Microstrain Little Sensors. Big Ideas.

WIRELESS networks

WSDA® -Base-102 -LXRS®

Microstrain WSDA-Base 102 Serial

Wireless RS-232 Base Station

LORD MicroStrain’s WSDA® -Base -102 -LXRS® Wireless RS-232 Base Station provides seamless communication between wireless nodes and a host PC, single board computer or microcontroller.  Connectivity between the WSDA-Base-102-LXRS™ and host computer is supported via RS-232 cable. 

Microstrain WSDA-Base 102 Serial

Wireless Simplicity, Hardwired Reliability

  • Dependable data with 100% throughput under most operating conditions
  • Scalable, extended range wireless sensor communication
  • Collects high-speed, synchronized data

Ease of Use

  • Quick deployment with RS-232 host computer interface connection
  • Accepts all LORD MicroStrain® LXRS™ and legacy sensor nodes

Cost Effective

  • Manage thousands of wireless sensors on a single gateway
  • System solutions support rapid time to market
  • Aggressive volume discount schedule
Node support V-Link®-LXRS™, SG-Link®-LXRS™, G-Link®-LXRS™, DVRT-Link™-LXRS™, TC-Link®-6CH-LXRS™, TC-Link®-1CH-LXRS™, EH-Link®, SG-Link®-OEM-LS, SG-Link®-OEM-LXRS™, HS-Link®-S-100 kHz, TC-Link® OEM, ENV-Link™-Mini-LXRS™, all legacy 2.4 GHz wireless nodes
Host communication interface RS-232 @ 115,200 (except synchronized sampling) and 921,600 bps
Communication cable pin terminal to DB9
Power auxiliary @ 3.6 to 13.0 volts DC
Power consumption 62.6 mA - 8 active node channels operating at 256 Hz Synchronized Sampling; 45.7 mA - Idle
Radio frequency (RF) transceiver carrier 2.4 GHz direct sequence spread spectrum, license free worldwide (2.405 to 2.480 GHz) – 16 channels, radiated power programmable from 0 dBm (1 mW) to 16 dBm (39 mW); European models limited to 10 dBm (10 mW)
RF data packet standard IEEE 802.15.4, open communication architecture
Range for bi-directional RF link programmable communication range from 70 meters to 2 kilometers
Node synchronization 1 Hz beacon provides ± 32 μsec node to node synchronization
Status LED multi-color LED signals activity status
Operating temperature -40 °C to +85 °C electronics only; -30 °C to +70 ° with standard enclosure
Dimensions 97 mm x 70 mm x 20 mm without antenna
Weight 131 grams
Enclosure material black anodized aluminum
Software Node Commander® (Windows XP/Vista/7 compatible)
Software development kit (SDK) includes data communications protocol, EEPROM maps and sample code (OS and computing platform independent)
FCC ID XJQMSLINK0001
IC ID 8505A-MSLINK0001

#1544: What is the Float function in the analog pairing screen of Node Commander?

In Node Commander software, on the analog pairing screen, there is a check box for "Float". What is the function of this check box?

If the node is configured to send data to the base station in floating point mode, you need to enable this checkbox and set the 0-3 volt scaling.

 

 

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#1543: What inertial data quantities are available in the WSDA-RGD?

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.

 

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#1542: How do I calculate the battery life for a wireless node?

As a general rule, you can calculate the battery life of a wireless node by dividing the amp hours of charge on the battery by the amps consumed during sampling.

Using the V-Link-LXRS as an example, we read in the data sheet (http://files.microstrain.com/V-Link_LXRS_datasheet.pdf) that the internal rechargeable battery has a nominal charge of 650 mAh (milliamp hours).  We next go to the V-Link-LXRS power profile (http://files.microstrain.com/V-Link-LXRS-Power-Profile.pdf) and we read that the V-Link-LXRS consumes 12.816 mA when sampling a 350 ohm strain gauge on 1 channel at 128 Hz.  By dividing 650 mAh by 12.816 mA, we find that the battery will last approximately 50 hours before needing recharge.

 

 

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#1541: I have an older wireless node. Will this node work with my newer LXRS base station?

Yes!

However, new LXRS functions such as synchronized sampling, beaconing, etc. will not be available for your older node.

 

 

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#1491: Why are radio channels 25 and 26 missing on my wireless sensor data aggregator (WSDA gateway)?

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).

With the introduction of our LXRS radio technology, and its accompanying increase in radio strength and signal distance, the channel 25 radio frequency (2.475 GHz) and the channel 26 radio frequency (2.480 GHz) created harmonics on the edge of the Zigbee band that precludes their use.

All wireless products, both older and new, continue to support 14 channels running from channel 11 to channel 24.

 

 

 

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#1490: Why are radio channels 25 and 26 missing on my wireless base station?

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).

With the introduction of our LXRS radio technology, and its accompanying increase in radio strength and signal distance, the channel 25 radio frequency (2.475 GHz) and the channel 26 radio frequency (2.480 GHz) created harmonics on the edge of the Zigbee band that precludes their use.

All wireless products, both older and new, continue to support 14 channels running from channel 11 to channel 24.

 

 

 

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#1489: Why are radio channels 25 and 26 missing on my wireless node?

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).

With the introduction of our LXRS radio technology, and its accompanying increase in radio strength and signal distance, the channel 25 radio frequency (2.475 GHz) and the channel 26 radio frequency (2.480 GHz) created harmonics on the edge of the Zigbee band that precludes their use.

All wireless products, both older and new, continue to support 14 channels running from channel 11 to channel 24.

