12 reviews

OBSIDIAN®Data logger and embedded data acquisition system

OBSIDIAN® instruments are our high-end data loggers and embedded data acquisition systems based on a low-power ARM processor with Linux-based open architecture. OBSIDIAN® can act like a standalone data logger, real-time control system, and signal conditioning frontend, all at the same time. High-end multi-channel signal amplifier cards are available for voltage, current, IEPE, thermocouple, RTD, and strain gages sensors.

As with any other Dewesoft instrument, OBSIDIAN® data loggers include our award-winning DewesoftX software for signal processing and data analysis and an industry-leading 7-year warranty.



Strain and Stress

Strain and Stress

Quarter Bridge

Quarter Bridge

Half Bridge

Half Bridge

Full Bridge

Full Bridge

















CAN out

CAN out

CAN bus

CAN bus

Data logger

Data logger



-10°C to +50°C

-10°C to +50°C

OBSIDIAN® highlights

Embedded Processing

Built-in dual-core 1.5 GHz ARM processor with Linux OS and DewesoftRT is perfect for embedded applications such as data logging, cloud data collection, and real-time control.

Data Storage

4 GB of internal storage expandable with up to 1 TB via an SD card slot or a USB Type-C external HDD or SSD is useful for storing large amounts of data.

Low Power Consumption

Extremely powerful but designed to operate with very low power consumption which makes it a perfect choice for applications where power consumption is of critical importance.

High-End Signal Conditioning

OBSIDIAN data loggers work with the IOLITE high-end signal conditioning modules. Amplifiers are available for IEPE; Voltage, Current, Resistance, Strain gauge, Bridge, Digital Counters, RTDs, Thermocouples, and more.

Redundant Power Supply

Redundant power supply is seamlessly switching between available power sources and provides non-stop availability even for the most demanding test applications.

Wide Operating Temperature Range

OBSIDIAN data loggers are labeled to run at -10°C ... 50°C, but certain configurations can operate even in the -40°C ... +85°C temperature range.

External Master Mode

Instead of being used internally by Dewesoft RT, the primary EtherCAT® bus can be switched to external mode, allowing OBSIDIAN to be used like a regular IOLITE system for full-speed buffered data acquisition to a computer running DewesoftX DAQ software.

Secondary EtherCAT Bus

A secondary EtherCAT bus can be used in parallel to serve real-time data to any 3rd party control system like Labview, Beckoff, Clemessy Syclone, MTS FlexTest, Acontis, and similar EtherCAT masters.

Great Connectivity

Standard data interfaces are available to transfer the data to real-time controllers, cloud servers, Industry 4.0 clients, using a wide variety of standard data interfaces, such as EtherCAT®, OPC UA, XCP, and CAN.

Software included

Every Dewesoft data acquisition system is bundled with award-winning DewesoftX data acquisition software. The software is easy to use but very rich and deep in functionality. All software updates are free forever with no hidden licensing or yearly maintenance fees.

Dewesoft quality and 7-year warranty

Enjoy our industry-leading 7-year warranty. Our data acquisition systems are made in Europe, utilizing only the highest build quality standards. We offer free and customer-focused technical support. Your investment into the Dewesoft solutions is protected for years ahead.

Embedded Data Logger With Low-Power ARM Processor and Linux OS

For the first time in history, the Dewesoft device is hosting an embedded low-power ARM processor, and what a processor it is! Borrowed from cutting-edge technology in mobile devices, the integrated ARM CPU can perform powerful tasks, all while consuming very little power.

The ARM processor runs the brand-new Dewesoft RT data acquisition software on a Linux operating system. The combination of Linux OS, ARM CPU technology, and Dewesoft RT makes OBSIDIAN an incredibly flexible device with a range of potential uses, including stand-alone data logging applications, real-time control systems, or just a signal conditioning system with cloud or Industry 4.0 connectivity. The possibilities are unlimited, and we have only just begun!

OBSIDIAN is constantly receiving free software and firmware updates that enable new features. As always, we will be listening to our customers' needs and steering our R&D roadmap to integrate these needs. OBSIDIAN is more than just a standard data acquisition system. It is a platform that will continue to evolve and grow!

Dewesoft RT: embedded data acquisition software

OBSIDIAN data loggers run new Dewesoft RT software. It is a cross-platform embedded software that runs on the Linux operating system platform powered by the built-in ARM processor.

