DL850/DL850V SCOPECORDER
The DL850 ScopeCorder Series are modular, waveform recording instruments that can measure voltage, current, strain, acceleration, and other phenomena-- simultaneously.With high speed sampling, high isolation withstand voltage, and multichannel measurements, the DL850 Series offers powerful support in the development, evaluation, and quality control of energy efficient devices.
What's New
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Details
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Features
Introducing Our Ultra-Fast Memory Recorder
- High-speed (up to 100 MS/s), High Resolution (up to 16-bit), Isolated (up to 1kV*1)
- Multi-channel, up to 128 Voltage/Temperature or 128 logic bits
- Continuous hard disk recording at 100 kS/s simultaneously on 16 channels*2
- CAN and LIN buses monitoring and trend waveform display (DL850V only)
- 17 plug-in modules
*2. With the /HD0 or /HD1 option
The DL850 ScopeCorder Series are modular, waveform recording instruments that can measure voltage, current, strain, acceleration, and other phenomena-- simultaneously. With high speed sampling, high isolation withstand voltage, and multichannel measurements, the DL850 Series offers powerful support in the development, evaluation, and quality control of energy efficient devices.
For increasingly fast inverter signals
High speed (100 MS/s), High resolution (12-bit), 1kV isolated measurements.*Yokogawa's isoPRO technology offers industry-leading isolation performance at the highest speeds. The isoPRO core technology is designed with energy savings applications in mind. It gives you the performance needed to develop high efficiency inverters, which employ high voltages, large currents, and high operating speeds.
Example - Measuring Inverter Output
Accurately observe inverter startup waveforms with sufficient time resolution. You can confirm that no excessive overshoots occured.
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High Speed & High Withstand Voltage Isolation Technology | |
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Using high speed optical fiber-based transmissions, the module achieves high speed ADC clock and data isolation. 720210 High-speed 100 MS/s 12-Bit Isolation Module(Max. four(4) modules can be installed in a main unit.) |
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Rising waveform not completely captured
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Rising waveform accurately captured
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17 plug-in modules allow for flexible assorted measurements.
The lineup includes two new module types: A 16-CH Temp./Voltage Input Module, and a CAN & LIN Bus Monitor Module (DL850V only). All DL850 modules can be combined with measurement modules from the DL750 series products:
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Note: The firmware version 2.00 or later is required when using the 16-CH Temp./Voltage Input Module(720221) and/or CAN&LIN Bus Monitor Module(720241).
Advanced - Even More Measurement Points - Up to 128 CH of voltage input and 128 bits of logic input
The 16-CH Voltage Input Module (scanner type*) can measure at 10 kS/s sample rate even when using all 16 channels. With this module populating all 8 input module slots, the DL850 performs 128-CH voltage measurements.
The Logic Input Module supports everything from TTL levels, to high voltage contact closures at up to 10 MS/s*. With eight logic modules, the DL850 can monitor and capture 128 bits of logic.
Example: Measuring the startup sequence of a multi-output power source
Power supplies used in home computing electronics have many outputs, and it is necessary to control the sequences from output to output. With a multichannel module, you are not limited to voltage measurements; a single unit can also measure everything from PC control signals to AC fan operation, individual component temperatures, and slow to high-speed signals. |
Ch 1: AC Input Voltage Ch 6: Supply Voltage Ch 2: Reference Voltage Ch 3: Reset Signal  Ch 1: Fan Rotation 16-bit logic: Control Signals 4-bit logic: Serial Communication
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Catch transients in durability with high-speed sampling - Dual Capture
To visualize long term trends in durability testing and other situations, data is typically acquired at low-speed sample rates. On the other hand, suddenly-occurring transitional phenomena should be captured at high-speed sample rates.The "Dual Capture" feature resolves these conflicting requirements by recording at two different sampling rates.
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Zoom Waveform - You can record up to 5,000 phenomena of high speed trigger measurements (up to 100 MS/s) at a record length of 5-500 kPoints while taking trend measurements at up to 100 kS/s.
