DL7440/DL7480 DIGITAL OSCILLOSCOPES (DISCONTINUED)
This Digital Oscilloscope is used to measure recorded signals during DVD recording evaluation processes. It is highly reliable and used by many research and development companies in their efforts for such R&D processes as comprehensive digital media integrated chipset solutions.
What's New: With the 2.57 firmware and later versions, the new logic probes model: 701988 & 701989 are available.
This analyzer meets various measurement and analysis needs.
- Maximum 16 MW recording memory
- USB compliant
- Ethernet connectivity (optional)
- User-defined math (optional)
- 2 GS/s maximum speed
- 500 MHz analog bandwidth
- Supports 250 MHz logic probe
- PC card interface (Type II)
- Power supply analysis function (optional)
- Serial bus analysis function (optional)
DL7400 Series Models Lineup
|Analog input channels||4||4||8||8|
|Logic input channels||16-bit|
|Max. samplimg speed||2 GS/s|
|Max. record length||4 MW/ch||16 MW/ch||4 MW/ch||16 MW/ch|
Capture All the Signals You Want Easily, Accurately, and Reliably...
One instrument contains everything you need to observe multiple signals on analog/logic mixed circuits:
DL7440: 4 analog channels and 16-bit logic input
DL7480: 8 analog channels and 16-bit logic input
|Example of Logic Probe Connection||Logic Probe (701980)||Logic Probe (701981)|
|8-channel analog display||8-channel analog and 16-bit logic display||16-bit logic display|
Large Recording Memory and Quick Zoom for Accurate Waveform Capturing and Monitoring
|Even some oscilloscopes with high sampling rates may not be able to accurately capture waveforms if the memory size is not large enough for the required monitoring period. This limitation is due to the necessary drop in sampling rate, which occurs if the recording memory is not long enough. A larger recording memory not only increases the monitoring time, but also enables users to maintain a high sampling rate thus ensuring accurate waveform monitoring. In addition, the zoom function can be used to view enlarged images on one or two segments of a waveform captured in the large memory.||
Main and dual zoom display
All-Points Display and Fast Screen Updates Make Sure You Won’t Miss Abnormal Signals
|When working with data captured in the large recording memory, the amount of information appearing on the display varies greatly depending on how the data are presented. The differences occur depending on whether you choose to display all points in a captured waveform, or just major values, such as maximum and minimum values, in a given segment on the waveform. The DL7400 Series provides fast screen updating in all-points display mode, so you won’t miss abnormal phenomena or have slow responses to instrument controls.||
Main and dual zoom display
A Variety of Functions to Help You to Find Useful Information in Large Amounts of Data
When an abnormal signal is displayed on the screen, does it disappear before you can press the STOP key?
|The history memory function divides the large recording memory into a number of blocks and automatically saves up to 4096 previously captured waveforms. You can increase the number of screens that can be saved to history memory by setting a shorter record length.|
|The history search function is useful for quickly finding abnormal waveforms in the large amounts of waveform data stored in history memory. This function lets you automatically search for desired waveforms based on whether or not a signal passes through a user-defined area on the screen. You can also conduct searches based on waveform parameters.|
|Calculates statistical information based on the parameter values for waveforms stored in history memory. This function calculates and displays a parameter’s maximum value, minimum value, average value, and standard deviation. You can check the parameters for every waveform in history memory.|
Measuring Periodically Fluctuating Amplitudes
|Automatically calculates the maximum value, minimum value, average value, and standard deviation of selected waveform parameters for each period of a signal. You can even find the period corresponding to the calculated maximum and minimum values and display that period in the zoom window. In some applications, like with a PWM (pulse width modulation) control signal, you may need to determine information about each waveform period for long amounts of time. The DL7400 Series with its long memory, lets you analyze a long waveform, period-by-period, based on the period of a reference signal.
How can I quickly count a large number of pulses in waveform?
|Automatically counts the number of pulses in the waveform data between cursors. The threshold level for recognizing a single pulse is user-definable, so you can reliably compute pulses even in signals with unstable levels. With the DL7400 Series, you’ll never again have to manually count pulses on screen or on a stack of printouts.
Simple and Enhanced Triggers
|The many trigger types in the DL7400 Series enable stable monitoring of a wide range of waveforms.|
Power Analysis Functions (with the /G4 option)¹
Easy, automatic calculation of power supply parameters including: switching loss, power, power factor, impedance, energy, and more.
| From the main power analyze setup menu, you can select which channels will be used for power measurements. For each channel selected, you can choose from a number of waveform parameters specific to power analysis. (For example, I2t can be calculated for fuse measurements). Additionally from the main power analyze setup menu, you can jump to the Auto Deskew function or the Power Analysis Math and Parameter Measurement menus.
