Technical Manual AM Systems
Technical Manual AM Systems Table of contents Technical Manual AM Systems .................................................................................................. 1 1 Terms and abbreviations ...................................................................................................... 5 2 Introduction ........................................................................................................................... 6 3 4 5 2.1 Available AM systems .........................
Technical Manual AM Systems 6.9 Antenna wiring ............................................................................................................. 24 6.10 The AM Transceiver (TRX) ......................................................................................... 25 6.10.1 AM Transceiver Printed Circuit Board ........................................................... 26 6.10.2 Transceiver - receiver cable connections ...................................................... 30 6.10.
Technical Manual AM Systems 8.11 Perspective view.......................................................................................................... 70 8.12 Counting view .............................................................................................................. 70 8.13 Entrance view .............................................................................................................. 71 8.14 Toggle view direction ...........................................................
Technical Manual AM Systems 1 Terms and abbreviations This chapter describes the terms and abbreviations used in this document. Term Abbreviation Explanation (Hard) Tag Tag Passive component, equipped with a lock to allow attachment to garments, which can be detected by the receiver. (Paper) Label Label Passive component, usually equipped with glue on one side to allow attaching the label to any object, which can be detected by the receiver.
Technical Manual AM Systems 2 Introduction The products mentioned in this manual are Electronic Article Surveillance (EAS) systems based on Acoustic Magnetic (AM) technology operating at 58 kHz. They are manufactured by Cross Point B.V. Waanderweg 12 7812 HZ Emmen The Netherlands +31 (0)591 668866 www.crosspoint.nl 2.
Technical Manual AM Systems Some of the extra functionality is listed below.
Technical Manual AM Systems 2.4 Restrictions and limitations The following restrictions and limitations must be considered: 2.4.1 AM systems versus RF systems It is not allowed to connect AM systems together with RF systems to the same Field Bus! Pins 3 and 6 on BUS A and BUS B of the AM transceiver and receiver boards are not interconnected. They are used for communication between the AM transceiver and the AM receiver.
Technical Manual AM Systems 3 General AM and EAS issues This chapter covers the various issues related to Acoustic Magnetic systems and Electronic Article Surveillance systems in general, like: 3.1 x Noise sources x Installation guidelines Noise sources Listed below are various noise sources that might affect the performance of any EAS system. It is strongly advised to either eliminate these noise sources (as far as possible) or maintain the largest possible distance to these noise sources.
Technical Manual AM Systems 4. Install the power supply for the EAS system at least 1m away from the antennas. If the power supply needs to be installed further away from the system make sure to extend the secondary power cable using a proper cable with the same 2 dimensions (3 x 1mm ) and specifications as the original cable (preferably the exact same cable). Extending the power cable with a cable with different dimensions and specifications might result in less performance of the AM system. 5.
Technical Manual AM Systems 4 Equipment and tools The following equipment and tools are advised to use when installing and tuning the AM system. 4.1 General installation tools The general tools required for installation of an EAS system (drills, screwdrivers, cutters, etc.) are not described in detail. 4.2 Laptop computer To properly adjust the AM system through Cross Point’s software, it is strongly recommended to use a laptop computer.
Technical Manual AM Systems 5 AM operating principle The AM system operates on the pulse-listening principle. Using the zero crossing of the 50Hz mains frequency as a trigger, a short burst of 58kHz signal is transmitted and a receiver window is ‘opened’ after the transmission burst has stopped. If a tag was present within detection range during the transmission burst, the resonance of this tag will be detected in the receiver window and an alarm will be triggered.
Technical Manual AM Systems 5.1 Synchronization principle When multiple AM systems are installed in each other’s vicinity, it’s very important to properly synchronize the transmission burst 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.
Technical Manual AM Systems Reference window Receiver window Transmission burst System A 50Hz mode Reference window Receiver window Transmission burst 0ms 20ms System B Figure 3: Correcting the delay time of system B Figure 4 shows two AM systems that are properly synchronized.
