Zebra Technologies TFF-1000-00AA Spread Spectrum/Non-Broadcast Tx User Manual users manual

Zebra Technologies Corporation Spread Spectrum/Non-Broadcast Tx users manual

users manual

WiData FireflyReal Time Locating System TagUser’s GuideTFF-1000-00AAMarch 1999WiData Corporation2855 Bowers AvenueSanta Clara, CA 95051408-845-8500
FCC RequirementsThis device must operate in compliance with Federal Communications Commission (FCC) Rules and Regulations Parts15.Model: TFF-1000-00AA This device complies with Part 15 of the FCC Rules and RSS-210 of Industry Canada. 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 which may cause undesired operation. FCC ID: NSQTFF-1000-00AA CANADIAN ID:RF NoticeAny changes or modifications to WiData Corporation equipment not expressly approved by WiData Corporation couldvoid the user’s authority to operate the equipment.
WiData Firefly Real Time Location System Tag User’s GuideIntroductionWiData Firefly SystemThe Firefly RF Location System is designed to permit users to determine the position of tagged assets in both indoor andoutdoor facilities such as factories and freight yards. The system locates tagged assets by a process involving redundanttriangulation. Each tag autonomously emits a 2.4 GHz direct sequence spread spectrum (DSSS) radio signal atpredetermined blink rate. Each tag’s blink rate is randomized around its predetermined value to minimize the number ofcollisions between transmissions made by different tags. The signal emitted by the tag is received by a minimum of fourDSSS receivers each of which are capable of decoding that tag’s transmission. A typical transmission contains a preamblewhich is used to synchronize the receiver, the tag’s serial number which identifies the tag, a status word which monitorsvarious tag functions, data stored in the tag’s memory and finally a CRC used to assure that the tag’s message is correct asreceived.Tag configuration parameters such as blink rate and user data to be stored in memory are loaded into the tag using adevice called a Hand Held Communicator (HHC). The HHC consists of a Type II PCMCIA card inserted into a laptop orhandheld PC. The PCMCIA card contains a short range (2 to 10 feet) radio transmitter and receiver which communicateswith a very low power transmitter and receiver contained in each tag. This short range communication link operates at 2.4GHz. The modulation scheme used by the PCMCIA card was chosen to minimize power consumption by the batteryoperated tag receiver. The DSSS transmitter allows the system to locate users of the HHC anywhere in the service areacovered by the system.The principal components of the system are shown in the following figure.
WiData Firefly Real Time Locating System Tag User’s GuideFigure 1Firefly SystemBlock DiagramReaderTag withGUIClientGUIClientRFClientandFront EndProcessorReaderReaderReaderHPCComunctr BarPCMCIA Scanner2-way OOKmodulated RF1-way spreadspectrum RF1-way spreadspectrum RF forsending tag IDassociation withbar code readDimensions:* reader - reader = 200 ft* tag - reader = 200 ft* tag - interrogator = 1-20 ft* WLAN - WLAN = 200 - 500 ft(Blink S/N & telem)(Who?, Where?, Memory)memoryWiDataServerIndigenousNetwork(s)FireFlyDBMSIndigenousMISDBMSCodeLaser bar code scanner
WiData Firefly Real Time Locating System Tag User’s GuideInstructionsWiData Model TFF-1000-00AA TagThe WiData Model TFF-1000-00AA Tag is a compact battery operated radio frequency device which is a component of the WiDataFirefly Real Time Location System. The Firefly System is designed to track and locate items tagged with Model TFF-1000-00AAtags. Each tag emits short, low power bursts of widely spread spectrum radio energy. These bursts are received by the Firefly SystemInfrastructure. The time difference of arrival of bursts at each Infrastructure receiver are noted and the position of tagged items arecomputed by multiple triangulation. Each burst contains the tag’s unique identification code and a status data word that providesinformation on the tag’s configuration, battery state and other data. These data are entered into tags using the WiData Model HPC-2000-00AA Hand Held Communicator. The tag’s identification number, status data word and it’s location are provided to the user bythe Infrastructure. Multiple tags may be present in typical installations allowing a large number of items to be tracked and located inreal time. The tags are packaged in sealed cases designed to operate in both indoor and outdoor environments. The tags have selfcontained antennas and have no user replaceable parts or adjustments.Battery life under typical conditions is in excess of 5 years.Tag Installation and ActivationTags are shipped with all radio emitters deactivated. Prior to installing a tag on an item to be tracked the tag must be activated. This isdone using The WiData Model HPC-2000-00AA Hand Held Communicator. The Communicator is used to configure and activate thetag, and to confirm that the tag is properly configured and operational. The detailed procedure for tag activation is covered in theHPC-2000-00AA Communicator Users Manual.The tag is attached using appropriate mounting hardware kits.
OperationWiData Firefly Real Time Location System Tag User’s GuideOperationConfiguration and SetupThe WiData Firefly Real Time Locating System Tag does not require any special configuration or setup to operate withthe Firefly System.OperationThe WiData Firefly Real Time Locating System Tag is controlled and activated using the Hand Held Communicator.Most applications allow the user perform one or more of the following functions:• Read data from tag memory• Write data to tag memory• Turn tag DSSS blink on and set the blink rate• Turn tag DSSS blink off• List Ids of tags within the OOK/FSK range of the Hand Held Communicator• Locate a specific tag by report the signal tag’s OOK/FSK signal strength• Upload data to the Firefly Data Base using DSSS transmit mode.All Hand Held Communicator application software is pre-configured to individual system requirements before systeminstallation. All available functions are menu selectable through easy on screen instructions.
SpecificationsWiData Firefly Real Time Location System Tag User’s GuideSpecificationsTagDimensions 2.3 x 2.5 x 1.1 inches58 x 64 x 25 mmWeight 2 ozOperation Temperature -25 to +60 °CStorage Temperature -20 to +70 °CHumidity 100% condensingDrop 4 feet to concreteDSSS RF PerformanceFrequency 2441.750 MHzSpreading (PN Code) 511 chips/bitChip Rate 30.521875 MHzPower <5mWRange (to DSSS reader) greater than 200 feetOOK/FSK RF PerformanceFrequency 2446.520 MHzOOK/FSK Rates 375 kHz (Logic 0)535 kHz (Logic 1)Power <1mWRange (to communicator) 0 to 6 feet

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