YOKOGAWA DL1720E User manual

Digital Oscilloscope
Communication Interface
IM 701730-17E
1st Edition
DL1720E/DL1740E/DL1740EL

i
IM 701730-17E
1st Edition : July 2004 (YK)
All Rights Reserved, Copyright © 2004 Yokogawa Electric Corporation
Foreward
Thank you for purchasing YOKOGAWA’s DL1720E/DL1740E/DL1740EL Digital
Oscilloscope.
This Communication Interface User’s Manual describes the functions and commands of
GP-IB, USB, and Ethernet (optional) interface. To ensure proper use of the GP-IB/USB/
Ethernet (optional) interfaces, please read this manual thoroughly.
Keep the manual in a safe place for quick reference whenever a question arises.
Four manuals are provided with the DL1720E/DL1740E/DL1740EL including this
Communication Interface User’s Manual.
Manual Name Manual No. Description
DL1720E/DL1740E/DL1740EL IM 701730-01E Describes all functions except for the
User’s Manual communications functions and operation
procedures of the instrument.
DL1720E/DL1740E/DL1740EL IM 701730-17E Describes the communications functions
Communication Interface of the GP-IB/USB/Ethernet interfaces.
User’s Manual (CD-ROM)
DL1720E/DL1740E/DL1740EL IM 701730-02E Provides a brief explanation of the functions
Operation Guide and basic operating procedures of the
DL1720E/DL1740E/DL1740EL.
DL1740E/DL1740EL IM 701730-51E Describes the serial bus signal analysis
Serial Bus Signal Analisis function (option).
Function User’s Manual
Notes
•The contents of this manual are subject to change without prior notice as a result of
improvements in instrument’s performance and functions.
•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.
•Copying or reproduction of all or any part of the contents of this manual without
YOKOGAWA’s permission is strictly prohibited.
USB Interface and Ethernet Interface
• The following items must be installed on the PC to access the communications
functions using the USB interface.
1. A dedicated library for the USB interface.
2. A USB device driver for the PC-to-DL1720E/DL1740E/DL1740EL connection.
• The following item must be installed on the PC to access the communications
functions using the Ethernet interface.
1. A dedicated library for the network interface.
The library and the driver above can be downloaded from the following Web page.
http://www.yokogawa.com/tm/dl_driver.htm

ii IM 701730-17E
Trademarks
•Microsoft, MS-DOS, Visual C++, Windows, Windows NT, and Windows XP are either
registered trademarks or trademarks of Microsoft Corporation in the United States
and/or other countries.
• Adobe, Acrobat, and PostScript are either trademarks or registered trademarks of
Adobe Systems incorporated.
•For purposes of this manual, the TM and ® symbols do not accompany their
respective trademark names or registered trademark names.
•The TCP/IP software and TCP/IP-related documentation accompanying this
instrument was developed/created from the BSD Networking Software, Release 1
licensed from the Regents of the University of California.
•Other product names are trademarks or registered trademarks of their respective
holders.
Revisions
1st Edition: July 2004

iii
IM 701730-17E
How to Use this Manual
Structure of this Manual
This User’s Manual consists of seven chapters, an Appendix and an Index as described
below.
Chapter 1 Overview of the GP-IB Interface
Describes the functions and specifications of the GP-IB interface.
Chapter 2 Overview of the USB Interface
Describes the functions and specifications of the USB interface.
Chapter 3 Overview of the Ethernet Interface (Option)
Describes the functions and specifications of the Ethernet interface.
Chapter 4 Before Programming
Describes formats used when sending a command.
Chapter 5 Commands
Describes each command.
Chapter 6 Status Report
Describes the status byte, various registers and queues.
Chapter 7 Sample Programs
Sample programs, written in Visual BASIC, for MS-DOS/V machines
equipped with the following GP-IB board: PCI-GPIB IEEE-488.2, from
National Instruments.
Appendix
Contains references including the ASCII character code table.
Index
Provides an index ordered alphabetically.