Technical Manual AM Systems 6 Connections In the following chapters the connections between the TRX board, RX board and Controller are described. Furthermore the Printed Circuit Boards (PCB) and the manual adjustments are explained. 6.1 “A” and “B” side of the antenna The antenna has a front side (A) and a back side (B). These sides are indicated on the visitor counter in the top/middle of the antenna. The A-side is the side on which the electronic boards can be accessed.
Technical Manual AM Systems 6.2 How to access the electronic boards In order to be able to access the electronic board, the top of the antenna needs to be removed as well as the Plexiglas plate(s) and the metal front cover. Follow the next procedure carefully to do this. 1. Put your left hand on top of the top part 2. Put your right hand around the antenna frame on the right side of the antenna 1 2 3.
Technical Manual AM Systems 6.3 Field Bus connections The TRX and RX antennas are interconnected through the Field Bus by using preferably FTP cables, because FTP has an advantage to eliminate noise because of the extra shielding. The Cross Point Field Bus requires the devices to be connected in a “daisy chain” connection. A “star” network is not allowed and will result in poor communication between the devices and the host computer or controller! Each device (TRX PCB and RX PCB) has a unique address.
Technical Manual AM Systems 6.4 Field Bus termination For the Field Bus to operate properly the bus needs to be terminated on the first device and the last device in the bus. When an antenna is either the first or the last device in the Field Bus, then the bus needs to be terminated on that device. In the example in Figure 7 the bus needs to be terminated on the Access Point (which is automatically done by the Access Point itself) and on RX2.
Technical Manual AM Systems 6.5 Power supply unit AM systems The next sections contain information on power supply for AM systems. Please read the supplied information carefully prior to connecting the power supply, as it contains important information on proper usage of the power supply unit. Output cable + GND sync External fuse Mains input ON/OFF switch TRX board connector Figure 8: AM power supply unit Table 1 shows the color schemes for the output cable.
Technical Manual AM Systems 6.6 Power supply specifications Table 2 shows the specifications of the AM Power Supply. Technical specifications Dimensions (L x W x H) 227 x 108 x 71 mm Weight 2.1 kg Input voltage, frequency & current 230VAC 50-60Hz 500mA or 115VAC 50-60Hz 1A Mains inlet type Fused AC IEC with ON/OFF switch Mains lead Euro Schuko to IEC, 1.5m length Output 32.5VDC 1.6A + synchronization signal Output cable 3x1mm , fixed, 5m length.
Technical Manual AM Systems x Leave at least 10cm of free space around the PSU for ventilation purposes x Allow for free air flow around the PSU x Local laws and regulations must be respected when installing and servicing this device x Minimum distance between PSU and AM system is 1m. It is prohibited to connect more than one TRX to a power supply.
Technical Manual AM Systems RX TRX PSU Power supply through Field Bus Figure 10: Power supply connection: Dual antenna system 6.8.3 Power supply for a triple system In a triple antenna system setup (1 TRX and 2 RX), a power supply must be connected to each individual TRX antenna. It is not possible to connect more than one TRX to one power supply.
Technical Manual AM Systems 6.8.4 Power supply for large system setup Figure 12 shows an example for 5 antenna power supply. Each additional TRX antenna has to be powered with a separate power supply. RX1 TRX1 Power supply through FTP RX2 Power supply through FTP PSU TRX2 Power supply through FTP RX3 Power supply through FTP PSU Figure 12: Power supply connections for more than 3 antennas Connections v4.
Technical Manual AM Systems 6.9 Antenna wiring The AM TRX and RX antennas are configured with two identical antenna coil assemblies, one in the top and the second in the bottom of the antenna. Each coil assembly consists of two multi-turn coils (red wire and black wire in the top, green wire and white wire in the bottom).
Technical Manual AM Systems 6.
Technical Manual AM Systems 6.10.1 AM Transceiver Printed Circuit Board Figure 14 shows the TRX PCB and its available components. TUNE BOT2 TUNE BOT1 ANT TOP2 ANT BOT2 ANT BOT1 TUNE TOP2 TUNE TOP33 TUNE BOT3 ANT TOP1 TUNE TOP1 BUZZER TAMPER GND 12 ON MINI SD CARD S1 BUS A D8 RESET POWER I/O1 I/O’s I/O2 B3 TERM BUS B1 RELAY B2 BAT 4 3 GND 2 1 REL1 LEDs + 4 3 GND 2 1 BUS A1 VIS COUNT BUS B SPEAKER Figure 14: The AM TRX Printed Circuit Board Connections v4.
