Tektronix CSA8000B, CSA8000, TDS8000, TDS8000B, TDS8200 Programmer Manual

8000 Series Digital Sampling Oscilloscopes Programmer Manual

www.tektronix.com

077-0008-02

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Table of Contents

Preface .............................................................................................................. iii

Getting Started .. ..... . ..... . ..... . ... . . ..... . ..... . ..... . ..... . ..... . ... . . . .... . ..... . ..... . ..... . ..... . ..... . .... 1-1

Setting Up Remote Communications.... . ..... . .... . . .... . ..... . ..... . ... . . ..... . ..... . ... . . . .... . ..... . .. 1-3

Command Syntax.................. ................................ ................................ ............... 2-1

Command and Query Structure ............................................................................ 2-1

Clearing the Instrument ..................................................................................... 2-3

Command Entry.............................................................................................. 2-4

Constructed Mnemonics .................................................................................... 2-6

Argument Types........... .................................. ................................ ................. 2-9

Command Entry............................................................................................ 2-11

Command Groups .............................................................................................. 2-15

Acquisition Command Group .... . ..... . ..... . ..... . ... . . . .... . ..... . ..... . ..... . ..... . ..... . ..... . ... . . . 2-15

Calibration Command Group............................................................................. 2-16

Compensation Command Group ......................................................................... 2-17

Cursor Command Group ......................... .................................. ....................... 2-19

Display Control Command Group .... ................................ .................................. . 2-20

Hard Copy Command Group...................... ................................ ....................... 2-21

Histogram Command Group ............................................................................. 2-22

Horizontal Command Group ...... ................................ ................................ ....... 2-23

Mask Command Group ........................ ................................ ........................... 2-27

Math Command Group................... .................................. ............................... 2-28

Measurement Command Group........... ................................ ............................... 2-29

Miscellaneous Command Group ......................................................................... 2-33

Phase Reference Command Group ...................................................................... 2-33

Save and Recall Command Group ....................................................................... 2-34

Status and Error Command Group........................................ ............................... 2-35

System Command Group ................................................................................. 2-36

TDR Command Group .................................................................................... 2-38

Trigger Command Group ........................ ................................ ......................... 2-39

Vertical Command Group.......................... ................................ ....................... 2-41

Waveform Database Command Group .................................................................. 2-43

Waveform Transfer Command Group................................................................... 2-45

Commands Listed in Alphabetical Order ......... ................................ ........................... 2-51

Status and Events ................................................................................................. 3-1

Registers ............. ................................ .................................. ....................... 3-1

Queues ........................................................................................................ 3-4

Event Handling Sequence................................................................................... 3-5

Synchronization Methods.................. ................................ ................................ . 3-6

Messages.................................................................................................... 3-11

CSA/TDS8000 Series Programmer Manual i

Table of Contents

Programming Ex

Appendix A: Character Set ..................................................................................... A-1

Appendix B: Reserved Words.................................................................................. B-1

Appendix C: Factory Default Setup Values................. ................................ .................. C-1

Appendix D: GPIB Interface Speciﬁcations........ ................................ .......................... D-1

Index

amples .......................... ................................ ............................... 4-1

ii CSA/TDS8000 Series Programmer Manual

Preface

This programmer manual provides you with the information required to use GPIB commands for remotely controlling your instrument. In addition to this Programmer G

uide, the following documentation is included with this instrument.

Documentation

CSA8200 Communications Signal Analyzer and TDS8200 Digital Sampling Oscilloscope Quick Start User Manual. The user manual has information about

installing and operating the instrument.

8000 Series Online Help. This online help system is the main source for user documentation of your instrument. Choose Help Contents and Index from the Help menu o

CSA/TDS8000 Series Instruments Product Documentation CD-ROM.

This CD-R CSA/TDS8000 series instruments including:

Document series instruments

Documen

Documentationtoverifyperformance

Oscilloscope Analysis and Connectivity Made Easy. This book explores some options for getting data from your instrument into any one of several available analys

ftheinstrument.

OM contains pdf ﬁles for various documentation relating to the

ation for the modules available for use with the CSA/TDS8000

tation to service the instrument and modules

is tools.

CSA/TDS8000 Series Programmer Manual iii

Preface

iv CSA/TDS8000 Series Programmer Manual

Getting Started

This programmer guide provides you with the information required to use GPIB commands for remotely controlling your instrument. With this information, you can write com front-panel controls, taking measurements, performing statistical calculations, and exporting data for use in other programs, such as spreadsheets.

Besides the traditional GPIB electronic interface (referred to as the physical GPIB interface), your instrument is provided with a TekVIS A GPIB-compatible interface (referred to as the virtual GPIB interface). This is a software Application Programming Interface (API) which enables you to communicate with the instrument in a variety of ways, including via the internet. With the following two exceptio

HEADER. Command headers enabled or disabled on one interface are correspo command descriptions for more detailed information.

puter programs that will perform functions such as setting the

ns, these interfaces are completely independent:

ndingly enabled or disabled on the other interface. Refer to the

VERBOSE enabled or disabled on the other interface. Refer to the command description for more detailed information.

Most examples in this document assume that both

. Verbosity enabled or disabled on one interface is correspondingly

HEADER and VERBOSE are ON.

CSA/TDS8000 Series Programmer Manual 1-1

Getting Started

The programmer

Getting Started. This topic introduces you to the programming information and provides b control.

Syntax and Co syntax that you use to communicate with the instrument and other general information about commands, such as how commands and queries are constructed, how to enter commands, constructed mnemonics, and argument types.

Command Groups. This topic contains all the commands listed by their functional groups. Each group consists of an overview of the commands in that group and a table that lists all the commands and queries for that group. You c a n c l the command.

Commands commands in alphabetical order and is where you can ﬁnd the complete description of each command.

Status and Events. This topic discusses the status and event reporting system for the GPIB interfaces. This system informs you of certain signiﬁcant events that occur within the instrument. Topics that are discussed include registers, queues, event handling sequences, synchronization methods, and messages that the instrument may return, including error messages.

guide is divided into the following major topics:

asic information about setting up your instrument for remote

mmands. This topic provides an overview of the command

ick a command in the listing to display a detailed description of

Listed in Alphabetical Order. This topic contains all the

Appendices. This topic contains miscellaneous information, such as a list of reserved words, a table of the factory initialization (default) settings, and

face speciﬁcations that may be helpful when using commands to remotely

inter control the instrument.

1-2 CSA/TDS8000 Series Programmer Manual

Getting Started

SettingUpRem

Connecting to the

Instrument

ote Communications

Before setting up the instrument for remote communications using the electronic (physical) GPIB interface, you should familiarize yourself with the following GPIB require

A unique device address must be assigned to each device on the bus. No two devices can s

No more than 15 devices can be connected to any one line.

One device should be connected for every 6 feet (2 meters) of cable used.

No more than 65 feet (20 meters) of cable should be used to connect devices to a bus.

At least two-thirds of the d evices on the network should be powered on while using the network.

Connect the devices on the network in a star or linear conﬁguration. Do not use loop or parallel conﬁgurations.

Your instrument has a 24-pin GPIB connector on its rear (side) panel. This connector has a D-type shell and conforms to IEEE Std 488.1–1987. Attach an IEEE Std 488.1–1987 GPIB cable to this connector and to your controller as shown in the following ﬁgure.

ments:

hare the same device address.

If necessary, the GPIB connectors can be stacked as shown in the ﬁgure below.

CSA/TDS8000 Series Programmer Manual 1-3

Getting Started

Setting the GPIB Address

To function correctly, your instrument must have a unique device address. The default settings for the GPIB conﬁguration are:

GPIB Address: 1

GPIB Mode: GPIB Talk/Listen

1-4 CSA/TDS8000 Series Programmer Manual

Getting Started

To change eithe

1. Select User Preferences from the Utilities menu.

2. Select the GPIB Conﬁguration Tab.

r of the GPIB settings, do the following:

3. Change the GPIB Address to a unique address.

4. Click OK.

The instrument is now set up for bidirectional communication with your controller.

Master/Slave Mode

CSA/TDS8000 Series Programmer Manual 1-5

The 8000 series instruments are factory set to be a GPIB device (slave), allowing you to control the instrument via the GPIB port. You can change the instrument to be a GPIB controller (master), allowing you to control other devices via the GPIB port.

GPIB/VISA Controller/Device (Master/Slave) S witch. The 8000 series instruments can be conﬁgured as a GPIB Device (Slave) or Controller (Master). The factory setting is conﬁgured to enable control of the instrument via the GPIB port, referred to as the “Device Mode”.

Getting Started

You can change t port by switching the instrument to be a GPIB Controller referred to as the “Controller Mode”.

To switch the instrument between these two modes, use the GPIB Device-Controller Utility found in the Windows Start menu under Programs > Tektronix TDSCSA8000 > GPIB Device-Controller Utility. Starting this utility displays the TekGpibSwitcher screen which allows you to switch the instrument between the two modes.

NOTE. Switc

he instrument to be used to control other devices via the GPIB

hing the mode causes the instrument to automatically reboot.

1-6 CSA/TDS8000 Series Programmer Manual

Command Syntax

You can control the operations and functions of the instrument through the GPIB interface using commands and queries. The related topics listed below describe the conventions that the instrument uses to process them. See the Command Groups topic in the table of contents for a listing of the commands by command group, or use the index to locate a speciﬁccommand.

syntax of these commands and queries. The topics also describe the

Backus-Naur Form

Notation

This documentation describes the commands and queries using Backus-Naur Form (BNF) notation. Refer to the following table for the symbols that are used.

Table 2-1: Symbols for Backus-Naur Form

Symbol Meaning

::=

| Exclusive OR

{ } Group; one element is required

[]

.. .

( ) Comment

Command and Query Structure

Comman commands and queries). Commands modify instrument settings or tell the instrument to perform a speciﬁc action. Queries cause the instrument to return data and status information.

ds consist of set commands and query commands (usually called

Deﬁned element

Is deﬁned as

Optional; can be omitted

Previous element(s) may be repeated

Most commands have both a set form and a query form. The query form of the command differs from the set form by its question m ark on the end. For example, the set command commands have both a set and a query form. Some commands have set only and

ehavequeryonly.

som

Messages

CSA/TDS8000 Series Programmer Manual 2-1

A command message is a command or query name followed by any information the instrument needs to execute the command or query. Command messages may

ntain ﬁve element types, deﬁned in the following table.

ACQuire:MODe has a query form ACQuire:MODe?.Notall

Command Syntax

Commands

Table 2-2: Comm

Symbol Meaning

<Argument> This is a quan

<Comma> A single com

<Space>

Commands

and Message Elements

This is the basic command name. If the header ends with a question mark, the command is a query. The header may begin with a colon (:) c haracter the beginning colon is required. Never use the beginning colon with command headers beginning with a star (*).

This is a header subfunction. Some command headers have only one mnemonic. If character always separates them from each other.

Some commands have no arguments while others have multiple arguments. A <space> separates arguments from the header. A <comma> sep

commands. Optionally, there may be white space characters before and after the comma.

A white space character is used between a command header and the related argument. Optionally, a white space may consist of multiple white spac

. If the command is concatenated with other commands,

a command header has multiple mnemonics, a colon (:)

tity, quality, restriction, or limit associated with the header.

arates arguments from each other.

ma is used between arguments of multiple-argument

e characters.

cause the instrument to perform a speciﬁc function or change one of

the settings. Commands have the structure:

[:]<Hea

der>[<Space><Argument>[<Comma> <Argument>]...]

A command header consists of one or more mnemonics arranged in a hierarchical or tree s

tructure. The ﬁrst mnemonic is the base or root of the tree and each subsequent mnemonic is a level or branch off the previous one. Commands at a higher level in the tree may affect those at a lower level. The leading colon (:) always returns you to the base of the command tree.

2-2 CSA/TDS8000 Series Programmer Manual

Command Syntax

Queries

Headers

Queries cause t

he instrument to return status or setting information. Queries

have the structure:

[:]<Header>?

[:]<Header>?[<Space><Argument> [<Coma><Argument>]. ..]

You can specify a query command at any level within the command tree unless otherwise noted. These branch queries return information about all the mnemonics below the spe

ciﬁed branch or level. For example, HIStogram:STATistics:STDdev? returns the standard deviation of the histogram, while HIStogram:STATistics? returns all the histogram statistics, and HIStogram? returns all the histogram parameters.

You can control whether the instrument returns headers as part of the query response. Use the HEADer command to control this feature. If header is on, the query response returns command headers, then formats itself as a valid set command. When header is off, the response includes only the values. This may make it easier to parse and extract the information from the response. The table below sh

ows the difference in responses.

Table 2-3: Comparison of Header Off and Header On Responses

Query Header Off Header On

TIME?

ACQuire:NUMAVg?

"14:30:00" :TIME"14:30:00"

100

:ACQUIRE:NUMAVG 100

Clearing the Instrument

You can clear the Output Queue and reset the instrument to accept a new command or query by using the selected Device Clear (DCL) GPIB function. Refer to your GPIB library documentation for further d etails about the selected Device Clear operation.

CSA/TDS8000 Series Programmer Manual 2-3

Command Syntax

Command Entry

The following rules apply when entering commands:

You can enter commands in upper or lower case.

You can precede any command with white space characters. White space characters include any combination of the ASCII control characters 00 through 09 and 0B through 20 hexadecimal (0 through 9 and 11 through 32 decimal).

The instrument ignores commands consisting of any combination of white space characters and line feeds.

Abbreviating

Concat

enating

You can abbreviate many instrument commands. Each command in this documentation shows the abbreviations in capitals. For example, you can enter the command ACQuire:NUMAvg simply as ACQ:NUMA or acq:numa.

Abbreviation rules may change over time as new instrument models are introduced. Thus, for the most robust code, use the full spelling.

If you use the HEADer command to have command headers included as part of query responses, you can further control whether the returned headers are abbreviated or are full-length with the VERBose command.

You can concatenate any combination of set commands and queries using a semicolon (;). The instrument executes c oncatenated commands in the order received.

2-4 CSA/TDS8000 Series Programmer Manual

Command Syntax

When concatena

ting commands and queries, you must follow these rules:

1. Separate completely different headers by a semicolon and by the beginning

colon on all commands except the ﬁrst one. For example, the commands

TRIGger:MODe NORMal and ACQuire:NUMAVg 10, can be concatenated

into the following single command:

TRIGger:MODe NORMal;:ACQuire:NUMAVg 10

2. If concatenated commands have headers that differ by only the last mnemonic,

you can abbreviate the second command and eliminate the beginning colon. For example, you can concatenate the commands

ACQuire:MODe ENVelope

and ACQuire:NUMAVg 10 into a single command:

ACQuire:MODe ENVelope; NU MAVg 10

The longer version works equally well:

ACQuire:MODe ENVelope;:ACQuire:NUMAVg 10

3. Never precede a star (*) command with a colon:

ACQuire:MODe ENVelope;*OPC

Any commands that follow will be processed as if the star command was not there so the commands,

ACQuire:MODe ENVelope;*OPC;NUMAVg 10 will

set the acquisition mode to envelope and set the number of acquisitions for averaging to 10.

4. When you concatenate queries, the responses to all the queries are

concatenated into a single response message. For example, if the display imageview color is temperature and the display recordview color is spectral, the concatenated query

RECORDVIEW?

will return the following.

DISplay:COLOr:PALETTE:IMAGEVIEW?;

If the header is on:

:DISPLAY:COLOR:PALETTE:IMAGEVIEW TEMPERATURE; :DISPLAY:COLOR:PALETTE:RECORDVIEW SPECTRAL

If the header is off:

TEMPERATURE;SPECTRAL

5. Set commands and queries may be concatenated in the same message. For

example,

ACQuire:MODe SAMple;NUMAVg?;STATE?

is a valid message that sets the acquisition mode to sample. The message then queries the number of acquisitions for averaging and the acquisition state. Concatenated commands and queries are executed in the order received.

