WIRELESS MADE SIMPLE ® OEM LONG-RANGE HANDHELD TRANSMITTER DATA GUIDE DESCRIPTION The Linx CMD-HHLR-***-xxx Long-Range Handheld transmitter is ideal for generalpurpose remote control and command applications that require longer transmission distances. As a part of our Holtek encoderbased OEM family, it has been pre-certified for FCC Part 15, Industry Canada, and European CE (433MHz only) compliance, reducing costs and time to market. Available in 315, 418 (standard), or 433.92MHz, this small remote has a transmission range of up to 1,000 feet when combined with the LR Series receiver. The transmitter unit can be configured with 1 to 8 buttons and the keypad and labeling can be modified to meet specific OEM customer requirements. Selectable addressing provides security and allows the creation of up to 1,024 distinct transmitter-receiver relationships. The address can be easily changed via an externally accessible DIP switch. The transmission can be decoded using a matching Linx Function Module, KH Series receiver / decoder, or a Linx LR or LT Series receiver paired with a decoder IC or microcontroller. The unit uses a single 3V CR2032 lithium button cell. 1.375" R 0.2" 2.00" 2.81" 1.35" 1.62" 2 0.20" 0.60" OFF ON 1 ON 3 D OFF OFF ON C B Poo l ON 4 A Ligh ts O N Spa ON ON FASCO OEM Configurations FEATURES FCC, Canada, and CE pre-certified 1 to 8 buttons Small package Customizable keypad APPLICATIONS INCLUDE General Remote Control Keyless Entry Garage / Gate Openers Lighting Control Call Systems Home / Industrial Automation With a one-time NRE and minimum order, Linx can configure the keypad and label areas to meet your specific requirements. Contact Linx for details. ORDERING INFORMATION PART # DESCRIPTION CMD-HHLR-***-xxx Long-Range Handheld Transmitter EVAL-***-HHLR HHLR Evaluation Kit *** = 315, 418 (Standard), 433.92 MHz xxx = Custom color Leave blank for standard Black Add -MD to the end of the part number for Metal Dome buttons Revised 1/28/08 ELECTRICAL SPECIFICATIONS Parameter Designation Min. POWER SUPPLY Operating Voltage VCC Supply Current ICC Power-Down Current TRANSMITTER SECTION Transmit Frequency Range: IPDN SETTING THE TRANSMITTER ADDRESS Typical Max. Units Notes 2.1 3.0 3.6 VDC – – 3.4 – mA – – 5.0 – nA 1 FC CMD-HHLR-315 – 315 – MHz – CMD-HHLR-418 – 418 – MHz – CMD-HHLR-433 – 433.92 – MHz – Center Frequency Accuracy – -50 – +50 kHz – ENVIRONMENTAL Operating Temperature Range – -40 – +85 °C 1 Notes 1. Characterized, but not tested THEORY OF OPERATION The CMD-HHLR-*** Long-Range Handheld transmitter combines the LR Series transmitter and an antenna with an on-board Holtek HT640 encoder IC to form a simple, yet highly reliable, RF remote-control transmitter. The LR Series transmitter is a low-cost, high-performance synthesized ASK / OOK transmitter. The transmitter’s synthesized architecture delivers outstanding stability and frequency accuracy, while minimizing the effects of antenna port loading and mismatching. This reduces or eliminates frequency pulling, bit contraction, and other 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 internal circuitry and the encoder IC is enabled. The encoder detects the logic states of the address lines and button data lines. These states are formatted into a threeword transmission cycle that continues until the button is released. The encoder 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 custom microcontroller is used to check the transmitter’s address bits against the address settings of the receiving device. If a match is confirmed, the decoder’s outputs are set to replicate the transmitter’s button states. These outputs can then be used to activate external circuitry required by the application. The transmitter is compatible with several Linx receiver products, including the LR, KH2, LT, and OEM product families. For applications where range is critical, the LR Series receiver is the best choice due to its outstanding sensitivity. When the transmitter is combined with an LR Series receiver and the HT658 decoder chip, ranges of up to 1,000 feet are possible. Applications operating over shorter distances will also benefit from the increased link reliability and superior noise immunity provided by the LR Series receiver. The Long-Range Handheld transmitter allows the selection of one of 1,024 unique addresses. All transmitters are supplied set to the same address. To avoid contention with other units or to create unique relationships, the address can be changed. This is accomplished using internal DIP switches as shown. The switches are accessed by removing the DIP switch access cover on the back of the transmitter. OFF ON A0 = 1 A1 = 2 A2 = 3 A3 = 4 A4 = 5 A5 = 6 A6 = 7 A7 = 8 A8 = 9 A9 = 10 If the switch is on, the address line is Figure 2: DIP Switch Assignments connected to ground, otherwise it is floating. The receiver’s address must match exactly in order for the units to communicate. Application Note AN-00300 describes in detail how to set the address to match any of the receivers offered by Linx. This note can be found in the Support section of the Linx web site, www.linxtechnologies.com. CMD-HHLR BUTTON ASSIGNMENTS This diagram illustrates the relationship between the button locations and encoder data lines. D7 D6 D5 D4 D3 D2 D1 D0 Figure 3: CMD-HHLR-*** Button Assignments Page 2 Page 3 CONTENTION CONSIDERATIONS COMPLIANCE REQUIREMENTS It is important to understand that only one transmitter at a time can be activated within a reception area. While the transmitted signal consists of encoded digital data, only one carrier of any particular frequency can occupy airspace without contention at any given time. If two transmitters are activated in the same area at the same time, then the signals will interfere with each other and the decoder will not see a valid transmission, so it will not take any action. There may be the risk of explosion if the