DIGITAL OSCILLOSCOPES & DIGITAL SCOPES
7008
VIEW RECORDERS
Multi-channel Long Memory Digital Oscilloscope
DL2700
FEATURES
● Max 8 analog inputs or 4 analog inputs
+32 bit digital inputs (optional)
You can simultaneously observe signals from a maximum of 8
channels. Each channel is provided with a 200 MS/s A/D converter.
● Max 16M words
By limiting the number of channels used to half the number of
channels incorporated in the instrument, you can increase the
maximum record length of 8 M words per channel up to 16 M
DL2700 (700882)
426 × 221 × 425mm 17kg
(16-3/4 × 8-3/4 × 16-3/4" 37.5 lbs)
The DL2700 digital oscilloscope, with a maximum record
length of 16 MW, features more than just a long record length. We
designed this instrument to facilitate long record measurement
work. This digital oscilloscope can efficiently capture abnormal
phenomena buried in long data, allowing you to search for and
analyze the causes of these abnormal phenomena. We made the
record length per channel as long as possible to enable you to carry
out efficient troubleshooting. We also designed the instrument to
measure data in at least six channels, enabling you to determine the
cause and effect relationship between each signal. The instrument
also has excellent zoom operability to permit analysis of captured
waveforms.
Select the number of channels and record length suitable for
your application. After the purchase, if you need more channels or
a larger record length, your oscilloscope can be upgraded.
■ DL2700 SELECTION GUIDE
Model
700821
700841
700861
700881
700822
700842
700862
700882
700823
700843
700863
700883
Number of
input channels
2
4
6
8
2
4
6
8
2
4
6
8
★
Safety Standards; EN61010
EMI Standard; EN55011 Group 1 Class A
Immunity Standard; EN50082-2: 1995
Sampling rate Record length
Max
500 MS/s
500 MS/s
500 MS/s
500 MS/s
500 MS/s
500 MS/s
500 MS/s
500 MS/s
500 MS/s
500 MS/s
500 MS/s
500 MS/s
Per channel
200 MS/s
200 MS/s
200 MS/s
200 MS/s
200 MS/s
200 MS/s
200 MS/s
200 MS/s
200 MS/s
200 MS/s
200 MS/s
200 MS/s
1 M words
1 M words
1 M words
1 M words
4 M words
4 M words
4 M words
4 M words
16 M words
16 M words
16 M words
16 M words
words.
● Dual zoom display
The instrument supports a dual zoom display function which simultaneously displays the entire captured waveform together
with two selected parts of the same waveform.
● History memory
The history memory, which holds up to 8000 screens, can assist
you in troubleshooting by letting you recall previous displays.
● Logic inputs (optional)
1 logic probe offers 8 bit logic inputs in exchange for 1 analog
input. The feature provides mixed analog and digital signal observation. In its maximum configuration, the DL2700 offers 4ch
analog and 32 bit digital signal observation.
● Built-in 3.5 inch FDD
● Built-in MO drive (optional)
● Built-in printer (optional)
FUNCTIONS
■ EFFECTIVE UTILIZATION OF THE LONG MEMORY
A long memory is useful not only for capturing single shot signals. The long memory of the DL2700 can meet a variety of
measurement needs.
● High Time Resolution Measurement Using the Long Memory
When you need to capture fast noise and surge signals using a
slow time/div range, a long record length is necessary. For instance, at 10 µs/div several tens of Kwords may be required. The
4 MW record length of the DL2700 supports a sampling rate of
Number of channels that can
be used at the max sampling
rate or max record length
Max
Per channel
500 k words
500 k words
500 k words
500 k words
2 M words
2 M words
2 M words
2 M words
8 M words
8 M words
8 M words
8 M words
Frequency
band
150 MHz
150 MHz
150 MHz
150 MHz
150 MHz
150 MHz
150 MHz
150 MHz
150 MHz
150 MHz
150 MHz
150 MHz
1
2
3
4
1
2
3
4
1
2
3
4
DIGITAL OSCILLOSCOPES & DIGITAL SCOPES
DL2700
500 MS/s even when you are monitoring waveforms of several
milliseconds.
