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.
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|
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
The DL7400 Series includes 4 and 8-channel analog input models. Each model has up to 16-bit logic inputs as standard. All these inputs come in a convenient, benchtop-sized instrument. In additon to capturing up to 16 logic signals, the DL7400 Series lets you simultaneously measure up to 8 analog signals without needing to synchronize two separate oscilloscopes. The DL7440 and DL7480 SignalExplorer oscilloscopes are designed for users who want an easy, efficient solution in one unit for handling measurements that required two or more units in the past.
|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|
|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
|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.|
|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.
|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.
|The many trigger types in the DL7400 Series enable stable monitoring of a wide range of waveforms.|
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
|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.
| 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
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)
|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.|
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 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|
|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|
|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.|
Connection with a Wide Range of Peripherals such as PC, Printer
Using 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.
* Web-based Distributed Authoring and Versioning
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
|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.|
|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|
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)
The 701922 is a 10:1 Differential Probe rated at 20Vpeak differential voltage input and 60Vpeak Common-Mode input with 200MHz bandwidth (-3dB). This probe is recommended for CAN bus and can be used with virtuallly any oscillscope with an internal 50Ω termination or use the external 50Ω 700976. This probe is powered via a built in pig-tail LEMO lead. This probe can be powered with Yokogawa scope option /P2 or /P4, or an external power supply 700938-3-D or 701934-D. The probe is supplied with one each pinchers, B9852MF black and B9852MG red and a 50cm ground extension.
Current probe powered by Yokogawa Digital Oscilloscopes, Scopecorders or external power supply.
Current probe powered by Yokogawa Digital Oscilloscopes, Scopecorders or external power supply.
Passive Probe, 400Vrms, 500MHz, 10:1, 10MΩ, 1.2m, 'Mini'
Typically used with DL1700 and DL7400 as an optional non-standard probe.
Passive Probe, 1000Vrms, 400MHz, 100:1, 50MΩ, 1.2m, 'Mini'
For DL1700, DLM2000, DLM4000, DL/DLM6000,DL9000 and SB5000.
See also 701945 for 250 MHz version of this same probe.
Passive Probe, 1000Vrms, 250MHz, 100:1, 50MΩ, 3.0m, 'Mini' with extra-long 3m lead. Compatible with DL1700, DLM2000, DLM4000, DL/DLM6000, DL9000 and SB5000. See also 701944 for 400 MHz version of this same probe.
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.
For use with the Power Supply Analysis option (/G4).
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