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1. la 72 7 mm 2 86 in ji 63 0 mm hi 2 48 in i 1 mE 25 mm 99 in 4 20 3 mm 68 0 mm 80 in 2 68 in gt g mm gt l e 3 14 in _ f 28 9 mm H h j i 21 mm 1 14 in E 83 in K NT i Aa m j 14 3 mm Y 12 in 16 mm 6 i P in eei 1 31mm 1 23 in ES 1 e 33 5 1 32 in External accelerometer AH if applicable Las mm 85 4 mm 18 in 3 36 in ETRE HE 23 1 mm Lad in 91 in 1 Node Node Dimensions 68 mm x 85 4 mm x 33 5 mm Weight Node 178 grams Environmental Rating IP67 External Accelerometer Dimensions 31 mm x 24 mm x 16 mm Weight Node 74 grams Environmental Rating IP67 W4 LORD MicroStrain zd SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual Specifications 11 2 Operating Specifications Parameter Specifications Sensor input channels Single axis MEMS accelerometer option 1 channel Triaxial MEMS accelerometer option 3 channels Internal temperature 1 channel Data storage capacity 4M bytes up to 2 000 000 data points data type dependent Accelerometer Channels integrated or external 2 gor 10 gstandard 5 g 30 g 50 g 100 g or 200g options available Accelerometer bandwidth OtoX 100 Hz 3 dB cutoff high bandwidth option available 0 3 error typ
2. Channels Synchronized Samping Low Duty Cyde Dataloggng Power RF Info a a ue onte 1 v wae Acceleration G 21 ae Acceleration G t G Conversion Formula output slope bits offset Effective Range 2 552 to 2 101G 3 7 vile Acceleration P Low Pass Fiter Cutoff 3dB pt i som ox eme Figure 33 Advanced Conversion Values Menu Conversion Formula The conversion formula assumes a linear relationship between the original units such as A D bits and new engineering units such as g force and it is expressed mathematically as y mx b where y is the engineering units at a given point measurement mis the slope of the line that represents the linear ratio x is the original unit value at a given point and bis a unit conversion offset in the case of unit conversions or the fixed zero load offset of the sensor in the case of measurement calibration coefficients Negative values may be entered for any coefficient Slope is the linear scaling slope coefficient The slope is the ratio of original units to new engineering units EU and it is used to convert the sensor measurements The slope conversion value will vary depending on the engineering units desired For example if the original unit is A D values bits and the desired engineering units are acceleration in g force the slope conversion would describe how many bits equal one unit of g force bits g
3. 3 DATA ACQUISITION sensor data is missing or incorrect 31 no com to node or gateway 3 2 sampling settings are incorrect 3 53 sampling has not started 3 4 sensor is not connected correctly 35 sensor channel not configured correctly 3 6 sensor calibration is invalid W4 LORD MicroStrain SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual Troubleshooting Problem Possible cause and recommended solution 1 1 node or gateway power is off 1 POWER The status indicator LED on the device may be off Turn the gateway or node does device on and the status indicator LED should illuminate not turn on 1 2 external power is off or miswired Verify the device power source is connected correctly and powered on 1 3 wrong power supply Using a power supply other than the one specified for the device or an external supply that is outside of the device operating range could result in permanent damage to the device or cause it to not work properly 1 4 node battery is dead If the node will not power on the node battery may need to be replaced 1 5 node or gateway is damaged If all power settings and connections have been verified and the node is still unresponsive contact LORD MicroStrain Technical Support See Technical Support on page 51 2 1 node or gateway has no power 2 COMMUNICATION Verify the node and
4. 1 Download the LXRS Firmware Upgrade file from the LORD MicroStrain website 2 Once downloaded extract the contents of the zip file into a folder on the computer Verify there is a file with a zhex extension 3 Launch Node Commander and establish communication between the node and gateway as normal 4 While holding F1 button on the keyboard right click the node name and a drop down menu will appear amp Base Station Com 36 H Noda 412 Upgrade Firmware Figure 35 Update Node Firmware W4 LORD MicroStrain a SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual Troubleshooting 5 Release the F1 key 6 Click Upgrade Firmware and the Node Firmware Upgrade window will appear 7 Click Browse and navigate to the downloaded zhex file 8 Click Write and the upgrade sequence will begin When completed Upgrade Success will appear in the Status column Bootloader Version FW Before Upgrade FW After Upgrade Status 1 06 8 00 8 05 Firmware found Ready Path C VUserslb trutor Desktop lmirostrain wireless frmware V2 1 0 2hex Figure 36 Upgrade Firmware Window W4 LORD MicroStrain 4 SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual Troubleshooting 8 4 Repair and Calibration The G Link2 LXRS is factory calibrated when it is manufactured No further calibration is required General Instructions
5. In order to return any LORD MicroStrain product you must contact LORD MicroStrain Sales or Technical Support to obtain a Return Merchandise Authorization number RMA All returned merchandise must be in the original packaging including manuals accessories cables etc with the RMA number clearly printed on the outside of the package Removable batteries should be removed and packaged in separate protective wrapping Please provide the LORD MicroStrain model number and serial number as well as your name organization shipping address telephone number and email Normal turn around for RMA items is seven days from receipt of item by LORD MicroStrain Warranty Repairs LORD MicroStrain warrants its products to be free from defective material and workmanship for a period ofone 1 year from the original date of purchase LORD MicroStrain will repair or replace at its discretion a defective product if returned to LORD MicroStrain within the warranty period This warranty does not extend to any LORD MicroStrain products which have been subject to misuse alteration neglect accident incorrect wiring mis programming or use in violation of operating instructions furnished by us It also does not extend to any units altered or repaired for warranty defect by anyone other than LORD MicroStrain Non Warranty Repairs All non warranty repairs replacements include a minimum charge If the repair replacement charge exceeds th
6. Mathematically the slope is min the formula y mx b Offset is the linear scaling offset coefficient and it is typically the starting output value of the sensor with no load applied in the original units Mathematically the offset is bin y mx b Effective Range the effective range is the calculated sensor measurement range in engineering units EU The effective range is dependent on the slope offset and resolution of the node The effective range is the number of bits per EU unit slope multiplied by the total number of bits minus the offset if applicable W4 LORD MicroStrain SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual Sensor Settings and Operation 7 4 Operational Considerations 7 4 4 Measurement Range The accelerometer bandwidth limits the range of frequencies that can be measured As the measured vibration frequency approaches the upper bandwidth limitation of the accelerometer the accelerometer sensitivity decreases The result is a predictable reduction in the measured vibration amplitude when measuring beyond the bandwidth limit The bandwidth limitation is indicated in the node specifications see Specifications on page 57 The low pass filter cutoff frequency setting see Channel Configuration on page 17 limits the measured readings that will be reported based on the frequency of the signal Frequency readings above the selected setting will decrease in amplitude just as wi
7. a lt ye evade pas Gada Saving To C VProganD ata MicsoStravi odeComenander D sta S angled D ata sess on 02 18 2014 119 52 27 Mage 024 6001 PEE SES crt d Open fieSce183M8 N nc A Model G Link 106 Node Info Channel 1 Camel 2 Channel 3 Channel 4 ceres L Base RSSI Node RSSI lt mA 7 Oon TIRS 1945 ma52 d m SEM we j SN 2419 43600 Sample Rate sime E im Firmware 8 05 Total Samples 32614 Memory Fult 1 Tier Tick 32513 c Wel Num Triggers 14 lost Samet o WY Node 31463 Sync ap Pet Success El Bl Mode V Link Bane 32287 28 25 8 3420 24 48m am d Options LXRS Semple Rate xeu j S N 2433 31463 I Total Samcles 2035 1 Firmware 818 Tre m que b Memory futo Laien 9 Ae Num Trigger o N Packet Success 100 0 Figure 13 Synchronized Sampling Data View a Device status Node sampling mode and gateway status are displayed in parentheses next to the device name b Node information includes node serial number and sampling statistics Right click on the node name for more menu options such as Stop Nodes c Data is a display of the sampled data with each channel in its own column d Radio strength indicates the strength of the communication between the gateway and node See Range Test on page 33 e Data file the location and size of the data file as data is added View the data in CSV format with the Open File button f View menu Select between Data Gri
8. LORD USER MANUAL G Link29 LXRS9 Wireless Accelerometer Node W4 LORD MicroStrain SENSING SYSTEMS W4 LORD MicroStrain SENSING SYSTEMS MicroStrain Sensing Systems 459 Hurricane Lane Suite 102 Williston VT 05495 United States of America Phone 802 862 6629 Fax 802 863 4093 http www microstrain com sensing support LORD com sensing sales LORD com Copyright O 2015 LORD Corporation 3DM 3DM DH 3DM DH3 3DM GX1 3DM GX2 3DM GX39 3DM GX4 15 3DM GX4 25 3DM GX4 45 3DM GX4 3DM RQ1 3DM GQ4 AIFP Ask Us How Bolt Link DEMOD DC DVRT DVRT Link DEMOD DVRT EH Link EmbedSense ENV Link FAS A G Link G Link2 HS Link IEPE Link Inertia Link Little Sensors Big Ideas Live Connect LXRS MathEngine MicroStrain MVEH MXRS Node Commander PVEH RHT Link RTD Link SensorCloud SG Link Shock Link Strain Wizard TC Link Torque Link V Link Watt Link Wireless Simplicity Hardwired Reliability and WSDA are trademarks of LORD Corporation Document 8500 0037 Revision B Subject to change without notice G Link29 LXRS Wireless Accelerometer Node User Manual Table of Contents 1 Wireless Sensor Network Overview 0 00 00 0 2 aaa 6 2 Node Overview 7 2 1 Components AAAH AA 8 2 2 Interface and InditatbEe is daa ad anan Anak abala bh laap had ro Ren so RU KK KK KK ME
