NEW VERSION
There is a new version of this product available. The product on this page has been discontinued and the datasheet and manual are provided for informational purposes.
Product no longer stocked – limited availability
Contact for pricing and lead time--a minimum order quantity may apply
Contact for pricing and lead time--a minimum order quantity may apply
The G-Link® -LXRS® is a low-cost integrated accelerometer node with ± 2 or ±10 g measurement range and many sampling options.
Product Highlights
- On-board high-speed triaxial ± 2 g or ± 10 g MEMS accelerometer with an internal temperature sensor
- Wireless framework is ideal for measuring vibration, tilt, inclination, and acceleration in remote applications.
- Supports continuous, burst, and event-triggered sampling and datalogging to internal memory
- User-programmable sample rates up to 4096 Hz
- 2 MB on-board non-volatile data storage
- Simultaneously transmit real-time data and log to memory.
- IP65/66 environmental enclosures available
Wireless Simplicity, Hardwired Reliability
High Performance
- Node-to-node synchronization up to ±32 microseconds
- Scalable, long range wireless sensor networks up to 2 km
- Lossless data throughput under most operating conditions
Ease of Use
- Rapid deployment with wireless framework
- Low power consumption allows extended use.
- Remotely configure nodes, acquire and view sensor data with Node Commander®.
- Optional web-based SensorCloud™ interface optimizes data storage, viewing, and analysis.
- Easy integration via comprehensive SDK
Cost Effective
- Reduction of costs associated with wiring
- Volume discounts
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General |
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|---|---|
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Integrated sensors |
Triaxial MEMS accelerometer, 3 channels Internal temperature, 1 channel |
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Data storage capacity |
2 M bytes (up to 1,000,000 data points, data type dependent) |
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Accelerometer Channels |
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Measurement range |
± 2 g or ± 10 g standard |
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Accelerometer bandwidth |
0 Hz to 500 Hz |
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Accuracy |
10 mg |
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Resolution |
12 bit |
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Anti-aliasing filter bandwidth |
Single-pole Butterworth, -3 dB cutoff at 500 Hz (factory adjustable) |
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Integrated Temperature Channel |
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Measurement Range |
-40 °C to 70 °C |
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Accuracy and resolution |
± 2 °C (at 25 °C) typical , 12 bit |
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Sampling |
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Sampling modes |
Synchronized, low duty cycle, datalogging |
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Sampling rates |
Continuous sampling: 1 sample/hourto 512 Hz Periodic burst sampling: 32 Hz to 4096 Hz (1 channel) Datalogging: 32 Hz to 4096 Hz (1 channel) |
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Sample rate stability |
± 3 ppm |
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Network capacity |
Up to 2000 nodes per RF channel (and per gateway) depending on the number of active channels and sampling settings. Refer to the system bandwidth calculator: http://www.microstrain.com/configure-your-system |
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Synchronization between nodes |
± 32 μsec |
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Operating Parameters |
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Radio frequency (RF) transceiver carrier |
2.405 to 2.470 GHz direct sequence spread spectrum over 14 channels, license free worldwide, radiated power programmable 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) |
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Range for bi-directional RF link |
70 m to 2 km line of sight with RF power setting |
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RF communication protocol |
IEEE 802.15.4 |
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RF data downloading |
4.5 minutes to download full memory |
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Power source |
Internal: 3.7 V dc,220 mAh, rechargeable lithium polymer batteryExternal: 3.2 V dc to 9 V dc |
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Power consumption |
See power profile : |
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Operating temperature |
-20 ˚C to + 60 ˚C (extended temperature range available with custom battery/enclosure, -40 ˚C to + 85 ˚C electronics only) |
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Acceleration limit |
500 g (high g option available) |
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Physical Specifications |
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Dimensions |
58 mm x 43 mm x 21 mm with mounting tabs |
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Weight |
40 grams |
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Environmental rating |
Indoor use (IP65/66 enclosures available) |
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Enclosure material |
ABS plastic |
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Integration |
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Compatible gateways |
All WSDA® base stations and gateways |
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Software |
SensorCloud™, Node Commander®, WSDA® Data Downloader, Live Connect™, Windows XP/Vista/7 compatible |
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Software development |
Open-source MicroStrain Communications Library (MSCL) with sample code available in C++,Python,and.NET formats (OS and computing platform independent) http://lord-microstrain.github.io/MSCL/ |
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Regulatory compliance |
FCC (U.S.), IC (Canada), ROHS |
General Documentation
- G-Link®-LXRS® Product Datasheet
- G-Link®-LXRS® Quick Start Guide
- G-Link®-LXRS® User Manual
- Node Commander Wireless Sensing Software User Manual
- Wireless Products Comparison
Technical Notes
- G-Link®-LXRS®Factory Calibration Options
- Powering a Wireless Node with Sources Greater Than 9 Volts
- LXRS® Firmware Upgrades
- Outputting a 4 to 20 mA Current Loop
- Battery Use and Replacement
- IP and NEMA Rated Enclosures for Wireless Nodes
- Using a G-Link®-LXRS™ as a Dual Axis Tilt Sensor
- G-Link®-LXRS™ Power Profile
- Wireless Sensor Node Power Profiles
- Using External Power With Wireless Sensor Nodes
- Synchronized Sampling on Startup
Mechanical Drawings (Uncontrolled)
- G-Link®-2G-LXRS® Dimensional Drawing
- G-Link®-10G-LXRS® Dimensional Drawing
- 6306-0100 G-Link-IP66-ENCL
- 6306-0200 G-Link-IP66-XL-ENCL
- 6306-0300 G-Link-IP65-XXL-ENCL
- 6306-0100 IP66/NEMA4X Enclosure for G-Link®-LXRS®
- 6306-0200 IP66/NEMA4X Enclosure for G-Link®-LXRS® (1 battery)
- 6306-0300 IP65/NEMA4X Enclosure for G-Link®-LXRS® (3 batteries)
Videos
What is Multipath?