¹ The Power Analysis Functions (/G4 option) includes the User-Defined Math (/G2 option).
Automatic parameters available on voltage channels
Measure and display how parameters change for each waveform period
|Fluctuations in waveform parameter values of acquired signals are displayed on a plot. For example, on an active power factor correction circuit, you can simultaneously display fluctuations in the switching frequency and switching current of the modulating signal relative to the commercial power supply and input voltage. Also, you can measure commercial power supply voltage and current and then display the trend of power consumption over each cycle.
You can measure commercial power supply voltage and switching voltage/current in active power correction circuits, and also plot fluctuations in switching frequency and switching current.
Harmonic analysis of the power supply current allows for easy comparison to EN61000-3-2 standards²
| Limit values based on EN61000-3-2 class A, B, C, and D can be superimposed with measured data. Limit values and numeric data values are displayed together in a list. Data exceeding the limit value are flagged.
² You can use the DL7400 for pre-complaince testing.
Use Yokogawa's WT2000 Digital Power Meter for standards compliance testing.
Analysis Results Display and List Display
Easily adjust the skew between voltage and current probes
Adjust for differences in electrical length (skew) between voltage probes and current probes.This is useful for switching loss measurements and other measurements affected by voltage/current signal skew. Deskew can be performed automatically or manually for each channel.
|Deskew signal source (701935)
Output voltage: Approx. 0 to 5 V
Output current: Approx. -100 to 0 mA
Output freq.: Approx. 15 kHz
Falling time: Approx. 15 nsec
100 MHz Differential Probe (701921)
50 MHz Current Probe (701933)
User-Defined Math (with the /G2 option)
|The DL7440 and DL7480 include addition, subtraction, multiplication, binary conversion, inversion, differentiation, integration, and power spectrum as standard calculation functions. With the optional user-defined calculations, you can define equations using arithmetic calculations as well as a variety of other functions, including trigonometric functions, differentials, integrals, square roots, digital filters, six different FFT functions, and pulse width calculations. In addition, calculation results can be specified as parameters for other equations, so the DL7440 and DL7480 can directly handle complex computations that formerly required data to be uploaded to a PC for computation.|
Serial Bus Analysis Functions (with the /F5, /F7 or /F8 options)
Three serial bus analysis functions (I2C, CAN, and SPI) are available together "in one instrument."
These options provide physical-layer observation and analysis of serial bus signals. Evaluations from such analyses are essential to solve communication failures resulting from signal deterioration and unpredictable external noise.
I2C Bus Trigger and Analysis
|I2C bus signals (SCL and SDA), used extensively in home electronics such as analog and digital televisions, and video cameras, and in communications equipment such as mobile phones can be captured with specialized triggers and displayed as waveforms. Triggers can be based on start conditions, userspecified address and data patterns (Data 1 and Data 2), non-ack (when acknowledgement is not received), and other conditions for reliable capturing of I2C signals. You can also set triggers based on combinations of I2C bus trigger conditions (SCL and SDA) and signal inputs on channels 3-8 (combination triggers).
Captured waveforms can be analyzed in a time-series manner, and the analysis results at each byte is displayed in a list along with the presence/absence of ACK field codes. When an analysis result is selected with the cursor, the corresponding portion of the waveform is automatically enlarged in the zoom area.
You can quickly search the analyzed results for a specific address or data pattern from within the analysis results.
Two pairs of I2C busses can be input at the same time (SCL: CH1 & CH3; SDA: CH2 & CH4), and then analysis can be performed alternately on either bus.
|I2C Address and Data Trigger Setup Menu||I2C Bus Analysis Results Display|
CAN Bus Trigger and Analysis
|Using dedicated triggers, CAN bus signals can be captured and displayed as waveforms. (The CAN bus option supports both highspeed and low-speed CAN. CAN is used widely in the internal communication busses of automobiles, FA machinery, medical equipment, and other devices.) Analysis performed according to the CAN protocol can be displayed in a list together with the waveforms. Two types of differential probes are available for measuring CAN bus signals (sold separately).
Trigger conditions can be set from fields or combinations of fields in CAN data frames (ID, Data, RTR bits, etc.), enabling reliable capturing of CAN bus signals. Triggers can also be activated on an error frame.
Captured CAN bus waveform data can be analyzed in a timeseries, and the ID and Data at each frame displayed in hexadecimal or binary notation. Frame and error types can also be displayed simultaneously. By selecting a frame with the cursor, you can display an enlarged version of the corresponding portion of the waveform on the screen.