9. 10 3 Wireless System Equipment The following system parts are available for use with the G Link2 LXRS For the most current standard custom and OEM product options refer to the LORD MicroStrain website or contact the LORD MicroStrain Sales Department See Product Ordering on page 56 LORD Model Description MicroStrain Part Number WSDA 1500 SK EthemetDataGatewayStaterKi 63141501 NodeCommande Sofware 6301 0300 SensorCloud Software Subscription om contact LORD MicroStrain Sales LIES 7 _ ReplaementUSBcabe 9022 0029 7 USBGatewaycableextender 6307 0900 Replacement serial cable 4005 0005 Table 5 Wireless System Equipment W4 LORD MicroStrain m SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual Parts and Configurations 10 4 Product Ordering Products can be ordered directly from the LORD MicroStrain website by navigating to the product page and using the Buy feature http www microstrain com wireless For further assistance our sales team is available to help with product selection ordering options and questions Sales Support sensing sales LORD com Phone 802 862 6629 Fax 802 863 4093 9 00 AM to 5 00 PM Eastern Time US amp Canada W4 LORD MicroStrain SENSING SYSTEMS Specifications G Link29 LXRS Wireless Accelerometer Node User Manual 11 Specifications 11 1 Physical Specifications
10. LORD MicroStrain accelerometers which are available in 2 gand 10 g standard ranges as well as custom ranges up to 200 g For ordering information see Parts and Configurations on page 53 P NS ja e9 sensor connector k NEE NN sensor TE connector pin face view accelerometer output BEEN v output O 4 rwo Ms vsenso Figure 27 Sensor Connector W4 LORD MicroStrain kai SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual Powering the Node 6 Powering the Node The node can be powered with either the internal battery or an external source The G Link29 LXRS automatically switches between the two sources when it detects a voltage or lack of voltage on the external input No user intervention is required 6 1 Internal Node Battery The G Link22 LXRS contains an internal non rechargeable ZXWARNING Lithium battery For important precautions see Safety Information on page 61 The node is powered by a non rechargeable replaceable 3 6 V dc 2600 mAH lithium battery If the node will not power on the battery may need replacing To replace the battery remove the node cover and the battery see Interface and Indicators on page 9 Install a new Lithium 3 6 V AA type battery Saft LS14500 or equivalent in the place of the depleted one observing the correct polarity orientation The positive polarity is indicated on the battery and the battery holder by a symbol
11. be configured In Node Commander execute the Stop Node command to put the node in idle state allowing configuration to occur 2 8 gateway or node is damaged Verify all connections power and settings If available try installing alternate nodes and gateways one at a time to see if the faulty device can be identified If no conclusion can be determined or to send a device in for repair contact LORD MicroStrain Technical Support See Technical Support on page 51 3 1 no communication to node or gateway 3 DATA ACQUISITION Verify connections and power to the node and gateway Verify they are powered on and communicating with the software Enter a configuration menu to verify that the node can be accessed sensor data is missing or incorrect 3 2 sampling settings are incorrect If the sampling mode rate or duration are not performing as expected enter the node configuration menu and verify the sampling settings 3 3 sampling has not started If sampling is occurring the sampling mode will be displayed next to the node name in Node Commander The node device status indicator will also be flashing the sampling mode code If the node is not sampling activate it in the software or with a sample on start up boot sequence 3 4 sensor is not connected correctly Verify sensors connections and wiring if applicable For non standard connections contact LORD MicroStrain Technical Support See Technical Support on page
12. frequencies smooth out noisy data perform math operations such as Fast Fourier Transforms W4 LORD MicroStrain a SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual System Operational Overview FFTs and more Figure 19 MathEngine View MathEngine interfaces with the SensorCloud graphing view for faster processing Users can write their own algorithms for custom applications Refer to the MathEngine website for more information http sensorcloud com mathengine Lio Frequency vs Log Amplitude y is 1 vaste ke ao d ao Sensor Channel Graph H LewPaes100H2 Peak value of 0 94 at 4 75 Hz 200 30 400 500 Frequency Hz Figure 20 FFT Graph in SensorCloud http sensorcloud com W4 LORD MicroStrain a SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual System Operational Overview 3 8 2 Sensor Data Files Data acquired in Node Commander is stored in CSV format and can be opened with Microsoft Excel Quattro Pro Open Office or another CSV editors spreadsheet program Data in this format is easily uploaded to SensorCloud using the CSV Uploader The data files can be found on the host computer in the default directory or the location specified at the beginning of the sampling session as applicable The files are organized in separate folders by mode
13. EKA KK SK KAK KK KK KK KK KK KK KK KK KK KK KI 64 13 2 OMI I eec ut CL ___6 k E L E EEL EEE I K KE EE E EEEEE E NM E D E REEDR RMN 65 W4 LORD MicroStrain SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual System Overview 1 Wireless Sensor Network Overview The LORD MicroStrain Wireless Sensor Network is a high speed scalable sensor data acquisition and sensor networking system Each system consists of wireless sensor interface nodes a data collection gateway and full featured user software platforms based on the LORD MicroStrain Lossless Extended Range Synchronized LXRS data communications protocol Bidirectional wireless communication between the node and gateway enables sensor data collection and configuration from up to two kilometers away Gateways can be connected locally to a host computer or remotely via local and mobile networks Some gateways also feature analog outputs for porting sensor data directly to standalone data acquisition equipment The selection of available nodes allows interface with many types of sensors including accelerometers strain gauges pressure transducers load cells torque and vibration sensors magnetometers 4 to 20mA sensors thermocouples RTD sensors soil moisture and humidity sensors inclinometers and orientation and displacement sensors Some nodes come with integrated sensing devices such as accelerometers System sampling capabilities are IE
14. Wireless Accelerometer Node User Manual System Operational Overview e Data file The location and size of the data file as data is added View the data in CSV format with the Open File button f End sampling The red X is used to exit the sampling window and or end sampling l l l Once sampling has started it will continue as configured without the need to leave Node Commander open However if the node is powered off and is not configured to sample on boot up data acquisition will end and must be restarted in Node Commander l l W4 LORD MicroStrain zd SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual System Operational Overview 3 8 Data Handling Data acquired through Node Commander is automatically saved on the host computer see Sensor Data Files on page 29 and can also be viewed from the web based SensorCloud portal Saved data can be uploaded to SensorCloud and Ethernet gateways provide the option to automatically port the data to SensorCloud during data acquisition for near real time display and aggregation Ethernet gateways can also be configured to save data locally to internal memory for future upload to the host computer or SensorCloud SensorCloud is based on cloud computing technology and is designed for long term collecting and preservation of data Features include time series and visualization graphing automated alerts and data interpretation tools
15. be removed to replace the battery inside and the external power connector includes a dust cap The indicators on the G Link2 LXRS include a device status indicator that is visible when illuminated under the clear cover The following table describes basic indicator behavior During data acquisition the device status indicator has other sequences see Device Status Indicators on page 47 i r screws 4x 1 C i removable cover S S Cu replaceable battery device status indicator underclear cover FON device information label external sensor option only N NG T SE ONIOFF p sed switch external power connector mounting power holes 4x connecter cap Figure 2 Interface and Indicators Indicator Behavior Node Status Node is OFF FF Device status indicator Rapid flashing on start up Node is booting up 1 slow pulse per second Node is idle and waiting for a command Table 2 Indicator Behaviors W4 LORD MicroStrain P SENSING SYSTEMS G Link29 LXRS Wireless Accelerometer Node User Manual Node Overview 2 3 Node Operational Modes Sensor nodes have three operational modes active sleep and idle When the node is sampling it is in active mode To stop sampling the node is put into idle mode Idle mode is used for configuring node settings such as frequency and sampling rates and is the only way to stop sampling or go between active and sleep modes Sleep mo
16. by Address Adding a node by address requires the node to be on the same communication frequency as the gateway The node address and frequency are indicated in the documentation included with the node when it is purchased 1 To adda node by address right click on the gateway name in the Controller window and select Add Node Add Single Node Figure 6 Adding a Node by Adaress 2 The node address and frequency are indicated in the documentation included with the node Enter the node address and select OK If the node is not found a message will appear and provide the option to scan for the node on other frequencies Alternately the Node Discovery feature can be used Node is assumed to be on channel 15 2 425 Ghz oc cod Figure 6 Adding a Node by Address W4 LORD MicroStrain s SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual System Operational Overview 3 4 2 Using Node Discovery The Node Discovery feature allows connection between the gateway and node to occur even if they are on different frequencies To connect to nodes using node discovery begin by making sure the node is powered off Automatic node discovery may not work in some boot up modes If the node is not in normal boot up mode the assigned one can be bypassed to enable node discovery For more information see Troubleshooting Guide on page 43 1 Right click on the gateway name and select Add Node Node Discove
17. channels is required in some applications For example when sending broadcast messages from the gateway to multiple nodes including the synchronized sampling beacon all nodes must be on the same channel as the gateway in order to receive the broadcast Assigning channels is also a good idea when multiple gateways are attached to one host computer or when other wireless equipment is nearby and frequency or transmission interference may occur W4 LORD MicroStrain u SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual Safety Information 12 Safety Information This section provides a summary of general safety precautions that must be understood and applied during operation and maintenance of components in the LORD MicroStrain Wireless Sensor Network 12 1 Battery Hazards AWARNING A CAUTION BYA The G Link2 LXRS contains an internal Lithium battery W o Lithium batteries are a fire and explosion hazard Do not store A or operate the node at temperatures above 212 F 100 C E Do not disassemble short circuit crush puncture or otherwise misuse the battery Lithium batteries contain toxic chemicals that are harmful to humans and the environment Disposal is subject to federal and local laws Do not discard the battery or the node in the ce trash Follow proper battery disposal protocol or contact LORD MicroStrain Technical Support for information on extracting the battery or returning the pr