Technical Manual AM Systems 6.10.1.1 TRX PCB Components Table 3 shows the AM TRX components and a description of their function. Connections Component Function ANT BOT1 Bottom transmitter/receiver antenna loop ANT BOT2 Bottom signal suppression loop ANT TOP1 Top transmitter/receiver antenna loop ANT TOP2 Top signal suppression loop B2 Push button B3 Push button BAT Backup battery for internal clock. BL1 LED indicator.
Technical Manual AM Systems MINI SD CARD Mini SD card slot. An SD card containing special audio notification messages can be inserted. For future use. POWER External power supply input connector. REL1 The actual relay. RELAY The external connection for relay REL1. Normally Open (NO), Common (COM) and Normally Closed (NC) potential free contacts are available to connect external devices like camera’s, buzzers, etc. Relay max. rating: 30VDC/1A RESET Reset button.
Technical Manual AM Systems VIS COUNT Visitor counter connector. Connect the wire to the visitor counter to this connector. Table 3: The AM TRX components Connections v4.
Technical Manual AM Systems 6.10.2 Transceiver - receiver cable connections When an AM receiver is combined with an AM transceiver, the receiver must be connected to the transceiver with the receiver cable. Figure 15 shows the transceiver to receiver cable connections.
Technical Manual AM Systems 6.10.3 I/O connections The AM TRX board is equipped with two I/O’s which can be used for connecting a pushbutton (Forced Alarm option) or as output for other external devices (e.g. camera). To avoid interference, caused by the wires which will be connected to any of the I/O’s, it is very important to only connect the wires to the I/O connector contacts.
Technical Manual AM Systems 6.11 The AM Receiver (RX) The AM Receiver can be connected to the AM Transceiver to enhance the detection range. All information and events are stored on the transceiver, not on the receiver board itself. 6.11.1 AM Receiver Printed Circuit Board Figure 17 shows the RX PCB and its available components. ANT BOT BUS B1 ANT TOP BUS A1 BAT VIS COUNT RESET D7 D8 POWER BUS A BUS B TAMPER TERM Figure 17: The AM RX Printed Circuit Board 6.11.1.
Technical Manual AM Systems BUS A Field Bus A connector for RJ45 connection. Allows the board to be connected in the Field Bus structure. BUS A1 Analogue connection to the transceiver. BUS B Field Bus B connector for RJ45 connection. Allows the board to be connected in the Field Bus structure. BUS B1 Analogue connection to the transceiver. D7 Red LED. ON (blinking) when the receiver is in bootloader mode (e.g., during firmware upload). OFF during normal operation. D8 Green LED.
Technical Manual AM Systems 6.12 The visitor counter The AM models can be equipped with a visitor counter. This counter allows counting of visitors as well as determining the movement direction of a person who generated an alarm. Both TRX and RX antennas can therefore be equipped with a visitor counter PCB. The TRX antenna holds the RX visitor counter PCB (IR-RX) and the RX antenna holds the TX visitor counter PCB (IR-TX). Figure 18 shows the visitor counter principle.
Technical Manual AM Systems 6.13 Various connections For proper operation of the AM system, it is very important to interconnect the transceivers and receivers in the correct way. This chapter shows and explains these various connections. 6.13.1 Single antenna system (no aisle) The AM system can be used as a single antenna system (mono). When no receivers are connected to the transceiver, the transceiver will automatically function as a mono antenna system. Visitor counting is not possible.
Technical Manual AM Systems 6.13.2 Dual antenna system (single aisle) In case receivers are connected to the transceiver it is of great importance to connect the FTP and analogue connection cables to the proper connectors on the TRX and RX boards. Figure 21 shows the connections for a dual system (TRX + RX). RX TRX Side A Aisle 1 Back field control BUS A1 BUS A Receiver cable FTP X N back No fie field eld control BUS B1 BUS B Figure 21: Dual antenna system connections 6.13.2.
