The “AMTEK” range of Acoustomagnetic EAS Systems is fully compatible with all
58 kHz tags and Acustomagnetic labels on the market. The systems are designed to get
optimum detection performance and to avoid false alarms at the same time, by using
digital signal processing and anti-noise algorithm.
The AMTEK Pro-Line antennas with AMPRO V 7.4 electronics can be operated as
“Mono” or “TX” antenna (setting via infoNet V5 onwards)
1.) Single Mono antenna
2.) Multi Mono antennas
3.) Dual system 1 Processor TX and 1 Receiver antenna
4.) Split system 1 Processor TX and 2 Receiver antennas
Working principle “Mono”: A 58 kHz pulsed magnetic field is generated by the
Processor antenna. The Processor antenna is using the same loops for transmitting the
58KHz TX pulses and for receiving the tag/label signal. Any 58 kHz AM label or hard tag
brought into the magnetic field will generate a signal which can be detected in the receiver
mode and subsequently trigger an alarm signal.
Working principle “TX”: A 58 kHz pulsed magnetic field is generated between the
Transmitter (TX) antenna and one or two Receiver (RX) antennas. Any 58 kHz AM label
or hard tag brought into the magnetic field will generate a signal which can be detected
by the Receiver antennas and subsequently trigger an alarm signal.
Typical System Performance
Depending on the AM tags used and the installation environment, the detection distance
can vary. The following table gives an overview of typical detection ranges with the
different AMTEK systems and security elements.
1.2. Additional Features
All Version AMTEK V7.4 Processor antennas are equipped with 2 additional alarms that
allow an easier handling of certain situations.
The Jammer alarm indicated that the system is compromised by a jammer signal.
The alarm light and buzzer sequence for Jammer alarm can be set via InfoNet software.
In this case the detection of the system is disabled to avoid false alarm.
The Near Tag alarm is triggered by a continuous detection of a stationary security
element in the detection zone. The alarm light and buzzer sequence for Jammer alarm
can be set via InfoNet software. By enabling the Near Tag alarm, one can easily detect
tags that have accidentally been placed inside the system’s detection area.
Both of the above described alarm features can easily be enabled/disabled by activating
the respective checkbox inside the InfoNet software.
Programmable on/off time:
The system can be automatically switched on/off at certain times. The time for ON and
OFF can be set via the InfoNet software. The system will consume much less power during
OFF time (Energy saving)
Incoming/outgoing alarm (only with integrated visitor counter):
The system is able to distinguish between incoming and outgoing alarm if equipped with
the optional integrated visitor counter. The alarm indication is different for the two types
of alarms allowing easy identification of incoming and outgoing alarm.
Firmware update:
If a new firmware becomes available, the processor’s firmware can be updated via the
InfoNet software allowing update of new system features without replacing the
electronics.
Selection of light/sound sequence:
The system alarm light and sound can be programmed in different sequences. Different
aisle could have different sound sequence enabling the identification of where the alarm
came from. It is also possible to have the alarm light on longer than the alarm sound to
easily identify the alarm position. For multi aisle installation this feature is especially
useful.
Remote Tuning/Service/Monitoring
In order to reduce the need for service calls, especially for remote places, our PROLINE systems can be accessed via Internet. The system service provider can log-in
from their office into the system via infoNetCloud (provided they are authorized) and
diagnose/solve potential problems.
Integrated bidirectional visitor counter
Possibility to count customers per aisle and to determine the direction of
movement (in or out of the shop)
Showing the importance of the alarm (is a customer moving in or out during the
alarm)
Detecting undefined alarms
Pinpoint the exact aisle where the alarm occurred
Generate reports on visitor counts and alarm counts
Please note that the Version 7.4 processor board hardware can come with
different Firmware Versions. Please check the label on the processor if you are
not aware of your board’s firmware version.