iv IM 701730-17E
Conventions Used in this Manual
Symbols
The following symbols are used in to this manual.
Improper handling or use can lead to injury to the
user or damage to the instrument. This symbol
appears on the instrument to indicate that the user
must refer to the user’s manual for special
instructions. The same symbol appears in the
corresponding place in the user’s manual to identify
those instructions. In the manual, the symbol is used
in conjunction with the word “WARNING” or
“CAUTION.”
WARNING Describes precautions that should be observed to
prevent serious injury or death to the user.
CAUTION Describes precautions that should be observed to
prevent minor or moderate injury, or damage to the
instrument.
Note
Provides important information for the proper
operation of the instrument.
Terms Used for Descriptions of Operations
The following terms are used in chapters 1 to 3 to distinguish certain features in
descriptions.
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.
Explanation
Describes settings and restrictions relating to the
operation.
Notations Used in the Procedures
Panel Keys and Soft keys
Bold characters used in the procedural explanations indicate characters that are marked on the
panel keys or the characters of the soft keys displayed on the screen menu.
SHIFT+Panel Key
SHIFT+key means you will press the SHIFT key to turn ON the green indicator that is located
above the SHIFT key and then press the panel key. The setup menu marked in purple above
the panel key that you pressed appears on the screen.
Jog Shuttle & SELECT
Jog shuttle & SELECT indicates selecting or setting parameters and entering values using the
jog shuttle, the SELECT key, and other keys. For details on the procedure, see section 4.1 or
4.2.
Units
k: Denotes “1000.” Example: 100 kS/s
K: Denotes “1024.” Example: 459 KB (file data size)
How to Use this Manual

v
IM 701730-17E
Symbols Used in Syntax Descriptions
Symbols which are used in the syntax descriptions in Chapter 4 are shown below.
These symbols are referred to as BNF notation (Backus-Naur Form). For detailed
information, refer to page 4-5 to 4-6.
Symbol Description Example Example of Input
<> Defined value CHANnel <x> <x>=1 to 4 -> CHANNEL2
{} One of the options in {} is selected. COUPling {AC|DC|GND} -> COUPLING AC
|Exclusive OR
[] Abbreviated TRIGger [:SIMPle]:SLOPe -> TRIGger:
SLOPe
How to Use this Manual

vi IM 701730-17E
Contents
Foreward ......................................................................................................................................... i
How to Use this Manual ................................................................................................................. iii
Chapter 1 Overview of the GP-IB Interface
1.1 Names of the Parts and their Functions ........................................................................ 1-1
1.2 Connection via the GP-IB Interface ............................................................................... 1-2
1.3 GP-IB Interface Functions ............................................................................................. 1-3
1.4 GP-IB Interface Specifications ....................................................................................... 1-4
1.5 Setting up this Instrument (GP-IB) ................................................................................. 1-5
1.6 Response to Interface Messages .................................................................................. 1-6
Chapter 2 USB Interface
2.1 Names of the Parts and their Functions ........................................................................ 2-1
2.2 USB Interface Functions and Specifications.................................................................. 2-2
2.3 Connection via the USB Interface.................................................................................. 2-4
2.4 Setting up this Instrument (USB) ................................................................................... 2-5
Chapter 3 Ethernet Interface (Option)
3.1 Names of the Parts and their Functions ........................................................................ 3-1
3.2 Ethernet Interface Functions and Specifications ........................................................... 3-2
3.3 Connection via the Ethernet Interface ........................................................................... 3-4
3.4 Setting up this Instrument (Network) ............................................................................. 3-5
Chapter 4 Before Programming
4.1 Messages ...................................................................................................................... 4-1
4.2 Commands .................................................................................................................... 4-3
4.3 Response....................................................................................................................... 4-5
4.4 Data ............................................................................................................................... 4-5
4.5 Synchronization with the Controller ............................................................................... 4-8
Chapter 5 Commands
5.1 A List of Commands....................................................................................................... 5-1
5.2 ACQuire Group ............................................................................................................ 5-15
5.3 ASETup Group ............................................................................................................ 5-17
5.4 CALibrate Group .......................................................................................................... 5-17
5.5 CHANnel Group ........................................................................................................... 5-19
5.6 CLEar Group................................................................................................................ 5-22
5.7 COMMunicate Group ................................................................................................... 5-23
5.8 CURSor Group ............................................................................................................ 5-25
5.9 DISPlay Group ............................................................................................................. 5-33
5.10 FILE Group ..................................................................................................................5-38
5.11 GONogo Group............................................................................................................ 5-44
5.12 HCOPy Group.............................................................................................................. 5-52
5.13 HISTory Group ............................................................................................................. 5-55
5.14 IMAGe Group............................................................................................................... 5-60
5.15 INITialize Group ........................................................................................................... 5-62
5.16 MATH Group ................................................................................................................ 5-63
5.17 MEASure Group .......................................................................................................... 5-66
5.18 PHASe Group .............................................................................................................. 5-78