Technical Manual AM Systems 6.13.3 Triple antenna system (double aisle) In case receivers are connected to the transceiver it is of great importance to connect the FTP and analogue connection cables to the proper connectors on the TRX and RX boards. Figure 22 shows the connections for a triple system (RX + TRX + RX).
Technical Manual AM Systems 6.13.4 Quad antenna system (triple aisle) In case four or more AM antennas need to be installed as one complete system, all antennas need to be connected as shown in Figure 23.
Technical Manual AM Systems 7 Configuration This chapter describes the recommended adjustment procedure for the AM transceiver and receiver. 7.1 7.2 General connections x Refer to chapter 3.1 (page 9) for noise sources and installation guidelines. x Position the antenna(s) at the required location.
Technical Manual AM Systems 8 Cross Point Device Explorer This chapter covers the AM transceiver and receiver settings in combination with the Cross Point Device Explorer software. Please refer to chapter 2.2 for details on the Field Bus structure. For the Cross Point Device Explorer installation procedure and other general settings we refer to the Cross Point Device Explorer User Manual (download available at www.crosspoint.nl). Make sure to keep your laptop at least 3m away from the antennas.
Technical Manual AM Systems 8.3 Store overview When the Device Explorer is started and you have successfully logged-on, the Store overview screen opens. All Access Points that are available for you are shown in this screen. Figure 25: Store overview Select the required store from the Store overview screen through a double click on the store to be able to perform local or remote service to the AM systems that are installed in the selected store.
Technical Manual AM Systems Figure 26: Dashboard – No devices found Figure 27: Dashboard – Devices found, no entrances found Cross Point Device Explorer v4.
Technical Manual AM Systems Figure 28: Dashboard – Devices and entrances found 8.5 Logon to the connected devices The AM devices are secured against unauthorized access by means of a special code, the Installer Access code. The Access Point logs-on to the devices using the Installer Access code. The Installer Access code is automatically derived from your company´s dealer code and cannot be customized anymore. The Field Bus section shows if the logon to all detected devices was successful.
Technical Manual AM Systems 8.6 Creating entrances If entrances have not yet been created and the Device Explorer shows the screen as displayed in Figure 27, you can just click the Yes button to start the automatic antenna arrangement on the Access Point. Once the antenna arrangement procedure has finished, the Entrances section in the Dashboard will show the number of entrances that were created, each individually selectable entrance and the number of visitors and alarms for the selected entrance.
Technical Manual AM Systems 8.7 Configuring entrances When the Entrances section is clicked in the Dashboard, the Entrances page is shown. Figure 31: Entrances The Entrances page is divided in 2 parts: 8.7.1 Entrances - Top part The top part of the Entrances page consists of the following section: Mute button Button bar Main menu 3D view Figure 32: Entrances – Top part Cross Point Device Explorer v4.
Technical Manual AM Systems The Mute button enables you to switch off all buzzers on all devices at once. This is useful when you are configuring the system and don’t want any loud alarms. 8.7.2 Main menu The Main menu lets you quickly navigate to the other available sections of the Device Explorer: 8.7.3 x System – refer to paragraph 8.
Technical Manual AM Systems Figure 34: Perspective view 8.7.3.3 Counting view Click this button to change the 3D view to helicopter view and see the number of visitors or alarms per aisle. Figure 35: Counting view - Visitors The visitors counting view is only available for AM systems with integrated visitor counters. The green number indicates the number of visitors that have entered the store through that aisle.
Technical Manual AM Systems 8.7.3.4 Entrance arrange view Click this button if you want to make any changes to the antenna arrangement or other entrance and antenna related properties. Figure 36: Entrance arrangement mode In the Main menu, an extra entrance named “Unarranged” appears. If any antennas could not be automatically arranged or extra antennas are added after automatic antenna arrangement was performed, these antennas are automatically added to the Unarranged entrance.
Technical Manual AM Systems The aisle width for each aisle can be specified. By default the value is set to 160cm, but can be changed to the actual value by clicking on the aisle width en entering the correct value. In case all aisles in this entrance have the same aisle width, just enter the value for one aisle and then click the chain button to change all aisles to the same aisle width.
