Teledyne LeCroy T3DSO1202A User manual

Programming Guide

T3DSO1000(A) and T3DSO2000
Digital Oscilloscopes Programming
Guide

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Digital Oscilloscope Series

Version Declaration

This chapter indicates the modifications of commands in the most recent
release of the programming guide version.

Introduction

Manual version 1.3 describes all the currently available commands. Some
of the commands vary between the oscilloscope series, and these will be
annotated in the description of command.

The following are the main revisions:
Delete the Table of Commands & Queries, and all the instructions are

classified according to the functional modules.

Removed incorrect instructions, added instructions for GEN and DIGITAL

modules.

Add two new communication features: Telnet and Socket, visible in

“Programming Overview-Remote Control”.

Detailed programming instances for instructions (WF?/SCDP) to make

it easier to understand.

Support obtaining waveform data of Digital channel and Math.

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Content

Programming Overview ...................................................................................... 6

Establishing Communications ......................................................................... 6

Install NI-VISA ............................................................................................ 6

Connect the Instrument .............................................................................. 10

Remote Control ............................................................................................. 11

User-defined Programming ........................................................................ 11

Send SCPI Commands via NI-MAX ........................................................ 11

Using SCPI with Telnet ............................................................................ 11

Using SCPI with Sockets............................................................................ 13

Introduction to the SCPI Language ................................................................... 14

About Commands & Queries......................................................................... 14

Description .................................................................................................... 14

Usage........................................... ................................................................. 14

Command Notation ........................................................................................ 15

Commands & Queries ....................................................................................... 16

COMMON (*) Commands ........................................................................... 17

COMM_HEADER Commands .................................................................... 21

ACQUIRE Commands .................................................................................. 23

AUTOSET Commands ................................................................................. 37

CHANNEL Commands ................................................................................ 39

CURSOR Commands .................................................................................... 49

DIGITAL Commands .................................................................................... 57

DISPLAY Commands ................................................................................... 67

HISTORY Commands ................................................................................... 73

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MATH Commands . . . ... . . . ... . . . ... . . . ... . . . ... . . . ... . . .. ... . . .. ... . . . ... . . .. ..78

MEASURE Commands ..................................................................................95

PASS/FAIL Commands ................................................................................109

PRINT Commands .......................................................................................120

RECALL Commands ...................................................................................122

REFERENCE Commands.............................................................................126

SAVE Commands ........................................................................................135

STATUS Commands ....................................................................................142

SYSTEM Commands................................................................................... 145

TIMEBASE Commands................................................................................150

TRIGGER Commands ................................................................................ 158

WAVEFORM Commands .......................................................................... 175

WGEN Commands........................................................................................189

Programming Examples .................................................................................. 196

VISA Examples ............................................................................................197

VC++ Example ......................................................................................... 197

VB Example............................................................................................. 204

MATLAB Example ...................................................................................210

LabVIEW Example ..................................................................................212

C# Example .............................................................................................. 215

Examples of Using Sockets ......................................................................... 218

Python Example .......................................................................................219

C Example.................................................................................................221

Common Command Examples.....................................................................223

Read waveform data (WF) Example ........................................................223

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Screen Dump (SCDP) Example............................................................... 225

Index................................................................................................................. 226

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Digital Oscilloscope Series

Programming Overview

This chapter introduces how to build communication between the instrument and
the PC. It also introduces how to configure a system for remote instrument control.
By using USB and LAN interfaces, in combination with NI-VISA and
programming languages, users can remotely control the instruments. Through LAN
interface, VXI-11, Sockets and Telnet protocols can be used to communicate with
the instruments.

Establishing Communications

Install NI-VISA

Before programming, you need to install the National Instruments NI-VISA
library, which you can download from the National Instruments web site.
Currently, NI-VISA is packaged in two versions: a full version and a Run-Time
Engine version. The full version includes the NI device drivers and a tool named
NI MAX which is a user interface to control and test remotely connected
devices. The Run-Time Engine is recommended, as it is a much smaller
download than the full version and includes the necessary tools for basic
communication to instruments.

For example, you can get the NI-VISA 5.4 full version from:
http://www.ni.com/download/ni-visa-5.4/4230/en/.

You also can download NI-VISA Run-Time Engine 5.4 to your PC and install it
as the default selection. Its installation process is similar with the full version.

After you downloaded the file, follow these steps to install NI-VISA (The full
version of NI-VISA 5.4 is used in this example. Newer versions are likely, and
should be compatible with Teledyne Test Tools instrumentation. Download the
latest version available for the operating system being used by the controlling
computer):

a. Double click the visa540_full.exe, dialog shown as below:

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b. Click Unzip, the installation process will automatically launch after unzipping

files. If your computer needs to install .NET Framework 4, it may auto start.

c. The NI-VISA installing dialog is shown above. Click Next to start the

installation process.

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d. Set the install path, default path is “C:\Program Files\National Instruments\”,

you can change it. Click Next, dialog shown as above.

e. Click Next twice, in the License Agreement dialog, select the “I accept the

above 2 License Agreement(s).”,and click Next, dialog shown as below:

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f. Click Next to begin installation.

Digital Oscilloscope Series

g. Now the installation is complete. Reboot your PC.

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Connect the Instrument

Depending on the specific model, your oscilloscope may be able to communicate
with a PC through the USB or LAN interface.

Connect the instrument and the USB Host interface of the PC using a USB cable.
Assuming your PC is already turned on, turn on your oscilloscope, and then the
PC will display the “Device Setup” screen as it automatically installs the device
driver as shown below.

Wait for the installation to complete and then proceed to the next step.

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Digital Oscilloscope Series

Remote Control

User-dened Programming

Users can use SCPI commands via a computer to program and control the digital
oscilloscope. For details, refer to the introductions in "Programming Examples".

Send SCPI Commands via NI-MAX

NI-Measurement and Automation eXplorer (NI-MAX) is a program created and
maintained by National Instruments. It provides a basic remote control interface
for VXI, LAN, USB, GPIB, and Serial communications. It is a utility that enables
you to send commandsone-at-a-time and also retrieve data from connected devices.
It is a great tool for troubleshooting and testing command sequences. The
oscilloscopes can be controlled remotely by sending SCPI commands via NI-MAX.

Using SCPI with Telnet

Telnet provides a means of communicating with the oscilloscopes over a LAN
connection. The Telnet protocol sends SCPI commands to the oscilloscopes from
a PC and is similar to communicating with the oscilloscopes over USB. It sends
and receivesinformation interactively: one command at a time. Windows operating
systems use a command prompt style interface for the Telnet client. The steps are
as follows:

1. On your PC, click Start > All Programs > Accessories > Command Prompt.

2. At the command prompt, type in telnet.

3. Press the Enter key. The Telnet display screen will be displayed.

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4. At the Telnet command line, type:

open XXX.XXX.XXX.XXX 5024

Where XXX.XXX.XXX.XXX is the instrument‘s IP address and 5024 is the port.
You should see a response similar to the following:

5. At the SCPI> prompt, input the SCPI commands such as *IDN? to return the
company name, model number, serial number, and firmware version number.

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6. To exit the SCPI> session, press the Ctrl+] keys simultaneously.

7. Type quit at the prompt or close the Telnet window to close the
connection to the instrument and exit Telnet.

Using SCPI with Sockets

Socket API can be used to control the T3DSO series via LAN without
installing any other libraries. This can reduce the complexity of
programming.

SOCKET ADDRESS IP address + port number
IP ADDRESS T3DSO IP address
PORT NUMBER 5024

Please see section "Examples of Using Sockets" for the details.

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Digital Oscilloscope Series

Introduction to the SCPI Language

About Commands & Queries

This section lists and describes the remote control commands and queries
recognized by the instrument. All commands and queries can be executed
in either local or remote state.

