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Road Loop Antenna Installation

Introduction

The Road Loop Antenna is a transmitting antenna that works in
conjunction with the Dipole Antenna. Road Loop Antenna wire is
available in lengths that will accommodate roadways or gate
entrances up to 70-feet in width.

The Figure 22 shows a simplified diagram representing the field
generated by a Road Loop Antenna. In reality, antenna fields are
lobed and asymmetrical, but the longest range will still be along the
longest sides.

Antenna fields are affected by the type of pavement, amount of rebar,
and nearby power lines. For these reasons, it is strongly
recommended that the Road Loop be laid out and tested before it is
permanently mounted.

Figure 22 A Road Antenna transmit field.

Содержание NT132

Страница 1: ...NT132 RFID System Installation Manual...

Страница 2: ...only guarantee the correct operation of its products if they are used with the software programs systems and consumables supplied or authorized in writing by AXCESS TM INC AXCESS TM INC recommends kee...

Страница 3: ...5 Connecting Power to the Reader All Types 32 Configuring 3 x Reader Firmware 35 Required Materials 35 Connecting a Computer to the Reader 35 Communicating with the Reader via HyperTerminal 37 Reader...

Страница 4: ...Prerequisite Tasks 68 Installation Considerations 68 Installing the Bar Antenna 70 Swing Frame Antenna System Installation 71 Introduction 71 Required Materials 71 Prerequisite Tasks 71 Installing the...

Страница 5: ...ems with NT132 Components 93 Cable 93 Power 93 ATU 93 Road Loop Antenna 94 Dipole Antenna 96 Bar Antenna 96 Swing Frame Antenna 97 Wiegand Reader 98 Serial Reader 98 FTT Reader 99 Serial Gateway 99 Ta...

Страница 6: ......

Страница 7: ...they were intended Always wear eye protection when using power tools When drilling cutting or drilling do not damage wires pipes or structural components When installing antennas and related equipmen...

Страница 8: ...Antenna Supply Cabinet Figure 1 A real life example of an antenna field The gray area is the field of a Swing Frame Antenna mounted in a hall Always test your field to ensure that you get the coverage...

Страница 9: ...g Use only RG 58 U coaxial cable with 50 ohm impedance nominal solid copper center conductor 55 tinned copper braid or better 100 foil shield coverage for example Belden 9310 The maximum recommended c...

Страница 10: ...r example Amphenol 31 320 Connectors can be damaged during crimping Having more than eight on hand is recommended Tape measure Power drill and bits Diagonal cutters Phillips and flathead screwdrivers...

Страница 11: ...be green for Data Zero white for Data One and black for Common Ground Required for FTT Reader Installation Unshielded twisted pair wire to connect Readers to each other For details on network lengths...

Страница 12: ...arking Road Loop Antenna placement Fishing line 15 lb test for pulling cable Tie wraps and anchors Battery powered screwdriver Duct tape A pair of walkie talkies if more than one installer will be on...

Страница 13: ...certain not only that the computer left the building but that it was not carried by the person to whom it was assigned Obviously such technology has quickly found its way into disciplines such as vehi...

Страница 14: ...simple as a single Reader and Bar Antenna controlling the front door of a small office or it may comprise a network of interconnected devices and Readers controlled by a computer Reader ATU Transmitti...

Страница 15: ...f Tags The typical types of Tags are Passive Tags A passive tag does not have an on board power source battery It is powered from the antenna radiation field of the transmitter that is trying to wake...

Страница 16: ...on Output data to a control device or a computer Figure 4 AXCESS Reader external view Types of Readers Serial This Reader communicates using the EIA 232 standard more commonly known as RS 232C It can...

Страница 17: ...cture frame Also depending on type of installation the transmitting antenna and receiving antenna may be combined into a single enclosure or may be built as separate units Road Loop and Dipole Antenna...

Страница 18: ...he Reader Types of ATUs There are two kinds of ATUs currently provided Although they require different methods of optimizing performance they perform the same function Toggle Switch ATU This ATU has a...

Страница 19: ...igure 6 Reader internal view The Reader Figure 6 in a typical AXCESS system consists of the following A stack of sub controller Printed Circuit Board PCB cards Unilon RX Card decodes the signal sent f...

Страница 20: ...th a standard Wiegand controller For each Tag read the Reader outputs data every 750 milliseconds Duplicate Tag information is stored in the Reader s buffer for 12 seconds so that redundant Tag reads...

