ES Series Basic Evaluation Kit User's Guide
Contents
1. TECHNOLOGIES ES Series Basic Evaluation Kit User s Guide Wireless made simple Warning Linx radio frequency RF products may be used to control machinery or devices remotely including machinery or devices that can cause death bodily injuries and or property damage if improperly or inadvertently triggered particularly in industrial settings or other applications implicating life safety concerns No Linx Technologies product is intended for use in any application without redundancies where the safety of life or property is at risk The customers and users of devices and machinery controlled with RF products must understand and must use all appropriate safety procedures in connection with the devices including without limitation using appropriate safety procedures to prevent inadvertent triggering by the user of the device and using appropriate security codes to prevent triggering of the remote controlled machine or device by users of other remote controllers Do not use this or any Linx product to trigger an action directly from the data line or RSSI lines without a protocol or encoder decoder to validate the data Without validation any signal from another unrelated transmitter in the environment received by the module could inadvertently trigger the action This module does not have data validation built in All RF products are susceptible to RF interference that can prevent communication RF products wit2. LO_V_D lines from the transmitter have been wired out to a row of plated holes on the right side of the prototyping area On the receiver board the data lines from the decoder plus the RSSI PDN AUDIO A_REF and DATA lines from the receiver have been wired out This allows for easy access to connect external circuitry to the modules the encoder and the decoder Data line DO is connected to the buzzer and D1 is connected to the LED Range Testing Several complex mathematical models exist for determining path loss in many environments These models vary as the transmitter and receiver are moved from indoor operation to outdoor operation Although these models can provide an estimation of range performance in the field the most reliable method is to simply perform range tests using the transmitter and receiver in the intended operational environment Simple range testing can be performed with the transmitter and receiver evaluation boards To prepare the board for range testing simply turn it on by switching the power switch to the ON position Pressing SO on the transmitter activates the buzzer on the receiver board while S1 activates the LED Switches SWO and SW1 have been provided to jumper the buttons and continuously transmit This allows the designer to turn on the transmitter and walk with the receiver As the maximum range of the link in an area is approached it is not uncommon for the signal to cut in and out as the transmitter mov
3. check the battery switch positions and antenna connection Next measure the receiver s RSSI voltage with the transmitter turned off to determine if ambient interference is present If this fails to resolve the issue please contact Linx technical support Using the Boards as a Design Reference The basic evaluation boards included in this kit are very simple yet they illustrate some important techniques that should be incorporated into the board layout The module s mounting pads extend slightly past the edge of the part This eases hand assembly and allows for better heat conduction under the part if rework is necessary A full ground plane fill is placed on the bottom of the board This ground plane serves three important purposes First since a quarter wave antenna is employed the ground plane is critical to serve as a counterpoise please see Application Note AN 00500 Antennas Design Application and Performance for details on how a ground plane affects antenna function Second a ground plane suppresses the transfer of noise between stages of a product as well as unintentional radiation of noise into free space Third a ground plane allows for the implementation of a microstrip feed between the module and the antenna The term microstrip refers to a PCB trace running over a ground plane that is designed to serve as a 50 ohm transmission line See the ES Series data guide or the calculator available on our website for d
4. 030 1V917 ANTIGON a XL LNO XH HOLWI aNd aNd GND Lanye 138 oanva 13S L nzo aNd ig Pues 9a e HOLVINDAY AS Z86Zd7 cS 7 anzz AYALLVE n 9 297 s HOLIMS HaMOd 6 o SOA en us YALYSANI KIH 8n690rg9 2 E ON o p Oo 434 olanv P olanv o O viva a D 1SSH O D a N i Toe n LOOYNSAJHNOO LINY g LU Figure 11 10 Linx TECHNOLOGIES Linx Technologies 159 Ort Lane Merlin OR US 97532 Phone 1 541 471 6256 Fax 1 541 471 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 Data 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 It is the customer s responsibility to verify the suitability of the part for the intended application NO LINX PRODUCT IS INTENDED FOR USE IN ANY APPLICATION WHERE THE SAFETY OF LIFE OR PROPERTY IS AT RISK Linx Technologies DISCLAIMS ALL WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE IN NO EVENT SH
