Gigahertz Solutions NFA 30M User manual

Made in Germany
NFA 30M
3D LF Magnetic
Field Analyzer
with Data Logger
NFAsoft
Analysis and
Configuration
Software
Operating Manual
(Version 7.1

Made in Germany
Thank you!
We thank you for the confidence you have shown by buying this product. It allows
for a professional analysis of AC electric and AC magnetic fields according to inter-
nationally recognized guidelines and the recommendations of the building biology.
Über diese Anleitung hinaus bieten wir Praxisseminare und auf unserem Kanal bei
youtube.com Schulungsvideos zum fachgerechten Einsatz des Gerätes an.
Contents
1Quick Start Guide ............................................................................................ 1
2Overview: Front Cover..................................................................................... 1
3Display ............................................................................................................. 2
4Switches / Push-Buttons / Connector............................................................. 3
5How to Measure and Data-Log ....................................................................... 5
6Power Supply .................................................................................................. 6
7„NFAsoft“......................................................................................................... 8
8Firmware-Update............................................................................................14
9What if… (FAQ)...............................................................................................14
This manual is based on the firmware version 67 and NFAsoft version 169.
The firmware and software of the NFA will be continuously improved and made available via e-mail or download
from our homepage.

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1Quick Start Guide
The instructions below refer to the factory default settings. These settings can easily
be customized with the help of the supplied software „NFAsoft“.
When you switch on the instrument the LCD will briefly show “batt” and the remain-
ing operation time with the current capacity of the batteries (you may need to switch
off the NFA after a couple of minutes and on again in order to update the infor-
mation).
“Signal” -> default setting is tRMS
“On” = Measurement in process
“Log” = Long term recording in process
Double-click NFAsoft and follow your intuition for an evaluation 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 this manual (Chapter 9)!
2Overview: Front Cover

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3Display
In general, the display will show the three dimensional (“resulting”)
magnetic field. There is no need for a conversion: Simply read the
measurement value on the display and the unit on the LEDs. The signal
of an AC/DC input possibly connected to the device will be shown in
millivolt. Use the key “^” to switch from one display mode to the other.
Special LCD Display Messages
“Low Batt“: The rechargeable battery is low – please charge the battery
“Err.“: Short for ‘Error’. Indicates an erroneous configuration.
„----“: No reliable values to be shown – either due to the instrument’s transient ef-
fect, or the value is within the range of the instrument’s residual noise.
„CHAr“: Instrument is being charged.
(For technical reasons the display will show “FULL” prior to loading, which is to be ignored)
„FULL“: During the charging process, with the mains adaptor connected, this indi-
cation means: charging completed, battery loaded. During normal operation, how-
ever, “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 or
„XX.XX“: XX hours and XX minutes
„XX.XX“: (with blinking dot): XX minutes and XX seconds.
Elapsed time will be shown when switching on and while logging.
Please note: when switched on, the NFA will normally show the remaining battery
life. However certain events may cause wrong times, “00:00” or “nbAt” to be dis-
played. In that case please leave the meter switched on for a few minutes to perform
its calibration algorithm, then switch off and back on to display the updated battery
life for the “Log” mode. If case the false readings persist, please check chapter 9 for
further information.

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4Switches / Push-Buttons / Connector
4.1 On / Off switch (“Power“)
“ON” = Measurement in process. When measuring, logging is not automatically acti-
vated. Briefly press “Log” until the status LED turns green to activate parallel log-
ging. You can switch back to "On" without interrupting the logging process.
“Log” = Logging / long term recording.
4.2 Tesla/Gauss Switch
This switch allows to select the display unit for the magnetic field – the selection is
indicated by the LEDs.
The isotropic point of the magnetic field measurement 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 required.
AC: A displayed value of 2000 corresponds to “1Vpeak-peak“ 1.
DC: +/- 0.1 to 1500 mV, i.e. with an HF59B connected and in the coarse measuring
range (scaled to 1V), the device logs measurement values from 1 to 30,000 µW/m²;
the display shows mV.2
For logging high frequencies please make sure to remember the settings of the con-
nected HF-Analyser, as they will not be registered by the NFA.
1Note: The information produced by the frequency decomposition of a demodulated pulsed HF signal will, of
course, not provide any really useful data.
2For all measurement ranges, even when using an attenuator or amplifier, NFAsoft offers a comfortable conver-
sion tool. The random noise will make it impossible to properly display or record measurement values below
0.1µW/m², though.
Y
X
Z