Here are some invalid concatenations:

DISPlay:STYle:NORMal;ACQuire:NUMAVg 10 (no colon before ACQuire)

CSA/TDS8000 Series Programmer Manual 2-5

Command Syntax

Terminating

DISPlay:COLor DISPlay:COLor:CURSor1 1:CURSor2 5 instead)

DISPlay:STYl

DISPlay:COLor:CURSor1 1;COLor:CURSor2 5 (levels of the mnemonics

are differen front of

COLor:CURSor2 5)

:CURSor1 1;:CURSor2 5

e:NORMal;:*OPC

(colon before a star (*) command)

t; either remove the second use of

(extra colon before CURSor2; use

COLor or place :DISPlay: in

This documentation uses <EOM> (End of message) to represent a message terminator

Table 2-4: End of Message Terminator

Symbol Meaning

<EOM>

Message terminator

The end-of-message terminator must be the END message (EOI asserted concurrently with the last data byte). The last data byte may be an ASCII linefeed (LF) cha

racter.

This instrument does not support ASCII LF only message termination. The instrum

ent always terminates outgoing messages with LF and EOI.

Constructed Mnemonics

Some he a channel mnemonic can be CH1, CH2, CH3, ... through CH8. You use these mnemonics in the command just as you do any other mnemonic. For example, there is a CH1:POSition command, and there is also a CH2:POSition command. In the command descriptions, this list of choices is abbreviated a s CH<x>.

Cursor Position

Mnemonics

When cursors are displayed, commands may specify which cursor of the pair to use.

Table 2-5: Cursor Mnemonics

Sym

CUR

ader mnemonics specify one of a range of mnemonics. For example,

bol

SOR<x>

ning

Mea

A cursor selector; <x> is either 1 or 2.

2-6 CSA/TDS8000 Series Programmer Manual

Table 2-5: Cursor Mnemonics, (cont.)

Symbol Meaning

POSITION<x>

HPOS<x>

A cursor selector; <x> is either 1 or 2.

Command Syntax

Histogram Statistics

Speciﬁer M

nemonics

Magniﬁed Timebase

Speciﬁer Mnemonics

Mask Speciﬁer Mnemonics

Commands can specify which Sigma value to return for histogram statistics as a mnemonic i

n the header. A Sigma is speciﬁed in this way:

Table 2-6: Histogram Statistics Speciﬁer Mnemonics

Symbol Meaning

SIGMA<x> A histogram statistics speciﬁer; <x> is either 1, 2, or 3.

Commands can specify which of two magniﬁed timebases to set or query as a mnemonic in the header. The magniﬁed timebases are speciﬁed in this way:

Table 2-7: Magniﬁed Timebase Speciﬁer Mnemonics

Symbol Meaning

MAG<x> A magniﬁed speciﬁer; <x> is 1or 2.

Commands can specify w hich mask to set or query as a mnemonic in the header.

asks are speciﬁed in this way:

The m

Table2-8:MaskSpeciﬁer Mnemonics

Symbol Meaning

MASK<x> A mask speciﬁer; <x> is 1 through 8.

asurement Speciﬁer

Mnemonics

Commands can specify which measurement to set or query as a mnemonic in the header. Up to eight automated measurements may be displayed with each displayed waveform. The displayed measurements are speciﬁed in this way:

able 2-9: Measurement Speciﬁer Mnemonics

Symbol Meaning

MEAS<x> A measurement speciﬁer; <x> is 1 through 8.

CSA/TDS8000 Series Programmer Manual 2-7

Command Syntax

Table 2-9: Measurement Speciﬁer Mnemonics, (cont.)

Symbol Meaning

SOURCE<x> A waveform speciﬁer; <x> is either 1 (Source 1 waveform) or 2 (Source

2 waveform).

REFLevel<x>

A waveform speciﬁer for reference level measurements; <x> is either 1 (Source 1 waveform) or 2 (Source 2 waveform).

Channel Mn

emonics

Math Waveform

Mnemonics

Reference Waveform

Mnemonics

Commands specify the channel to use as a mnemonic in the header.

Table 2-10: Channel Mnemonics

Symbol Meaning

CH<x> A channel

Command

s can specify the mathematical waveform to use as a mnemonic in

speciﬁer; <x> is 1 through 8.

the header.

Table 2-11: Math Waveform Mnemonics

Symbol Meaning

Math<x>

A math waveform speciﬁer; <x> is 1 through 8.

Commands can specify the reference waveform to use as a mnemonic in the header.

e 2-12: Reference Waveform Mnemonics

Tabl

Symbol Meaning

REF<

A reference waveform speciﬁer; <x> is 1 through 8.

Waveform Database

Mnemonics

Commands can specify the reference waveform to use as a mnemonic in the header.

Table 2-13: Waveform Database Mnemonics

Rules

ymbol

WFMDB<x>

The following rules apply when entering commands:

eaning

waveform database speciﬁer; <x> is either 1 or2.

2-8 CSA/TDS8000 Series Programmer Manual

Command Syntax

Abbreviating

Argument Types

Numeric

You c a n e n t er c o

mmands in upper or lower case.

You can precede any command with white space characters. White space characters in

clude any combination of the ASCII control characters 00 through

09 and 0B through 20 hexadecimal (0 through 9 and 11 through 32 decimal).

The instrume

nt ignores commands consisting of any combination of white

space characters and line feeds.

You can abbreviate many instrument commands. Each command in this documentat

ion shows the abbreviations in capitals. For example, you can enter

the command ACQuire:NUMAvg simply as ACQ:NUMA or acq:numa.

Abbreviat

ion rules may change over time as new instrument models are

introduced. Thus, for the most robust code, use the full spelling.

If you use

the HEADer command to have command headers included as part of query responses, you can further control whether the returned headers are abbreviated or are full-length with the VERBose command.

Many instrument commands require numeric arguments. The syntax shows the format that the instrument returns in response to a query. This is also the preferred format when sending the command to the instrument though any of the formats will be accepted. This documentation represents these arguments as follows:

Quoted String

2-14: Numeric Arguments

Table

Symbol Meaning

<NR1>

<NR2> Float

<NR3> Floating point value with an exponent

Signed integer value

ing point value without an exponent

Most numeric arguments will be automatically forced to a valid setting, either by

ding or truncating, when an invalid number is input unless otherwise noted

roun in the command description.

Some commands accept or return data in the form of a quoted string, which is

mply a group of ASCII characters enclosed by a single quote (’) or double quote

si ("). The following is an example of a quoted string:

string"

. This documentation represents these arguments as follows:

"This is a quoted

CSA/TDS8000 Series Programmer Manual 2-9

Command Syntax

Table 2-15: Quo

Symbol Meaning

<QString> Quoted string of ASCII text

ted String Argument

A quoted string can include any character deﬁned in the 7-bit ASCII character set. Follow these rules when you use quoted strings:

1. Use the same type of quote character to open and close the string. For example:

"this is a valid string".

2. You can mix quotation marks within a string as long as you follow the previous rule. For example,

"this is an ’acceptable’ string".

3. You can include a quote character within a string by repeating the quote. For example:

"here is a "" mark".

4. Strings can have upper or lower case characters.

5. If you use a GPIB network, you cannot terminate a quoted string with the

END message before the closing delimiter.

6. A carriage return or line feed embedded in a quoted string does not terminate the string, but is treated as just another character in the string.

7. The maximum length of a quoted string returned from a query is 1000 characters.

Block

Here are some invalid strings:

"Invalid string argument’ (quotes are not of the same type)

OI>"

"test<E

(termination character is embedded in the string)

Several instrument commands use a block argument form (see the following table).

Table 2-16: Block Argument

Symbol Meaning

<NZDig>

<Dig>

<DChar> A character with the hexadecimal equivalent of 00 through FF (0

<Block>

A nonzero digit character in the range of 1–9

A digit character, in the range of 0–9

through 255 decimal)

A block of data bytes deﬁned as: <B lock> ::= {#<NZDig><Dig>[<Dig>...][<DChar>...] |#0[<DChar>...]<terminator>}

<NZDig> speciﬁes the number of <Dig> elements that follow. Taken together, the <NZDig> and <Dig> elements form a decimal integer that speciﬁes how many <DChar> elements follow.

2-10 CSA/TDS8000 Series Programmer Manual

Command Entry

Command Syntax

Concatenat

ing

You can concatenate any combination of set commands and queries using a semicolon (;). The instrument executes concatenated commands in the order received.

CSA/TDS8000 Series Programmer Manual 2 -11

Command Syntax

When concatena

ting commands and queries, you must follow these rules:

Separate completely different headers by a semicolon and by the beginning colon on all commands except the ﬁrst one. For example, the commands,

TRIGger:MODe NORMal and ACQuire:NUMAVg 10, can be concatenated

into the following single command:

TRIGger:MODe NORMal;:ACQuire:NUMAVg 10

If concatenated commands have headers that differ by only the last mnemonic, you can abbreviate the second command and eliminate the beginning colon. For example, you can concatenate the commands ACQuire:MODe ENVelope andACQuire:NUMAVg10intoasinglecommand:

ACQuire:MODe ENVElope; NUMAVg 10

The longer version works equally well:

ACQuire:MODe ENVElope;:ACQuire:NUMAVg 10

Never precede a star (*) command with a colon:

ACQuire:MODe ENVElope;*OPC

Any commands that follow will be processed as if the star command was not there. For example, the ACQuire:MODe ENVElope;*OPC;NUMAVg 10 commands will set the acquisition mode to envelope and set the number of acquisitions for averaging to 10.

When you concatenate queries, the responses to all the queries are concatenated into a single response message. For example, if the display background color is white and the display foreground color is black, the concatenated query DISplay:COLor:BACKGround?;FOREGround? will return the following:

Iftheheaderison:

:DISPLAY:COLOR:BACKGROUND 7;

:DISPLAY:COLOR:FOREGROUND 0

If the header is off:

7;0

Set commands and queries may be concatenated in the same message. For example,

ACQuire:MODe SAMple;NUMAVg?;STATE?

Here are some invalid concatenations:

2-12 CSA/TDS8000 Series Programmer Manual

Command Syntax

Terminating

DISPlay:STYle

:NORMal;ACQuire:NUMAVg 10 (no colon before ACQuire)

DISPlay:COLor:CURSor1 1;:CURSor2 5 (extra colon before CURSor2; use DISPlay:COLo

r:CURSor11;CURSor25instead)

DISPlay:STYle:NORMal;:*OPC (colon before a star (*) command)

ISPlay:COLor:CURSor1 1;COLor:CURSor2 5 (levels of the mnemonics are different; either remove the second use of COLor or place :DISPlay: in front of COLo

r:CURSor2 5)

This documentation uses <EOM> (End of message) to represent a message terminator.

Table 2-17

Symbol Meaning

<EOM>

: End of Message Terminator

Message te

rminator

The end-of-message terminator must be the END message (EOI asserted concurrently with the last data byte). The last data byte may be an ASCII linefeed (LF) character. This instrument does not support ASCII LF only message termina

tion. The instrument always terminates outgoing messages with LF and

EOI. It allows white space before the terminator. For example, it allows CR LF.

CSA/TDS8000 Series Programmer Manual 2-13

Command Syntax

2-14 CSA/TDS8000 Series Programmer Manual

Command Groups

The CSA/TDS8000 Series programmable interfaces conform to Tektronix standard codes and formats except where noted. The GPIB interface also conforms to I

Acquisition Command Group

Use the commands in the Acquisition Command Group to set up the modes and functions that control how the instrument acquires the signals you input to the channels and processes them into waveforms.

Using these commands for acquiring waveforms, you can do the following:

Start and stop acquisitions.

Control whether each waveform is simply acquired, averaged, or enveloped over successive acquisitions of that waveform.

Set the controls or conditions that start and stop acquisitions.

Determine the action the system takes upon completing an acquisition, such as saving all waveforms and taking a measu stopped.

EEE Std 488.2-1987 except where noted.

rement when the acquisition is

Get data on acquired waveforms, histograms, and masks.

Get acquisition parameters.

Clear all acquired data.

Table 2-18: Acquisition Commands

Command Description

ACQuire?

ACQuire:CURRentcount:ACQWfms? Returns acquired waveforms count

ACQuire:CURRentcount:HISTHits?

ACQuire:CURRentcount:HISTWfms? Returns histogram waveforms count

ACQuire:CURRentcount:MASKHits<x>?

ACQuire:CURRentcount:MASKSamples?

ACQuire:CURRentcount:MASKTHits?

ACQuire:CURRentcount:MASKWfms? Returns mask waveforms count

ACQuire:DATA:CLEar Clears all acquired data

ACQuire:MODe Sets or returns acquisition mode

ACQuire:NUMAVg Sets or returns number of acquisitions for an

ACQuire:SAVEFile:SAVEScreen Sets or returns the ﬁle to save screen to on

Returns acquisition parameters

Returns histogram hits count

Returns mask hits count

Returns mask samples count

Returns total mask hits count

averaged waveform

acquisition stopped

CSA/TDS8000 Series Programmer Manual 2-15

Command Groups

Table 2-18: Acquisition Commands, (cont.)

Command Description

ACQuire:SAVEFile:SAVEWfm Sets or returns the ﬁle to save waveform

data to on acquisition stopped

ACQuire:STATE Starts, stops, or returns acquisition state

ACQuire:STOPAfter? Returns all stopafter parameters

ACQuire:STOPAfter:ACTion Sets or returns the stopafter action

ACQuire:STOPAfter:BELL Sets or returns whether to sound bell on

acquisition stopped

ACQuire:STOPAfter:CONDition Sets or r eturns the acquisition stopafter

condition

ACQuire:STOPAfter:COUNt Sets or returns the stopafter count value

The stopafter count value is dependent on the condition set by the ACQuire:STOPAfter:CONDiton command

ACQuire:STOPAfter:MODe Sets or returns the stopafter mode

Calibration Command Group

The calibration commands provide information about the current state of the calibration for the mainframe and all resident sampling-module channels. Additional commands allow you to update portions of the “electronic calibration sticker” information, to check the protection status of the calibration information, and to set or query the front-panel DC calibration output.

Command

CALibrate:DATE:CH<x>? Returns date and time of the last sampling

CALibrate:DATE:MAInframe? Returns the date and time of the last

CALibrate:DCCALibrator Sets o returns the value of the DC Calibrator

CALibrate:HOSTinfo:CH<x>? Returns the mainframe model number, serial

CALibrate:LOCK:STATus? Returns the status of the calibration

CALibrate:STATus:CH<x>? Returns calibration status for speciﬁed

CALibrate:STATus:MAInframe? Returns calibration status for mainframe

Description

module channel<x> calibration

mainframe calibration

voltage

number, and mainframe channel<x> in which the sampling module channel was located during the last calibration information update.

information hardware lock switch

sampling module channel<x>

2-16 CSA/TDS8000 Series Programmer Manual

Command Groups

Command

CALibrate:TEMPerature:CH<x>? Returns the difference in ºC between

CALibrate:TEMPerature:MAInframe? Returns the difference in ºC between the

CALibrate:UPDATEinfo:ALL Updates date, time, temp and (for sampling

CALibrate:UPDATEinfo:CH<x> Updates the calibration information in the

CALibrate:UPDATEinfo:MAInframe Updates the calibration information in the

Compensation Command Group

The compensation commands provide information about the current state of the compensation for the mainframe and all resident module channels, means to invoke compensation functions, and management of compensation storage memory locations.

Description

the current sampling module c hannel<x> temperature a at the last calibration information update

current mainframe temperature and the temperature information update

modules) host mainframe information

nonvolatil channel<x>

nonvolatile memory of the mainframe

nd the temperature recorded

recorded at the last calibration

e memory of the sampling module

There are two nonvolatile compensation storage memory blocks in the mainframe and each sampling module channel: Factory and User. In addition, there is a volatile run-time, in-use version of all compensation data, which is the compensation data actually used during the operation of the instrument.