2. AMTEK SYSTEM
2.1. Component Overview
The standard Mono system comprises the following components:
a.) Processor Board AMPRO 700V7.4
b.) Power Supply AMPSS 700V6 or higher
c.) Antenna AMTEK 150/250/350/450 or AMTEK 750
d.) Computer Cable LAN Cable AMCOM 710
e.) infoNet Software infoNet V5.0 or higher
2.1.1 Specifications:
Transmitter Operating Frequency 58 kHz (±200Hz)
Transmit Burst Duration 1.5ms or 1.6ms (can be set in InfoNet)
Max. Transmit Current 16A peak
Transmitter Coil Resistance 2 ohm (±5%)
Burst Repetition Rate 50Hz (60Hz)
Receiver Center Frequency 58 kHz
Alarm Audio level 97dBA
Environmental Ambient Temperature 0°C to 50°C
Relative Humidity 0 to 90% (Non-condensing)
The picture below shows a top view of the Processor board. Table 2.2 lists the board’s
relevant connectors and tuning components together with their functions.
H11 LAN port ready LED ON
H12 if LAN 2 is connected LED ON
H13 If LAN 1 is connected LED ON
H14 If the board has Internet access LED ON
H15 If sync pulse from power supply/ hardware sync LED blinking
H16 If the board is set as Master LED ON. If Salve LED OFF
H17 LAN ok LED blinking
H18 LAN ok LED ON
Power LEDs
H19 12VDC power LED ON
H20 5VDC power LED ON
H21 3.3VDC power LED ON
All our antennas are pre-tuned in the factory and RX antenna matching WILL NOT
HAVE TO BE ADJUSTED in almost any case. When installing the system near
metallic frames or metallic doors, resonance value may be affected.
X5 –Buzzer
connector
R28–Buzzer Vol.
2.3. Receiver Board AMRB 700V5.3
Picture 2.3 below shows the RX board and the relevant components:
Each RX board controls the resonance of two loops in the RX antenna. The matching for
the upper and lower receiver loop can be adjusted through the 2 rotary switchesTW1 and
TW2. TW1 adjusts the matching for the upper loop and TW2 adjusts the matching of the
lower loop.
In this case, the RX matching can be modified for the upper and lower loop using the
rotary switches TW1 and TW2.
The AM Pro-line V5 Receiver board allows the connection of a two color LED top-light.
GND
+12V
LED1 (ON-LED, active low)
LED2 (Alarm, active low)
Maximum current for LED1 and LED 2 is 200mA
2.4. RX-TX-Connection Cable AMCTR 710
The AMCTR 700 connection cable is supplied together with
the RX antenna. It connects the receiver board with the
processor board of the TX pedestal. Connect one end of the
cable to the RX board (X6) and the other end to the TX board
(RC1 or RC2).
To avoid noise capturing, the connection between the RX
and TX antenna should be as short as possible.
The Dual power supply AMPSS700V6 is used for all our AM systems using V4, V6 or
V7 processor boards. It provides the power and the Synchronization signal to the
system electronics for maximum 2 TX antennas.
If any LED lights “red” means the respective voltage is missing
To operate the power supply, connect the power
supply via the main power cable to a 220V (110V)
power outlet and switch on the main switch SM.
Make sure the “Earth” of the power plug is connected
to the power socket.
The AMPSS700V6 has 2 system power outlets (X1 and X2)
The output cable of the power supply is connected to the processor board through
1 x 3 pin and 1 x 2 pin connectors.
If the connector needs to be removed for some reason, the color code of the cables
must be observed. To avoid damages to the power supply and to the system electronics
replace the fuse with the same kind of fuse if necessary.
If any fuse needs to be changed always unplug the power supply
from the AC source first.
Always connect the power supply to the system first before switching on
the power supply.
Always switch off the power supply first before disconnecting the power
supply to the system.
Local laws and regulations must be respected when installing and
servicing this device
Please note that the power supply cable between the power supply and the
processor board should not exceed 15 meter.
The AMPSS 700V6 was designed to power our new AM antenna generation
whit AWG 20 antenna wires which require reduced loop voltage.
Operating the TX antenna with a higher voltage (> 50VDC) may result in higher
matching voltage which can damage the board.
