YOKOGAWA DL716 User manual

Digital Scope
IM 701830-01E
1st Edition
I-1102

1
IM 701830-01E
Foreword
Thank you for purchasing the YOKOGAWA DL716 Digital Scope. This User’s Manual
contains useful information about the instrument’s functions and operating procedures as well
as precautions that should be observed during use. To ensure proper use of the instrument,
please read this manual thoroughly before operating it. Keep the manual in a safe place for
quick reference whenever a question arises.
Three manuals are provided with the instrument, including this User’s Manual.
Manual Name Manual No. Description
DL716 User’s Manual IM 701830-01E Describes all functions (except for the communications
function) and their operation procedures for the
instrument.
DL716 Communication IM 701830-11E Describes the communications function for the GP-IB/
Interface User’s Manual RS-232 interface.
DL716 Operation Guide IM 701830-02E Describes basic operations only.
Notes
•The contents of this manual are subject to change without prior notice as a result of
improvements in the instrument’s performance and functions. Display contents illustrated in
this manual may differ slightly from what actually appears on your screen.
•Every effort has been made in the preparation of this manual to ensure the accuracy of its
contents. However, should you have any questions or find any errors, please contact your
nearest YOKOGAWA representative listed on the back cover of this manual.
•Copying or reproduction of all or any part of the contents of this manual without
YOKOGAWA’s permission is strictly prohibited.
Trademarks
•MS-DOS is a registered trademark of Microsoft Corporation.
•HP-GL is a registered trademark of Hewlett-Packard Company.
•PostScript is a registered trademark of Adobe Systems Incorporated.
•ThinkJet is a registered trademark of Hewlett-Packard Company.
•All other company and product names used in this manual are trademarks or registered
trademarks of their respective companies.
Revisions
1st Edition: January 1999
Disk No. DL24
1st Edition : January 1999(YK)
All Rights Reserved, Copyright ©1999 Yokogawa Electric Corporation
Foreword

2IM 701830-01E
Checking the Contents of the Package
Unpack the box and check the contents before operating the instrument. If the wrong
instrument or accessories have been delivered, if some accessories are missing or if they appear
abnormal, contact the dealer from which you purchased them.
DL716 Main Body
Check that the model name and suffix code given on the name plate of the rear panel match
those on your order. Whenever you contact the dealer from which you purchased the
instrument, tell him your unit’s serial No.
MODEL
MODEL
SUFFIX
NO.
Made in Japan
Model Suffix Code Specifications
701830 The input module is not included with the instrument.
Refer to page 3 for information on the input module.
Power cord -D UL/CSA standard power cord (A1006WD)
Maximum rated voltage: 125 V,
maximum rated current: 7 A
-F VDE standard power cord (A1009WD)
Maximum rated voltage: 250 V,
maximum rated current: 10 A
-Q BS standard power cord (A1054WD)
Maximum rated voltage: 250 V,
maximum rated current: 10 A
-R SAA standard power cord (A1024WD)
Maximum rated voltage: 240 V,
maximum rated current: 10 A
Help language -HJ English and Japanese
-HG English and German
-HF English and French
-HL English and Italian
Options /M1 Memory extension to 2MW/CH*1
/M2 Memory extension to 8MW/CH*1
/M3 Memory extension to 16MW/CH*1
/C8 Internal hard disk
/G2 User define math function
/N1 32-bits extended logic input
*1 Choose one from /M1, /M2, and /M3.
Example : Memory extension to 2 MW/CH + internal hard disk + user defined math function + 32-bit
extended logic input →701830-1-M/M1/C8/G2/N1
NO. (Instrument No.)
When contacting the dealer from which you purchased your instrument, please quote the
instrument No.

3
IM 701830-01E
Standard Accessories
The following standard accessories are supplied with the instrument. Make sure that all items
are present and undamaged.
User's manual
Communication interface
Operation guide
Printer roll
chart*
2
B9850NX
UL/CSA standard
A1006WD VDE standard A1009WD BS standard A1054WD SAA standard A1024WD
DF Q R
Power cord (one of the following power cords
is supplied according to the instrument's suffix codes)
(x1)
(x1)
(x1)
Rubber feet
(x4)
A9088ZM
Soft case
B9946EB
Cover plates(x8)
B9946GX
Front panel protection
cover*
1
(Opaque)
B9946GA
*1 Transparent front cover (700913), sold separately, is also available.
Input modules
Check that the MODEL indicated on the input module is what you ordered.
Model Name (Abbreviation)
701855 High-Speed Isolation Module (HS_ISOL)
701856 High-Speed Module (HS)
701852 High-Resolution, High-Voltage, Isolation Module (HR_HV)
701853 High-Resolution, Isolation Module (HR)
701860 Temperature Module (TEMP)
701870 Logic Input Module*1 (LOGIC)
701880 Strain Module*2 (STRAIN)
*1 Use the Logic input module along with the dedicated probe (700986 or 700987) provided.
*2 Use the strain module along with the strain gauge bridge or the strain gauge transducer. Recommended
bridge head: 700932 (120 Ωbridge resistance) or 70933 (350 Ωbridge resistance)
MODEL
MODEL
SUFFIX
SUFFIX
NO.
NO.
Made in Japan
MODEL
SUFFIX
NO.
Made in Japan
701850
HS_ISOL
MODEL
Note
The High-Speed Isolation Module (701850) and High-Speed Module (701851) for the DL708/DL708E can
also be used. See "Appendix 7" for details.
Checking the Contents of the Package
Voltage Modules