Dewesoft RT consists of lightweight core components for data acquisition, channel configuration, data storage, and standard interface support (XCP, CAN, USB, Ethernet, and EtherCAT). It is very flexible and expandable as its modular architecture allows it to be easily and quickly adaptable and changed for a specific application or task.

Dewesoft RT is capable of very fast data transfer, and real-time operation such as real-time control, or watchdog functionality. Dewesoft RT functionalities will grow over time based on the requirements of target applications. If you have a use case for it please contact us.

Integrated and expandable data storage

OBSIDIAN® R8 data logger has 4 GB of internal data storage that can be used to store recorded data. Additionally, all OBSIDIAN® data loggers feature two expansion slots:

  1. SD card expansion slot: allows you to insert SD card storage to the capacity of 1 TB.

  2. USB Type-C expansion port: allows for connection of external hard drives.

This transforms OBSIDIAN into a fully stand-alone data logger, where data can be logged either into an internal or externally connected SD card. 

OBSIDIAN® is able to store any number of input channels with a maximum sampling rate making it the perfect instrument for data logging applications. Stored data files can be reviewed and analyzed by anyone using the included powerful and award-winning DewesoftX data acquisition and signal processing software.

Perfect Signal Conditioning for Precise Measurements

OBSIDIAN offers great signal conditioning with its range of input and output modules. You can measure voltage, current, strain, stress, vibration, sound, temperature (thermocouples and RTDs), counters, and more.

Proven high-quality Dewesoft data acquisition hardware combined with award-winning DewesoftX data acquisition software performs data collection without losing even a single sample. It also provides great data visualization and processing capabilities.

Data can be stored in a time-series database and served to SCADA systems using standard interfaces such as OPC UA or XCP to truly support Industry 4.0 applications.

Off-the-shelf DewesoftX data acquisition software with a series of supported industry-standard interfaces makes OBSIDIAN the perfect choice for even the most price-sensitive measurement and control tasks.

OBSIDIAN amplifier modules

See the overview of the available multi-channel amplifier module cards for OBSIDIAN data loggers. All modules fit inside the OBSIDIAN box chassis and can be installed with an easy slide-in mechanism. Amplifier modules feature 24-bit ADC (analog-to-digital converter) with a 20 kS/s sampling rate per channel. All amplifier settings are software selectable per every channel.

ModuleVoltageCurrentResistanceStrainIEPEChargePTxThermocouplePotentiometerLVDTDigital inputDigital outputTEDSExcitation
IOLITE multi-channel amplifier modules

*DSI = Dewesoft Sensor Interface. Learn more about DSI adapters.

See full IOLITE technical specifications for detailed specs about the IOLITE data acquisition systems and its amplifiers.

Dual EtherCAT Data Buses for Maximum Data Integration 

OBSIDIAN data acquisition system is equipped with two fully independent EtherCAT bus systems that work in parallel.

The Primary Bus

When OBSIDIAN is switched to external master mode, the primary bus is used for perfectly timed and synchronized data acquisition. It connects to the PC running DewesoftX data acquisition software and streams any number of input and output channels at high speed to the PC's hard drive. 

The Secondary Bus

OBSIDIAN's secondary EtherCAT bus can be used in two ways:

  1. Low latency front-end interface for any 3rd party EtherCAT compatible real-time controllers.

  2. Additional bus for redundant 3rd party data acquisition system in critical DAQ applications.

Excellent Connectivity With Standard Data Interfaces and Protocols

The acquired data is available to other data systems or controllers using standard data protocols:

  • EtherCAT: an industry standard for real-time control applications. OBSIDIAN uses two EtherCAT buses in parallel. When it is switched to external master mode, the primary EtherCAT bus is used for full-speed buffered data acquisition to a computer. In contrast, the secondary bus is mainly used to serve data in real-time to any 3rd party control system.

  • OPC UA: a leading standard for Industry 4.0 applications. The data can be served to SCADA, ERPs, MES systems as well as mobile clients in real-time.

  • CAN and XCP on Ethernet: with the XCP protocol you can provide the data to ECU calibration software such as ETAS INCA or Vector CANape in real-time with minimum latency.

Redundant Power Supply

IOLITE R8 and IOLITE R12 data acquisition systems are equipped with a redundant power supply completing the feature set for the ideal and reliable front-end system. 

If the primary power supply fails, the system will be powered by a secondary power supply without any interruption or system shutdown/restart.

Merging Data Acquisition and Real-Time Control

Until the IOLITE system, the worlds of data acquisition and control were completely disconnected. Controller and PLC systems are dedicated to reacting to events as fast as possible, and recording data is a secondary concern. On the other hand, the data acquisition systems are made to acquire data as fast as possible, and doing real-time control is secondary or simply unavailable in many of them.

