Made in Germany
NFA 30M
3D LF Magnetic Field Analyzer with Data Logger
NFAsoft
Analysis and Configuration Software
Operating Manual
Version 7.3
Page 1: ...Made in Germany NFA 30M 3D LF Magnetic Field Analyzer with Data Logger NFAsoft Analysis and Configuration Software Operating Manual Version 7 3 ...
Page 2: ...ing biology Contents 1 Quick Start Guide 1 2 Overview Front Cover 1 3 Display 2 4 Switches Push Buttons Connector 3 5 How to Measure and Data Log 6 6 Power Supply 7 7 NFAsoft 9 8 Firmware Update 17 9 What if FAQ 19 Do not leave in the hot car protect from humidity This manual is based on the firmware version 75 and NFAsoft version 172 The firmware and software of the NFA will be continuously impro...
Page 3: ...he NFA after a couple of minutes and on again in order to update the information see page 2 Signal default setting is tRMS On Measurement in process Log Long term recording in process Double click NFAsoft and follow your intuition for an evalua tion of the data recorded on the SD card Should the meter not do what you expect please turn to the chapter on frequently asked questions at the end of thi...
Page 4: ...ll show FULL prior to loading which is to be ignored FULL During the charging process with the mains adaptor connected this indication means charging completed bat tery loaded During normal operation however FULL means the SD memory card is full nbAt The processor cannot recognize the battery see the note below The time indications are set up as follows XXXd XXX days or Xd XX X days and XX hours o...
Page 5: ...Ds The isotropic point of the magnetic field meas urement is underneath the Y of the coordinate system printed on the meter faceplate Value re cordings will be axis specific 4 3 AC DC input AC DC combined AC DC input As soon as an external sensor is connected to the device its signal is automatically displayed in mV and recorded if re quired AC A displayed value of 2000 corresponds to 1Vpeak peak ...
Page 6: ... Hold maximum value Max hold Retains tRMS or Peak of the signal depending on the switch position from which Hold was chosen When setting the signal switch to Hold the reading on the display will be held but the value recorded on the SD card will still be the real time value 4 5 SD Memory Card This is the slot for the SD card Insert until it snaps use fingernail or pencil if necessary To withdraw p...
Page 7: ...d disconnect the USB cable only while the NFA is switched off Please note for the time being the USB connection works for windows and Linux only 4 7 Charging Socket For the connection of external DC sources External supply 12 V battery or 12 V DC power supply unit is sufficient to keep the instrument operational for long term data logging but will not recharge the battery Charging 15 to 18 V DC ba...
Page 8: ...onds In this mode the LEDs and the sound are turned off to extend the battery life after a while also the green status LED The display will show the log file number L the elapsed time of recording as well as the remaining time of use in an infinite loop until the battery is empty or the SD card full For information on the display format please see chapter 3 When switching back to On recording will...
Page 9: ...erefore not recommendable Thanks to a sophisticated algorithm the NFA charging pro cess will start off extremely quickly but will slow down to wards the end in order to achieve maximum loading capaci ty Due to the large variation in the Lithium Ion batteries supplied by their manufacturer the maximum capacity as well as the charging time are subject to fluctuations The specified battery running ti...
Page 10: ...sons please only use original battery packs classified by us integrated protection circuit The two bat tery cells fit tightly but can easily be removed for the pur pose of battery change In no case untighten the screws of the meter Putting the meter together is very complicated and therefore subject to a fee if it needs to be done by one of our technicians 6 To determine the emission created by th...
Page 11: ... upwards Linux and Mac versions are provided as is NFAsoft requires no installa tion just double click and start In some cases it might be necessary to temporarily dis able your anti virus software Anti virus software may in terpret NFAsoft as a threat and hence might disable or even erase it Avoid this by placing NFAsoft on your white list You may have to repeat this with every upgrade version of...
Page 12: ...mes of start and end of the logging period If the status line is mouse clicked the win dow on the right will appear Here one can enter a preferred time span to view The time span can also be selected in the View menu The colouring scheme of the plot corresponds to the stand ards for building biology measurements SBM2015 Green for no concern Yellow for slight concern Red for severe concern Purple f...
