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Acoustimeter User Manual

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Summary of Contents for AM-10

Page 1: ...Acoustimeter User Manual ...

Page 2: ... the range 200 MHz to over 8000 MHz 8 GHz which covers the frequencies used by most modern communication systems encountered in our everyday environment The Acoustimeter was designed using the experience gained from many years of practical RF and microwave measurements using a wide variety of professional instruments Readings are shown on both an LCD display and two series of graduated LED lights ...

Page 3: ...screwing the case will void the guarantee Specifications Typical overall frequency response using the internal antenna 200 MHz 8000 MHz 3dB 150 200 MHz and 8000 10000 MHz 6dB Measurement sensitivity 0 02 to 6 00 volts per metre V m 1 to 100 000 microwatts per square metre µW m2 The detector can respond to levels below 0 02 V m audio from signal demodulation may be heard at RF levels below 0 02 V m...

Page 4: ...4 Instrument guide Key 1 Display 4 Audio mono 2 5mm 7 Internal antenna 2 Peak signal LEDs 5 Volume control 8 Loudspeaker 3 Average power LEDs 6 On Off switch 9 Battery compartment ...

Page 5: ... still to take a reading Bear in mind that even moving the meter small distances can result in detecting very different levels of microwave energy Microwaves are reflected off the ground and other surfaces so it is important to check all angles The highest readings will often be found when holding the instrument facing you at an angle between horizontal and vertical We recommend taking the highest...

Page 6: ...ween data bursts This produces a non continuous signal which we describe as pulsing It is these amplitude changes that the Acoustimeter allows you to hear An analogue signal is a system of communication that is not digital The old TV system most radios walkie talkies and hearing aids are examples of analogue signals They use a continuous carrier and instead of turning on and off to represent data ...

Page 7: ... m Many electrosensitive individuals report adverse health effects in areas that have quite high peak levels but have average field strengths below the more precautionary average power guidelines You can mathematically convert between V m and µW m2 but this is only accurate if you have a continuous waveform CW carrier signal See Appendix C for further details What do the different LED colours mean...

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Page 9: ...eadings Make sure your fingers are clear of the aerial Digital signals pulse which means that peak signals are not consistent The instrument is very sensitive and picks up these variations Make sure you hold the instrument still or place it on something to hold it steady Field levels can vary substantially even over small distances Regular high blips every few seconds may be due to a rotating rada...

Page 10: ...resent The peak signal is high but the average signal is low This is normal and to be expected from modern digital microwave frequency signals The instrument is on but the LCD screen is blank or shows a row of black squares The instrument is stuck because it was turned off then on too quickly Make sure that you leave 1 second between turning it off and turning it on again The instrument makes thre...

Page 11: ...areas near base station masts can be higher 900 1800 2 0 01 10 000 USA City Dweller max FCC 1999 Aprx 30 300000 2 0 01 10 000 Wien Vienna Sum of GSM 1 9 0 01 10 000 Italy 2003 each base station aim Lichtenstein law from 2013 900 1800 2100 0 6 0 001 1000 Salzburg 1998 2000 Sum of GSM 0 6 0 001 1000 BioInitiative 2007 30 300000 0 6 0 001 1000 EU Parliament GD Wissenschaft STOA GSM 2001 900 1800 2100...

Page 12: ...orm of the signal European Approvals CE ROHS and WEEE The Acoustimeter meets EN61000 6 3 2001 A11 2004 EN61000 6 1 2001 Electromagnetic compatibility EMC standards and also meets the ROHS 2002 95 EC and WEEE 2002 96 EC requirements The Waste Electrical and Electronic Equipment WEEE Directive requires that unwanted electronic equipment must be disposed of using specialist recycling Your Acoustimete...

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