Command

COMPensate:ALL Compensates the mainframe and all resident

COMPensate:CH<x> Compensates the module channel<x> for

COMPensate:DARKLev:CH<x> Compensates the speciﬁed optical

COMPensate:DATE:CH<x>? Returns date and time of the current

COMPensate:DATE:MAInframe? Returns date and time of the current in-use

COMPensate:MAInframe Compensates the mainframe for DC

COMPensate:OPTGAIN:CH<x> Compensates optical user wavelength gain

Description

modules

DC variances

channel<x> by removing residual DC offsets in the entire vertical path

in-use compensation data for the module channel<x>

compensation data for the mainframe

variances

(wavelengths and input power)

CSA/TDS8000 Series Programmer Manual 2-17

Command Groups

Command

COMPensate:RECAll:FACTory:ALL Recalls compensation data for the mainframe

COMPensate:RECAll:FACTory:CH<x> Recalls compensation data from the

COMPensate:RECAll:FACTory:MAInframe Recalls compensation data from the

COMPensate

COMPensat

COMPensa

COMPensate:RESults? Returns brief explanation of the results of the

COMPens

COMPensate:SAVe:USER:ALL Saves volatile run-time compensation

COMPensate:SAVe:USER:CH<x> Saves volatile run-time compensation data

COMPensate:SAVe:USER:MAInframe Saves volatile run-time compensation data

COMPe

COMPensate:STATus:MAInframe? Returns the current compensation status of

:RECAll:USER:ALL

e:RECAll:USER:CH<x>

te:RECAll:USER:MAInframe

ate:RESults:VERBose?

nsate:STATus:CH<x>?

Description

and all resident module channels from their nonvolatile f compensation memory

nonvolatile factory memory of the module channel<x> i memory

nonvolatile factory memory in the mainframe into its ass

Recalls com and all resident module channels from their respective nonvolatile user memories into run-time c

Recalls co nonvolatile user memory of the module channel<x> into its associated run-time memory

Recalls c nonvolatile user memory in the mainframe into its associated run-time mem o ry

last com

Returns with a more detailed explanation than the COMPensate:RESults? query returns

data for modules into their associated nonvolatile user memories

for the user memory

for the mainframe into its nonvolatile user memor

Retur the speciﬁed module channel<x>

the mainframe

actory memories into run-time

nto its associated run-time

ociated run-time memory

pensation data for the mainframe

ompensation memory

mpensation data from the

ompensation data from the

pensation

results of last compensation,

the mainframe and all resident

module channel<x> into its nonvolatile

ns the current compensation status of

2-18 CSA/TDS8000 Series Programmer Manual

Command Groups

Command

COMPensate:TEMPerature:CH<x>? Returns the difference in ºC between

COMPensate:TEMPerature:MAInframe? Returns the difference in ºC between the

Cursor Command Group

Use the commands in the Cursor Command Group to control the cursor display and readout. You can use these commands to control the setups for cursor 1 and cursor 2, such as waveform source, cursor position, and cursor color.

You can also use the commands to select one of the following cursor functions:

Description

the current temperature of the module channel<x> an residing in its in-use run-time compensation memory

current main temperature currently residing in its in-use run-time compensation memory

d the temperature currently

frame temperature and the

Off Shuts off the display of all cursors.

Vertical Bars. Displays vertical bar cursors, which provide traditional

horizontal unit readouts for Cursor 1 (bar1), Cursor 2 (bar2), the delta between them, and 1/delta (results in frequency when the horizontal unit is time).

Horizontal Bars. Displays horizontal bar cursors, which provide traditional vertical unit readouts for Cursor 1 (bar1), Cursor 2 (bar2), and the delta between them.

Wavef orm. Displays waveform cursors, which provide horizontal and vertical unit readouts for Cursor 1 (bar1), Cursor 2 (bar2), the delta between them, and 1/delta (results in frequency when the horizontal unit is time).

Command

CURSor?

CURSor:CURSor<x>:COLOR Sets or returns cursor<x> color

CURSor:CURSor<x>:SOUrce Sets or returns cursor<x> waveform source

CURSor:FUNCtion Sets or returns the cursor type

CURSor:HBArs?

CURSor:HBArs:DELTa? Returns hbars cursors vertical difference

CURSor:HBArs:POSition<x> Sets or returns the hbar cursor<x> vertical

CURSor:SELect Sets or returns which cursor is active for

CURSor:VBArs?

CURSor:VBArs:DELTa? Returns the difference between vbar cursors

Description

Returns all cursor parameters

and timebase

Returns hbar cursor parameters

position

front-panel control

Returns vbar cursor parameters

CSA/TDS8000 Series Programmer Manual 2-19

Command Groups

Display Control Co

Command

CURSor:VBArs:POSition<x> Sets or r eturns the vbar cursor<x> horizontal

CURSor:WAVeform? Returns waveform cursor parameters

CURSor:WAVeform:HDELTa? Returns the horizontal difference between

CURSor:WAVe

CURSor:WAVeform:VDELTa? Returns the vertical difference between

form:HPOS<x>?

form:POSition<x>

Description

position

waveform cur

Returns the p

Sets or retur cursor <x>

waveform cursors

sors

osition of waveform cursor <x>

ns the position of waveform

mmand Group

You use the commands in the Display Control Command Group to change the graticule style, the displayed intensities, and to set the characteristics of the waveform display

You can set the following:

Background color (default is black) and foreground color (default is silver).

Cursor, histogram, mask, and measurement annotation colors.

Whether cursor, histogram, mask, and measureme nt readouts are displayed.

Whether measurement annotations are displayed.

Whether waveforms are simply displayed in Normal mode as dots or vectors, in Variable Persistence mode, or in Inﬁnite Persistence mode.

Whether the instrument uses interpolation to increase sample density of waveform for record lengths less than 500 points, and, if interpolation is used, which type (Sin(x) or Linear).

The style of graticule that underlies the waveforms.

Use the commands to set the style that best displays your waveforms and graticule display properties. The mode you choose globally affects all displayed waveforms; for examp

le, you cannot set channel 1 to display in Normal mode and

channel 2 in Variable Persistence mode.

There are four graticule settings:

Frame

Grid

Cross Hair

Full

2-20 CSA/TDS8000 Series Programmer Manual

Command Groups

Choose Frame or

Grid for minimum clutter on screen; choose Full or Cross Hair

for ease in taking graticule measurements.

Command

DISplay?

DISplay:COLor?

DISplay:COLor:BACKground Sets or returns graticule background color

DISplay:COLor:CURSor<x> Sets or returns cursor<x> color

DISplay:COLor:FOREground Sets or returns graticule foreground color

DISplay:COLor:HIStogram Sets or returns histogram rectangle and plot

DISplay:COLor:MASK Sets or returns mask color

DISplay:CURSReadout Sets or returns the display state of the cursor

DISplay:DATe Turns the Date/Time display on or off or

DISplay:GRAticule?

DISplay:GRAticule:HDIVS? Returns the number of horizontal divisions

DISplay:GRAticule:STYLE Sets or returns the graticule style

DISplay:GRAticule:VDIVS? Returns the number of vertical divisions in

DISplay:HISTReadout Sets or returns the display state of the

DISplay:INTERPolat Sets or returns the display interpolation type

DISplay:MASKReadout Sets or returns the display state of the mask

DISplay:MEASBar Sets or returns the display state of the

DISplay:MEASReadout Sets or returns the display state of the

DISplay:PERSistence Sets or returns the display persistence time

DISplay:SHOWVector Sets or returns the show vector status

DISplay:STYle Sets or returns the display persistence style

DISplay:WFMReadout Sets or returns the display state of the

Description

Returns current display settings

Returns color group settings

color

readout

returns the status of the Date/Time display

Returns all graticule parameters

in graticule

graticule

histogram readout

readout

measurement bar

measurement readout

waveform readout

Hard Copy Command Group

Hard copy commands allow you to make hard copies of your data ﬁle or send hard copy data in various formats to a speciﬁed ﬁle.

CSA/TDS8000 Series Programmer Manual 2-21

Command Groups

Histogram C

Command

HARDCopy Sends a screen copy to the selected port or

HARDCopy:FILEName Sets or returns the hard copy ﬁle path

HARDCopy:FORMat Selects the ﬁle format when sending

HARDCopy:INKSaver Sets the Ink-saver mode on or off. Ink-saver

ommand Group

Histogram commands let you select the type of histogram, what part of the waveform should go into the histogram , and histogram statistics. You can use commands

Select any channe l, math, or reference waveform and create a histogram of vertical

Adjust the limits of the box that d eﬁne the area on the waveform from which the hist waveform coordinates or percentage-of-display coordinates.

Description

returns the selected port and ﬁle path

a hardcopy to HARDCopy:FILEName command.

mode can conserve ink and improve print quality when displays.

a ﬁle using the

printing images of waveform

from this group to do the following:

or horizontal values for it.

ogram data is obtained. The histogram box can be set using source

Create a

linear or logarithmic plot of histogram data and set plot size and color.

Clear histogram count and restart.

Turn the display of the histogram on or off.

Enable or disable histogram calculations.

Get histogram statistics, such as total hits, mean value, peak-to-peak value, and standard deviation.

Get all the histogram parameters.

NOTE. You can also export a histogram to a ﬁle of comma-separated values. See

the EXPort command for more information.

Comma

ogram?

HISt

ogram:BOX

HISt

Description

Return all histogram parameters

or returns the left, top, right, and bottom

Sets positions of the histogram box, in source waveform coordinates

2-22 CSA/TDS8000 Series Programmer Manual

Command Groups

Command

HIStogram:BOXPcnt Sets or returns same as HIStogram:BOX, but

HIStogram:CO

HIStogram:C

HIStogram:DISplay Sets or returns whether histogram data is

HIStogram:ENABle

HIStogram:

HIStogram:SIZe Sets or returns the width (or height) of the

HIStogram:

HIStogram:STATistics?

HIStogram:STATistics:HITS?

HIStogram:STATistics:MEAN?

HIStogram:STATistics:MEDIAN?

HIStogram:STATistics:PEAKHits?

HIStogram:STATistics:PKTOPK?

HIStogram:STATistics:SIGMA<x>? Returns population density for ±<x> sigma

HIStogra

HIStogr

HIStogram:TYPE Sets or returns whether the histogram is

HIStogram:WFMDB:STATE Sets or returns whether the histogram

LOr

OUNt

MODe

SOUrce

m:STATistics:STDdev?

am:STATistics:WAVeforms?

Description

in percentage coordinates, with 0,0 upper left and 100,100 lo

Sets or return

Clears histo restarts counting

displayed on screen

Enables or disables histogram calculations

Returns whether histogram calculations are enabled

Sets type of vertical or horizontal

Returns the type of histogram

histogram o

Sets or retu and timebase (Main, Mag1, or Mag2) for histogram

Returns all histogram statistics

Returns the histogram total hits value

Returns the histogram mean value

Returns the histogram median value

Returns the histogram peak hits value

Returns the histogram peak to peak value

value

Returns the histogram standard deviation value

Returns histogram

displayed linearly or logarithmically

ng is on a waveform database

counti

wer right

s the histogram color

gram count source data and

histogram to be done, either

n the screen in divisions

rns the source waveform

the number of waveforms used in

Horizontal Command Group

You use the commands from the Horizontal Command Group to control the timebases of the instrument. You can use these commands to do the following:

CSA/TDS8000 Series Programmer Manual 2-23

Command Groups

Set the scale (t

ime per division) of the Main, Mag1, and Mag2 timebases.

Set the record lengths for the Main, Mag1, and Mag2 timebases.

Get the time of ﬁrst point and time of last point for the Main, Mag1, and Mag2 timebases.

Get the sample resolution of the Ma in, Mag1, and Mag2 timebases.

Set the horizontal position for the Main, Mag1, and Mag2 timebases.

Set the horizontal reference for the Main, Mag1, and Mag2 timebases.

Enable or disable the acquisition and display of the Mag1 and Mag2 timebases.

Set the timebase mode.

Set timebase units to seconds, bits, or distance.

Set the Dielectric constant and propagation velocity.

Select a communication standard, such as OC12, that automatically sets the associated bit rate.

Adjust the external 10 MHz reference frequency to ensure that the timebase locks.

Set the parameters for FrameScan mode, and turn the mode on or off.

Get the screen resolution of the Main, Mag1, and Mag2 timebases.

Get all the horizontal settings.

Command

AUTOSet:HORizontal Sets or returns the status for the horizontal

HORizontal?

HORizontal:BITS:BITRate Sets or returns the bit rate of the timebase

HORizontal:BITS:STANdard Sets or returns the communication standard

HORizontal:DISTance:DIELectric Sets or returns the dielectric constant

HORizontal:DISTance:PVELocity Sets or returns the propagation velocity

HORizontal:EXT10MHZref:FREQ Sets or returns the external horizontal

HORizontal:FRAMescan:AUTOPosition Sets or returns the adjustment for timing

HORizontal:FRAMescan:RESET Resets FrameScan acquisition

HORizontal:FRAMescan:SCANBits Sets or returns the number of bits in frame to

HORizontal:FRAMescan:STARTBit Sets or returns the bit number of ﬁrst bit

Description

Autoset options

Returns all horizontal settings

(or NO Ne) for the bit r ate

reference

skew between data input and trigger input in FrameScan acquisition mode

scan in FrameScan acquisition mode

scanned in FrameScan acquisition mode

2-24 CSA/TDS8000 Series Programmer Manual

Command Groups

Command

HORizontal:FRAMescan:STATE Sets or returns the FrameScan acquisition

HORizontal:MAGnify<x>?

HORizontal:MAGnify<x>:POSition Sets or returns the horizontal position for

HORizontal:

HORizontal:MAGnify<x>:REFPoint Sets or returns the Mag<x> timebase

HORizontal:MAGnify<x>:RESolution?

HORizontal:MAGnify<x>:SCAle Sets or returns the Mag<x> timebase time

HORizontal

HORizontal:MAGnify<x>:TOLPoint? Returns the Mag<x> timebase time of last

HORizontal:MAGnify<x>:VIEW Sets or returns the Mag<x> timebase view

HORizonta

HORizontal:MAIn:POSition Sets or returns the horizontal position for the

HORizontal:MAIn:RECordlength Sets or returns the main timebase record

HORizon

HORizontal:MAIn:RESolution?

HORizontal:MAIn:SCAle Sets or returns the m ain timebase time per

HORizontal:MAIn:TOFPoint? Returns the main timebase time of ﬁrst point

HORizontal:MAIn:TOLPoint? Returns the main timebase time of last point

HORizontal:MATH<x>:MAGnify<x>: POSiti

HORizo RECordlength?

HORizontal:MATH<x>:MAGnify<x>: RESolution?

HORizontal:MATH<x>:MAGnify<x>:SCAle?

HORizontal:MATH<x>:MAGnify<x>: TOFPo

MAGnify<x>:RECordlength

:MAGnify<x>:TOFPoint?

l:MAIn?

tal:MAIn:REFPoint

on?

ntal:MATH<x>:MAGnify<x>:

int?

Description

mode on or off

Returns all Mag<x> timebase settings

Mag<x> timeb

Sets or retur length

reference point in percent

Returns the Mag<x> timebase acquisition resolution

per divisio

Returns the point

point

on or off

Returns th time base

main timebase

length

Sets or r position in percent of record

Returns resolution

division

Returns the Math<x>"Acquisition" horizontal position for Mag<x> timebase

Returns the Math<x> Mag<x> timebase record

Return acquisition resolution

Returns the Math<x> Mag<x> timebase time per division

Returns the Math<x> Mag<x> timebase time of ﬁrst point

ase

ns the Mag<x> timebase record

Mag<x> timebase time of ﬁrst

e time per division of the main

eturns the main timebase reference

the main timebase acquisition

length

s the Math<x> Mag<x> timebase

CSA/TDS8000 Series Programmer Manual 2-25

Command Groups

Command

HORizontal:MATH<x>:MAGnify<x>: TOLPoint?

