Linx Technologies OTX-XXX-LRMSA Long-Range Handheld Transmitter User Manual OTX xxx HH LR8 MS Manual 2 28 06

Linx Technologies Long-Range Handheld Transmitter OTX xxx HH LR8 MS Manual 2 28 06

Users Manual

DESCRIPTIONThe Linx OTX-***-HH-LR8-MS Long-RangeHandheld Transmitter is ideal for general-purpose remote control and commandapplications that require longer transmissiondistances. This unit has been pre-certified forFCC Part 15, Industry Canada, and EuropeanCE (433MHz only) compliance, reducing costsand time to market. Available in 315, 418(standard), or 433.92MHz, this small remotehas a transmission range of up to 3,000 feetwhen combined with the LR Series receiver.The transmitter unit can be configured with 1 to8 buttons and the keypad and labeling can bemodified to meet specific OEM customerrequirements. Ease of use and security aredramatically enhanced by the on-board MSSeries encoder, which allows instant creation ofup to 16,777,216 (224) unique addresseswithout cumbersome DIP switches or cut traces.When paired with a MS Series decoder,transmitter identity can be determined andbutton permissions established. The unit uses asingle 3V CR2032 lithium button cell.FEATURESFCC, Canada, and CE pre-certified 1 to 8 buttonsSmall packageCustomizable keypadAPPLICATIONS INCLUDEGeneral Remote Control Keyless EntryGarage / Gate OpenersLighting ControlCall SystemsHome / Industrial AutomationWire EliminationOEM ConfigurationsWith a one-time NRE andminimum order, Linx can configurethe keypad and label areas tomeet your specific requirements.Contact Linx for details.MS LONG-RANGE HANDHELD TRANSMITTER DATA GUIDE0.60"0.20"1.375"2.81"1.62"2.00"1.35"R 0.2"Revised 2/28/06Figure 1: Package DimensionsWIRELESS MADE SIMPLEPART # DESCRIPTIONOTX-***-HH-LR8-MS-xxx MS Long-Range TransmitterMDEV-***-HH-LR8-MS HH-LR8 Master Development System*** = 315, 418 (Standard), 433.92 MHzxxx = Color Leave blank for standard BlackORDERING INFORMATION
Page 3Page 2SETTING THE TRANSMITTER ADDRESSThe MS Long-Range HandheldTransmitter allows the selection of oneof 16,777,216 (224) unique addresses.All transmitters are supplied set to thesame address. To avoid contention withother units or to create uniquerelationships, the address can bechanged. This is accomplished by usinga paper clip or probe to press theCREATE_ADDR button on the boardthrough the bottom hole in the back ofthe case. When the button is depressed,a LED will light up in the MODE_INDwindow, indicating that the address is being created. The address will berandomized for as long as the button is held down. When the button is released,the randomized address is saved and the LED will begin flashing to indicate thatthe Control Permissions may now be set. Press the buttons that the transmitterwill have the authority to access. Press the CREATE_ADDR button with thepaper clip again or wait 17 seconds for it to time out. The address and ControlPermissions are now set. The decoder will need to learn the address before itwill accept any transmissions. Please see the Typical Applications section of thisdata guide or the MS Series Decoder Data Guide for details.OTX-***-HH-LR8-MS BUTTON ASSIGNMENTSThis diagram illustrates the relationship between the button locations andencoder data lines.D6 D7D4 D5D2 D3D0 D1Figure 3: OTX-***-HH-LR8-MS Button AssignmentsFigure 2: CREATE_ADDR Button AccessTHEORY OF OPERATIONThe OTX-***-HH-LR8-MS Long-Range Handheld transmitter combines the LRSeries transmitter and an antenna with an on-board MS Series encoder to forma simple, yet highly reliable RF remote-control transmitter. The LR Seriestransmitter is a low-cost, high-performance synthesized ASK / OOK transmitter.The transmitter’s synthesized architecture delivers outstanding stability andfrequency accuracy, while minimizing the effects of antenna port loading andmismatching. This reduces or eliminates frequency pulling, bit contraction, andother negative effects that are common to SAW-based transmitter architectures,providing a significantly higher level of performance and reliability.When a button is pressed on the transmitter, power is applied to the internalcircuitry and the encoder is enabled. The encoder then detects the logic statesof the button data lines. These states are formatted into a 2-word transmissioncycle that continues until the button is released. The encoder data is used tomodulate the transmitter that, through the antenna, conveys the data into freespace. Once data is received, a decoder IC is used to check the transmitter’saddress against an address saved in memory. If a match is confirmed, thedecoder’s outputs are set to replicate