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4.4 Evaluation of Signal
tRMS = “true Root Mean Square”. The values displayed and record-
ed can be compared directly to classifications recommended by
building biologists.
This is the correct standard setting of the NFA, even for logging the
peak values of a connected HF-Analyser.
Peak = Real peak value measurement: With this setting the meter
measures the highest culminating point of the wave3. A new, still experimental
measurement feature for building biologists which allows for a more detailed analy-
sis of the LF world in a way which has long since been considered essential in the
analysis of high frequencies. This option supplies important information for the eval-
uation of “Dirty Power” (E-field > 2 kHz).
Hold = Hold maximum value (“Max hold”). Retains „tRMS“ or „Peak“ of the signal,
depending on the switch position from which „Hold“ was chosen. When the signal
switch is set to „Hold“ only the reading on the display is held, the real time value is
still recorded on the SD card, if recording.
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, press again to undo the snap
mechanism.
The high-speed SD memory card (4 GB, SDHC) supplied with the
instrument contains the current version of the NFAsoft software and
enough memory for several 36h recordings. Important: Please make sure to only use
SANDISK cards! We have had a lot of bad experiences with other manufacturers.
Your PC will recognize the SD card as an external device when connected by USB
cable or inserted into a card reading device. It can then be processed with the
standard functionality of your operating system. Inserting the SD memory card di-
rectly into the card reader of the PC will result in a 40 times faster data transfer than
if using the USB cable4.
Please note: Do not remove the SD memory while the NFA is running!
3The resolution of the frequencies during the analysis of the (actually by their nature broadbanded) peak values
does not consider phase information that is being a worst-case consideration. Tolerances are much higher than
using the tRMS analysis.
4In order to make use of this speed advantage, your SD card reader needs to be specified „SDHC“ which is
standard for units built 2008 or later. For older units inexpensive adaptors are available.
Signal
Peak
tRMS
Hold

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4.6 Charging Socket
Computer interface connection: Used for meter configuration
with NFAsoft. (USB 1.0) Please connect and 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 battery or AC adaptor is required to charge the instrument.
Measurements or recordings parallel to the charging procedure are technically pos-
sible, but not specified, therefore not to be recommended.
4.8 “
∧
” and “
∨
” buttons
These buttons are at present only needed for a firmware update.
5How to Measure and Data-Log
5.1 “Live”-Measurement
You have the choice of two basic measurement modes: You can either apply the
conventional method which involves switching the unit on and reading the display.
Or you prefer to have the measurement values of all four channels (those of the
three field axis plus one further measured variable) logged onto the SD-card. To ac-
tivate this function, please switch the Power-button to “Log” for a short time until
the status-LED turns green. Then switch it back to “On”.
1
2
-
1
5
V

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5.2 Long Term Data Logging
The recording interval of the NFA is set to 10 data sets/sec.
Initiating Long Term Logging of the Meter
For a long-term recording of several hours or days, set the “Power” switch to “Log”.
(The status LED will turn green and long-term recording will start off after a few sec-
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 logfile number
(“L…”), the elapsed time of recording as well as the remaining time of use in an infi-
nite 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 be contin-
ued without interruption.
The instrument records all data corresponding to its field selection switch. When an
HF Analyser is connected to the AC/DC socket, it will automatically be recorded as
channel 4.
“Locking” of the Instrument
„Locking“ ensures that the instrument exclusively executes the predefined tasks
when left at the customer's place for long-term recordings. To lock, remove the SD
memory card from the instrument after predefining the measurement settings, set its
micro switch on the top left of the SD-card to „lock“ or „write protect“ and reinsert
it. Note: The data will still be recorded!
IMPORTANT: Don't forget to unlock the SD memory card afterwards!
6Power Supply
6.1 Internal Rechargeable Battery
The instrument features high performance Lithium Ion rechargeable batteries (2 x 3.7
V). When fully charged, they will allow for more than 48 hours of continuous data
logging5.
5Please note that Li-Ion batteries, even when treated with care, will lose some of their original capacity within
one or two years and their typical life expectancy is 250-500 complete charge cycles. In this case please always
replace both batteries. If possible store in a cool place.