5. ALL LINX TECHNOLOGIES BE LIABLE FOR ANY OF CUSTOMER S INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING IN ANY WAY FROM ANY DEFECTIVE OR NON CONFORMING PRODUCTS OR FOR ANY OTHER BREACH OF CONTRACT BY LINX TECHNOLOGIES The limitations on Linx Technologies liability are applicable to any and all claims or theories of recovery asserted by Customer including without limitation breach of contract breach of warranty strict liability or negligence Customer assumes all liability including without limitation liability for injury to person or property economic loss or business interruption for all claims including claims from third parties arising from the use of the Products The Customer will indemnify defend protect and hold harmless Linx Technologies and its officers employees subsidiaries affiliates distributors and representatives from and against all claims damages actions suits proceedings demands assessments adjustments costs and expenses incurred by Linx Technologies as a result of or arising from any Products sold by Linx Technologies to Customer 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 Devices described in this publication may contain proprietary patented or copyrighted techniques components or materials Under no circumstances shall any us
6. board To demonstrate this one data line is used to drive a LED while another is used to activate a buzzer This board also has a prototyping area with all of the receiver and decoder lines brought out to a header Using the Kit Using the kit is straightforward Simply attach the antennas turn on the power and press buttons on the transmitter board When SO is pressed the buzzer sounds when S1 is pressed the LED turns on When any button SO S7 is pressed on the transmitter the corresponding decoder output DO D7 is active high V on the prototyping header Development Using the Prototyping Area In addition to their evaluation functions the boards may also be used for product development The evaluation boards feature a prototyping area for the addition of application specific circuitry This area has connections to Voc at the top and to ground at the bottom that can be used to power any circuitry that is added Note If added circuitry requires a higher current than can be provided by the batteries the batteries must be removed and the board powered from an external source The 9V battery on the receiver board is regulated to 5V and has approximately 50mA available for external Circuitry The holes are plated and set at 0 1 on center with a 0 04 diameter making it easy to add most industry standard SIP and DIP packages to the board On the transmitter board the data lines from the encoder and the PDN CLK CLKSE and
7. er be conveyed any license or right to the use or ownership of such items 2015 Linx Technologies All rights reserved The stylized Linx logo Wireless Made Simple WiSE CipherLinx and the stylized CL logo are trademarks of Linx Technologies
8. es This is normal and can result from other interfering sources or fluctuating signal levels due to multipath Multipath results in cancellation of the transmitted signal as direct and reflected signals arrive at the receiver at differing times and phases The areas in which this occurs are commonly called nulls and simply walking a little further usually restores the signal If this does not restore the signal then the maximum effective range of the link has been reached Since the evaluation boards are intended for use by design engineers they are not FCC certified The transmitter has been set to approximate legal limits by resistor R9 so that the range test results will approximate the results from a well designed certified product For applications where Part 15 limits are not applicable or output levels can be legally raised due to protocol duty cycle R9 can be changed according to the attenuation graph in the ES Series Transmitter Data Guide To achieve maximum range keep objects such as your hand away from the antenna and ensure that the antenna on the transmitter has a clear and unobstructed line of sight path to the receiver board Range performance is determined by many interdependent factors If the range you are able to achieve is significantly less than specified by Linx for the products you are testing then there is likely a problem with either the board or the ambient RF environment in which the board is operating First
9. etails on microstrip calculations About Antennas The choice of antennas is one of the most critical and often overlooked design considerations The range performance and legality of an RF link are critically dependent upon the type of antenna employed Linx offers a variety of antenna styles that can be considered for a design Included with the kit is a Linx CW Series connectorized whip antenna that should be connected prior to using the kit Despite the fact that the antenna is not centered on the board s ground plane it exhibits a VSWR of lt 1 7 and suitably demonstrates the module s best practical performance In Closing Here at Linx Wireless Made Simple is more than just our motto it is our commitment A commitment to the highest caliber of product service and support That is why should you have questions or encounter any difficulties using the evaluation kit you ll be glad to know many resources are available to assist you First check carefully for the obvious then visit our website at www linxtechnologies com or call 1 541 471 6256 between 8AM and 4PM Pacific Time to speak with an application engineer Legal Notice All Linx kits and modules are designed in keeping with high engineering standards however it is the responsibility of the user to ensure that the products are operated in a legal and appropriate manner The purchaser understands that legal operation may require additional permits approvals
