Linx Technologies CMD-HHCP-XXXA Compact Handheld Transmitter User Manual CMD HHCP Manual 4 29 05

Linx Technologies Compact Handheld Transmitter CMD HHCP Manual 4 29 05

Users Manual

DESCRIPTIONThe Linx CMD-HHCP-xxx-*** RemoteCommand Unit is ideal for general-purposeremote control and command applications.This unit has been pre-certified for FCC Part15, Industry Canada, and CE (433MHz only)compliance, reducing development costs andtime to market. Available in 315, 418(standard), or 433.92MHz, this compactremote has a transmission range of up to1,000 feet when combined with the LR Seriesreceiver. The transmitter unit can beconfigured with 1 to 8 buttons and the keypadand labeling can be modified to meet specificOEM customer requirements. Selectableaddressing provides security and allows thecreation of up to 1024 distinct transmitter-receiver relationships. The address can beeasily changed via an externally accessibleDIP switch. The transmission can bedecoded using a matching Linx FunctionModule, KH Series receiver/decoder, or aLinx LC or LR Series receiver paired with adecoder IC or microcontroller. The unit usesa single 3V CR-2032 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 and minimumorder, Linx can configure the keypadand label areas to meet your specificrequirements. Contact Linx for details.OEM COMPACT HANDHELD TRANSMITTER DATA GUIDE2.00"1.35"R 0.2"2.81"1.62" 0.60"0.20"Revised 4/29/05PART NUMBER DESCRIPTIONCMD-HHCP-xxx-*** 8-Button Handheld TransmitterEVAL-xxx-HHCP HHCP Evaluation Systemxxx = 315, 418 (Standard), 433.92 MHz*** = Color Leave blank for standard BlackWHT = White CGY= Gray CBL = BlueCRE = Red CPU = PurpleORDERING INFORMATIONFigure 1: Physical DimensionsWIRELESS MADE SIMPLE
Page 3SETTING THE TRANSMITTER ADDRESSThe Compact Hand Held transmitterallows the selection of one of 1024unique addresses. All transmitters aresupplied set to the same address. Toavoid contention with other units or tocreate unique relationships, the addresscan be changed. This is accomplishedusing internal DIP switches as shown.The switches are accessed by removingthe DIP switch access cover on the backof the transmitter.If the switch is on, the address line isconnected to ground, otherwise it is floating. The receiver's address must matchexactly in order for the units to communicate. Application Note AN00300describes in detail how to set the address to match any of the receivers offeredby Linx. This note can be found in the Support section of the Linx web site,www.linxtechnologies.com.CMD-HHCP BUTTON ASSIGNMENTSThis diagram illustrates the relationship between the button locations andencoder/decoder data lines.D7 D6D5 D4D3 D2D1 D0Page 2OFF ONA0 = 1A1 = 2A2 = 3A3 = 4A4 = 5A5 = 6A6 = 7A7 = 8A8 = 9A9 = 10Figure 2: DIP Switch AssignmentsFigure 3: CMD-HHCP-xxx Button AssignmentsELECTRICAL SPECIFICATIONSPPaarraammeetteerrDDeessiiggnnaattiioonnMMiinn..TTyyppiiccaallMMaaxx..UUnniittssNNootteessPOWER SUPPLYOperating Voltage VCC 2.1 3.0 3.6 VDC –Supply Current ICC –3.4 –mA –Power-down Current IPDN –50 –nA 1TRANSMITTER SECTIONTransmit Frequency Range FCCMD-HHLR-315 –315 –MHz –CMD-HHLR-418 –418 –MHz –CMD-HHLR-433 – 433.92 – MHz –Center Frequency Accuracy –-50 –+50 kHz –ENVIRONMENTALOperating Temperature Range – -40 – +85 °C11. Characterized, but not tested.NotesTHEORY OF OPERATIONThe CMD-HHCP-xxx Remote Command Unit combines the LR Seriestransmitter with an internal Splatch Series antenna with an on-board HoltekHT640 encoder IC to form a simple, yet highly reliable, RF remote-controltransmitter. The LR transmitter is a low-cost, high-performance synthesizedASK/OOK transmitter. The transmitter’s synthesized architecture deliversoutstanding stability and frequency accuracy while minimizing the effects ofantenna port loading and mismatching. This reduces or eliminates frequencypulling, bit contraction, and other negative effects that are common to SAW-based transmitter architectures, providing a significantly higher level ofperformance and reliability.When a button is pressed on the remote unit, power is applied to the internalcircuitry and the encoder IC is enabled. The encoder then detects the logic statesof the address lines and button data lines. These states are formatted into athree-word transmission cycle that continues until the button is released. Theencoder data is used to modulate the transmitter, which, through the antenna,conveys the data into free space. On the receiver side, a decoder IC or custommicrocontroller is used to check the transmitter's address bits against theaddress settings of the receiving device. If a match is confirmed, the decoder’soutputs are set to replicate the transmitter’s button states. These outputs canthen be used to activate external circuitry required by the application.The transmitter is compatible with several Linx receiver products, including theLC, LR, KH, and OEM product families. For applications where range is critical,the LR Series receiver is the best choice due to its outstanding sensitivity. Whenthe transmitter is combined with an LR Series receiver and the HT658 decoderchip, ranges up to 1000 feet are possible. Applications operating over shorterdistances will also benefit from the increased link reliability and superior noiseimmunity provided by the LR Series receiver.