4IM 701830-01E
Optional Accessories
The following optional accessories are available. On receiving these optional accessories, make
sure that all the items that you ordered have been supplied and that they are undamaged.
If you have any questions regarding optional accessories, or if you wish to place an order,
contact the dealer from whom you purchased the instrument.
Bridge head/cable/connector for the strain module
Bridge Head
700932
Bridge resistance 120 Ω
Length 5 m
NDIS connector*
2
A1002JC
Bridge Head
700933
Bridge resistance 350 Ω
Length 5 m
Connector Conversion Cable
700935
Length 1.5 m
(Convert MIL*
1
to NDIS*
2
)
*1 MIL-C-26482 compatible connector
*2 A connector recommended by JSNDI (The Japanese Society for Non-destructive Inspection)
Front panel Protection
cover (Clear)
700913
366924
366926 366961
758917
Measurement lead for measuring voltages of 42 V or less
Probes
Other accessories
Conversion Adapter
BNC to Banana
(female)
366921
Saftey connector
to binding post
751512
Banana(male)
to BNC
366922
RS-232
9 pin to 25 pin
conversion adapter
366971
Measurement lead for measuring voltages of 42 V or more
Non-isolated
700998
Isolated
700929
Connecting lead
(alligator clip)
B9879PX
Connecting lead
(IC clip)
B9879KX
High-Speed Logic Probe
700986
Alligator clip adaptor set
( rated voltage 300 V )
758922
Isolation Logic Probe
700987
Alligator clip adaptor set
( rated voltage 1000 V )
758929
Optional Spare Parts
The following optional spare parts are available. On receiving these optional spare parts, make
sure that all the items that you ordered have been supplied and that they are undamaged.
If you have any questions regarding optional spare parts, or if you wish to place an order,
contact the dealer from whom you purchased the instrument.
Part Name Part No. Minimum Q'ty Remarks
Roll chart B9850NX 5 Thermo-sensible paper, Total length: 30 m
Note
It is recommended that the packing box be kept in a safe place. The box can be used when you need to
transport the instrument somewhere.
Checking the Contents of the Package

5
IM 701830-01E
Safety Precautions
This instrument is an IEC safety class I instrument (provided with terminal for protective earth).
The general safety precautions in next page must be observed during all phases of operation,
service and repair of this instrument. If this instrument is used in a manner not specified in this
manual, the protection provided by this instrument may be impaired. Also, YOKOGAWA
Electric Corporation assumes no liability for the customer's failure to comply with these
requirements.
The following symbols are used on this instrument.
To avoid injury, death of personnel or damage to the instrument, the operator must refer
to an explanation in the User’s Manual or Service Manual.
Functional earth terminal (This terminal should not be used as a “Protective earth
terminal.”)
Alternating current
ON(power)
OFF(power)

IM 701830-01E
6
Make sure to comply with the following safety precautions. Not complying might
result in injury, death of personnel or damage to the instrument.
WARNING
Power Supply
Ensure the source voltage matches the voltage of the power supply before turning
ON the power.
Power Cord and Plug
To prevent an electric shock or fire, be sure to use the power cord supplied by
YOKOGAWA. The main power plug must be plugged in an outlet with protective
earth terminal. Do not invalidate protection by using an extension cord without
protective earth.
Protective Earth
The protective earth terminal must be connected to earth to prevent an electric shock
before turning ON the power.
Necessity of Protective Earth
Never cut off the internal or external protective earth wire or disconnect the wiring of
protective earth terminal. Doing so poses a potential shock hazard.
Defect of Protective Earth and Fuse
Do not operate the instrument when protective earth or fuse might be defective.
Do not Operate in an Explosive Atmosphere
Do not operate the instrument in the presence of flammable liquids or vapors.
Operation of any electrical instrument in such an environment constitutes a safety
hazard.
Do not Remove any Covers
There are some areas with high voltages. Do not remove any cover if the power
supply is connected. The cover should be removed by qualified personnel only.
External Connection
To ground securely, connect the protective earth before connecting to measurement
or control unit.
Also, when touching the circuit, turn off the power to the circuit and check that there
is no voltage being generated.
Safety Precautions

