RF MONO 8 - AMERSEC Manual_Mono H… · RF MONO HIGH FREQUENCY TEL: +420 271 960 054 FAX: +420 271...

RF MONO HIGH FREQUENCY

TEL: +420 271 960 054 FAX: +420 271 770 732 SUPPORT: +420 296 150 610 of 15 [email protected] www.amersec.com

RF MONO 8.2MHz

PCB CONNECTION

Please see the last section in this document.

FOREWARDS

This user guide contains basic information on how to adjust our RF Mono Antenna System SP82 and obtain its best performance possible. It is supposed that the installer is familiar with installing RF EAS systems. Follow all the rules common to installations of RF systems, such as wiring, avoiding having metal constructions close to the system and other systems. Realize that the single antenna system is disadvantaged when compared with transmitter-receiver 8.2 MHz technology. It must transmit and receive alternatively having much less time to detect tags and labels. Sweeping frequencies make it even worse. 8.2 MHz transmitters cause the system to reduce sensitivity. Therefore, before you install a system find out if there are any 8.2 MHz transmitters in stores nearby and decide whether to use tags or labels accordingly or install more systems closer to each other. We recommend to test the system performance before it is installed in order to avoid problems with intereference. 1. General system features

The mono-antenna 8.2 MHz SP82 detects hards tags and sticker paper labels 8.2 MHz.

More systems can be synchronized, so wider exits can be protected.

The system was approved in accordance to following regulations: ETS 300 330, EN 55022, ETS 300 683 – tests 6100-4-2, 6100-4-3, 6100-4-4, 6100-4-5, 6100-4-6.

Technical specifications

Operation frequency 8.2 MHz ± 7.5 %

Power supply Standard plug-in 15 V AC

Mains voltage 220 - 240V/AC @ 50 Hz (EU) 110 - 120V/AC @ 60 Hz (US/CAN)



PRE-INSTALLATION

Try to avoid installing any electrical wiring within 1 m and parallel to the system as well as vertical power poles from floor to ceiling.

Avoid having tagged merchandise within 1.7 m of the system.

When possible the antenna should not be installed closer than 1 m from any electrical devices (neon lights, telephones, computers....)

The system should be installed at least 0.9 m from the exit door. This will greatly reduce the possibility of resonance caused by moving metal door frames and door security systems. If the doors swing inward, the door arc must not come closer than 0.3 m from the antenna. (This applies only to metal frame doors)

Avoid installing the system too close to any TX transmitter of a Tx-Rx system. Reasonable and still acceptible distance is 10 m but we recommend to perform a test because some Tx-Rx systems are „friendlier than others“.

If you install multiple systems in a store (even two or three) synchronize systems using a cable. It will guarantee problem-free operation at no extra costs.

Adhering to the suggestions listed above will ensure problem-free operation of the system. Connection of power supply Lead the power supply cord to system and connect it on the board as shown in the picture below:

Screened cable is not necessary.

BASIC SYSTEM ADJUSTMENT

Put the DIP5 on the board to the position OFF (manual sensitivity control). After having the system powered try to find out if there is any resonance in the store. Especially when you cannot stick to the suggestions listed above, place the system in a position where it should be installed and turn the antenna round. Check the information LEDs and if there are more than 4 of them ON the system will detect neither tags nor labels. You must reduce sensitivity a bit by turning GAIN2 (on old boards GAIN3) trimpot anticlockwise, so maximum three LEDs are ON and test the detection again. If it is not satisfactory you will probably not be able to install the system. If the LEDs are ON and are blinking fast in regualar intervals the most likely reason is that somewhere around there is a transmitter/receiver system operating on 8.2 MHz frequency. Reduction of sensitivity may help but the detection will not be at its maximum. Swing the doors (if the system is being installed close to it) and check whether they do not cause alarm. (applies to metal frame doors only). If so, switch the DIP3 in the position ON. System reaction will a bit slower but still satisfactory. If the system is alarming (constant beeping) there is resonance in the store. Alarming will stop automatically after about 30 seconds. First check whether you have any tags near the antenna. (All LEDs will go on once tags or labels are too



