HEM Data Products

DAWN: Data Acquisition with In-Vehicle Networks

For the new DAWN page click here

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

Whether your application is simple or complex, there is a DAWN solution targeted to your application. DAWN models range from low cost, compact options to models with the most advanced features in the industry. Click on the pictures below to see descriptions and specifications of various models.

Mini Data Loggers

Mini-Logger Family

Advanced Data Logger

Advanced Logging


DAWN software works with any SAE J2534 compatible device that you may already own to acquire automotive and heavy duty in-vehicle network data. Some units are loggers, some only work with a PC, and many are both. Let us recommend the best hardware model based on your requirements. To discuss your application with one of our engineers, please call 800 436-4330 or email info@hemdata.com.

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.
  • Controlling a remote logger from your desk – even seeing the remote logger data in real-time in your office at a rate that is 100X faster than most other systems, resulting in faster cycle times and reduced product development time.
  • Combining the power of a data acquisition system with a scan tool’s ability to acquire a wide variety of parameters.
  • Simultaneously acquiring data from GPS, from the in-vehicle network, and analog signals directly from sensors with minimal setup time.
  • Using a logger that automatically sends data back to you after each run, saving you travel expenses.
  • Operating within a friendly, easy-to-use interface, and defining the same configurations for PC-based testing and for a stand-alone logger.

Protocols supported by DAWN

DAWN’s data acquisition conforms to a variety of standards issued by SAE and ISO including CAN, SAE J1939, J1708, SAE J1979, J1850, ISO15765, ISO9141, ISO14230 (KWP2000), and OBD-II 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

For information on advanced features of DAWN, click here.

DAWN Applications

DAWN is being used for a wide variety of vehicle testing applications. Click here for a description of the DAWN applications.


DawnEdit – Parameter and Message Database Manager

DawnEditTM, 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.


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.

Contact us to discuss your application and how DAWN can help you get the data you need. Call us at 800 436-4330 or email us at info@hemdata.com. We look forward to hearing from you.