7
IM 701830-01E
How to Use this Manual
Structure of the Manual
This User’s Manual consists of 15 chapters, an Appendix and an Index as described below.
Chapter Title Content
1Functions Introduces the unit’s features, functions, and operating principles.
Please read this information to familiarize yourself with the unit’s
capabilities. This chapter does not present operational details.
2Name and Use of Briefly explains the significance and use of the unit’s controls,
Each Part connectors, and screen displays. Includes page references to help
you find detailed information quickly.
3Before Starting Presents safety precautions, and explains how to install, connect
Observation and up, and switch on the unit. Also explains how to connect the
Measurement of probes, install the input module, and how to set the date.
Waveforms
4Common Operations Explains basic operations, including acquisition start/stop,
automatic setup, parameter reset, snapshots, trace clearing, and
calibration.
5Vertical and Horizontal Explains settings related to vertical (voltage) and horizontal
Axes (time) axes. Vertical-axis settings include channel on/off, input
coupling, probe attenuation, and voltage sensitivity.
6Triggering Explains how to set up and use triggers to control timing of
waveform acquisition. Includes description of trigger modes,
trigger types, trigger source, and trigger level.
7Acquisition and Display Explains acquisition parameters (acquisition mode, record length,
input filter, history), realtime print to the built-in printer, and
realtime recording to the internal hard disk (optional), etc.
8Display Explains display format, interpolation, zoom, X-Y display,
graticule, use of overlapping (accumulated) waveform display,
and other display-related parameters.
9Waveform Analysis Explains cursor-based measurements, automatic measurements,
statistical processing, mathematical operations, and GO/NO-GO
determinations.
10 Output of Screen Data Explains how to print or store screen data to Built-in printer, to
floppy, to internal HDD (Optional), to an external SCSI device, to
a printer with a centronics interface, or to a plotter or other device
connected through the GP-IB interface.
11 Saving/Loading the Explains how to save and reload waveform data and settings to
Data/Connecting to floppy disk, internal HDD (Optional), or external SCSI device.
the PC Also explains related disk operations, including disk formatting,
file copying, and file deletion.
12 Rear-Panel Input/Output Explains external-trigger input, external-clock input, trigger
output, and video output.
13 Other Operations Explains how to set the display colors, display language, click
sound, and screen saver.
14 Troubleshooting, Gives troubleshooting advice; explains screen messages and self-
Maintenance, and test operation.
Inspection
15 Specifications Specifications on the main instrument and the input module are
summarized in tables.
Appendix Explains the relationships between time axis, sampling rate, and
record length, the format for ASCII file headers, initial values and
details on the user-defined computation.
Index Index of contents.

IM 701830-01E
8
Conventions Used in this Manual
Unit
k ................ Denotes “1000”. Example: 100 kS/s
K ............... Denotes “1024”.
Example: 640 KB (storage capacity of a floppy disk)
Used Characters
Alphanumerics enclosed in double quotation marks usually refer to characters and set values
that appear on the screen and panel.
The SHIFT + xxx key refers to first pressing the SHIFT key (the indicator above the SHIFT key
lights), and then pressing the xxx key to obtain another, specified, function.
Note
The following symbol marks are used to attract the operator’s attention.
Affixed to the instrument, indicating that for safety, the operator
should refer to the User’s Manual.
WARNING Describes precautions that should be observed to prevent the danger
of injury or death to the user.
CAUTION Describes precautions that should be observed to prevent damage to
the instrument.
Note Provides information that is important for proper operation of the
instrument.
Symbol Marks Used for Descriptions of Operations
The following symbol marks are used in Chapters 3 to 14 to distinguish certain features in
descriptions.
Function Describes settings and restrictions relating to the
operation. A detailed description of the function is
not provided. For a detailed description of the
function, refer to Chapter 1.
Operating Procedure Carry out steps in the order shown. The operating
procedures are given with the assumption that you are
not familiar with the operation. Thus, it may not be
necessary to carry out all the steps when changing
settings.
How to Use This Manual

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App
Index
IM 701830-01E
Contents
Foreword ....................................................................................................................................................... 1
Checking the Contents of the Package .......................................................................................... 2
Safety Precautions ...................................................................................................................................... 5
How to Use this Manual............................................................................................................................ 7
Chapter 1 Functions
1.1 Block Diagram .................................................................................................................................. 1-1
1.2 Setting the Vertical and Horizontal Axes ........................................................................................ 1-2
1.3 Setting a Trigger ............................................................................................................................... 1-7
1.4 Setting the Acquisition and Display Conditions............................................................................ 1-12
1.5 Analyzing the Waveform ............................................................................................................... 1-19
1.6 Other Useful Functions .................................................................................................................. 1-23
Chapter 2 Name and Use of Each Part
2.1 Front Panel/Rear Panel ..................................................................................................................... 2-1
2.2 Operation Keys/Jog Shuttle/Knobs .................................................................................................. 2-3
2.3 Screens .............................................................................................................................................. 2-6
Chapter 3 Before Starting Observation and Measurement of Waveforms
3.1 Precautions During Use .................................................................................................................... 3-1
3.2 Installing ........................................................................................................................................... 3-2
3.3 Connecting the Power Cord ............................................................................................................. 3-4
3.4 Setting the Date and Time ................................................................................................................ 3-6
3.5 Installing the Input Module .............................................................................................................. 3-7
3.6 Connecting a Probe........................................................................................................................... 3-9
3.7 Connecting a Input Cable ............................................................................................................... 3-11
3.8 Connecting a Thermocouple .......................................................................................................... 3-12
3.9 Connecting a Logic Probe .............................................................................................................. 3-13
3.10 Compensating the Probe (Phase Correction) ................................................................................. 3-15
3.11 Connecting the Bridge Head .......................................................................................................... 3-16
Chapter 4 Common Operations
4.1 Entering Values and Character Strings ............................................................................................ 4-1
4.2 Initializing Settings........................................................................................................................... 4-3
4.3 The Auto Set-up Function ................................................................................................................ 4-4
4.4 Starting and Stopping Acquisition ................................................................................................... 4-6
4.5 The Snapshot and Clear Trace Functions ........................................................................................ 4-8
4.6 Calibration ........................................................................................................................................ 4-9
4.7 Using the Help Function................................................................................................................. 4-10
4.8 Selecting the Time Base ................................................................................................................. 4-11
Chapter 5 Vertical and Horizontal Axes
5.1 Turning Channels ON/OFF .............................................................................................................. 5-1
5.2 Setting T/div ..................................................................................................................................... 5-2
5.3 Setting V/div ..................................................................................................................................... 5-4

