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SE3 LabVIEW Driver

DriveTest provides code for National Instruments LabVIEW for use of SE3 devices. This code comes as LabVIEW VIs in a Packed Library.

Internally, the VIs are based on the SE3 .net DLL. The deployment system must be able to execute Microsoft .net assemblies. Also, a license is required to use the LabVIEW driver.

Library Details

  • .net Version: 4.5.0

Supported LabVIEW Versions

Version 1.0 1.1
LV2017 SP1 supported, Download supported, Download

Version History

  • 1.1
    • Release: 03.05.2019
    • Initial release
    • Data type of output “samples” of VI “read measurements” changed from array of I32 to array of DBL, unit is 1 N
    • SE3 Library.lvlibp version
    • SE3 Library.dll version
  • 1.0
    • Release: 23.07.2018
    • Initial release
    • SE3 Library.lvlibp version
    • SE3 Library.dll version
    • known issues:
      • Data unit of output “samples” of VI “read measurements” is 1/16 N, not 1 N


This driver is meant to leverage streaming of force measurements with DriveTest SE3 devices in customer LabVIEW applications. Streaming is available at several data rates.

The driver is not capable of permanently changing the configuration of SE3 devices. For this purpose use the program DriveTest PinchPilot. SE3 LabVIEW Driver assumes that the SE3 device is correctly configured.


  • Does not need National Instruments NI-VISA driver. Serial communication is handled by .net Framework
  • Can run multiple instances in parallel
  • Provides SE3 Serial Number and Firmware version with
  • Optional tara after start of measurement
  • Data rates in samples per second: 1.9, 3.8, 7.8, 15.6, 31.2, 62.5, 125, 250, 500, 1000


The following applies to version 1.0 only

The driver requires a license to be used. This is enforced by an entitlement management system, which has to be installed on the target system. Plase download and run the following installer in order to use SE3 LabVIEW Driver. After installation, activation is required, as described in the DriveTest Licensing Manual.

DriveTest License Installer v1.1

Theory of Operation

The driver follows an approach similar to other drivers:

  1. Connect to the device
  2. Start Measurement
  3. Periodically read data
  4. Stop Measurement
  5. Disconnect device

USB Settings

DriveTest SE3 force meter devices use a USB-to-Serial conversion chip from FTDI. The driver for this chip is included in Windows (7 and later). In Windows, the force meter appears as a serial COM Port.

When streaming measurement data from the force meter device at high sample rates (>250 samples per second), USB settings for the force meter COM port have to be tweaked.

Open Windows Device Manager

In Windows Device Manager:

  • Go to branch “Ports”
  • Right click “USB Serial Port” device to open the context menu. If not sure which one to select, disconnect SE3 device and see which device disappears.
  • From the context menu, select “Properties”

USB Serial Port Properties

In the Properties dialog that has opened:

  • Select tab “Port Settings”
  • Click button “Advanced…”

Advanced Settings for COMx

In the Advanced Settings dialog that has opened:

  • Frame “USB Transfer Sizes”, Drop-Down button “Receive (Bytes)”, select “64”
  • Frame “USB Transfer Sizes”, Drop-Down button “Transmit (Bytes)”, select “64”
  • Frame “BM Options”, Drop-Down button “Latency Timer (msec)”, select “1”

Close all dialog windows with "OK" Button

se3lv/se3lv.txt · Last modified: 2019/05/03 11:43 by fabian