Multipath is the phenomenon whereby a radio signal arrives at a receiver’s antenna by more than one path. This occurs by the reflection, diffraction, or scattering of radio waves from atmospheric ducting, reflection from water bodies or terrestrial objects (like mountains), etc.
Does Multipath impact signal strength?
Yes, multipath propagation of radio signals causes fading of the transmitted signal, which can be indicated by fluctuations in signal strength when received by the signal receiver.
How do I mitigate Multipath?
Pe-position base station or node to mitigate possible multipath interference.
Ensure a clear path to the antenna for the strongest signal, enhancing the strength of the strongest signal AND reducing the strength of the weaker signals.
Learn More: Mutipath Propagation
The WSDA-RGD (with internal GX3 inertial sensor) is configured to produce the following messages on startup.
GPS Data (1 Hz):
- UTC Time
- LLH Position
- NED Velocity
AHRS Data (100 Hz):
- Euler Angles
From this output the WSDA logs:
GPS (1 Hz):
- latitude
- longitude
- height above ellipsoid
- height above MSL
- horizontal accuracy
- vertical accuracy
- speed
AHRS (100 Hz):
- roll
- pitch
- yaw
The WSDA-RGD does not log any data until it gets a valid time, if it is set to get time from GPS only it will not log any output from the GX3 until the UTC timestamp from the GX3 is valid, even though the GX3 is producing valid AHRS data.
This data is not user configurable and is not available as a live stream through LiveConnect.
All LORD MicroStrain wireless sensor nodes, wireless base stations, and wireless sensor data aggregators are shipped from the factory with their radio frequency set to channel 15 (2.425 GHz).
This channel setting was established during 2012.
Previously all wireless products were set to channel 25 (2.475 GHz).
If you are mixing new nodes and base stations with older nodes and base stations, please be cognizant of these different channel settings.
The Node Discovery function of Node Commander will help you sort out which nodes are on what channels; Node Discovery is channel independent and allows the base station to communicate with any node, no matter what channel it is on
Sampling methods such as synchronized sampling, low duty cycle, network broadcast, etc. require that all nodes are on the same frequency so you will want to insure that you have adjusted the channels settings of the nodes to suit.
Microsoft Excel displays the timestamp contained in the wireless node data files incorrectly. If you were to open the CSV file with Microsoft Notepad, you will see that the timestamp is shown properly. In order to get Excel to show the human readable time, follow the below procedure:
- Highlight all of column A (column with the timestamp)
- Right click on highlighted region and select Format cells...
- Select the Number Tab in the window that open and choose Custom from the Category box
- Scroll to the bottom of the list in the Type box, find this entry: m/d/yyyy h:mm and click it
- Add to the entry an :ss.000 so it now looks like this: m/d/yyyy h:mm:ss.000
- Click OK
The timestamp will now be correct.
The wireless nodes all have 2 Mbytes of datalogging memory. This 2 Mbytes is organized into 8,191 ‘pages’ of memory, each page holds 132 data points. The maximum number of data points that can be held in memory can be calculated as follows: 8,191 pages x 132 data points/page = 1,081,212 total data points.
Now the question arises, ‘how long can a node datalog before its memory is full?’. The answer is that it varies depending on how many channels are being sampled and what sampling rate has been set. Here are two examples:
Let’s set a V-Link-LXRS so that channel 1 is active with a datalogging sampling rate of 2048 samples per second and we launch continuous datalogging. Our calculation would be:
- 1 channel x 2,048 samples per second = 2,048 data points per second
- 1,081,212 data points / 2,048 data points per second = 527 seconds
- 527 seconds / 60 seconds per minute = ~9 minutes to fill the memory
Let’s set a G-Link-LXRS so that channels 1, 2 and 3 are active with a datalogging sampling rate of 32 samples per second and we launch continuous datalogging. Our calculation would be:
- 3 channels x 32 samples per second = 96 data points per second
- 1,081,212 data points / 96 data points per second = 11,262 seconds
- 11,262 seconds / 60 seconds per minute = ~187 minutes to fill the memory
In FINITE sampling, the user sets a total number of samples to be taken which equates to a time period. Because the sampling rate per second is known, the user can adjust the number of samples to be taken to determine how long the sampling period will be.
In CONTINUOUS sampling, the user does not set the total number of samples and therefore does not set the time of the sampling period. By selecting CONTINUOUS sampling, the user is instructing the system to sample data until the user manually stops the sampling (via software), the power is cycled, the on-board datalogging memory is full, the battery dies, the power fails, etc.
LORD MicroStrain® Wireless Sensor Networks provide several data acquisition modes including:
- Synchronized Sampling
- Armed Datalogging
- Streaming
- Duty Cycle
See the particular wireless node for specifics.