close and the system stops detecting). Then find out if another mono-antenna system 8.2 Mhz isn’t the cause of the interference. Turn the SYNC button and check if some of the LEDs go off. This may eliminate interference a bit, especially if the signals causing trouble are at regular intervals. (See adjustment and LED indication of interference) . If you exclude this it could be the door or metal frames or metal objects, devices, coils of wire etc. that cause the resonance. Earthing metal frames and the door might help. Finally switch the DIP5 in the position ON (automatic sensitivity control – only boards supplied from April 2004) Never install the system unless you have found the cause of the interference or resonance. Always remember: Constant false alarms are never caused by the system itself and the reason is always external. Shop owner often

claim that they do not have tags close to the system but in most cases they do. If the system is constantly alarming, the reason is always the resonance caused by tags being too close to the

antenna or a metal object such as a door frame or any metal construction, or another system operating on the same frequency.

Always consult the proprietor of the store as to the proper location of the system. Never drill holes in the floor before he or she agrees with it.

Try to persuade them that keeping to the basic installation guidelines is better than solving problems later on.

ADVANCED SYSTEM ADJUSTMENT

The systems is pre-set in the factory so apart from synchronization and sensitivity no other parameters need to be adjusted. But in special conditions you can improve the system performance. What can be adjusted: o Transmitting output power o Sweeping frequency o Central operational frequency o Synchronization o Receiver sensitivity Output Power We recommend to set this value to the maximum (clockwise) which is the factory default setting. This parameter can be adjusted by the trimpot PWR which is placed under the metal screening but accessible through an opening (on the right in about the middle next to the SWEEP trimpot). NOTE: The real need of changing the system power occurs only when original antennas are not used, especially large antennas. Sweeping Frequency Interval We recommend to set this value to 50 % of respective trimpot range – default value - (from 7.9 to 8.55 MHz is 8 % of center frequency) (the system is working from 7.9 up to 8.55 MHz, if the central frequency is set to 8.2 MHz). This parameter can be set by the trimpot SWEEP placed under the metal screening but accessible through an opening (on the left in about the middle next to PWR trimpot). Maximum sweep frequency interval will be set clockwise.



NOTE: Reducing of SWEEP may help to eliminate adverse resonance caused by metal objects or mains installation near the system. Also when tags with exact resonance circuit frequency are used, reducing of SWEEP may improve the system detection. But on the other hand the price for that may be worse detection of paper labels. System Sensitivity The system sensitivity can be controlled manually or automatically (systems and boards supplied from April 2004). Manual control: Switch the DIP5 in the position OFF. Turn the trimpot GAIN2 (GAIN3 in the old version) to the right (maximum clockwise) and check the information LEDs. If interference is high (more than 4 red LEDs are on) reduce the sensitivity a bit. Remember that in evenings the noise level goes up and the system might stop working. Therefore it is advisable to reduce the sensitivity so only 1 or 2 LEDs are on. Automatic control: Switch DIP5 in position ON. It is advisable to test the noise in the “manual sensitivity control” mode just to check what the maximum system sensitivity will be like. Then turn the trimpot GAIN2 to the maximum (clockwise) and put the DIP 5 in the postion ON. After a time, 60 seconds or so, the system will adjust the sensitivity to its maximum in particular conditions. NOTE: If you have been testing the system detection for some time it will be reduced automatically. The system is programmed to remember tags being close to the antenna. To avoid this reset the system after a time by simply powering it off and on again or by pressing the RST button. Center Frequency The CENTER frequency is set to 8.2 Mhz. Changing this value may cause worse detection of tags and labels. You can find an opening in the metal screening on the right of the board at its bottom. Be carefull, you will be adjusting a coil core which is vulnerable to damage. o Set the system to show screen n.2 on the test point TP2. o Connect your scope to GND and TP2. o If there is no 8.2 MHz tag or a label in the detection area you should get following picture on the screen.

no tag detected

0

0,5

1

1,5

2

2,5

3

3,5

0,0000 0,0002 0,0004 0,0006 0,0008 0,0010 0,0012 0,0014

time [s]

U t

p2 [

V]

o Approach an exactly tuned hard tag 8.2 MHz to the system detection area. o Adjust the coil CENTER to get the following picture



Notes:

o The resonance response can be seen on the fifth wave peak. o Maximum central operational frequency is counterclockwise. o Be careful while you are setting this parameter. Damage of the internal ferrite coil core will make impossible to

set the right value of central frequency. The following screen shots will help you to set the central frequency.