Page 5Page 4INSTRUCTION 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 CMD-HHCP-xxx has been pre-certified by Linx Technologies for FCC Part15 and Industry Canada RSP-100 compliance. The 433.92MHz version has alsobeen tested for CE compliance for use in the European Union. The 315MHz and418MHz versions are not legal for use in Europe.LABELING/INSTRUCTION REQUIREMENTSThe CMD-HHCP-xxx Remote Command Unit has already been labeled inaccordance with FCC, Industry Canada, and CE regulations in effect as of thedate of this document. No further labeling of the unit is needed; however, it isnecessary to include the following statement in the end product’s instructionmanual or insert card.Figure 5: CMD-HHCP-xxx AssemblyCONTENTION 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 CR-2032 LithiumButton Cell. In normal use it will provide 1 to 2 years ofoperation. To replace the battery, remove the accesscover by pressing down firmly on the label area andsliding it off. Once the unit is open, remove the batteryby sliding it from beneath the holder. Replace it withthe same type of battery while observing the polarityshown in the adjacent figure.ASSEMBLY DIAGRAMBattery Access+Figure 4: Battery Access
Page 6VCCR1390KSW1 1SW2 2SW3 3SW4 4SW5 5SW6 6SW7 7SW8 8COM 9SM1RFIN1GND2GND3GND4GND5GND6ANT1SPLATCH ANTENNAR2100KVCC1234U3DPAK-X21234U2DPAK-X21234U4DPAK-X21234U5DPAK-X2D11D22D33D44D55D66D77DOUT8TE9OSC110OSC211GND12 A0 13A1 14A2 15A3 16A4 17A5 18A6 19A7 20A8 21A922D0 23VCC 24U1HT-6401232019184561716157891413121011S1SW-USMT-10GNDGNDGNDGNDVCCGNDR3Set For FCCComplianceGND1DATA IN2GND3IADJ/VCC4RF OUT 5GND 6VCC 7PDN 8TX1LRTXGNDGNDVCCVCCGNDB1BAT-LINX2032Figure 7: CMD-HHCP-xxx SchematicPage 7RECEIVERSThere are four options for receivers within the Linxproduct line. The first option is to use one of the OEMFunction Modules, such as the Relay Module or the ACWall Module. These items are also pre-certified andcan be immediately included in a product.The other options are to use one of the Linx receivermodules. The signal sent by the Compact Hand Heldtransmitter can be received by the LC Series receivermodule or, for longer range, the LR Series receivermodule. These modules can be connected to theHoltek HT658 decoder to decode the signal or a custommicrocontroller can be programmed to decode it andtake specific action.The KH Series offers a slightly simpler solution bycombining the LC Series receiver and the HT658decoder in a single package.The basic operation for the system is that when abutton is pressed on the transmitter, a correspondingpin on the decoder will go high (as long as theaddresses match). This can then be connected towhatever circuitry is required by the applicationApplication Note AN00300 discusses in detail how toset the addresses on all of the units. Data guides for allof the receivers, the HT640 encoder, and the HT658decoder can be found on the Linx Technologies website, www.linxtechnologies.com.TYPICAL APPLICATIONSThe outstanding sensitivity of the LRSeries receiver offers the best rangewhen used with the Hand Heldtransmitter. When using the LRSeries receiver, the Holtek HT658decoder chip should be used todecode the received signal. Thisdecoder has ten address lines thatmust match the transmitter addresslines. A DIP switch is commonlyused to set these, but they can alsobe hardwired. If the address linesmatch, when a button on thetransmitter is pressed acorresponding data line on thedecoder (D0-D7) will go high. Thesedata lines can then be connected toexternal circuitry to performwhatever function is required by theapplication.GNDR1390kGNDGNDVCCVCCD11D22D33D44D55D66D77VT8DIN9OSC110OSC211GND12A013A114A215A316A417A518A619A720A821A922D023VCC24HT658NC1NC2NC3GND4VCC5PDN6RSSI7DATA8NC9NC10NC11NC12NC13NC14GND15ANT16RXM-XXX-LR-SGNDFigure 6: LR Receiver and HT658 Schematic
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 Sheet 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. DisclaimerWIRELESS MADE SIMPLE© 2005 by Linx Technologies, Inc. The stylizedLinx logo, Linx, and “Wireless Made Simple”are the trademarks of Linx Technologies, Inc. Printed in U.S.A.

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