2.6.2 Multiple Mono Antennas (AMPRO 700V7.4 configured as “Mono”)
The AM power supply V6 allows the connection of up to two AM Processor antennas.
Hardware synchronization might be necessary, if 2 or more AM Processor antennas are
2.6.3 Single TX Antenna ((AMPRO 700V7.4 configured as “TX” Dual system)
One processor board (TX) can drive one or two RX antenna(s), thus resulting in two
configuration modes: “Dual and Split system. The following gives a schematic overview
about the necessary components and connections for both configurations.
This chapter covers the various issues related to Acoustic Magnetic systems and
Electronic Article Surveillance systems in general, like:
Noise sources
Installation guidelines
3.1. Noise sources
Below there are various noise sources listed that might affect the performance of any
EAS system. It is strongly recommended to either eliminate these noise sources (as far
as possible) or maintain the largest possible distance to these noise sources.
The following devices can create or absorb AM noise signals which can reduce the
performance of an EAS system:
AM systems installed in other shops (even if they are installed up to 100m or
more away from your store).
Any electronic device that operates around 58kHz or produces harmonic
frequencies around 58kHz.
An active laptop. The back light in the screen can create a lot of noise which is
detected by the EAS system and can reduce the performance dramatically. Make
sure to keep laptop computers at least 3 meters away from the antennas.
(Moving) Objects containing metal, like sliding and revolving doors, elevators,
Vertically positioned power cables, both low voltage and high voltage.
Lights (flashing, fluorescent, halogen, gas-de-charge, etc.)
Metal scan systems installed in close vicinity.
Make sure all parts have arrived. Make sure there are no damaged parts. If there
is any damaged part, notify the transport company.
Installation shall be performed by a qualified installer with all necessary
national/local electrical/fire codes training.
If possible, connect the Processor / RX antenna and put them in the required
position in the entrance/exit without drilling holes in the floor and bolting the
antennas down. Switch on the system and test the performance. In this way the
noise level and system sensitivity can be determined and if necessary (in case of
high noise or poor sensitivity) the system can be moved to find a better position
The pedestals shall be placed at a distance equal to or smaller than the maximum
value depending on the kind of tag.
Avoid placing the Processor / RX pedestals near metallic structures (doors, frames,
etc...) or neon/discharge lamps.
Always install the TX antenna on that side where the highest noise is or where
the highest noise can be expected.
Metal framed doors may never swing between the EAS antennas, as this will
distort the energy field of the system in such a way that it might result in high
noise, poor detection and potential false alarms
Not connected RX antennas nearby a running system are to be avoided. They act
as a big hard tag.
Avoid unnecessary long cables. Run the power supply cables in a direct line to
the EAS antennas. Never run power supply cables vertically up the wall within
one meter distance of the antennas (never around the entrance/exit doorframe).
The AC source should be a clean AC source. If possible do not share the AC
source with computers, neon lights/discharge lamps, or equipment with switching
power supplies, make sure the “Earth” of the power supply plug is connected to
the power supply socket.
Blown fuses shall be replaced with fuses of the same kind.
ALWAYS UNPLUG power supply BEFORE CHANGING blown fuses!
Electronics will now be visible. Confirm all connections are firmly in place.
Place Processor / RX pedestal in the place to be installed.
Consider the position of AC 230V/50Hz power source. Ensure that 230V 50Hz AC
source can be connected with the Power Supply and that the Power Supply output
cable can be connected with the Processor pedestal.
It is strongly recommended to tune the system to its final working conditions
BEFORE drilling any hole!
Avoid placing the Processor pedestal very near metallic structures (doors, frames,
etc...) or neon/discharge lamps and LED, LCD monitors.
In case of Dual or Split system connect RX pedestal(s) to Processor TX
pedestal using the connection cable AMCTR 710
Confirm all connections to the loops, and processor board are firmly in place.
Before turning the Processor antenna (TX or Mono) on, remove all 58 kHz
tags near to it.
Connect Power Supply to the Processor board with the 2-pin and 3-pin
connectors
Connect Power Supply to AC 230V/50Hz source, switch on the power supply.
