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    Maximum 32-Channels Analog Input in a Battery-Operated Compact Chassis

    Choose from 18 types of input module and install up to 2 in a ScopeCorder at a time to configure a ScopeCorder up to 32 channels.

    • A4-sized compact chassis
    • Simultaneous isolated inputs maximum
      8-ch (1 MS/s) or 4-ch (100 MS/s)
      Scanning inputs maximum 32-ch
      (10 kS/s) or 16 channels (20 kS/s)
    • AC/DC/Battery operated

    DL350 8 Ch Chassi

    Flexible recording in a single portable tool with superior noise immunity and vibration resistance

    Flexible input

    Choose from 18 types of input modules that are compatible with other ScopeCorders

    DL350 Noise And Vibration Proof

    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.

    DL350 Vibration Resistant Design

    Operates in freezing temperatures

    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.

    DL350 Freezing Temperature

    High-speed and long-term recording using large memory and direct recording onto an SD card

    • Up to 100 Mega-points per module memory
    • Up to 50 days continuous recording onto SD card

    DL350 SD Recording

    Ease of use in the field

    • Intuitive operation using 8.4 TFT touch screen
    • A choice of two operating modes, oscilloscope or data recorder
    • DL350 Assistant Software helps configure settings and back up data on the spot

    DL350 Ease Of Use In The Field

    More than a test tool

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

    Complete self-contained signal conditioning

    Whether it is straightforward high precision voltage measurements or a blend of signals coming from such things as current probes, temperature sensors, strain gauges, accelerometers and serial buses, the DL350 can handle them all without extra boxes or cables.

    This extraordinary input capability is achieved by providing 2 slots, which can be populated with any of 18 different types of user-swappable input modules. This means, for example, that 4 isolated 16-bit voltage inputs can be measured at 1 MS/s, alongside 16 temperatures. Swap a module and measure at 100 MS/s with 12-bit and 1 kV of isolation. Meanwhile there are 16 built-in logic inputs; swap in a digital input module to add even more. Make AC measurements like a DMM with an RMS module in real-time or use a math channel after the recording is finished.

    DL350 Contained Signal Conditioning

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

    Up to 5 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.

    Accurate measurement of fast-switching waveforms

    Unique amongst portable measuring instruments, there is a high-resolution high-speed sampling module available for the DL350. This provides individually isolated 12-bit, 100 MS/s inputs, which can precisely measure and record transient waveforms superimposed on slower signals. For example, transients occurring on inverter outputs, or the edges of control signals, which are beyond the reach of traditional handheld test tools.

    DL350 Switching Waveform

    Comprehensive testing made easy

    Full recording flexibility

    For users who are more familiar with chart recorders than with long memory oscilloscopes, the DL350 offers a choice of operating modes. Recorder mode is suitable for long-term continuous recording for a specific duration and where the sampling interval is specified. A setup wizard can be used in this mode to quickly guide the operator through the entire setup process.

    DL350 Recording Flexibility

    Scope mode enables the DL350 to be used just like an oscilloscope with all the associated benefits, such as comprehensive triggering and flexible memory use. Using the history memory enables up to 1,000 separate triggered acquisitions to be captured to the internal memory and viewed afterwards. Thus the causes and effects of abnormalities can be carefully analyzed as easily as paging through a photo album.

    DL350 Recodring Flexibility 2

    Intuitive operation

    An 8.4-inch resistive touch screen has been adopted in order to deliver superior noise-free performance. In environments with the highest levels of electrical noise such as motors and inverters, measurement precision is maintained while enabling the unit to be operated by using (gloved) fingers or stylus.

    DL350 Intuitive Operation

    Even when the backlight is switched off and the touch screen is inactive the user still has access to the START/STOP, manual trigger and data saving keys. For users unfamiliar with state-of-the-art measuring instruments, there is also help at hand via the built-in digital manual.

    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

    External sampling clock and triggers

    The DL350 is first and foremost a field tool, however it still provides the functionality you expect in a bench instrument. The sampling clock, trigger and start/stop controls are all available as external signals. For example, a rotary angle encoder or degree wheel can be used as the sample clock to analyze engine rotation and performance.

