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Summary of Contents for Envionic FA845
- Page 1 FA845 Users manual version 1.5 Field Analyzer FA845 Users Manual Also for the FA720, FA725, FA730 and FA735 www.envionic.com Envionic...
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Page 2: Table Of Contents
FA845 Users manual version 1.5 Contents Contents ............................2 Introduction ..........................4 Accessories delivered with the device ..................6 Chapter 1 General ........................7 Switching ON or OFF ....................7 Micro-SD memory card ....................8 Choosing what to measure ..................... 9 Speaker ........................ - Page 3 FA845 Users manual version 1.5 View measurements with your computer ..............45 Appendices ..........................46 Appendix 1 Specifications FA845 ..................46 Appendix 2 Conversion from microwatt /m² to milliVolt /meter........47 Appendix 3 More information ..................48 Appendix 4 Abbreviations ....................
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Page 4: Introduction
1.5 Introduction This manual is intended for the FA845, and also for the FA720, FA725, FA730 and FA735. But these last four devices do not have all features of the FA845. The features of the devices can be found in the next table:... - Page 5 FA845 Users manual version 1.5 The FA845 is a sensitive measurement device that measures three kinds of fields. The fields measured are: 1) High frequency electromagnetic fields that are emitted by: - GSM mobile telephones and their base station/ broadcasting masts...
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Page 6: Accessories Delivered With The Device
Cardreader to connect the micro- SD card to the USB port of your computer The memory card and cardreader are only delivered with the FA725, FA735 and FA845 Two AA Alkaline batteries (or, optional, two NiMH rechargeable batteries) Optional charger for the NiMH rechargeable batteries. -
Page 7: Chapter 1 General
The operating state of the meter is always visible at the left top of the screen. Immediately after switching on, this is 'Home'. You will also see the current date and time (for FA845, FA735 and FA725). When the date or time is not correct, you can set these (see section 1.7). -
Page 8: Micro-Sd Memory Card
FA845 Users manual version 1.5 Micro-SD memory card The micro-SD memory card should only be placed or removed when the device is switched off. The card should be placed with its contacts pointing upwards to the top of the device . -
Page 9: Choosing What To Measure
FA845 Users manual version 1.5 Choosing what to measure The function of the frontside buttons will be visible on the bottom of the screen as long as the device is switched on. Directly after switching on, you can choose what you want to measure: Push the 1 button (“RF”) to measure the high frequency electromagnetic field (chapter 2). -
Page 10: Speaker
FA845 Users manual version 1.5 Speaker After choosing what to measure, you can set the sound to a certain volume with the buttons "Vol+" and "Vol-". (This does not apply to the SCAN and EXPERT modes.) During setting of the volume, the volume setting is displayed. It can be set to a value on a scale from 0 to 8. -
Page 11: Batteries
FA845 Users manual version 1.5 Batteries Battery condition When the batteries are almost empty, this will be shown on the screen: At first, as a partly filled battery (see picture) After some time, the filling in the battery picture will blink When the battery can no longer be used, an empty battery symbol will blink. -
Page 12: Changing Or Charging Batteries
FA845 Users manual version 1.5 Changing or charging batteries Mains adapter connection If rechargeable batteries are used, you can charge them by connecting the delivered wall adapter to the device and to an outlet. After 10 hours, the batteries will be charged completely. -
Page 13: Setting Time And Date
2 Put your memory card in the cardreader and connect it to your PC 3 Copy the file with the new software to the memory card 4 Place the memory card in the envionic device again, and switch it on 5 On the device, select 'menu' and then 'card'... -
Page 14: Chapter 2 Rf High Frequency Electromagnetic Field
FA845 Users manual version 1.5 Chapter 2 RF High frequency electromagnetic field When this is selected, "RF" (Radio Frequency) will be visible at the upper left top of the screen. A suitable antenna must be connected. The AL700 antenna delivered together with the device is a "LogPer"... -
Page 15: Measurement With Omni-Directional Antenna
FA845 Users manual version 1.5 Measurement with omni-directional antenna Omni-directional antennas Several omni-directional antennas are available separately: A ANT-800 GSM (824-960, 1710-1990 MHz) and UMTS (1920-2170 MHz) B ANT-2400 WLAN (2400-2483 and 5150-5825 MHz) C ANT-400 TETRA (380-450 MHz) For a omni-directional antenna (not included), the device should be held in a vertical position, with the antenna pointing upwards. -
Page 16: Display