10 IM 701830-01E
Contents
5.4 Setting the Vertical Position of a Waveform ................................................................................... 5-5
5.5 Selecting Input Coupling .................................................................................................................. 5-6
5.6 Selecting Probe Attenuation ............................................................................................................ 5-7
5.7 Setting the Bandwidth ...................................................................................................................... 5-8
5.8 Zooming in Vertical Direction ....................................................................................................... 5-10
5.9 Setting the Offset Voltage .............................................................................................................. 5-11
5.10 Using the Linear Scaling Function................................................................................................. 5-12
5.11 Inverting a Waveform..................................................................................................................... 5-14
5.12 Setting the ON/OFF of Channels and the V/div with the All Channel Setting Menu .................. 5-15
5.13 Setting the Temperature Measurement .......................................................................................... 5-16
5.14 Setting the Logic Probe .................................................................................................................. 5-18
5.15 Setting the Strain Measurement ..................................................................................................... 5-19
5.16 Using the Linear Scaling Function for the Strain .......................................................................... 5-22
5.17 Displaying the Setup Menu over the Entire Screen (Full Screen Setup) ...................................... 5-25
Chapter 6 Triggering
6.1 Setting the Trigger Mode ................................................................................................................. 6-1
6.2 Selecting a Channel for Setting Trigger Hysteresis and Trigger Level .......................................... 6-2
6.3 Setting Trigger Hysteresis for Channels 1 to 16..............................................................................6-3
6.4 Setting the Trigger Level.................................................................................................................. 6-4
6.5 Setting the Hold off Time................................................................................................................. 6-5
6.6 Setting the Trigger Position ............................................................................................................. 6-6
6.7 Setting the Trigger Delay ................................................................................................................. 6-8
6.8 Setting the Edge Trigger (SIMPLE) ................................................................................................ 6-9
6.9 Setting the A→B (n) Trigger (ENHANCED) ............................................................................... 6-10
6.10 Setting the A Delay B Trigger (ENHANCED) ............................................................................ 6-12
6.11 Setting the Edge on A Trigger (ENHANCED) ............................................................................ 6-14
6.12 Setting the OR Trigger (ENHANCED) ........................................................................................ 6-16
6.13 Setting the B>Time, B<Time or B Time Out Trigger (ENHANCED) ........................................ 6-17
6.14 Setting the Window Trigger (ENHANCED) ................................................................................. 6-19
6.15 Setting the Timer Trigger ............................................................................................................... 6-21
Chapter 7 Acquisition and Display
7.1 Setting the Record Length ................................................................................................................ 7-1
7.2 Acquisition Mode ............................................................................................................................. 7-2
7.3 Sequential Store Mode ..................................................................................................................... 7-4
7.4 Box Average Mode ........................................................................................................................... 7-5
7.5 Using the History Memory ............................................................................................................... 7-6
7.6 Realtime Print to the Built-in Printer ............................................................................................... 7-9
7.7 Realtime Record to the Internal Hard Disk (Optional) ................................................................. 7-11
Chapter 8 Display
8.1 Changing the Display Format .......................................................................................................... 8-1
8.2 Setting the Interpolation Method ..................................................................................................... 8-2
8.3 Changing the Graticule ..................................................................................................................... 8-4
8.4 Accumulated Waveform Display ..................................................................................................... 8-5
8.5 Turning the Extra Window ON/OFF ............................................................................................... 8-7
8.6 Turning Display of the Scaling Value and Trigger Mark ON/OFF ................................................ 8-8