- Event Waveform -Displays the timing at which high speed "sub" waveforms are acquired
- Low Speed Main Waveform - Max: 100 kS/s Trend waveform displayed in a low-speed Roll mode
- Capture Waveform - Max 100 MS/s Capture transients with high speed trigger measurement
Parts used in automobiles and other transportation vehicles must be highly reliable. The "Dual Capture" function is very effective when performing vibration testing of connectors under varying temperatures.
- Chattering is accurately captured at high-speed sampling
- Check the frequency of occurence at low-speed sampling
Functions1
Recall Past Waveforms - History Function
When you spot an abnormal phenomenon during repetitive high speed measurements, often the anomaly has disappeared from the screen by the time you press Stop.
Always active, the "History" function automatically divides the long memory into up to 5,000 "history waveforms" that can be redisplayed at any time.
 To extract abnormal waveforms
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Searching history waveforms
When you want to extract abnormal phenomena exclusively, you can perform condition-based searches of the history waveforms. You can create a rectangular zone on screen and extract only waveforms that pass through or do not pass through the zone. You can also extract data based on amplitude and other parameters.
To check the history... |
You can display all past waveforms, and view a list of acquisition times at min 1µs resolution |
| Key Point The History function requires no action during measurement. You can recall data at any time after measurement has been completed. Once waveforms have been recalled, you can zoom locations of interest or perform parameter measurements. |
Armed with an array of trigger functions
Simple & Enhanced Triggers
The DL offers easy-to-use "Simple" triggers, or lets you combine various "Enhanced" triggers for even more advanced capturing.
Enhanced trigger conditions are set up intuitively in advanced, easy-to-understand graphical user interface
- Edge: Trigger on a single trigger source condition (rising, falling, rising/falling)
- Time: Trigger at a specified time or fixed interval
- A -> B(N): Trigger when condition B is true N times after condition A becomes true
- A Delay B: After condition A becomes true, trigger the first time condition B becomes true after a set time has passed
- Edge On A: Trigger on an OR condition of an edge trigger while the A trigger is true.
- OR: Trigger if at least one trigger condition of multiple trigger sources is true
- AND: Trigger if all trigger conditions of multiple trigger sources are true
- Period: Trigger when a condition regarding the waveform period becomes true
- Pulse Width: Trigger on a condition relating a pulse width condition being true with a specified time width condition.
- Wave Window: Trigger when the signal passes outside of an real time template "Wave Window"
Wave Window Trigger
The Wave Window trigger is useful for diagnosing typical power supply troubles such as momentary loss, sags, and surges. It can also detect frequency changes, voltage drops, and other phenomena, with support for AC waveforms of 40 to 1,000 Hz. A reference waveform (Real time template) is compared with the current waveform, and a trigger activates if the current waveform falls outside of the allowable range. The reference waveform is generated automatically from the previous waveform in real time.
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*The Wave Window is not displayed on the display. |
Action ON Trigger
To capture infrequently occurring phenomena, you can use an "Action ON Trigger" to perform multiple actions that are specified in advance when a trigger occurs.
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You can specify "e-mail transmission" for immediate notification in a remote location when a phenomenon occurs. |
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Superior Noise Rejection
Excellent noise rejection performance is achieved through meticulous low-noise design. Floating voltage switching waveforms in inverter circuits can also be captured with precision.
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Example: Measuring inverter gate signals |
 Model 701250 Voltage Input Module
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Functions2
Processes Noise Rejection and Executes Power Computations in Real Time - Realtime Math (/G3 option)
The DL850 is armed with a dedicated DSP (digital signal processor) for computations that enables between-channel math during waveform capture. These between-channel computations are powerful because they can be set up separately from fi lter computations. In addition to FIR, IIR, Gauss, and moving average digital fi lters, you can use maximum 35 equations such as arithmetic with coefficients, integrals and differentials, and higher-order equations.- Display any combination of measured and math waveforms (up to 16 total).