vii
IM 701730-17E
5.19 PRESet Group ............................................................................................................. 5-79
5.20 RECall Group............................................................................................................... 5-82
5.21 SEARch Group ............................................................................................................ 5-83
5.22 SNAP Group ................................................................................................................ 5-92
5.23 SSTart Group ............................................................................................................... 5-92
5.24 STARt Group ............................................................................................................... 5-92
5.25 STATus Group ............................................................................................................. 5-93
5.26 STOP Group ................................................................................................................ 5-94
5.27 STORe Group .............................................................................................................. 5-95
5.28 SYSTem Group ............................................................................................................ 5-96
5.29 TIMebase Group .......................................................................................................... 5-99
5.30 TRIGger Group .......................................................................................................... 5-100
5.31 WAVeform Group ....................................................................................................... 5-111
5.32 XY Group ................................................................................................................... 5-114
5.33 ZOOM Group ............................................................................................................. 5-116
5.34 Common Command Group ........................................................................................ 5-118
Chapter 6 Status Report
6.1 Overview of the Status Report ....................................................................................... 6-1
6.2 Status Byte .................................................................................................................... 6-2
6.3 Standard Event Register................................................................................................ 6-3
6.4 Extended Event Register ............................................................................................... 6-4
6.5 Output Queue and Error Queue .................................................................................... 6-5
Chapter 7 Sample Program
7.1 Before Programming...................................................................................................... 7-1
7.2 Image of Sample Program ............................................................................................. 7-2
7.3 Initialize/Error/Execute ................................................................................................... 7-3
7.4 Sets/Queries the T/Div ................................................................................................... 7-6
7.5 Data Output in Word Format (2 bytes)........................................................................... 7-8
7.6 Sets/Queries Measure Value ....................................................................................... 7-11
Appendix
Appendix 1 ASCII Character Code ......................................................................................App-1
Appendix 2 Error Messages .................................................................................................App-2
Appendix 3 Overview of IEEE 488.2-1992 ...........................................................................App-4
Appendix 4 Waveform Parameter Name Correspondence Table ........................................App-6
Index
Contents
1
2
3
4
5
6
7
App
Index

1-1
IM 701730-17E
Overview of the GP-IB Interface
1
1.1 Names of the Parts and their Functions
Chapter 1 Overview of the GP-IB Interface
1.1 Names of the Parts and their Functions
Front Panel
HELP
ESC
SELECTRESET
SIMPLE
ACTION DELAY
MODE POSITION
MATHMISCFILE
CLEAR
TRACE
HISTORY
MEASURE
SETUP
PRESET
DISPLAY
CURSOR
X -Y
CH 1
CH 2
CH 3
CH 4
V DIV
POWER
TIME DIV
MENU
COPY IMAGE SAVE
MENU PHASE
SHIFT
ZOOM
SEARCH
HORIZONTAL
VERTICAL
GO/NOGO
COMP
ENHANCED
ACQ STA RT/ ST OP
TRIGGER
TRIG D
SNAP
SHOT
1GS/s 500MHz
DIGITAL OSCILLOSCOPE
CH1 CH2 CH3 CH4
POWER
CH1 CH2
EXT.
1M /20pF 400Vpk CAT 50 5Vrms,10Vpk
<
_<
_
1M /20pF 400Vpk CAT 50 5Vrms,10Vpk
<
_<
_1M /20pF 40Vpk
<
_
MISC Key (Page 1-5)
Press to enter the communication settings
such as the address and the timeout.
SHIFT Key+CLEAR TRACE Key
Press to switch from remote mode to local
mode which allows key operation.
However, this is not possible if Local Lockout
has been set by the controller (refer to page 1-6).
• DL1720E
• DL1740E/DL1740EL
Rear Panel
GO/
NO-GO
TRIG OUT
(TTL )
PROBE POWER ( 12V DC )
A
B
USB
USB
LINK
ETHERNET
GP - IB ( IEEE488 )
100BASE-TX
VIDEO OUT (VGA)
ACT
PERIPHERAL
ISM 1-A N200
MAIN POWER
100-120V
/220-240V AC
250VA MAX
50/60Hz
FUSE
250V T 4A
OFF ON
EXT CLOCK IN
EXT TRIG IN
TRIG GATE IN
40Vpk 1M
GO/
NO-GO
TRIG OUT
(TTL )
PROBE POWER ( 12V DC )
A
B
C
D
<
_
GP-IB Connector
This connector is for connecting the
controller (such as a PC) with the GP-IB
cable. For information on how to connect
the GP-IB cable, refer to the following
page.
• DL1720E
• DL1740E/DL1740EL