Страница 21: ...urely with the cover hinge on the left and external connectors on the bottom Figure 6 Screw holes are provided inside the cabinet for mounting to a wall Figure 7 IMPORTANT When you mount the Reader be...

Страница 22: ...ce serial connector of the cable to the third party device Connect the DB9 male end to DB9 female connector on the Reader Step 2 For the third party device configure the communications port settings t...

Страница 23: ...has a serial output it cannot be converted to a Serial Reader The serial output can only be used for Reader configuration and diagnostics Step 1 Install the Wiegand control panel according to the inst...

Страница 24: ...D1 on the Terminal Block For standard Wiegand control panels the Data One wire is white Step 6 Run the Data Zero wire from the Wiegand control panel to D0 on the Terminal Block For standard Wiegand c...

Страница 25: ...d NC normally closed or NO normally open FTT Door Strike Device Common Ground NC normally closed or NO normally open Sensitive Trigger Relay Trigger To more Readers FTT FTT Motherboard FTT Motherboard...

Страница 26: ...chosen affects the cable distances allowed in the FTT network The recommended cable lengths are given in the next section Belden 85102 16 AWG single twisted pair stranded 9 29 unshielded plenum Belden...

Страница 27: ...per system operation Cable Type Max node to node distance Max total wire length Belden 85102 1640 feet 500 m 1640 feet 500 m Belden 8471 1312 feet 400 m 1640 feet 500 m Level IV 1312 feet 400 m 1640 f...

Страница 28: ...ly the following pin assignments are used Transmitted Data pin 2 Received Data pin 3 Signal Ground pin 5 Connecting the Serial Gateway to an FTT Reader Step 1 Prepare a sufficient length of twisted pa...

Страница 29: ...terminal in the FTT terminal block can hold up to four wires depending on gauge Note When connecting Readers to each other remember that shorter cabling makes for a better network because it improves...

Страница 30: ...rmally Open Device Device can be wired to either V Door Strike Secondary Output 24V Ground FTT terminal block TTL Relay Figure 12 Wiring details for driving a device Step 1 Run 22 AWG wire max length...

Страница 31: ...Closed NC terminal on the relay to the device with manufacturer recommended wire Applying Power to the Serial Gateway Step 1 Ensure that the 110V AC outlet is close by and easily accessible Step 2 Plu...

Страница 32: ...eader Grounding the Reader The Reader needs to be properly grounded Failure to ground the Reader will result in erratic performance Step 1 Run 14 AWG wire from a solid earth ground to the ground lug o...

Страница 33: ...Step 4 Run the power wires through the conduit chase Step 5 Insert the positive 24V wire into the terminal labeled 24V Figure 13 Step 6 Insert the ground wire into the terminal labeled G Step 7 Screw...

Страница 34: ......

Страница 35: ...A laptop running Windows is recommended for convenience A standard one to one computer modem RS 232 cable with a DB9 male connector IMPORTANT DO NOT use a null modem cable or null modem adapter Conne...

Страница 36: ...T motherboard and connected to the RS 232 port Step 4 Attach the DB9 male connector of the RS 232 cable to the external RS 232 port on the Reader Step 5 Attach the other end of the RS 232 cable to the...

Страница 37: ...ication Step 4 In the Connection Description dialog box that appears enter any name for the connection in the Name field and select the first icon in the Icon selection box Click the OK button Step 5...

Страница 38: ...mode See the section Toggling Between Default and Diagnostic Modes page 42 Reader Commands The following is a list of commands that can be sent to the Reader via the terminal application Code Action...

Страница 39: ...s not receiving information from the antennas Step 2 Type one of the above commands at the Enter prompt For example Enter Places the Reader into diagnostics mode IMPORTANT Do not press the Enter key a...

Страница 40: ...ge of the Tag case If the Reader and Tags are mismatched no Tag information will be output The Tag version information is stored so that the Reader will continue to read the same Tag version even if i...

Страница 41: ...The Reader will respond with Selected Value NN where NN is the code that you entered and Reader ID XXXXX where XXXXX is the new Reader ID number corresponding to the code entered For example if you t...

Страница 42: ...digit Tag ID number A Reader reporting 2 0 Tag information will output 10 digits to the terminal screen S S S S S T T T T T Where S The 5 digit Site Code of the Tag T The 5 digit Tag ID number For ex...

Страница 43: ...nored during this time interval When a Wiegand Reader is in diagnostics mode all Tag information is sent to the control panel including the 254 code Turning off the Diagnostics Mode Step 1 Turn off th...