battery is replaced by the wrong type. Replace it with the same type of battery while observing the polarity shown in the adjacent figure. ASSEMBLY DIAGRAM LABELING / INSTRUCTION REQUIREMENTS The CMD-HHLR-*** Long-Range Handheld transmitter has already been labeled in accordance with FCC, Industry Canada, and CE regulations in effect as 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’s instruction manual or insert card for FCC compliance. Industry Canada only requires the shaded portion. EU does not require a statement. BATTERY REPLACEMENT The remote unit utilizes a standard CR2032 lithium button cell. In normal use, it will provide 1 to 2 years of operation. To replace the battery, remove the access cover by pressing down firmly on the label area and sliding it off. Once the unit is open, remove the battery by sliding it from beneath the holder. Replace it with the same type of battery while observing the polarity shown in the adjacent figure. The CMD-HHLR-*** has been pre-certified by Linx Technologies for FCC Part 15 and Industry Canada RSP-100 compliance. The 433.92MHz version has also been tested for CE compliance for use in the European Union. The 315MHz and 418MHz versions are not legal for use in Europe. Battery Access INSTRUCTION TO THE USER + This device complies with Part 15 of the FCC Rules. Operation of this device is subject to the following two conditions: Figure 4: Battery Access (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can 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 interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the 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 the receiver 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 B computing device, pursuant to FCC Rules. In order to maintain compliance with FCC regulations, shielded cables must be used with this equipment. Operation with non-approved equipment or unshielded cables is likely to result in interference to radio and TV reception. The user is cautioned that changes and modifications made to the equipment without the approval of manufacturer could void the user’s authority to operate this equipment. Figure 5: CMD-HHLR-*** Assembly Place the above statement in the instruction manual or insert card. Page 4 Page 5 Page 6 GND 16 15 14 13 12 11 10 9 GND 5 6 VCC 7 IADJ/VCC RF OUT Set For FCC Compliance 4 LRTX GND GND GND R3 3 VCC DATA IN GND 2 TX1 GND DPAK-X2 4 U5 1 2 DPAK-X2 3 4 3 U4 1 2 1 4 U3 3 DPAK-X2 2 DPAK-X2 1 R2 100K ANT GND NC NC NC NC NC NC 4 U2 2 3 TYPICAL APPLICATIONS VCC 1 VCC Application Note AN-00300 discusses in detail how to set the addresses on all of the units. Data guides for all of the receivers, the HT640 encoder, and the HT658 decoder can be found on the Linx Technologies website, www.linxtechnologies.com. NC NC NC GND VCC PDN RSSI DATA GND GND R1 390K When a button is pressed on the transmitter, a corresponding line on the decoder will go high (as long as the addresses match). This can then be connected to whatever circuitry is required by the application. 1 2 3 4 5 6 7 8 HT-640 VCC D0 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 D1 D2 D3 D4 D5 D6 D7 DOUT TE OSC1 OSC2 GND U1 1 2 3 4 5 6 7 8 9 10 11 12 The KH2 Series offers a slightly simpler solution by combining the LR Series receiver and the HT658 decoder in a single package. GND RXM-LR VCC GND HT658 GND VCC GND B1 BAT-LINX2032 24 23 22 21 20 19 18 17 16 15 14 13 1 2 3 4 5 6 7 8 9 VCC D0 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8 COM D1 D2 D3 D4 D5 D6 D7 VT DIN OSC1 OSC2 GND SM1 R1 390k 1 2 3 4 5 6 7 8 9 10 11 12 VCC The outstanding sensitivity of the LR Series receiver offers the best range when used with the Handheld transmitter. When using the LR Series receiver, the Holtek HT658 decoder chip should be used to decode the received signal. This decoder has ten address lines that must match the transmitter address lines. A DIP switch is commonly used to set these, but they can also be hardwired. If the address lines match, when a button on the transmitter is pressed a corresponding data line on the decoder (D0-D7) will go high. These data lines can then be connected to external circuitry to perform whatever function is required by the application. PDN 24 23 22 21 20 19 18 17 16 15 14 13 8 VCC 11 12 13 14 15 16 17 18 19 20 The other options are to use one of the Linx receiver modules. The signal sent by the Long-Range Handheld transmitter can be received by the LR Series receiver module or the LT Series transcever module. These modules can be connected to the Holtek HT658 decoder to decode the signal, or a custom microcontroller can be programmed to decode it and take specific action. SW-USMT-10 S1 10 9 8 7 6 5 4 3 2 1 There are four options for receivers within the Linx product line. The first option is to use one of the OEM Function Modules, such as the Relay Module or the AC Wall Module. These items are also pre-certified and can be immediately included in a product. ANT1 ANTENNA GND RECEIVERS Figure 6: LR Receiver and HT658 Schematic Figure 7: CMD-HHLR-*** Schematic Page 7 WIRELESS MADE SIMPLE ® U.S. CORPORATE HEADQUARTERS LINX TECHNOLOGIES, INC. 159 ORT LANE MERLIN, OR 97532 PHONE: (541) 471-6256 FAX: (541) 471-6251 www.linxtechnologies.com Disclaimer Linx Technologies is continually striving to improve the quality and function of its products. For this reason, we reserve the right to make changes to our products without notice. The information contained in this Overview Guide is believed to be accurate as of the time of publication. Specifications are based on representative lot samples. Values may vary from lot-to-lot and are not guaranteed. "Typical" parameters can and do vary over lots and application. Linx Technologies makes no guarantee, warranty, or representation regarding the suitability of any product for use in any specific application. 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