RECORDERS
WAVEFORM
MEASURING
INSTRUMENTS
DIGITAL
MEASURING
INSTRUMENTS
DIGITAL OSCILLOSCOPES & DIGITAL SCOPES
DL708
7018
Digital Scope
DL708
INDEX
DL708 (701810)
370 × 260 × 183mm 6.8kg
(14-5/8 × 10-1/4 × 7-1/4" 15.0 lbs)
The DL708 is designed for measuring multi-channel isolated physical signals. The DL708 has the same ease of operation and superb portability of the DL1500 series digital
oscilloscope with the addition of a large color display. The
modular inputs provide flexibility for various applications.
The new DL708 provides data acquisition and recording
technology to measure signals ranging from slow changing
temperature to high-speed MHz signals. One instrument
will provide a wide range of measurements.
• Maintenance and inspection of turbines and Inspecting
turbines and rotating machinery
• Measuring the behavior of engines
• Monitoring large plants
• Monitoring the operation of press machines
• Observing impact and vibration tests
• Observing sporadic one-shot events
• Recording changes in temperature and electric potential
• Maintaining substations
FEATURES
■ Up to 8 channels isolated inputs
By changing the plug-in modules, you can perform temperature measurement, precision voltage measurement.
(Non-isolated modules are also available.)
■ 10 MS/s max. sampling rate, 10 bits 16 M words
(with high-speed module)
■ 100 kS/s max. sampling rate, 16 bits, 16 M words
(with high-resolution module)
■ Large 10.4-inch color TFT display
A wide viewing angle color LCD enables waveforms to
be displayed clearly.
■ 1.2 GB internal hard disk (optional)
The hard disk can be used for real time recording with an
ultra-long memory of up to 128 M word at 1 channel use.
■ Built-in printer and centronics interface
The DL708 has a built-in printer for fully independent
use, and a Centronics interface to connect to an external
printer. Color printers are supported.
■ Compact and light weight
The instrument weighs just 6.8 kg (15 lbs) including the
8-ch high-speed isolation module.
■ 3.5-inch FDD, standard
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DIGIT AL OSCILLOSCOPES & DIGITAL SCOPES
701870 701860 701853 701852 701851 701850
Plug-in Modules
● Multi-language on-line
HELP
English, French, German or Japanese
may be selected. For greater convenience, the built-in HELP facility displays function information, setting
ranges, and other information corresponding to the panel keys and software key menu. Error messages are
also displayed in the selected language to improve efficiency.
RECORDERS
WAVEFORM
MEASURING
INSTRUMENTS
DIGITAL
MEASURING
INSTRUMENTS
INDEX
DIGITAL OSCILLOSCOPES & DIGITAL SCOPES
DL708
FUNCTIONS
■ WAVEFORM CAPTURING FUNCTIONS
Capture signals with a conventional oscilloscope functions. You can set the time axis, voltage axis and trigger
while observing a waveform.
● Capturing Signals with Long Memory
You can capture signals using either the standard 400 k
words of memory or the optional long memory of up to
16 M words. This long memory lets you record waveforms over a long period of time without having to reduce
the sampling speed. You can home in on the details of
the captured signals by using the zoom function or the
long copy function.
You can easily save the captured signals to a large capacity medium such as the internal 1.2 GB HDD (optional),
or an external 230 MB MO drive via a SCSI interface (optional).
● A Wealth of Trigger Functions
The DL708 supports an enhanced trigger which is defined as a combination of parallel patterns, in addition to
the normal edge trigger. You may set threshold values of
A and B for each channel, then set the trigger using a
combination of H (High), L (Low) and X (don't care).
The A and B parallel patterns may be set independently.
When setting the Edge ON A trigger, you can combine
the rising and / or falling edge of the specified signals.
● History Memory and Sequential Store
The history memory and sequential store function divides
the internal memory, enabling you to record the input signals a number of times. History memory will allow you
to recall up to 1000 previous display screens.