The description for each command or query, with syntax and other
information, begins on a new page. The name (header) is given in both
long and short form at the top of the page, and the subject is indicated as
a command or query or both.

The commands are given in long format for the “COMMAND SYNTAX“
and “QUERY SYNTAX“ sections and they are used in a short form for the
“EXAMPLE” .

Queries perform actions such as obtaining information, and are recognized
by the question mark (?) following the header.

Description

In the description, a brief explanation of the function performed is given.
This is followed by a presentation of the formal syntax, with the header
given in upper case characters and the short form derived from it. Where
applicable, the syntax of the query is given with the format of its response.

Usage

The commands and queries listed here can be used for the
T3DSO1000(A) and T3DSO2000 Digital Oscilloscope Series.

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Command Notation

The following notations are used in the commands:
< > Angular brackets enclose words that are used as placeholders, of which there

are two types: the header path and the data parameter of a command.

:= A colon followed by an equals sign separates a placeholder from the

description of the type and range of values that may be used in a

command instead of the placeholder.
{ } Braces enclose a list of choices, one of which one must be made.
[ ] Square brackets enclose optional items.
… An ellipsis indicates that the items both to its left and right may be repeated

for a number of times.

As an example, consider the syntax notation for the command to set the vertical
input sensitivity:
<channel>:VOLT_DIV <v_gain>
<channel>:={C1,C2,C3,C4}
<v_gain>:= 2 mV to 10 V

The first line shows the formal appearance of the command, with <channel>
denoting the placeholder for the header path and <v_gain> the placeholder for
the data parameter specifying the desired vertical gain value. The second line
indicates that one of four channels must be chosen for the header path. And the
third explains that the actual vertical gain can be set to any value between 2mV
and 10V.

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Digital Oscilloscope Series

Commands & Queries

This chapter introduces each command subsystem of the Teledyne Test Tools
Digital Oscilloscope Series command set. The contents of this chapter are shown
as below:

COMMON (*) Commands
COMM_HEADER Commands
ACQUIRE Commands
AUTOSET Commands
CHANNEL Commands
CURSOR Commands
DIGITAL Commands
DISPLAY Commands
HISTORY Commands
MATH Commands
MEASURE Commands
PASS/FAIL Commands
PRINT Commands
RECALL Commands
REFERENCE Commands
SAVE Commands
STATUS Commands
SYSTEM Commands
TIMEBASE Commands
TRIGGER Commands
WAVEFORM Commands
WGEN Commands
Obsolete Commands for Old Models

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COMMON (*) Commands

The IEEE 488.2 standard defines some general commands for querying the basic
information of an instrument or performing common basic operations. These
commands usually start with *, and the command key length is 3 characters.

*IDN? (Identication Number)
*OPC (Operation Complete)
*RST (Reset)

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COMMON (*)

DESCRIPTION

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

*IDN?

Query

The *IDN? query identifies the instrument type
and software version. The response consists of
four different fields providing information on the
manufacturer, the scope model, the serial
number and the firmware revision.

*IDN?

Teledyne Test Tools,<model>,<serial
number>,<firmware>
<model>:= the model number of the instrument.
<serial number>:= A 14-digit decimal code.
<firmware>:= the software revision of the
instrument

The query identifies the instrument type and
software version.
Command message:

*IDN?

Response message:

Teledyne Test Tools, T3DSO1204
,NDS1EBAC0L0098,7.6.1.15

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COMMON (*)

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

*OPC

Command/Query

The *OPC command sets the operation complete
bit in the Standard Event Status Register when
all pending device operations have finished.

The *OPC? query places an ASCII "1" in the
output queue when all pending device operations
have completed. The interface hangs until this
query returns.

*OPC

*OPC?

*OPC 1

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COMMON (*)

DESCRIPTION

COMMAND SYNTAX

EXAMPLE

*RST

C o m m an d

The *RST command initiates a device reset.
This is the same as pressing [Default] on
the front panel.

*RST

This example resets the oscilloscope.
Command message:

*RST

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COMM_HEADER Commands

CHDR

Digital Oscilloscope Series

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COMM_HEADER

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

COMM_HEADER | CHDR

Command/ Query

The COMM_HEADER command controls the
way the oscilloscope formats response to
queries. This command does not affect the
interpretation of messages sent to the
oscilloscope. Headers can be sent in their long or
short form regardless of the CHDR setting.

Examples of the three response formats to
“C1:VDIV?”:

CHDR RESPONSE

LONG C1:VOLT_DIV 1.00E+01V
SHORT C1:VDIV 1.00E+01V

OFF 1.00E+01
COMM_HEADER <mode>
<mode>:={SHORT,LONG,OFF}

• SHORT — response starts with the short form
of the header word.

• LONG — response starts with the long form
of the header word.

• OFF — header is omitted from the response
and units in numbers are suppressed.

Note:

Default is the SHORT response format.

COMM_HEADER?

COMM_HEADER <mode>

The following command sets the response
header format to SHORT.
Command message:

CHDR SHORT

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ACQUIRE Commands

The ACQUIRE subsystem controls the way in which waveforms are acquired.
These commands set the parameters for acquiring and storing data.

ARM
STOP
ACQW
AVGA
MSIZ
SAST?
SARA?
SANU?
SXSA
XYDS

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ACQUIRE

DESCRIPTION

COMMAND SYNTAX

EXAMPLE

ARM_ACQUISITION | ARM

Command

The ARM_ACQUISITION command starts a
new signal acquisition.

ARM_ACQUISITION

The following steps show the effect of ARM.

Note:

INR bit 13 (8192) = Trigger is ready.
INR bit 0 (1) = New Signal Acquired.

Step 1: Set the trigger mode to single, and input
a signal which can be triggered. Once triggered,
you can see the state of acquisition changes to
stop. Send the query.

Query message:

INR?

Response message:

INR 8193(trigger ready)

Step 2: Send the query again to clear the
register.

Query message:

INR?

Response message:

INR 0

Step 3; Now, send the command to start a new
signal acquisition.

Command message:

ARM

Step 4: Send the query to see the effect of ARM.

Query message:

INR?

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Response message:

INR 8193

RELATED COMMANDS

STOP
TRMD
INR?

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ACQUIRE

DESCRIPTION

COMMAND SYNTAX

EXAMPLE

RELATED COMMANDS

STOP

Command

The STOP command stops the acquisition.
This is the same as pressing the Stop key on
the front panel.

STOP

The following command stops the
acquisition process.
Command message:

STOP

ARM
TRMD

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ACQUIRE

DESCRIPTION

COMMAND SYNTAX

ACQUIRE_WAY | ACQW

Command /Query

The ACQUIRE_WAY command specifies the
acquisition mode.

The ACQUIRE_WAY? query returns the current
acquisition mode.

ACQUIRE_WAY <mode>[,<time>]

<mode>:={SAMPLING,PEAK_DETECT,AVE
RAGE,HIGH_RES}

<time>:={4,16,32,64,128,256,512,…}

• SAMPLING — sets the oscilloscope in the
normal mode.

• PEAK_DETECT — sets the oscilloscope in
the peak detect mode.

• AVERAGE — sets the oscilloscope in the
averaging mode.

• HIGH_RES — sets the oscilloscope in the
enhanced resolution mode (also known as
smoothing). This is essentially a digital boxcar
filter and is used to reduce noise at slower
sweep speeds.

Note:

• The [HIGH_RES] option is valid for T3DSO
models. See models on page 14.

• <time>:={4,16,32,64,128,256,512,…} when
<mode> = AVERAGE.

Options vary from models. See the data sheet or
the acquire menu of the oscilloscope.

QUERY SYNTAX

RESPONSE FORMAT

ACQUIRE_WAY?