18. check box is used to enable the channel and select it for sampling The icon next to the check box describes the channel type inherent to the node being used b Current channel configuration The Data Output Units Input Range and Label fields describe how the channel is currently configured c Configure The Configure button changes the channel parameters such as measurement units gain and offset settings and calibration values The channel must be enabled first by selecting the adjacent check box Channels Synchronized Samping La Duty Gr Channel C Physical Units Conversion Enabled mg Data Output Units Gain 1 9 ha Acceleration ss 2 V 3 v 4 F pa i Acceleration Acceleration Temperature G G C Figure 8 Node Channels Menu W4 LORD MicroStrain M SENSING SYSTEMS G Link29 LXRS Wireless Accelerometer Node User Manual System Operational Overview 2 To enter the channel configuration menu select the Configure button as shown in Figure 8 Node Channels Menu The channel configuration menu options change depending on the sensor type selected a Channel Label names the channel b Channel diagram shows channel electronics and data flow c Conversion Coefficients defines the type and units of the measurement being made d Sensor Slope is the sensor sensitivity value used to convert the sensor voltage reading to engine
19. of taking measurements from a sensor or device Sampling Mode the type of sampling that is being utilized such as event triggered continuous or periodic The nodes have several sampling modes that employ these types of sampling Sampling Rate the frequency of sampling Slope When describing a mathematically linear relationship the slope is the steepness of the line that represents that relationship on a graph The equation of a straight line is y mx b where xis the x axis coordinate yis the y axis coordinate mis the slope and bis the offset Streaming Streaming is a sampling mode in which all active channels and the sensors attached to them are measured and the acquired data is transmitted to the gateway and software The data is not written to non volatile memory during streaming Streaming can either be finite have a user defined start and end time or continuous continued until the power is cycled on the node Synchronized Sampling asampling mode that automatically coordinates all incoming node data to a particular gateway This mode is designed to ensure data arrival and sequence Transmission rate the number of data packets per transmission window measured in seconds Depending on the sampling mode and settings it will be between 1 and 64 packets second Transmission window the time allowed for one data transmission at the automatically determined transmission rate USB Universal Serial Bus a serial data commu
20. owned shared and demo devices This view provides links to each device s SensorCloud subscription plan configuration options and a summary of last communications and data transactions Account The account view is for logistic management of the SensorCloud account such as changing the log in password accessing user email and reviewing billing information CSV Uploader The data upload feature enables data from any source such as non Ethernet LORD MicroStrain gateways or third party sensor to be uploaded to the SensorCloud platform The data must be in the LORD MicroStrain CSV format Data This view is only available after a device is selected It displays data that is collected from sensor nodes or uploaded from files Data selections are listed by node channel or a user defined label and can be enabled for display in the graph window The interactive graph has navigational features such as panning zooming and an overview graph for single click access to data points or ranges There are also use and management features such as viewing the meta data and downloading embedding and tagging data graphs Figure 18 SensorCloud Data View Settings The settings view provides options for adding meta data configuring the data displays for each channel creating alerts based on data thresholds setting the data timezone and more MathEngine is used to analyze sensor data Functions include the ability to filter out
21. such as data filtering statistical analysis and advanced algorithm development with the integrated MathEngine interface Leveraging the open source API SensorCloud can also be used to collect data from other LORD MicroStrain sensor products or third party systems Basic SensorCloud services are available to all users free of charge see Connecting to SensorCloud on page 26 ch2 1Hz ch3 1Hz cha 1Hz AM Timestamp GMT chi ch2 ch3 cha lii i Aon 53 17 5 _1473 45 1494 594 0 703699 2166 703 53 19 9 1473 023 1488 775 0 703585 2166 704 53 20 9 1474 546 1492 239 0 704699 2166 704 53 21 9 1475 745 1493 966 0 704446 2166 704 53 22 9 1476 143 1491 654 0 705406 2166 705 53 23 9 1486 709 1492 854 0 705149 2166 705 53 24 9 1486 581 1492 897 0 704863 2166 706 53 25 9 1477 195 1488 558 0 70439 2166 706 53 26 9 1486 35 1493 403 0 70435 2166 707 53 27 9 1475 12 1488 122 0 70352 2166 707 53 28 9 1473 597 1491 184 0 706812 2166 707 Figure 15 Data Storage Display and Processing W4 LORD MicroStrain a SENSING SYSTEMS G Link29 LXRS Wireless Accelerometer Node User Manual System Operational Overview 3 8 1 Connecting to SensorCloud To connect to SensorCloud go to the SensorCloud website log in page and enter the log in credentials Register as a new user if needed http sensorcloud com log in SensorCloud Login Email Password oraot your passwo
22. 51 W4 LORD MicroStrain a SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual Troubleshooting 8 2 Device Status Indicators The following is a complete summary of the G Link2 LXRS status indicators Indicator Behavior Node Status Node is OFF or sleeping Node is sleeping with radio check OFF with occasional flash intervals enabled default is every 5 seconds power is initially applied sending out a status message Device Status Node is in synchronized sampling Node is in synchronized sampling ON bright blue mode and is re syncing or taking a burst sample Node is sending out communication requests Such as in ping command range test or EEPROM read write Four to seven slow pulses T us Fault condition when power is initially applied Pulses for each ping Table 3 Device Status Indicators W4 LORD MicroStrain a SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual Troubleshooting 8 3 Updating Node Firmware Under the recommendation of LORD MicroStrain Technical Support Engineers nodes can be upgraded to the latest available firmware to take advantage of new features or correct operating issues Node Commander version 2 7 0 or greater can be used to update any mXRS or LXRS node or gateway firmware to the most current version Updates are found on the LORD MicroStrain website See Technical Support on page 51 for contact and website information
23. E KK KK KK Mb KK KK KS 9 2 3 Node Operational Modes naona oiaro araona raora orrara r rrna 10 3 System Operational Overview IIR RII II memes retirer eiii 11 3 1 Software Installation se ese ee e nsn KK KK KK KH 12 3 2 System Connections esses eese se esses sese res KK KK sie 13 3 3 Gateway USB Communication 2 2 dee secure lass io es aee a Ree Sg eges 14 3 4 Connectto Nodes se e e e le ese e ilie KK KK i KK KK KS 15 3 4 1 Adding a Node by Address 7 15 3 4 2 Using Node Discovery 00 20 00 cece cece cece cece ccc ceccecceeeeececececeecceeeeeeceecees 16 3 5 Channel Configuration 0 00 02 cece cece ccc ce cece c eee c ccc eececeececeececeececceceereceeeeceesess 17 3 6 Sampling Settings sisse eeceecececeeceetececseceececeesesees 19 3 7 Data Acquisition 00 0000 coc ec c ccc SEKE AKS cee se eee esse e sse se KK lesse li 20 3 8 Data Handling c ec cece eee e cece e e e se se me e ss sse se se seines 25 3 8 1 Connecting to SensorCloud 26 3 8 2 Sensor Data Files E 29 4 Node Installation 30 4 1 Mounting Recommendations 0 20 20 Saa cece see e see se se selle sees 30 4 2 Sensor Frame ccs fo casctdbeccsescaumccdicacendsiiennasacauded dauainiedacee da KK KK KK KK KK KK KK KK KK KK KK K KK KK KK KK KK 31 4 3 Optimizing the Radio Link 2 22 20 00 0 0 cece cece eee cece cece e e
24. EE 802 15 4 compliant and include lossless synchronized sampling continuous and periodic burst sampling and data logging A single gateway can coordinate many nodes of any type and multiple gateways can be managed from one computer with the Node Commander and SensorCloud software platforms Integration to customer systems can be accomplished using OEM versions of the sensor nodes and leveraging the LORD MicroStrain data communications protocol Common wireless applications of LORD MicroStrain8 Sensing Systems are strain sensor measurement accelerometer platforms vibration monitoring energy monitoring environmental monitoring and temperature monitoring W4 LORD MicroStrain S SENSING SYSTEMS G Link29 LXRS Wireless Accelerometer Node User Manual Node Overview 2 Node Overview The G Link2 LXRS wireless sensor node features the option of either an integrated tri axial or external single axis micro electro mechanical MEMS accelerometer and an internal temperature sensor Either option can be factory configured to measure acceleration values up to 200 g The node has 16 bit resolution with a measurement bandwidth of 0 to 100 Hz standard and custom nodes are available with a bandwidth greater than 1000 Hz The node can log data to internal memory and transmit real time synchronized data at a wide range of sample rates and intervals To acquire sensor data the G Link2 LXRS is used with a LORD MicroStrain data gateway s
25. Figure 28 Battery Orientation Node battery life is highly dependent on operational parameters such as sample mode and rate More active channels and higher sample rates equate to decreased battery life battery polarity Figure 28 Battery Orientation W4 LORD MicroStrain 99 SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual Powering the Node 6 2 Connecting an External Power Supply Apply only the input voltage range specified for the node in the polarity indicated Failure to do so could result in personal injury and permanent damage to the node see Safety Information on page 61 The node may be directly powered by a regulated AC to DC power supply with the appropriate output parameters see Operating Specifications on page 58 It can also be powered by an external battery or other regulated DC supply The supply must deliver a stable voltage between 2 2 and 5 V dc and be capable of sourcing at least 100 mA External battery holders are available for the G Link2 LXRS see Node Accessories on page 54 External power is applied through the power connector and cable Figure 29 External Power Connection Observe connection polarities or the node may be damaged connector pin B rz WE Vin a 4 Bk GND face view Figure 29 External Power Connection W4 LORD MicroStrain d SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node U