Connect the computer via the LAN cable and start
InfoNet V5 software (for tuning please refer to the InfoNet manual)
All our antennas are pre-tuned in the factory and the TX Antenna matching WILL NOT
HAVE TO BE ADJUSTED manually in almost any case. When installing the system
near metallic frames or metallic doors (which is not recommended), the resonance
value may be affected and manual matching is required.
4. TUNING OF THE MATCHING CIRCUITS
4.1. Processor Antenna Matching
The LED bars TX1 and TX2 should light up completely when the
system is powered on.
If the LEDs do not light up at all, then check:
Whether “TX OFF function ” is activated by the respective checkbox inside the
infoNet Software (see infoNet Manual for further details).
De-Activate the TX OFF function if not done yet.
Switch off the power first before you change any jumpers!
Wait a while for the capacitors to discharge! High voltage!
Function
Relevant jumpers
Associated LED bar
Matching of the upper loop
J1 to J6
TX1
Matching of the lower loop
J7 to J12
TX2
Increasing
quality of
matching
TX1
TX2
If the LED bars do not light up completely on one or both sides, then:
It is necessary to adjust the matching of the antenna loops. The AMPRO 700V7.5
processor board is designed to be used for all AMTEK systems. Since every
AMTEK system shows slightly different antenna characteristics, the board allows
the selection of different capacitors for each antenna loop by inserting the
respective jumpers. The matching capacitors are located at the upper part of the
board.
The matching Level is shown by the LED bars TX1 and TX2:
If the antenna is mismatched, not all of the 5 LEDs of LED bars TX1 and TX2 will light up.
In that case, the TX resonance of the upper and lower loop can be modified by
changing the matching capacitance through the 6 jumpers in the relevant matching
circuits (refer to default setting below).
Please check the value of the capacitors when exchanging the board as some systems
with older boards may have different capacitor values.
All our antennas are pre-matched. If changing the matching is required,
ensure that the matching voltage does not exceed 1,200V (GND to Peak).
To measure the voltage the antenna loops need to be connected.
The infoNet V5 will show if the matching results in too high Voltage.
Default setting of TW2 and TW1r different AMTEK systems
AMTEK…
TW2
TW1
250, 200 4 4
350
1
1
750
0
0
All our antennas are pre-tuned in the factory and RX antenna matching WILL NOT
HAVE TO BE ADJUSTED in almost any case. When installing the system near
metallic frames or metallic doors, resonance value may be affected.
TW2
TW1
CS1
X6
4.3. RX Matching Circuit
The amplitude of the received RX signals is highly correlated to the matching of the RX
board. Hence, when tuning the RX board’s matching circuit, the signals displayed in the
infoNet Software are important for the optimal tuning.
RX Matching:
Set S3 and S4 to the default values according to your system:
Depending on the tolerance of the system components and environment, the
default value might not be suited for optimum performance.
If you have to tune the inductor CS1 please do it carefully with a non-metal screw
driver, otherwise you might damage the ferrite core.
For detailed description of the RX tuning refer to the infoNet Manual.
The AMTEK AM systems operate on the pulse-listening principle. Using the zero
crossing of the 50Hz mains frequency as a trigger, a short TX pulse of 58kHz signal is
transmitted and a receiver window is ‘opened’ after the TX pulse has stopped.
If a tag was present within detection range during the TX pulse, the resonance of this
tag will be detected in the Signal (Receiver) window and an alarm will be triggered.
A noise reference window is opened to detect the environmental noise. This signal is
compared with the signal received in the Signal window and allows the software to
properly distinguish a tag signal from a noise signal.
The figure below shows the AM operating principle (at 50Hz, with a default delay of
10μs) during one 50Hz cycle
TX Pulse
TX Pulse 1.6ms or 1.5ms (setting via InfoNet)
LS1 Signal window 1400μsLS2 Reference window 1400μsDEL Detect delay 100μs
The LS2 can be shifted individually via infoNet V5 or higher
When multiple AM systems are installed in each other’s vicinity, it’s very important to
properly synchronize the TX pulses and receiver windows for all systems involved. If
systems are not properly synchronized they will create false alarms and poor detection.