1-2 IM 701730-17E
1.2 Connection via the GP-IB Interface
1.2 Connection via the GP-IB Interface
GP-IB Cable
The GP-IB connector on the side panel of the DL1720E/DL1740E/DL1740EL is a 24-pin
connector that conforms to IEEE Standard 488-1978. Use a GP-IB cable that also
conforms to IEEE Standard 488-1978.
Connection Method
Connect the GP-IB cable as shown below.
PERIPHERAL
USB
USB
ISM 1-AN200
LINK ACT
Connection Precautions
• Be sure to tighten the screws on the GP-IB cable connector firmly.
•The instrument can be connected to more than one item of equipment (e.g. a
personal computer) if more than one GP-IB cable is used. However, it is not possible
to connect more than 15 items of equipment (including the controller) to a single bus.
•If you connect the instrument to more than one item of equipment, make sure that a
different address is used for each item.
• Each connecting cable must be 2 m or less in length.
•The total length of all the cables must not exceed 20 m.
•While communications are in progress, more than two-thirds of the connected
equipment items must be turned ON.
•When connecting more than one item of equipment, connect them so that the
connection route forms a star or linear configuration. Loop or parallel wiring is not allowed.
CAUTION
Be sure to switch off power to both your PC and the oscilloscope before
connecting or disconnecting cables. Failure to switch power off may cause
internal circuit failure or improper operation.

1-3
IM 701730-17E
Overview of the GP-IB Interface
1
1.3 GP-IB Interface Functions
GP-IB Interface Functions
Listener Function
•Allows you to make the settings which you can make using the panel keys on the
instrument, except for the power ON/OFF and GP-IB communications settings.
•Receives commands from a controller requesting output of setup and waveform data.
•Also receives status report commands.
Talker Function
Outputs setup and waveform data.
Note
The listen-only, talk-only and controller functions are not available on this instrument.
Switching between Remote and Local Mode
When Switched from Local to Remote Mode
Remote mode is activated when a REN (Remote Enable) message is received from a
controller while local mode is active.
•REMOTE is displayed on the upper right of the screen.
•All front panel keys except SHIFT+CLEAR TRACE can no longer be operated any
more.
•Settings entered in local mode are retained.
When Switched from Remote to Local Mode
Pressing SHIFT+CLEAR TRACE in remote mode puts the instrument in local mode.
However, this is not possible if Local Lockout has been set by the controller (page 1-6).
• The REMOTE indicator on the upper right of the screen is turned off.
•All front panel keys are operative.
•Settings entered in remote mode are retained.
Note
The GP-IB interface cannot be used simultaneously with other communications interfaces
(USB, or Ethernet).
1.3 GP-IB Interface Functions

