Atec DL716 User Manual

DL716 DIGITAL SCOPE

NIIMI Yoshihisa*1 TAKESHITA Yukihito*1 YAMAMOTO Chiaki*

The newly developed digital scope DL716 features 16 channels and a
maximum sampling rate of 10 MS/s. The DL716, which succeeds the DL708 (8
channels), further strengthens the DL700 Series. The electronic recording function
has been enhanced to allow for the recording of 256 M Word to hard disk drive and
fast replay of data. The Replay function allows swift detection of errors in
recordings over a long time span and improvements in hardware and software have
increased PC compatibility. We standardized all communications ports (SCSI/RS­232/GP-IB) and created PC software with DL main unit features like the Replay
History function. This product supports waveform data from PCs in various formats
including BMP, and CSV for spreadsheets. The amount of supported analog
modules has been increased to seven and the addition of operation menus for all
channels has increased flexibility.

INTRODUCTION

here has been increasing demand, not only in the
mechatronics field but also in the multimedia field, for a

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measuring instrument that can observe fast and slow waveforms
as well as waveforms that require various signal conditioning
(thermocouples or strains). Users from these fields who tend to
use oscilloscopes, want in digital scopes the same operability as
oscilloscopes. In response to these demands, in 1997 we
introduced the DL708, an 8-channel digital scope, and have since
developed the DL716, a 16-channel version, to enrich the lineup.
Both of them were developed under the same basic concept of
enhancing electronic recording. With the DL716, we redesigned
the configuration, ASICs, and software, which allowed us to
intensify the advanced acquisition functions through the addition
of ultra-large memory and strengthening of PC compatibility. As
for the display, the DL716 inherits the 10.4-inch color TFT LCD
from previous models. Figure 1 shows an external view of the
DL716.

Data Acqusition

(1) Recording to Large Memory and Hard Disk Drive

The most distinguished feature is its ultra-large memory,
which has a maximum capacity of 64 M words (for
simultaneous recording on 4 channels). A maximum of 256
M words (for 1 channel recording) can be collected and
recorded to the hard disk drive. Users can observe waveforms
recorded to memory for 6.4 seconds at a rate of 10 MS/s, and
to the hard disk drive for a maximum of 42.6 minutes at a rate
of 100 kS/s. The use of memory with the DL716 enables

1

FEATURES

The DL716 offers the following advantages:

*1 Test & Measurement Business Div.

DL716 Digital Scope 9

Figure 1 DL716 Digital Scope

measurement four times longer than that of the DL708 and its
acquisition capabilities are unparalleled for this type of
waveform measuring instrument.

(2) Replay

Since all of the acquired 256-M word data cannot be displayed
on a single screen due to the display resolution, the DL716
incorporates the replay mode. This function displays a
maximum of 1-M word (min. 1-k word) of waveform data on
the screen, and the scrolling mode allows the user to smoothly
replay the data after acquisition has ended as shown in Figure 2.
The replay function allows users to detect problems quickly and
the scrolling speed can be finely adjusted.

(3) All Channel View Menuue

The DL716 is equipped with the All Channel View Menu
shown in Figure 3. Users can set channels while confirming
the settings of all channels on the screen. On the other hand,
the DL716 continues to offer the operability of oscilloscopes,
as users can set each channel while viewing waveforms. The
DL716 allows users to select the mode of display they prefer.
Also, this product has a Copy to Same Module function,
which enables the copying of settings from one channel to
other plug-in modules of the same type and thus eliminates
the complexity of multi-channel setting.

(4) Time Trigger

The time trigger is activated automatically at a specified
measurement start time and at specified intervals (in hours
and minutes) thereafter. This is useful when continuously
operated equipment needs to be monitored at a specified time.
In combination with the History Memory function, it allows
for the storing of up to 1000 waveform screens at specified
intervals.

Figure 3 Simultaneous Channel Display

Plug-in Modules

(1) High-speed and High-resolution Modules (10 MS/s

sampling, 12-bit resolution, and 850 V input)
To meet the increased demand for speed and resolution, we
upgraded the resolution of high-speed modules (10 MS/s)
from 10 to 12 bits. The DL700 series supports seven plug-in
modules, including the high-speed isolation module, high­resolution module, temperature module, logic input module,
and strain module.

256 M words

Replay screen

Replay

Scroll direction
setting

Fine adjustment of
scroll speed

1 M words

Scroll
Direction

<<

>>

>

Scroll Speed

<

Lo Hi

][

Figure 2 Replay Function

10 Yokogawa Technical Report English Edition, No. 30 (2000)