WIRELESS MADE SIMPLE 1.35"
2.00"
1.62"
2.81"
0.20"
R 0.2"
1.375"
OEM LONG RANGE HANDHELD TRANSMITTER DATA GUIDE DESCRIPTION The Linx CMD-HHLR-xxx-*** Remote Command Unit is ideal for general-purpose remote control and command applications requiring longer transmission distances. This unit has been pre-certified for FCC Part 15, Industry Canada, and CE (433MHz only) compliance, reducing costs and time to market. Available in 315, 418 (standard), or 433.92MHz, this compact 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 1024 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 LC or LR Series receiver paired with a decoder IC or microcontroller. The unit uses a single 3V CR-
2032 lithium button cell. 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
Wire Elimination PART NUMBER CMD-HHLR-xxx-***
EVAL-xxx-HHLR xxx = 315, 418 (Standard), 433.92 MHz
*** = Color Leave blank for standard Black WHT = White CRE = Red OEM Configurations 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. DESCRIPTION 8-Button Handheld Transmitter HHLR Evaluation System ORDERING INFORMATION Figure 1: Physical Dimensions CGY= Gray CPU = Purple CBL = Blue 0.60"
Revised 4/27/05 ELECTRICAL SPECIFICATIONS SETTING THE TRANSMITTER ADDRESS PPaarraammeetteerr POWER SUPPLY Operating Voltage Supply Current Power-down Current TRANSMITTER SECTION Transmit Frequency Range CMD-HHLR-315 CMD-HHLR-418 CMD-HHLR-433 Center Frequency Accuracy ENVIRONMENTAL Operating Temperature Range Notes 1. Characterized, but not tested. DDeessiiggnnaattiioonn MMiinn.. TTyyppiiccaall MMaaxx.. UUnniittss NNootteess VCC ICC IPDN FC 2.1
-50
-40 3.0 3.4 50 315 418 433.92 3.6
+50
+85 VDC mA nA MHz MHz MHz kHz C 1 1 THEORY OF OPERATION The CMD-HHLR-xxx Remote Command Unit 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 transmitter is a low-cost, high-performance synthesized ASK/OOK transmitter. The transmitters 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 remote unit, power is applied to the internal circuitry and the encoder IC is enabled. The encoder then detects the logic states of the address lines and button data lines. These states are formatted into a three-word 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 decoders outputs are set to replicate the transmitters 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 LC, 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. When the transmitter is combined with an LR Series receiver and the HT658 decoder chip, ranges up to 1000 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 Hand Held transmitter allows the selection of one of 1024 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. If the switch is on, the address line is connected to ground, otherwise it is floating. The receiver's address must match exactly in order for the units to communicate. Application Note AN00300 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. Figure 2: DIP Switch Assignments A0 = 1 A1 = 2 A2 = 3 A3 = 4 A4 = 5 A5 = 6 A6 = 7 A7 = 8 A8 = 9 A9 = 10 OFF ON CMD-HHLR BUTTON ASSIGNMENTS This diagram illustrates the relationship between the button locations and encoder/decoder data lines. D7 D5 D3 D1 D6 D4 D2 D0 Page 2 Page 5 Figure 3: CMD-HHLR-xxx Button Assignments 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. BATTERY REPLACEMENT The remote unit utilizes a standard CR-2032 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. ASSEMBLY DIAGRAM Battery Access
Figure 4: Battery Access Figure 5: CMD-HHLR-xxx Assembly Page 4 The CMD-HHLR-xxx 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. LABELING/INSTRUCTION REQUIREMENTS The CMD-HHLR-xxx Remote Command Unit 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 products instruction manual or insert card. 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:
(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. Place the above statement in the instruction manual or insert card. Page 5 RECEIVERS 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. The other options are to use one of the Linx receiver modules. The signal sent by the Long Range Hand Held transmitter can be received by the LC Series receiver module or, for longer range, the LR Series receiver 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. The KH Series offers a slightly simpler solution by combining the LC Series receiver and the HT658 decoder in a single package. The basic operation for the system is that when a button is pressed on the transmitter, a corresponding pin 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 Application Note AN00300 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 web site, www.linxtechnologies.com. TYPICAL APPLICATIONS 0 1 789 456 123 1 S C C V 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 0 2 4 2 3 2 2 2 1 2 0 2 9 1 8 1 7 1 6 1 5 1 4 1 3 1 0 D 9 A 8 A 7 A 6 A 5 A 4 A 3 A 2 A 1 A 0 A C C V 1 D 2 D 3 D 4 D 5 D 6 D 7 D E T T U O D 1 C S O 2 C S O D N G 1 U 1 2 3 4 5 6 7 8 9 0 1 1 1 2 1 D N G 0 1
T M S U W S
0 4 6
T H A N N E T N A 1 T N A C C V D N G 8 7 6 5 N D P C C V D N G N I A T A D D N G D N G 1 X T T U O F R C C V
J D A I X T R L D N G K 0 9 3 1 R 1 2 3 4 D N G D N G 3 R C C F r o F t e S C C V e c n a i l p m o C K 0 0 1 2 R D N G 12 12 12 12 2 U
2 X K A P D 3 U
2 X K A P D 4 U
2 X K A P D 5 U
2 X K A P D 3 4 3 4 3 4 3 4 The outstanding sensitivity of the LR Series receiver offers the best range when used with the Hand Held 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 is required by the application. function Page 6 VCC GND 1 2 3 4 5 6 7 8 NC NC NC GND VCC PDN RSSI DATA RXM-XXX-LR-S 16 15 14 13 12 11 10 9 ANT GND NC NC NC NC NC NC GND VCC 1 2 3 4 5 6 7 8 9 10 11 12 D1 D2 D3 D4 D5 D6 D7 VT DIN OSC1 OSC2 GND 24 23 22 21 20 19 18 17 16 15 14 13 VCC D0 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 GND HT658 GND R1 390k C C V 2 3 0 2 X N L
T A B I 1 B C C V D N G 1 2 3 4 5 6 7 8 9 1 W S 2 W S 3 W S 4 W S 5 W S 6 W S 7 W S 8 W S M O C 1 M S Figure 6: LR Receiver and HT658 Schematic Figure 6: CMD-HHLR-xxx Schematic Page 7 WIRELESS MADE SIMPLE U.S. CORPORATE HEADQUARTERS LINX TECHNOLOGIES, INC. 575 S.E. ASHLEY PLACE GRANTS PASS, OR 97526 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 without notice. The information contained in this Data Sheet 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. Linx Technologies makes no guarantee, warranty, or representation regarding the suitability or legality of any product for use in a specific application. None of these devices is intended for use in applications of a critical nature where the safety of life or property is at risk. The user assumes full liability for the use of product in such applications. Under no conditions will Linx Technologies be responsible for losses arising from the use or failure of the device in any application, other than the repair, replacement, or refund limited to the original product purchase price. Some devices described in this publication are patented. Under no circumstances shall any user be conveyed any license or right to the use or ownership of these patents. 2005 by Linx Technologies, Inc. The stylized Linx logo, Linx, and Wireless Made Simple are the trademarks of Linx Technologies, Inc. Printed in U.S.A.