Data Acquisition with In-Vehicle Networks: data logger, OBD, CAN bus, J1939, vehicle data & testing

By: Hem Data  11-11-2011
Keywords: Data Acquisition, Data Logger, Data Acquisition System

What is DAWN?

DAWNTM acquires OBD and other CAN bus data from in-vehicle networks in cars, trucks, buses, and off-road vehicles combining the power and flexibility of these tools:

DAWN can be any one of these tools or a combination to meet the requirements of your applications.

DAWN Models

Mini-Logger Family

Advanced Logging


The Power of DAWN

DAWN will facilitate your data acquisition with flexibility and versatility you may never have experienced. Imagine:

  • Walking up to any vehicle, plugging into its network and collecting data whether it is an automotive or heavy duty vehicle.
  • Using an optional stand-alone data logger for unmanned applications or a laptop for real-time displays.
  • Combining the power of a data acquisition system with a scan tool’s ability to acquire a wide variety of parameters.
  • Using a logger that automatically sends data back to you after each run, saving you travel expenses.

Protocols supported by DAWN

DAWN’s data acquisition conforms to a variety of standards issued by and including allowing you to collect network data from any automobile on the road today starting from model year 1996.

DAWNTM also acquires J1939 CAN and J1708/J1587 data from heavy duty vehicles, including trucks, buses, and off-road vehicles for agriculture, construction and marine applications.

Plus – with DAWNTM you can simultaneously acquire data from GPS, in-vehicle networks and directly from sensors – so you can get the data you need regardless of its source.

Advanced DAWN Features

DAWN Applications

DawnEdit – Parameter and Message Database Manager

TM, creates, edits, and imports different corporate database formats into a single coherent database. You can create and maintain as many databases as your project requires.

DAWN Builds on Snap-Master’s Proven Track Record

DAWN is built on HEM Data’s award winning software, providing you with all of the data acquisition, real-time analysis, plotting, storage/retrieval, and post analysis capabilities. This solid software platform allows DAWN to integrate data acquisition with a variety of display types, including Y-T & X-Y plots, stripcharts, and digital, dial and bar meters plus indicators.

What DAWN can do for you

Whether you’re an engineer, technician or fleet manager, DAWN offers a complete solution designed for your specific data acquisition needs providing productivity improvement through its ability to capture data from the in-vehicle network, GPS, and directly from sensors as needed. The combined functionality of a data acquisition system, scan tool, and a stand-alone data logger and event recorder means we have the functionality you need.

Keywords: Data Acquisition, Data Acquisition System, Data Logger,

Other products and services from Hem Data


HEM Data Products: Snap-Master, SnapMaster, DAWN, NOVA

SnapMaster is powerful data acquisition, analysis, display, and storage software for Microsoft Windows XP, 2000, NT, Me, and 98. Check out the hardware support for HEM Data’s software products. DAWN is the premier in-vehicle network data acquisition system.


Snap-Master: SnapMaster, PC-based data acquisition & analysis

Choose from a variety of display types with advanced features like strip-chart emulation, multiple y-axes, data cursors and text markers to visually mark important data points. Comma separated variable file support lets you import or export data to other programs, and the built-in binary format is great for high speed data storage.


NOVA: noise & vibration analyzer, order tracking, band analysis, impact testing, transfer function

By combining the best signal conditioning and acquisition hardware with HEM Data’s software designed especially for noise and vibration analysis, NOVA offers a powerful, yet compact, lightweight, portable analyzer. Housed in rugged enclosures with a footprint smaller than a laptop, you can design a system with channel counts ranging from 2 to 64 channels and bandwidth up to 25kHz per channel.