Note: The resonance response can be seen on the sixth peak.

System central frequency is 8.1 MHz

0

0,5

1

1,5

2

2,5

3

3,5

0,0000 0,0002 0,0004 0,0006 0,0008 0,0010 0,0012 0,0014

time [s]

U t

p2 [

V]

Note: The resonance response can be seen on the third peak.



Synchronization The system derives the synchronization signal from the mains frequency. That means it will transmitt 50 times (or 60 times) per second. Changing SYNC value by turning the SYNC trimpot changes the delay after the power supply signal passes the “0” level. (zero delay … counterclockwise, maximum delay … clockwise of “SYNC” trimpot ) This delay enables to set more systems which work not far from one another, to transmit in different moments, and thus elimininate negative interference. Here is the way how to find the best synchronization time manually: o set the system to show screen n.5 on the test point TP2. o Connect your scope to GND and TP2. o You should receive following signal on the scope.

Synchronization settings - the signal on screen

n.5

0,0

0,5

1,0

1,5

2,0

2,5

3,0

3,5

0,0000 0,0002 0,0004 0,0006 0,0008 0,0010 0,0012 0,0014

time [s]

U t

p2 [

V]

o You can see 8 peaks (their magnitudes are around 3V) that are generated by the system. The area between them is

the noise (the noise magnitudes are around 1V in this case). Adjust the “SYNC” trimpot in order to reach the lowest possible noise signal.

Final Points of System Settings o Disconnect the scope. o Reset the system (press the “RST” button) o LED’s from upper left corner of the PC board will display the current noise level o The best system sensitivity is set when no LED’s (from the left upper corner of the PC board) are ON but up to two or

even 3 LEDs being ON may in most cases be also acceptable . o If 4 or more are ON, we recommend to reduce the system sensitivity by settings DIP1 to OFF or with the trimpot

“GAIN3”.



BOARD COMPONENTS

1. RST SWITCH– reset of control program

2. SCREEN SWITCH – when you connect a scope to test points TP3 and GND you may switch screen outputs. Every push causes another screen to be displayed. (see also LEDs below)

Screen list: 1. input signal 2. filtered input signal 3. resonance close to the signal (caused by tags, metal construction, loop of wire, etc) 4. resultant input signal 5. signal detection on each frequency (there are 8 frequencies transmitted) 6. the same as 5 7. not used 8. not used

When SCREEN 5 is displayed and you hold the button pushed for at least 5 seconds, the alarm counter will be reset (set to 0)

3. SYNC Trimpot - when more systems are installed in a store you may use it to synchronize them. This trimpot

will serve to setting each system for a different moment to transmit so they don’t interfere. Just by turning it to another position.

When “individual synchronization” is used this trimpot will set the system to an individual frequency of transmitting. That doesn’t mean 8.2 Mhz or so but how many times the transceiver will transmit per second. Values are in the range 30 – 60 per second. Recommended for two systems only.



4. S.TIME Trimpot - setting of alarm sound time

S.RPT Trimpot - setting of beep frequency (sound repeat) L.TIME Trimpot - setting of alarm light time

5. GAIN 2 (or GAIN 3 in old systems) Trimpot

Sensitivity adjustment - only GAIN2 (GAIN3) is used in SP82.

6. VOLUME Trimpot – (beeper) sound volume

7. SWEEP Trimpot – placed under the screening (metal cover) placed on the right side of the board. There are two

openings. The left one of the two is SWEEP adjustment. Maximum is set clockwise. Best results are mostly achieved having SWEEP set to 50% of the range.

8. TC Trimpot – output power setting. Make a wire loop and connect it to a scope. Then place it close to the

antenna and watch the signal. By turnig TC you may adjust the highest signal for the best performance. Recommended when not original antenna is used. The second opening on the right is POWER setting.

