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Teletrac, Inc. - Prism TM Information and Installation Guide

6

1622-0300

B1

3/18/04

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Содержание Prism TM

Страница 1: ...lusion of this module you will Know the physical components that make up a Prism TM installation Know the current feature set of the Prism TM Know the components and processes used to acquire and tran...

Страница 2: ...Teletrac Inc Prism TM Information and Installation Guide 2 1622 0300 B1 3 18 04...

Страница 3: ...be the peripheral equipment used in a Prism TM installation Identify the internal components that make up a Prism TM Describe the method of how a Prism TM determines its location Identify what informa...

Страница 4: ...Teletrac Inc Prism TM Information and Installation Guide 4 1622 0300 B1 3 18 04...

Страница 5: ...n Motion detection 24 Speed Threshold 25 Dynamic Power Management 25 Message Store and Forward Message History 26 PRISM TM Installation Instructions 28 PRE INSTALLATION CONSIDERATIONS 28 ITEMS REQUIRE...

Страница 6: ...Teletrac Inc Prism TM Information and Installation Guide 6 1622 0300 B1 3 18 04...

Страница 7: ...all and test the Prism TM Now let s get going Unit One PHYSICAL CHARACTERISTICS PRISM TM The Prism TM is a custom built transceiver made for Teletrac The device is a black anodized aluminum box roughl...

Страница 8: ...options once the physical connector has changed Combo Hidden Antenna Roof Mount combo Antenna PERIPHERALS MDT The Prism TM is designed to use the same peripherals or accessories that the RF and CDPD...

Страница 9: ...Global Positioning Systems GPS uses man made stars or satellites as reference points to calculate positions on Earth accurate to within meters In fact with advanced forms of GPS you can make measureme...

Страница 10: ...it takes for a signal sent from the satellite to arrive at our receiver THE BIG IDEA MATHEMATICALLY In a sense the whole thing boils down to those velocity times travel time math problems we did in hi...

Страница 11: ...ctor that it can subtract from all its timing measurements that would cause them all to intersect at a single point That correction brings the receiver s clock back into sync with universal time and b...

Страница 12: ...ep 5 Correcting Errors ROUGH TRIP THROUGH THE ATMOSPHERE First one of the basic assumptions we ve been using throughout this tutorial is not exactly true We ve been saying that you calculate distance...

Страница 13: ...s they use are very very precise but they re not perfect Minute discrepancies can occur and these translate into travel time measurement errors SOME ANGLES ARE BETTER THAN OTHERS There are usually mor...

Страница 14: ...se problems GPRS The second system used by the Prism TM is the General Packet Radio System more commonly called GPRS This system is meant to be an invisible link from a mobile unit such as a wireless...

Страница 15: ...he GGSN At this stage the device can send and receive data To actually send a packet of data the device makes requests using a packet random access channel Channels are logical data paths consisting o...

Страница 16: ...ill download the location information that the GPS receiver has been providing Now lets say your driver is taking a lunch break under the awning of a drive up restaurant In this location the GPS recei...

Страница 17: ...c will use the SIM Cards as a quick way to move specific programming information from one location unit to another The SIM Card will contain information such as location schedules landmarks service re...

Страница 18: ...Teletrac Inc Prism TM Information and Installation Guide 18 1622 0300 B1 3 18 04...

Страница 19: ...actually going to sleep 6 minute Will the units use Ignition On Off messaging Y N Will the unit self locate when in coverage Y N How will the unit be located Workstation or Locate itself Wkstn Itself...

Страница 20: ...Teletrac Inc Prism TM Information and Installation Guide 20 1622 0300 B1 3 18 04...

Страница 21: ...low amount of electricity and places less of a strain on vehicle resources Dynamic Power Management X X X X Allows for low power consumption Location Store and Forward X X X Can determine location and...

Страница 22: ...ently located in PRISM TM FEATURES DEFINED The Prism TM has many new features in addition to the features seen in the Standard units Below is an explanation of these features Long Inbound Messaging Lo...

