Goldanalytix GoldScreenCard User manual

Goldanalytix
GOLDSCREENCARD
MANUAL
Coin testing device for precious metal coins

2 | Instructions Goldscreencard
TABLE OF CONTENTS
1. Introduction S.3
2. Scope of supply S.4
3. Measurement principle S.4
4. Measuring environment and safety information S.5
5. Measuring of the operation and display elements S.6
6. Installation of the Goldscreen software S.6
7. Introduction in the software and operation elements S.9
8. Value library S.11
9. Performing the measurement S.12
10. Interpretation of the measurement results S.14
11. Performing the measurement on the way S.18
12. Creating an own value library S.20
13. Updating the value library S.20
14. Limitations of the procedure S.21

Instructions Goldscreencard | 3
Congratulations for purchasing the Goldanalytix
GoldScreenCard, the professional solution for authenticity
tests of precious metal coins and small ingots.
The Goldanalytix GoldScreenCard is an indestructively
working, simply and fast to use testing system for
precious metal coins. The included GoldScreenSoftware
as an intuitive analysis and evaluation tool allows a
reliable display and classification of the measuremente
results. The measurement values are compared to
verified value ranges and you'll obtain a quick and
unambiguous "rightorwrong" statement in a few seconds
without having to interpret the results.
The measuremente principle is based on an inductive
measurement without contact that allows the testing
sample electric conductivity, not only on its surface, but
also until its core. It is a completely pervading testing
procedure.
This measurement device is equipped with the until how
globally unique and patented casing technology. This
allows a robust, reliable and extremely compact
assembly.
Please read the included instruction manual thoroughly
before your first use of the GoldScreenCard.
We hope you'll enjoy using the GoldScreenCard coin
testing device.
1. Introduction

4 | Instructions Goldscreencard
2. Scope of supply
The GoldScreenCard comes with the following
components in a handy carry case:
Scope of supply for the Goldscreencard:
 Goldscreencard coin testing device
 USBconnection cable
 GoldscreenSoftware CDRom
 Accumulator pack
 Manual
3. Measurement principle
The GoldScreenCard uses the characteristic electric
conductivity of metals as its measurement principle. The
possible forging metals like tungsten, lead or tantalum
(because of their density), differ sometimes sigificantly
from pure gold or gold alloys, like e.g. Krügerrand
regarding their conductivity values (see comparison table
conductivity/density).
Conductivity value and density of bullion coins
Material electric con
ductivity [MS/s] Density [g/cm^3]
Silver 61 10.49
Copper 58 8.96
Gold 44 19.32
Tungsten 18.5 19.30
Krügerrand (22K) 9.6 17.55
Palladium 9.2 11.99
Tantalum 7.6 16.60
Lead 4.7 11.34

4. Measuring environment and safety
information
Conventional testing devices at the moment only dispose of
the possibility to determine the testing object's conductivity in
layers near the surface. Core areas made of tungsten or
tantalum that are plated with thick galvanicly deposited
precious metal layers can't therefore be distinguished
reliably.
Unlike the GoldScreenCard: the patented inductive testing
process uses the lowfrequency electromagnetic alternating
fields. The measurement frequency is chosen in a way that
guarantees a complete pervasion of all coin types by the
testing field. The whole sensor system and evaluation
technology is inside the compact casing. Using a USB
interface cable, the signals can be compared to the saved
reference data and interpreted with the included evaluation
software "GoldScreen Software".
Because of the high penetration depth, there will be different
measuring results despite of the same conductivity of the
coins' metal, e.g. for 1 ounce coins and their corresponding
1/2 ounce variants. For this reason, the evaluation software
distinguishes between these coin sizes.
Inside the GoldScreenCard, there is a sensitive evaluation
technology to perform the measurement. In order to perform
an ideal measurement, please keep the following in mind:
1. ) Only use the included microUSB adaptor cable. Low
quality products can cause false measurements or the
destruction of the GoldScreenCard.
2. ) Make sure that the GoldScreencard isn't put on a
metallic surface when measuring and calibrating and don't
put metallix objects near the GoldScreenCard because this
can cause measurement inaccuracies.
Instructions Goldscreencard | 5

5. Meaning of the operation and display
elements
The connections, operation elements and displays of the
tester are illustrated and listed below. The
GoldScreenCard turns itself on automatically, when you
connect it to a PC via the included microUSB cable.
6 | Instructions Goldscreencard
3. ) Don't use the GoldScreenCard near explosive gases,
vapours, dust or in wet environments.
4. ) Use the device at room temperature and not directly
near heat sources (e.g. also fan outputs of notebooks,
etc.). Make sure that the device as well as the coin on top
are in the same temperature range (ideally room
temperature).
Nr. Description
1 Sensor surface with
Positioning circles
2 LEDdisplay elements for
showing the measurement
results
3 Touchbutton for starting
the measurement
4 LEDdisplay elements for
showing the coin type
5 MicroUSB socket for
power supply or data
connection to the PC
6. Installation of the Goldscreen software
Insert the installation CD in the corresponding disc drive
of your PC. If autorun is activated on your computer, the
installation wizard starts automatically. If not, please start
Goldanalytix_Install directly from the CDROM with a
double click.