- You can assign channels without modules.
| Example: 3-Phase Power Computation | |
| Power is calculated as the integral of the product of voltage and current over time (an average based on the period). Using the Realtime Math function, you can display 3-phase 4-wire power waveforms in real time. |  |
| Key Point Computations occur in real time even when in Roll mode. Computed waveforms can also be used to activate triggers. Any vacant slots (CHs) can be utilized for the realtime math defi nition. Consequently, precomputation waveform and postcomputation waveform can be displyed simultaneously. |
A wealth of functions gets you right to the waveform you want - User Defined Computation (/G2 option)
The DL comes standard with arithmetic, time shift, FFT, and other computations that enable you to display waveforms with offsets and skew corrections. And with user defi ned computations (/G2 option), you can create equations using a combination of differentials and integrals, digital fi lters, and a wealth of other functions.User Defined Computation Setup Screen
| Example: Amplitude Analysis Using FFT | |
| With the User Defi ned Computation function(option) included, you can perform various-types of FFT analysis using two FFT windows. In applications such as vibration and shock tests, you can easily evaluate abnormal vibrations while simultaneously measuring other signals. |  |
| Key Point You can assign a log scale to the frequency axis. |
Automatically extract waveform amplitude, frequency, and other parameters - Waveform parameter and statistical computation
Extract and display up to 32 parameters (amplitude, frequency, etc. including delay) simultaneously. Menus can be shown as lists of easy-to-read icons.
| Statistical Computation | |
| The DL can automatically extract cycle waveforms and find the standard deviation and other statistics. Computations can be performed on history waveforms as well. |  |
Detect Abnormal Waveforms, Notify Users, and Determine Pass/Fail - Go/NO-GO Determination
The DL can determine whether waveforms or computed values of waveform parameters meet (GO) or do not meet (NO-GO) conditions that are specifi ed in advance. Upon judgment of the measured results, a pre-set action is performed and users are notified that an abnormal waveform was observed, along with the pass/faildetermination. This is a very useful function for such things as studying signals from manufacturing lines of electronic devices and tracing abnormal phenomena.
| Example: Evaluating Motor Startup Characteristics | |
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Parameter measurement is taken of the time until reaching a reference RPM after motor start, and the subsequent GO/NO-GO (pass/fail) determination is made. |
Synchronize Multiple Units Performing Simultaneous Measurements - IRIG input (/C20 option)
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Synchronized measurement across multiple DL850 units is made possible by inputting an IRIG time code signal.* The DL850/ DL850V's internal clock is also synchronized (locked) to the IRIG signal. Therefore, timing comparisons are highly precise even when continuously recording over long periods of time. |
| Key Point You can make periodic observations remotely by connecting commercially available GPS receivers that have IRIG output and using the Time Trigger function. |
Example: Synchronous measurements for large transport vehicles Simultaneously measuring both tips of airplane wings, or between railroad cars requires synchronizing multiple measuring instruments in time. With a single IRIG cable, the acquisition time of all data is made the same.
*IRIG (Inter-Range Instrumentation Group) started as an American military standard, and is now used in data recorders in the aerospace industry. The carrier frequency is a 1 kHz/10 kHz ASK (amplitude shift keying) modulating signal with a synchronizing precision of as high as 1 µs. DL850 support formats: A002, B002, A132, B122
The Flexibility of an External Hard Drive - External Hard Drive Interface (/HD0 option)
| With an external hard drive interface, you can connect a commercially available eSATA standard hard drive. The DL can record to an external drive in real time just like it can with the built-in hard drive. After saving waveforms, you can switch the DL850/DL850V from the PC to the external drive and use the waveform data immediately. |  |
Key Point
* The speed of realtime hard drive saving depends on the performance of the hard drive. |
Check the Relationship between Hysteresis and Phase - XY Display Function
You can confirm the relationship between two signals using the X-Y display. This can be applied to measurements such as the phase angle of two sine waves.
You can select four combinations on the X and Y axes, and therefore display multiple X-Y waveforms simultaneously and find relationships between them.
Simultaneous observation of X-Y waveforms and normal T-Y waveforms (waveform display using voltage and time axes) is also possible.