 

 

 

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#1488: What radio frequency is my wireless sensor data aggregator (WSDA gateway) on?

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.

 

Direct link: view

#1487: What radio frequency is my wireless base station on?

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.

 

Direct link: view

#1486: What radio frequency is my wireless node on?

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.

 

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#1475: How do I output a 4 to 20 mA current loop with the analog base station?

The LORD MicroStrain® WSDA-Base-101-LXRS Wireless Analog Output Base Station supports all data acquisition sessions between wireless nodes and host computers including Synchronized Sampling (both Continuous and Burst modes), Armed Datalogging, Datalogging, Streaming and Low Duty Cycle. As an integral feature, the WSDA-Base-101-LXRS has an analog output back panel that supports analog data acquisition equipment (DAQs). Up to 8 sensor channels from one or multiple wireless nodes can be fed into a DAQ with simultaneous digital feed into a PC, or into a DAQ with the PC removed (stand-alone configuration). Each channel on the back panel has a 0 to 3 volt range representing the particular sensor’s full scale output. In some environments and with some equipment, the 0 to 3 volt range is not appropriate; many types of programmable logic controllers (PLCs) and DAQs have only current loop inputs, are therefore incompatible with voltage output sensors, and require a 4 to 20 mA output range to operate. This technical note demonstrates how to convert the 0 to 3 volt output to a 4 to 20 mA output using a third party converter and assumes familiarity with the WSDA-Base-101-LXRS, LORD MicroStrain wireless nodes and Node Commander software.

Click here.

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#1342: How do I repair or return a LORD MicroStrain® product?

In order to return any LORD MicroStrain® product either for repair or return, you must contact us for a Return Merchandise Authorization number (RMA). If you purchased directly from LORD MicroStrain® in the United States, please contact your Sales or Support Engineer to obtain an RMA.  If you purchased directly from a LORD MicroStrain® distributor, please contact your distributor to obtain an RMA.

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#1340: Where do I purchase LORD MicroStrain® products?

If you are located in the United States, LORD MicroStrain® supplies you directly.  If you are in located in another country, LORD MicroStrain® products are available exclusively from LORD MicroStrain® distributors.  Please use this locator to determine your distributor: http://www.microstrain.com/support/international

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#1339: Does LORD MicroStrain® provide a trial period for its products?

To enable customers to try our standard products risk free, LORD MicroStrain® offers a 30 day return on the purchase of a starter kit. In order to take advantage of this offer, a purchase order or payment for the starter kit is required when the order is placed. 30 day trial details may be found at: http://www.microstrain.com/support/warranty

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#1338: How do I get support for my LORD MicroStrain® products?

LORD MicroStrain® Support Engineers are always available to support you in any way we can by phone, email, SKYPE or Live Chat from our home page.  Contact details may be found at: http://www.microstrain.com/support/contact-support

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#1337: What is the shipping policy for LORD MicroStrain® products?

LORD MicroStrain® insures all products shipments to their full value unless the customer specifically states a different method.

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#1336: What is the warranty for LORD MicroStrain® products?

LORD MicroStrain® warrants its standard products to be free from defective material and workmanship for a period of one (1) year from the original date of purchase.  Warranty details may be found at: http://www.microstrain.com/support/warranty

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#1330: How do I make the data file timestamp human readable in Microsoft Excel?

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.

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#1291: How do you change the radio channel on a wireless node and wireless base station?

Changing a radio channel on your wireless node and wireless base station is accomplished through Node Commander software.  Follow the four step process outlined below to update your radio channel (frequency) setting.  Note that radio channels on both your wireless node and wireless base station must match to establish network communication.

To change node/base station radio channel:

  1. Right-click Base Station/Node.
  2. Click Configure. 
  3. Click Frequency.
  4. Click Channel, e.g. 24 (2.470 GHz).
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#1142: What is the rate at which data is downloaded from a wireless node's memory?

The wireless node's effective download rate is ~9.2 kBps, or 73.6 kbps.  In perfect wireless conditions, a node's full 2MB memory can be downloaded in approximately 3.7 minutes.  While 250 kbps is the radio transmission rate, there are others variables that factor into the effective download rate including memory read time, packet overhead, radio acknowledgments, and base station to PC communication.   

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#496: What radios are used in LORD MicroStrain® Wireless Sensor Networks?

The gateways (base stations and WSDA-1000) and the wireless nodes employ radios with these general specifications (see the individual product data sheet for any variations):

Radio frequency (RF) transceiver carrier 2.4 GHz direct sequence spread spectrum, license free worldwide (2.405 to 2.480 GHz) – 16 channels, radiated power programmable from 0 dBm (1 mW) to 16 dBm (39 mW); European models limited to 10 dBm (10 mW)
RF data packet standard IEEE 802.15.4, open communication architecture
RF data downloading 8 minutes to download full memory
Range for bi-directional RF link programmable communication range from 70 meters to 2 kilometers

 

 

 

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#494: Where would I find white papers describing the use of Wireless Sensor Networks?

White papers are posted at: http://www.microstrain.com/white-papers.aspx

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#493: What is the difference between finite sampling and continuous sampling?

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.

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#492: What data acquisition modes are available on Wireless Sensor Networks?

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.

 

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Buy

How To Order

To discuss configuration for your specific system requirements, please use our contact sales page.

For large quantity orders or OEM discussions, please contact Michael_Robinson@LORD.COM.

If you are outside the US, please contact one of our distributors.

Highlighted Documents

Applications

  • Health Monitoring of Vehicles & Structures
  • Condition-Based Monitoring of Machines
  • Rotating Component Health
  • Experimental Test and Measurement
  • System Control

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