Very often test benches require both precise signal conditioning and processing, and real-time control. In the past, DAQ and PLCs were often connected by using an analog connection - one cable for each signal.

This is where the IOLITE system shines with the dual independent EtherCAT buses. Only one EtherCAT line is required between the PLC and DAQ. This greatly reduces cabling and eliminates redundant analog-to-digital conversion of the same signals. The worlds of control and data acquisition are combined in one elegant system.

The Endless Possibilities

IOLITE - a perfect solution for your data acquisition and control applications. And this is just the start.

With its outputs, the IOLITE data acquisition and control system totally eliminates the need for PLC hardware. Any PLC software can fully control the outputs of an IOLITE DAQ system.

Only your preferred EtherCAT-based real-time controller software is needed, and the IOLITE system can drive the actuators.

There is no longer a need for two independent systems. One system can perform everything - Dewesoft IOLITE.


Award-Winning Data Acquisition Software Included for Free

Dewesoft data acquisition systems are bundled with award-winning DewesoftX data acquisition software. It is the world's most advanced and easy-to-use data recording and signal processing software. Software and hardware work together like magic. It offers simplicity as well as deep functionality to tackle any test and measurement task.

And the best part? You get lifetime FREE software updates and technical support. Software is evolving all the time. New major releases are released every 3 months constantly adding new features, optimizations, and other improvements. There are no hidden costs and will remain free forever.

Plug and Play

Connecting the DAQ system and sensors could not be faster or easier. DewesoftX software will automatically detect the connected DAQ systems and TEDS-equipped sensors will configure the channel configuration automatically. Features like:

  • Hardware auto-detection.

  • Smart sensors.

  • Sensor database.

  • Advanced TEDS sensor support.

  • Built-in unit conversion.

  • Real-time signal preview.

  • Wiring schematics.

will make you ready for measurement in seconds. Spend less time configuring your DAQ hardware and be more productive. Time is money!

Measure and Store

Powerful storing capabilities with more than 500 MB/s sustained stream rates mean you can always store data at full speed and never again worry about losing data that could compromise your tests. DewesoftX storing features offer:

  • Real-time data acquisition.

  • Synchronized acquisition of analog, counter, video, GPS, CAN bus, and many other sources.

  • Advanced triggering and alarms.

  • Single or multi-file storage.

  • Remote and distributed network storing.

  • Automated test sequences.

Even if you store gigabytes of data, our innovative data file format​​​​​​​ will ensure you can reload and analyze your data as fast as in a blink of an eye.

Analyse and Publish

NVH, structural testing, power analysis, and more. Forget about using several complex software solutions to record and analyze your data. DewesoftX offers one-stop shop for all test and measurement tasks. Our software offers:

  • Online and offline mathematics.

  • Flexible real-time visual displays.

  • Synchronized video support.

  • PDF and Word reporting tools.

  • Data export to many standard file formats.

  • Unlimited FREE licens seats to view and analyze stored data.

DewesoftX is designed with the mindset of a test engineer and offers a complete testing solution in a single software package that is easy and joy to use.

Lifetime Free Updates

We are offering no-bluff or hidden cost licensing model for our data acquisition software. A new major version is released every three months bringing new features, performance boosts, bugfixes, with no additional cost to you. All updates for our existing users are free forever.

Unlimited License Seats

Our licensing model offers unlimited seats for analysing the recorded data. The recorded data file will bundle the license. Simply share data file with your colleagues and they can download software for free and ready to fully analyze the data. No additional licenses are needed.

Free Technical Support

We are putting our customers first. Free worldwide technical support is available for our DAQ software and hardware. Our technical support team is responsive and will attend to every support request and solve it in the fastest possible manner. Local technical support in our local offices is also available for you at no extra cost.

Lovedby Many Engineers

Again, thanks for all of the new features that are being included in DewesoftX. It is already a fantastic product and deserves to become the Microsoft Word of data acquisition software.

We absolutely enjoy using the Dewesoft data acquisition equipment and its software. I think of it as the Porsche 911 of data acquisition (my dream car/our dream test equipment).

We recommend SIRIUS data acquisition system as a great unit to anyone that asks how we like it.

I wanted to personally write to you and tell you how impressed I am with Dewesoft products. The whole Dewesoft team impressed me as extremely happy, smart, and dedicated.

FAQFrequently asked questions

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