9. LEDs 1 - 8

Indication of all these LEDs differs and depends on which output SCREEN is set. (see above). You may use LED indication instead of a scope. It is not as exact but still it can give you invaluable information. Press the SCREEN button and while you holding it pressed you can see the measured signal number corresponding to the list below. When you release it you can see the values measured as they go on and off. Number of LEDs being ON simulates the level of a particular signal output. 1. input signal (default after powering the system on) 2. filtered input signal 3. level of resonance caused by tags, metal construction, loops of wire, etc 4. resultant input signal 5. signal detection on each frequency (there are 8 frequencies transmitted) 6. the same as 5. 7. not yet used 8. indication of sensitivity level reduction in automatic regime (DIP 5 ON). Example: 6 LEDs ON…80% of

maximum or reduction by 20%

10. LED PWR – indicates power. If it is not ON the system is not powered.

11. EXT SYNC – indicates presence of external synchronization signal

12. DIP SWITCHES:

Dip switch Description

DIP1 OFF… synchronization is derived from mains ON… .individual synchronization (may be set by turning the SYNC trimpot)

DIP2 used only when more systems than 5 are synchronized

DIP3 Protection against interference o ON… normal sensitivity – standard resistance against interference (default -

normal conditions) o OFF…lower sensitivity but more immune against interference



DIP4 Setting of label protective mode ON…the system will reduce output power once it has detected a label. Thus

it cannot be deactivated by the system (as a result of this the sensitivity level is lower and reaction a bit slower )

OFF… output power is stable (default setting)

DIP5 Sensitivity control: OFF … the sensitivity is controlled manually (trimpot GAIN2) ON … the sensitivity is controlled automatically by the microprocessor.

Note: If the switch 5 is in position ON – “automatic sensitivity control” - the maximum sensitivity is achieved only when the trimpot GAIN2 is put in maximum position (clockwise).

DIP6 Setting of compatibility with the hardware version 2.0, software version 1.42 and earlier.

ON … the system sends synchronization pulses to the DEAC terminal block in order to control deactivator operational time. The system is not compatible with the previous hardware and software versions

OFF… the system doesn’t send synchronization pulses to the DEAC terminal for the controlling of deactivator operational time. The system is compatible with all previous versions of hardware and software

DIP7 Additional sensitivity setting: OFF … the system sensitivity is lower ON … the system sensitivity is higher

DIP8 Switches the system from master to slave regime (only software version 1.56 and higher ) Positions: ON=master, OFF=slave (after switching into another position press the RST button or disconnect and connect power supply)

13. IN SYNC OUT terminal block – synchronization signal output

SYNCHRONIZATION

1. Individual synchronization is recommended for 2 systems only. Switch DIP 1 to the position ON and set the

frequency of individual transmitting by SYNC. (But still rather use the synchronization derived from the mains)

2. Synchronization derived from the mains frequency Usable for up to 4 systems in a store. No wire connection necessary. By turning SYNC trimpot you can adjust a moment of transmission in each system. These moments must differ, otherwise the systems will affect one another. LED indication will show you if there is any interference caused by other systems. You may use an oscilloscope but the LED indication will do in most cases.

3. Synchronization using a cable (master-slave method) Up to 25 systems can be synchronized when master - slave method is used.

A) software versions up to 1.53 (check label on the microprocessor chip)

1. A system must be defined as a MASTER and usually it is the one which is the nearest to the power supply



2. Lead a simple synchronization cable from the terminal block SYNC OUT to the next system and connect it to SYNC IN

3. If connected properly the EXT SYNC LED on slave antenna boards must be ON. If not so, interchange wires of the synchronization cable. The LED is ON only when the master system is powered !!!

4. Lead a cable from SYNC OUT of the slave system to the next one and do the same for all the systems you need to synchronize.

5. When all systems are powered on LEDs EXT SYNC must be ON in those systems that detect synchronization signal. That means all systems except for the master.

6. If more than 5 systems are synchronized (by means of a synchronization cable), every 5th one must have its DIP 2 set in the position ON. Note: When you are going to install more than 5 systems, we recommend to contact us and we will send you a plan how to do the switching.

B) software version 1.56 and higher (check label on the microprocessor chip)

1. A system must be defined as a MASTER and usually it is the one which is the nearest to the power supply. Its DIP 8 must be in the position ON (default).