Page 13: ...e triangle to the left of the channel If multiple channels are open an additional click on the channel information will bold the channels plotted data and its statistical data The top five values are standard statistical values7 The numerical value Edges per hour is used to analyse the number of steeply rising edges spikes peaks pulses sharp bursts or high frequency transients of the field The edg...
Page 14: ...ns are self explanatory View Edge Display Select the menu option View Edge Display to activate the edge display The edge display option will help find im portant field strength fluctuations Steep edges are marked in the diagram in the colour corresponding to each channel the marked channel will be bolded the others won t This way you will always have an overview of what s going on in the other cha...
Page 15: ...t points of time by a user de fined absolute increment lev el in V m mG or nT Relative increment Marks a rise of measured field intensi ty between adjacent points in time by a user defined factor or multiple Slope Marks a rise of measured field intensity between adjacent points in time by a user defined slope rate in V m mG or nT per second This is independent of the measuring intervals A hypothet...
Page 16: ...quently convert a chosen channel s data from milliGauss to nanoTesla and vice versa Convert Units This function can be used to display whichever values rec orded via the AC DC input port directly in its original unit This way an HF recording can be shown either in µW m or V m A new channel will automatically be generated thus avoiding any potential loss of data Rename or Delete Channel Allows to r...
Page 17: ...lly loaded by the NFA upon its next start when saved on the SD memory card Several customized pre settings for NFAsoft can be defined allowing a quick access Simply select the settings as re quired and activate the button save as pre setting for NFA soft All pre settings are stored in the file NFAsoft ini and are available for NFAsoft provided that this file is in the same folder For a synchronisa...
Page 18: ...idal waves at exactly 16 7 Hz are still recorded separately and can be shown with the help of the NFAsoft If the filter is set it is therefore not unusual for the summary indication All3D to be smaller than the indication for 16 7 Hz as the signal components at 16 7 Hz are not integrated in the total sum of All3D Furthermore the signals of the different frequencies are added up quadratically which...
Page 19: ...ive firmware version always with either the prefix F or E In order to switch from one version to the other please press both the key as well as the key at the same time while switching on the meter Procedure for the Update First make sure to have firmware version 058 active before starting the update procedure This way you will always up date the other version on your meter Copy the new FIRMWARE N...
Page 20: ...ade in Germany January 2018 18 Gigahertz Solutions GmbH Please remember to unlock the SD card after applying the new firmware Recalibration of the battery capacity display please see next page Chapter 9 ...
Page 21: ...d battery capacity reading If applicable disconnect external power supply from the meter Leave the meter switched on for a couple of minutes so that it can recalibrate itself in the background then switch off and on again Now the updated remaining battery life in the log mode will be displayed For a recalibration leave the meter running with out the AC adapter until it automatically switches off L...
Page 22: ...p as square root out of the sum of squares which means that a simple addition of the individual signals will result in a higher value than the sum of All3D For example if you take 500 nT at 16 7 Hz plus 1000 nT at 50 Hz a simple addition will amount to 1500 nT whereas the quadratic addition All3D will amount to only 1118 nT NFAsoft is showing measurement values at 16 7 Hz in spite of the 50 Hz hig...
Page 23: ...where are they saved CONFIG NFA user configurations of the NFA SD card NFAsoft ini Pre settings for NFAsoft same folder as NFAsoft FIRMWARE NFA operating system of the NFA SD card There are very many small TXT files on the SD card Solution 1 You have activated the function permanent logging which causes the meter to log not only when switched to Log This option will cause a new file to be started ...
Page 24: ...acturer Gigahertz Solutions GmbH Am Galgenberg 12 as of May 2018 Im Kessel 2 90579 Langenzenn Germany Tel 49 9101 9093 0 Fax 49 9101 9093 23 www gigahertz solutions de www gigahertz solutions com Ihr Partner vor Ort Your local partner ...