The sequential store function is handy for capturing series
of high-speed events generated at intervals of a few ms or
less. Sequential store eliminates the process of displaying
each captured waveform, so the signals are captured with
a very short dead time. You may assign the number of acquisitions in advance and the captured waveform is displayed after the set number of acquisition.
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● Envelope
The envelope function always records the peak values of
the input signals at the maximum sampling speed, regardless of the observation time. This is useful when observing surge signals which occur intermittently over a period
of several minutes or several hours.
When the envelope function is used, the sampling speed
differs depending on the input module
DIGIT AL OSCILLOSCOPES & DIGITAL SCOPES
Edge trigger
A ➛ B (n)
A Delay B
Edge On A
OR
B>Time (Pulse Width Trigger)
B<Time (Glitch Trigger)
B Time Out
Window
Sets a regular edge trigger.
Causes a trigger the n-th time that conditon B goes true after conditon A has gone
true.
Causes a trigger if condition B goes true after condition A has gone true and an
interval at least equal to the delay setting has elapsed (condition B is ignored during
the delay time).
Enables an edge trigger on another input during the interval when trigger condition
A is true.
Causes a trigger when any one of the individual channel conditions set with the
patterns goes true.
Causes a trigger when trigger conditon B (a pattern) has gone true and remained
true for an interval equal to or longer than the set time, and then goes false.
Causes a trigger when trigger condition B (a pattern) goes first true and then false
within an interval shorter than the set time.
Causes a trigger if trigger condition B (a pattern) goes true and remains true for the
time set.
Causes a trigger if a signal falls inside a window defined by upper and lower
thresholds, or if the signal falls outside the window.
RECORDERS
WAVEFORM
MEASURING
INSTRUMENTS
DIGITAL
MEASURING
INSTRUMENTS
INDEX
DIGITAL OSCILLOSCOPES & DIGITAL SCOPES
DL708
■ WAVEFORM ANALYSIS FUNCTION
● Measurement of 26 Kinds of Waveform Parameters
The DL708 automatically computes the maximum and
minimum values, RMS value and other voltage-related
parameters, as will as frequency, rise time and other time
axis parameters. These automatic measurements are useful for analyzing waveforms and are unaffected by human
reading errors.
● Cursors
In addition to the horizontal cursor for measuring the
voltage axis and the vertical cursor for measuring the time
axis, the DL708 has a marker which can be moved over
the captured waveform. The marker can be moved to the
zoom screen which displays an enlarged waveform segment. This allows you to measure the time difference or
potential difference between two points with high time
resolution.
● FFT Analysis Function
The standard DL708 supports a power spectrum of up to
10,000 points. With the optional user define computation function, you can also use various functions such as
linear spectrum and transfer functions.
■ WAVEFORM DATA RECORDING FUNCTIONS
● Real-time Hard Disk Recording (with Optional Internal
Hard Disk)
By using an internal 1.2 GB hard disk, you can record input signals in real-time. You can also record signals continuously over several days.
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● Inter-channel Computation
The standard instrument supports addition, subtraction,
multiplication, FFT (power spectrum) and phase shift
computations (addition, subtraction and multiplication
are performed after correcting the phase difference between channels). By installing the user defined computation function, you can freely define computation formulas
incorporating a wide range functions. Trigonometric
function, differential, integral, square root and digital filter functions, as well as the usual four arithmetic operations are available.
● Output to an External Printer or Plotter
(You can record several pages of waveform data using a
printer.)
The DL708 can be connected via the Centronics interface
to an external printer. You can record data on plain paper
instead of thermal paper, eliminating the need to make
copies of thermal paper printouts to preserve data
records. You can also print onto several pages data
which was recorded over a long period to the internal
memory or the hard disk. You can even make a copy of
the screen using an external plotter which supports HPGL, via the GP-IB or RS-232-C interface.
DIGIT AL OSCILLOSCOPES & DIGITAL SCOPES
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