WPI EVOM3 - Appendix C: Continuous Recording Via USB (Python) on a PC

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36 World Precision Instruments

APPENDIX C: CONTINUOUS RECORDING VIA USB

(PYTHON) ON A PC

The program on the USB thumb drive is a self-executing program to record serial data

through a USB cable to a Window PC computer. This is intended to record continuous

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• Python.exe Python recording program and other support folders for

Windows

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• WPI_EVOMCNX_3.E.py Python EVOM3 USB digital recording program

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NOTE: An out of resistance range indication on the EVOM3 screen will show -----.

The Python output will list -99999.9. If you are using a lower range (10K or 50K), stop

the output (X), increase the range and restart. The maximum resistance level that the

EVOM3 can measure is 10,5000 ohms.

Running the External Data Connection Output

Program (PC, Mac, Linux)

Windows 8 or above users:

WPI provides a USB keydrive (also known as a thumb drive) with all the software

needed to run the External Data Output program. To use these programs:

1. Connect the EVOM3 to the USB port of the PC. The active remote connection

port for the EVOM3 service port is in the back of the unit as a USB-B connector [

marked in red].

Fig. 50—Plug the USB-B (red) connector into the port on the back of the EVOM3.

The plug-and-play service from Microsoft should install the driver automatically,

however if a driver is not found, there is a driver in the folder on the USB drive

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2. Plug the USB thumb drive into a USB slot on your PC. If your PC does not have a

spare USB slot, you will have use the Windows option [B] below.

3. Open a Windows Explorer window and navigate to the USB thumb drive folder on

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ports in use and inform you as to which port the EVOM3 is connected.