26. Rs SK ASK SK lese KK KK KK 32 4 3 1 Range Tasit 33 5 1 Connecting External Sensors u s ak KALA NG NGA kk AK KAMAG 34 W4 LORD MicroStrain SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual 6 Powering the Node aoaaa 000000000000 a000 aaaea a000 aaa aaoo 0AE a 00a raana 35 6 1 Internal Node Battery esse ee sese se se se s ree eere KK KK KI 35 6 2 Connecting an External Power Supply 2 0 0 20 0 co cc cece cece ce cee cececcececceceececeecesees 36 7 Sensor Settings and Operation ee cence ees 37 7 1 Node Channels Designations 0 0 20 e cece cece ec cee ec ce ceccececeececcececceceececeesecees 37 7 2 Measurement UnilS scot eee ee e dee pecan teenie PAA 38 7 3 Sensor Conversion Values uaaa dadandan naoa oana naaraan nannan a nnan 39 7 4 Operational Considerations eee ec ec ce cee cececcececceceececeececeececeeeeee 41 7 41 Measurement Hande ccc cec eese se se se se rese re eere RR KK 41 7 4 2 Node Sampling Rates a 41 7 4 3 Gravity ONG ha aa Ao aaa RR 42 7 5 On board Temperature Sengar aaoo ia odrona oaro a rrera onarri arrr rr ronn 42 8 Troubleshooting 43 8 1 Troubleshooting Guide 43 8 2 Device Status Indicalots coc eed covewsesedstedesuceteds en ado LANG SAS Eo aonar onar KK KK AA 47 8 3 Updating Node Firmware 2 0 0 0 0 20 saa ccc eee cece cece e II e me se sess s
27. Save Location indicates where the data file will be saved on the host computer Use the Browse button to select a location b Node configuration includes the node serial number sampling settings bandwidth calculation and current status Highlight any node or group of nodes and the Remove Configure and Refresh buttons become active The Configure W4 LORD MicroStrain su SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual System Operational Overview button opens the node configuration menus to adjust settings as needed and recalculates the node bandwidth Multiple nodes can be configured together by using the Shift or Ctrl key to select them c Lossless enables the lossless data protocol The protocol enables buffering and retransmission of data in order to provide 100 data collection success Using this feature may increase data display latency Ke n Save Locaton C ProgramData WroStrain NodeCommander Data a T eee J a Nodes 2 Type Active Channels Sample Rate Sweeps b Node 30252 G unk 10G DRS 1 sizke Unlimited bemm e a w mA e m m a A 0 Nebwerk Conf guraton Y 7 Enable Beacon on Start N ar g Figure 12 Synchronized Sampling Menu d High Capacity optimizes bandwidth and power use for nodes with slower sample rates by reducing the transmit rates May increase data latency e Network Bandwidth is the total calculated bandwidth used by all the nodes T
28. Wireless Accelerometer Node User Manual Safety Information 12 4 Disposal and Recycling ZNWARNING A CAUTION MYA The G Link22 LXRS contains internal batteries printed circuit boards and electronic components These items are known to contain toxic chemicals and heavy metals Lr that are harmful to humans health and the environment Disposal is subject to federal and local laws Do not m discard the device or batteries in the trash Follow proper electronic and battery waste disposal protocol as dictated by federal and local authorities Some states also have programs for extracting reusable parts for recycling W4 LORD MicroStrain SENSING SYSTEMS G Link29 LXRS Wireless Accelerometer Node User Manual References 13 References 13 1 Reference Information Many references are available on the LORD MicroStrain website including product user manuals technical notes and quick start guides These documents are continuously updated and new applications are added They may provide more accurate information than printed or file copies Document Where to find it http www microstrain com configure your Online Wireless Network Calculator system Node Commander Software User Manual SensorCloud http www sensorcloud com system Overview overview MathEngine Overview http www sensorcloud com mathengine LORD MicroStrain Wireless Sensors Network Software Development Kit Product Datasheets http www mic
29. al Institute of Standards and Testing is a nationally accepted organization for testing and calibration of technological devices Node The node is the wireless transceiver that the sensor s is connected to providing communication with the gateway The G Link LXRS V Link LXRS and SG Link LXRS are examples of nodes manufactured by LORD MicroStrain W4 LORD MicroStrain m SENSING SYSTEMS G Link29 LXRS Wireless Accelerometer Node User Manual References Node Tester board The Node Tester board is a device designed by LORD MicroStrain that can be plugged into nodes to test their functionality Offset When describing a mathematically linear relationship the offset is the value where the line that represents the relationship in a graph crosses the y axis The equation of a straight line is y mx b where xis the x axis coordinate yis the y axis coordinate mis the slope and bis the offset Oversampling In signal processing oversampling is a technique used to achieve increased signal resolution and better noise immunity by recording readings at a higher frequency than the output of the device being measured In analog to digital conversion the higher the oversampling rate the better the recreated analog signal Packet unit of sampled data Periodic Burst Sampling a mode of operation in which the node is sampled for a fixed window of time burst and then repeats that window at set intervals The burst duration
30. ampling and Datalogging Some modes have user configurable settings for sample rate sample duration and related features Other settings are automatic depending on number of active channels and other variables For more information on sampling modes refer to the Node Commander user manual see References on page 64 a e chanel Synchronized Samping Low Duty Cyde Da Sampling Sebar m aus e oe 0 p Figure 10 Sample Settings Menu In general when determining what sample mode and rate is most suitable for the application refer to the following guidelines s Use a sample rate at least twice the value of the target measurement frequency This is the minimum sample rate required to produce an accurate digital representation of the measured signal The higher the sample rate the more accurate the digital representation e Using the minimum required sample rate will increase battery life and minimize the allocated network bandwidth e Using periodic burst sampling in place of continuous sampling will increase battery life and the longer the sample interval the more power and network bandwidth will be saved For synchronized sampling use the online calculator to evaluate network bandwidth at different sampling settings http www microstrain com configure your system W4 LORD MicroStrain SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual System Operational Overview 3 7 Data Acquisi
31. and time between bursts is configurable Same as burst sampling Ping a byte transmitted by the gateway to the node The node responds by echoing the byte indicating communication exists between the node and gateway Range Test a continuous string of pings used to validate communication between the gateway and the node over distance and obstruction Read Write EEPROM commands transmitted to the node to read or write parameters stored in the node s operating system Real Time Clock RTC a computer clock that keeps track of the current time Resolution in digital systems the resolution is the number of bits or values available to represent analog values or information For example a 12 bit system has 4 096 bits of resolution and a 16 bit system has 65 536 bits RFI Radio Frequency Interference is a disturbance in an electrical circuit due to electromagnetic induction or radiation RSSI Received Signal Strength Indication is a measurement of the transmission power in a radio signal It is measured in decibels with reference to 1 milliWatt dBm RS232 a serial data communications protocol W4 LORD MicroStrain oF SENSING SYSTEMS G Link29 LXRS Wireless Accelerometer Node User Manual References Sensor a device that physically or chemically reacts to environmental forces and conditions producing a predictable electrical signal Sleep a command transmitted to the node to put it into sleep configuration Sampling the process
32. and then further categorized by date session and or node serial number The default directory is C ProgramData Microstrain NodeCommander Data Synchronized sampling and low duty cycle files are found in the Sampled Data folder and streaming data is stored in the Streaming folder Datalogging files need to be downloaded from the node to be available for viewing They are accessed through datalogging menus as well as the File menu and are saved in the Downloaded Triggers folder Master_09 30 2013 T19 46 08 csv 9 30 2013 3 46 PM GQ Node372 csv 9 30 2 G Sensorinfo_09 30 2013 T19_46_08 csv GY SyncNetworklnfo 09 30 2013 T19 46 08 9 788 Computer E Local Disk C Figure 21 Exploring Data l l l The Microsoft Excel the Time data column in the data file may have to be changed to m d yyyy h mm ss 000 format to make it more readable l l W4 LORD MicroStrain x SENSING SYSTEMS G Link29 LXRS Wireless Accelerometer Node User Manual Node Installation 4 Node Installation 4 1 Mounting Recommendations The G Link2 LXRS is rated for IP67 environmental protection from water and dust and can be used in many indoor and outdoor applications There are two mounting tabs on the node with holes for fastening For proper coupling of the accelerometer to the substrate being measured it is recommended that the node or external sensor if applicable be mounted with fasteners on a rigid sur
33. ctive or radiated disturbance that can create signal degradation on electrical signals including loss of data ESD Electrostatic Discharge is the sudden flow of electricity that can occur between two charged objects of different potential that come in contact or in close proximity of each other Static electricity is a common source of ESD Event Based Sampling a mode of operation in which the node sampling is started when a sensor measurement value threshold is achieved Firmware the code that is programmed onto a microcontroller or similar device in an embedded system It includes device operation commands conditions memory allocation and many other tasks Gateway The gateway is a transceiver that attaches to the host computer and provides communication between the software and the node s It is also known as a base station Host computer The host computer is the computer that orchestrates command and control of the attached devices or networks LED Light Emitting Diode is an indicator light that is used in electronic equipment LOS Line of Sight is used in radio communications to describe the ideal condition between transmitting and receiving antennas in a radio network As stated it means the antennas are in view of each other with no obstructions LXRS Lossless Extended Range Synchronized is the proprietary LORD MicroStrain data communications protocol used in the wireless sensor network NIST The Nation