Keep in mind that AM signals, when compared to other EAS technologies, can “travel”
quite far (up to 100m or more) because of their longer wavelength.
Two AM systems that are properly synchronized
If two or more AMTEK Processor antenna are connected to the same main power
phase they would not need to be synchronized by either hardware or software.
Two AM Processor antennas that are NOT synchronized
The TX pulse of system 2 starts later than the TX pulse of system 1, resulting in the fact
that system 1 is receiving the TX pulse of system 2 in its receiver window. This might
create false alarms and poor detection on system 1, whereas system 2 will function
properly as the TX pulse of system 1 is not affecting the receiver window of system 2.
This problem can be solved by making sure that both systems transmit and receive at
the same moment, which can be realized by changing the “Syncron” value time for one
of the two systems using InfoNet software.
Please note that any TX pulse should also not fall into to the Reference window LS 2 as
it would push up the noise level of the system dramatically. The system may not alarm
but the performance will be affected.
5.3. Hardware Synchronization (No HW Sync for V 7.4)
Synchronization can be done via software or hardware. The necessary settings for
hardware synchronization are described below. A description of the software-based
synchronization is included in the infoNet Manual.
Hardware synchronization allows a number of AMTEK Processor antennas to be
synchronized with another AM system/Processor antenna nearby by synchronizing only
the AMTEK “Master antenna”. The “Slave antennas” will automatically follow the
“Master” synchronization.
The LAN ports (LAN1 and LAN2) can be used for connection to the shop LAN and at the
same time for hardware synchronization.
1.) One Processor board has to be set as Master and the other(s) as Slave.
2.) The hardware synchronization ports (LAN 1 or LAN 2) must be connected with a
shielded LAN cable.
The picture below illustrates the connection and the necessary settings for Master or
Slave operation.
When using hardware synchronization, you must set the synchron value to 0 for
all “Slave Processor” boards by means of the infoNet software (see
infoNetManual). Shifting the Synchron value for the master Processor will
automatically shift the Synchron value of all connected slave antennas.
1 2 3
J15
Master
Slave
J17 & 18
Sync Bus Termination
All other slaves
Both end of the
sync cable (bus)
One “Master” can drive several “Slaves”. In order to proper
terminate the Master/Slave Sync bus-cable, the Jumper
J17 or 18 has to be inserted at the beginning of the sync
bus-cable (usually Master antenna) and the end of the buscable (last Slave board).
To set to Master mode (the default mode), put the jumper
J15 in position 2 and 3. For the antenna to operate in Slave
mode put the jumper in position 1 and 2.
Please do not turn on the power before the configuration is ready. First switch on
the power supply for the “Slave” antenna and then the power supply to the
“Master” antenna.
One master can drive several slaves. The way of connection is illustrated below.
Please note the sync cable (bus) has to be terminated to avoid interference.
As such the first board of the sync bus, usually the Master board and the last Slave on
the bus have to be terminated by inserting Jumper J17.
Master Slave 1 Other Slaves Last Slave
Installation of 5 Processor Antennas
The new Dual power supply AMPSS 700V6 50VDC allows the connection of two
Processor antennas.
The Pro-Line Processor board V7.4 can be connected directly to the shop LAN via a
standard LAN cable. Usually no setting of the shop router is required.
If the board is connected to the LAN, the following features will be available
via infoNetCloud
a.) Remote service
b.) Remote monitoring
c.) Visitor counter analysis (if equipped with integrated visitor counter module)
For more set-up information please refer to the infoNet V5 software manual
This equipment complies with European Community regulatory rules for Radio
Frequency emissions. It has been awarded with the CE mark.
The CE mark is the official marking required by the European Community for all Electric
and Electronic equipment that will be sold or put into service for the first time, anywhere
in the European community. It proves to the buyer and user that this product meets all
essential safety and environmental requirements as they are defined in the “European