the transmitter’s button states. Theseoutputs can then be used to activate external circuitry required by theapplication.The transmitter is compatible with several Linx receiver products, including theLC and LR product families. For applications where range is critical, the LRSeries receiver is the best choice due to its outstanding sensitivity. When thetransmitter is combined with an LR Series receiver and the MS Series decoder,ranges of up to 1,000 feet are possible. Applications operating over shorterdistances will also benefit from the increased link reliability and superior noiseimmunity provided by the LR Series receiver.1. Characterized, but not testedNotesELECTRICAL SPECIFICATIONSPPaarraammeetteerrDDeessiiggnnaattiioonnMMiinn..TTyyppiiccaallMMaaxx..UUnniittssNNootteessPOWER SUPPLYOperating Voltage VCC 2.1 3.0 3.6 VDC –Supply Current ICC – 3.4 – mA –Power-Down Current IPDN – 5.0 – nA 1TRANSMITTER SECTIONTransmit Frequency Range: FCOTX-315-HH-LR8-MS – 315 – MHz –OTX-418-HH-LR8-MS – 418 – MHz –OTX-433-HH-LR8-MS – 433.92 – MHz –Center Frequency Accuracy – -50 – +50 kHz –ENVIRONMENTALOperating Temperature Range – -40 – +85 °C 1
Page 5Page 4Battery Warning LabelonINSIDE of battery cover433MHz version ONLYFCC ID: OJM-OTX-XXX-LRMSA FCC ID: OJM-OTX-XXX-LRMSA IC: 5840A-LRMSXXXA IC: 5840A-LRMSXXXA 418MHz 418MHz Figure 5: OTX-***-HH-LR8-MS AssemblyINSTRUCTION TO THE USERThis device complies with Part 15 of the FCC Rules.Operation of this device 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 interferencethat may cause undesired operation.This equipment has been tested and found to comply with the limits for a ClassB digital device, pursuant to Part 15 of the FCC Rules. These limits aredesigned to provide reasonable protection against harmful interference in aresidential installation. This equipment generates, uses and can radiate radiofrequency energy and, if not installed and used in accordance with theinstructions, may cause harmful interference to radio communications.However, there is no guarantee that interference will not occur in a particularinstallation. If this equipment does cause harmful interference to radio ortelevision reception, which can be determined by turning the equipment off andon, the user is encouraged to try to correct the interference by one or more ofthe following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which thereceiver is connected. Consult the dealer or an experienced radio/TV technician for help. This equipment has been certified to comply with the limits for a Class Bcomputing device, pursuant to FCC Rules. In order to maintain compliance withFCC regulations, shielded cables must be used with this equipment. Operationwith non-approved equipment or unshielded cables is likely to result ininterference to radio and TV reception. The user is cautioned that changes andmodifications made to the equipment without the approval of manufacturercould void the user’s authority to operate this equipment. Place the above statement in the instruction manual or insert card.COMPLIANCE REQUIREMENTSThe OTX-***-HH-LR8-MS has been pre-certified by Linx Technologies for FCCPart 15 and Industry Canada RSP-100 compliance. The 433.92MHz version hasalso been tested for CE compliance for use in the European Union. The 315MHzand 418MHz versions are not legal for use in Europe.LABELING / INSTRUCTION REQUIREMENTSThe OTX-***-HH-LR8-MS Long-Range Handheld transmitter has already beenlabeled in accordance with FCC, Industry Canada, and CE regulations in effectas of the date of this document. No further labeling of the unit is needed;however, it is necessary to include the following statement in the end product’sinstruction manual or insert card for FCC compliance. Industry Canada onlyrequires the shaded portion. EU does not require a statement.CONTENTION CONSIDERATIONSIt is important to understand that only one transmitter at a time can be activatedwithin a reception area. While the transmitted signal consists of encoded digitaldata, only one carrier of any particular frequency can occupy airspace withoutcontention at any given time. If two transmitters are activated in the same areaat the same time, then the signals will interfere with each other and the decoderwill not see a valid transmission, so it will not take any action.BATTERY REPLACEMENTThe remote unit utilizes a standard CR2032 lithiumbutton cell. In normal use, it will provide 1 to 2 yearsof operation. To replace the battery, remove theaccess cover by pressing down firmly on the labelarea and sliding it off. Once the unit is open, removethe battery by sliding it from beneath the holder.There may be the risk of explosion if the battery isreplaced by the wrong type. Replace it with the sametype of battery while observing the polarity shown inthe adjacent figure.ASSEMBLY DIAGRAMBattery Access+Figure 4: Battery Access