FA845 Users manual version 1.5 Display On the screen you can now directly read the strength of the signal ( in microwatt per square meter). When the signal is pulsed, the shown strength is the strength at the top of the pulse. -
Page 17: Frequency Measurement
FA845 Users manual version 1.5 Frequency measurement The frequency of all signals is measured, and the frequency is assigned to one of the following categories: from 0.3 up to 2.8 GHz, 26 categories, ascending per 0.1 GHz from 3.0 up to 4.0 GHz, in category “3 - 4”... -
Page 18: Hold Function
(FA725, FA735 or FA845). In the "fa.ini" file (explained in the SCAN chapter), add the following line at the beginning (before the first "#"). -
Page 19: Display Signal Pulsation
FA845 Users manual version 1.5 Display signal pulsation Instead of a bar diagram that shows the signal strength as a function of the frequency category, you can also show the signal strength as a function of time. If the signal is pulsed, this will show the pulses of the signal. -
Page 20: Safe Values
FA845 Users manual version 1.5 Safe values When you choose "Safe", you will see (together with the measured value) what values are safe for the RF electromagnetic field strength during sleep, according to the German SBM2015 standard. Also the values with qualification “slight concern”, “severe concern” and “extreme concern”... -
Page 21: Chapter 3 Rf Scan Mode
Chapter 3 RF SCAN mode Spectrum analyzer introduction The spectrum analyzer in the FA845 measures only a single frequency at a time, but it can scan through a range of frequencies (with a speed of 100 frequencies per second, for instance). -
Page 22: Scan Display
FA845 Users manual version 1.5 SCAN Display In the SCAN mode you will see the following screen: Information about the selected frequency band (here: GSM900) The frequency of the strongest signal in MHz Graphic area with Start and Stop frequencies (925 and 960 MHz for GSM900) -
Page 23: Scan Frequency Bands
FA845 Users manual version 1.5 SCAN Frequency bands The selected band will be shown at the left side of the screen (at position A, see previous section), like this: Shown on screen Meaning Band number Band name (GSM 900) Downstream, Europe ↓... -
Page 24: Scan Peak Display
FA845 Users manual version 1.5 SCAN Peak display A dotted line (D) will show the position of the strongest signal (called Peak). The frequency of the strongest signal is shown at the left side of the screen (B), and the strength is shown on top. -
Page 25: Other Functions In Scan Mode
FA845 Users manual version 1.5 Other functions in SCAN mode The up- and down buttons make several other functions available: A. Frequency band selection (as explained in section 3.3). Use the "Sngl" button for continuously measuring at the peak frequency (see next section). -
Page 26: Single Frequency Measurement
The device acts as a "superheterodyne" receiver (see Wikipedia), which means you could see mirror image frequencies. In the FA845, the mirror frequencies are recognizable as follows: In SNGL mode, the device uses two different intermediate frequencies ("IF" Intermediate Frequency). Every second, it changes the IF frequency and the local oscillator between two values. -
Page 27: Scan Mode Hold Function
FA845 Users manual version 1.5 SCAN mode Hold function The device remembers ("holds") the maximum value for each measured frequency. So, when the input signal is removed, you only see the thin line of maximum measured values, as illustrated in the next diagram (where the antenna has been disconnected to remove the signal): You see that the display shows .00001, the actual level with disconnected antenna. -
Page 28: Define A List Of Frequency Bands
FA845 Users manual version 1.5 Define a list of frequency bands You can define your own list of frequency bands. On your PC, create a file called "fa.ini". You can edit the file with notepad or another suitable edit program (but not with "Word"). An example band list is the following: #S925;... - Page 29 FA845 Users manual version 1.5 You can have multiple band list files. The name should be "xxxxxxx.ini" (xxxxxxxx can be any name you want, max. 8 characters). If the file is not "fa.ini", it may also be located in a subdirectory.
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Page 30: Chapter 4 Rf Expert Mode
1.5 Chapter 4 RF Expert mode The expert mode gives full control over the operation of the spectrum analyzer of the FA845. To switch from SCAN mode to EXPERT mode, select "Disp" with button 4 and then use button 2 ("Xprt"). -
Page 31: Xprt Functions
FA845 Users manual version 1.5 XPRT functions The spectrum analyzer provides the following control functions, in several button modes (button modes are selectable with the "up" and "down" buttons): A. SPAN: Step up or down through a sequence of SPAN values (using ‘left’ and ‘right’... - Page 32 FA845 Users manual version 1.5 The Resolution bandwidth (RBW) can be used to make a trade-off between sensitivity and measurement time: Low RBW: High sensitivity (low noise level), but slow measurement. High RBW: Fast measurement, but lower sensitivity (high noise level) Image frequency detection: In XPRT mode, you can switch to another intermediate frequency with the IF-A function.