2. Lead a simple synchronization cable from the terminal block SYNC OUT to the next system and connect it to its SYNC IN input

3. Put the DIP 8 of the designated SLAVE system in position OFF and reset the system by pressing the RST button

4. If connected properly the EXT SYNC LED on slave antenna boards must be ON. If not so, interchange wires of the synchronization cable. The LED is ON only when the master system is powered !!!

5. Lead a cable from SYNC OUT of the slave system to the next one and do the same with all the systems you need to synchronize. All slaves must have their DIP 8 in position OFF

6. If more than 5 systems are synchronized (by means of a synchronization cable), every 5th one must have its DIP 2 set in position ON. Note: When you are going to install more than 5 systems, we recommend to contact us and we will send you a plan how to do the switching.

4. Synchronization with a deactivator The SP82 mono-antenna system and deactivator are both electronic devices transmitting pulses. To avoid adverse affects of the deactivator (false alarms) both of them or all must transmit at different moments. If an individual system is used it is easy just by turning the SYNC trimpot on the system board (or in the deactivator). Also when two or three systems are installed this method gives usually satisfactory results. But for installations in supermarkets this method is not sufficient. American Security currently supplies a new version of SP82 board that enables to synchonize each individual system with its own deactivator. Please, check your software version on the system processor. If it is 1.52 and higher you can use this new method of synchronization. The deactivator must be versions 7.5, or 7.3/HS or higher.

o Connect the terminal block DEACT on the SP82 board with the SYNC IN terminal on the side of the deactivator o Check if the LED LF on the deactivator board is ON. If not so, interchange the cable wires. o Set the DIP6 on the SP82 board to the position ON. If there are more systems in a row synchronized by a cable

all must have DIP6 in the positions ON o Put the DIP3 on the deactivator board to the position ON and turn the trimpot SYNC (deactivator) to the left.

(maximum anti-clockwise) Remark: In this regime deactivators with the version 7.3/HS cannot be switched to so called “protective mode” !!! (see our manual for Deactivator for paper labels)



TROUBLESHOOTING

1. The system does not work at all Check the software version on the sticker label stuck on the processor chip. Version 1.56 and 1.57 require manual switching the system into the slave regime. The slave regime is necessary in multi-system installations and the system switched to slave will only work when at its SYNC IN input is a signal from a master system. Check DIP switch 8 and here are the positions: ON=master, OFF=slave. That means if a system is set to the slave regime it cannot work alone and in such a case has no detection. Switch it to master by putting DIP 8 in ON and it will work. 2. Control LEDs are blinking fast changing light intensity from left to right and the system doesn't detect tags and labels Reason: an 8.2 MHz transmitter of a RF two-antenna system is installed near your mono 8.2 MHz system. Such a transmitter causes a high-level of noise and may cause a substantial reduction of the mono 8.2 system sensivity. Just switch the system to the automatic sensitivity control regime ( DIP 5 ON) and test its detection. If it is not satisfactory and you cannot get better results there is no effective protection against it. 3. Touching problem- when you touch the metal antenna with your hand an alarm goes off. The reason: there is a resonance circuit made by a wire or a cable or a metal object near the system but its level of resonance is below the system detection limit. It is usually very difficult to find it. First try to put the DIP 3 in the position OFF. If it does not help switch the system to the manual sensitivity control regime (DIP 5 off) and reduce the system sensitivity turning slightly the GAIN2 trimpot until this problem stops. Then switch the system back to the automatic regime. The detection will go down a bit, but in most cases it is still satisfactory. In the automatic sensitivity control regime the maximum sensitivity that can be achieved (if the noise level is low) is set manually by the GAIN2 trimpot. When you press SCREEN button repeatedly so the 8th LED shows screen 8 the number of LEDS being ON indicates the level of sensivity reduction. For example all 8 LEDs ON means no reduction and 4 LEDs 50%. But don't forget that even no reduction may mean lower than maximum sensitivity if GAIN2 trimpot is not set at its maximum (clockwise). 4. Frequent false alarms appear, the detection is almost good. First check the information LEDs and check whether they are stable (not blinking fast). If so, turn the SYNC trimpot so the LEDs are stable. The cause was another pulse system 8.2 MHz or a deactivator. 5. Ocassional false alarm appear, the system detection is good. Such alarms are usually caused by foreign signals or by metal doors that swing or open and close automatically. First try to turm the SYNC trimpot to another position. If it doesn't help, put the DIP 3 in the position OFF and if the problem persists, put the DIP 1 in the position ON and turn the SYNC trimpot and try to find its best position to eliminate the false alarms. If nothing helps there must be a strong resonance caused by a metal object, door frame or coil of a cable. 6. Master slave system does not work even though the synchronizing cable is connected well. You have probably powered a slave system before its master. Each slave system will be automatically set to the slave regime only when its master system is powered.(software version 1.53 and lower) So power all the systems at the same time or from the master to the next slave and finally power the last slave in the row. (or press their RST buttons). 7. Labels are deactivated when they are near the system Use labels from another manufacturer or supplied by us or put the DIP 4 in the position ON. The system will reduce its power once it has detected a label and it cannot be deactivated. But the system reaction will be a bit slower and detection distance may be reduced.