Example: Computing dynamic BH characteristics of a magnetic substance On the DL850 you can measure voltage and current, then analyze hysteresis of magnetic flux density B and magnetic field strength H. Energy loss generated by magnetostriction can be evaluated by measuring dynamic BH characteristics.
Magnetic flux density: B = Integ (C1) / (K1*K2)
Magnetic field strength: H = C2*K1 / K3
C1: voltage, C2: current
K1: number of turns, K2: cross sectional area
K3: magnetic circuit length
Special Functions
Snapshots
With the push of "SNAP SHOT" key, you can save a "snapshot" of the measured waveform (the waveform displayed on screen). The waveform remains saved even if you restart measurement, therefore you can easily compare the snapshot with any newly measured waveforms. Snapshots can also be saved and loaded as files. You can compare waveforms from varied conditions |
Example: Comparison of a snapshot waveform (white) with another waveform |
Web Server
 You can operate controls and acquire screen images with a Web browser - no special software required on the PC. |
The Web Server function displays the screen of any networked DL850/DL850V on a PC via Ethernet. From this screen, you can remotely start or stop measurement, update the DL's display, and take snapshots (capture images) of the screens. |
Multilanguage Support
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Adhesive front panel key label sheets ("panel sheets") are available in eight different languages. Multilanguage support is also provided for menus and error messages. |
Saving Screen Images and Displaying Thumbnails
 Screen images saved to storage media are shown on screen as thumbnails for easy identification. |
Screen images can be saved to a specifi ed storage medium in PNG, JPEG, or BMP format. These screen images can be imported into reports or other PC-created documents. |
DL850V Vehicle Edition
Enhanced capabilities for vehicle design and development such as CAN & LIN Buses monitoring
The DL850V ScopeCorder Vehicle Edition can display CAN- and/or LIN-protocol communication data as trend waveforms on the display by using the CAN Bus Monitor Module (720240) or CAN & LIN Bus Monitor Module (720241(*1) ). It can also trigger on decoded waveforms. By identifying the correlation between communication data on the vehicle-installed LAN and analog data such as voltage, temperature, and sensor signals or the ECU’s control logic signal, a vehicle’s overall LAN system can be evaluated. Furthermore, with the /DC option, the DL850V can be driven by DC power such as the vehicle’s battery, in addition to ordinary AC power.
(*1): The CAN & LIN Bus Monitor Module (model: 720241) is supported by the main unit firmware ver. 2.00 or later.
Utilization of Vehicle-installed Network Definition Files (CAN DBC, LIN LDF)
Data to be acquired using a bus monitor module (720240 or 720241) can be specified not only in digital code (hexadecimal or numeric), but also loaded from a network definition file (CAN DBC or LIN LDF).
| Example of comparison and verification of a measured signal and CAN bus signal You can trend the physical value of CAN bus data and the corresponding measured waveforms on the same screen at once. For example, an ignition switch ON/OFF signal, a CAN signal corresponding to that command, and an actual signal measured by a pressure sensor, etc. can be displayed and checked on the same screen, to verify the correlation of those signals. |
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Support for both AC and DC power (/DC option, DL850V only)
- Low power consumption of 60 - 120 VA (typ.)
- Low noise
The DL850V Vehicle Edition can be driven by a 12 V DC battery, vehicle’s cigarette lighter, or ordinary AC power. (We provide accessories for DC driving; see the list of accessories at the end of the catalog.)
Connection Interfaces
- EXT I/O - GO/NO-GO determinations can be output, and you can perform control based on start/stop and other external signals
- External clock I/O (EXT CLK IN) - Perform sampling timed to an external signal (up to 9.5 MHz).
- External Trigger Input (EXT TRIG IN)
- External Trigger Output (EXT TRIG OUT)
- Video signal output (VIDEO OUT) - Confirm waveforms on an analog RGB (XGA) external display.
- USB-PC Connection Terminal - Enables control from a PC.
- Ethernet 1000BASE-T - Comes standard
- GP-IB (optional)
- IRIG (optional*2) - Inputting an external time signal lets you synchronize multiple DL850s.