Страница 44: ...sites where vehicles travel quickly over a Road Loop Antenna and the Tags may not have time to resolve the Reader ID number Step 1 At the Enter prompt type a dollar sign The Wiegand Reader will respon...

Страница 45: ...nsmitter Card Unilon Output Card RF Card TX Unilon RX Card RJ 45 Cabling Label Reader Case Figure 17 PCB stack cards The cards perform the following functions Unilon RX Card decodes the signal sent fr...

Страница 46: ...Connect the Reader to a PC and access the Reader with a terminal application See the section Configuring 3 x Reader Firmware page 35 for instructions Step 2 Press the reset button on the Unilon RX Car...

Страница 47: ...June 1999 47 Step 4 Press the reset button on the Unilon Output Card The Reader will display to the screen the firmware name its revision number the jumper settings and its ID number separated by doll...

Страница 48: ......

Страница 49: ...ackaged in a single housing that can be inconspicuously mounted near the access monitoring point An ATU optimizes the performance of one antenna pair to its environment Installation Considerations Whe...

Страница 50: ...the Reader and ATU and 20 feet between the ATU and each antenna AXCESS cannot guarantee performance if these parameters are exceeded Four 3 piece crimp type male BNC connectors for example Amphenol 3...

Страница 51: ...inches off the ground preferably at eye height Mark and drill the holes for mounting the ATU Step 2 Mount the ATU with the connectors pointing down There are screw channels at each corner of the ATU...

Страница 52: ...X RX RX RX TX TX Antenna Reader ATU Figure 20 ATU connections IMPORTANT All coaxial cable between the ATU and the Reader must be RG 58 U with 50 ohm impedance nominal solid copper center conductor 55...

Страница 53: ...s connector labeled TX to the connector labeled Reader TX on the ATU Step 5 Run the other cable from the Reader s connector labeled RX to the connector labeled Reader RX on the ATU Connecting the ATU...

Страница 54: ......

Страница 55: ...However it is recommended that the length of cable not exceed 20 feet Two 3 piece crimp type male BNC connectors The section Appendix A Coaxial Cable page 101 demonstrates how to prepare coaxial cabl...

Страница 56: ...Road Loop Antenna After or aligned with the Road Loop Antenna On the same side of the road as the Tags are mounted in the vehicles Four to six inches from any surface and four feet from the ground fo...

Страница 57: ...th measured and attach the BNC connectors to both ends of the RG 58 U coaxial cable See Appendix A Coaxial Cable page 101 Step 4 Connect one end of the cable to the Dipole Antenna If the Dipole Antenn...

Страница 58: ...length of cable that equals the cable length measured and attach the BNC connectors to both ends of the RG 58 U coaxial cable See Appendix A Coaxial Cable page 101 Step 3 Connect one end of the cable...

Страница 59: ...The Figure 22 shows a simplified diagram representing the field generated by a Road Loop Antenna In reality antenna fields are lobed and asymmetrical but the longest range will still be along the long...

Страница 60: ...le Embedding Sealer P 606 supplied by Bondo Corporation As a substitute you can use either 3 M s Detector Loop Sealant or Q Seal sealant IMPORTANT To ensure proper system operation do not substitute a...

Страница 61: ...and Road Loop Antenna 20 feet Max cable length between Reader and ATU 80 feet Minimum distance between Dipole Antenna and ground surface 4 feet Road Loop Antenna inch saw cut direction of traffic Slig...

Страница 62: ...nna TX connector on the ATU Step 8 Carefully feed Road Loop wire on toward the loop marked on the roadway Secure the wire with duct tape as you proceed Step 9 At the loop feed point begin to lay wire...

Страница 63: ...as with greater widths have larger fields Step 16 After ensuring proper operation remove the wire loop and concrete nails to allow cutting the groove into the roadway Common Layout Problems If the tra...

Страница 64: ...te using a diamond cut blade Two 1 8 blades with a spacer will be required Step 1 Confirm that the loop is correctly marked on the road surface Step 2 Lay out the 45 degree corner cuts It is helpful t...

Страница 65: ...45 degree turn Step 6 Use vacuum or compressed air to thoroughly clean out the groove Step 7 Insert the loop and lead in into the cut grooves Do not use a metal object to push the antenna loop into t...

Страница 66: ......

Страница 67: ...access to an entry exit point of a facility Antennas of this type radiate RF energy most efficiently in a direction broadside to the antenna and radiating less energy off the edges Figure 28 Partial r...