HORizontal:MATH<x>:MAIn:POSition? Returns the Math<x> horizontal position for

HORizontal:

HORizontal:MATH<x>:MAIn:TOLPoint? Returns the Math<x> main timebase time of

HORizontal:REF<x>:MAGnify<x>:POSition? Returns the Reference<x> "Acquisition"

HORizonta RECordlength?

HORizontal:REF<x>:MAGnify<x>: RESolution?

HORizontal:REF<x>:MAGnify<x>:SCAle? Returns the Reference<x> Mag<x> timebase

HORizont TOFPoint?

HORizontal:REF<x>:MAGnify<x>: TOLPoint?

HORizontal:REF<x>:MAIn:POSition? Returns the Reference<x> "Acquisition"

HORizon

HORizontal:REF<x>:MAIn:REFPoint? Returns the Reference<x> main timebase

HORizontal:REF<x>:MAIn:RESolution? Returns the Reference<x> main timebase

HORizo

HORizontal:REF<x>:MAIn:TOFPoint? Returns the Reference<x> main timebase

HORizontal:REF<x>:MAIn:TOLPoint? Returns the Reference<x> main timebase

MATH<x>:MAIn:RECordlength?

MATH<x>:MAIn:REFPoint?

MATH<x>:MAIn:RESolution?

MATH<x>:MAIn:SCAle?

MATH<x>:MAIn:TOFPoint?

l:REF<x>:MAGnify<x>:

al:REF<x>:MAGnify<x>:

tal:REF<x>:MAIn:RECordlength?

ntal:REF<x>:MAIn:SCAle?

Description

Returns the Mat of last point

main timebase

Returns the Math<x> main timebase record length

Returns the Math<x> main timebase reference po

Returns the Math<x> main timebase acquisition

Returns the Math<x> main timebase time per division

Returns the M ﬁrst point

last point

horizontal

Returns th record length

Returns the Reference<x> Mag<x> timebase screen resolution

time per d

Returns t time of ﬁrst point

Returns the Reference<x> Mag<x> timebase time of last point

tal position for main timebase

horizon

Returns record length

reference position in percent of record

resolution

screen

s the Reference<x> main timebase

Return time per division

time of ﬁrst point

f last point

time o

h<x> Mag<x> timebase time

sition in percent of record

resolution

ath<x> main timebase time of

position for Mag<x> timebase

e Reference<x> Mag<x> timebase

ivision

he Reference<x> Mag<x> timebase

the Reference<x> main timebase

2-26 CSA/TDS8000 Series Programmer Manual

Command Groups

Mask Command

Group

Command

HORizontal:TBMode Sets or returns the timebase mode

HORizontal:UNIts Sets or returns the horizontal units

Description

Mask commands control standard masks, user-deﬁned masks, and testing a gainst masks. A mask is a set of polygonal regions on the screen. Every vertical line on the screen i

ntersects the polygon in zero, one, or two places, but never in more than two places. (A vertical line that intersects a vertical mask border is counted.) You have to break up more complicated polygons into two s eparate masks. Unlike limit testing, the inside of a mask is the region where waveform data would not normally fall. A telecommunications standard requires up to eight of these masks. Pulse standards always have two masks. Standards with eye patterns usually have thre

e masks, but some have four.

You use the commands in the Mask Command Group to do the following:

Specify the waveform source to test and the mask to use.

Specify whether to use, and the size of, mask margins, which allow you to shrink or expand an existing set of polygons by a speciﬁed percentage.

Specify whether to display a readout of hits and the mask on screen. Options also exist for autosetting the incoming waveforms to m atch the mask you choose.

Select industry-standard masks that support a variety of electrical and optical communication standards.

Deﬁne and edit your own custom m ask; create an entirely new mask, or use a standard mask as a starting reference, and edit it to meet your needs.

Enable, disable, or reset the mask counts. Once you turn on mask counting, it remains on until you explicitly turn it off.

Set the color for the mask polygon.

ription

Command

MASK?

MASK:AUTOSet:MODe Sets or returns the mask autoset mode.

Desc

rn all mask parameters

Retu

If AUTO is set, a mask autoset will

omatically be done after a standard mask

aut is selected; if MANual is set, mask autoset for a standard mask runs only if the user

sses the AUTOSET button or sends the

pre AUTOSet EXECute command.

CSA/TDS8000 Series Programmer Manual 2-27

Command Groups

Command

MASK:AUTOSet:HILow:METHod Sets or returns the method, Mean or Mode,

MASK:COLOr Sets or return

MASK:COUNt Clear mask co

MASK:COUNt:

MASK:COUNt:STATE Sets or returns the mask counting

MASK:COUNt:TOTal? Returns the sum of all hits in all mask

MASK:COUNt:WAVeforms? Returns the total number of mask hits

MASK:DISplay Sets or returns whether or not deﬁned masks

MASK:MARg

MASK:MASK

MASK:MASK<x>:POINTSPcnt Sets or returns the points in mask<x>, in

MASK:SOU

MASK:STANdard Sets or returns the standard communication

MASK:WF

SAMPles?

in:PERCent

in:STATE

<x>

<x>:COUNt?

<x>:NR_Pt?

<x>:POInts

rce

MDB:STATE

Description

that a Mask Autoset uses to determine the High and Low va

restart counting

Returns all the values for the mask count parameters

Returns the t that have gone into mask counting

segments

are displa

Sets or ret

Delete all points in mask<x>

Returns al

Returns nu

Returns th waveform coordinates

percentage coordinates, with 0,0 upper left and 100,1

Sets or re timebase will be compared against the mask(s) when counting is turned on

mask

Returns used as a source for mask counting

whether a waveform database is

lues

sthemaskcolor

unts and source data, and

otal number of sample points

yed on the screen

urns the mask margin in percent

urns the mask margins state

l mask<x>parameters

mber of hits in mask<x>

mber of points in mask<x>

e points in the speciﬁed mask in

00 lower right

turns which waveform and

Math Co

mmand Group

You use the commands in the Math Command Group to create and deﬁne math waveforms. You can deﬁne and display up to eight math waveforms

taneously. You use the available math functions, such as integration,

simul differentiation, square root, and natural logs, to deﬁne your math waveform.

2-28 CSA/TDS8000 Series Programmer Manual

Command Groups

Math expressio

ns can be simple, such as C1, which speciﬁes that a waveform should show the signal source of channel 1 with no mathematical computation. Math expressions can also be complex, consisting of 100 plus characters and comprising many sources, functions, and operators.

Math expressions require at least one source waveform. When the acquisition of a live waveform stops, so does the acquisition of any math waveforms using that waveform as a source. When a live waveform update or reference waveform is altered, math waveforms containing those waveforms as sources are also updated to reﬂect t

he changes. Also, sources must exist, but do not need to be displayed to

be used in and to update math waveforms.

Command

MATH<x >?

MATH<x>:DEFine

MATH<x>:FILTer:MODe Sets or returns the ﬁlter mode for the

MATH<x>:FILTer:RISetime Sets or returns the risetime (bandwidth) of

MATH<x>:NUMavg

MATH<x>:POSition Sets or returns the math<x> vertical position

MATH<x >:SCAle Sets or returns the math<x> vertical scale

MATH<x>:UNIts?

MATH<x>:WFMLabel

Description

Returns math<x> settings

Sets or returns the math<x> deﬁnition

math<x> w aveform

the m ath ﬁlter function

Sets or returns the number of waveforms to average for a math waveform for the math<x> w aveform

(per div)

Returns math units

Sets or returns the label associated with the math<x> w aveform

Measurement Command Group

You use the commands in the Measurement Command Group to control the automated measurement system. Up to eight automated measurements can be displayed on the screen. In the commands, these eight measurement slots are named MEAS<x>, where <x> can be 1 through 8. You use the commands to do the following:

CSA/TDS8000 Series Programmer Manual 2-29

Command Groups

Obtain measure

ment results.

Set and query measurement parameters. You can assign most parameters differently for each source of a measurement slot.

Select the measurement slot (1 through 8), and turn it on and off.

Select the waveform (Source1) to be measured (or the Source1 and Source2 waveforms for delay and other two-waveform measurements).

View the value of the currently selected measurement.

Clear the selected measurement and its statistics.

Select whether the measurement displays annotations (indicating which portion of the waveform is being measured as well as reference levels for that measurement) and statistics.

Select whether or not statistics on measurements are computed.

Perform measurements on waveform databases.

Set the signal type for waveform database measurements (Pulse, Eye, or RZ).

Clear the waveform database.

Deﬁne measurement regions using gates.

Set slope and direction for delay measurements.

Select a tracking method (algorithm) that is used to track the high and low value of the waveform.

Enable tracking of the high and low values of the waveform automatically, and specify a high and/or low value (when tracking is disabled).

Select a reference level calculation method.

Set Hi, Mid, and Low reference values, either as percentages of the high-low range or as absolute values.

Set measurement parameters to default values.

Command

MEASUrement?

MEASUrement:ALL:VALue?

MEASUrement:ANNOtations:STATE Sets or returns whether the measurement

MEASUrement:LIST Sets or returns a list of deﬁned measurements

MEASUrement:LISTValue? Returns the values of the measurements in

Description

Returns all measurement parameters

Returns all measurement values

shows annotations

for which you want values returned

the list created with the MEASUrement:LIST command

2-30 CSA/TDS8000 Series Programmer Manual

Command Groups

Command

MEASUrement:MEAS<x>:ALL? Returns all measurement statistics values for

MEASUrement:MEAS<x>:EYEWindow Sets or returns the percent of interval

MEASUrement:MEAS<x>:GATing:STATE Sets or returns the gating state (on or o ff) for

MEASUrement:MEAS<x>:JITter Sets or returns the jitter-level crossing for

MEASUremen

MEASUrement:MEAS<x>:REFLevel<x>? Returns all reference level <x> settings for

MEASUrement:MEAS<x>:REFLevel<x>: ABSolute:

MEASUrem ABSolute:LOW

MEASUrement:MEAS<x>:REFLevel<x>: ABSolute:MID

MEASUrement:MEAS<x>:REFLevel<x>: METHod

MEASUrement:MEAS<x>:REFLevel<x>: RELative:HIGH

MEASUrement:MEAS<x>:REFLevel<x>: RELativ

MEASUr RELative:MID

MEASUrement:MEAS<x>:SETDefault Sets all measurement values to the

MEASUrement:MEAS<x>:SOUrce<x>: EDGE?

MEASU EDGE:DIRection

MEASUrement:MEAS<x>:SOUrce<x>: EDGE:

t:MEAS<x>:MAXimum?

t:MEAS<x>:MEAN?

t:MEAS<x>:MINimum?

t:MEAS<x>:NOISe

HIGH

ent:MEAS<x>:REFLevel<x>:

e:LOW

ement:MEAS<x>:REFLevel<x>:

rement:MEAS<x>:SOUrce<x>:

SLOPe

Description

the measurement speciﬁed by x

between two ey middle of the region

the measurement speciﬁed by x

measurement

Returns measurement statistics maximum value for me

Returns measurement statistics mean value for measure

Returns m easurement statistics minimum value for me

Sets or retu on the high or low level of the signal

measurement slot <x>

Sets or returns the top reference level in absolute w

Sets or re absolute w aveform units

Sets or returns the m id reference level in absolute w aveform units

Sets or returns the method to calculate referenc range or in absolute vertical units

Sets or returns the high reference level as a % of the high-low range

Sets or returns the low reference level as a %oftheh

Sets or % of the high-low range

instrument default settings

:EDGE? Returns all edge settings for the

ed measurement

speciﬁ

r returns the direction (forward or

Sets o backward) that the instrument uses to look for the rising or falling edge

Sets or returns the slope of the edges used

ay time measurements

in del

e crossings centered on the

asurement <x>

ment <x>

asurement <x>

rns whether noise is measured

aveform units

turns the low reference level in

e levels, either as a % of the high-low

igh-low range

returns the mid reference level as a

CSA/TDS8000 Series Programmer Manual 2-31

Command Groups

Command

MEASUrement:MEAS<x>:SOUrce<x>: GATE<x>?

MEASUrement:MEAS<x>:SOUrce<x>: GATE<x>:PCTP

MEASUrement GATE<x>:POS

MEASUrement:MEAS<x>:SOUrce<x>: HILow?

MEASUrement:MEAS<x>:SOUrce<x>: HILow:METH

MEASUremen HILow:TRACk:HIGH:ENABle

MEASUrement:MEAS<x>:SOUrce<x>: HILow:TRACk:HIGH:VALue

MEASUreme HILow:TRACk:LOW:ENABle

MEASUrement:MEAS<x>:SOUrce<x>: HILow:TRACk:LOW:VALue

MEASUrem

MEASUrement:MEAS<x>:SOUrce<x>: WFMDB:S

MEASUrement:MEAS<x>:SOUrce<x>: WFMDB:STATE

MEASUrement:MEAS<x>:STATE Sets or returns the display of measurement

MEASUr

MEASUrement:MEAS<x>:STDdev?

MEASUrement:MEAS<x>:TYPe Sets or returns the type of measurement for

MEASUrement:MEAS<x>:UNIts? Returns the units for the speciﬁed

rement:MEAS<x>:VALue?

MEASU

MEASUrement:STATIstics:ENABle Sets or returns whether or not measurement

MEASUrement:STATIstics:WEIghting Sets o r returns measurement statistics

:MEAS<x>:SOUrce<x>:

t:MEAS<x>:SOUrce<x>:

nt:MEAS<x>:SOUrce<x>:

ent:MEAS<x>:SOUrce<x>:WFM

IGType

ement:MEAS<x>:STATIstics:CLEar

Description

Returns the speciﬁed gate<x> settings for measurement<x>

Sets or returns the gate endpoint in percent

Sets or retur units

Returns all high / low values for measurement<x>

Sets or returns the method for calculating high / low le

Sets or retu off)

Sets or returns the high value used to calculate a speciﬁed measurement on a speciﬁed s

Sets or ret off)

Sets or returns the low value used to calculate a speciﬁed measurement on a speciﬁed

Sets or re waveform, and, optionally, the timebase on which measurements are taken

Sets or returns the signal type of the wavefor source

Sets or returns the state of Use WfmDb for measurement source (on or off)

(on or o

Clears measurement<x>

Return deviation value for measurement<x>

the speciﬁed measurement

measu

Retur speciﬁed measurement

statistics are enabled (on or off)

weig

ns the gate endpoint in waveform

vels

rns the tracking high level (on or

ource waveform

urns the tracking low level (on or

source waveform

turns the measurement source

m database for the measurement

ff)

measurement statistics for

s measurement statistics standard

rement

ns the measurement value for the

hting for all measurements

2-32 CSA/TDS8000 Series Programmer Manual

Command Groups

Miscellaneou

s Command Group

Miscellaneous commands do not ﬁt into other categories. Several commands and queries are common to all 488.2–1987 devices on the GPIB bus. The 488.2–1987 standard deﬁ (*) character.

Command

APPlication:ACTivate Launches the available optional software

AUTOSet

AUTOSet:STOP Stops autoset

AUTOSet:TYPE Sets or returns the autoset mode (Edge,

AUTOSet:UNDO

DATE

FACtory Sets instrument to factory defaults

FILESystem:READFile? Outputs the speciﬁed ﬁle to the GPIB port

HEADer

*IDN? Returns identiﬁcation string

LOCk Sets or returns the front panel lock state

*LRN?

*PSC Sets the power-on clear ﬂag. When false,

SET?

