WDF File Access Library - Waveform Data

WDF File Access Library - Waveform Data:

This software offers API (Application Program Interface) for acquiring data from waveform data files (WDF) saved on the measurement instrument.

What is a Data Waveform?

Waveforms graph signal changes over time, such as alternating current or voltage.


This software enables the following functions. Please refer to Chapter4.3 (API Detailed Specification) for details.

  • Getting Measuring Date/Time
  • Getting Measuring Trace(Channel) Information
  • Getting Measuring Points
  • Getting Time Data/Measuring Data
  • Getting Units of Time Axis/Measuring Axis
  • Getting Resolutions of Time Axis/Measuring Axis

Applicable Model

DL350, DL850EV, DL850E, DL850V, DL850, DL950, DLM3000, DLM5000, DLM5000HD
Applicable DL850 series firmware version is 3.01 or later

Software Structure

This software is composed of the following software packages.

  • WDF File Access Library User’s Manual(this manual)
  • API Related files
    File Name Content
    ****.dll WDF File Access Library Body
    ****.lib DLL Import Library
    WDFAPIPublic.h Header file of Prototype Declaration
    WDFAPIWrapper.cpp Sample Code by Explicit DLL Linking

System Condition

Operating System
Windows 10(32bit/64bit)

Core2Duo 2GHz or faster

1GB (2GB or more recommended)

Application Developing Environment
VisualStudio 2017 or later

Version Date Contents
Ver Oct 2, 2023
  • Support for the DLM5000HD.
Ver Apr 14, 2023
  • Support for timestamp format of 720245 for ScopeCorder.
  • Add sample programs in C# and Python.
Ver May 19, 2022
  • Fixed some minor bugs
Ver May 11, 2021
  • Support for DL950, DLM5000
Ver Dec 27, 2018
  • Support for DLM3000
Ver Nov 14, 2017
  • DL850 Series firmware Ver 3.01 to 4.11
  • DL350 firmware Ver 1.01 or later

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