10. hout frequency agility or hopping implemented are more subject to interference This module does not have frequency agility built in Do not use any Linx product over the limits in this data guide Excessive voltage or extended operation at the maximum voltage could cause product failure Exceeding the reflow temperature profile could cause product failure which is not immediately evident Do not make any physical or electrical modifications to any Linx product This will void the warranty and regulatory and UL certifications and may cause product failure which is not immediately evident Table of Contents Oo MO AOA nN DOA KF A ONN Introduction Ordering Information ES Transmitter Evaluation Boarad ES Receiver Evaluation Boarad Theory of Operation Using the Kit Development Using the Prototyping Area Range Testing Using the Boards as a Design Reference About Antennas In Closing Online Resources ES Series Basic Evaluation Kit Li haa User s Guide MIK TECHNOLOGIES Figure 1 ES Series Basic Evaluation Kit Introduction Linx ES Series RF modules offer a simple efficient and cost effective method of adding wireless communication capabilities to any product The Basic Evaluation Kit gives a designer all the tools necessary to correctly and legally incorporate the ES Series modules into an end product The development boards themselves serve several important functions e Rapid Module Evaluation The b
11. itter Module MS Series Encoder ES Receiver Evaluation Boarad PCB EVAL ES RX V2 TV Figure 4 ES Receiver Evaluation Board OaPron Battery 9VDC Power Switch Prototyping Area Breakout Header LR Series Receiver Module MS Series Decoder vec A REF AUDIO DATA RSSI N zagt 6 a 25938 7 Reverse Polarity SMA Antenna Connector 8 LED D1 9 Buzzer DO Theory of Operation Transmitter Evaluation Board The transmitter board is powered by two AAA batteries It has eight SPST pushbutton switches the states of which is encoded into a data stream using a using a Linx MS Series encoder If a switch is closed the transmitter is enabled while the encoder captures the pushbutton states for encoding and transmission The encoder powers down the transmitter when the button is released All of the encoder data lines have been wired out to the header to the right of the prototyping area and can be accessed for use with other switches contacts or microcontrollers Receiver Evaluation Bari The receiver board is powered by a 9V battery The ES Series receiver exhibits a sensitivity of greater than 97dBm so under optimum line of sight conditions the transmitter receiver link can operate over distances of up to 1 000 feet The data recovered by the ES Series receiver is decoded by a MS Series decoder and the data lines are updated to match the state of the data lines or pushbuttons on the transmitter
12. oards allow the performance of the ES Series modules to be evaluated quickly in a user s environment e Range Testing Using the on board encoders and decoders to generate a simplex transmission a pair of development boards can be used to evaluate the range performance of the modules e Design Benchmark The boards provide a known benchmark against which the performance of a custom design may be judged e Application Development An onboard prototyping area allows for the development of custom circuits directly on the development board All signal lines are available on a header for easy access The kit includes 2 ES Series transmitters 2 ES Series receivers 2 extra PCB mount RP SMA connectors 2 development boards 2 CW Series antennas 2 CR2032 batteries and full documentation One part is soldered to the board one extra for use on your first prototype board SAS Revised 3 18 2015 Ordering Information Ordering Information Part Number Description EVAL ES ES Series Basic Evaluation Kit 869 916MHz Figure 2 Ordering Information ES Transmitter Evaluation Boarad 5 8 5 2 A m is Figure 3 ES Transmitter Evaluation Board 1 Batteries 8VDC use 2 AAA 5 style batteries only 2 Power Switch T 3 Continuous ON Switches 4 Momentary Pushbuttons SO DO S1 D1 9 D o Prototyping Area Breakout Header Reverse Polarity SMA Antenna Connector ES Series Transm
13. or certifications prior to use depending on the country of operation Online Resources If you have questions regarding any Linx product and have Internet access make www linxtechnologies com your first stop The Linx website gives you instant access to the latest information regarding the products and services of Linx It s all here including e Manual and Software Updates e Latest News e Data Guides e Application Notes e Knowledgebase e FCC Information And much more Be sure to visit often www antennafactor com The Antenna Factor division of Linx offers a diverse array of antenna styles Figure An tennaFactor 5 many of which are optimized for use by Linx with our RF modules From innovative embeddable antennas to low cost whips domes to GPS antennas Antenna Factor likely has an antenna for you or can design one to meet your requirements AN Figure 5 Antenna Factor Anetnnas SW ONJ MO lt ng mHaav siwado GNI don for MOL Oba aNas Ino viva fg PONO 5 MOOL GIH band IODA lt p and 4001 VL C DONO DONO ranya ias j X004 ELH oanva Tas IODA 1a T Jor eh ga MOOL LIH SJ XXX NXL S PAS nn MA viva fg E ano asjas Y19 an9 jy an9 g A O oa Gz 130 AI 41301 JIN ce 8 SN 5 sno 2 WVAN fz PONO 5 97 5 54 a Ja or Nad pLa SOA LOOVWSASYNOO Mn LINY aNd 2 i vvu va a ea PU z gt 8s N p SOA gt Le aNd A 4001 SW
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