SYNC:TIMEOUT Sets or returns the default synchronization

TIMe

UNLock

VERBose

nes these commands. The common commands begin with an asterisk

Description

applications

Runs autoset

Period, NRZ Eye, RZ Eye, or T DR)

Undoes autoset

Sets or returns the date (yyyy-mm-dd)

with maximum ﬁle size of 10 Mb

Sets or returns the Response Header Enable State

Returns "complete" instrument settings

registers retain their status when power is restored; when true, registers will be cleared when power is restored

Tek Learn Mode

timeout for commands that rely upon data production from the instrument

Sets or returns the time displayed by the instrument

Unlocks the front panel

Returns the front panel lock state

Sets or returns the response header abbreviation control command

Phase Reference Command Group

You use the commands in the Phase Reference Command Group to switch to the Phase Correction timebase. This timebase, available only in 8200 Series

CSA/TDS8000 Series Programmer Manual 2-33

Command Groups

instruments un

der the conditions described below, supports ultra-low trigger jitter

(typical is £ 200 fsec RMS), improving the ﬁdelity of acquired signals.

Earlier 8000 s

eries instruments do not support the 82A04 Phase Reference Module, regardless of the product software version installed. Therefore, the Phase Reference commands can be used only when the instrument is in use:

is either a CSA8200 Communications Analyzer or a TDS8200 Digital Oscilloscope, and...

has the 82A04 Phase Reference Module installed in one of the small compartments of its front-panel.

If either of the above requirements is not met, the Phase Reference commands are not supported.

The 82A04 module is available in two conﬁgurations: standard and with Option 60G. You can ﬁnd 82A04 information by clicking the Help button in the Phase Ref Setup dialog box of instruments running product software versions 2.1 and later.

Command

PHAseref:CHAR Initiates a Phase Reference Characterization

PHAseref:CH<x>:FREQuency Sets or returns the Phase Reference

PHAseref:CH<x>:RANge? Returns the Phase Reference module

PHAseref:CH<x>:STAtus? Returns the current Phase Reference

PHAseref:MODe Sets or returns the Phase Correction Mode:

PHAseref:SOUrce Sets or returns the Phase Reference source:

Description

Frequency

guaranteed frequency range

Characterization status

OFF, FREerun, or TRIG ger

C1 & C2, C3 & C4, C5 & C6, or C7 & C8

Save and Recall Command Group

You use the commands in the Save and Recall Command Group to store and retrieve internal waveforms and settings. When you save a setup, you save all the settings of the instrument. When you recall a saved setting, the instrument restores itself to the state that it was in when you originally saved that setting.

ription

Command

DELEte:WAVEform Deletes (one or all) of the stored reference

FACtory Resets the instrument to factory default

All:SETUp

REC

2-34 CSA/TDS8000 Series Programmer Manual

Desc

waveforms from memory

tings

set

Recalls saved instrument settings

Command Groups

Command

RECAll:WAVEform Recalls a stored w aveform into reference

SAVe:SETUp Saves the current instrument settings to a

SAVe:WAVEfo

Status and Error Command Group

YouusethecommandsintheStatusandErrorcommandGrouptodeterminethe status of the instrument and control events. Several commands and queries used with the instrument are common to all devices on the GPIB bus. The IEEE Std

488.2–1987 deﬁnes these commands and queries. The common commands begin with an asterisk (*) character.

Command

*CLS Clears status

*ESE Sets or returns the standard Event Status

*ESR? Sets or returns the standard Event Status

*OPC Sets OPC event when all pending operations

*OPT? Returns a list of installed options

*PSC Sets or returns the power on status ﬂag

*RST Resets the i nstrument to factory default

*SRE Sets or returns the bits in the Service

*STB? Returns the contents of the Status Byte

*WAI Prevents the instrument from executing

ALLEv?

BUSY?

DESE Sets or returns the bits in the Device Event

EVENT? Returns event code from the event queue

EVMsg? Returns event code, message from the event

Description

location

speciﬁed loca

Saves wavefo

Description

Enable Register

are ﬁnished

Returns "1" when all current operations complete

settings

Request Enable Register

further commands until all pending operations ﬁnish

Returns all events

Returns instrument status

Status Enable Register

queue

tion

rm in reference or ﬁle

CSA/TDS8000 Series Programmer Manual 2-35

Command Groups

Command

EVQty? Returns number of events in the event queue

ID? Returns identifying information about the

System Command Group

You u se the commands in the System Command Group to obtain information about your system, such as the serial numbers of your instrument, installed modules, and the attached probes, the hardware version of the acquisition and processor circuit boards, and the gains and impedances of attached probes.

Command

SYSTem:PROPerties:ACQHWver? Returns hardware version of Acquisition

SYSTem:PROPerties:CH<x>:BANDwidth? Returns a list of available bandwidth

SYSTem:PROPerties:CH<x>:CAPacitance?

SYSTem:PROPerties:CH<x>:CLKRec? Returns list of available clock recovery

SYSTem:PROPerties:CH<x>:CLKUser? Returns the allowable range of user

SYSTem:PROPerties:CH<x>:DYNamic?

SYSTem:PROPerties:CH<x>:EXTender? Returns extender cable type of the speciﬁed

SYSTem:PROPerties:CH<x>:FILTer? Returns a list of available ﬁlter selections for

SYSTem:PROPerties:CH<x>:IMPedance?

SYSTem:PROPerties:CH<x>:MODElnum?

SYSTem:PROPerties:CH<x>:NONDestruct?

SYSTem:PROPerties:CH<x>:OPERating?

SYSTem:PROPerties:CH<x>:PRAnge? Queries the Phase Reference module

Description

instrument and its ﬁrmware

Description

circuit board

selections for the speciﬁed channel (optical modules); for electrical modules, returns bandwidth characteristic if applicable

Where applicable, returns sampling module load capacitance of the speciﬁed channel

selections for the speciﬁed channel

clock-recovery rates for the module containing CH<x>

Returns sampling module lower and upper dynamic range limits of the speciﬁed channel

channel

the s peciﬁed channel

Where applicable, returns sampling module input impedance of the speciﬁed channel

Returns sampling module model number per speciﬁed channel

Where applicable, returns sampling module lower and upper maximum nondestructive range of the speciﬁed channel

Where applicable, returns sampling module lower and upper operating range of speciﬁed channel

frequency range, returning it as part of the system properties query results

2-36 CSA/TDS8000 Series Programmer Manual

Command Groups

Command

SYSTem:PROPerties:CH<x>:PRObe: DYNamic?

SYSTem:PROPerties:CH<x>:PRObe: IMPedance?

SYSTem:PROP MODElnum?

SYSTem:PROPerties:CH<x>:PRObe: SCAle?

SYSTem:PROPerties:CH<x>:PRObe: SERialnum?

SYSTem:PRO CLKRAnge?

SYSTem:PROPerties:CH<x>:PSYNc: PLENRAnge?

SYSTem:PROPerties:CH<x>:RISetime?

SYSTem:PR

SYSTem:PROPerties:CH<x>:TEKPVersion? Returns sampling module TEKPROBE

SYSTem:PROPerties:CH<x>:WLENgth? Returns list of available wavelength

SYSTem:P TEKPVersion?

SYSTem:PROPerties:MAInframe:KEY? Returns mainframe option key

SYSTem:PROPerties:MAInframe: MODElnum?

SYSTem:PROPerties:MAInframe:

num?

SERial

SYSTem SWVersion?

SYSTem:PROPerties:MAInframe: UNIQueid?

SYSTem:PROPerties:ONTime? Returns on time for current power up in hours

SYSTem:PROPerties:POWerups? Returns number of power ups

SYSTem:PROPerties:PROCHWver? Returns hardware version of Processor

m:PROPerties:TOTalontime?

SYSTe

erties:CH<x>:PRObe:

Perties:CH<x>:PSYNc:

OPerties:CH<x>:SERialnum?

OPerties:CH<x>:TEKPDriver?

ROPerties:GROup<x>:

:PROPerties:MAInframe:

Description

Where applicab and upper dynamic range limits of the speciﬁed channel

Returns impedance of probe attached to speciﬁed chan

Returns prob attached to the speciﬁed channel

Returns the probe scale factor of the probe attached to the speciﬁed channel

Returns serial number of probe attached to speciﬁed ch

Returns the module in the speciﬁed channel

Returns the pattern length range of a pattern sync module in the speciﬁed channel

Where applicable, returns the sampling module risetime characteristic of the speciﬁed c

Returns sampling module serial

Returns sa revision number of speciﬁ ed channel

version number per channel

selectio

Returns t TEKPROBE controller

Returns mainframe model number

Returns mainframe serial number

s mainframe software version number

Return

Returns mainframe id number

it board

circu

Returns the total accumulated on time in

(across all power cycles)

hours

le, returns the probe lower

nel

e model number of the probe

annel

clock range of a pattern sync

hannel

mpling module TEKPROBE driver

ns for the speciﬁed channel

he version number of the speciﬁed

CSA/TDS8000 Series Programmer Manual 2-37

Command Groups

TDR Command Group

Command

SYSTem:PROPerties:TRIGProbe:PSYNc: CLKRAnge?

SYSTem:PROPe PLENRAnge?

You use the c

rties:TRIGProbe:PSYNc:

ommands in the TDR Command Group to do the following:

Description

Returns the clock range of a pattern sync module connected to TRIGGER PROBE POWER

Returns the pa pattern sync module connected to TRIGGER PROBE POWER

ttern length range of a

Specify TDR step channels (C1 through C8), and select the polarity for each.

Select TDR steps.

Enable and disable acquisition.

Set the TDR internal clock rate.

Preset any TDR channel.

Set the cha

nnel TDR deskew.

Select the channel TDR units.

Obtain all the TDR parameters.

Preset TDR channel pairs for differential TDR measurements.

Position the TDR Incident Edge.

Command

AUTOSet:

TDR?

TDR:CH<x>:DIFfpreset Sets the instrument to predeﬁned differential

TDR:CH<

TDR:CH<x>:STEP:DESkew Sets or returns the speciﬁed channel TDR

TDR:CH<x>:STEP:POLarity Sets or returns the TDR step polarity for the

TDR:CH

TDR:INCident

x>:PRESET

<x>:STEP:STATE

Description

Sets or re the TDR autoset (on or off)

Returns a

TDR settings for the speciﬁed TDR channel pair

Sets the settings for the speciﬁed TDR channel

deskew (if valid type head in channel)

speciﬁ

Sets or is on or off for the speciﬁed channel

turns the Incident edge option for

ll TDR parameters

instrument to predeﬁned TDR

ed channel

returns whether the TDR generator

2-38 CSA/TDS8000 Series Programmer Manual

Command Groups

Command

TDR:CH<x>:UNIts Sets or returns the TDR units for the speciﬁed

TDR:INTRate

Trigger Command Group

You use the c ommands in the Trigger Command Group to control all aspects of triggering for the instrument. You use the commands to do the following:

Description

channel

Sets or returns the TDR (Internal Clock) rate; same as TRIG:I

NTRATE

Set the trigger source for triggering acquisition. You can select an external event (External Direct or External Prescaler), the internal clock, a clock recovered from the input for the trigger source, or pattern sync, depending on your application.

Set the internal clock rate.

Set the trigger mode to determine whether, in the loss or absence of triggers, the instrument auto triggers (Auto mode) or stops acquiring (Normal mode).

Set the signal level and slope (rising or falling) of the trigger. Slope is ignored for internal clock sources.

Set the trigger level to 50% of the trigger signal amplitude.

Set trigger holdoff, which is the time the instrument waits before arming the trigger system to accept triggers. Holdoff can help achieve stable triggering.

Set enhanced triggering (high frequency triggering, and gated triggering) for improved triggering in speciﬁc instances.

Obtain all trigger parameters.

Obtain the trigger system status (triggered, auto mode, or FrameScan).

Command

AUTOSet:TRIGger Sets whether the trigger Autoset options are

TRIGger?

TRIGger:AUTOSync

TRIGger:AUTOSync:DATARate Sets or returns the AutoSync option for data

TRIGger:AUTOSync:DCRAtio Sets or returns the AutoSync option for

Description

included when autoset executes

Returns the status for the trigger Autoset options

Returns all trigger parameters

Autosyncs to the currently selected waveform, those pattern sync settings that have their AutoSync options set

rate selection (on or off)

data-to-clock ratio selection (on or off)

CSA/TDS8000 Series Programmer Manual 2-39

Command Groups

Command

TRIGger:AUTOSync:PLENgth Sets or returns the AutoS ync option for

TRIGger:CH<x>:CLKRec:LIST? Returns a list of available clock recovery

TRIGger:CH<

TRIGger:CH<x>:CLKRec:USEr Sets a user (custom) clock recovery rate

TRIGger:CH

TRIGger:CLKRec:SOUrce Sets or returns the clock recovery channel

TRIGger:GATEd Sets or returns the gated triggering (on or off)

TRIGger:H

TRIGger:I

TRIGger:

TRIGger:PSYNc:CH<x>:DCRAtio Sets or r eturns the DC-to-Clock ratio of the

TRIGger:PSYNc:CH<x>:PLENgth Sets or returns the pattern length for the

TRIGge

TRIGger:PSYNc:SOUrce Sets or returns the pattern sync channel

TRIGger:PSYNc:TRIGProbe:DATARate Sets or returns the pattern sync data rate of

x>:CLKRec:RANge?

<x>:CLKRec:VALue

IFreq

OLDoff

NTRate

LEVel

METAReject

MODe

PSYNc:CH<x>:DATARate

r:PSYNc:RBIT

Description

pattern length selection (on or off)

selections pe

Returns the a recovery rates for the module containing CH<x>

to be a speciﬁ range, which is module-dependent

Returns the rate currently deﬁned as the user clock r

Sets or retu the s peciﬁed channel

source

Requires O

Sets or ret

Sets or re

Sets or re ﬁlter

This command has no function in product software

Sets or re

Sets or re PatternSync Trigger module speciﬁ ed by CH<x>

Pattern CH<x>

PatternSync Trigger module speciﬁ ed by CH<x>

Sets or PatternSync Trigger module

source

the pr

r channel

llowable range of user clock

ed value within an allowable

ecovery rate

rns the clock recovery v alue for

ption GT

urns the high-frequency hysteresis

urns the trigger holdoff time

urns the internal clock rate

turns the trigger level

turns the metastability rejection

versions 2.4 or higher

turns the trigger mode

turns the data rate of the

Sync Trigger module speciﬁ ed by

returns the relative trigger bit of the

obe connector

2-40 CSA/TDS8000 Series Programmer Manual

Command Groups

Vertical Co

Command

TRIGger:PSYNc:TRIGProbe:DCRAtio Sets or returns the DC-to-Clock ratio of the

TRIGger:PSYNc:TRIGProbe:PLENgth Sets or returns the pattern length for the

TRIGger:SET

TRIGger:SLOpe Sets or returns the trigger slope

TRIGger:SOUrce Sets or returns the trigger source

TRIGger:STATE?

mmand Group

You use the commands in the Vertical Command Group to control the vertical setup of all live (channel) waveforms for acquisition and to control the display of channel, r up the vertical parameters for either electrical or optical signals, depending on the sampling module in use.

You can use the commands in this group to do the following:

Description

probe connector

ger level to 50% of the applied

rigger system status

Level

probe connect

Sets the trig signal

Returns the t

eference, and math waveforms. This group contains commands to set

CSA/TDS8000 Series Programmer Manual 2-41

Command Groups

Enable or disab

le the display of any channel, math, or reference waveform.

Set which waveform is affected by the front-panel controls.

Set the vertical scale for each channel.

Set the vertical position. The vertical position affects only the display position of a channel, math, or reference waveform.

Set the offset value to shift the vertical acquisition window to match the waveform data that you want to acquire (affects only channels).

Set deskew values to compensate for delay between channels.