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App
Index
IM 701830-01E
Contents
8.7 Setting the Waveform Labels ........................................................................................................... 8-9
8.8 X-Y Waveform Display ................................................................................................................. 8-10
8.9 Zooming the Waveform ................................................................................................................. 8-12
8.10 Scrolling the Waveform (Replay) .................................................................................................. 8-15
Chapter 9 Waveform Analysis
9.1 Measuring Waveforms using Cursors .............................................................................................. 9-1
9.2 Automatic Measurement of Waveform Parameters ........................................................................ 9-4
9.3 Setting Computing Range and Display Units, and Recomputing ................................................... 9-9
9.4 Waveform Addition, Subtraction and Multiplication .................................................................... 9-10
9.5 Binary Computation ....................................................................................................................... 9-11
9.6 Phase Shifted Addition, Subtraction and Multiplication ............................................................... 9-13
9.7 Simultaneous Binary Computation and D/A Conversion of All Channels................................... 9-15
9.8 Displaying Power Spectrums ......................................................................................................... 9-17
9.9 Manual Scaling ............................................................................................................................... 9-18
9.10 Executing User Defined Computation (Optional) ......................................................................... 9-19
Chapter 10 Output of Screen Data
10.1 Loading Paper Roll in Printer ........................................................................................................ 10-1
10.2 Feeding the Chart............................................................................................................................ 10-3
10.3 Outputting to Printer ....................................................................................................................... 10-4
10.4 Outputting to a Printer with a Centronics Interface....................................................................... 10-6
10.5 GP-IB/RS-232 Interface : Data Output and Format Selection ...................................................... 10-8
10.6 Outputting to Floppy Disk, Internal Hard Disk (Optional) or External SCSI Device................ 10-12
Chapter 11 Saving/Loading the Data/Connecting to the PC
11.1 Floppy Disks ................................................................................................................................... 11-1
11.2 Internal Hard Disk (Optional) ........................................................................................................ 11-2
11.3 Connecting a SCSI Device ............................................................................................................. 11-3
11.4 Formatting Disks ............................................................................................................................ 11-4
11.5 Selecting the Medium and Directory ............................................................................................. 11-7
11.6 Saving/Loading Waveform Data .................................................................................................... 11-8
11.7 Saving/Loading Set-up Data ........................................................................................................ 11-11
11.8 Saving Waveform Data in ASCII, Binary or AG Series Format ................................................ 11-13
11.9 Deleting Files ................................................................................................................................ 11-15
11.10 Copying Files ................................................................................................................................ 11-16
11.11 Saving Automatic Measurement Results ..................................................................................... 11-17
11.12 Changing the SCSI IDs ................................................................................................................ 11-18
11.13 Connecting to a PC ....................................................................................................................... 11-19
Chapter 12 External Trigger Input/Output, Video Signal Output
12.1 External Trigger Input (TRIG IN) ................................................................................................. 12-1
12.2 Trigger Output (TRIG OUT).......................................................................................................... 12-2
12.3 Video Signal Output (VIDEO OUT) .............................................................................................12-3
Chapter 13 Other Operations
13.1 Setting the Screen Color ................................................................................................................. 13-1
13.2 Setting the Message Language, Click Sound and Brightness of the LCD .................................... 13-3

12 IM 701830-01E
Contents
13.3 Setting the Screen Saver Function ................................................................................................. 13-4
13.4 Setting the Action on Trigger ......................................................................................................... 13-5
13.5 Locking the Keys ............................................................................................................................ 13-7
13.6 ON/OFF the Backlight ................................................................................................................... 13-8
Chapter 14 Troubleshooting, Maintenance and Inspection
14.1 Breakdown Troubleshooting .......................................................................................................... 14-1
14.2 Error Messages and Corrective Actions ........................................................................................ 14-2
14.3 Self-Diagnostic Test (Self Test) ..................................................................................................... 14-5
14.4 Checking the System Condition ..................................................................................................... 14-7
14.5 Warranties on Parts......................................................................................................................... 14-8
Chapter 15 Specifications
15.1 Input Section ................................................................................................................................... 15-1
15.2 Trigger Section ............................................................................................................................... 15-1
15.3 Time Axis ....................................................................................................................................... 15-2
15.4 Display ............................................................................................................................................ 15-2
15.5 Functions ......................................................................................................................................... 15-2
15.6 External Trigger Input/Output, Video Signal Output .................................................................... 15-4
15.7 GP-IB Interface ............................................................................................................................... 15-4
15.8 RS-232 Interface ............................................................................................................................. 15-4
15.9 Centronics Interface........................................................................................................................ 15-4
15.10 SCSI Interface................................................................................................................................. 15-5
15.11 Built-in Printer ................................................................................................................................ 15-5
15.12 Built-in Floppy Disk Drive ............................................................................................................ 15-5
15.13 Internal Hard Disk (Optional) ........................................................................................................ 15-5
15.14 32-bits Extended Logic Input (Optional) ....................................................................................... 15-6
15.15 GO/NOGO Input/Output ................................................................................................................ 15-6
15.16 General ............................................................................................................................................ 15-7
15.17 External Dimensions ...................................................................................................................... 15-8
15.18 High-speed Isolation Module (701855) ......................................................................................... 15-9
15.19 High-speed Module (701856) ...................................................................................................... 15-10
15.20 High-Resolution, High-Voltage, Isolation Module (701852) ..................................................... 15-11
15.21 High-Resolution, Isolation Module (701853).............................................................................. 15-12
15.22 Temperature Module (701860) .................................................................................................... 15-13
15.23 Logic Input Module (701870) ...................................................................................................... 15-14
15.24 Strain Module (701880) ............................................................................................................... 15-15
Appendix
Appendix 1 Relationship between the Time Axis Setting, Sample Rate and Record Length............ App-1
Appendix 2 Relationship between the Record Length and Acquisition Mode................................... App-3
Appendix 3 How to Calculate the Area of a Waveform...................................................................... App-4
Appendix 4 ASCII Header File Format ............................................................................................... App-5
Appendix 5 List of Defaults ................................................................................................................. App-8
Appendix 6 About User Defined Computations .................................................................................. App-9
Appendix 7 For Input Module 701850 and 701851 .......................................................................... App-14
Index ............................................................................................................................................ Index-1

