DL350 Portable ScopeCorder

The DL350 Portable ScopeCorder combines all the measurement and recording capabilities you need when you are away from your office or lab - all in one compact instrument.

Featuring a resistive touch screen, the DL350 provides the flexibility you need when you need it. Whether you are recording high-speed transients or long-term signals, using “quick and simple” setup or advanced features, the DL350 makes complete measurements completely portable.

Transient recording and complete data measurement in one compact solution

As the portable instrument in Yokogawa’s ScopeCorder family, the DL350 offers:


  • A4-sized compact chassis
  • Battery power for 3.5 hours
  • Resistive touch screen
  • Memory recorder mode for easy data logging setup


  • GPS recording: longitude, latitude, velocity, and more
  • Designed for vehicle testing
  • Records to SD cards


  • Compatible with 19 different input modules
  • Up to 8 channels analog inputs
  • Up to 100 MS/s sampling rate
  • Up to 16-bit analog resolution


Flexible and swappable input modules with built-in signal conditioning

Choose from 20 types of input modules and install up to 2 in the DL350 Portable ScopeCorder at a time to capture up to 32 channels plus 16 built-in channels of digital input. Input types include:

  • Voltage & Currents
  • Sensor Outputs
  • Temperature, Vibration/Acceleration, Strain, Frequency
  • Logic Signals & CAN / CAN FD / LIN and SENT

DL350 Noise And Vibration Proof

Use it like a data acquisition system or a long memory oscilloscope

Up to 20 Gpoints* of data per module can be recorded directly to an SD card. This means that the DL350 can be used for continuous recording for up to 50 days. For high speed signals, up to 100 M points per module of internal memory is available to capture fast transients. This is up to 10,000 times more than other portable oscilloscopes or test tools and thus signals can be captured with higher sample rates or for much longer periods.

* The firmware version 1.20 or later is required.

Verify power line quality using harmonic, power or FFT analysis

The power in single- and 3-phase systems can be evaluated. Additionally for fundamental waveforms of 50 or 60 Hz, up to 40 harmonic orders can be analyzed. Alternatively use the suite of FFT functions to perform full frequency analysis.

DL350 Harmonic Bar Graph

Harmonics analysis (bar graph)

DL350 FFT Analysi

FFT analysis

Environmental features for portability

Vibration resistant
Instruments used for in-vehicle driving tests or field maintenance must be able to make reliable measurements. The DL350 has an aluminum inner frame and an external rubber bumper and conforms to the Japanese JIS D1601 standard for resisting in-vehicle shock and vibration.

Wide Temperature Range
Even when used with the rechargeable battery, the DL350 will operate in temperatures from 0 to 45 degrees. The DL350 brings high-quality laboratory measurements into the harsh environments of the field.

A wealth of triggers for fault finding

The user has a choice of a simple level trigger or can use enhanced triggers such as pulse width, waveform period and triggers across multiple channels. For example, the wave window trigger is ideal for AC power line monitoring which enables voltage sags, surges, spikes, phase shifts or drop outs to be easily captured (available for 40 to 1,000 Hz waveforms).

Leave a DL350 unattended and automatically save the waveform to a file or send a notification email if and when it triggers.

DL350 Trigger

Vehicle Edition

The ScopeCorder Vehicle Edition is designed for engineers working in the automotive and railway industry, providing a thorough insight into the dynamic behavior of the electromechanical system. This integrated approach results in considerable time saving compared to using multiple separate instruments.

Download the eBook to learn more. 

In-vehicle Testing

CAN/CAN FD bus, LIN bus and SENT monitoring

Use the DL350 with /VE option and bus monitor module to decode CAN/CAN FD bus, LIN bus or SENT signals and display information such as engine temperature, vehicle speed and brake pedal position as trend waveforms and compare this with the analog data coming from the actual sensors. This enables automotive engineers to gain an insight into the dynamic behavior of the complete electromechanical system.


Memory recorder mode simplifies data recording for maintenance and monitoring tasks.

The DL350 offers a choice of operating modes, including recorder mode, which makes it easier than ever to set up long-term data recordings. Choose Easy Setup, and the setup wizard quickly guides the operator through the entire setup process. Just select the desired channels, recording duration, and sampling interval, and press Start!

Choosing Easy Setup opens a guided, three-step process to begin recording for up to 50 days.

monitoring tasks


Use the touchscreen during recording to scroll across the entire data set.