Страница 68: ...should be completed The ATU has been installed If not refer to the appropriate section in this document and install the ATU before continuing with the Bar Antenna installation The Reader has been ins...

Страница 69: ...door etc Keep in mind what will be tracked with the antenna personnel would carry Tags in their shirt or pants pocket Tags on laptops would be carried closer to the floor The read range for the Bar An...

Страница 70: ...to the Reader See the Connecting Power to the Reader All Types section page 32 Step 6 Tune the ATU in accordance with the instructions in the Maximizing Antenna Performance with the ATU section page 7...

Страница 71: ...The recommended maximum length is 20 feet 4 3 piece crimp type male BNC connectors see page 85 for installing BNC connectors Three blade rotary coaxial cable stripper Four mounting screws Phillips an...

Страница 72: ...tion but do not permanently install it at this time Have a helper hold the antenna in various positions until maximum coverage is achieved Step 6 Test the system by positioning the LED Test Tag at str...

Страница 73: ...methods for adjusting performance are different the ATUs are functionally the same Adjusting Antenna Performance Step 1 Apply power to the Reader Step 2 Open the Reader Ensure that the card stack has...

Страница 74: ...oltage meter Note the position that provides the peak voltage level on the voltage meter if any 0 5 10 15 0 D C VOLT S Optimum Tuning Figure 31 Voltage meter showing optimum tuning Step 3 Repeat Step...

Страница 75: ...s one big capacitor 0 1 F to from the circuit Jp11 adds removes two big capacitors to from the circuit Step 1 Ensure that all jumpers are placed in the Inactive position Step 2 On header Jp1 place the...

Страница 76: ...per in the Active position Step 10 One at a time place the jumper in the Active position on headers Jp1 through Jp9 and watch the LEDs for a strong signal Step 11 Place jumpers in the Inactive positio...

Страница 77: ...232 Unilon TX Card Transmitter Card Unilon Output Card RF Card TX Unilon RX Card RJ 45 Cabling Label Reader Case Figure 34 Reader Internal View The transmitting antenna puts out a wakeup field that ac...

Страница 78: ...the other IMPORTANT There are four blue adjustable pots in the card stack Refer to Figure 34 to ensure that you tune the correct one To lower the voltage level and reduce the transmission field Rotat...

Страница 79: ...the Asset Tag with the flat side attached to the asset Mounting a Tag to a Laptop Computer Some electronic devices for example laptop computers generate radio frequency emissions noise that may activ...

Страница 80: ...the instructions provided with the adhesive kit You may have to lightly sand the surface inside the marked area if the asset is painted or has a protective surface applied Step 10 Wearing latex gloves...

Страница 81: ...ocation This test is primarily for Tags that need to be mounted in the front windshield area This test may not be necessary for back window mounting Step 1 With the car out of range of the Road Loop A...

Страница 82: ...back of the Tag facing the glass at least 3 inches off the dashboard Step 2 If using Velcro apply one side of the Velcro mount to the location where the LED Tag was successfully tested Then mount the...

Страница 83: ...0 001 003 Revised June 1999 83 Tags and Personnel Required Materials Mounting materials clips chains etc Personnel Tags can be threaded onto a chain placed in a pocket or hooked on a clip A picture ID...

Страница 84: ......

Страница 85: ...le connector Multimeter Check the Power Step 1 Open the Reader case The LEDs on the PCB card stack should be lit indicating that power is supplied If the LEDs are not lit check your power connections...

Страница 86: ...the cable lengths there should be a maximum of 80 feet between the Reader and the ATU and 20 feet between the ATU and antennas If the cables are too long they will need to be shortened Step 4 Ensure...

Страница 87: ...check for continuity in the RX Antenna connector If there is continuity then there is a problem with the ATU Step 6 Check the RX connector on the antenna for continuity If continuity exists then there...

Страница 88: ...f continuity does not exist there is a problem with the ATU Fill out the Customer Support Questionnaire page 107 and call Customer Support at 1 800 577 6080 Bar and Swing Frame Antennas Step 12 Check...

Страница 89: ...re is also the possibility that the LED Test Tag is not working Hook the Reader to a PC and use another Tag in the field See the chapter Configuring 3 x Reader Firmware page 35 Step 4 If the range is...

Страница 90: ...ol panels directly on top of the transmitter board in the Reader case Figure 37 Step 8 If no Tag information appears on the computer screen place another Tag on the board If there is still no output c...