ACQUIRE_WAY <mode>[,<time>]

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EXAMPLE

RELATED COMMANDS

The following command sets the acquisition
mode to average mode and also sets the average
time to 16.
Command message:

ACQW AVERAGE,16

AVGA

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ACQUIRE

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

RELATED COMMANDS

AVERAGE_ACQUIRE | AVGA

Command /Query

The AVERAGE_ACQUIRE command selects
the average times of average acquisition.

The AVERAGE_ACQUIRE? query returns the
currently selected count value for average mode.

AVERAGE_ACQUIRE <time>

<time>:= {4,16,32,64,128,256,…}

Note:

Options of <time> vary from models. See the
data sheet or the acquire menu of the
oscilloscope for details.

AVERAGE_ACQUIRE?

AVERAGE_ACQUIRE <time>

The following command turns the average times

of average acquisition to 16.
Command message:

AVGA 16

ACQW

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ACQUIRE

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

MEMORY_SIZE | MSIZ

Command /Query

The MEMORY_SIZE command sets the
maximum depth of memory.

The MEMORY_SIZE? query returns the
maximum depth of memory.

MEMORY_SIZE <size>

<size>:={7K,70K,700K,7M} for non-interleaved
mode. Non-interleaved means a single channel is
active per A/D converter. Most oscilloscopes
feature two channels per A/D converter. .

<size>:={14K,140K,1.4M,14M} for interleave
mode. Interleave mode means multiple active
channels per A/D converter.

Note:

Options of <size> vary from models. See the
data sheet or the acquire menu of the
oscilloscope for details.

MEMORY_SIZE?

MEMORY_SIZE <size>

The following command sets the maximum
depth of memory to 14M in interleave mode.
Command message:

MSIZ 14M

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ACQUIRE

DESCRIPTION

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

SAMPLE_STATUS? | SAST?

Query

The SAST? query returns the acquisition
status of the scope.

SAST?

SAST <status>

The following query returns the acquisition
status of the scope.
Query message:

SAST?

Response message:

SAST Trig'd

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ACQUIRE

DESCRIPTION

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

SAMPLE_RATE? | SARA?

Query

The SARA? query returns the sample rate
of the scope.

SARA?
DI:SARA?

• DI — digital.

SARA <value>
DI:SARA <value>

Model Format of <value>

T3DSO1000(A)

T3DSO2000 Numerical value

• The following query returns the sample rate
of the analog channel.
Query message:

SARA?

Response message:

SARA 5.00E+05Sa/s

Numerical value
in E-notation with
SI unit, such as

5.00E+08Sa/s.

with measurement
unit and physical
unit, such as

1.00GSa/s.

• The following query returns the sample rate
of the digital channel.
Query message:

DI:SARA?

Response message:

DI:SARA 5.00E+05Sa/s

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Note:

The table shows the availability of “DI:SARA?” in each digital oscilloscope series.

Model Valid?

T3DSO2000 yes

T3DSO1000(A) yes

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ACQUIRE

DESCRIPTION

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

SAMPLE_NUM? | SANU?

Query

The SANU?query returns the number of data
points that the hardware will acquire from the
input signal. The number of points acquired
is based on the horizontal scale and
memory/acquisition depth selections and
cannot be directly set.

SANU? <channel>

<channel>:={C1,C2,C3,C4}

SANU <value>

Model Format of <value>

T3DSO1000(A)

T3DSO2000

The following query returns the number of
sampled points available from last
acquisition from Channel 2.
Query message:

SANU? C2

Numerical value
in E-notation with
SI unit, such as

7.00E+05pts.
Numerical value

with measurement
unit and physical
unit, such as 28Mpts.

Response message:

SANU 7.00E+05pts

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ACQUIRE

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

SINXX_SAMPLE | SXSA

Command/Query

The SINXX_SAMPLE command sets the
way of interpolation.

The SINXX_SAMPLE? query returns the
way of interpolation.

SINXX_SAMPLE <state>

<state>:={ON,OFF}

• ON — sine interpolation.

• OFF — linear interpolation.

SINXX_SAMPLE?

SINXX_SAMPLE <state>

The following command sets the way of the
interpolation to sine interpolation. Command
message:

SXSA ON

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ACQUIRE

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

XY_DISPLAY | XYDS

Command /Query

The XY_DISPLAY command enables or
disables the display of XY mode. XY mode
plots the voltage data of both channels with
respect to one-another. For example, channel
1 vs. channel 2. This can be used to create
Lissajous curves. The standard display mode
plots voltage data vs. time.

The XY_DISPLAY? query returns whether
the XY format display is enabled.

XY_DISPLAY <state>

<state>:={ON,OFF}

X Y _ D I S P L A Y ?

XY_DISPLAY <state>

The following command enables the XY
format.
Command message:

XYDS ON

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Digital Oscilloscope Series

AUTOSET Commands

The AUTOSET subsystem commands control the function of automatic waveform
setting. The oscilloscope will automatically adjust the vertical position, the
horizontal time base and the trigger mode according to the input signal to make
the waveform display to the best state.

ASET

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AUTOSET

Command

DESCRIPTION

COMMAND SYNTAX

EXAMPLE

AUTO_SETUP | ASET

The AUTO_SETUP command attempts to
identify the waveform type and automatically
adjusts controls to produce a usable display of
the input signal.

AUTO_SETUP

The following command instructs the
oscilloscope to perform an auto-setup.
Command message:

ASET

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Digital Oscilloscope Series

CHANNEL Commands

The CHANNEL subsystem commands control the analog channels. Channels are
independently programmable for offset, probe, coupling, bandwidth limit,
inversion, and more functions. The channel index (1, 2, 3, or 4) specified in the
command selects the analog channel that is affected by the command.

ATTN
BWL
CPL
OFST
SKEW
TRA
UNIT
VDIV
INVS

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CHANNEL

Command /Query

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

ATTENUATION | ATTN

The ATTENUATION command specifies the
probe attenuation factor for the selected channel.
The probe attenuation factor may be 0.1 to

10000.This command does not change the actual
input sensitivity of the oscilloscope. It changes
the reference constants for scaling the display
factors, for making automatic measurements,
and for setting trigger levels.

The ATTENUATION? query returns the current
probe attenuation factor for the selected channel.

<channel>:ATTENUATION <attenuation>

<channel>:={C1,C2,C3,C4}

<attenuation>:={0.1,0.2,0.5,1,2,5,10,20,50,100,2
00,500,1000,2000,5000,10000}

<channel>:ATTENUATION?

<channel>:ATTENUATION <attenuation>

The following command sets the attenuation
factor of Channel 1 to 100:1. To ensure the data
matches the true signal voltage values, the
physical probe attenuation must match the scope
attenuation values for that input channel.

Command message:

C1:ATTN 100

RELATED COMMANDS

VDIV
OFST

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Digital Oscilloscope Series

CHANNEL

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

BANDWIDTH_LIMIT | BWL

Command /Query

BANDWIDTH_LIMIT enables or disables the
bandwidth-limiting low-pass filter. If the
bandwidth filters are on, it will limit the
bandwidth to reduce display noise. When you
turn Bandwidth Limit ON, the Bandwidth Limit
value is set to 20 MHz. It also filters the signal to
reduce noise and other unwanted high frequency
components.

The BANDWIDTH_LIMIT? query returns
whether the bandwidth filters are on.

BANDWIDTH_LIMIT<channel>,<mode>
[,<channel>,<mode>[,<channel>,<mode>[,
<channel>,<mode>]]]

<channel>:={C1,C2,C3,C4}

<mode>:={ON,OFF}

BANDWIDTH_LIMIT?

BANDWIDTH_LIMIT <channel>,<mode>

[,<channel>,<mode>[,<channel>,<mode>[,
<channel>,<mode>]]]

• The following command turns on the

bandwidth filter for all channels.
Command message:

BWL C1,ON,C2,ON,C3,ON,C4,ON

• The following command turns the bandwidth
filter on for Channel 1 only.
Command message:

BWL C1,ON

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Digital Oscilloscope Series

CHANNEL

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

COUPLING | CPL

Command /Query

The COUPLING command selects the coupling
mode of the specified input channel.