You'll get there amongst other ways with the key
combination "Windows + E" and by clicking on the CD
Rom/DVDdrive (mostly disc drive D:).
After clicking on the icon "Goldanalytix_Install.exe", the
installation wizard opens and guides you through the
installation of the software on your PC.
The installation package consists of 2 parts, the actual
GoldScreenSoftware package and the corresponding
driver package, which is installed automatically according
to your operation system. The whole installation doesn't
take more than one minute.
For standard installation, confirm the dialogue boxes. The
programme will be installed as usual under the Windows
programme file. The installation of the fitting driver
(CP210x USB to UART Bridge) subsequently starts
automatically.
Instructions Goldscreencard | 7
Software installation

Driver installation
After the installation, you'll find the software (if you chose
so) on your desktop (as an icon), as well as in the start
menu by:
[Start]\Programme\Goldanalytix_SW
The programme starts automatically after the installation.
If the plugged in GoldScreenCard isn't yet detected, cloe
the software and start it again.
Minimum system requirements:
 Windows XP, Vista, 7,8 (at the moment, there is no
support for other OS)
 USBinterface
 Disk space of at least 10 MByte
 at least 128 Mbyte RAM
 CDROM drive
8 | Instructions Goldscreencard

7. Introduction in the software and operation
elements
After starting the software and connecting the
GoldScreenCard to the computer, the software interface
appears as shown below, with the status message
"Device connected" (2).
Instructions Goldscreencard | 9
The following table gives an overview of the most
important display and operation elements.
Nr. Description
1 Navigation bar for additional functions, see tables below
2 Status display; connection display/measurement value inside/
outside of the value range
3 Coin choice  the parameters are activated by double clicking
4 Coin information about the chosen coin, display field of the
chosen coin
5 Display of the current measurement value
6 Diagrammatic measurement value display for classifying the
testing objects in size / unity (socalled "Goldtics") depending
on the conductance and geometry.
The following tables show the functions of each operation
and display fields.

10 | Instructions Goldscreencard
Datei
Schließen Closes the GoldscreenSoftware
Screenshot Speichern... Saves the current measuremente diagram as an
image file
Gerät
Eingabe Messwert A...
After choosing a coin value, this current measurement
value range is saved in storage "A" of the GoldScreen
Card. The LED displays represent the measurement
result for this chosen area (see "Performing the
measurement without the GoldScreen Software").
Eingabe Messwert B...
After choosing a coin value, this current measurement
value range is saved in storage "B" of the
GoldScreenCard.
Kalibrierung... Performing the calibration
Bibliothek
GABib
Open the Goldanalytix value library. It contains all of
our verified reference values at the moment of
purchase. It is updated and extended regularly and is
available for download on the website.
UserBib Open the own library created by the user.
Hinzufügen UserBib
Wert
Function for adding data to the Userlibrary. The coin
to be measured is put on the GoldScreenCard and the
button "Add Value" has to be pushed. So is the button
"Test" on the device, but as long as it takes to read the
measurement values. (see chapter "Creating/Updating
an own value library)
Editieren UserBib
Wert...
Changing an own coin measurement value of the user
library
Einzelwert löschen User
Bib...
Function for deleting values out of the user library
aktuelle GaBib
einlesen... Function for updatingthe GABib

8. Value library
The software allows the user to either use the GABib
saved in the software, or to create an own library (User
Bib) with own values, e.g. for "exotic" coins or medals.
The GABib contains the set value of the most current
precious metal bullion coins. Your measured values will
then be compared to these set values automatically.
The UserBib function allows the user to store the
reference values of own coins in a library. These saved
values then can be used analogoulsy to the set values
from the GABib. This allows you to test the authenticity of
every imaginable coin (under the condition that you
dispose of a definitely real coin of this kind for storing the
corresponding measurement value in your UserBib).
Instructions Goldscreencard | 11
Ansicht
Kurvenanzeige Reset Deletes current diagram
Zoom Standard Normal gradation of the measurement diagram
Zoom Out Macro representation of the measurement diagram
Hilfe
Handbuch Opens the GoldScreenCard manual
Web Opens the Goldanalytix website

