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The New Standard
COLOR, Advanced Functions, Readability and Portability
Digital Oscilloscope
DL1540C/DL1540CL
q 200 MS/s maximum sampling rate q 150 MHz analog bandwidth
q Maximum record length: 2 M words for DL1540CL, 120 k words for DL1540C
q 6.4-inch color TFT LCD with wide viewing angle q Small and lightweight (Approx. 5 kg)
q Footprint smaller than A4
q VGA output (option) q Built - in printer (option)
DL1540CL
2.1GB internal hard disk drive,
I2C bus analysis function New!
PRODUCTS
www.yokogawa.co.jp/tm Bulletin 7015-30E
The New Standard in Portable Digital Oscilloscopes for the
Ultimate in Advanced Features, Screen Readability, and Portability
The DL1540C/DL1540CL is a new portable digital oscilloscope that has a color TFT LCD and packs many
advanced features into a small case. In addition to impressive basic specifications, we have maintained
the multi-channel and long memory features common to all YOKOGAWA oscilloscopes. The color display
makes it easier to read oscilloscope data, and the unit is about 1 kg lighter than conventional digital
oscilloscopes. These improvements make it easier to efficiently measure increasingly complex and diverse
signals, helping to improve the efficiency of the development process.
q 6.4-inch color TFT LCD with wide viewing angle
The display clearly identifies waveforms displayed on multiple channels.
q Small and lightweight (approx. 5 kg)
The unit weighs about 1 kg less than conventional models.
q 200 MS/s maximum sampling rate, 150 MHz analog bandwidth
q Maximum record length: 2 M words for DL1540CL, 120 k words for DL1540C
q Maximum screen refresh rate: 60 Hz
q Color printing feature
The oscilloscope can be connected to an external color printer through a commercially available GP-IB/Centronics
conversion adapter for direct color printing.
q 2.1GB internal hard disk drive (option for DL1540CL only) NEW!
q Built-in printer (option)
The built-in printer can be used to print out screen shots and enlarged waveforms (long copies), and for real-
time printing.
q Pulse counting function
This function automatically counts the number of pulse waveforms in a speci-
fied interval.
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NEW! The DL1540CL, is available with a new I2C*1 bus analysis option.
This turns the DL1540CL into an I2C bus analyzer.
Example application : I2C bus of VTR
SDA
SCL
Tape speed Image quality
CPU EEPROM Tuner
control adjustment
*1 Serial interfaces between ICs are widely used in consumer
electronics. Applications include computers, personal digital
assistants (PDAs), and multimedia devices such as DVD players
and car navigation systems.
s A variety of trigger functions s Powerful data analysis functions s Repidly data search functions
Trigger types are start condition, Waveform data are analyzed in a time This functions rapidly seach for
Non-Ack, conbination of address series, and analyzed results are de- specified addresses and data in the
and data pattern coded and displayed one byte at a time. analyzed result.
3
Waveform Capturing Functions
Long Memory Fast Screen Refresh Rate
For high-fidelity signal capturing or extended waveform capturing Screen refreshing is fast even with a large number of observed waveforms or during simultaneous
The DL1540C/DL1540CL can capture targeted waveforms in long memory. The maxi- waveform processing
Actual signal
mum capacity is 120 k words for the DL1540C and 2 M words for the DL1540CL. Oscilloscopes with fast screen refresh rates normally experience a slowdown
All measurements taken by the DL1540C/DL1540CL are divided into fixed intervals. in the refresh rate when the number of observed waveforms is increased or
Only the maximum and minimum values in each interval are displayed on the screen
during processes such as automated measurement of waveform parameters.
(peak-to-peak (P-P) compression). Compression makes it possible to display more
waveform data on a single screen. The DL1540C/DL1540CL was designed first and foremost to minimize the
At a given sampling rate, a longer measurement memory makes it possible to capture waveform acquisition interval in order to ensure that the desired waveforms
Digital oscilloscope with fast update speed
signals at a finer time resolution so as to display higher fidelity waveforms. During are reliably captured. The maximum screen refresh rate is 60 Hz, even when
repeat measurements, a portion of memory can be used for signal capturing. The all channels are used. Signal processing may even be added without lowering
maximum amount is 10 k words with the DL1540C and 100 k words with the DL1540CL. the screen refresh rate during waveform observation.
This feature is useful for purposes such as capturing the signals on a single track in a
single step during the process of developing and evaluating optical recording media. Digital oscilloscope with slow update speed
Color Accumulate
Effective during jitter measurement
and evaluation
The DL1540C/DL1540CL has a 6.4-inch
Two Functions to Make Long Memory More Effective
color TFT LCD with a wide viewing angle
to facilitate waveform identification. The
Zoom Function History Memory Function color accumulate feature makes it pos-
Simultaneously displays entire waveform and Stores captured waveform screens and redisplays sible to identify the rate of incidence of a
waveform enlargement the desired waveform given measurement based on the color
assigned to it. As a result, it is easy to
The DL1540C/DL1540CL compresses all measurements cap- When waveforms are displayed on an oscilloscope while
tured in long memory and then displays the measurements troubleshooting an electric circuit, an abnormal waveform that distinguish between normal and rare
on the screen. The zoom feature is not used to enlarge data appears momentarily will unfortunately disappear quickly from abnormal signals and to perform jitter
on the Main screen (P-P compressed data). Instead, it al- the screen and be replaced by the next waveform. The his- evaluations.
lows you to select and zoom in on a particular portion of the tory memory function is designed to overcome this problem. The color accumulate feature makes it
entire amount of data stored in acquisition memory. It stores a maximum of 100 past waveform screens (extend- possible to display rates of incidence of
An entire waveform and an enlarged area are simultaneously ing back from the currently observed waveform), making it various measurements in addition to
displayed on the Main Zoom screen, so the enlarged area in possible to redisplay an abnormal waveform that is no longer voltage levels and time-axis data.
the Main Zoom box is easy to identify. The optional built-in on the screen. It is also possible to stack all of the screens
printer can be used to print just the enlarged portion of the stored history memory on the LCD. The history memory func-
waveform. tion splits up long memory so that it can be used more effec-
tively.
The sequential store function is also useful. This function
displays waveforms meeting certain preset conditions after
they are measured a specified number of times. By elimi-
nating the need to display a waveform after every single mea-
surement, the sequential store function reduces the dead
time involved in signal capturing.
Envelope and Roll Modes
Select the optimum display mode based on the measured signal speed
History Memory Time Stamp Display The envelope mode always captures signals at a fast 100 MS/s sampling rate,
regardless of the time-axis setting. This function is effective for purposes such
as observing high-frequency noise on a measured signal, and observing surge
signals that occur intermittently.
The roll mode is used to display low-speed signals on the screen as if they
were being recorded on recorder chart paper. In roll mode, a waveform flows
from right to left on the screen. The oscilloscope always keeps two screens of
data in memory, so a waveform can be redisplayed after it disappears from the
left side of the screen. Roll Mode Display
4 5
Waveform Analysis Functions
Automated Measurement of Display Parameters Linear Scaling Function
Select from over 20 different parameters Allows the user to convert voltage units into physical values
Waveform parameters such as maximum voltage, frequency, duty ratio, and This feature converts measured voltages to physical values, allowing sensor
RMS can be measured automatically. Parameter measurements are auto- signal outputs to be read directly. When a set scaling coefficient A and an
matically calculated inside the oscilloscope to prevent human reading errors offset B are entered, the scaled value is calculated based on the following
from affecting measurements. The ALL Scan EXEC function, which measures equation:
all points in the acquisition data captured in long memory, can be used for
Y (scaled value) = A