1-4 IM 701730-17E
1.4 GP-IB Interface Specifications
GP-IB Interface Specifications
Electrical and Mechanical Specifications: Conforms to IEEE Standard 488-1978.
Interface Functions: Refer to the table below.
Protocol: Conforms to IEEE Standard 488.2-1992.
Code: ISO (ASCII) code
Mode: Addressable mode
Address Setting: Addresses 0 to 30 can be selected from the
GP-IB setting screen, displayed when you
press the MISC key.
Remote Mode Clear: Remote mode can be cleared by pressing
SHIFT key+CLEAR TRACE key. However,
this is not possible if Local Lockout has been
set by the controller.
Interface Functions
Function Subset Name Description
Source Handshaking SH1 Full source handshaking capability
Acceptor Handshaking AH1 Full acceptor handshaking capability
Talker T6 Basic talker capability, serial polling, untalk on
MLA (My Listen Address), no talk-only
capability
Listener L4 Basic listener capability, unlisten on MTA (My
Talk Address), no listen-only capability
Service Request SR1 Full service request capability
Remote Local RL1 Full remote/local capability
Parallel Poll PP0 No parallel polling capability
Device Clear DC1 Full device clear capability
Device Trigger DT0 No device trigger capability
Controller C0 No controller function
Electrical Characteristic E1 Open collector
Data Transfer Rate
The table below shows approximate response times for output of waveform data,
assuming the following configuration.
Model: 701730
Controller: PC (Pentium4 12.3 GHz, OS (Windows 2000 Professional)
GB-IB Board: NI PCI-GPIB
Programming Language: Visual C++
Data Volume Byte Format Word Format ASCII Format
1000 approx. 62.7 ms approx. 68.9 ms approx. 458 ms
10000 approx. 109.6 ms approx. 156.3 ms approx. 4.5 s
100000 approx. 646.2 ms approx. 1216.4 ms approx. 45.3 s
1000000 approx. 6268.1 ms approx. 11720.0 ms approx. 452.7 s
1.4 GP-IB Interface Specifications

1-5
IM 701730-17E
Overview of the GP-IB Interface
1
1.5 Setting up this Instrument (GP-IB)
Procedure
Selecting the Communication Interface
1. Press MISC. The MISC menu appears.
2. Press the Remote Control soft key. The Remote Cntl menu appears.
3. Press the Device soft key to select GP-IB.
Note
Only the communications interfaces selected under Device are available. If commands are
sent using an unselected communications interface, the command will not be received.
Setting the Address
4. Press the Address soft key.
5. Turn the jog shuttle to set the desired address.
Explanation
When you make settings which can be made using the front panel keys of the instrument
or when you output setup data or waveform data using the controller, the following
settings must be made.
Setting the Address
This function allows you to set the instrument’s address for addressable mode within the
range of 0 to 30. Each item of equipment connected via a GP-IB interface has its own
address, by which it can be identified. Care must be taken to ensure that all
interconnected devices are assigned unique addresses.
Note
Do not change the address while the GP-IB interface is being used by the controller.
1.5 Setting up this Instrument (GP-IB)

1-6 IM 701730-17E
1.6 Response to Interface Messages
1.6 Response to Interface Messages
Response to Interface Message
Response to a Uni-line Message
IFC (InterFace Clear)
Clears the talker and listener. Stops output if data is being output.
REN (Remote ENable)
Switches between remote and local modes.
IDY (Identify) is not supported.
Response to a Multi-Line Message (Address Command)
GTL (Go To Local)
Switches to local mode.
SDC (Selected Device Clear)
Clears the program message (command) which is currently being output. Also clears
the output queue (page 6-5).
*OPC and *OPC? will be disabled if they are currently being executed.
*WAI and :COMMunicate:WAIT will be stopped immediately.
PPC (Parallel Poll Configure), GET (Group Execute Trigger) and TCT (Take Control)
are not supported.
Response to a Multi-Line Message (Universal Command)
LLO (Local LockOut)
Invalidates SHIFT+CLEAR on the front panel to disable switching to local mode.
DCL (Device CLear)
Same as SDC.
SPE (Serial Poll Enable)
Sets the talker function to serial poll mode for all equipment connected to the
communications bus. The controller performs polling on equipment sequentially.
SPD (Serial Poll Disable)
Clears serial poll mode as the talker function for all equipment connected to the
communications bus.
PPU (Parallel Poll Unconfigure) is not supported.
What is an Interface Message?
An interface message is also called an interface command or bus command, and is
issued by the controller. Interface messages are classified as follows.
Uni-Line Messages
Messages are transferred through a single control line. The following three types of uni-
line message are available.
IFC (InterFace Clear)
REN (Remote ENable)
IDY (IDentifY)