34. curs putting the node back in a sample or sleep state 2 4 node is out of range Perform a bench test with the node in close proximity to the gateway to verify they are operational For range test and installation recommendations see Range Test on page 33 The system has been tested to operate with the node and gateway up to 2 km apart with clear line of sight 2 5 node is not in normal boot mode If the node status indicator shows the node booting in a mode other than the normal boot mode it can be bypassed by toggling the node ON OFF switch rapidly three times then leaving it in the ON position for normal power up In normal boot mode the communication can be established with automatic node discovery or manually once the boot process is complete and the node is in idle state Start up mode can then be changed in the software 2 6 node is sampling Observe the node status indicator LED to determine the device s state boot idle sample or sleep If the node is sampling it cannot be configured In Node Commander execute the Stop Node command to put the node in idle state W4 LORD MicroStrain A5 SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual Troubleshooting Problem Possible cause and recommended solution allowing configuration to occur 2 7 node is sleeping Observe the node status indicator LED to determine what state it is boot idle sample or sleep If the node is sleeping it cannot
35. d and Graph views g End sampling The red X is used to exit the sampling window and or end sampling W4 LORD MicroStrain ee SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual System Operational Overview l l l When synchronized sampling is set to slower sample rates it may take several seconds after sampling is initiated for the first sample to appear l l Use the view menu to select the Graph view of the data see Synchronized Sampling Graph View on page 23 Click on the node name to view the graph for that node Click again to hide it Node Commander D jt Be den ama d b NS due a d 3 Node 31463 Sync ET NE Figure 14 Synchronized Sampling Graph View a Available Nodes Click on the node to display the graph for that node Click again to hide it Right click on the node name for more menu options such as Stop Nodes and Save Stream b Axis range Select the x axis width and y axis zoom percentage or use the Auto check box for automatic scaling c Graph The node graph shows the sampled data Each active channel is displayed in a different color The x axis is time in seconds and the y axis is the A D value bits Right click on the graph for additional menu options such as View Graph Key Pan Zoom Pause and Remove Graph d View menu Select between Data Grid and Graph views W4 LORD MicroStrain SENSING SYSTEMS G Link2 LXRS
36. d as shown in Figure 24 External Accelerometer Frame Wae e Ch 2 Y sensor frame e N IRAM R gt al ka Z x e b S S We Qv e Node Orientation V Ch 3 2 Figure 23 Sensor Frame NG gt External Accel r Orientation Ch 1 Z Figure 24 External Accelerometer Frame a LU WALORD MicroStrain 31 SENSING SYSTEMS G Link29 LXRS Wireless Accelerometer Node User Manual Node Installation 4 3 Optimizing the Radio Link In ideal conditions the nodes and gateway can communicate up to two kilometers apart In order to accomplish this the node and gateway must be installed in a manner that optimizes the wireless transmission The G Link2 LXRS operates at a 2 4GHz transmission frequency The internal antenna has an omni directional radiation pattern Using any other antenna with the node will void FCC compliance The best method for ensuring optimal radio communication is to conduct an RF survey of the installation site This is easily accomplished in Node Commander by using the range test feature to quantify the radio signal strength RSSI in various scenarios See Range Test on page 33 for instructions on using Node Commander for measuring RSSI The following are general guidelines for maximizing transmission range s Establish Line of Sight LOS between the node and gateway antenna as best as possible Try to avoid obstructions between the antennas such as buildings terrain veg
37. de is an ultra low power mode The node will automatically go into sleep mode after a user settable period of inactivity The node will not go into sleep mode while sampling Active mode Node is sampling at assigned sample rate and duration Status indicator on node blinks green or blue at 1 Hz or at sample rate NODE IS SAMPLING idle or stop command start sampling command Idle mode Allows node configuration Allows toggling between sampling and sleeping modes NODE IS WAITING FOR A COMMAND Status indicator on node pulses green 1 second Sleep command or inactivity time out Idle stop or wake command Sleep mode Low power mode Checks periodically for an idle command user selectable NODE IS CONSERVING POWER interval Status indicator on node occasionally blinks green user selectable interval Figure 3 Node Operational Modes W4 LORD MicroStrain 10 SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual System Operational Overview 3 System Operational Overview The G Link29 LXRS contains an internal non rechargeable Lithium battery For important precautions see Safety Information on page 61 The G Link2 LXRS is susceptible to damage and or disruption of normal operation from Electrostatic Discharge ESD For important precautions see Safety Information on page 61 To acquire sensor data nodes are used wit
38. e KK KK KK KK KRI 48 8 4 Repair and Calibration isses IR RII e mes me els neces 50 8 5 Technical Support 51 9 Maintenance ico so en ne RCE AA 52 10 Parts and Configurations ll saa esse else K RR KK KK KK KK SR 53 10 1 Standard Nodoes AA AA 53 10 2 Node Accessories oiii PAA 54 10 3 Wireless System Equipment 200 0 sas ccc cece cee ce ceceececcececeececceceseeee 55 10 4 Product Ordering 56 11 Specifications 000000000000000 000000 aao 0AA 00a A 00DA ILDA DDAA aaa aan 57 W4 LORD MicroStrain SENSING SYSTEMS G Link29 LXRS Wireless Accelerometer Node User Manual 11 1 Physical Specifications ccc vs ccs paa ba amga paka Taha ba tape ha anana desadebbdaccdciadawcsdegcendueacsuniaousias 57 11 2 Operating Specifications ccc eee cece cece ec eeeececeeceecececceceevecseeeees 58 11 3 Radio Specifications ceca Ecos i Aa aa UA a AGA DESDE RIT lng abala KK KK KK KK KRA 60 12 Safety Information cece cece ccc ccc cece cee cece cc ec esse esse esse sse K KK KK RR 61 12 1 Battery Hazards 22 02 0000 cece ccc ccc cece cece se se se se re se KK KK se se KK seen 61 12 2 Power Supply uA 62 128 3 ESD Sensitivity ncaa gag 7 PAYLOAD AGA 2005205255855 O Sa ne ng panahanan 62 12 4 Disposal and Recycling 2 2 eee cece eee cece EE SES a E KAK KRA SS KK RR KK KK KK KK KK KI 63 AA 64 13 1 Reference Information ES
39. e minimum LORD MicroStrain will contact the customer for approval to proceed beyond the minimum with the repair replacement W4 LORD MicroStrain S SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual Troubleshooting 8 5 Technical Support There are many resources for product support found on the LORD MicroStrain website including technical notes FAQs and product manuals http www microstrain com support overview aspx For further assistance our technical support engineers are available to help with technical and applications questions Technical Support sensing support LORD com Phone 802 862 6629 Fax 802 863 4093 SKYPE microstrain wireless support Live Chat is available from the website during business hours 9 00 AM to 5 00 PM Eastern Time US amp Canada W4 LORD MicroStrain ii SENSING SYSTEMS G Link29 LXRS Wireless Accelerometer Node User Manual Maintenance 9 Maintenance The replaceable battery is the only user serviceable part in the G Link2 LXRS For instructions on how to change the battery see Internal Node Battery on page 35 For other service or repair needs contact LORD MicroStrain Technical Support see Technical Support on page 51 W4 LORD MicroStrain 52 SENSING SYSTEMS G Link29 LXRS Wireless Accelerometer Node User Manual 10 Parts and Configurations 10 1 Standard Nodes For the most current product information custom and OEM options not l
40. ering units For the G Link2 LXRS this value is provided via the factory calibration e Conversion Formula and Effective Range is the formula used to convert sensor readings to engineering units It also shows the resulting sensor measurement range f Low Pass Filter Cutoff This setting determines what sampled readings will be reported based on the frequency of the signal Any frequency above the selected setting will be omitted For best performance select a Low Pass Filter Cutoff that is no more than half of the sample rate omc n iia yl gmmg e mm m ee m ples Wireless Samples bits Communication bits a BP Conversion Coefficients Class Acceleration Units c A D Value bits Calibrated Value Bits toG Slope 0 000071 Offset 2 552365 Conversion Formula output slope bits offset Effective Range 2 552 to 2 101G Low Pass Filter Cutoff 3dB pt 500 Hz NA Figure 9 Channel Setup W4 LORD MicroStrain 18 SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual System Operational Overview 3 6 Sampling Settings Sampling settings are accessed through the Configure Node menu There is a tab for each sampling mode available for the particular node Figure 10 Sample Settings Menu The G Link2 LXRS has three primary sampling modes Synchronized Sampling Low Duty Cycle S
41. ess Accelerometer Node User Manual System Operational Overview 3 3 Gateway USB Communication The WSDA Base USB gateway is used as an example in this quick start guide For information on how to use other gateways refer to the gateway or Node Commander user manual see References on page 64 Drivers for the USB gateways are included the Node Commander software installation With the software is installed the USB gateway will be detected automatically whenever the gateway is plugged in 1 Power is applied to the gateway through the USB connection Verify the gateway status indicator is illuminated showing the gateway is connected and on 2 Open the Node Commander software ep Node Commander 3 The gateway should appear in the Controller window automatically with a communication port assignment Figure 5 USB Gateway Communication If it is not automatically discovered verify the port is active on the host computer and then remove and re insert the USB connector eine amp Base Station Com 3 Figure 5 USB Gateway Communication W4 LORD MicroStrain is SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual System Operational Overview 3 4 Connect to Nodes Several methods can be used in Node Commander to establish communication with the nodes This quick start section covers the two simplest methods adding a node by address and by using the node discovery feature 3 4 14 Adding a Node
