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Model DI-149 - Discontinued (Please consider DI-2108)

Eight-channel USB Data Acquisition Starter Kit

Out of
  • Includes a DI-149 instrument, a 6-foot USB cable, a screwdriver for signal connections, and downloadable WinDaq software
  • Direct replacement for the DI-148 data acquisition starter kit (compare)
  • Low-cost, Compact USB Data Acquisition Starter Kit
  • Eight ±10 V Differential Analog Input
  • Analog Inputs Protected to ±150V peak transient (one minute or less); ±75V peak continuous
  • 10-bit Resolution
  • Up to 10 kHz Sample Throughput Rate (11 kHz for 11 enabled channels - 8 analog and 3 digital)
  • Unlock code required for sample rates over 240 Hz only when using WinDaq software
  • 4 Digital Inputs including counter and frequency inputs
  • Provided with WinDaq Software
  • Optional WinDaq/HS Software for turnkey high speed sampling
  • CE Approved
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DI-149 Starter Kit DAQ
This data logger is manufactured in the United States of America


The DI-149 is a new product for general-purpose data acquisition applications in a long line of low-cost starter kits from DATAQ Instruments. Suitable for measuring preamplified analog signals, the DI-149 in tandem with the included WinDaq software allows real time data acquisition, playback, and analysis performance equal to or better than other products that cost ten times or more than its low price. Predecessors of this instrument have been sold to thousands of hobbyists and professionals for countless data acquisition applications around the world. The DI-149 continues this legacy with noise-cancelling differential analog inputs that are transient-protected to ±150 VDC or peak AC. This tough and tolerant starter kit is an eight-channel version of the popular DI-145, with some enhanced capability.

The DI-149 offers eight analog inputs and four each discrete (digital) input and output channels. Two of the digital inputs (bits D2 and D3) can be used to measure rate up to 10 kHz and counts up to 16,383. The analog inputs offer a fixed measurement range of ±10 VFS at 10 bits of resolution. Sample rates as slow as 11.44 Hz (0.3052 Hz when using WinDaq software) and as fast as 10 kHz (divided by the number of enabled channels) are supported. Included WinDaq software allows a real time display of any combination of analog, digital, or counter/timer channels, and the ability to stream acquired data to disk in recorder-like fashion. Two digital inputs may be used for remote stop/start and remote event operations using WinDaq software. WinDaq also includes software to review recorded data files, including waveform analysis and data file export to Microsoft Excel and other applications.

The DI-149 is supplied with WinDaq software, which limits total sample throughput to 240 Hz or lower. An unlock code for higher speeds allows the DI-149 to operate at 10 kHz. No throughput restrictions exist at the programming level.



DI-149 High Speed Unlock Code

WinDaq Unlock Code


Unlocks WinDaq to allow recording speeds up to 10 kHz throughput. Unlock Code ONLY. No CD will be shipped. Please Note: If you are ordering this software for a device you already own, you MUST provide the serial number of your device under "Order Notes" during checkout to receive the unlock code. Please allow one (1) business day for processing.


4-20mA Current Loop Shunt Resistor

$ 2.99
R250 Shunt Resistor


250 Ω ±0.1% Precision, Metal Film, 1/2W, Axial Resistor
Exceptionally low noise; typically 0.10 μV/V
Low voltage coefficient to ±5 ppm/V
Flame retardant coating. RoHS compliant. Learn More


USB Ferrite Choke

Ferrite Choke


Ferrite choke reduces interference for USB-based data acquisition products.



Data Acquisition Recording and Playback Software

Included FREE with your Dataq Instruments hardware purchase. 240Hz maximum sample rate. For higher rates purchase the unlock code under the Accessories tab.

WinDaq Data Acquisition Software


Solutions for .NET Programming Environments

FREE .Net control communicates directly with your DATAQ Instruments device using any .Net programming language. Detailed sample programs included. Fully documented help file. Requires .NET Version 4



Drivers only Download

Installs drivers for all contemporary data acquisition hardware products that support WinDaq software.

Starter Kit Drivers


WinDaq-to-Excel Real Time Link

Real-time data logging directly to Microsoft Excel (supports MS Office 2003 or higher). No programming required. Free Trial Version. Purchase full version on WinDaq/XL product page.

WinDaq Data Acquisition Software

MATLAB Example Program

Program in Protocol Level

Learn how to program with MATLAB® in protocol level. Does not require MathWorks' Data Acquisition Toolbox.



Introduction to the DI-149 USB Data Acquisition Starter Kit
Overview of the DI-149

Introducing the DATAQ Instruments DI-149 USB Data Acquisition Starter Kit
How to Use the DATAQ Instruments DI-149 Rate Channel
Rate Channel

Learn how to Use the DI-149 Rate Channel to Acquire Frequency Data
How to Use the DATAQ Instruments DI-149 Counter Channel
Counter Channel

Learn how to Use the DATAQ Instruments DI-149 Counter Channel
Exporting Data to Excel
Export data to Excel

Learn how to export data from WinDaq Waveform Browser to Microsoft Excel.
Introduction to WinDaq Data Acquisition Software
WinDaq Data Acquisition Software

Introduction to WinDaq Data Acquisition Software.