Страница 23: ...f the vehicle and doesn t require a message with a status change be sent to the workstation in order to change it s location schedule Also since a location schedule can also be stopped due to the vehi...

Страница 24: ...capability to store a set of coordinates inside the Prism TM that make up an area called a zone The Prism TM can then perform certain actions upon detecting where the vehicle is in relation to the zo...

Страница 25: ...through the set speed Dynamic Power Management By default the Prism TM is programmed with a robust interactive power management routine This routine forces the Prism TM to periodically shut down its...

Страница 26: ...uffer they are stored until they are downloaded The unit will still go to sleep with messages in the buffer Events or reports that occur while the unit is asleep will still be stored in the buffer Whe...

Страница 27: ...Teletrac Inc Prism TM Information and Installation Guide 1622 0300 B1 3 18 04 27...

Страница 28: ...d therefore units should be installed as quickly as possible and not kept in stock c Next remove the courtesy light fuse in order to avoid running the vehicles battery down during installation d Befor...

Страница 29: ...top with HyperTerminal to do testing WIRING SCHEMATIC There are two unique wiring schematics one for replacing a VLUplus with a PRISM TM and one for a new installation of a Prism For a replacement ins...

Страница 30: ...X Glass Mount Combo X NO NO GPS Antenna Now that there are two antennas and one is a GPS antenna placement becomes critical The received signal levels for the GPS antenna from the satellites are very...

Страница 31: ...black box device NEVER mount the antenna vertically NEVER mount the antenna below the beltline of the vehicle NEVER mount the antenna in the trunk or engine compartment NEVER use silver metallic duct...

Страница 32: ...harness 37 pin connector to the adapter tighten the screws and then plug the adapter into the PRISM TM unit 8 Mount the PRISM TM to the chassis of the vehicle utilizing the mounting tabs Secure the u...

Страница 33: ...this could cause interference TIP Using a voltmeter make sure that the Voltage on the line you are connecting to does not drop to zero while the engine is started Cranking This line will be referred...

Страница 34: ...dered or crimped for reliability and connect the harness to the new PRISM TM 6 Connect the antenna s 7 Attach accessories as necessary 8 Remove the SIM chip from the old unit and place it in the new u...

Страница 35: ...Teletrac Inc Prism TM Information and Installation Guide 1622 0300 B1 3 18 04 35...

Страница 36: ...old unit will be removed from the vehicle a new one installed and the SIM from the old unit is placed in the new unit metal side down numbers visible 3 The VSR RMAs the old unit back to the warehouse...

Страница 37: ...ticker on the unit d Repackage assembled units and stickers e Return prepared equipment to Distribution 4 Distribution receives TOPSS order and pulls equipment 5 Distribution gives units back to QA Te...

Страница 38: ...Teletrac Inc Prism TM Information and Installation Guide 38 1622 0300 B1 3 18 04 Appendix These pages may be updated or added to at any time Please check the Ops Web for the most current information...

Страница 39: ...Teletrac Inc Prism TM Information and Installation Guide 1622 0300 B1 3 18 04 39...

Страница 40: ...t a few integrated circuits and so are becoming very economical And that makes the technology increasingly accessible The U S military was able to successfully deploy GPS for the first time during the...

Страница 41: ...and find it to be 11 000 miles Knowing that we re 11 000 miles from a particular satellite narrows down all the possible locations we could be in the whole universe to the surface of a sphere that is...

Страница 42: ...e satellites But how can you measure the distance to something that s floating around in space We do it by timing how long it takes for a signal sent from the satellite to arrive at our receiver THE B...

Страница 43: ...ndamental part of GPS Physically it s just a very complicated digital code or in other words a complicated sequence of on and off pulses as shown here The signal is so complicated that it almost looks...

Страница 44: ...the same thing EXTRA MEASUREMENT CURES TIMING OFFSET If everything were perfect i e if our receiver s clocks were perfect then all of our satellite ranges would intersect at a single point which is o...