Set the units for channel waveforms. If you set this value to Auto, the instrument automatically selects the units. If you set this value to any setting other than Auto (Volt, Amp, or Watt), the instrument will apply these units to the vertical axis.

Set the external attenuation factor (as a multiplier or as a dB value) o n an acquisition channel waveform to a value matching the amount of attenuation applied externally, before the signal enters the sampling head or probe tip input.

Set the wavelength to match the wavelength of the optical signal you are using.

Set the type of ﬁltering, if any, you want performed on the selected optical channel.

Specify bandwidth for use on the selected optical channel.

Command

AUTOSet:VERTical Sets or returns whether the vertical Autoset

CH<x>?

CH<x>:BANdwidth:LIST? Returns the bandwidths available for the

CH<x>:BANdwidth:VALue Sets or returns the bandwidth for the

CH<x>:DESkew Sets or returns the deskew time

CH<x>:EXTAtten:MODe Sets or returns the external attenuation mode

CH<x>:EXTAtten:VALue Sets or returns the external attenuation

CH<x>:FILTer:LIST? Returns ﬁlter list for the speciﬁed channel

CH<x>:FILTer:VALue Sets the hardware ﬁlter for the speciﬁed

CH<x>:OFFSet Sets or returns the channel offset

CH<x>:POSition Sets or returns the channel vertical position

CH<x>:SCAle Sets or returns the channel vertical scale

Description

options are included when Autoset executes

Returns the vertical parameters

speciﬁed channel

factor (as a multiple)

channel

(per div)

2-42 CSA/TDS8000 Series Programmer Manual

Command Groups

Command

CH<x>:UNIts Sets o r returns the channel vertical units

CH<x>:WFMLabel Sets or returns the label associated with the

CH<x>:WLENgth:LIST? Returns the wavelengths available for the

CH<x>:WLENg

REF<x>:POSition Sets or returns the reference vertical position

REF<x>:SCAle Sets or returns the reference vertical scale

REF<x>:WFMLabel

SELect? Returns inf

SELect:CH<x> Sets or returns a waveform (on or off) (main

SELect:CO

SELect:MATH<x> Sets or returns a math waveform (on or off)

SELect:

th:VALue

NTROl

REF<x>

Description

speciﬁed channel waveform

speciﬁed cha

Sets or retur speciﬁed channel

(per div)

Sets or returns the label associated with the speciﬁed re

ON/OFF and which waveform is the selected waveform

timebase)

Sets the wa Note: NONE may be returned by *LRN?. If this is an argument, do nothing. Also, timebase

Returns the waveform and timebase selected for front-panel control

(main tim

Sets or r off) (main timebase)

nnel

ns the wavelength for the

ference waveform

ormation on which waveforms are

veform controlled by front panel.

is NOT optional

ebase)

eturns a reference w aveform (on or

Wavefo

rm Database Command Group

You use the commands in the Waveform Database Command group to view and set up a waveform database. A waveform database is a collection of sequentially

ed waveforms. Think of a waveform database as a three-dimensional array

acquir with a count dimension in addition to the usual vertical and horizontal dimensions. The count represents the number of times a speciﬁc waveform point has been acquired or generated. Waveform database accumulation is always a dot mode accumulation (that is, no interpolation or vectoring is performed).

Waveform database count values stored in the waveform database array are unit-less with respect to absolute user units (for example, volts or seconds). They are described by the attributes of the source waveform along with the overall

ensions of the array.

dim

CSA/TDS8000 Series Programmer Manual 2-43

Command Groups

The following a

re the dimensions of a waveform database:

Horizontal (columns). Value is 500, which is the maximum horizontal graticule view size.

Vertical (rows). Value is 402, which is the maximum vertical graticule view size in pixels, plus one row each for the overrange (OR) and the underrange (UR) counts for each column.

Count (weights or density). Value is 32 bits.

Use waveform databases for measurements, histogram calculations and display, mask testing, and generating a density-style graded display. If the source is a displayed waveform database, then the mask testing, histogram calculations, and measurements will use the waveform database.

You can use the commands in this group to do the following:

Set the source to which the waveform database is assigned.

Enable or disable the waveform database.

Set whether the waveform database is displayed.

Set the signal type of the waveform database (pulse or eye).

Set whether you want the waveform database drawn with color or intensity grading.

Set the display emphasis for the waveform database. The value you specify sets the range of counts you want emphasized. The lowest value, 0, emphasizes bins with low counts; the highest value, 100, emphasizes bins with high counts.

Invert the mapping function that applies colors and intensity to the waveform database to signiﬁcantly emphasize the least occurring pixels.

Clear the speciﬁed waveform database.

Obtain all the waveform database display parameters.

Obtain all the waveform database parameters.

Command

WFMDB? Returns all WfmDB parameters

WFMDB:DISPlay?

WFMDB:DISPlay:EMPHasis Sets or returns the WfmDB display emphasis

WFMDB:DISPlay:GRADing Sets or returns the WfmDB grading type

WFMDB:DISPlay:GRADMethod Sets or returns the WfmDB grading method

WFMDB:DISPlay:INVert Sets or returns the WfmDB grading inversion

WFMDB:WFMDB<x>? Returns WfmDB<x> parameters

Description

Returns wWmDB display parameters

to any one of four available methods

2-44 CSA/TDS8000 Series Programmer Manual

Command Groups

Command

WFMDB:WFMDB<x>:CLEar Deletes (clears) resource of speciﬁed

WFMDB:WFMDB<x>:DISPlay Sets or returns the WfmDB<x> displayed

WFMDB:WFMDB<x>:ENABle

WFMDB:WFMDB

WFMDB:WFMDB<x>:PERSistence:MODe Sets or returns the persistence mode (two

WFMDB:WFMD SAMPles?

WFMDB:WFMDB<x>:SOURce Sets or returns the WfmDB<x> source

<x>:PERSistence:COUNt

B<x>:PERSistence:

Waveform Transfer Command Group

Use the com waveform data points to and f rom the instrument. Waveform data points are a collection of values that deﬁne a waveform. One data value usually represents one data point in the waveform record. When working with envelope waveforms, each data value is either the minimum or the maximum of a min/max pair.

mands in the Waveform Transfer Command Group to transfer

Description

WfmDB

Sets or returns the speciﬁ ed waveform database

Sets or retur applied to WfmDB<x> when set to Variable Persistence mode

available)

Returns the for WfmDB<x> when using in Variable Persistence mode

ns the waveform count

that WfmDB<x> uses

samples count in effect

Data Formats

Before you transfer waveform data, you must specify the data format, record length, and waveform source.

Acquired waveform data uses 14 or more bits to represent each data point. The number of bits used depends on the acquisition mode speciﬁed when you acquired the data. Data acquired in SAMple or ENVElope mode uses 14 bits per waveform data point. Data acquired in AVERage mode uses up to 16 bits per point.

The instrument can transfer waveform data in either ASCII or binary format. You specify the format with the DATa:ENCdg command. The instrument uses signed,

e integers and ﬂoating point values; it does not support unsigned values.

4 byt

ASCII data is represented by signed integer or ﬂoating point values. An example

n ASCII waveform data string may look like this:

of a

:CURVE -509476864,-512163840,-511115264,-510918656,

6161536,-484179968,-117112832,207093760,

-51 322437120,351600640,409206784,468451328, 482934784,490668032,495517696,432668672, 482148352,483655680,493617152,495321088, 499843072,493420544,488964096,497221632,

…

CSA/TDS8000 Series Programmer Manual 2-45

Command Groups

Wavefor

m Data and Record

Lengths

ASCII will prod produced by binary format. However, ASCII may require more bytes to send the same values than it does with binary. This may reduce transmis sion speeds.

Binary data can be represented by signed integer or ﬂoating-point values. The deﬁned binary formats specify the order in which the bytes are transferred. The following are the four binary formats:

RIBinary speciﬁes signed integer data-point representation with the most signiﬁcant byte transferred ﬁrst.

SRIBinary is the same as RIBinary except that the byte order is reversed; the least signiﬁcant byte is transferred ﬁrst. This format is useful when transferring data to IBM-compatible PCs.

FPBinary speciﬁes ﬂoating-point data-point representation with the m ost signiﬁcant byte transferred ﬁrst.

SFPBinary is the same as RFBinary except that the byte order is reversed; the least signiﬁcant byte is transferred ﬁrst. This format is useful when transferring data to IBM-compatible PCs.

You can transfer multiple points for each waveform record. You can transfer a portion of the waveform or you can transfer the entire record. You can use the DATa:STARt and DATa:STOP commands to specify the ﬁrst and last data points of the w 250, 500, 1000, 2000, and 4000 samples.

aveform record. The instrument supports record lengths of 20, 50, 100,

uce more readable and more easily formatted output than that

Waveform Data Locations

d Memory Allocation

When t length of the destination waveform record. To specify the record length, use the WFMInpre:NR_Pt command. Next, specify the ﬁrst data point within the waveform record. For example , when you set DATa:STARt to 1, data points will be stored starting with the ﬁrst point in the record. The instrument will ignore the value set by DATa:STOP when reading in data. It will stop reading in data when the

When transferring data from the instrument, you must specify the ﬁrst and last dat the record length will always return the entire waveform.

The DATa:SOUrce and DATa:TIMebase commands specify the waveform source a can only transfer one waveform at a time.

W memory locations. You use the DATa:DESTination command to specify a reference memory location.

ransferring data into the instrument, you must ﬁrst specify the record

re is no more data to read, or when it has reached the speciﬁed record length.

a points in the waveform record. Setting DATa:STARt to 1 and DATa:STOP to

nd waveform timebase when transferring a waveform from the instrument. You

aveforms sent to the instrument are always stored in one of the eight reference

2-46 CSA/TDS8000 Series Programmer Manual

Command Groups

Waveform Preamble

Each waveform t

hat you transfer has an associated waveform preamble that contains information such as the horizontal scale, the vertical scale, and other settings in effect when the waveform was created. The values returned by the WFMOutpre query commands are set by the previous curve query. Therefore, to have a valid set of preamble and data, you must perform a CURVe? query followed by a WFMOutpre? query. Refer to the individual WFMInpre and WFMOutpre c

Command

CURVe The command format transfers waveform

DATa

DATa:DESTination Sets or returns the reference memory

DATa:ENCdg Sets or returns the format of the waveform

DATa:SOUrce Sets or returns the location of waveform data

DATa:STARt Sets or returns the starting data point in

DATa:STOP Sets or returns the ending data point in

WAVFrm? Returns W FMO u tpre? and CURVe? data

DATa:TIMebase

WFMInpre? Returns the waveform formatting data

WFMInpre:BIT_Nr? Returns the number of bits (width) per

WFMInpre:BN_Fmt

ommands for more information.

Description

data to the instrument (reference memory location speciﬁed by DATa:DESTination)

The query format transfers waveform data from instrument speciﬁed by the DATa:SOUrce command

Sets the format and location of the waveform data that is transferred with the CURVe command

Returns the format and location of the waveform data that is transferred with the CURVe? command

location for storing waveform data sent to the instrument

data

transferred from the instrument

waveform transfer

for the waveform as speciﬁed by the DATA:SOUrce command.

Sets or returns the DATa:SOUrce associated timebase used to specify the location of the waveform data to be transferred from the instrument

(preamble) for the incoming waveform

waveform point for the waveform to be transferred to the instrument

Sets o r returns the format of the binary or ascii data encoding of the waveform to be transferred to the instrument

CSA/TDS8000 Series Programmer Manual 2-47

Command Groups

Command

WFMInpre:BYT_Nr? Returns the byte width of the waveform to be

WFMInpre:BYT_Or Sets or returns which byte of binary waveform

WFMInpre:ENCdg Sets or returns the type of encoding used for

WFMInpre:NR_Pt

WFMInpre:P

WFMInpre:WFMLabel

WFMInpre:XINcr

WFMInpre:

WFMInpre

WFMInpre:XZEro

WFMInpr

WFMInp

WFMInpre:YSCALE Sets or returns the vertical unit scale factor

WFMInpre:YUNit

WFMInpre:YZEro

WFMOutpre? Returns the preamble for the outgoing

WFMOutpre:BIT_Nr? Returns the number of bits (width) per

T_Fmt

XMUlt

:XOFf

:XUNit

e:YMUlt

re:YOFf

Description

transferred to the instrument

data is transm data transfer to the instrument

waveform data transferred with the CURVe command

Sets or retur waveform

Sets or returns the data point format of the incoming waveform

Sets or r eturns the label for the incoming waveform

Sets or ret of the incoming waveform

Sets or returns the horizontal scale factor (horizontal units per division) of the incoming waveform

Sets or re horizontal units of the incoming waveform

Sets or returns the horizontal (x-axis) units of the incoming waveform

Sets or returns the horizontal (x-axis) origin offset ( the incoming waveform

Sets or returns the vertical scale in vertical units per division of the incoming waveform

ed by the previous CURVe? command

return

Sets or incoming waveform in divisions

of the incoming waveform

Sets or returns the vertical (y-axis) units of

coming waveform

the in

Sets o the incoming waveform

waveform

form point of the waveform to be

wave transferred from the instrument

itted ﬁrst during a waveform

ns the record length of the input

urns the interval between samples

turns the horizontal position in

time of ﬁrst point in this instrument) of

returns the vertical position of the

r returns the vertical offset voltage of

2-48 CSA/TDS8000 Series Programmer Manual

Command Groups

Command

WFMOutpre:BN_Fmt Sets or returns the format of the binary data

WFMOutpre:BY

WFMOutpre:BYT_Or Sets or returns which byte of binary waveform

WFMOutpre:E

WFMOutpre:NR_Pt? Returns the number of points that were

WFMOutpre:

WFMOutpre:WFId? Returns a descriptive string of the waveform

WFMOutpr

WFMOutpre:XINcr? Returns the interval between samples of

WFMOutp

WFMOutpre:XOFf?

WFMOutpre:XUNit? Returns the horizontal units of the waveform

WFMOut

WFMOutpre:YMUlt? Returns the vertical scale factor in vertical

WFMOutpre:YOFf? Returns the vertical position of the waveform

WFMOutpre:YSCALE? Returns vertical unit scale factor of the

WFMOutpre:YUNit? Returns the vertical units of the waveform

WFMOutpre:YZEro? Returns the vertical offset of the waveform

T_Nr?

NCdg

PT_Fmt?

e:WFMLabel?

re:XMUlt?

pre:XZEro?

Description

encoding of the waveform to be transferred from the instr

Returns the by be transferred from the instrument

data is transmitted ﬁrst during a waveform data transfe

Sets or retur waveform data transferred with the CURVe? command

returned by

Returns the waveform returned by the previous CURVe? command

returned b

Returns t transferred by the CURVe? command

the waveform transferred by the CURVe? command

Returns waveform returned by the previous CURVe? command

Returns the horizontal position in horizontal units of the returned waveform

returne

Return waveform returned by the previous CURVe? command

units p by the previous CURVe? command

returned by the previous CURVe? command

incom command

returned by the previous CURVe? command

rned by the previous CURVe? command

retu

ument

te width for the waveform to

ns the type of encoding used for

the previous CURVe? command

data point format of the

y the previous CURVe? command

he label for the previous waveform

the horizontal scale factor of the

d by the previous CURVe? command

s the time of ﬁrst point (sample) of the

er division of the waveform returned

ing waveform by the previous CURVe?

CSA/TDS8000 Series Programmer Manual 2-49

Command Groups

2-50 CSA/TDS8000 Series Programmer Manual

Commands Listed in Alphabetical Order

ACQuire? (Query Only)

y only command that returns all the current acquisition parameters.

ACQUIRE:CURRENTCOUNT:ACQWFMS 0;HISTWFMS

Group

Syntax

Examples

This is a quer

Acquisition

ACQuire?