Technical Manual AM Systems 8.7.4 Entrances – selected entrance When an entrance is selected in the Main menu and the Home button in the button bar is pressed, the bottom part of the screen will show the following tabs: 8.7.4.1 Notifications In case of an alarm situation, notifications will be used to draw attention and to present information about the type of alarm.
Technical Manual AM Systems 8.7.4.1.1 Alarms Notification Explanation Tag detected This notification can be used as a ‘pre-alarm’ feature when the option “Use visitor counter to distinguish in- and outgoing alarms” has been enabled. In case the option “Use visitor counter to distinguish in- and outgoing alarms” is disabled (so no detection of incoming and outgoing alarms), this notification must be used as the general alarm setting.
Technical Manual AM Systems 8.7.4.1.3 Other notifications Notification Explanation Default notification Enable this notification if you want to visualize that the antenna is switched on. For example the green LED can be switched on infinite to show the visitor that the system is active. Tamper alarm When a tamper sensor is connected to the transceiver board, a notification can be triggered when the cover of the antenna is removed without authorization.
Technical Manual AM Systems If you have an active internet connection, you can also tick the checkbox in front of the option ‘Save on server’ to store this new pre-defined notification centrally, so it is also available for your colleagues. Click the Save button to store the notification. Select a notification and click the Delete button 8.7.4.1.5 to delete a pre-defined notification.
Technical Manual AM Systems 8.7.4.2 Alarm history The Alarm history screen shows a list of the tags that have been detected on all antennas in this entrance. Figure 41: Alarm history Dependent of the notification settings, the incoming , outgoing and undefined alarms can be distinguished by means of their individually colored icons. By default all types of alarms are displayed, but pressing one or more of the filter buttons will show or hide the selected alarms.
Technical Manual AM Systems 8.7.5 Entrances – selected antenna If you click on a TRX or RX antenna in the 3D-view, some individual antenna settings can be configured. 8.7.5.1 Transceiver (TRX) settings When a TRX antenna is selected in the 3D-view, the following tabs will appear at the bottom of the screen: 8.7.5.1.1 Scope view The Scope view screen shows the signal that is received by the receiver part of the transceiver and/or separate receiver(s) that might be connected to the transceiver.
Technical Manual AM Systems The threshold level can be adjusted in two ways; automatically or manually Automatic threshold level adjustment Tick the Automatic threshold checkbox to activate automatic threshold level adjustment. Depending on the environmental noise levels, the transceiver will automatically and continuously adjust its threshold level higher than the noise levels. The Minimum threshold option will prevent the threshold level from getting too low, potentially making the system too sensitive.
Technical Manual AM Systems Figure 43 shows an example of faulty synchronization. Our system’s transmission burst (Burst window 1, indicated as a vertical orange bar) is at a different moment in time than the other system’s transmission burst, which is on its turn causing interference in our system’s detection window.
Technical Manual AM Systems We now have two ways of synchronizing the systems; manually or automatically. Manual synchronization By default the transmission burst can be synchronized manually by dragging and moving the burst throughout the complete 20ms time base. Just hover the mouse cursor over our transmission burst (the cursor will change to a horizontal double arrow) and press down your left mouse button.
Technical Manual AM Systems 8.7.5.2.1 Temporarily disabling other device bursts When you start synchronizing entrance(s), start by selecting the Synchronization page of the first device. It is very useful to switch the transmission bursts of all other entrances off, so you can determine if there are any other AM systems in the area, to which you must synchronize your system.
Technical Manual AM Systems 8.7.5.2.2 Alarm history The Alarm history screen shows a list of the tags that have been detected on the selected antenna. Figure 45: Alarm history Dependent of the notification settings, the incoming , outgoing and undefined alarms can be distinguished by means of their individually colored icons. By default all types of alarms are displayed, but pressing one or more of the filter buttons will show or hide the selected alarms.