Страница 45: ...ite into a very precise orbit according to the GPS master plan On the ground all GPS receivers have an almanac programmed into their computers that tells them where in the sky each satellite is moment...

Страница 46: ...en treating the calculations that go into GPS very abstractly as if the whole thing were happening in a vacuum But in the real world there are lots of things that can happen to a GPS signal that will...

Страница 47: ...on techniques to minimize this problem PROBLEMS AT THE SATELLITE Even though the satellites are very sophisticated they do account for some tiny errors in the system The atomic clocks they use are ver...

Страница 48: ...s to make sure that no hostile force or terrorist group can use GPS to make accurate weapons Basically the DoD introduces some noise into the satellite s clock data which in turn adds noise or inaccur...

Страница 49: ...Teletrac Inc Prism TM Information and Installation Guide 1622 0300 B1 3 18 04 49...

Страница 50: ...a features a 15 foot antenna cable and a SMB connector Specs Voltage 5 VDC supplied by unit Gain 18 dBm trought internal amplifier Polarization Omni directional loaded patch when on top of vehicle Mou...

Страница 51: ...Trunk Lip Mount and Though Hole Roof Mount Combo Antenna Part 335 0060 Self contained antenna that encloses all its components inside a single unit GPRS and GPS both share the same ground plane in or...

Страница 52: ...king PRISM TM in their vehicle can be mobile unit VLUplus Programming tools RF VLU Programming tools PRISM TM Programming tools VLU Terminal software VLU_PRO HyperTerminal SW part of std Windows Insta...

Страница 53: ...Teletrac Inc Prism TM Information and Installation Guide 1622 0300 B1 3 18 04 53...

Страница 54: ...This prevents mistakes in application setup and decreases the cost and time to install customer equipment Code Conservation Message codes are limited especially for inbound messages All messages canno...

Страница 55: ...ance etc There are two types of outbound message that are called FCM and Long FCM The FCM codes are allocated by the Teletrac Air Interface Protocol and are not the subject of this paper However this...

Страница 56: ...rved for future PEG usage i e StopToLong TimeForService etc 80 89 MDT Emergency Menu messages Per customer requirements 90 99 VLU Service and Emergency messages 90 96 reserved for PEG usage AfterHours...

Страница 57: ...trol Messages 1 3 Output 1 On Off Pulse 4 6 Output 2 On Off Pulse 7 10 PEG Control Message PEG operation control messages i e Disable Sleep Mode Reset Mileage etc 11 50 MDT OB Canned messages Customer...

Страница 58: ...for information and others for control We should try to group these three groups as best we can Unfortunately some messages can t fit neatly into standard grouping definitions due to either multiple u...

Страница 59: ...Teletrac Inc Prism TM Information and Installation Guide 1622 0300 B1 3 18 04 59...

Страница 60: ...s 9 Male Connector Located on the Unit White 6 18 19 Ignition Sense Standard Installations 1 2 5 7 8 9 15 13 14 22 28 32 37 White Green Black Green Yellow White Serial Port MDT Orange Input 1 Black Wh...

Страница 61: ...Teletrac Inc Prism TM Information and Installation Guide 1622 0300 B1 3 18 04 61...

Страница 62: ...n radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interferenc...

Страница 63: ...sm TM may encounter electrical interference that may affect its performance Avoid Body Contact with Device During Operation Do not operate the Prism TM in direct contact with your body Maintain minimu...

Страница 64: ...ronic equipment may not be shielded against the RF signals generated by the Prism TM Pacemakers The Health Industry Manufacturers Association recommends that a minimum separation of six 6 inches be ma...

Страница 65: ...dio Obey all signs and instructions Potentially Explosive Atmospheres Disable operation of the Prism TM by removing the battery pack prior to entering any area with a potentially explosive atmosphere...

Страница 66: ...ion Certificate The Prism TM product complies with the European Telecommunications Standards Institute Specifications ETS300 342 1 EMC for GSM 900MHZ and DCS 1800MHZ Radio Equipment and Systems EEC Th...

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