1-1
1
IM 701830-01E
Functions
1.1 Block Diagram
System Configuration
AG
SCSI Interface
Built-in printer
Signal input
Object to be
measured
Video output
External trigger input
GP-IB/RS-232
interface
Screen data
Waveform data
Waveform data
Set-up data
Screen data
Personal Computer
Yokogawa's AG Series
HP-GL compatible
plotter
Printer
Data saved to floppy disk
Trigger out
External SCSI device
DL716
SCSI Interface
Waveform data
Set-up data
Screen data
Waveform data
Centronics compatible
printer
Centronics
interface
External clock input
Block Diagram
ATT AD
FLT
16
Isolation Block
H
L
+
OFFSET
AMP
+
OFFSET
AMP
ATT AD
Isolator
FLT
12
Isolation Block
ATT AD
FLT
12
+
OFFSET
AMP
AD
FLT
Isolation Block
H
L
AMP
RJC
1chip
CPU
ADD
ADD
CPU
SCSI SCSI
Port
HDD
GPIB GPIB
Port
RS232 Serial
Port
Centro Centro
Port
16
8
8
POD-A
POD-B
Bridge Excitation
AD
FLT
16
Isolation Block
Floating Common
+
-AMP
DIFA
+
-
Strain module
Module Block Diagram
Plug-in module CH1 to Ch8 Acquisition Block Diagram CPU Block Diagram
High-speed Isolation module
High-speed module
High-resolution, High-voltage, Isolation
/High-resolution, Isolation module
Anti-aliasing filter
Temperature module
Logic Input module
High-speed Logic Probe
Isolated Logic Probe
Acquisition
Data Processing
(ADP)
CH1 to CH4
Acquisition
Data Processing
(ADP)
CH5 to CH8
Optional memory
(Max. 16MW/CH)
Optional memory
(Max. 16MW/CH)
Acquisition
Memory
(200kW/CH)
Acquisition
Memory
(200kW/CH)
Acquisition Control
Logic ASIC
(ACL)
Main Memory
Display ASIC 10.4 Color
TFT Display
Display
RAM Built-in
printer
FDD
Ext clk in
Ext trig in/out
Acquisition
Data Processing
(ADP)
(Logic1, Logic2)
Acquisition
Memory
Extended Logic
Input
Signal flow
The signal flow at the input end varies depending on the module. Here, the high-Speed
Isolation Module is taken as an example (refer to the block diagram for the signal flow of each
module).
First, the signal input from the input terminal is processed at the input section. In the input
module (High-Speed Isolation), the input signal is attenuated/amplified by the attenuator (ATT),
the adder, and the preamplifier. Then, the signal is isolated through the analog isolator.
Bandwidth limiting is done immediately before the A/D converter.
In the A/D converter, the input signal is sampled at a sampling rate of 10 MS/s (10 million
times in 1 second) and converted to digital data.
The digital signals of the sixteen channels in the CPU board go through the primary and
secondary processing circuits and are finally displayed on the TFT display. In the primary
processing circuit, the ADP(acquisition data processor)/ACL(acquisition control processor)
indicated in the block diagram writes the signal to the memory. In the secondary processing
circuit, the high-speed microprocessor converts the data for data compression and image
processing.
Chapter 1 Functions

1-2 IM 701830-01E
1.2 Setting the Vertical and Horizontal Axes
Time Axis ≡Page 5-2. ≡
Setting the time axis
When using the internal clock, set the time axis scale as a time duration per division of the grid.
The setting range is 500 ns/div to 100 ks/div*. The time range in which waveform is displayed
is “time axis setting x 10”, as the display range along the horizontal axis is 10 divisions.
* 100 ks indicates 100000 seconds (27 hours 46 minutes 40 seconds).
1div=500 µs
10div
1div=1 ms
Note
Display of time axis direction
The number of display points in the time axis direction on a 10-div screen is 1002 points (i.e. 2 points per
raster). Processing therefore varies according to record length, as described immediately below. (for more
details on the relation between time axis, record length and displayed record length, refer to Appendix 1).
•If record length exceeds number of screen display points (see page 8-2)
If the display style is set to “P-P”, the oscilloscope uses P-P compression to generate a 1002-point
display (regardless of interpolation setting).
If interpolation is “OFF” and the display style is set to “Decim,” the instrument thins the data to
generate a 1002-point display. If the display style is set to “All,” then all data points are displayed.
•If record length is less than number of screen display points
The instrument interpolates the data to generate the display. (See page 1-16.)
501 raster
0 500
Record length
Record length
Sampling data
Time axis
P-P
compression
Voltage axis
Relationship between the time axis setting, sample rate and record length
Changing the time axis causes corresponding changes in the sampling rate and the acquisition record
length. For more detailed information, refer to Appendix 1.