Technical Manual AM Systems 8.7.5.2.3 Notifications – I/O settings Next to the audio and visual alarm notifications, as described in section 8.7.4.1, also a relay and a maximum of 2 I/O’s can be programmed to activate any external device (camera, external buzzer, etc.) during an alarm situation. These notification settings have to be programmed on each individual antenna, since the relay and I/O’s are antenna specific. Any externally connected device needs to be physically connected to the antenna.
Technical Manual AM Systems 8.7.5.2.4 Tuning AM The AM transceiver is performing at its best when maximum power is being transmitted at 58kHz. The Tuning screen shows a graphical display of the top and bottom antenna loop tuning and their associated power. Figure 47: Tuning AM By changing the positions of the antenna jumpers on the transceiver board, you can find the positions for both loops where they have the highest voltage output at 58kHz (the vertical red line).
Technical Manual AM Systems Antenna tuning assistant It can also be useful to use the Jumper settings assistant to determine the best jumper positions. Just click the positions of the jumpers in the Current image to indicate the current position of the jumpers on the board. Then click the Check button and the Advised image will show the advised jumper settings for optimal performance.
Technical Manual AM Systems 8.7.5.3 Receiver (RX) settings When an RX antenna is selected in the 3D-view, the following message appears: Figure 50: Receiver selection The message indicates that there are no options to configure for the selected device. Cross Point Device Explorer v4.
Technical Manual AM Systems 8.8 System Clicking the System hyperlink in the Main menu or clicking the System information section in the dashboard will open the System information screen. Figure 51: System information & notifications The top-part of this screen shows information about the connected transceiver(s) and whether the firmware of all connected devices is up-to-date. The bottom part shows 3 tabs: 8.8.
Technical Manual AM Systems 8.8.2 AM settings The AM settings screen allows specific AM settings to be changed. Figure 52: AM settings The Burst frequency setting defines how many times per second a transmission burst is send. The available options are: @50Hz power frequency @60Hz power frequency 37.5Hz, 50Hz (default), 75Hz and 150Hz 45Hz, 60Hz (default), 90Hz and 180Hz The burst frequency setting is a system wide setting, which will be applied for all connected AM devices.
Technical Manual AM Systems 8.8.3 Alarm history The system’s Alarm history screen shows a list of the tags that have been detected on the entire system (all antennas in all entrances). The information is retrieved from the antennas when you enter this screen, so it may take some time before the information is visible. Figure 53: System – Alarm history Dependent of the notification settings, the incoming , outgoing and undefined alarms can be distinguished by means of their individually colored icons.
Technical Manual AM Systems 8.8.4 Devices The Devices screen shows a list of all connected devices, their firmware status and some system settings. Figure 54: System – Devices In the Devices list it is possible to: x x x x x View the firmware version of each connected device Upload new device firmware Locate an individual device or all devices at once Reset an individual device or all devices at once Remove disconnected device(s) Just hover over a device and the Locate 8.8.4.
Technical Manual AM Systems 8.8.4.4 Removing disconnected devices All devices that have the disconnected status can be removed permanently by pressing the Remove disconnected devices button 8.8.4.5 . Turning all LEDs on/off The LEDs on all connected devices can be switched on at once by pressing the Turn all LEDs on button . This is useful to check whether all devices are connected, especially in large installation. Press this button again to switch all LEDs off again. 8.8.4.
Technical Manual AM Systems 8.9 Device Explorer Button Bar This section covers the functionality of the button bar. Dependent of the selected button bar button, a set of sub-buttons can appear. 8.10 Home view Bar Sub button function Show tag panel Hide panel(s) 8.11 Perspective view Bar Sub button function 8.12 Counting view Bar Sub button function Show visitor counting Show alarm counting Reset visitor or alarm counting totals Cross Point Device Explorer v4.
Technical Manual AM Systems 8.13 Entrance view Bar Sub button function Start automatic antenna arrangement Mirror the devices in this entrance Reverse visitor counting direction for all devices in this entrance Add a new entrance Remove an empty entrance 8.14 Toggle view direction Bar Button function Toggle view direction (looking into the store or looking out of the store) Cross Point Device Explorer v4.
Technical Manual AM Systems 9 Regulatory information FCC WARNING This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. NOTE 1: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules.