    DL350 External Sampling Clock


    Input modules used in the DL350 ScopeCorder are compatible with the DL850E and DL850EV ScopeCorders, and the SL1000. The DL350 inherits the technological developments of more than 30 years of commitment to the measurement needs of electromechanical systems.

    isoPROTM – pioneering measurement technology

    Input modules are powered by YOKOGAWA’s isoPRO™ technology, which offers industry-leading isolation performance at the highest speeds. isoPRO™ core technology, designed with energy-saving applications in mind, delivers the performance needed to develop high-efficiency inverters that operate at high voltages, large currents and high frequency.

    The use of optical fibers enables the achievement of high speed data transmission and high voltage isolation.

    DL350 ScopeCorder Module Demo Board IMG 4029 Edit

    Higher voltage registration and better CMRR

    720268 High Voltage Input Module The new high-Voltage, high-resolution, 1 MS/s 16 bit Isolation Module (model 720268), which is also capable of direct RMS measurements, has an improved sample rate (1 MS/s) and an improved maximum input voltage (1000 Vrms).

    Normally, to realize high insulation performance in a small package, it is necessary to raise the input impedance and lower the voltage of the internal circuit. However the increase in input impedance causes a reduction in the common-mode rejection ratio (CMRR) and measurement accuracy.

    Thanks to the new digital isolator in this module, high voltage input signals can be acquired without an increase in size. High insulation performance is maintained without compromising the CMRR.

    DL350 High Voltage Module

    Consistent measurement results in R&D and maintenance

    Traditionally different measuring instruments of various sizes and capabilities are used in the R&D lab and in the field. Since the accuracy, noise immunity and other characteristics are not the same, engineers struggle to correlate measurements.

    The plug-in modules of the DL350 are common* to those of the DL850E and DL850EV, the higher-end ScopeCorder models. By using common* modules for product design, validation and on-site maintenance, the high quality of the measurements is consistent.

    *With some exceptions

    DL350 ScopeCorder Diagram

    Extensive line-up: high-speed, high voltage, analog and digital

    DL350 Fast Sampling

    100 MS/s Input Module720211

    100MS/s Sampling
    12 bit Resolution
    1 kV isolated input

    DL350 High Voltage

    High Voltage Input Module

    Conforms to 1000 Vrms
    CAT II and 600 Vrms CAT III
    Great for maintenance of 
    power distribution equipment

    DL350 In Vehicle Communication

    CAN Bus Monitor Module 

    Decode CAN bus messages and display them as trends on-screen



    PC data and setup file management

    DL350 Assistant software —Free 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.

    Remote waveform monitoring and instrument control

    Xwirepuller —Free Software—

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

    Display and analysis of recorded waveforms

    Xviewer LITE —Free Software—

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

    DL350 Xviewer LITE

    Xviewer —Advanced Software—

    In addition to the features of XViewer LITE, parameter measurement, statistical analysis, FFT and filtering on downloaded DL350 Data can be performed.

    Free Xviewer trial

    Get the free 30 day trial version of Xviewer at

    The application solver

    Using different modules and accessories, the DL350 ScopeCorder addresses the complex measurement and analysis needs of widely diverse applications in the field.

    Examples of complex measurements

    DL350 Application

    In-vehicle testing

    CAN bus, LIN bus and SENT monitoring

    Use the DL350 with /VE option and bus monitor module to decode CAN 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.


    The symbol editor is a software tool that makes it possible to define which physical values from the CAN or LIN bus data frame will be trended as waveform data on the display of the DL350. The Symbol Editor can accept vehicle-installed definition files such as CAN DBC or LIN LDF.

    DL350 CAN LIN SENT 2

    Electric vehicle inverter voltage evaluation

    The voltage fluctuations of the input and output of the inverter can be measured alongside the trends of speed, acceleration and braking from the data on the CAN bus.

    Up to 2.5 hours of continuous data can be directly recorded to the SD card with sample rates up to 200 kS/s.

    The optional rechargeable battery pack enables the DL350 to be continuously operated without burdening the in-vehicle power supply.

    The optional GPS unit* adds coordinate information to the recording data to enable the measurements to be correlated with the location of the vehicle in a drive test.

    DL350 Electric Vehicle Inverter

    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
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