1-7
IM 701730-17E
Overview of the GP-IB Interface
1
Multi-Line Message
Eight data lines are used to transmit a message. Multi-line messages are classified as
follows.
Address Commands
Valid when the equipment is designated as a listener or a talker. The following five
address commands are available.
•Commands valid for equipment designated as a listener;
GTL (Go To Local)
SDC (Selected Device Clear)
PPC (Parallel Poll Configure)
GET (Group Execute Trigger)
•Command valid for equipment designated as a talker;
TCT (Take ConTrol)
Universal Commands
Valid for any item of equipment, irrespective of whether the item is designated as a
listener or a talker. The following five universal commands are available.
LLO (Local LockOut)
DCL (Device CLear)
PPU(Parallel Poll Unconfigure)
SPE (Serial Poll Enable)
SPD (Serial Poll Disable)
In addition to the above commands, a listener address, talker address on secondary
command can be sent in an interface message.
Interface Messages
Uni-Line
Messages Address
Command Universal Command
◆IFC
◆REN
IDY ◆GTL
◆SDC
PPC
GET
TCT
◆LLO
◆DCL
PPU
◆SPE
◆SPD
Listerner
Address Talker Address Secondary Command
Multi-Line Messages
Messages marked with a “◆” are interface messages supported by the DL1720E/
DL1740E/DL1740EL.
Note
Differences between SDC and DCL
The SDC command is an address command and requires that both the talker and listener be
designated; however DCL is a universal command and does not require that the talker and
listener be designated. Therefore, SDC is used for particular items of equipment, while DCL
can be used for any equipment connected to the communications bus.
1.6 Response to Interface Messages

2-1
IM 701730-17E
USB Interface
2
2.1 Names of the Parts and their Functions
Chapter 2 USB Interface
2.1 Names of the Parts and their Functions
Front Panel
HELP
ESC
SELECTRESET
SIMPLE
ACTION DELAY
MODE POSITION
MATHMISCFILE
CLEAR
TRACE
HISTORY
MEASURE
SETUP
PRESET
DISPLAY
CURSOR
X -Y
CH 1
CH 2
CH 3
CH 4
V DIV
POWER
TIME DIV
MENU
COPY IMAGE SAVE
MENU PHASE
SHIFT
ZOOM
SEARCH
HORIZONTAL
VERTICAL
GO/NOGO
COMP
ENHANCED
ACQ STA RT/ ST OP
TRIGGER
TRIG D
SNAP
SHOT
1GS/s 500MHz
DIGITAL OSCILLOSCOPE
CH1 CH2 CH3 CH4
POWER
CH1 CH2
EXT.
1M /20pF 400Vpk CAT 50 5Vrms,10Vpk
<
_<
_
1M /20pF 400Vpk CAT 50 5Vrms,10Vpk
<
_<
_1M /20pF 40Vpk
<
_
MISC Key (Page 2-5)
Press to enter the communication settings
such as the ID value.
SHIFT Key+CLEAR TRACE Key
Press to switch from remote mode to local
mode which allows key operation.
However, this is not possible if Local Lockout
has been set by the controller (refer to page 2-2).
• DL1740E/DL1740EL
• DL1720E
Rear Panel
GO/
NO-GO
TRIG OUT
(TTL )
PROBE POWER ( 12V DC )
A
B
USB
USB
LINK
ETHERNET
GP - IB ( IEEE488 )
100BASE-TX
VIDEO OUT (VGA)
ACT
PERIPHERAL
ISM 1-A N200
MAIN POWER
100-120V
/220-240V AC
250VA MAX
50/60Hz
FUSE
250V T 4A
OFF ON
EXT CLOCK IN
EXT TRIG IN
TRIG GATE IN
40Vpk 1M
GO/
NO-GO
TRIG OUT
(TTL )
PROBE POWER ( 12V DC )
A
B
C
D
<
_
• DL1720E
• DL1740E/DL1740EL
USB Interface Connector
This connector is for connecting the
controller (such as a PC) with the USB
cable. For information on how to connect
the USB cable, refer to page 2-4.