The COUPLING? query returns the coupling
mode of the specified channel.

<channel>:COUPLING <coupling>

<channel>:={C1,C2,C3,C4}

<coupling>:={A1M,A50,D1M,D50,GND}

• A — alternating current.

• D — direct current.

• 1M — 1MΩ input impedance.

• 50 — 50Ω input impedance.

Note:

Options of <coupling> vary from models. See
the data sheet or the channel menu of
oscilloscope for details.

<channel>:COUPLING?

<channel>:COUPLING <coupling>

The following command sets the coupling of
Channel 2 to 50 Ω, DC.
Command message:

C2:CPL D50

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Digital Oscilloscope Series

CHANNEL

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

OFFSET | OFST

Command/Query

The OFFSET command allows adjustment of the
vertical offset of the specified input channel. The
maximum ranges depend on the fixed sensitivity
setting.

The OFFSET? query returns the offset value of the
specified channel.

<channel>:OFFSET <offset>

<channel>:={C1,C2,C3,C4}

<offset>:= vertical offset value with unit, see the
data sheet for details.

Note:

• If there is no unit (V/mV/uV) added, it defaults
to volts (V).

• If you set the offset to a value outside of thelegal
range, the offset value is automatically set to the
nearest legal value. Legal values are affected by
the probe attenuation setting.

<channel>:OFFSET?

<channel>:OFFSET <offset>
<offset>:= Numerical value in E-notation with
SI unit.

• The following command sets the offset of
Channel 2 to -3 V.
Command message:

C2:OFST -3V

• The following command sets the offset of
Channel 1 to -50 mV.
Command message:

C1:OFST -50mV

RELATED COMMANDS

VDIV
ATTN

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Digital Oscilloscope Series

CHANNEL

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

SKEW

Command/Query

The SKEW command sets the channel-to­channel skew factor for the specified
channel. Each analog channel can be
adjusted + or -100 ns for a total of 200 ns
difference between channels. You can use
the oscilloscope's skew control to remove
cable-delay errors between channels.

The SKEW? query returns the skew value
of the specified trace.

<trace>:SKEW <skew>

<trace>:={C1,C2,C3,C4}

<skew>:= -100 ns to +100 ns.

<trace>:SKEW?

<trace>:SKEW <skew>

Model Format of <skew>

T3DSO1000(A)

T3DSO2000 Numerical value

Numerical value
in E-notation with
SI unit, such as

9.99E-08S.

with measurement
unit and physical
unit, such as 0.00ns.

EXAMPLE

The following command sets skew value of
Channel 1 to 3ns.

Command message:

C1:SKEW 3NS

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Digital Oscilloscope Series

CHANNEL

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

TRACE | TRA

Command/Query

The TRACE command turns the display of the
specified channel on or off.

The TRACE? query returns the current display
setting for the specified channel.

<trace>:TRACE <mode>

<trace>:={C1,C2,C3,C4}

<mode>:={ON,OFF}

<trace>:TRACE?

<trace>:TRACE <mode>

The following command displays Channel 1.

Command message:

C1:TRA ON

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Digital Oscilloscope Series

CHANNEL

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

UNIT

Command /Query

The UNIT command sets the unit of the
specified trace. Measurement results, channel
sensitivity, and trigger level will reflect the
measurement units you select.

The UNIT? query returns the unit of the
specified trace.

<channel>:UNIT <type>

<channel>:={C1,C2,C3,C4}

<type>:={V,A}

<channel>:UNIT?

<channel>:UNIT <type>

The following command sets the unit of
Channel 1 to V.

Command message:

C1:UNIT V

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Digital Oscilloscope Series

CHANNEL

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

VOLT_DIV | VDIV

Command /Query

The VOLT_DIV command sets the vertical
sensitivity in Volts/div.

If the probe attenuation is changed, the scale
value is multiplied by the probe's attenuation
factor.

The VOLT_DIV? query returns the vertical
sensitivity of the specified channel.

<channel>:VOLT_DIV <v_gain>

<channel>:={C1,C2,C3,C4}

<v_gain>:= 500uV to 10V.

Note:

If there is no unit (V/mV/uV) added, it
defaults to volts (V).

<channel>:VOLT_DIV?

<channel>:VOLT_DIV <v_gain>
<v_gain>:= Numerical value in E-notation with

SI unit.

The following command sets the vertical
sensitivity of Channel 1 to 50 mV/div.

Command message:

C1:VDIV 50mV

RELATED COMMANDS

ATTN

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Digital Oscilloscope Series

CHANNEL

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

INVERTSET | INVS

Command/Query

The INVERTSET command mathematically
inverts the specified traces or the math waveform.

The INVERTSET? query returns the current state
of the channel inversion.

<trace>:INVERTSET <state>

<trace>:={C1,C2,C3,C4,MATH}

<state>:= {ON,OFF}

<trace>:INVERTSET?

<trace>:INVERTSET <state>

The following command inverts the trace of
Channel 1.

Command message:

C1:INVS ON

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Digital Oscilloscope Series

CURSOR Commands

The CURSOR subsystem commands set and query the settings of X-axis
markers(X1 and X2 cursors) and the Y-axis markers (Y1 and Y2 cursors). You
can set and query the marker mode and source, the position of X and Y cursors,
and query delta X and delta Y cursor values.

CRMS
CRST
CRTY
CRVA?

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Digital Oscilloscope Series

CURSOR

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

CURSOR_MEASURE | CRMS

Command /Query

The CURSOR_MEASURE command specifies
the type of cursor or parameter measurement to
be displayed

The CURSOR_MEASURE? query returns
which cursors or parameter measurements are
currently displayed.

CURSOR_MEASURE <mode>

Format 1:
<mode>:={OFF,ON}

• OFF — manual mode.

• ON — track mode.

Format 2:
<mode>:={OFF,MANUAL,TRACK}

• OFF — close the cursors.

• MANUAL — manual mode.

• TRACK — track mode.

Note:

The table on next page shows the available
command format in each oscilloscope series.

CURSOR_MEASURE?

CURSOR_MEASURE <mode>

• The following command turns cursor function
o on the T3DSO1000(A).
Command message:

CRMS OFF

• The following command sets cursor mode to
track mode on the T3DSO1000(A).
Command message:

CRMS ON

RELATED COMMANDS

CRVA?
CRST

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Digital Oscilloscope Series

Format in Each Oscilloscope Series

Model Command Format

T3DSO2000 Format 1

T3DSO1000(A) Format 2

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Digital Oscilloscope Series

CURSOR

DESCRIPTION

COMMAND SYNTAX

CURSOR_SET | CRST

Command /Query

The CURSOR_SET command allows the user to
position any one of the four independent cursors
at a given screen location. The positions of the
cursors can be modified or queried even if the
required cursor is not currently displayed on the
screen. When setting a cursor position, a trace
must be specified, relative to which the cursor
will be positioned.

The CURSOR_SET? query returns the current
position of the cursor(s). The values returned
depend on the grid type selected.

<trace>:CURSOR_SET

<cursor>,<position>[,<cursor>,<position>[,<cur
sor> ,<position>[,<cursor>,<position>]]]

<trace>:={C1,C2,C3,C4}

<cursor>:={VREF,VDIF,TREF,TDIF,HRDF,H
DIF}

• VREF — The voltage-value of Y1 (curA)
under manual mode.

• VDIF — The voltage-value of Y2 (curB)
under manual mode.

• TREF — The time value of X1 (curA) under
manual mode.

• TDIF — The time value of X2 (curB) under
manual mode.