ACQUIRE? might return the following string for the current acquisition

parameters:

0;HISTHITS 0;MASKWFMS 0;MASKSAMPLES 0;MASKTHITS 0;MASKHITS1 0;MASKHITS2 0;MASKHITS3 0;MASKHITS4 0;MASKHITS5 0;MASKHITS6 0;MASKHITS7 0;MASKHITS8 0;:ACQUIRE:MODE SAMPLE;NUMAVG 16;SAVEFILE:SAVESCREEN "";SAVEWFM "";:ACQUIRE:STATE 1;STOPAFTER:MODE RUNSTOP;BELL 0;ACTION NONE;CONDITION ACQWFMS;COUNT 1

ACQuire:CURRentcount:ACQWfms? (Query Only)

This query only command returns the current count value of acquired waveforms. The target value of this count is set by the ACQuire:STOPAfter:COUNt command (in conjunction with the ACQuire:STOPAfter:CONDition command). The instrument then counts up to this value. When the count reaches (or exceeds) the value, acquisition stops, and the speciﬁed StopAfter action is enabled.

Group

Syntax

Related Commands

Returns

Examples

CSA/TDS8000 Series Programmer Manual 2-51

Acquisition

ACQuire:CURRentcount:ACQWfms?

ACQuire:STOPAfter:COUNt, ACQuire:STOPAfter:CONDition

NR1 is the current count value of acquired waveforms.

ACQUIRE:CURRENTCOUNT:ACQWFMS? might return ACQUIRE:CURRENTCOUNT:ACQWFMS 20, indicating that

currently 20 waveforms have been acquired.

Commands Listed in Alphabetical Order

ACQuire:CURR

Related Commands

Examples

entcount:HISTHits? (Query Only)

This query only command returns the current count value of histogram hits. The target value of this count is set by the ACQuire:STOPAfter:COUNt command

ion with the ACQuire:STOPAfter:CONDition command). The

Group

Syntax

Returns

(in conjunct instrument then counts up to this value. When the count reaches (or exceeds) this value, acquisition stops, and the speciﬁed StopAfter action is enabled.

Acquisition

ACQuire:CURRentcount:HISTHits?

ACQuire:STOPAfter:COUNt, ACQuire:STOPAfter:CONDition

NR1 is the current count value of histogram hits.

ACQUIRE:CURRENTCOUNT:HISTHITS? might return ACQUIRE:CURRENTCOUNT:HISTHITS 100, indicating that currently 100

histogram hits have been acquired.

ACQuire:CURRentcount:HISTWfms? (Query Only)

This query only command returns the current count value of waveforms accumulated for histograms. The target value of this count is set by the ACQuire:STOPAfter:COUNt command (in conjunction with the ACQuire:STOPAfter:CONDition command). The instrument then counts up to this value. When the count reaches (or exceeds) this value, acquisition stops, and the speciﬁed StopAfter action is performed.

Group

Syntax

Related Commands

Returns

Acquisition

ACQuire:CURRentcount:HISTWfms?

ACQuire:STOPAfter:COUNt, ACQuire:STOPAfter:CONDition

NR1 is the current count value of histogram waveforms.

2-52 CSA/TDS8000 Series Programmer Manual

Commands Listed in Alphabetical Order

ACQuire:CUR

Related Commands

Examples

ACQUIRE:CURRE ACQUIRE:CURRENTCOUNT:HISTWFMS 25, indicating that currently 25

waveforms have been acquired in the histogram.

NTCOUNT:HISTWFMS?

Rentcount:MASKHits<x>? (Query Only)

This query only command returns the current count value of hits in the speciﬁed mask polygon, which can be 1 through 8. The target value of this count is

Quire:STOPAfter:COUNt command (in conjunction with the

Group

Syntax

set by the AC ACQuire:STOPAfter:CONDition command). The instrument then counts up to this value. When the count reaches (or exceeds) this value, acquisition stops, and the speciﬁed StopAfter action is enabled.

Acquisition

ACQuire:CURRentcount:MASKHits<x>?

ACQuire:STOPAfter:COUNt, ACQuire:STOPAfter:CONDition

might return

Returns

Examples

NR1 is the current count value of hits for the speciﬁed mask polygon, which can

be 1 through 8.

ACQUIRE:CURRENTCOUNT:MASKHITS4 might return ACQUIRE:CURRENTCOUNT:MASKHITS4 300, indicating that currently 300 m ask

hits have been acquired in mask 4.

ACQuire:CURRentcount:MASKSamples? (Query Only)

This query only command returns the current count value of mask samples. The target value of this count is set by the ACQuire:STOPAfter:COUNt command (in conjunction with the ACQuire:STOPAfter:CONDition command). The instrument then counts up to this value. When the count reaches (or exceeds) this value, acquisition stops, and the speciﬁed StopAfter action is performed.

Group

Syntax

Acquisition

ACQuire:CURRentcount:MASKSamples?

Related Commands

CSA/TDS8000 Series Programmer Manual 2-53

ACQuire:STOPAfter:COUNt, ACQuire:STOPAfter:CONDition

Commands Listed in Alphabetical Order

Returns

Examples

NR1 is the curre

ACQUIRE:CURRENTCOUNT:MASKSAMPLES? might return ACQUIRE:CURRENTCOUNT:MASKSAMPLES 75, indicating that

currently 75 mask samples have been acquired for mask testing.

nt count value of mask samples accumulated for mask testing.

ACQuire:CURRentcount:MASKTHits? (Query Only)

This query only command returns the current total count value of mask hits. The target value of this count is set by the ACQuire:STOPAfter:COUNt command (in conjunction with the ACQuire:STOPAfter:CONDition command). The instrument then counts up to this value. When the count reaches (or exceeds) this value, acquisition stops, and the speciﬁed StopAfter action is performed.

Group

Syntax

Acquisition

ACQuire:CURRentcount:MASKTHits?

Related Commands

Returns

Examples

ACQuire:STOPAfter:COUNt, ACQuire:STOPAfter:CONDition

NR1 is the current count value of mask hits.

ACQUIRE:CURRENTCOUNT:MASKTHITS? might return ACQUIRE:CURRENTCOUNT:MASKTHITS 300, indicating that currently 300 mask

hits have been acquired.

ACQuire:CURRentcount:MASKWfms? (Query Only)

This query only command returns the current count value of mask waveforms. The target value of this count is set by the ACQuire:STOPAfter:COUNt command (in conjunction with the ACQuire:STOPAfter:CONDition command). The instrument then counts up to this value. When the count reaches (or exceeds) this value, acquisition stops, and the speciﬁed StopAfter action is performed.

Group

Acquisition

Syntax

2-54 CSA/TDS8000 Series Programmer Manual

ACQuire:CURRentcount:MASKWfms?

Commands Listed in Alphabetical Order

Related Commands

Returns

Examples

ACQuire:STOPA

NR1 is the current count value of waveforms accumulated for mask testing.

ACQUIRE:CURRENTCOUNT:MASKWFMS? might return ACQUIRE:CURRENTCOUNT:MASKWFMS 25, indicating that currently 25

waveforms

fter:COUNt, ACQuire:STOPAfter:CONDition

have been acquired for mask testing.

ACQuire:DATA:CLEar (No Query Form)

This command (no query form) causes an acquisition reset and clears all acquired data, clears the display, and, if active, resets FrameScan. When a clear data occurs, it has the following effects:

Sample-mode waveform. The current waveform data is replaced by the waveform data of the next acquisition cycle when it is available.

Average-mode waveform. The average algorithm mode resets such that the next acquisition w ill be a straight-through copy.

Envelope-mode waveform. The envelope algorithm mode resets such that the next acquisition w ill be a straight-through copy.

Group

Syntax

Waveform database. The contents of the database will be cleared (reset to zero) at the start of the next acquisition cycle before adding the next acquisition.

Histogram data and statistics. The data and all statistics will be cleared immediately.

Mask counts and statistics. Mask counts and all statistics will be cleared immediately.

Acquisition status. The acquisition waveform count or StopAfter condition is reset and target counts are reloaded.

Counts. Resets all counts, including number of acquired waveforms, acquisition and math average counts, conditional stop counts, and FrameScan counts (if any of these are active).

Measurement statistics. Measurement statistics are reset.

Acquisition

ACQuire:DATA:CLEar

Examples

CSA/TDS8000 Series Programmer Manual 2-55

ACQUIRE:DATA:CLEAR causes an acquisition reset and clears all acquired data.

Commands Listed in Alphabetical Order

ACQuire:MODe

This command sets or queries the acquisition mode of the instrument, which determines how the ﬁnal value of the acquisition interval is generated from the many data sam channel wa veforms that it acquires. Sending this command is equivalent to selecting the Acquisition Mode in the Acquisition Setup dialog box.

Normally, the instrument takes one sample per trigger and builds a channel waveform over many successive triggers. If acquiring continues, the instrument writes over the acquired waveform with each newly acquired waveform from the same channel. You can modify this behavior by setting the instrument to use one of the three, mutually exclusive acquisition modes:

Sample. Use Sample mode to see the signal in its purest form with no post processing. This is the default mode.

Average. Use Average mode to reduce the apparent noise in the signal to reveal fundamental waveform behavior.

Envelope. Use Envelope mode when it’s important to see the variation of extremes in a waveform over time.

ples. The instrument applies the speciﬁed mode globally to all

Group

Syntax

Related Commands

Acquisition

ACQuire:MODe {SAMple|AVERage|ENVElope} ACQuire:MODe?

ACQuire:NUMAVg

2-56 CSA/TDS8000 Series Programmer Manual

Commands Listed in Alphabetical Order

Arguments

Examples

SAMple speciﬁe

simply the ﬁrst sampled value that was taken during the acquisition interval. There is no post processing of acquired samples; the instrument overwrites waveforms at each new acquisition cycle. mode.

AVERage speciﬁes averaging mode, in which the resulting waveform shows

anaverageofSAMpledatapointsfrom several consecutive waveform acquisitions. The instrument processes the number of waveforms you specify in exponential a verage of the input signal. The number of waveform acquisitions that go into making up the average waveform is set or queried using the ACQuire:NUMAVg command.

ENVElope speciﬁes envelope mode, in which the instrument continuously, as

subsequent waveforms are acquired, retains the running minimum (Min) and maximum (Max) values in adjacent sample intervals, creating an envelope of all waveforms acquired for that channel.

ACQUIRE:MODE ENVELOPE sets the acquisition mode to display a waveform that

is an envelope of many individual waveform acquisitions.

ACQUIRE:MODE? might return ACQUIRE:MODE AVERAGE, indicating that

the displayed waveform is the average of the speciﬁed number of waveform acquisitions.

s sample mode, in which the displayed data point value is

SAMple is the default acquisition

to the acquired waveform, creating a running back-weighted

ACQuire:NUMAVg

Group

Syntax

Related Commands

Arguments

This command sets or queries the number of waveform acquisitions that make up an averaged waveform. Sending this command is equivalent to set of samples in the Acquisition Mode section of the Acquisition Setup dialog box when Average is checked for the Acquisition Mode. Use the ACQuire:MODe command to enable the Average mode.

Acquisition

ACQuire:NUMAVg <NR1> ACQuire:NUMAVg?

ACQuire:MODe

NR1 is the number of consecutive waveform acquisitions (from 2 to 4,096) used

for averaging.

ting the number

CSA/TDS8000 Series Programmer Manual 2-57

Commands Listed in Alphabetical Order

Examples

ACQUIRE:NUMAV

of combining 10 separately acquired waveforms.

ACQUIRE:NUMAVG? might return ACQUIRE:NUMAVG 75, indicating that there are

75 acquisitions speciﬁed for averaging.

ACQuire:SAVEFile:SAVEScreen

This command sets or queries the ﬁle to which a screen is saved at the completion of a StopAfter condition (when the StopAfter action is set to SAVEScreen). See the ACQuire:STOPAfter:ACTion command. The s creen is saved in the speciﬁed ﬁle in .BMP format. This is equivalent to selecting Print Screen to File in the Stop Action section of the Acquisition Setup dialog box and entering a ﬁle name.

G10

speciﬁes that an averaged waveform will show the result

Group

Syntax

Related Commands

Arguments

Examples

Acquisition

ACQuire:SAVEFile:SAVEScreen <Qstring> ACQuire:SAVEFile:SAVEScreen?

ACQuire:STOPAfter:ACTion, ACQuire:STOPAfter:CONDition, ACQuire:STOPAfter:MODe

<Qstring> deﬁnes the ﬁle name and path. Input the ﬁle path using the form

ACQUIRE:SAVEFILE:SAVESCREEN "Wavetest.bmp" speciﬁes the ﬁle

Wavetest.bmp (in the current directory) to which the screen will be saved after a StopAfter SAVEScreen condition is met.

ACQUIRE:SAVEFILE:SAVESCREEN? might return ACQUIRE:SAVEFILE:SAVESCREEN "TESTFILE.BMP",

indicating that the screen will be saved in TESTFILE.BMP in the current directory when the StopAfter action is enabled.

ACQuire:SAVEFile:SAVEWfm

This command sets or queries the ﬁle to which waveform data is saved at the completion of a StopAfter condition (when the StopAfter action is set to SAVEWaveform). See the ACQuire:STOPAfte r:ACTion command. This is equivalent to selecting Save All Waveforms in the Stop Action section of the

2-58 CSA/TDS8000 Series Programmer Manual

Commands Listed in Alphabetical Order

Group

Syntax

Related Commands

Arguments

Acquisition Se base ﬁle name and path used when multiple waveforms are saved. Each saved waveform has the base ﬁle name with a unique index number appended to it to prevent overwriting of the ﬁles.

Acquisition

ACQuire:SAVEFile:SAVEWfm <Qstring> ACQuire:SAVEFile:SAVEWfm?

ACQuire:STOPAfter:ACTion, ACQuire:STOPAfter:CONDition, ACQuire:STOPAfter:MODe

<QSTRING> deﬁnes the base ﬁle name and path. Input the ﬁle path using the form

<drive>/<dir>/<ﬁlename>. The <drive> and one or more <dir> arguments are optional. If you do not specify them, the instrument will copy the ﬁle into the current directory. The <ﬁlename> can be a Windows long ﬁle name. Do not use wild card characters. An index number is attached to the base ﬁlename each time this command is sent so that the ﬁ le is not overwritten. For example, a ﬁle with thebasenameWave.docwillbesavedasWave1.doctheﬁrst time, Wave2.doc the second time, and so on.

tup dialog b ox and entering a ﬁle name. This command sets the

Examples

ACQuire:STATE

Group

Syntax

ACQUIRE:SAVEFILE:SAVEWFM "Wave.doc" speciﬁes the ﬁle Wave1.doc

(in the current directory) to which the screen will be saved after a StopAfter SAVEWfm condition is met.

ACQUIRE:SAVEFILE:SAVEWFM? might return ACQUIRE:SAVEFILE:SAVEWFM "WAVETST.DOC"

WAVETST.DOC in the current directory when the StopAfter action is enabled.

This command starts or stops acquisitions or queries whether the acquisition is running or stopped. Sending this command is equivalent to pressing the front-panel RUN/STOP button. The ACQuire:STOPAfter:MODe and

ACQuire:STOPAfter:CONDition commands may cause other signal events to

also stop acquisition.

Acquisition

ACQuire:STATE {OFF|ON|RUN|STOP|<NR1>} ACQuire:STATE?

, indicating that the waveform data will be saved in

CSA/TDS8000 Series Programmer Manual 2-59

Commands Listed in Alphabetical Order

Related Commands

Arguments

Examples

ACQuire:STOPA

OFF stops acquisitions.

STOP stops acquisitions.

ON starts acquisitions.

RUN starts acquisitions.

NR1 set to 0 stops acquisitions; any other value starts acquisitions.

ACQUIRE:STATE RUN starts acquisition of waveform data.

ACQUIRE:STATE? might return ACQUIRE:STATE 1, indicating that the

acquisition system is running.

NOTE. A query always returns a 0 or 1.