Search the analysis results for a specific CAN frame—ID, Data, Remote (RTR) or Error frame. The specified field is automatically identified and displayed in the on-screen zoom window.
A waveform showing the stuff bit position can also be displayed.
|Hight-speed CAN (ISO11898)|
|Dominant (0), Recessive (1)|
|500 MHz Differential Probe (701920)||200 MHz Differential Probe (701922)|
|CAN Bus Trigger Setup Menu|
|CAN Bus Analysis Results Display|
SPI Bus Trigger and Analysis*
|Signals in the SPI bus, a synchronous 8-bit serial bus widely used for inter-IC and data communication in embedded systems and in other applications, can be captured using dedicated triggers. The captured results are then analyzed based on the SPI protocol and can then be displayed together with the waveform.
Triggers are activated on user-defined conditions of the MOSI (master output slave input) and/or MISO (master input slave output) data signals on the SPI bus. Data strings of 1-8 bytes can be defined.
Two types of trigger patterns can be set (A pattern, B pattern, or both), allowing a trigger to be activated, for example, upon data read out from the slave (MISO, pattern B) in response to a specific command from the master (MOSI, pattern A).
Data analysis results and SS (slave select) bits can be displayed in a list together with the waveforms.
After analyzing the acquired data, you can perform high speed searches for a specific MOSI or MISO data pattern (1-8 bytes).
Example of a connection to a SPI bus
|SPI Bus Trigger Setup Menu||SPI Bus Analysis Results Display*||SPI Bus Data Search Setup Menu*|
|* The SPI bus analysis and search functions are standard features. The SPI bus triggers are available only as an option.|
Connecting with PC via WebDAV*
Connection with a Wide Range of Peripherals such as PC, PrinterUsing the Windows XP WebDAV* function, the DL7400's internal storage media drives (floppy, ZIP®, PC Card) can be mounted as a PC network drive.
Using your PC, you can then access stored data on these drives as easily as you would access data on the PC's own hard drive. This feature does not require any external FTP client software.
With an Ethernet connection, you can perform various functions using Internet Explorer.
|Peripheral Device Connections
You can create a PC program to remotely control your DL7400 Series through a PC, similar to remote control operations through a GP-IB interface.
Controlling the DL7400 Series using a USB mouse
Outputting and Viewing Images
|The PRINT key lets you print screenshots to the built-in printer, a USB printer, or network printer.||Simply press the IMAGE SAVE key to save a screenshot to a PC card or other storage device. Screenshots can be saved in BMP, TIFF, PS, PNG, and JPEG formats.||Captured images can be easily checked as thumbnail icons. File names are displayed together with the thumbnail images, allowing you to check files and immediately change their names or delete them if necessary.|
- Probe Power Connectors
Probe power connectors for active probes and for the 701935 Deskew signal source. The DL7400 Series comes standard with 4 connectors. 4 additional connectors can be added as an option.
- RGB Video Signal Output Connector
Outputs a video signal for viewing waveforms on an external monitor.
- USB-PC Connector
Complies with USB Rev 1.1.
- USB Peripheral Device Connectors
Complies with USB Rev 1.1.
Type A connectors: 2 ports compatible with USB Flash memory*, HD drive*, USB printers, keyboard and mouse.
*: Available only when the following description is included in the Misc → Overview menu.
"USB Storage Yes"
- SCSI (optional)
- Ethernet (optional)
Complies with 100BASE-TX and 10BASE-T.
- PC Card Interface
Flash ATA card (PC card Type II)
- External Trigger Input/External Clock Input/Trigger Gate Input
Inputs DC to 100 MHz signal for external triggering (external trigger input).
Inputs clock signal from 40 Hz to 20 MHz from exterior (external clock).
Trigger occurrence can be controlled using external signal (trigger gate input).
- Trigger Output
Outputs TTL level trigger signal.