2-2 IM 701730-17E
2.2 USB Interface Functions and Specifications
2.2 USB Interface Functions and Specifications
Reception Function
You can specify the same settings as those specified by front panel key operations.
Receives output requests for measured and computed data, setting parameters of the
panel, and error codes.
Transmission Function
Outputs measured and computed data.
Outputs setting parameters of the panel and the status byte.
Outputs error codes that are generated.
USB Interface Specifications
Electrical and Mechanical Specifications: Conforms to USB Rev.1.0
Connector: Type B connector (receptacle)
Number of Ports: 1
Power Supply: Self-powered
Supported Systems: PC system supported. Models with a
standard USB port that operates on Windows
98 SE, Windows Me, Windows 2000, or
Windows XP (a separate device driver is
required for connection to the PC).
Data Transfer Rate
The table below shows approximate response times for output of waveform data,
assuming the following configuration.
Model: 701730
Controller: PC(Pentium4 1.3GHz, USB1.1), OS(Windows2000
Professional)
GB-IB Board: NI AT-GPIB/TNT(PNP)
Programming Language: Visual C++
Data Volume Byte Format Word Format ASCII Format
1000 approx. 39.9 ms approx. 40.0 ms approx. 240.0 ms
10000 approx. 50.4 ms approx. 82.7 ms approx. 2.0 s
100000 approx. 250.8 ms approx. 403.2 ms approx. 20.0 s
1000000 approx. 2166.1 ms approx. 3475.1 ms approx. 204.6 s
Switching between Remote and Local Mode
When Switching from Local to Remote Mode
If the DL1720E/DL1740E/DL1740EL receives a ":COMMunicate:REMote ON"
command from the PC when it is in the local mode, it switches to the remote mode.
•REMOTE is displayed at the lower left corner of the screen.
•All keys except SHIFT+CLEAR TRACE are disabled.
•The settings that existed in the local mode are maintained even when the instrument
switches to the remote mode.

2-3
IM 701730-17E
USB Interface
2
When Switching from Remote to Local Mode
Pressing SHIFT+CLEAR TRACE when the instrument is in the remote mode causes the
instrument to switch to the local mode. However, this is void when the DL1720E/
DL1740E/DL1740EL has received a ":COMMunicate:LOCKout ON" command from
the PC (local lockout condition). When the DL1720E/DL1740E/DL1740EL receives a
":COMMunicate:REMote OFF" command from the PC, the DL1720E/DL1740E/
DL1740EL switches to the local mode regardless of the local lock condition.
•REMOTE indication at the lower right corner disappears.
•Key operations are enabled.
•The settings that existed in the remote mode are maintained even when the
instrument switches to the local mode.
Note
The USB interface cannot be used simultaneously with other communications interface (GP-
IB, or Ethernet).
2.2 USB Interface Functions and Specifications

2-4 IM 701730-17E
2.3 Connection via the USB Interface
Connector and Signal Names
1
2
4
3
Pin No. Signal Name
1VBUS: +5 V
2D–: –Data
3D+: +Data
4GND: Ground
Connection Precautions
•Connect the USB cable by inserting the connector firmly into the USB connector.
•When connecting multiple devices using USB hubs, connect the instrument to the
USB hub that is closest to the controller.
•Do not mistakenly insert the USB cable to the GO/NO-GO output terminal. This may
cause damage to the instrument.
•Do not connect/disconnect the USB cable to/from the instrument during the period
between the time power is turned ON and operation becomes possible (approximately
20 to 30 seconds). This may cause damage to theinstrument.
2.3 Connection via the USB Interface

2-5
IM 701730-17E
USB Interface
2
2.4 Setting up this Instrument (USB)
2.4 Setting up this Instrument (USB)
Procedure
Selecting the Communication Interface
1. Press MISC. The MISC menu appears.
2. Press the Remote Control soft key. The Remote Cntl menu appears.
3. Press the Device soft key to select USB.
Note
Only the communications interfaces selected under Device are available. If commands are
sent using an unselected communications interface, the command will not be received.
Setting the ID Value
4. Press the Own ID soft key.
5. Turn the jog shuttle to set the ID value.
Explanation
Carry out the following settings when using a controller to set information that can be
specified through key operation on the instrument or when outputting setting parameters
or output waveform data to the controller.
Setting the ID Value
Set the ID value of the instrument within the following range:
1 to 127
You can connect multiple devices to a host controller on the USB. If the instrument is
connected to multiple devices in a single USB system, the ID value is used by the host
controller to identify each device. Therefore, unique ID values must be assigned to the
instrument within a single system.
Note
Do not change the ID value while using the USB.