When you are observing transient phenomena or electronically
controlled machine signals, the signals captured by the long
memory are displayed on the screen in the correct orientation.
● Capturing Signals Using a Divided Long Memory
History Memory Holds up to 8000 Past Images
Troubleshooting of a designed circuit starts from capturing of an
abnormal signal. Often, when you wish to capture an abnormal
phenomenon, you do not know the correct trigger conditions
for capturing the signal. You may be lucky enough to display the
abnormal phenomenon on the screen by monitoring the signal
for some time using simple trigger conditions. However, when
you use a normal digital oscilloscope, an abnormal signal that
appears momentarily is updated by the next signal.
The DL2700 history memory holds up to 8000 previous displays
without any need for special settings. An abnormal phenomenon that appeared for only an instant can be recalled later.
Example of a superimposed display of captured past screens
● Sequential Store Function with A Dead Time of 10 µs
Normally, when a waveform is displayed on a digital oscilloscope in realtime, a dead time of several ms occurs. Consequently, you cannot use a normal digital oscilloscope for applications requiring acquisition of all the signals generated at intervals of 1ms or less. The sequential store function of the DL2700
eliminates the process of displaying the acquired signals, thus
enabling the signals to be captured with only a short dead time.
Like the history memory function, the sequential store function
enables signals that satisfy the trigger conditions for up to 8000
measurements to be acquired by the built-in memory.
● Difference between The History Memory Function and The
Sequential Store Function
Both the history memory function and the sequential store function use the memory divided into several blocks rather than as a
single unit. The history memory function uses the divided memory
blocks as a ring memory, and the contents of the oldest memory
block are updated until the stop key is pressed. The sequential
store function does not update the contents of the memory after
acquiring the specified number of waveforms. As indicated in the
figure below, when the sequential store function is used, signals
are not displayed each time they are acquired into memory.
• History memory function:
Effective for capturing abnormal signals whose nature
is not known.
Wave form display with history memory function
Time
→
Memory (n)
Memory (n+1)
• Sequential store function:
Effective for capturing signals generated at a rate of no more
than several ms, without omission.
Wave form display with sequential store-function
Memory block of number of designations
Time
→
■ SIMPLE, VERSATILE ZOOM
A zoom function that magnifies part of the captured signal is an
important feature of a digital oscilloscope that has a long
memory. The DL2700 enables you to make various kinds of
zoom displays by means of simple operations.
● Zoom that Can Simultaneously Display 24 Traces with Intuitive
Operations
The zoom operation of the
DL2700 is the same as the popular zoom operation used in the
DL1540/D1540L and DL4000
series. The ASIC developed by
YOKOGAWA processes the long
memory at high speed, enabling
you to display the desired area
instantaneously.
● Various Zoom Displays
The overall screen of a signal captured by the DL2700 is defined
as Main, and an enlarged screen of part of the waveform is defined as Zoom. You can set two enlarged areas Zoom 1 (Z1) and
Zoom 2 (Z2) with respect to a captured waveform. You can combine the Main screen, the Z1 screen and the Z2 screen into a
single screen. In the Main&Z1&Z2 setting mode which simultaneously displays the Main screen and the two enlarged screens,
Z1 and Z2, a maximum of 24 analog signals can be displayed
simultaneously.
Main display Main & Z1 & Z2 display
● By Using The Zoom Allocation Function, You Can Display An
Enlarged Form of One or More of A Number of Waveforms on
A Screen.
When performing multi-channel measurements, if it is not necessary to enlarge all of the waveforms. You can use the zoom allocation function to display only certain selected waveforms in
the Zoom screen in enlarged form.
When the zoom allocation function is not used When the zoom allocation function is used
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