Long-Term Temperature Monitoring

Using the DL350 Memory Recorder Mode Easy Setup, combined with a 16-channel thermocouple input, it's easy to record hours, days, or weeks of data with a few simple settings.


Examples of Complex Measurements

Field Application Purpose Measurement Item User Advantages
Slot 1 Slot 2
EV (electric vehicle) Evaluation of battery
voltage fluctuation
while driving
Battery voltage CAN/CAN FD communication data Small size, battery drive,
synchronization with GPS*
position and time data
Power tool Evaluation of
practical behavior
Battery voltage, motor rotation pulse Tool vibration Small size, battery drive,
complex measurement of
voltage and vibration
Field device Maintenance of
vortex flow meter
Sensor receiving wave,
receiving pulse
Gate signal Small size, 2-way power
source, long-term monitoring
with long memory
Factory/plant Power quality
AC power,
voltage, current
Auxiliary power
source monitor
Small, portable, window
trigger (instantaneous power
failure, sag detection)
Steel making
Paper making
Rolling process
Thickness gauge
Temperature High noise immunity,
external clock (roller)


Logging GPS and Analog Data

Combining position, altitude, and motion data with precise timing, location-based data acquisition is easy with the DL350.

Combining Motion and Analog Measurements

Capture data from motion accelerometers synchronized with other analog data. The DL350 series ScopeCorder features input modules and functions to make this possible.



Power Line Monitoring in Plants and Factories

By using a wave-window trigger, voltage sags, surges, spikes and dropouts can be detected and captured.

Multi-phase voltages up to 1 kVrms and 1.4 kV peak can be recorded using 720268 high-voltage isolation modules.

In the case of unattended operation, waveforms can be saved, or an e-mail sent, when the DL350 is triggered.

DL350 Power Line

Industrial robot maintenance

It is possible to monitor and record the control signals to the servomotors and their speed and torque at the same time.

For condition monitoring, FFT analysis can be used on the vibration signals from accelerometers to help identify potential failures in machines or components.

Remote operation is available using the ‘assistant software’ or the input/output terminals making it potentially safer to use.

DL350 Robot Maintenance

Additional Option License for DL350

This is a software license allowing users to add “vehicle edition”, a software option for the DL350 ScopeCorder, by themselves after purchasing the main unit.

PC data and setup file management

DL350 Assistant software
Data files or setup configuration files stored in the DL350 SD card can be backed up with the press of a button. Remote setting, start-stop control and setup file editing can also be easily done on the connected PC.

Download free software.

Remote waveform monitoring and instrument control

Remote control and waveform display monitoring of a DL350 via USB or Ethernet.

Download free software.

Display and analysis of recorded waveforms

DL350 Xviewer LITE Xviewer LITE
Load waveforms captured by the DL350 and display, zoom, and export the data to the popular CSV format.

Download free software.

The full version of XViewer also enables parameter measurement, statistical analysis, FFT, and filtering.

Download 30-day trial software.

LabVIEW Driver for DL350
National Instruments LabVIEW Driver for DL350 is available.

Download free software.

WDF File Access Library
WDF File Access Library is the API to access waveform data files saved in WDF format.
* VisualStudio 2008 SP1 is required to use this software.

Download free software.

MATLAB WDF Access Toolbox
MATLAB WDF Access Toolbox enables the access to waveform data files saved in WDF format on MATLAB.
To control the instruments on MATLAB, please use Instrument Control Toolbox provided by MathWorks.

Download free software.

DIAdem Data Plugin
Use the data plugin to load DL350 measurement data and GPS data (latitude, longitude, altitude, speed and motion direction) into NI DIAdem.

Download free data plugin.

DL350 Connection Interface

DL350 Connection Interface 2

LCA  Compared to the reference product DL850E, CO2 emission was reduced by about 70%.

PDFResults of Life Cycle Assessment

How can I capture data from motion sensors synchronized with other analog data? The Yokogawa ScopeCorder series of instruments feature input modules and functions to make this possible. 


Testing actuation of a side impact airbag to measure the optimal timing.


This comprehensive training module covers the following topics:

  • Introduction & Product Familiarization
  • Basic Features
  • Advanced Features
  • Step-by-Step Video Demonstrations of Features

This training module covers the following topics:

  • Introduction & Installation 
  • Basics of Xviewer
  • Advanced features
  • Video Demonstrations 

Product Overviews



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