42. etation or other physical barriers Increase the mounting height of the node to allow a clearer LOS path to the gateway Height above the ground is also important because reflections off of the ground can interfere at the receiver Generally the higher above the ground the better s Minimize Radio Frequency Interference RFI such as other equipment antennas especially those operating in the same frequency range This includes other nodes If other antennas are required nearby mount them at different heights to minimize interference Additionally the specific node frequency is selectable within its operational range using the Node Commander software Set the devices to different transmission frequencies s Minimize Electromagnetic Interference EMI such as that which is generated by power transmission equipment microwaves power supplies and other electromagnetic sources e Metal Objects in close proximity to either antenna particularly ferrous metals such as steel and iron can be problematic for wireless communications The larger the object the greater the influence W4 LORD MicroStrain na SENSING SYSTEMS G Link29 LXRS Wireless Accelerometer Node User Manual Node Installation 4 3 1 Range Test After establishing communication between node and gateway use the range test feature in Node Commander to monitor the signal strength and to optimally position the nodes gateway and antennas for installation Maximum achievable ra
43. ethod SR332 Physical Specifications Node 68 mm x 85 mm x 33 5 mm with mounting tabs external Dimensions i accelerometer option 32 mm x 21 5 mm x 16mm Node with internal accelerometer and battery 178 grams node with external accelerometer cable and battery 252 grams Environmental rating IP67 Enclosure material Aluminum and clear polycarbonate Integration Compatible gateways All WSDA base stations and gateways LORD MicroStrain accelerometer external accelerometer option M5 screw on IP67 connector external accelerometer option Wireless communication range Compatible sensors Connectors W4 LORD MicroStrain 25 SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual Specifications Parameter Specifications SensorCloud SensorConnect Node Commander Software WSDA Data Downloader Live Connect Windows XP Vista 7 compatible Data communications protocol available with EEPROM maps Software development kit SDK and sample code OS and computing platform independent http www microstrain com wireless sdk FOG U S Canada ROHS Measured with antennas elevated no obstructions and no RF interferers Actual range varies depending on conditions such as obstructions RF interference antenna height amp antenna orientation W4 LORD MicroStrain id SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual Specifications 11 3 Radio Specifica
44. face This will reduce higher frequency losses The node can be mounted in any orientation but it is recommended that it is mounted in a way that optimizes wireless communications In the G Link2 LXRS the accelerometers should be positioned as required for the application see Sensor Frame on page 31 For more information see Optimizing the Radio Link on page 32 Le 73 mm 2 86 i u 0 13 4X 94 mm Lt N E 25 mm 15 in 99 in TAY O AN 20 mm E 80 in l 81mm E LAO 2 3 19 in A amp J T P 83i i L C j Ji gt 2X 3 mm TA 12 in 16 mm U ie in l li 31 mm 1 23 in KESK Ka 33 mm External accelerometer 1 32 in if applicable fa 85 mm 3 36 in Node Figure 22 Mounting the Node W4 LORD MicroStrain m SENSING SYSTEMS G Link29 LXRS Wireless Accelerometer Node User Manual Node Installation 4 2 Sensor Frame During installation the internal or external accelerometer is oriented such that the axis are aligned appropriately for the measurement application The axis orientation is referred to as the sensor frame and is indicated on the device information label Figure 23 Sensor Frame Each axis has a corresponding channel designation in the G Link2 LXRS software see Channel Configuration on page 17 The external accelerometer has only one axis and is oriente
45. gateway have power applied and that applicable power switches are on Power is indicated on both devices by a status indicator LED no communication to the gateway or node 2 2 gateway has no communication with the computer Verify gateway communication in the software Check remove and reconnect communications and power cables as applicable e For serial gateways verify that the COM port setting e For USB gateways verify that the drivers are installed on the computer included with Node Commander and that the software has had sufficient time to detect it e For Ethernet gateways use Live Connect to verify W4 LORD MicroStrain a SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual Troubleshooting Problem Possible cause and recommended solution communications on a DHCP network Check that the extended timeouts are enabled in the Node Commander Edit gt Preferences menu under Devices Once communication has been established the network configuration can be changed 2 3 node cannot be configured Observe the node status indicator LED to determine the device s state boot idle sample or sleep If the node is sampling or sleeping it cannot be configured In Node Commander execute the Stop Node command to put the node in idle state allowing configuration to occur If the user inactivity timeout is set very low the configuration menu will have to be entered quickly before the timeout oc
46. h any LORD MicroStrain data gateway such as the WSDA Base 10x LXRS or WSDA 1500 LXRS and a software interface LORD MicroStrain has two software programs available for data acquisition from the wireless sensor network SensorCloud and Node Commander SensorCloud is an optional web based data collection visualization analysis and remote management platform based on cloud computing technology Node Commander is used for configuring gateways and nodes selecting sampling modes and parameters initializing data acquisition and viewing and saving data The operational overview describes system hardware and software setup and the basic navigation of Node Commander used to configure the node and begin data acquisition A brief overview of porting data to SensorCloud is also included This section is included as a quick start guide and is not a complete demonstration of all system and software capabilities W4 LORD MicroStrain SENSING SYSTEMS G Link29 LXRS Wireless Accelerometer Node User Manual System Operational Overview 3 1 Software Installation To install Node Commander Software Suite on the host computer run the installer executable file and follow the on screen prompts The software is provided with all gateways and is available on the LORD MicroStrain website see References on page 64 The Node Commander software includes hardware drivers required for use with USB gateways Once installed the soft
47. he bandwidth changes as nodes are added removed and settings changed f Enable Beacon on Start When synchronized sampling is started the nodes wait for the first beacon transmission to initiate sampling When this option is selected default the gateway beacon is enabled and will begin transmitting at a fixed interval when sampling is started Disabling the beacon on start unchecking the box will set the nodes to wait for the beacon but it does not actually start the beacon when sampling is started This can be used if there is a need for sampling to be initiated later or if the beacon is being received from another source than the gateway Enabling the beacon in this way is the same as enabling the beacon in the gateway menu Refer to the Node Commander User Manual for more information W4 LORD MicroStrain 2 SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual System Operational Overview g Apply settings and start sampling Before acquisition can begin use the Apply Network Settings to save the session settings to the node When completed select Start Sampling to begin h Close sampling window with the red X to exit sampling or once the sampling has been started to view the data window behind it Synchronized sampling features two data views Grid view and Graph view Once sampling has started the data grid view is the default view Figure 13 Synchronized Sampling Data View ata
48. ical 25 Hz 1 2 of dynamic range with sinusoidal input 16 bit resolution 2 g 130 u g 4Hz 10 g 420 u g Hz typical with 100 Hz anti aliasing filter setting Fifth order low pass Butterworth filter user programmable bandwidth from 26 Hz to 1 KHz Integrated Temperature Channel Integrated sensors Measurement range Accuracy and resolution Anti aliasing filter bandwidth Measurement Range 40 C to 125 C Accuracy and resolution 5 C over full range 16 bit Sampling modes Synchronized low duty cycle datalogging Continuous sampling 32 to 512 Hz Sampling rates Periodic burst sampling 32 Hz to 10 KHz Datalogging 32 Hz to 10 KHz Sample rate stabit Up to 125 nodes per RF channel and per gateway depending on the number of active channels and sampling settings EMBL See XII Refer to the system bandwidth calculator http www microstrain com configure your system Synchronization between nodes Operating Parameters Outdoor line of sight 2 km ideal 800 m typical Indoor obstructions 50 m typical 2 405 to 2 470 GHz direct sequence spread spectrum over 14 Radio frequency RF channels license free worldwide radiated power programmable transceiver carrier from 0 dBm 1 mW to 16 dBm 39 mW low power option available for use outside the U S A limited to 10 dBm 10 mW LS14500 included External 2 2 V dc to 5 V dc Power consumption Operating temperature MTBF 378 000 hours Telcordia m
49. igure 4 System Connections Nodes will communicate with any LORD MicroStrain data gateway The sensor node gateway and software selection are application dependent but the basic interfaces are the same Communication protocols between the gateway and host computer vary depending on which model gateway is used but they all require interface to a host computer or network The WSDA Base 10x LXRS gateway utilizes local serial connections to the host computer such as RS232 and USB and interfaces with the Node Commander software The WSDA 1500 LXRS gateway utilizes Ethernet communications and can be used with Node Commander and SensorCloud although system configuration is completed using Node Commander Gateways with analog outputs can be connected directly to stand alone data acquisition devices for data collection however system configuration will still occur through a USB interface to Node Commander Users can also write custom programs by utilizing the LORD MicroStrain9 Wireless Sensors Network Software Development Kit see References on page 64 node o dg f und connect external power computer or network supply optional connect external sensor external option only communication cable Ce 29 power cable as needed pd not used with USB gateways p atew a Zi g y HH Figure 4 System Connections W4 LORD MicroStrain J SENSING SYSTEMS G Link2 LXRS Wirel