Connect the GoldScreenCard with
the USB cable to your computer
and start the GoldScreenSoftware
(you can find help for the
installation on page 6 pp. of this
instruction manual). After a few
seconds, a successful connection
will be displayed in the status
display. If there is no established
connection after 10 secs, please
restart the software with the
GoldScreenCard plugged in.
12 | Instructions Goldscreencard
9. Performing the measurement
Before your measuring series,
please perform a calibration of the
card.
Via the menu GERÄT > Kalibrie
rung..., a message will appear that
asks you to push the "test" button
as long as it takes to finish the
calibration. This only takes a few
seconds.
Choose the coin you want to
measure (in this example a "1
ounce Krügerrand coin") in the
library. First, choose the coin
material with a double click (in this
example "Gold"). To get to the
different sizes of each coin (e.g. 1
ounce or 1/10 ounce), please
doubleclick on the coin's name. In
the coin information field, you will
get information about the chosen
coin which allows you to examine
the geometry and weight.
Put the coin you want to measure
on the sensor field. Lay the coin
on the device, ideally in the way
indicated in the coin information
section. Hold down the "test"
button for some seconds.
1
2
3
4

The measurement result is represented in the diagram by a
continuous blue line. When the measurement value lies inside the
green measurement range cloud (for the coin chosen by you (!)),
the coin in question corresponds to the set range. This is shown in
the status display (2) by the message "signal inside range" with the
green background. Additionally, this display also shows the
measurement value (see "Interpretation of the measurement
results").
Instructions Goldscreencard | 13
5
6In case of a forged coin (in this example a perfectly falsified
Krügerrand coin with tungstencopper core), the message "signal
outside range" appears with a red background. This is an indicator
for a forger coin, but please always keep the chapter "interpretation
of the measurement results" in mind, as other factors may
sometimes influence the results (e.g. bent coins).
7The measurement result can be
saved as an image with Datei >
Speichern... als.

The GoldScreenCard uses the electric conductivity of the
testing object as a physical measurement size. The
testing sample's geometry plays a decisive role because
the air gaps between the sensor and coin surface caused
by the striking contribute significantly to the measurement
result. An air gap doesn't conduct electricity and therefore
causes an other result as a filled surface.
This is why the GoldScreen software does not only
display the electric conductivity, but also a value
describing the striking and geometry of the coin and its
electric conductivity. This is represented by the gradation
of the diagram (about 01000; negative values for
ferromagnetic material). This result in the virtual unity
"Goldtics", which is referred to at some points of this
manual. This also can be seen as an additional safety
because the striking is recorded in the value range as a
safety feature.
Nonetheless, it can be said to simplify: the worse a coin's
conductivity, the less is its measured value in case of
same geometry. Smaller coins that either don't cover the
sensor surface completely (small circle in the sensor field)
or are thinner than the pervasion depth of the eddy
current field cause a significantly lower absolute
measurement values. The small coins behave to each
other analogously to the 1 ounce coins. Bent or strongly
worn out coins for instance also cause significant value
changes.
Because of the very high permeability of ferromagnetic
material like iron / steel or nickel, you will in this case get
a negative value. Magnetic material can therefore be
recognized as such in an instance.
14 | Instructions Goldscreencard
10. Interpretation of the measurement results

The following illustration shows an overview of value
ranges of 1 ounce coins. Due to the significantly worse
conductivity of tungsten compared to pure gold, gilded
forgings of tungsten cores are situated significantly below
this range. Because of the better conductivity compared
to gold alloys, tungsten coins are situated over the value
range of alloyed gold coins, like e.g. Krügerrand coins.
Instructions Goldscreencard | 15

When choosing the value range of a coin, the software's
visual display doesn't show individual lines, but a bigger
value range.
The breadth of the "range cloud" has been defined that
way in order to be able to represent small variances of the
measurement (e.g. coin not exactly in the middle) or little
deviations of the testing object's geometry (coin edges
can be worn out by usage) inside the value range.
A measured value that is not exactly in the middle of the
range cloud is therefore per se no reason to be worried.
Not until the measured value is significantly out of the
value range, i.e. the status display shows the red
message "signal outside range", the measured value
doesn't correspond anymore to the stored set value and it
is possible that the object is fake. Sort this coin out and
test it with other methods as well.
In general, you can measure coins through its blister or
plastic film, but the bigger distance between the coin and
the sensor surface reduces the measured value and the
stored reference values from the GABib can't be used
because values can differ a lot whether they have a
plastic film or not.
When creating your own UserBib, you can store the
reference value with the plastic film. So you can also
compare the testing object, under the condiction that they
have the same casing.
16 | Instructions Goldscreencard