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Page 33: Frequency Control
FA845 Users manual version 1.5 Frequency control In FREQ mode, you can shift the frequency range up or down with the ‘left’and ‘right’ buttons in "half SPAN" steps. The SPAN will not change. So, if the setting was START = 600, STOP = 800 (so SPAN=200), after pressing the "right"... -
Page 34: Directly Enter Center Frequency
FA845 Users manual version 1.5 Directly enter Center Frequency When CF "center frequency" is selected, you can directly enter a new center frequency. Press "Num" (button 2). You get the following screen: The first 3 buttons can be used to enter the digits that are in a box (1, 2 or 3 here). -
Page 35: Changing The Span
FA845 Users manual version 1.5 Changing the SPAN By changing the SPAN, you can increase or decrease the difference between the START and STOP frequencies. The frequency in the middle (CF, center frequency) will stay the same. Example: Suppose START = 600, STOP = 800 (so SPAN=200). If you decrease the SPAN from 200 to 100 MHz, you will get : START = 650, STOP = 750 (so SPAN=100). -
Page 36: Directly Enter Start And Stop Frequency
FA845 Users manual version 1.5 Directly enter START and STOP frequency It is also possible to directly enter a START and STOP frequency: In FREQ or SPAN modes, press button 1 and keep it pressed during one second, this gives you the following screen: Now, pressing "Num"... -
Page 37: Chapter 5 Low Frequency Electric Field
FA845 Users manual version 1.5 Chapter 5 Low frequency electric field Orientation Electric field sensor position The sensor is internal, at the left side of the device. An antenna is not needed. The device should be held in a vertical position, with the sensor pointing to the direction in which you want to measure. -
Page 38: Measurements
FA845 Users manual version 1.5 Measurements The display will show the strength of the electric field in V/m (Volts per meter). It will also show the waveform. The vertical height of the waveform is automatically adjusted for optimal visibility. The range is 0.5 V/m up to 199 V/m. -
Page 39: Safe Values
FA845 Users manual version 1.5 Safe values When you choose "Safe", you will see (together with the measured value) what values are safe for the electric field strength during sleep, according to the German SBM2015 standard. Also the values with qualification “slight concern”, “severe concern” and “extreme concern” will be visible. -
Page 40: Chapter 6 Low Frequency Magnetic Field
FA845 Users manual version 1.5 Chapter 6 Low frequency magnetic field Measurement The magnetic field sensor is placed at the right side of the device. An antenna is not needed. The human body does not shield the magnetic field (as opposed to the electric field), so it is not very important how the device is held in your hand. -
Page 41: Safe Values
FA845 Users manual version 1.5 If you choose “Hold” (switch this on as described in chapter 1), the measurements will stop, and the last measurement will be frozen on the screen, until “Hold” is switched off again. Safe values When you choose "Safe", you will see (together with the measured value) what values are safe for the magnetic field strength during sleep, according to the German SBM2015 standard. -
Page 42: Chapter 7 Displaying Logged Measurement Results
Chapter 7 Displaying logged measurement results Display logged measurements on the device itself Every 10 seconds, the FA725, FA735 and FA845 devices store the measured value on their micro-SD memory card. You can examine all stored values. Press button 4 or 5 to choose the “Mem” functiongroup. - Page 43 FA845 Users manual version 1.5 Signal strength per quarter of an hour After selecting the measurement, you will see a bar diagram with the maximum strength of every time period. Every bar in the diagram is a period of 15 minutes.
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Page 44: Connecting The Micro-Sd Card To Your Pc
FA845 Users manual version 1.5 Connecting the Micro-SD card to your PC You can also see the stored measurements as a spreadsheet on your PC with Microsoft Excel. Switch the device off, and remove the micro-Sd card. Use your nail to press the micro-SD card a little, the card will then be released and you can take it out. -
Page 45: View Measurements With Your Computer
FA845 Users manual version 1.5 View measurements with your computer At row 1 you see the software version, the date, and the serial number of the device. Row 2 indicates the moment when the electrical field measurement is started. The values for electric field measurement are in row 3 up to 5. -
Page 46: Appendices
FA845 Users manual version 1.5 Appendices Appendix 1 Specifications FA845 High frequency: - High frequency RF Measurement: 300 Megahertz up to 6.0 Gigahertz (with frequency measurement) Display in micro-Watt per square meter (µW/m²) , Volt per meter (V/m) or dBm. -
Page 47: Appendix 2 Conversion From Microwatt /M² To Millivolt /Meter
FA845 Users manual version 1.5 Appendix 2 Conversion from microwatt /m² to milliVolt /meter. The screen displays the strength of the radiation in microwatt per square meter (µW/m²). The unit ‘Volt per meter’ (V/m) is also frequently used, and can be calculated with the following table. -
Page 48: Appendix 3 More Information
FA845 Users manual version 1.5 Appendix 3 More information www.powerwatch.org.uk www.mast-victims.org www.tetrawatch.net The SBM2015 can be found at: http://www.baubiologie.de Appendix 4 Abbreviations Hertz Unit for the number of cycles per second KiloHertz 1000 Hertz MHz MegaHertz 1000000 Hertz GigaHertz 1000000000 Hertz...
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