RF PCB CONNECTIONS Amersec RF Antennas are designed to be universal (UNI), so that any Amersec RF electronic can be connected to the pedestal, thus making it easier to test different configurations and electronics. It also means that MetalSpy can be easily added to an RF Dual system at any time. It is important that the PCBs be connected correctly for proper functionality! Amersec UNI antennas consist of 3 loops. The “double-8” loop and the “8” loop are merged together in a small 3-crossbar module, supplied with all UNI antennas. The “O” loop is not connected to the 3-crossbar module. The antennas are also supplied with 2 cables; a DUAL cable which connects the 3-crossbar module to the Dual PCBs, and a MONO cable which connects the 3-crossbar module to the Mono PCBs.

RF Antenna Wiring



NG or HF MONO

1. Connect the cable labeled “MONO” to the small three-crossbar module. The other end is connected to the green 4-pin terminal on the Mono PCB labeled RX-RX-TX-TX.

2. The “O LOOP” is connected together by default. Pull it apart and connect the 2 wires to the 2 positions on the green 4-pin terminal on the Mono PCB labeled TX-TX.

3. Set the alarm light voltage jumper to 12V, located on the small module for the alarm light.

4. NOTE: If you would like to configure the NG or HF Mono as a 1-crossbar antenna, you may connect it the same way as LF Mono (see below).

LF MONO

1. LF Mono is the only electronic which does not work well in the default 3-crossbar configuration. 2. The “O LOOP” is connected together by default. Pull it apart and connect the 2 wires to the 2 positions on the

green 4-pin terminal on the Mono PCB labeled O-O. 3. Disconnect the “8” loop wires from the 3-crossbar module and connect them directly to the 2 positions on the

green 4-pin terminal on the Mono PCB labeled 8-8. 4. The “double-8” loop and the 3-crossbar module remain unused.

5. Set the alarm light voltage jumper to 12V, located on the small module for the alarm light.

DUAL SUPERDET or EASYDET

1. Connect the 3-wire cable labeled “Dual” to the small 3-crossbar module. The other end is connected to the green 3-pin terminal on the PCB labeled RF OUTPUT (on TX board) or ANTENNA (on RX board).

2. Set the alarm light voltage jumper to 24V, located on the small module for the alarm light

3. The “O LOOP” must be connected together. If the ends of this loop are disconnected, the system will not work.

DUAL SUPERDET or EASYDET with INBUILT METALSPY

1. Connect the DUAL TX and RX as instructed above. 2. The “O LOOP” is connected together by default. Pull it apart and connect the 2 wires to positions 1&2 on the

MetalSpy TX, or positions 1&3 on the MetalSpy RX. 3. NOTE: If the MetalSpy is disconnected or removed, the “O LOOP” must be connected back together, otherwise

the RF Dual system will not work!

RF MONO 8 - AMERSEC Manual_Mono H… · RF MONO HIGH FREQUENCY TEL: +420 271 960 054 FAX: +420 271...

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Transcript of RF MONO 8 - AMERSEC Manual_Mono H… · RF MONO HIGH FREQUENCY TEL: +420 271 960 054 FAX: +420 271...