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6.2 Charging
To charge the batteries use the 15 V AC adaptor. If the device is switched off while
charging, the display will show “CHAr” and the potential runtime of the instrument
with the current capacity status in an infinite loop. Measurements or recordings dur-
ing the charging process are technically possible, but not specified, and therefore
not recommendable.
With a completely discharged battery only about one hour of charging time is suffi-
cient to operate the instrument for a couple of hours. To achieve the maximum op-
eration time, charging will take 12 to 15 hours. Once the full capacity is reached, the
instrument will stop charging automatically and will show "FULL" on the LCD.
6.3 External Power Supply
For logging with external power supply use the 12 V AC adaptor. After a logging
time of more than the typical 24 to 48 hours the probability of an unwanted shut-
down due to unexpected operating situations increases significantly. Longer logging
times can therefore not be guaranteed.
Longterm recordings of the 3D magnetic field and the AC entry can also be done
using external power from an AC adapter. In this case, the adapter should be placed
as far as possible from the instrument and turned in such a way that the resulting
magnetic field is as low as possible, as it can influence the readings.6
6.4 Battery Change
For safety reasons, please only use original battery packs classified by us (integrat-
ed protection circuit. The two battery cells fit tightly, but can easily be removed for
the purpose 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.
6To determine the emission created by the AC adapter at the location of the NFA, proceed as follows:
-Place the instrument and adaptor into their measurement location
-Plug the AC adapter into the wall and to the NFA. Wait until the readings on the display stabilize.
-Disconnect the adapter from the NFA without changing its position and orientation; wait for the display to
stabilize.
This procedure will also be logged and is available when evaluating the logged data on the PC. Now potential
disturbances can be noted on each axis and corrections be made, if necessary.

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7„NFAsoft“
The provided software allows ...
for the analysis of the data logged by the NFA
for the configuration of the NFA according to your preferences and habits.
A double-click on the program-icon opens the window
shown on the left. Here you can chose between the tool for
the analysis of the data and the tool for the user-specific
configuration of your NFA .
The software is subject to continuous upgrade. The most
current revision can always be found for download on our
homepage.
System requirements
NFAsoft ismade for Windows (98 and up higher). Linux and Mac versions are pro-
vided “as is”. NFAsoft requires no installation – just double-click and start!
In some cases, it might be necessary to temporarily disable your anti-virus
software. Anti-virus software may interpret NFAsoft as a threat and hence might
disable or even erase it. It may me necessary to repeat this when a upgraded ver-
sion of NFAsoft is loaded. NFAsoft can be loaded and executed directly form the SD
memory card through a card reader or through the USB interface cable. The NFA is
supplied with a „Class 6 SDHC”-SD memory card (appropriate readers have been
available since 2008, adapters are available for older computers).
7.1 Data Analysis
Double click the appropriate log file for analysis and the following window will open:
The far left column labelled “Channels“
shows statistic evaluations of the different
frequencies or frequency ranges.
The large area on the right shows the plot
of the collected data over the time.
The values on the left are always the real-
time values of the timeline selected in the
plot.