- Logic Inputs
Logic probe connectors. Two 8-bit logic probes can be connected. (701980 and 701981 logic probes sold separately)
|701480||DL7480 with 8 CH input and maximum 16 MW memory|
|701470||DL7480 with 8 CH input and maximum4 MW memory|
|701460||DL7440 with 4 CH input and maximum 16 MW memory|
|701450||DL7440 with 4 CH input and maximum 4 MW memory|
|Area of Safe Operation Measurement for Switching Devices||Area of Safe Operation Measurement for Switching Devices||Learn More|
|707714 Computation Waveform Viewer||The Viewer function (with the computation function) of the WE7000 Control Software has been modified to run as an independent software program for offline analysis. This allows you to perform tasks efficiently such as when analyzing measured data collectively aty a later time.||y-Link|
|Communication Sample Programs||The following programs are DL series communication sample programs written in Visual Basic (VB) and Visual C++ (VC++)'s project format. Please refer to the User's Manual(IM 701990-01E) for detailed information, which can be extracted from "dlsample101.zip" file.||y-Link|
|DL-Gates||DL-Gates can be used to transfer files resides in the DL to a PC using the USB interface. The files in the internal hard disk of the DL750 or zip disk in either the DL7400 or DL1600 can be transferred to a PC.||y-Link|
|DL-Term||DL-Term is a command line tool for the DL series library. Please use this software as a development tool for writing communication programs using the DL series library.||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|
|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|
|Wirepuller (learn more)||Wirepuller enables the Digital Oscilloscopes and WT1600 Digital Power Meter to be controlled from your PC via the Ethernet, USB, or GP-IB interface.||Learn More|
|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|
|Yokogawa T&M Web Runtime||The file below installs library files required for the web service functions of DL750, DL1600/DL7400/SL1400 series instruments. Normally, these files are downloaded automatically from the Microsoft web site when you connect your DL to a PC through a web server. This library is required only if you do not have an internet connection.||y-Link|
Differential probe powered by Yokogawa Digital Oscilloscopes, ScopeCorders, external power supply or internal battery.
Active Probe, 10Vp, 900MHz, 10:1, 2.5MΩ / 1.8pF, 1.5m, FET Probe w/ LEMO power pig-tail
Differential Probe, 12Vp Differential, 30Vp Common-Mode, 500MHz, 10:1, 100kΩ, w/ built-in power cable (LEMO lead)
Bandwidth: DC to 100 MHz (-3 dB)
Differential Probe 20 Vpeak
Current probe powered by Yokogawa Digital Oscilloscopes, Scopecorders or external power supply.
Current probe powered by Yokogawa Digital Oscilloscopes, Scopecorders or external power supply.
For use with the Power Supply Analysis option (/G4).
Passive Probe, 400Vrms, 500MHz, 10:1, 10MΩ, 1.2m, 'Mini'
Typically used with DL1700 and DL7400 as an optional non-standard probe.
Logic probe for DL7440/DL7480
The B9852HF contains the following eleven(11) kinds of accessories: Insulation cap, IC cap, BNC adapter, Rigid tip, Spring tip (Ø: 0.80 mm), Spring tip (Ø: 0.38 mm), Ground spring, Adjustment tool, Pincher tip, Standard ground lead, Color coding rings. PBL5000.
LG Electronics Inc.
|LG Electronics focuses mainly on the three areas of optical storage, digital AV, and mobile internet appliances, and is working hard to improve its technology and product development capabilities. In particular, LG's level of technology in the area of optical storage has become very high during the past several years, and we are now using that technology to design and manufacture world-leading products. Recently, our company debuted the Super-Multi DVD Writer (model GSA-4040B) which is the first such device in the world that can support the DVD-RAM, -RW, and +RW formats. The Super-Multi DVD Writer allows users to freely play back, record, and edit large quantities of data on a DVD, which holds||
LG Digital Media Research Center
Data Storage Group
|Yokogawa has a very close relationship with LG, and supplied us with high quality measuring equipment which became very popular and trusted tools in both our R&D department and manufacturing lines. For our digital display and media products, we are using ten of the TA520 /TA720 Time Interval Analyzers, and eighty of the DL7440/DL7480 , DL1740, and DL1620 Digital Oscilloscopes. For digital appliances, we have brought in two hundred of the WT series power meters, and about one hundred of the Darwin series of hybrid recorders.|
Media Tek Inc. - Hsin-Chu City Taiwan
MediaTek Incorporated is a dynamic fabless IC company. Since its establishment in 1997, MediaTek has dedicated substantial resources to research and development of comprehensive digital media integrated chipset solutions. MediaTek has now become one of the world's largest fabless IC companies.
Currently, MediaTek's IC products that are on offer include chipsets for CD-ROM, DVD-ROM, CD-R/RW and DVD- R/RW drives for PCs and other consumer products such as DVD players and DVD recorders.
Testing and measuring instruments are very important tool used by engineers to develop optical storage devices. They must be highly accurate and stable, and match the special conditions of our experiments. Each R&D engineer has one set of measuring instruments, and in order to obtain identical results for all experiments, R&D groups must be very careful to choose measuring instruments of excellent quality.
|In the photographs below, we are using the DL7440 Digital Oscilloscope to measure recorded signals during DVD recording evaluation. The Yokogawa DL7440, with large capacity memory and rolling mode with faster sampling rate, is very convenient for developing optical storage devices.
Mr. Allen Chen, Deputy director system development div., Digital Consumer BU MediaTek Inc.