Страница 91: ...Parity None Stop Bits 1 Flow Control None Wiegand Reader Step 1 Ensure that the Wiegand control panel is SIA 26 bit standard compliant Step 2 Ensure that Data Zero Data One and Ground are wired to the...

Страница 92: ......

Страница 93: ...stened and in good order Step 4 Ensure that TX is connected to TX and RX is connected to RX on the Reader ATU and antennas Step 5 Check the continuity of the cables See page 87 for details on checking...

Страница 94: ...eated properly in the Toggle Switch ATU See page 74 for a discussion of seating the header Road Loop Antenna Problem The Road Loop Antenna has no range Step 1 Ensure that RG 58 U with 100 foil shield...

Страница 95: ...ane Number of wraps appropriate for the length of the antenna See the section Road Loop Layout Connecting to the ATU page 61 for further information on wrapping the Road Loop Step 14 Check environment...

Страница 96: ...na problem Bar Antenna Problem The Bar Antenna has diminished or no range Step 1 Ensure that RG 58 U with 100 foil shield coverage is used Step 2 Ensure that the cable lengths are within specification...

Страница 97: ...hin specifications no more than 80 feet between the Reader and the ATU and no more than 20 feet between the ATU and the antennas Step 3 Ensure that the connectors are well fastened and in good order S...

Страница 98: ...inst the information in the manual See the section Unilon Reset Buttons page 45 Step 7 Ensure that the Reader has power Information on providing power can be found on page 32 Step 8 Ensure that the Wi...

Страница 99: ...mitter card should have lit LEDs Step 6 Ensure that the Reader has power Information on providing power can be found on page 32 Step 7 Ensure that the FTT network wires are properly connected Serial G...

Страница 100: ...em 100 750 001 003 Revised June 1999 1999 AXCESS TM Inc Step 2 If the Tags are mounted on vehicles ensure that they are beige Black Tags become hotter than beige Tags in direct sunlight and can warp u...

Страница 101: ...stripper 3 piece crimp type male BNC connector for example Amphenol 31 320 Diagonal cutters BNC crimpers Multimeter with continuity check Attaching the BNC Connector Step 1 Cut RG 58 U coaxial cable a...

Страница 102: ...vised June 1999 1999 AXCESS TM Inc Sleeve Insulator Inspection Hole Crimp Area Contact Pin Plug Body Assembly Coaxial Cable Braid 11 32 11 32 3 16 Crimp Area Butting Flange 1 8 Inner Conductor Figure...

Страница 103: ...le BNC TX to the ATU Female BNC RX to the ATU DB9 Female RS 232 to the computer device Ground lug Internal terminal block for power and Wiegand Internal Free Topology Transceiver terminal FTT Readers...

Страница 104: ...onnector Internal Free Topology Transceiver terminal Internal relay terminal not used Power Adapter Input 120V AC 60 Hz Output 24V DC 700 mA nominal No load 37 5V DC Antenna Tuning Unit ATU Dimensions...

Страница 105: ...e Frequency Transmit 132 kHz Coverage 16 24 feet for a 4 x 6 loop can be much greater with larger loops Connectors Dual binding post to male BNC to ATU Dipole Antenna Dimensions Length 23 inches Diame...

Страница 106: ...sions Standard 16 x 20 x 2 Weight 6 7 pounds Coverage 8 feet typical Large 20 x 26 x 2 Weight 8 1 pounds Coverage 10 feet typical Frequency Transmit 132 kHz Receive 315 MHz Connectors Female BNC TX to...

Страница 107: ...trol Asset Management Personnel Management or a combination What Axcess Inc components did you purchase Tags Version number printed on bezel How Where are the tags mounted Reader What type of Reader s...

Страница 108: ...the LED Test Tag before it lights Do you have multiple transmitting and receiving antennas in close proximity to each other Y N If yes how many Additional Equipment What third party equipment is conn...

Страница 109: ...pole Antenna 57 Installing 58 Required Materials 57 Specifications 9 E Equipment Required 14 F Firmware configuring 39 Determining version 47 FTT Network Cabling Specifications 107 Terminating 36 FTT...

Страница 110: ...l Settings 42 Serial Reader Installing 27 Terminal Settings 41 Swing Frame Antenna 73 Connecting to the ATU 74 Installing 74 Required Materials 73 Specifications 10 T Tags 19 Active 19 AXCESS 19 Mount...

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