50. isted below refer to the LORD MicroStrain website or contact the LORD MicroStrain Sales Department Model Number G LINK2 LXRS 2G INT G LINK2 LXRS 10G INT G LINK2 LXRS EXT 53 LORD MicroStrain Part Number Description Internal 2 gtri axial accelerometer 6305 4002 Internal temperature sensor Ruggedized housing Internal 10 gtri axial accelerometer 6305 4010 Internal temperature sensor Ruggedized housing Input for single axis accelerometer 6305 5000 Internal temperature sensor Ruggedized housing W4 LORD MicroStrain SENSING SYSTEMS Parts and Configurations G Link2 LXRS Wireless Accelerometer Node User Manual Parts and Configurations 10 2 Node Accessories The following parts are available for use with the G Link2 LXRS For the most current product information custom and OEM options not listed below refer to the LORD MicroStrain website or contact the LORD MicroStrain Sales Department See Product Ordering on page 56 LORD MicroStrain Part Number Lithium AA cell battery 2 Ah capacity 6302 0100 Description Replacement power cable connector to bare leads 9022 0052 External 2 g single axis accelerometer on six foot cable 6305 5002 External 10 gsingle axis accelerometer on six foot cable 6305 5010 Table 4 Node Accessories W4 LORD MicroStrain od SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual Parts and Configurations
51. nge is determined by the gateway and node power settings found in the device Configure menu and is highly dependent on the physical environment surrounding the devices 1 Right click on the node header and select Communicate Range Test Ei Node Conan de a Bie E view Launch Appliaon Help Communicate Configure Stop Node Load Node Information Power Management Remove Node Num Triggers 0 Figure 25 Range Test Menu 2 The total RSSI range for the node and gateway is 90 to OdBm The higher the value closer to zero the better but reliable communication can be achieved between 75 dBm and O dBm The devices is still able to communicate between 90 dBm and 75 dBm but it could be intermittent or result in data loss Position the node and gateway antennas where the best RSSI value is observed Short Packet Range Test Nede 31463 Good Pings 9070 Bad Pings 0 Success Rate 100 00 Base RSSE 12 dBm Min 12 dBm Max 10 dBm 9 999 X Node RSSI 12 dBm Min 12 dBm Max 10 dBm e Figure 26 Range Test Statistics W4 LORD MicroStrain a SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual Connecting External Sensors 5 1 Connecting External Sensors G Link2 LXRS wireless sensor nodes that are configured for the external sensor option include a connector input for connecting the external accelerometer This input only accepts
52. nications protocol WSN Wireless Sensor Network describes a distribution of sensors and data acquisition equipment that autonomously monitors environmental characteristics such as temperature pressure and strain W4 LORD MicroStrain le SENSING SYSTEMS
53. oduct for proper recycling and disposal W4 LORD MicroStrain 9 SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual Safety Information 12 2 Power Supply The G Link22 LXRS Wireless Accelerometer Node can be powered by an external source AWARNING A CAUTION TETTE Apply only the input voltage range specified for the G d Link2 LXRS Connect in the correct polarityto a power source that is near the device is accessible and adheres to all national wiring standards Compliance with wiring standards is assumed in the installation of the power source and includes protection against excessive currents short circuits and ground faults Failure to do so could result in personal injury and permanent damage to the device For details on how to connect the power supplysee Connecting an External Power Supply on page 36 12 3 ESD Sensitivity The G Link2 LXRS is susceptible to damage and or disruption of normal operation from Electrostatic Discharge ESD particularly during data acquisition AXCAUTION eye ESD damage can occur when the device is touched especially at the device interfaces such as the antenna and NI M connectors Use proper grounding techniques when Mu J A handling If an ESD event occurs and operation has been interrupted reset the device by cycling power to it and or restarting the operational mode in the system software W4 LORD MicroStrain ba SENSING SYSTEMS G Link2 LXRS
54. on and time between bursts is configurable Same as periodic burst sampling Calibration to standardize a measurement by determining the deviation standard and applying a correction or calibration factor Configuration a general term applied to the node indicating how it is set up for data acquisition It includes settings such as sampling mode and rate number of active channels channel measurement settings offsets hardware gain and calibration values Continuous Sampling a mode of operation in which the node is sampled continuously until stopped or continuously for a fixed amount of time Coordinated Universal Time UTC the primary time standard for world clocks and time It is similar to Greenwich Mean Time GMT Cycle Power a command transmitted to the node to reboot it either through a hardware or software switch Data Acquisition the process of collecting data from sensors and other devices Data Logging the process of saving acquired data to the system memory either locally on the node or remotely on the host computer W4 LORD MicroStrain ka SENSING SYSTEMS G Link29 LXRS Wireless Accelerometer Node User Manual References DHCP network Dynamic Host Configuration Protocol is the standardized networking protocol used on Internet Protocol IP networks which automatically configures devices that are attached to it by assigning and configuring the device IP address EMI Electromagnetic Interference is an indu
55. or the G Link2 LXRS are determined when the device is calibrated at the factory and they require no user adjustment When using an external accelerometer the conversion values will be provided with the device and will have to be entered for each new sensor attached to the node Three types of calibrations are available depending on the level of accuracy required for the application a standard calibration a NIST traceable or ASTM traceable calibration For more information see Parts and Configurations on page 53 and see Specifications on page 57 For applications with unique installation conditions it may be desirable to adjust the conversion offset value or perform a field calibration To determine if this is appropriate contact LORD MicroStrain Technical Support see Technical Support on page 51 The conversion values can be entered in two menus Figure 32 Abbreviated Conversion Values Menu and Figure 33 Advanced Conversion Values Menu The channel Configuration menu has more options than the Calibration Coefficients menu but both are acceptable ways to enter the values and formulas Calibration Coefficients Offset Standard y mx b 2 552365 Standard x y mx b 2 567206 Standard x y mx b 2 600181 Standard v y mx b 158 658005 Figure 32 Abbreviated Conversion Values Menu W4 LORD MicroStrain id SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual Sensor Settings and Operation
56. rd Login Don t have an account Sign Up now Figure 16 SensorCloud Log in or Register The SensorCloud interface has six main views When logging in as a registered user the Device view is the default Navigate to other views by clicking the view name at the top of the page Figure 17 SensorCloud Menu Views The Data and Settings views are only available once a device is selected from the device list Main menus GD SensorCloud DEVICES ACCOUNT CSV UPLOADER MATHENGINE 106 our Device lists select a device to access Data and Settings menus Demo Steucture 7 14 15 14 36 QAPI0039T2KSFDEX Owned Devices b N DATA JUN 18 JUL 18 I DEVICE NON CONFIGURATION LAST HEARD FROM TOTAL STORAGE USAGE ASAS N ema Basic Configuration 0 00 MP l Transactions 0 00K 25K I w063140205021034 Basic Configuration 21 14 11 30 cars ES 1 88 mop jonthly Storage 0 0 1 TIL l l I I Shared Devices DEVICE l CONFIGURATION LAST HEARD FROM I MSTest andy Configuration 7 15 15 12 02 I Frrroo1sca1c7aeo j CalFrac Heavy Loading Run Up 9 4 13 TEN configuration QAPI00C 585K4URZ I Demo Devices l DEVICE I LAST HEARD FROM Figure 17 SensorCloud Menu Views W4 LORD MicroStrain z SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual System Operational Overview Device The device list shows every Ethernet gateway and API device associated with the SensorCloud account including
57. reless Accelerometer Node User Manual Sensor Settings and Operation 7 2 Measurement Units Sensor measurement units are set in the channel Configuration menu 1 To enter the Configuration menu right click on the Node heading and select Configure gt Configure Node The Channels tab displays channel options available for the current node Channels Synchronized Samping Low Duty Cyde Dataloggng Power RE 1nfo Channel Physical Units Conversion Hardware Label Data Output Units Gain apoy ox Lea Figure 30 Channel Configuration Menu 2 Select the type of measurement from the Class menu and then select Units Slope 0 000071 Offset 2 552365 Conversion Formula output slope bits offset Effective Range 2 552 to 2 101G Low Pass Fiter Cutoff 3d8 pt Figure 31 Select Sensor Units W4 LORD MicroStrain i SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual Sensor Settings and Operation 7 3 Sensor Conversion Values The conversion values include the slope offset and formula for converting the sensor A D value bits to engineering units The bits are the digital representation of the sensor voltage output The type of sensor channel and desired engineering units determine what conversion values are available The conversion values are entered through Node Commander and saved in the node memory for the applicable channel Conversion values f
58. rostrain com wireless sensors Product Manuals and Technical Notes http www microstrain com support docs http www microstrain com support docs http www microstrain com wireless sdk Product Application Notes http www microstrain com applications NIST Calibration Procedures http www nist gov calibrations ASTM Testing Procedures http www astm org Standard standards and publications html Table 6 Related Documents W4 LORD MicroStrain S SENSING SYSTEMS G Link29 LXRS Wireless Accelerometer Node User Manual References 13 2 Glossary These terms are in common use throughout the manual A D Value the digital representation of the analog voltages in an analog to digital A D conversion The accuracy of the conversion is dependent on the resolution of the system electronics higher resolution produces a more accurate conversion Also referred to as bits ASTM The Association of Standards and Testing is a nationally accepted organization for the testing and calibration of technological devices Base Station The base station is the transceiver that attaches to the host computer and provides communication between the software and the node s It is also referred to as a gateway Bits the digital equivalent of voltage on the node See A D Value Burst Sampling a mode of operation in which the node is sampled for a fixed window of time burst and then repeats that window at set intervals The burst durati