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Plotted Data Window
Units of measurement appear on the corresponding channel window on the left and
are not indicated on the y-axis. The different plots are colour coded. This allows for
different channels to be shown simultaneously.
The x-axis indicates the time span. The figures at the left and the
right end of the grey status line show the times of start and end of
the logging period.
If the status line is mouse clicked, the window on the right will ap-
pear. 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 standards for building biology
measurements (SBM2015): Green for “no concern”. Yellow for “slight concern”. Red
for “severe concern”. Purple for “extreme concern”.
If you select two channels with different units, the SBM colour scheme of the plot’s
background will be the one corresponding to the unit of the selected (= bold) chan-
nel. It will be bold for the one and regular for the other, equalling the markings in the
“Statistics/Channels” window.
Navigation within the Plotted Data
Navigation within the plotted data can easily done with a mouse and its scroll wheel.
Move the mouse pointer into the data plot. The scale of the x-axis will be
zoomed in when scrolling up or by using the „Up Arrow“, zoomed out when
scrolling down or by using the „Down Arrow“
centered around the clock time indicated by the position of the mouse
The data area can be repositioned on the x-axis by a left mouse click hold and drag
left or right. One can also use the “right” and “left” arrows of the keyboard. Zooming
of the time on the x-axis can also be achieved via the View Menu.
Scaling of the y-axis is done automatically by default but can be adjusted manually if
desired through the View menu under “Y-Scale”. You can also adapt the scaling of
the y-axis manually via the menu (under “View / Scale”).
Insert Comments directly into the Diagram
Areas of special interest can be commented directly in the plotted data. Simply posi-
tion your mouse, right click and enter your comments in the comment window.
When you click Ok, the comment will be embedded into the data, marking an event
or section of interest.

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Program Window “Statistics Channels”
To display the data of a particular channel, click the triangle to the left of the chan-
nel.
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 edge thresholds can be
defined in the Channel menu under Set edge criteria. This is an experimental func-
tion. PLEASE NOTE: If the 50 Hz high pass filter has been set with the help of the
configuration part of NFAsoft (maybe even as pre-setting), this only applies to the
channels “All3D”, “AllX”, “AllY”, and “AllZ”. Nevertheless, possible frequency com-
ponents at 16.7 Hz will also be recorded in the correspondent channel. In this case
the sum of the frequency specific channels may well be higher than that of “All3D”.
The light-blue field underneath the statistical channel data represents the frequency
distribution of the measured intensities of the specific channel („Histogram“). It is
self-scaling and can be interpreted as follows:
On the left side of the x-axis a formula calculates and plots how often the mini-
mum value has occurred in a given time interval, and similarly on the right side
for the maximum value.
The higher point marks the measured intensity - found most often. The lower
points indicate a specific value measured very seldomly.
Menu
Edit
“Copy all“: Copies the plotted data area as well as the drop-down of the “Statis-
tics/Channels“ section into the buffer – from here it can be inserted directly into your
measurement protocol at any point of your choice. This is similar to a screen shot.
All other edit options are self explanatory.
View
”Edge Display”
Choose the menu option View/Edge Display to activate the edge display. The edge
display option will help find important field strength flucutations. 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 channels, even if your focal point is, for instance, the
7The 95th percentile is calculated heuristically. If the possible deviation exceeds 10%, it will be noted
in parenthesis after the figure in absolute terms.

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3D-value. The threshold value for an edge display can be defined in the menu option
“Channel/Set edge criteria”.
”Set Times”
Choose the “Set Times“ option to scale the graphic to a defined time segment.
“Y-Scale“
Automatic – The y-axis will be scaled automatically to give the best display of the
area selected for analysis.
Manual – The y-axis scaling can be manually controlled in this mode. Allows for
and will assist in analyzing small values (e.g. those over 2 kHz) overshadowed by
other very strong field intensities.
„All“ – zooms out the x-axis and displays the complete data set on the data plot.
The keyboard ”A” keys can alternatively be used.
Use the arrow-keys to take over the functions of the mouse.
Channel
Set Edge Criteria (experimental!)
This feature is new and its intention is to facilitate professionals the dicussion and
analysis of “dirty electricity” beyond today’s definition. Activate “Edge Display” in
the menu option “View” to use this function.
This function allows you to define a threshold value with which a spike can be
marked directly in the “Edge Display” of the plot. This threshold can be selected in-
dividually for every channel. Standard values have been pre-selected as defaults.
When clicking „Set edge criteria“ the following win-
dow opens. Description:
Absolute increment = Marks a rise of measured field
intensity between adjacent points of time by a user
defined absolute increment level in V/m, mG or nT
Relative steepness = Marks a rise of measured field
intensity between adjacent points in time by a user
defined factor or multiple.
Slope = Marks a rise of measured field intensity be-
tween 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
hypothetical interval of 1 second would give that increment. This permits to compare
results recorded with different recording intervals.
Absolute threshold = Marks a rise of measured field intensity between adjacent
points in time by a user defined threshold level in V/m, mG or nT. Any rise beyond
this absolute threshold value will be marked.
The selected edge criteria will be graphically displayed on the top of the plotted data
section and will appear numerically in the field channel statistical data section under
edges per hour for that particular time span. All edge markings displayed appear in
real time and allow for a quick visual analysis.

