costing many thousands of pounds have quite large error margins.
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Page 16: Exposure Guidance
Frequency General Public Levels ICNIRP, 1998 (recognised by WHO, EU & UK ) 1800 2100 Russia 2003 (general public), PRChina 300 - 300000 Italy, Decree 381 (1999) 30 - 30000 Swiss Ordinance ORNI, rms values , (for base stations) 1st. Feb. 2000 1800 EU &... - Page 17 Frequency E field Power Power µW/m 2 000 000 4 500 000 1800 9 000 000 2100 10 000 000 300 - 300000 100 000 30 - 30000 100 000 1800 spec specified 30 - 2000 not spec not spec 900, 1800, 2100 0.024 24 000...
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Page 18: Guarantee
Disclaimer While EMFields considers that information and opinions given here are sound, you must rely upon your own skill and judgement when interpreting or making use of the information contained in this manual. Guarantee The Acoustimeter comes with a 2 year return-to-base Guarantee. -
Page 19: Approvals And Contact
EMFields Solutions Ltd 12 Mepal Road Sutton, Ely Cambridgeshire CB6 2PZ, UK Tel: (+44) (0)1353 778814 info@emfields-solutions.com Email: www.emfields-solutions.com European Approvals CE, ROHS and WEEE The Acoustimeter meets EN61000-6-3:2001+A11:2004 EN61000-6-1:2001 EMC standards and also meets ROHS 2 2011 (2002/95/EC) and WEEE (2012/19/EU) (2002/96/EC) The Waste Electrical &...
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