• HREF — The time value of X1 (curA) under
track mode.

• HDIF — The time value of X2 (curB) under
track mode.

<position>:= -( grid/2) *DIV to (grid/2)*DIV
when <cursor> = {TREF, TDIF, HRDF, HDIF}
(horizontal)

grid: The grid numbers in horizontal direction.
<position>:= -4*DIV to 4*DIV when <cursor> =
{ VREF,VDIF}.(vertical)

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Digital Oscilloscope Series

Note:

• The horizontal position range is related to the
size of screen.

• You need to add the unit to the position value.

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

RELATED COMMANDS

<trace>:CURSOR_SET?
<cursor>[,<cursor>[,<cursor>[,<cursor>]]]

<cursor>:={VREF,VDIF,TREF,TDIF,HREF,H
DIF}

<trace>:CURSOR_SET <cursor>,<position>[,
<cursor>,<position>[,<cursor>,<position>[,<cur
sor>,<position>]]]

• When the current time base is 1 us, vdiv is 500
mV, the cursor mode is manual, the following
command sets the X1 positions to -3 DIV, Y2
position to −1 DIV,using Channel 1 as a reference.
Command message:

C1:CRST TREF,-3us,VDIF,-500mV

• When the current time base is 1 us, the cursor
mode is track, the following command sets the X1
positions to -1 DIV, X2 position to 2 DIV, using
Channel 1 as a reference.
Command message:

C1:CRST HREF,-1us,HDIF,2us

CRMS
CRVA?

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Digital Oscilloscope Series

CURSOR

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

RELATED COMMANDS

CURSOR_TYPE | CRTY

Command /Query

The CURSOR_TYPE command specifies the
type of cursor to be displayed when the cursor
mode is manual.

The CURSOR_TYPE query returns the current
type of cursor.

CURSOR_TYPE <type>

<mode>:={X,Y,X-Y}

C U R S O R _ T Y P E ?

CURSOR_TYPE <type>

The following command sets cursor type to Y.

Command message:

CRTY Y

CRMS

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Digital Oscilloscope Series

CURSOR

DESCRIPTION

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

CURSOR_VALUE? | CRVA?

Query

The CURSOR_VALUE? query returns the
values measured by the specified cursors for a
given trace.

<trace>:CURSOR_VALUE? <mode>

<trace>:= {C1, C2, C3, C4}

<mode>:= {HREL,VREL}

• HREL — return the delta time value,
reciprocal of delta time value, X1 (curA) time
value and X2 (curB) time value.

• VREL — return the delta volt value, Y1
(curA) volt value and Y2 (curB) volt value under
manual mode.

Note:

For older models, VREL is the delta volt
value under manual mode. See models on page

14.

<trace>:CURSOR_VALUE

HREL,<delta>,<1/delta>,<value1>,<value2>

<trace>:CURSOR_VALUE
VREL,<delta>,<value1>,<value2>

When the cursor mode is manual, and the cursor

type is Y, the following query returns the
vertical value on channel 1.

Query message:

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Digital Oscilloscope Series

C1:CRVA? VREL

Response message:

C1:CRVA VREL,-5.00E+00V,2.50E+00V,-

2.50E+00V

RELATED COMMANDS

CRMS

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Digital Oscilloscope Series

DIGITAL Commands

The DIGITAL subsystem commands control the viewing of digital channels.
They also control threshold settings for groups of digital channels.

DGCH
DGST
DGTH
SW
TRA
TSM
CUS

Note:

These commands are only valid for models which have the MSO Option
installed.

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Digital Oscilloscope Series

DIGITAL

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

Note:

The table below shows the availability of command in each oscilloscope series.

Model Valid?

T3DSO2000 yes

T3DSO1000(A)

DIGITAL_CHANNEL | DGCH

The DIGITAL_CHANNEL command turns
digital display on or off for the specified
channel.

The DIGITAL_CHANNEL? query returns the
current digital display setting for the specified
channel.

<digital>:DIGITAL_STATE <state>

<digital>:={D0,D1,D2,D3,D4,D5,D6,D7,D8,D9,
D10,D11,D12,D13,D14,D15}

<state>:={OFF,ON}

<digital>:DIGITAL_STATE?

<digital>:DIGITAL_STATE <state>

The following command sets D8 display on.
Command message:

D8:DGCH ON

yes - except T3DSO1102

Command /Query

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Digital Oscilloscope Series

DIGITAL

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

Note:

The table below shows the availability of command in each oscilloscope series.

Model Valid?

T3DSO2000 yes

T3DSO1000(A)

The DIGITAL_STATE command is used to set
the state of digital.

The DIGITAL_STATE? query returns the state
of digital.

DIGITAL_STATE <state>

<state>:={OFF,ON}

DIGITAL_STATE?

DIGITAL_STATE <state>

The following command sets Digital function on.
Command message:

DGST ON

yes - except T3DSO1102

DIGITAL_STATE | DGST

Command /Query

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Digital Oscilloscope Series

DIGITAL

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

DIGITAL_THR | DGTH

Command /Query

The DIGITAL_THR command sets the
threshold for the specified group of channels.
The threshold is used for triggering purposes and
for displaying the digital data as high (above the
threshold) or low (below the threshold).

The DIGITAL_THR? query returns the
threshold value for the specified group of
channels.

<group>:DIGITAL_THR <type>[,<level>]

<group>:={C1,C2}

• C1 — D0-D7.

• C2 — D8-D15.

<type>:={TTL,CMOS,CMOS3.3,CMOS2.5,CU
STOM}

<level>:= -5V to 5V when <type> is CUSTOM.

Note:

• If there is no unit(V) added to <level>, it
defaults to be V.

• If you set the threshold to a value outside of
the legal range, the threshold is automatically
set to the nearest legal value.

<group>:DIGITAL_THR?

Format 1:
DIGITAL_THR <type>

Format 2:
DIGITAL_THR <group>:<level>

<type> Response Format

TTL/CMOS/CM
OS3.3/CMOS2.5

CUSTOM Format 2

Format 1

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Digital Oscilloscope Series

EXAMPLE

Note:

The table below shows the availability of command in each oscilloscope series.

Model Valid?

T3DSO2000 yes

T3DSO1000(A) yes - except T3DSO1102

• For T3DSO1000(A) series, when the Digital
function is on, the following command sets the
threshold of D0-D7 to LVLCMOS3.3.
Command message:

C1:DGTH CMOS3.3

• For T3DSO1000(A) series, when the Digital
function is on, the following command sets the
threshold of D8-D15 to 3 V.
Command message:

C2:DGTH CUSTOM,3V

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Digital Oscilloscope Series

DIGITAL

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

Note:

The table below shows the availability of command in each oscilloscope series.

Model Valid?

T3DSO2000 no

T3DSO1000(A)

The SWITCH command is used to set the state
of digital.

The SWITCH? query returns the state of digital.

<function>:SWITCH <state>

<function>:={DI}

<state>:={OFF,ON}

<function>:SWITCH?

<function>:SWITCH <state>

For T3DSO1000(A) series, the following command
sets Digital function on.
Command message:

DI:SWITCH ON

yes - except T3DSO1102

SWITCH | SW

Command /Query

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Digital Oscilloscope Series

DIGITAL

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

Note:

The table below shows the availability of command in each oscilloscope series.

Model Valid?

T3DSO2000 no

T3DSO1000(A)

The TRACE command turns digital display on
or off for the specified channel.

The TRACE? query returns the current digital
display setting for the specified channel.

<digital>:TRACE <state>

<digital>:={D0,D1,D2,D3,D4,D5,D6,D7,D8,D9,
D10,D11,D12,D13,D14,D15}

<state>:={OFF,ON}

<digital>:TRACE?