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When clicking the „ok“ button, the selected criteria and the set value will be trans-
ferred into the statistical values of the channel. When re-accessing the menu option
“Set edge criteria”, the pre-set values will again be displayed (under construction).
Select HF-Unit
This function will only be displayed when selecting „CH 4“in the „Channels“ window
and the data recorded in this channel are those of
an external input device such as an HF-Analyser
(and are therefore recorded in mV). Upon selection
of this point of the menu the following window will
open up for a selection of the HF-Analyser settings
during the recording period.
nT <> mG
This function allows to subsequently convert a chosen channel’s data from milli-
Gauss to nanoTesla and vice versa.
Convert Units
This function can be used to display whichever values recorded via the AC/DC input
port directly in its original unit. This way, an HF-recording can be shown either in
µW/m² or V/m. A new channel will automatically be generated, thus avoiding any
potential loss of data.
Rename or Delete Channel
Allows for a renaming or deleting of the marked channel.
Summarise Channels
The plotted channels (selected on the left) will be added up (“square sum“) and add-
ed as a new channel. The sum of 100/120 Hz, 150/180 Hz, R<2kHz and >2kHz are
considered to be the relevant parameter for the evaluation of “dirty electricity”.
Extras
The first two items in the dropdown menu have been explained already.
Create KML-File
Required as a plugin for the connection of GPS-data, NFA logs and Google Earth
(currently in beta level ). Please ask for the current manual by e-mail.

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7.2 User-specific Configuration
of the NFA
This part of NFAsoft allows for a customized user definable configuration of the
NFA. The configurations will be made available in the “CONFIG.NFA” file of your
NFA. The new settings are automatically 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 ac-
cess. Simply select the settings as required and activate the button “save as pre-
setting for NFAsoft”. All pre-settings are stored in the file “NFAsoft.ini” and are avail-
able for NFAsoft provided that this file is in the same folder.
For a synchronisation of the
time, the SD-card in the
meter should be connected
to your computer via USB-
cable. The synchronisation
will either take place auto-
matically once “CON-
FIG.NFA” is recorded onto
the SD-card, or else the
manually entered time is
applied at that very mo-
ment.
If the high pass is set at 50
Hz, this only refers to the
broad band reading or re-
cording as it reduces the
influence of movement in-
duced field components.
For full information, the fre-
quency components of si-
nusoidal 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 there-
fore 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 differ-
ent frequencies are added up quadratically, which in turn means that the result of
simply adding the individual signals will also differ from the sum of “All3D”.
(For more information on this matter see chapter 9)

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8Firmware-Update
The file: “firmware.nfa“ is the meter’s operating system stored in its internal
memory8. As known from computer programmes, this software is subject to contin-
uous improvements and upgrade, and can be updated as described below. As also
known from computer programmes, a new version of an operating system is always
intensely tested prior to distribution, but errors may sometimes occur which are only
detected in the course of its use. For this reason, there are always two versions of
the firmware on the internal memory of the meter. One is revision 058 which has
been running without problems for many years, and should therefore be kept on the
meter memory for “emergency cases”, the other is the latest revision at the point of
purchase, always with the a.m. risk.
Which firmware is active on your NFA?
If you press the “∨”-key while switching on the meter, you will for a short while be
shown the currently active 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 pro-
cedure. This way you will always update the other version on your meter.
Copy the new “FIRMWARE.NFA“-file onto your SD memory card without changing
it. If need be, overwrite any old versions on the card, as only one “FIRMWARE.NFA“-file should be on the card.
It should NOT be renamed. It can be deleted from the card after the update.
Lock your SD memory card with the small switch on the left side of the card. Insert
SD card into your powered-off NFA. Switch on your NFA. The display will show
“CodE”, the frequency LEDs will gradually change from green to red during the up-
date process. Then all LEDs will turn off except for the status LED. As soon as the
status LED turns green, the update process is completed (this will take a few sec-
onds only).
Do not switch the meter off during the update process!
Please remember to unlock the SD-card after applying the new firmware!
8
Please differentiate: With „NFAsoft“ the firmware can be configured and the user settings stored in the file
„CONFIG.NFA“. This has nothing to do with the firmware itself.