- External hard drive IF (optional*1) - Connect an eSATA standard hard drive.
- SD Card Slot - SD, SDHC compliant, comes standard
- USB Peripheral Connection Terminals - Supports USB storage, keyboards, and mouse input.
*1 Built in hard disk and external hard disk IF are not available together.
*2 The GP_IB is also available when IRIG (/C20) option is specified.
Specifications
Software
| Name | Description | |
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| DL850/DL850V WDF File Access Library | This software (DL850.dll) offers API (Application Program Interface) for acquiring data from waveform data files (*.WDF) saved on DL850 series. | y-Link |
| LabVIEW Drivers for DL850/DL850V | LabVIEW drivers for DL850/DL850V | y-Link |
| MATLAB Control Tool Kit | This MATLAB tool kit enables DL (M) Series to easily interface with MATLAB. The software can be used to control supported DL series instruments from MATLAB or to transfer data from DL series instruments to MATLAB via GP-IB, USB or Ethernet. | Learn More |
| MATLAB Control Tool Kit - 701991 (trial version) | This MATLAB tool kit enables DL (M) Series to easily interface with MATLAB. The software can be used to transfer data from DL series instruments to MATLAB via GP-IB, USB or Ethernet. |
y-Link |
| MATLAB Control Tool Kit - 701991 (upgrade version) | This MATLAB tool kit enables DL (M) Series to easily interface with MATLAB. The software can be used to transfer data from DL series instruments to MATLAB via GP-IB, USB or Ethernet. | y-Link |
| TMCTL | TMCTL is a DLL to support development of custom software. By using this DLL, users can write original programs to control instruments from a PC. | y-Link |
| USB Driver | The USB Driver is needed when required by the software. | y-Link |
| XViewer 701992 | Xviewer allows you to display acquired waveform data (using the “Viewer” function), perform file transfers, and control DL (M) Series from a PC via GP-IB, USB or Ethernet. | Learn More |
Modules / Accessories
700924 100 MHz Differential Probe
Differential probe capable of wide-band, high-voltage floating measurements
700929 10:1 Probe
Passive Probe, 1000Vp CAT II, 100MHz, 10:1, 10MΩ, 1.5m, Isolated Probe, Iso-Probe
Please see also 701947 & accessories.
700986 Logic probe
8-bit, non-isolated, response speed: 1µs
Two measurement leads (B9879PX and B9879KX) included.
700987 Logic Probe for the DL750 - isolated inputs
Use with measurement lead 758917 and 758922, 758929 or 701954 adapter leads
701250 Analog Voltage Input Module
High-Speed 10 MS/s 12-Bit Isolation Module (2 ch)
701251 Analog Voltage Input Module
High-Speed 1 Ms/s 16-Bit Isolation Module (2 ch)
701255 Analog Voltage Input Module
High-Speed 10 MS/s 12-Bit non-isolation Module (2 ch)
701260 Analog Voltage Input Module
High-voltage 100 kS/s 16-Bit Isolation Module (with RMS, 2 ch)
701261 Universal Voltage & Temperature Input Module
Universal Module ( 2ch)
701262 Universal Voltage & Temperature Input Module (w/AAF)
Universal Module (with Anti-Aliasing Filter, 2 ch)
701265 High-Precision Temperature Input Module
Temperature/high-precision voltage Module (2 ch)
701270 - Strain Input Module (NDIS)
Strain Module (NDIS, 2 ch)
701271 - Strain Input Module (DSUB)
Strain module (DSUB, Shunt-CAL, 2 ch)
701275 Acceleration & Voltage Input Module (w/AAF)
Acceleraton / Voltage Module (with Anti-Aliasing Filter, 2 ch)
701280 - Frequency Input Module
Frequency Module (2 ch)
701926 High Voltage Differential Probe
701926 High Voltage Differential Probe for the DL series
701930 Current Probe
Bandwidth: DC to 10 MHz (-3dB)
701931 Current Probe
Bandwidth: DC to 2 MHz (-3dB)
701933 Current Probes
Bandwidth: DC to 50 MHz (-3dB)
701934 Probe Power Supply
A power supply for current probes, FET probes, and differential probes. Supplies power for up to four probes, including large current probes.