<digital>:TRACE <state>

For T3DSO1000(A) series, the following command

sets D8 display on.
Command message:

D8:TRACE ON

yes - except T3DSO1102

TRACE | TRA

Command /Query

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Digital Oscilloscope Series

DIGITAL

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

Note:

The table below shows the availability of command in each oscilloscope series.

Model Valid?

T3DSO2000 no

T3DSO1000(A)

THRESHOLD_MODE | TSM

The THRESHOLD_MODE command sets the
threshold type for the specified group of
channels. The threshold is used for triggering
purposes and for displaying the digital data as
high (above the threshold) or low (below the
threshold).

The THRESHOLD_MODE? query returns the
threshold type for the specified group of
channels.

<group>:THRESHOLD_MODE <type>

<group>:={H8,L8}

• H8 — D8-D15.

• L8 — D0-D7.

<type>:={TTL,CMOS,LVCMOS33,LVCMOS2
5,CUSTOM}

<group>:THRESHOLD_MODE?

<group>:THRESHOLD_MODE <type>

For T3DSO1000(A) series, when the Digital
function is on, the following command sets the
threshold of D0-D7 to LVLCMOS3.3.
Command message:

L8:TSM LVCMOS33

yes - except T3DSO1102

Command /Query

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Digital Oscilloscope Series

DIGITAL

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

CUSTOM | CUS

Command /Query

The CUSTOM command sets the threshold
value by customer for the specified group of
channels. The threshold is used for triggering
purposes and for displaying the digital data as
high (above the threshold) or low (below the
threshold).

The CUSTOM? query returns the threshold
value set by customer for the specified group of
channels.

<group>:CUSTOM <value>

<group>:={H8,L8}

• H8 — D8-D15.

• L8 — D0-D7.

<value>:= volt value with unit.

Note:

• You need to add the volt unit(V/mV) to the
value. If there is no unit added, it defaults to
volts (V).

• The range of value varies from models. See
the data sheet for details.

• An out-of-range value will be adjusted to the
closest legal value.

<group>:CUSTOM?

<group>:CUSTOM <value>

For T3DSO1000(A) series, when the Digital
function is on, the following command sets the
threshold value of D8-D15 to 5V.
Command message:

L8:CUSTOM 5V

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Digital Oscilloscope Series

Note:

The table below shows the availability of command in each oscilloscope series.

Model Valid?

T3DSO2000 no

T3DSO1000(A) yes - except T3DSO1102

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Digital Oscilloscope Series

DISPLAY Commands

The DISPLAY subsystem is used to control how waveforms, and the graticules
are displayed on the screen.

DTJN
GRDS
INTS
MENU
PESU

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Digital Oscilloscope Series

DISPLAY

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

DOT_JOIN | DTJN

Command /Query

The DOT_JOIN command sets the interpolation
lines between data points.
DOT_JOIN <state>

<state>:={ON,OFF}

• ON — dots. This mode displays data more
quickly than vector mode but does not draw lines
between sample points.

• OFF — vectors. This is the default mode and
draws lines between points.

DOT_JOIN?

DOT_JOIN <state>

The following command turns off the
interpolation lines.

Command message:

DTJN ON

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Digital Oscilloscope Series

DISPLAY

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

GRID_DISPLAY | GRDS

Command /Query

The GRID_DISPLAY command selects the type
of the grid which is used to display.

The GRID_DISPLAY? query returns the current
type of grid.

GRID_DISPLAY <type>

< type >:={FULL,HALF,OFF}

GRID_DISPLAY?

GRID_DISPLAY <type>

The following command changes the type of
grid to full grid.

Command message:

GRDS FULL

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Digital Oscilloscope Series

DISPLAY

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

INTENSITY | INTS

Command/Query

The INTENSITY command sets the intensity
level of the grid or the trace.

The INTENSITY? query returns the grid and
trace intensity levels.

INTENSITY GRID,<value>,TRACE,<value>

<value>:= 0(or 30) to 100

Note:

You can also set the intensity level of the grid or
trace using a key-value pair alone, see the
example for details.

INTENSITY?

INTENSITY TRACE,<value>,GRID,<value>

The following command changes the grid
intensity level to 75%.
Command message:

INTS GRID,75

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Digital Oscilloscope Series

DISPLAY

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

MENU

Command/Query

The MENU command enables or disables to
display the menu.

The MENU? query returns whether the menu is
displayed.

MENU <state>

<state>:={ON,OFF}

MENU?

MENU <state>

The following command enables the display of
the menu.
Command message:

MENU ON

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Digital Oscilloscope Series

DISPLAY

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

PERSIST_SETUP | PESU

Command /Query

The PERSIST_SETUP command selects the
persistence duration of the display, in seconds, in
persistence mode.

The PERSIST_SETUP? query returns the
current status of the persistence.

PERSIST_SETUP <time>

Models <time>:=

T3DSO1000(A) {OFF,INFINITE,1,5,10,30}

Others {INFINITE,1,5,10,30}

Note:

• See models on page 14.

• See the command PERS in Obsolete

Commands for Old Models to set persist o .

• Options of <time> vary from models. See the
data sheet or the display menu of the
oscilloscope for details.

PERSIST_SETUP?

PERSIST_SETUP <time>

The following command sets the variable
persistence at 5 seconds.
Command message:

PESU 5

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Digital Oscilloscope Series

HISTORY Commands

The HISTORY subsystem commands control the waveform recording function
and the history waveform play function.

FRAM
FTIM?
HSMD
HSLST

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Digital Oscilloscope Series

HISTORY

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

FRAME_SET | FRAM

Command/ Query

The FRAME_SET command is used to set
history current frame number.

The FRAME_SET? query returns the current
frame number.

FRAM <frame_num>

<frame_num>:= 0 to the max frame number.

Note:

You can send the query FRAM? to get the max
frame number when the history function is
turned on for the first time.

FRAM?

FRAM <frame_num>

Note:

The query is only valid for T3DSO1000(A) series.

When the history function is on, the following
command sets current frame number to 50. Then
you can see the response on the screen as shown
below.

Command message:

FRAM 50

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Digital Oscilloscope Series

HISTORY

DESCRIPTION

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

The FRAME_TIME query returns the acquire
timestamp of the current frame.

FTIM?

Format 1:
FTIM hour: minute: second. micro-second

Format 2:
\xFF\x0F\x03\x01&\xD5\x02\x00

Note:

• Format 2 is binary data and has no key word.

• The table below shows the available response

format in each oscilloscope series.

For the T3DSO1000(A) series, when the history

function is on, the following query returns the
acquire time of the current frame.
Query message:

FTIM?

Response message:

FTIM 00: 05: 12. 650814

Format in Each Oscilloscope Series

Model Response Format

T3DSO2000 Format 2

T3DSO1000(A) Format 1

FRAME_TIME? | FTIM?

Query

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Digital Oscilloscope Series

HISTORY

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

Note:

The table below shows the availability of command in each oscilloscope series.

Model Valid?

T3DSO2000 no

T3DSO1000(A) yes

The HISTORY_MODE command is used to set
the state of history mode.

The HISTORY_MODE? query returns the
current state of history mode.

HSMD <state>

<state>:={ON,OFF}

HSMD?

HSMD <state>

The following command sets the state of history
mode to ON.
Command message:

HSMD ON

HISTORY_MODE | HSMD

Command/ Query

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Digital Oscilloscope Series

HISTORY

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

RELATED COMMANDS

Note:

The table below shows the availability of command in each oscilloscope series.

Model Valid?

T3DSO2000 no

T3DSO1000(A) yes

The HISTORY_LIST command is used to set
the state of history list.

The HISTORY_LIST? query returns the current
state of history list.

HSLST <state>

<state>:={ON,OFF}

Note:

This command can only be used when History
function is turned on.

HSLST?