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9What if… (FAQ)
Answers to frequently asked questions regarding the NFA 30M
Make sure you’re always using the most current firmware version!
The device does not react when trying to switch or press a key
Unlock SD-card! (Push micro switch on the left
of the card upwards)
Restart: All switches up – switch off – switch on.
RESET: Switch off meter, open battery compartment, dis-
connect the two battery plugs, reconnect the batteries af-
ter about one minute and switch the meter back on.
The display shows „nBAT“ and/or an absurd remaining battery capacity read-
ing.
If applicable, disconnect external power supply from the meter.
Leave the meter is switched on for a couple of minutes, so that
it can recalibrate itself, then switch off and on again. Now the
updated remaining battery life in the log mode will be displayed
If necessary leave the meter running (without the AC adapter)
until it automatically switches off. Then disconnect one battery
for some moments, reconnect it and charge the instrument ful-
ly. The updated battery life will be displayed when switching the
meter off after a couple of minutes of operation and then on
again.
There is no recording (status LED does not turn green)
Insert or unlock SD-card!
(Push micro switch on the left of the card upwards)
No long-term recording over several hours or days possible
Solution 1: Update your firmware.
Solution 2: There is a file system error on your SD-card. In this
case, save the “good” files and re-format your SD-card using
the original SD-formatter of the SD Association (to be found
under the following link:
https://www.sdcard.org/downloads/index.html).

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The meter turns off after quarter of an hour
NFAsoft allows you to change the interval for the auto-power-
off feature. (Auto-power-off is deactivated while recording!)
The sum of the frequency specific channels is higher than the
value of “All3D”
The signals of the different frequencies are added up quadrati-
cally (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
quadratical addition (= “All3D”) will amount to only 1118 nT.
NFAsoft is showing measurement values at 16.7 Hz inspite of
the 50 Hz high pass filter being set
and
The sum of the 16.7 Hz channel and the other channels is
higher than the value of “All3D”
If the 50 Hz high pass filter has been set with the help of the
configuration part of NFAsoft (maybe even as pre-setting), this
only applies to the channels “All3D”, “AllX”, “AllY”, and “AllZ”.
Nevertheless, possible frequency components at 16.7 Hz will
also be recorded in the correspondent channel. In this case the
sum of the frequency specific channels may well be higher than
that of “All3D”.
The NFA was configurated according to customer require-
ments with NFAsoft, but when restarting, NFAsoft shows the
original settings
The “CONFIG.NFA” file on the SD-card transfers user-specific
configurations to the NFA. NFAsoft can write this file, but not
read it. Therefore you cannot use NFAsoft to check the con-
figuration of the NFA, but only to instal new configurations.
You can save frequently used configurations as presets to a
dropdown menu in NFAsoft.

Made in Germany
© Gigahertz Solutions GmbH - 17 - February 2016
What is the purpose of the individual files and where are they
saved?
“CONFIG.NFA” -> user configurations of the NFA-> SD-card
“NFAsoft.ini” -> Presettings 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 log-
ging”, which causes the meter to log not only when switched to
“Log”. This option will cause a new file to be started each time
the meter is switched on, and each time you switch from one
mode to the other.
Solution 2: There is a file system error on your SD-card. In this
case, save the “good” files and re-format your SD-card using
the original SD-formatter of the SD Association (to be found
under the following link:
https://www.sdcard.org/downloads/index.html).

Made in Germany
February 2016 - 18 - © Gigahertz Solutions GmbH
Hersteller / Manufacturer / Fabricant / Fabricante:
Gigahertz Solutions GmbH
Am Galgenberg 12
90579 Langenzenn
Germany
Tel : [phone]
Fax : [phone]
www.gigahertz-solutions.de / www.gigahertz-solutions.com
Ihr Partner vor Ort / Your local partner
Votre partennaire local / Su socio local: