LORD MicroStrain’s WSDA® -Base -101 -LXRS® is a USB operated gateway with eight analog outputs that relay data collected from any sensors within its local network.

Product Highlights

  • Data acquisition gateway collects synchronized data from scalable networks of wireless sensors
  • Quick deployment with USB host computer interface
  • Supports up to eight channels of analog outputs to data acquisition equipment (DAQ) from multiple nodes
  • Can be used as a stand-alone device or simultaneously with a host computer
  • Compatible with all LORD MicroStrain® sensor nodes
Datasheet Manual Software
Where to Buy?
U.S. International OEM

List Price:

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

  • Supports eight-channel connection with analog DAQ’s
  • Stand alone operation using front panel buttons
  • Remotely configure nodes, acquire and view sensor data with SensorConnect
  • Data visualization through web-based SensorCloud™ portal provides quick data navigation and analysis
  • Easy integration via comprehensive SDK

Cost Effective

  • Thousands of sensors managed from a single gateway
  • Out-of-the box wireless sensing solution reduces development and deployment time.
  • Volume discounts




USB 2.0 virtual serial communication @ 921,600 bps

Analog Outputs

Analog output

Eight channels, 0 to 3 V dc, 1 analog update indicator channel and 1 input/output pulse per second channel, supports streaming and low duty cycle data collection

Analog stand alone operation

Front panel buttons provide access to most software functions including trigger, sleep, beacon and more

Analog low pass filter

-3 dB cutoff @ 375 Hz

Zero scale error + 5 mV (typical), + 20 mV (maximum)
Full scale error - 4.5 mV (typical), - 30 mV (maximum)
Zero to full scale error ± 3 mV (maximum)


Supported node sampling modes

Synchronized, low duty cycle, continuous, periodic burst, event-triggered, and datalogging (analog output support in low duty cycle mode only)

Synchronization beacon interval

1 Hz beacon provides ± 32 μsec node-to-node synchronization

Synchronization beacon stability

± 3 ppm

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

Operating Parameters

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)

RF communication protocol

IEEE 802.15.4

Range for bi-directional RF link

70 m to 2 km line of sight with RF power setting

Power source

Screw terminal connector: 3.6 to 13.0 V dc, USB port: 5 V dc standard

Power consumption

Idle: 45.7 mA; Eight active node channels operating at 256 Hz low duty cycle: 65.6 mA

Operating temperature

-40 °C to + 85 °C (electronics)

-30 °C to +70 °C (enclosure/antenna)

Physical Specifications


128 mm x 70 mm x 20 mm without antenna


140 grams

Enclosure material

Black anodized aluminum



Micro-USB, screw terminal block

Communications cable

USB standard to USB micro-B (3 foot cable included in starter kit)

Front panel interface

Buttons for controlling node operation and sampling

Compatible sensor nodes

All LXRS® sensor nodes, all legacy 2.4 GHz nodes


Firmware upgradeable through software interface


SensorCloud™, SensorConnect™, Node Commander®, Windows 7 (or newer)

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/

Regulatory compliance

FCC (U.S.), IC (Canada), ROHS


There is no self-test function on the WSDA-Base-101 Analog Base Station to test the analog outputs.

However, each channel can be tested by using whatever wireless node you have.

Using Node Commander software, confirm that any given channel on whatever wirelees node you have is working.

From there, reconfigure the sensor channel with Node Commander so that the output in Node Commander is VOLTS.

Again using Node Commander, direct the sensor output in VOLTS to each of the output channels on the backplane of the analog base station.

Using your DAQ, multi-meter or other analog measurement system, confirm that the analog voltage output matches the digital voltage output as reported by Node Commander.

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.

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.

Yes, the WSDA-Base-101 can indeed be powered by both power sources at the same time.  The base station will use whatever power source has the higher voltage.

Please refer to page 29 of the WSDA-Base-101 user manual: http://files.microstrain.com/WSDA-Base-101-Analog-Output-Base-Station-User-Guide.pdf

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.


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