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IM 701830-01E
Functions
1.2 Setting the Vertical and Horizontal Axes
Sample rate
Changing the time axis causes a corresponding change in the sampling rate. Maximum sampling rate is
10MS. The waveform can only be displayed correctly at frequencies up to half the sample rate, due to
Nyquist’s theorem*. Sample rate is expressed in S/s (number of samples per second).
*If the sample rate is higher than the frequency of the input signal, high frequency components will be
lost. In this case, a phenomenon in which high frequency components change to lower frequency
components occurs, due to Nyquist’s theorem. This phenomenon is called aliasing. Aliasing can be
avoided by setting the acquisition mode to envelope mode and acquiring the waveform.
Aliasing signal Input signal Sampling point
Time axis setting and roll mode display
If the trigger mode is auto or auto level; T/div is between 100 ms/div and 100 ks/div; and the sample rate is
under 200 kS/s, instead of the waveform display being updated (update mode) by the trigger, the waveform
is displayed in roll mode. In roll mode, the waveform display flows right to left on the screen erasing the
oldest data as new data is acquired. A waveform can be observed in the same way as it is recorded on a pen
recorder. This mode is useful when you are observing a signal which repeats or which fluctuates slowly.
This mode is also useful when you want to detect glitches (fast spikes on a waveform) which occur
intermittently.
Limitation during roll mode display
•When the trigger mode is set to normal or time, the waveform is not displayed in roll mode except when
“Log Start”/“Single Start” is selected from the ACQ menu.
•The operation when “Single Start”/“Log Start” is selected from the ACQ menu is as follows.
By pressing the “Single Start” soft key, the trigger mode (Auto) is set to normal mode. After acquiring
the specified record length of data following a trigger activation, the displayed waveform stops.
By pressing the “Log Start” soft key, the trigger mode is disabled. After acquiring the specified record
length of data, the displayed waveform stops. For the timer trigger, the trigger is activated at the
specified time and the data are acquired once.
•The T/div setting during the roll mode display may sometimes be inadequate for observing the changes
in the waveform on the main area (see page 1-17). In this case, you can use the zoom area to check the
changes in the waveform.
Vertical Sensitivity (For Voltage Modules) ≡Page 5-4. ≡
The V/div (vertical sensitivity) setting is used to adjust the amplitude of the displayed
waveform so that the waveform can be observed easily.
The V/div setting is made by setting the voltage value per division on the screen grid.
The vertical sensitivity is changed by switching the input section with a different attenuator
having a different damping factor. The setting changes in steps (1 V/div →2 V/div →5 V/
div...).
1div = 1 V 1div = 500 mV
When V/div is switched from 1 V/div to 500 mV/div
Note
Vertical sensitivity and measurement resolution
To get precise readings, it is recommended that you set the vertical sensitivity so that the waveform’s
maximum and minimum amplitudes are close to the top and bottom of the screen.
This instrument uses a 12 bit (on High-Speed Isolation/High-Speed Modules) or a 16 bit (on High-
Resolution, High-Voltage, Isolation/High-Resolution, Isolation Modules) A/D converters and samples the
input signal with a resolution of 4000 levels (on High-Speed Isolation/High-Speed Modules) or 64000
levels (on High-Resolution, High-Voltage, Isolation/High-Resolution, Isolation Modules). Also, the
waveform is displayed in 500 levels (on High-Speed Isolation/High-Speed Modules) or 8000 levels (on
High-Resolution, High-Voltage, Isolation/High-Resolution, Isolation Modules) per 1 div on the grid.

1-4 IM 701830-01E
1.2 Setting the Vertical and Horizontal Axes
Vertical Position (for Voltage/Logic Input Modules Only) ≡Page 5-5. ≡
Since a total of eight input waveforms can be displayed, they may overlap each other, making
observation difficult. In this case, the waveforms can be moved in the vertical direction so that
can be observed more easily.
The vertical position can be set to any value in the range between ±4 div.
Changing the V/div setting, the vertical axis setting is rescaled with respect to the vertical
position.
Position:2div
Position:-2div
Position:0div
Input coupling (For Voltage Modules) ≡Page 5-6. ≡
When you only want to observe the amplitude of an alternating current signal, eliminating the
direct current components from the input signal makes observation easier. You may also want
to check the ground level or observe the input signal waveform with the offset voltage removed.
In these cases, you can change the input coupling setting. This will switch the coupling method,
which determines how the input signal is input to the vertical control circuit (voltage axis).
The input coupling method can be chosen from the following.
AC
The input signal is sent through a capacitor to the attenuator in
the vertical control circuit. This method can be used when you
just want to observe the amplitude of the alternating current
signal, eliminating the DC components from the input signal.
DC
The input signal is sent directly to the attenuator in the vertical
control circuit.
This method can be used when you want to observe both the DC
and AC components of the vertical input signal.
GND
The ground signal, not the input signal, is connected to the
attenuator in the vertical control circuit. This method enables
observation of the ground level on the screen.
Probe Attenuation (For Voltage Modules) ≡Page 5-7. ≡
When making voltage measurements, using a probe to connect the circuit being measured and
the measurement input terminals has the following advantages:
•the voltage and current of the circuit to be measured are not disturbed;
•asignal can be input without distortion;
•the measurement voltage range of the oscilloscope can be widened.
When a probe is used, the probe attenuation must match the instrument’s attenuation setting so
that the input voltage can be measured directly.
Set to 10:1 or 1:1 when using the accessory voltage probe (700998).
Set to 10:1 when using the accessory isolating probe (700929).
In addition to 10:1, attenuations of 1:1, 100:1 and 1000:1 are provided.
When using a probe or cable besides the ones provided as accessories, set the appropriate
attenuation ratio meeting its specification.
Vertical
control
circuit
Input terminal
Vertical
control
circuit
Input terminal
Vertical
control
circuit
Input terminal

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IM 701830-01E
Functions
1.2 Setting the Vertical and Horizontal Axes
Bandwidth Limit (For Voltage, Temperature, and Strain Modules) ≡Page 5-8. ≡
The bandwidth limit of each module can be set individually. By setting a bandwidth limit, the
noise component of the input signal can be deleted during waveform observation.
Zooming in the Vertical Direction ≡Page 5-10. ≡
Every displayed waveform can be enlarged/reduced by a factor between “x0.1 to x100” in the
vertical direction. Zooming is done with the center at the vertical position.
1div=1V 1div=500mV
When “V Zoom”is switched from “x1”to “x2”
Offset Voltage (For Voltage Modules) ≡Page 5-11. ≡
Since the signal you wish to see can be moved to the vertical position by adding an offset
voltage, the observation can be made with a higher voltage sensitivity.
Note that the offset value has no affect on cursor measurements, automatic measurements, and
mathematical calculations.
1 V/div,Offset :0V,Position:0div 1 V/div,Offset : -2 V 500 mV/div,Offset : -2 V
Inverted Waveform Display ≡Page 5-14. ≡
The voltage axis is inverted about the vertical position as shown below, and the waveform is
displayed.
Vertical position
Original waveform (not inverted) Inverted waveform

1-6 IM 701830-01E
Temperature Measurement ≡Page 5-16. ≡
Types of thermocouples
The types of thermocouples available are as follows.
K, E, J, T, L, U, N, R, S, B, W and A (KPvsAu7Fe)
Temperature unit
Can specify °C, °F or K.
Reference Junction Compensation (RJC)
•The voltage generated by a thermocouple depends on the temperature of the spot of
measurement and the reference junction temperature. In this case, the function to
compensate the temperature on the measurement instrument side to the cold junction is
referred to as reference junction compensation.
•This instrument can turn ON/OFF the internal RJC circuit.
ON : Use this setting to enable the reference junction compensation by the internal RJC
circuit.
OFF : Use this setting when checking the temperature measurement value, or when using an
external reference junction (0 °C).
Strain measurement ≡Page 5-19. ≡
You can measure the strain by connecting a strain gauge bridge (bridge head) or a strain gauge
transducer to the strain module.
1.2 Setting the Vertical and Horizontal Axes

1-7
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IM 701830-01E
Functions
1.3 Setting a Trigger
Trigger Type ≡Chapter 6. ≡
There are two principal trigger types which you can use with the instrument.
Simple trigger
Enhanced trigger
Simple trigger →Pages 6-1 to 6-9.
Triggers on the edge of a single signal (edge trigger).
Enhanced trigger →Pages 6-1 to 6-8 and 6-10 to 6-20.
This is a complex trigger. The following eight types of enhanced trigger are available.
A→B(n) trigger
A Delay B trigger
Edge on A trigger
OR Trigger
B>Time trigger
B<Time trigger
B Time Out trigger
Window trigger
Edge trigger →Page 6-9.
The edge trigger is the simplest type of trigger and uses a single trigger source to activate a
trigger. A trigger is activated when the trigger source exceeds (rises above) or drops (falls)
below the preset trigger level*.
In addition to input signals (CH1 to CH16 and 32-bits extended logic input), the external trigger
input signal and the commercial power supply signal can be used as a trigger source.
*“A trigger is activated” refers to the condition in which trigger conditions are satisfied and a waveform is
displayed.
Trigger level
A trigger is activated at this point if
"Rise" ( ) is selected.
Trigger source
A →B(n) trigger (Enhanced Trigger) →Page 6-10.
This function activates a trigger the nth time condition B becomes true after condition A has
become true.
L
HL L H
HHHHLLL
H
CH1
CH2
CH1
CH2
When pattern A : CH1 = L, CH2 = L, Enter, When patternB : CH1 = H, CH2 = H, Enter, n = 3
Trigger
LH HLL
B(1) B(2) B(3)
Pattern A is true