Further important questions around the
measurement interpretation
What shall I do if the result is unexpectedly right or
wrong?
In exceptional cases, it can happen that a real coin is
displayed as wrong. The reason can for example be that
the coin has a strong deformation, so please try to find
deformations or damages.
If a coin that has been thought to be real shows values
out of the value range and is therefore declared "fake", it
is necessary to work with indestructive techniques and to
have the coin tested about its real gold content in a
refinery.
If a suspected forging is declared "real" by the software,
the geomatry / the weight of the coin should differ
significantly from its real counterpart. You can't exclude
for sure that the forgers work with trick that allow them to
fake the conductivity of a real coin.
Until now (12.11.2014), we haven't seen such forgings,
but you can't exclude with a certainty of 100% that there
are such pieces. If you have unexpected results, you can
turn directly to us.
Is it possible to use to get the result "fake" for a real coin?
In order to have a sure measurement result, it is
necessary to compare the tested coin with a reference
value from the value library. If the coin isn't strongly worn
out, the result "fake" is unlikely.
Instructions Goldscreencard | 17

Is it possible to use the GoldScreenCard for ingots or
jewellery?
In general, it is also possible to test small ingots with the
GoldScreenCard, but it is difficult to have reference
values, due to the many different geometries of the
different ingot producers. The value library will be updated
soon regarding this circumstance. These new values can
be read easily via the import function of the software in
the value library. Unfortunately, it is impossible to test
jewellery because of its deffering geometry.
18 | Instructions Goldscreencard
11. Performing the measurement on the way
The GoldScreenCard can be used on the way, even
without any connection to a PC. However, the functions
are limited to "true / false" (original / fake) messages per
LEDdisplay (green / red) directly on the device. The
GoldScreen software allows saving two different value
ranges directly on the GoldScreenCard. The actual
performance of a measurement on the way is described
as follows...
Choose the needed data
from one of the two libraries
(GABib or your selfmade
UserBib).
1

Instructions Goldscreencard | 19
Transfer the value range for
your chosen coin to the
device via Gerät > Eingabe
Messwert A. After succesful
transmission, a popup
window with the trans
mission confirmation will
appear. Analogously, you
can store a measurement
value B, i.e. a second coin.
2
When the GoldScreenCard
is separated from the
computer and connected to
the accumulator pack, both
of the LEDs (original / fake)
are activated. Now, the
GoldScreenCard can be
used on the way.
3
The standard configuration
has the value range A, i.e.
the first stored coin value
from step two ("Eingabe
Messwert A") activated. In
our example, that would be
the Krügerrand 1 ounce
(see image to step 1). If you
want to measure with that,
push the "test"button (max.
5s) and the result flashes in
form of the corresponding
LED (original or fake).
4
If you want to measure the
second coin, i.e. "Eingabe
Messwert B", hold down the
"test" button for about 8 s
until the "B"LED glows
orange and the "A"LED
goes out.
5

The userlibrary function allows you to store
measurement values of own coins, that are not in the
Goldanalytix value library, in your own user library just by
simply adding them.
When clicking on Bibliothek > Wert hinzufügen, a
dialogue window will open to tell you to hold down the
"test" button for some seconds. The coin to be recorded
has to lie in the centre of the sensor surface.
After the measurement has finished, an information
window will open that should be filled in analogously to
the structure of the Goldanalytix value library, in order to
obtain a better overview with the same "folder structure".
The new value then is automatically saved in the User
library and can be opened via Bibliothek > UserBib. The
function Bibliothek >Einzelwert löschen User Bib... allows
the user to remove individual values from the Userlibrary.
20 | Instructions Goldscreencard
12. Creating an own value library
13. Updating the GA value library
The Goldanalytix library contains from the start the value
ranges of the most current silver and goldbullion coins.
In order to cover the highest possible amount of coin
types, the library is continously extended by Goldanalytix.
Each current library can be downloaded from the
Goldanalytix homepage (www.goldanalytix.de\GABib_
download) and stored in the software.
Downloading the file from the homepage works like every
standard file download and can be saved for example on
the desktop. Choosing the function "Bibliothek" > "aktuelle
GaBib importieren" will start a dialogue window that you
would answer with Yes. Then choose the saved data from
the opening file explorer. The GABib is then updated.