59. ry Figure 7 Using Node Discovery 2 Using the power switch turn on the node Within a few seconds the node will transmit a message with its operating frequency 3 When the device status indicator on the node ends the rapid flash sequence and begins pulsing at one second intervals the node has completed the normal boot up sequence and is running in idle mode At this point the node should be listed in the Controller window scanning can be stopped by selecting the Stop button in the Node Discovery window Emoe XEF YE ZER YE Z Base Station Com 3 Please cycle the power on all nodes you d like Node Commander to find se Station Com 3 Discovered nodes will show up under Ba Click the stop button to leave node discovery mode El Find sampling nodes on frequency 23 Figure 7 Using Node Discovery W4 LORD MicroStrain 3e SENSING SYSTEMS G Link29 LXRS Wireless Accelerometer Node User Manual System Operational Overview 3 5 Channel Configuration The sensor settings are stored in the node memory and each sensor is assigned a corresponding channel number The configuration menus will only show the channels and configuration options that are available for the type of node being used 1 To enter the configuration menu right click on the node name and select Configure gt Configure Node The Channels tab displays channel options available for the node a Channel Enabled indicates the sensor channel number The
60. sensor axis For more information on the sensor reference frame see Sensor Frame on page 31 HERRE BE n Kona t irteral Figure 34 Gravity Offset 7 5 On board Temperature Sensor The G Link2 LXRS has solid state temperature sensor built into the accelerometer This applies to internal and external configurations The temperature sensor output is connected to channel 4 of the G Link2 LXRS e Refer to the node specification table for the temperature sensor operating parameters see Operating Specifications on page 58 W4 LORD MicroStrain ba SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual Troubleshooting 8 Troubleshooting 8 1 Troubleshooting Guide 43 1 POWER gateway or node does not turn on or node does not charge 151 node or gateway power is off nga external power off or miswired T3 wrong power supply or voltage 1 4 node battery is dead 1 5 node or gateway is damaged 2 COMMUNICATION no communication to the gateway or node DA node or gateway has no power 2 2 gateway has no com with computer 2 3 node cannot be configured 2 4 node is out of range 2 5 node is not in normal boot mode 2 6 node is sampling 2 7 node is sleeping 2 8 gateway or node is damaged
61. ser Manual Sensor Settings and Operation 7 Sensor Settings and Operation The node configuration interface includes settings for measurement units and conversion values The G Link2 LXRS internal and external sensors are calibrated at the factory and require no user adjustment of the conversion values There are preset measurement units as well as a user defined field Because the wireless sensor system is digital the analog voltage readings from the sensors are converted into a digital equivalent value based on the volt to bit scale of the internal analog to digital voltage converter A D converter Sensor readings can be displayed and recorded in A D value bits directly or further converted to engineering units by applying conversion values and a conversion formula For more information see Sensor Conversion Values on page 39 and for instruction of adjusting units see Measurement Units on page 38 7 14 Node Channels Designations Sensors are assigned to a specific channel number at the factory and cannot be changed For sensor orientation information see Sensor Frame on page 31 Channel Description accelerometer channel 1 x axis internal sensor option z axis external sensor option accelerometer channel 3 z axis internal sensor option only temperature channel Table 1 Channel Designations accelerometer channel 2 y axis internal sensor option only W4 LORD MicroStrain ud SENSING SYSTEMS G Link2 LXRS Wi
62. th the accelerometer bandwidth limit For best performance select a cutoff frequency that is no more than half of the sample rate For example if the target measurement is 100 Hz and the sample rate is set to 500 Hz set the cutoff frequency between 100 Hz and 250 Hz 7 4 Node Sampling Rates The G Link2 LXRS is capable of sampling up to 10 KHz For measuring vibration it is recommended to use a sample rate at least twice the value of the target frequency This is the minimum sample rate required to produce an accurate digital representation of the measured signal For example if the target measurement is 100 Hz the sample rate should be setto 200 Hz or higher While the G Link2 9 LXRS is capable of high sample rates and high resolution conversions the integrated accelerometer may limit performance in certain circumstances For example even though the G Link2 LXRS can sample up to 10 KHz the integrated accelerometer in the standard configuration only has a bandwidth of 100 Hz frequency Setting the node to sample at 10 KHz would result in oversampling by a factor of 100 which is well over typical practices Oversampling by a factor of 4 times is enough for most applications W4 LORD MicroStrain m SENSING SYSTEMS Sensor Settings and Operation G Link29 LXRS Wireless Accelerometer Node User Manual 7 4 8 Gravity Offset During data acquisition it is normal to see up to 1g offset due to the effects of gravity on the
63. tion When data acquisition is started each of the sampling modes has different menu options and views Some open a settings menu before data acquisition begins and may include a data list view and or a graph view The following is an example of Synchronized Sampling Figure 1 1 Starting a Sampling Session For more information about synchronized sampling and using the gateway beacon see Data Acquisition on page 20 For more information about other sampling modes refer to the Node Commander user manual see References on page 64 To start a sampling session nodes can be selected individually or as a group When selected as a group they will all be set to the same sampling mode Right click on the nodes and select Sample Synchronized Sampling Ke Base Station Com 3 sw B S Node 3141 Sample Synchronized Sampling Communicate Lew Duty Cycle Datalogging Base lt Station Com 3 m v d 46 X UI ES Sample Synchronized Sampling Communicate Low Duty Cycle Trigger Datalogging Download Triggers Figure 11 Starting a Sampling Session When a synchronized sampling session is started the sampling menu appears and includes settings to enable optional sampling features configure nodes and to specify where the data will be saved The built in bandwidth calculator displays the total bandwidth used by the nodes selected for synchronized sampling Figure 12 Synchronized Sampling Menu a
64. tions The G Link2 LXRS Wireless Accelerometer Node employs a 2 4GHz IEEE 802 15 4 compliant radio transceiver for wireless communication The radio is a direct sequence spread spectrum radio and can be configured to operate on 14 separate frequencies ranging from 2 405 GHz to 2 470 GHz Following the 802 15 4 standard these frequencies are aliased as channels 11 through 24 For all newly manufactured nodes the default setting is 2 425 GHz channel 15 For standard models radiated transmit power is programmable from 0 dBm 1 mW to 16 dBm 39 mW A low transmit power option is available for use in Europe and elsewhere and is limited to 10 dBm 10 mW The radio complies with FCC Part 15 USA and IC Canada regulations The radio is license free worldwide Using antennas and transmission equipment other than what is provided may void FCC compliance e The gateway can automatically manage nodes operating on different frequencies by using the Node Discovery feature in Node Commander In this routine the gateway listens for node broadcasts on the frequency channel to which it is set If the node is in normal boot up mode it will provide the broadcast when it is initially powered on and it will broadcast on all channels As long as the node is powered on after activating the Node Discovery feature the gateway will link to it and remember the channel setting for future node queries e Manually matching the node and gateway frequency
65. uch as the WSDA Base or WSDA 1500 LXRS Figure 1 G Link2 LXRS Wireless Accelerometer Node W4 LORD MicroStrain a SENSING SYSTEMS G Link29 LXRS Wireless Accelerometer Node User Manual Node Overview 2 1 Components List The G Link2 LXRS can be purchased with integrated accelerometers or an interface for an external accelerometer The configurations cannot be combined and the external configuration has an additional connector for the accelerometer The external accelerometer is purchased separately from the node Both configurations have an internal antenna and come with a battery and power supply cable For a complete list of available configurations accessories additional system products and ordering information see Parts and Configurations on page 53 Item Description Quantity EUN G Link2 LXRS Wireless Accelerometer Node B 3 6 Volt AA Lithium battery fd C Powersupplycabe B anaa optional external sensor configuration only User Manual Quick Start Guide and Calibration Certificate Table 1 Node Components List W4 LORD MicroStrain S SENSING SYSTEMS G Link29 LXRS Wireless Accelerometer Node User Manual Node Overview 2 2 Interface and Indicators The G Link2 LXRS includes a sensor connector external accelerometer option only a power connector and mounting holes for device installation The radio frequency RF antenna is internal to the node The node cover can
66. ware will automatically detect and configure any USB gateways that are plugged into the host computer The suite includes the following programs s Node Commander is used for configuring nodes and acquiring viewing and saving data e Live Connect is a TCP IP to serial conversion tool that translates the communications between Node Commander and an Ethernet gateway WSDA Data Downloader is used to download acquired data from the flash memory card embedded in an applicable gateway to a host computer SensorCloud is an optional data collection visualization analysis and remote management tool It is based on cloud computing technology and is accessed directly from a web connection Automatic real time data collection is available through Ethernet gateways such as the WSDA 1500 LXRS Data files can also be easily uploaded For more information see Data Handling on page 25 Users can also design custom programs with the open source data communications protocol see References on page 64 W4 LORD MicroStrain Je SENSING SYSTEMS G Link2 LXRS Wireless Accelerometer Node User Manual System Operational Overview 3 2 System Connections To acquire sensor data the following components are needed in addition to the node a LORD MicroStrain data gateway and a local or networked host computer with access to the data acquisition software such as Node Commander and SensorCloud For a connections overview refer to F

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