HSLST <state>

When History function is on, the following

command sets the state of history list to ON.
Command message:

HSLST ON

HSMD

HISTORY_LIST | HSLST

Command/ Query

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Digital Oscilloscope Series

MATH Commands

The MATH subsystem controls the math functions in the oscilloscope. As
selected by the DEF command, these math functions are available:
Operators: Add, Subtract, Multiply, Divide.
Operators perform their function on two analog channel sources.
Transforms: DIFF, Integrate, FFT, SQRT.

DEF
INVS
MTVD
MTVP
FFTC
FFTF
FFTP
FFTS
FFTT?
FFTU
FFTW

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Digital Oscilloscope Series

MATH

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

DEFINE | DEF

Command /Query

The DEFINE command sets the desired
waveform math operation.

The DEFINE? query returns the current
operation for the selected function.

DEFINE EQN,‘<equation>‘

Note:

<equation> is the mathematical expression,
enclosed by single or double quotation marks.

Function Equations

<source1> + <source2> Addition
<source1> - <source2> Subtraction
<source1>*<source2> Multiplication

<source1>/<source2> Ratio
FFT<source> FFT
INTG<source> Integral
DIFF<source> Differentiator

SQRT<source> Square Root

<source>:={C1,C2,C3,C4}

<source1>:={C1,C2,C3,C4}

<source2>:={C1,C2,C3,C4}

DEFINE?

DEFINE EQN,‘<equation>‘

•When the Math function is on, and both
Channel 1 and Channel 2 are on, the following
command sets the math operation to
Multiplication, source1 to C1, source2 to C2.
Command message:

DEFINE EQN,’C1*C2’

• When the Math function is on, and Channel 1

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Digital Oscilloscope Series

is on, the following command sets the math
operation to Differentiator, source to C1.
Command message:

DEFINE EQN,’DIFFC1’

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Digital Oscilloscope Series

MATH

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

INVERTSET | INVS

Command/Query

The INVERTSET command inverts the math
waveform.

The INVERTSET? query returns whether the
math waveform is inverted or not.

Note:

This command is only valid in add, subtract,
multiply and divide operation.

<trace>:INVERTSET <state>

<trace>:={MATH}

<state>:= {ON,OFF}

<trace>:INVERTSET?

<trace>:INVERTSET <state>

When the Math function is on, and the operation

is Add, the following command inverts the math
waveform.
Command message:

MATH:INVS ON

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Digital Oscilloscope Series

MATH

Command/Query

DESCRIPTION

COMMAND SYNTAX

MATH_VERT_DIV | MTVD

The MATH_VERT_DIV command sets the
vertical scale of the selected math operation.
This command is only valid in add, subtract,
multiply and divide operation.

The MATH_VERT_DIV? query returns the
current scale value for the selected operation.

MATH_VERT_DIV <scale>

<scale>:={500uV,1mV,2mV,5mV,10mV,20mV,
50mV,100mV,200mV,500mV,1V,2V,5V,10V ,2
0V ,50V,100V}(for add, subtract, multiply and
divide)

Note:

Legal values for the scale depend on the selected
operation. For details, please refer to the math
menu of the oscilloscope as shown below.

QUERY SYNTAX

RESPONSE FORMAT

MATH_VERT_DIV?

MATH_VERT_DIV <scale>

Model Format of <scale>

T3DSO1000(A) Numerical value

others

in E-notation with
SI unit, such as

5.00E-01V.

Numerical value

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Digital Oscilloscope Series

with measurement
unit and physical
unit, such as 500mV.

EXAMPLE

When the Math function is on, and the operator is
Add, the following command changes the vertical
scale of the math waveform to 1 V.

Command message:

MTVD 1V

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Digital Oscilloscope Series

MATH

Command/Query

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

MATH_VERT_POS | MTVP

The MATH_VERT_POS command sets the
vertical position of the math waveform with
specified source.

The FFT waveform isn‘t included, but we have
another command which called FFTP to set
vertical position.

The MATH_VERT_POS? query returns the
vertical position of the math waveform.

MATH_VERT_POS <point>

<point>:= -255 to 255.

Note:

The point represents the screen pixels and is
related to the screen center. For example, if the
point is 50. The math waveform will be
displayed 1 grid above the vertical center of the
screen. Namely one grid is 50.

MATH_VERT_POS?

MATH_VERT_POS <point>

When the Math function is on, the following
command sets the vertical position of the math
waveform to 1 grid above the screen vertical
center.
Command message:

MTVP 50

RELATED COMMANDS

FFTP

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Digital Oscilloscope Series

MATH

Command /Query

DESCRIPTION

COMMAND SYNTAX

FFT_CENTER | FFTC

The FFT_CENTER command sets the center
frequency when FFT (Fast Fourier Transform) is
selected.

The FFT_CENTER? query returns the current
center frequency of FFT waveform.

FFT_CENTER <center>
<center>:= frequency value with unit (MHz/
kHz/ Hz).

Note:

• If you set the center to a value outside of the
legal range, the center value is automatically set
to the nearest legal value. Legal values are
affected by the Hz/div setting.

• The range for center is related to the
horizontal scale of FFT and varied by models.
See the math menu of oscilloscope as shown
below for details.

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

FFT_CENTER?

FFT_CENTER <center>

When the Math function is on, the operator is
FFT, and the horizontal scale is 100 MHz, the
following command sets the center frequency of
FFT to 58 MHz.
Command message:

FFTC 58MHz

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Digital Oscilloscope Series

RELATED COMMANDS

Note:

The table below shows the availability of command in each oscilloscope series.

Model Valid?

T3DSO2000 no

T3DSO1000(A) yes

FFTT?

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Digital Oscilloscope Series

MATH

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

FFT_FULLSCREEN | FFTF

Command /Query

The FFT_FULLSCREEN command sets the
display mode of FFT waveform.

The FFT_FULLSCREEN? query returns
whether the FFT waveform is full screen
displayed.

FFT_FULLSCREEN <state>

<state>:= {OFF,ON, EXCLU}

• OFF — Split Screen.

• ON — Full Screen.

• EXCLU — Exclusive.

FFT_FULLSCREEN?

FFT_FULLSCREEN <state>

When the Math function is on, and the operator

is FFT, the following command sets the display
mode of FFT waveform to Full Screen.
Command message:

FFTF ON

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Digital Oscilloscope Series

MATH

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

FFT_POSITION | FFTP

Command /Query

The FFT_POSITION command sets the vertical
offset of FFT waveform. The unit is related to
the vertical scale type of the current FFT and the
unit of the channel.

The FFT_POSITION? query returns the current
vertical offset of the FFT waveform.

Note:

• This command is only valid when the scale
type is Vrms.

FFT_POSITION <offset>

<offset>:= -24.4*DIV to 15.6*DIV.

Note:

• If there is no unit (V/mV/uV) added, it
defaults to volts (V).

• If you set the offset to a value outside of the
legal range, the center value is automatically set
to the nearest legal value. Legal values are
affected by the Scale setting.

FFT_POSITION?

FFT_POSITION <offset>
<offset>:= Numerical value in E-notation with
SI unit.

• When the Math function is on, the operator is
FFT, and the scale is 10 mV, the following steps
set the offset of FFT waveform to 28 mV.

Step 1: Send command to set the scale unit to
Vrms.

Command message:

FFTU VRMS

Step 2: Send command to set the oset to 28mV

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Digital Oscilloscope Series

Command message:

FFTP 28mV

• When the Math function is on, the operator is
FFT, and the scale is 5 V, the following steps set
the offset of FFT waveform to -13.5 V.

Step 1: Send command to set the scale unit to
Vrms.

Command message:

FFTU VRMS

Step 2: Send command to set the offset to -

13.5V

Command message:

FFTP -13.5V

RELATED COMMANDS

Note:

The table below shows the availability of command in each oscilloscope series.

Model Valid?