701940 10 MHz Passive Probe
Passive Probe, 600Vp, 6MHz/10MHz, 1:1, 10:1, 1MΩ/10MΩ, 1.5m '600V Non-Isolated'
701947 100:1 Isolated Probe
Passive Probe, 3540Vp-CAT I, 1000Vp-CAT II, 200MHz, 100:1, 100MΩ, 1.5m, 'Isolated Probe' 'Iso-Probe'
701953 16-CH Scanner Box
External scanner box for 720221 module
701955·701956 NDIS bridge heads
NDIS cable (5 m) included
| Bridge resistance: | 120Ω (701955) |
| 350Ω (701956) |
701957·701958 D-sub bridge heads
D-sub cable (5 m) included. Supports Shunt-Cal.
701963 Soft carrying case for DL850, DL850V and DL750
Three pockets are provided for storing accessories and the user’s manual.
702911-702912 Logic Probe
Logic Probes
720210 Analog Voltage Input Module
High-Speed 100 MS/s 12-Bit Isolation Module (2 ch)
720220 16 Channel Voltage Input Module
16-CH Voltage Input Module
720221 16-CH Temperature/Voltage Input Module
16-CH Voltage or Temperature Input Module
720230 Logic Input Module
Logic Input Module
720240 CAN Bus Monitoring Module
The module interprets the CAN protocol, monitors communication data on the bus, and displays the time series trend waveforms
720241 CAN&LIN Bus Monitor Module
The module interprets CAN and LIN protocols, monitors communication data on these buses, and displays the time series trend waveforms
Reviews
Detroit Energy, Mark
My company has used Yokogawa ScopeCorder for about 15 years starting with the 708 model. My department has pretty much standardized on Yokogawa which allows multiple groups to use and borrow them as needed.
TT Engineered Solutions, Tim Taubert
The Yokogawa group have always taken good care of my equipment and instrumentation needs. I have been using the DL750 on some projects and all involved have asked how I am getting such amazing data and good measurements. I always use that opportunity to say it is not me, it is the equipment I use.
Yamaha Motor Co., Ltd.
We develop engines for racing motorcycles. Mainly, I'm in charge of developing measuring systems for engine performance evaluations and reliability tests.We do a variety of different evaluations on the engine test bench. We perform measurements on a regular basis of quite a number of items including the number of engine revolutions, torque, throttle opening, air-to-fuel ratio (A/F) which indicates the condition of the engine, concentrations of exhaust gases, pressure, and temperatures related to the exhaust and engine. We capture all of these signals and perform analysis using the DL750 ScopeCorder and the modular WE7000 PC-Based Measurement Instrument. Our job requires capturing suddenly-occurring abnormal phenomena as the engine turns and then observing the details while at the same time making long-duration observations of slow signals such as the air-to-fuel ratio (A/F). We use the DL750 ScopeCorder for such monitoring applications and measurement of valve behavior during unit testing.The DL750 has a color display which makes it easy to view 16 channels of data at once, and the long memory and zoom functions allow us to observe abnormal phenomena in detail.We also use the snapshot function frequently. It helps us tremendously by letting us freeze a waveform being displayed on screen and save it to MO disk or PC card. The DL750 also has an abundant array of interfaces so it's easy to use, and one reason we chose the DL750 is because of the Ethernet function that allows us to connect it to a network. We've been using DL series digital oscilloscopes for awhile, and we are very satisfied with them because they are easy to use and offer high cost-performance.
Mr. Atsushi Masuda from Hino Motors
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Hino Motors, Ltd.
Powertrain R&D Dept.HV Lab Mr. Atsushi Masuda |
I work on development for hybrid vehicles. Especially in recent years, I've been involved with the Advanced Clean Energy Vehicle Project (ACE project) at NEDO (New Energy and Industrial Technology Development Organization).