Page 6 Page 7VCCR1100kSW11SW22SW33SW445SW66SW778COM9SM1R2100KVCC1234U3VCCGNDGND1234U5DPAK-X21234U4DPAK-X2VCCVCCGNDGNDGNDS1LearnGNDD1LEDR3200GNDR4100KGNDR5100KR6100KR7100KR8100KR9100KR10100KR11100KVCCGNDR12100kGNDB1BAT-LINX2032ANT1ANTENNA1234U2DPAK-X2GND1DATA IN2GNDLADJ/VCC4RF OUT5GNDVCC7PDN8TX1TXM-XXX-LRGNDGNDGNDR13C1D6DATA_OUTMODE_INDSENDD1VCCD2D3D5U1C34.7uFC210pFR23100kVCC315MHz = 2kohm418MHz = 2kohm433MHz = 2kohmFigure 7: OTX-***-HH-LR8-MS SchematicTYPICAL APPLICATIONSThe signal sent by the MS Long-Range transmitter canbe received by the LC Series receiver module or the LRSeries receiver module. The outstanding sensitivity ofthe LR Series receiver offers the best range when usedwith the OEM transmitters. The receiver module is thenconnected directly to the MS Series decoder, which willdecode the transmitted signal.When a button is pressed on the transmitter, acorresponding line on the decoder will go high. This canthen be connected to external circuitry to performwhatever function is required by the application.The decoder must learn the transmitter’s addressbefore they can work together. This is done by takingthe LEARN line on the decoder high, typically with apushbutton switch. The MODE_IND line will start switching (if a LED is attached,this will cause it to flash) indicating that the decoder is in Learn Mode. Press anyof the buttons on the transmitter to initiate a transmission. Take the LEARN linehigh again to exit Learn Mode and the system is ready for use. The figure belowshows a schematic for a typical application.The MS Long-Range transmitteris set to 9,600bps, soSEL_BAUD0 should be tied highand SEL_BAUD1 tied low. The decoder has several uniquefeatures, such as Latch Mode,Receiver Control, and TX_ID.If the LATCH line is tied to VCC,the outputs will go high on thefirst transmission, then low onthe second. Figure 6 shows ittied low, so the outputs will bemomentary (high for as long as asignal is received which instructsthe decoder to make them high).The RX_CNTL line can beconnected to the PDN line of thereceiver and the decoder willactivate the receiver with a 10%duty cycle This greatly reducesthe average current consumptionof the system. The adjacent figure shows it tied to ground, but to use this feature,connect the RX_CNTL line of the decoder directly to the receiver’s PDN line.The TX_ID line will output a number associated with the originating transmitter /encoder. Application Note AN-00156 shows how to use this feature.Data guides for the receivers, the MS encoder, and the MS decoder can befound on the Linx Technologies website, www.linxtechnologies.com.GNDGNDVCCNC1NC2NC3GND4VCC5PDN6RSSI7DATA8NC9NC10NC11NC12NC13NC14GND15ANT16RXM-LR220D6D7SEL_BAUD0SEL_BAUD1GNDGNDLATCHRX_CNTLTX_IDMODE_INDD5D4D3D2VCCVCCD1D0DATA_INLEARN1234567891011121314151617181920LICAL-DEC-MS001VCCGNDGNDVCCFigure 6: LR Receiver and MS Decoder SchematicRXM-***-LRLICAL-DEC-MS001
LINX TECHNOLOGIES, INC.575 S.E. ASHLEY PLACEGRANTS PASS, OR 97526PHONE: (541) 471-6256FAX: (541) 471-6251www.linxtechnologies.comU.S. CORPORATE HEADQUARTERSLinx Technologies is continually striving to improve the quality and function of its products. Forthis reason, we reserve the right to make changes without notice. The information contained inthis Data Guide is believed to be accurate as of the time of publication. Specifications are basedon representative lot samples. Values may vary from lot to lot and are not guaranteed. LinxTechnologies makes no guarantee, warranty, or representation regarding the suitability orlegality of any product for use in a specific application. None of these devices is intended foruse in applications of a critical nature where the safety of life or property is at risk. The userassumes full liability for the use of product in such applications. Under no conditions will LinxTechnologies be responsible for losses arising from the use or failure of the device in anyapplication, other than the repair, replacement, or refund limited to the original product purchaseprice. Some devices described in this publication are patented. Under no circumstances shallany user be conveyed any license or right to the use or ownership of these patents. Disclaimer© 2006 by Linx Technologies, Inc. The stylizedLinx logo, Linx, and “Wireless made Simple”are the trademarks of Linx Technologies, Inc. Printed in U.S.A.WIRELESS MADE SIMPLE

Navigation menu