T3DSO2000 no

T3DSO1000(A) yes

FFTS
FFTU

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Digital Oscilloscope Series

MATH

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

FFT_SCALE | FFTS

Command /Query

The FFT_SCALE command sets the vertical
scale of FFT waveform. The unit is related to the
vertical scale type of the current FFT and the
unit of the channel.

The FFT_SCALE? query returns the current
vertical scale of FFT waveform.

FFT_SCALE <scale>
<scale>:={0.1,0.2,0.5,1,2,5,10,20} when scale
type is dBVrms or dBm.

<scale>:={0.001,0.002,0.005,0.01,0.02,0.05,0.1,

0. 2,0.5,1, 2,5,10,20} when scale type is Vrms.

FFT_SCALE?

FFT_SCALE <scale>
<scale>:= Numerical value in E-notation with
SI unit.

• When the Math function is on, and the
operator is FFT, the following steps set the
vertical scale of FFT to 5 dBVrms.

Step 1: Send command to set the scale unit to
dBVrms.

Command message:

FFTU DBVRMS

Step 2: Send command to set the scale to 5.

Command message:

FFTS 5

• When the Math function is on, and the
operator is FFT, the following steps set the
vertical scale of FFT to 100 mVrms.

Step 1: Send command to set the scale unit to
Vrms.

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Digital Oscilloscope Series

Command message:

FFTU VRMS

Step 2: Send command to set the scale to 0.1.

Command message:

FFTS 0.1

RELATED COMMANDS

UNIT
FFTU
FFTP

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Digital Oscilloscope Series

MATH

DESCRIPTION

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

Note:

The table below shows the availability of command in each oscilloscope series.

Model Valid?

T3DSO2000 no

T3DSO1000(A) yes

The FFT_TDIV? query returns current
horizontal scale of FFT waveform.

FFT_TDIV?

FFT_TDIV <value>
<value>:= Numerical value with
measurement unit and physical unit.

The following query returns the horizontal scale
unit of FFT.
Query message:

FFTT?

Response message:

FFTT 100.00MHz

FFT_TDIV? | FFTT?

Query

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Digital Oscilloscope Series

MATH

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

RELATED COMMANDS

Note:

The table below shows the availability of command in each oscilloscope series.

Model Valid?

T3DSO2000 no

T3DSO1000(A) yes

The FFT_UNIT command sets the vertical scale
type of FFT (Fast Fourier Transform algorithm).

The FFT_UNIT? query returns the current
vertical scale type of FFT waveform.

FFT_UNIT <unit>
<unit>:={VRMS,DBM,DBVRMS}

FFT_UNIT?

FFT_ UNIT <unit>

For T3DSO1000(A) series, when the Math
function is on, and the operator is FFT, the
following command sets the vertical scale unit of
FFT to dBVrms.
Command message:

FFTU DBVRMS

FFTS
FFTP

FFT_UNIT | FFTU

Command /Query

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Digital Oscilloscope Series

MATH

Command /Query

DESCRIPTION

COMMAND SYNTAX

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

FFT_WINDOW | FFTW

The FFT_WINDOW command allows the
selection of five different windowing transforms
or operations for the FFT (Fast Fourier
Transform) function. Each window is useful for
certain classes of input signals.

The FFT_WINDOW? query returns the current
window of FFT.

FFT_WINDOW <window>
<window>:={RECT,BLAC,HANN,HAMM,FL
ATTOP}

• RECT — Rectangle is useful for transient
signals, and signals where there are an integral
number of cycles in the time record.

• BLAC — Blackman reduces time resolution
compared to the rectangular window, but it
improves the capacity to detect smaller impulses
due to lower secondary lobes (provides minimal
spectral leakage).

• HANN — Hanning is useful for frequency
resolution and general purpose use. It is good for
resolving two frequencies that are close together,
or for making frequency measurements.

• HAMM — Hamming.

• FLAT — Flattop is the best for making

accurate amplitude measurements of frequency
peaks.

FFT_WINDOW?

FFT_WINDOW <window>

When the Math function is on, and the operator
is FFT, the following command sets the FFT
window to Hamming.
Command message:

FFTW HAMM

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Digital Oscilloscope Series

MEASURE Commands

The commands in the MEASURE subsystem are used to make parametric
measurements on displayed waveforms.

To make a measurement, the portion of the waveform required for that
measurement must be displayed on the oscilloscope screen.

CYMT?
MEAD
PACU
PAVA?

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Digital Oscilloscope Series

MEASURE

DESCRIPTION

QUERY SYNTAX

RESPONSE FORMAT

CYMOMETER? | CYMT?

Query

The CYMOMETER? query measures and
returns the frequency counter of the specified
source. The counter measurement counts the
trigger level crossings at the selected trigger
slope and displays the results in MHz/kHz/Hz.

In the following picture, the content of the red
box is the measured value of the cymometer.

CYMOMETER?

CYMOMETER <freq>

Model Format of <freq>

T3DSO1000(A)

others Numerical value

Numerical value
in E-notation with
SI unit, such as

1.00E+03Hz.

with measurement
unit and physical
unit, such as

1.00001kHz.

Note:

When the signal frequency is less than 10 Hz, it
Returns 10 Hzǁ or <10Hzǁ .

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Digital Oscilloscope Series

EXAMPLE

• When the frequency of input signal is l Hz, the
following returns the value of cymometer which

displaying on the screen of the instrument.
Response message:

CYMT 10Hz

• When the frequency of input signal is

25.000137 MHz, the following returns the value of
cymometer which displaying on the screen of the
instrument.
Response message:

CYMT 2.50E+07 Hz

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Digital Oscilloscope Series

MEASURE

DESCRIPTION

COMMAND SYNTAX

MEASURE_DELAY | MEAD

Command/Query

The MEASURE_DELY command places the
instrument in the continuous measurement mode
and starts a type of delay measurement.

The MEASURE_DELY? query returns the
measured value of delay type.

MEASURE_DELAY <type>,<sourceA­sourceB>

<sourceA-sourceB>:={C1-C2,C1-C3,C1-C4,C2­C3,C2-C4,C3-C4}

<type>:={PHA,FRR,FRF,FFR,FFF,LRR,LRF,L
FR,LFF,SKEW}

Type Description

PHA

FRR

FRF

FFR

The phase difference
between two channels.
(rising edge - rising edge)

Delay between two
channels.
(first rising edge - first
rising edge)
Delay between two
channels.
(first rising edge - first
falling edge)
Delay between two channels.
(first falling edge - first
rising edge)

FFF

LRR

Delay between two channels.
(first falling edge - first
falling edge)

Delay between two channels.
(First rising edge - last rising

edge)

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Digital Oscilloscope Series

LRF

LFR

Delay between two channels.
(first rising edge - last
falling edge)

Delay between two channels.
(first falling edge - last
rising edge)

QUERY SYNTAX

RESPONSE FORMAT

EXAMPLE

LFF

Skew

<type>,<sourceA-sourceB>:MEASURE_DELY?

<sourceA-sourceB>:MEAD <type>,<value>

Model Format of <value>

T3DSO1000(A)

others Numerical value

The following steps show how to get the measured
value of phase between C2 and C4.

Step 1: Send the message to set the measurement
to Phase between C2 and C4, and then there
displays a phase measurement on the screen.

Delay between two channels.
(first falling edge - last
falling edge)

Delay between two channels.
(edge – edge of the same
type)

Numerical value
in E-notation with
SI unit, such as

1.24E-04S. Except
for PHA, it returns as
“44.65degree”.

in E-notation with
SI unit, such as

2.06E+01degree.

Command message:

MEAD PHA,C2-C4

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Digital Oscilloscope Series

Step 2: Send the message to get the measured
value of phase.

Command message:

C2-C4:MEAD? PHA

Response message:

C2-C4:MEAD PHA,-89.46degree

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