The objective of the ACE (Advanced Clean Energy Vehicle) project for 2003 is to work in cooperation with all the automobile manufacturers in order to reduce carbon dioxide emissions by developing new vehicles that combine hybrid structure, greatly decreased fuel consumption, clean energy, and after treatment technology for exhaust gases.
At Hino Motors, our goal this year is to come out with a hybrid bus with two times the fuel efficiency compared with our previous heavy duty diesel busses. We brought in five of the DL750 ScopeCorders for development on this new hybrid bus.
The bus under development has a new hybrid system and electrical storage units, and we use the DL750s to capture various signals in that system. For the storage unit we capture cell voltage, module voltage, current, temperature and other signals. In the engine we look at RPM, torque, and controller output signals, and in the hybrid system we measure motor, controller, temperature and many other kinds of signals, all of which undergo subsequent analysis.
Before, when the project was focused on storage research, we used 10 of the DL716 ScopeCorders to measure voltage. The DL716 accepted 16 channels of isolated input, and the long memory of that oscilloscope gave us high resolution that was really convenient for us. We chose the DL750 this time because it carries over the features of the DL716, but has improved long memory, is smaller in size, and adds GP-IB and Ethernet support which we think will be useful in the future.
By hooking up the five DL750s to a notebook PC via GP-IB, we can gather all 80 channels worth of data together using our customized LabVIEW software. We can send measurement commands to the DL750 from the PC, and that really speeds up our work. By gathering various kinds of data measured from the actual vehicle, the DL750 helps us understand what's going on inside the hybrid systems as they operate. During development of the new hybrid bus we analyze everything from the measured RPMs at a given accelerator position to the voltage values in the storage unit to energy consumption, and this lets us determine the most fuel-efficient control conditions for the hybrid system.
Sony Electronics, Francisco Oliveros
The DL750 is fabulous. We have been using the unit to monitor AC line, investigate Instantaneous Stop conditions and to test live boards. It is safe and easy to operate (if you read the manual or receive technical service assistance). I truly recommend the unit to anyone that is involved in some kind of signal monitoring activity...it is great! I have only used 40% of its capacity more or less, but I am looking forward to squeeze every dollar we invested on it. I rate the unit at # 4 level because I am not familiar with other oscilloscopes similar to the DL750. Thanks.
Ford Motor Company, Essex, UK - Alasdair Gillespie
In the development of new engine control strategies we often have the need to capture and analyse many complex signals. To this end we have several Yokogawa Oscilloscopes including the DL750. The DL750 is an essential tool in our work, being used by engineers for a multitude of tasks: Software design and validation as well as Control system design and calibration.
In a recent case, we had a development issue with the control system for an engine actuator. On analysis of the signals within the software calibration tool we were unable to diagnose the issue. It wasn't until we used the DL750 with its high speed signal acquisition and multiple channel capability that we could fully understand what was going on.
In engineering, it is the understanding of a system's behavior that is the key to developing solutions. The DL750 gives us a window into the complexity of the signals in our systems. From there we have the means to develop highly refined control systems for our range of class leading diesel engines.
Alasdair Gillespie
HIL systems Engineer, Global Powertrain Controls Systems Engineering
Ford Motor Company
Ronald Tegeler
This is a powerful troubleshooting tool. It took me a couple of days to figure it out, but it really is versatile and capable of monitoring signals from instrument level all the way up to 480VAC. We have already used it to monitor & trend motor currents & frequency on our new production line. We were having troubles with the motor drive tripping, and we found out that the design speed/frequency for the application was estimated wrong from the beginning. We adjusted base frequencies for the product and it is running good now.
American Electric Power, John Mandeville
We have 2 DL750s. They are easy to setup and use. The channel to channel isolation / cross is one the best unit I have found. There are 2 things that could have been done better. First there is no tilt stand on the bottom. Also, the developers view this as an enhanced scope. So the vertical and horizotal units are always in per division. This is a little bit confusing since I really would like to set the range and not the volt/div * 8 div. Otherwise this is a very nice instrument.