ACQuire:STOPAfter? (Query Only)

This query only command returns all StopAfter parameters.

fter:MODe, ACQuire:STOPAfter:CONDition

Group

Syntax

Examples

Acquisition

ACQuire:STOPAfter?

ACQUIRE:STOPAFTER? might return ACQUIRE:STOPAFTER:MODE RUNSTOP;BELL 0;ACTION NON E;CONDITION ACQWFMS;COUNT 1

ACQuire:STOPAfter:ACTion

This command sets or queries the action that the instrument performs after the acquisition is stopped when reading a conditional state. This is equivalent to making a Stop Action selection in the Acquisition Setup dia

Group

Syntax

Acquisition

ACQuire:STOPAfter:ACTion {NONe|SAVEScreen|PRINT Screen |SAVEWaveform} ACQuire:STOPAfter:ACTion

log box.

2-60 CSA/TDS8000 Series Programmer Manual

Commands Listed in Alphabetical Order

Related Commands

Arguments

Examples

ACQuire:SAVEF

NONe speciﬁes to take no action when the stop after condition is met. This is

ile:SAVEScreen, ACQuire:SAVEFile:SAVEWfm

the default.

SAVEScreen speciﬁes that on acquisition stop the ﬁle named by the

ACQuire:SAVEFile:SAVEScreen command will be created if it does not exist or overwritten if does. The resultant ﬁle will contain a bitmap image of the display.

PRINTScreen speciﬁes that on acquisition stop a bitmap image of the

application is sent to the default printer.

SAVEWaveform speciﬁes that on acquisition stop all waveforms are saved in

the ﬁles speciﬁed by the ACQuire:SAVEFile:SAVEWfm command.

ACQUIRE:STOPAFTER:ACTION PRINTSCREEN sets the instrument to send a

bitmap image of the application to the printer when the stop after condition is met.

ACQUIRE:STOPAFTER:ACTION? might return ACQUIRE:STOPAFTER:ACTION

, indicating that no action is taken when the stop after condition is met.

NONE

ACQuire:STOPAfter:BELL

This command sets or queries whether to sound the bell after the acquisition is complete of the Acquisition Setup dialog box.

Group

Syntax

Arguments

Examples

Acquisi

ACQuire:STOPAfter:BELL {ON|OFF|NR1} ACQuire:STOPAfter:BELL?

ACQUIRE:STOPAFTER:BELL ON turns on the Stop After Bell feature.

ACQUIRE:STOPAFTER:BELL? might return ACQuire:STOPAfter:BELL 1,

indicating that the Stop After Bell feature is on.

. This is equivalent to checking Ring Bell in the Stop Action section

tion

ON turns on the bell.

0FF turns off the bell.

NR1 set to 0 turns off the bell; any other value turns on the bell.

NOTE. A query always returns a 0 or 1.

CSA/TDS8000 Series Programmer Manual 2-61

Commands Listed in Alphabetical Order

ACQuire:STOP

After:CONDition

This command sets or queries the StopAfter condition. The StopAfter condition qualiﬁes a stop condition for the acquisition system. Only one StopAfter condition can be active indirectly, a speciﬁc data element or operation such that all mutually exclusive conditions are unique and unambiguous. This command allows you to specify the condition on which to stop acquiring. The condition is valid when the ACQuire:STOPAfter:MODE is set to CONDition. This is equivalent to checking the Condition control in the Stop After section of the Acquisition Setup dialog box and sel

NOTE. You must have the associated feature enabled before you can

set the StopAfter condition. For example, you must turn on histograms (HIStogram:ENABle) before you can set the HISTHits StopAfter condition.

Group

Syntax

Acquisition

ACQuire:STOPAfter:CONDition {ACQWfms|HISTWavefo rm|HISTHits |MASKWaveform|MASKSample|MASK<x>Hits |MASKTOTalhit|FRAMecycle|AVGComp} ACQuire:STOPAfter:CONDition?

at a given time. Each StopAfter condition identiﬁes, directly or

ecting a condition.

Related Commands

Arguments

ACQuire:STOPAfter:COUNt, ACQuire:STOPAfter:MODe

ACQWfms sets the instrument to stop acquiring after some speciﬁed number of

raw acquisition cycles. This setting tells the instrument to count the number of Main Timebase sweeps (Mag sweeps are not counted independently) and stop acquisition after the speciﬁed number of acquisitions has been reached. Use the ACQuire:STOPAfter:COUNt command to set the target number of waveforms.

HISTWaveform sets the instrument to stop acquisition after a

speciﬁed number of Histogram source waveforms is acquired. Use the ACQuire:STOPAfter:COUNt command to set the speciﬁed number of waveforms.

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Commands Listed in Alphabetical Order

HISTHits sets t

he instrument to stop acquisition after it acquires a speciﬁed number of valid hits (that is, non-null samples) in the histogram region. This is a greater than or equal to condition because only complete records are processed. Therefore, the number of actual hits will not necessarily match your requested number of hits; the acquisition will stop when the number of hits is greater than or equal to the number of speciﬁed hits. Use the ACQuire:ST

MASKWaveform sets the instrument to stop acquisition after a speciﬁed

number of w

OPAfter:COUNt command to set the speciﬁed number of hits.

aveforms is acquired of the Mask source waveform. Use the ACQuire:STOPAfter:COUNt command to set the speciﬁed number of waveforms.

MASKSample sets the instrument to stop acquisition after a greater than or

equal to number of valid (that is, non-null) waveform samples are acquired of the Mask source waveform. Use the ACQuire:STOPAfter:COUNt command to set the speciﬁed number of waveform samples.

MASK<x>Hits sets the instrument to stop acquisition after a speciﬁed number

of mask hits occur in mask number < x>, which can be 1 through 8. For the same reasons as HISTHits argument, this is also a g reater than or equal to

ion. Use the ACQuire:STOPAfter:COUNt command to set the speciﬁed

condit number of hits.

MASKTO

Talhit

sets the instrument to stop acquisition after a speciﬁed number of total mask hits occurs in all masks combined. For the same reasons as the HISTHits argument, this is also a greater than or equal to condition. Use the ACQuire:STOPAfter:COUNt command to set the speciﬁed total number of hits.

Examples

FRAMecycle sets the instrument to stop acquisition after it has acquired

the number of bits speciﬁed in the Scan Bits ﬁeld in the Frame Scan section of the Horizontal Setup dialog box (for example, stop after

frame scan cycle). You can set the number of scan bits with the

one HORizontal:FRAMescan:SCANBits command.

GComp

sets the instrument to stop acquisition after the number of waveforms speciﬁed by the ACQuire:NUMAVg command have been acquired and averaged.

ACQUIRE:STOPAFTER:CONDITION HISTHits sets the instrument to stop

acquisition after it acquires the speciﬁed number of valid hits in the histogram region.

ACQUIRE:STOPAFTER:CONDITION? might return ACQuire:STOPAfter:CONDition MASK3HITS, indicating that

the acquisition will be stopped after the hits in mask 3 are equal to or greater than the speciﬁed number of hits.

CSA/TDS8000 Series Programmer Manual 2-63

Commands Listed in Alphabetical Order

ACQuire:STOP

Related Commands

After:COUNt

This command sets or queries the target StopAfter count for the condition speciﬁed by the ACQuire:STOPAfter:CONDition command. The current count for the condi are s topped and a StopAfter action is enabled. The state of the numeric StopAfter count for each condition is kept individually so that you do not need to re-enter a count when switching between conditions. Use the appropriate ACQuire:CURRentcount command to get the current count for a condition (see Related Commands below).

Group

Syntax

Acquisition

ACQuire:STOPAfter:COUNt <NR1> ACQuire:STOPAfter:COUNt?

ACQuire:STOPAfter:MODe, ACQuire:STOPAfter:CONDition, ACQuire:CURRentcount:ACQWfms?, ACQuire:CURRentcount:HISTWfms?, ACQuire:CURRentcount:HISTHits?, ACQuire:CURRentcount:MASKWfms?, ACQuire:CURRentcount:MASKHits<x>?, ACQuire:CURRentcount: MASKSamples?

tion must be equal to or greater than this value before acquisitions

Arguments

Examples

NR1 is the count value that must be reached (or exceeded) before the acquisitions

stop and StopAfter action can occur.

ACQUIRE:STOPAFTER:COUNT 12 sets the StopAfter count for the speciﬁed

condition to 12.

ACQUIRE:STOPAFTER:COUNT? might return AC Quire:STOPAfter:COUNt 5,

indicating that the total count for the speciﬁed condition is 5.

ACQuire:STOPAfter:MODe

This command tells the instrument when to stop taking acquisitions. The query form of this command returns the StopAfter mode. This command is the equivalent of checking Run/Stop or Condition in the Stop After section of the Acquisition Setup dialog box. (The ACQuire:STATE command can also be used to start or stop acquisitions.)

Group

Acquisi

tion

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Commands Listed in Alphabetical Order

Syntax

Related Commands

Arguments

Examples

ACQuire:STOPA ACQuire:STOPAfter:MODe?

ACQuire:STOPAfter:CONDition, ACQuire:STATE

RUNSTop speciﬁes that the run and stop state is determined by the one of

the front-panel RUN/STOP controls.

CONDition speciﬁes that the run and stop state of the system is determined

by a set a qualiﬁers speciﬁed by the StopAfter Condition. These sub-states are further described in the ACQuire:STOPAfter: instrument can still be stopped unconditionally by pressing the front-panel Run/Stop button or by sending the ACQuire:STATE command.)

ACQUIRE:STOPAFTER:MODE RUNSTOP sets the instrument to run or stop

acquisitions when the user presses the front-panel RUN/STOP button.

ACQUIRE:STOPAFTER:MODE? might return ACQUIRE:STOPAFTER:MODE CONDITION

a set of qualiﬁers speciﬁed by the StopAfter condition.

fter:MODe {RUNSTop|CONDition}

CONDition section. (The

, indicating that the run and stop state of the system is determined by

ALLEv? (Query Only)

Group

Syntax

Related Commands

Returns

This query only command causes the instrument to return all events and their messages and removes the returned events from the Event Queue. The messages are separated by commas. Use the *ESR? query to enable the events to be returned. For a complete discussion of the use of these registers, see the t in Status and Events. This command is similar to repeatedly sending *EVMsg? queries to the instrument.

Status and Error

ALLEv?

*CLS, DESE, *ESE, *ESR?, EVENT?, EVMsg?, EVQty?, *SRE, *STB?

The event code and message in the following format:

<Event Code>,<QString>[<Event Code>,<QString>]<QString>::=<Message>;[<Command>]

where <Command> is the command that caused the error and may be returned when a command error is d etected by the instrument. As much of the command will be returned as possible without exceeding the 60-character limit of the

opics

CSA/TDS8000 Series Programmer Manual 2-65

Commands Listed in Alphabetical Order

Command> strings combined. The command string is right

Examples

<Message> and < justiﬁed.

ALLEV? might return the string :ALLEV 2225,"MEASUREMENT ERROR, NO WAVEFORM TO MEASURE;",420 ,"QUERY UNTERMINATED;"

APPlication:ACTivate (No Query Form)

This command (no query form) is used to launch the optional software applications. The application must be installed and activated with a key code. (A key code is not necessary if the application is within a free trial period).

Group

Syntax

Arguments

Miscellaneous

APPlication:ACTivate {80SJNB}

80SJNB is the optional 80SJNB Advanced Jitter, Noise, and BER Analysis

software. analysis application for serial data signal impairment characterization. The 80SJNB application requires approximately 10 seconds to launch.

80SJNB is a comprehensive jitter, noise, and bit error ratio (BER)

Examples

APPLICATION:ACTIVATE 80SJNB launches the 80SJNB software application.

AUTOSet (No Query Form)

This command (no query form) causes the i nstrument to adjust its vertical, horizontal, and trigger controls to provide a stable display of the selected waveform. Sending this command is equivalent to pressing the front-panel AUTOSET button.

NOTE. If the currently selected waveform is a mask source, a mask autoset will

be performed.

Group

Syntax

Related Commands

Miscellaneous

AUTOSet EXECute

AUTOSet:TYPE

2-66 CSA/TDS8000 Series Programmer Manual

Commands Listed in Alphabetical Order

Arguments

Exampl

AUTOSet:HORizontal

Group

Syntax

Related Commands

Arguments

EXECUTE autose

AUTOSET EXECUTE performs an autoset on the currently selected waveform.

This command sets or queries whether an autoset should perform the horizontal autoset portion when Autoset is executed.

Horizontal

AUTOSet:HORizontal {ON|OFF|0|1} AUTOSet:HORizontal?

AUTOSet

ON enables the horizontal AutoSet options.

ts the currently selected waveform.

OFF disables the horizontal AutoSet options.

0 disables the horizontal AutoSet options.

1 enables the horizontal AutoSet options.

Examples

AUTOSET:HORIZONTAL ON enables the horizontal autoset options.

AUTOSET:HORIZONTAL? might return AUTOSET:HORIZONTAL 0, indicating that

horizontal autoset options are disabled.

AUTOSet:STOP (No Query Form)

This command (no query form) aborts an autoset that was initiated with the AUTOSet command.

Group

Syntax

Miscellaneous

AUTOSet:STOP

Examples

CSA/TDS8000 Series Programmer Manual 2-67

AUTOSET:STOP aborts the autoset.

Commands Listed in Alphabetical Order

AUTOSet:TDR:

Related Commands

Arguments

INCident

Group

Syntax

This command sets or queries the option to display the TDR incident edge on-screen when performing a TDR Autoset. If the Display Incident Edge is on, the incident If the Display Incident Edge is off, the incident edge is placed one horizontal division off the left edge of the screen.

TDR

AUTOSet:TDR:INCident {ON|OFF|0|1} AUTOSet:TDR:INCident?

AUTOSet:TYPE, AUTOSet

ON enables the TDR incident edge autoset option.

OFF disables the TDR incident edge autoset option.

0 disables the TDR incident edge autoset option.

edge is placed at the one-half horizontal division (from left edge).

Examples

AUTOSet:TRIGger

Group

Syntax

1 enables the TDR incident edge autoset option.

AUTOSET:TDR:INCIDENT ON turns on the Incident Edge option for the TDR

autoset.

AUTOSET:TDR:INCIDENT? might return :AUTOSET:TDR:INCIDENT 1,

indicating that the TDR incident edge is set to be displayed on-screen when performing a TDR autoset.

NOTE. A query always returns a 0 or 1.

This command sets or queries whether an autoset should perform the trigger autoset portion when Autoset is executed.

Trigger

AUTOSet:TRIGger {ON|OFF|0|1} AUTOSet:TRIGger?

2-68 CSA/TDS8000 Series Programmer Manual

Commands Listed in Alphabetical Order

Related Commands

Arguments

Examples

AUTOSet:TYPE

AUTOSet

ON enables the trigger AutoSet options.

OFF disables the trigger AutoSet options.

0 disables the trigger AutoSet options.

1 enables the

AUTOSET:TRIGGER ON enables the trigger autoset options.

AUTOSET:TRIGGER? might return AU TOSET:TRIGGER 0, indicating that trigger

autoset options are disabled.

This comm to perform nonmask AUTOSet operations. Using the TYPE argument, you can bias the autoset operation for display of either a waveform edge, period, eye, or TDR edge in the graticule. Sending this command is equivalent to selecting a mode in the Autoset Properties dialog box.

trigger AutoSet options.

and sets or queries the default mode used by the AUTOSet command

Grou

Syntax

Related Commands

NOTE. When performing MASK:AUTOSet operations, the currently pre-deﬁned

mask st execution, not the AUTOSET:TYPE command setting. However, when u sing a user-deﬁned mask, you still might w ant to use the AUTOSet and AUTOSet:TYPE command, since the MASK:AUTOSET command is unable to obtain autoset parameters from a user-deﬁned mask standard.

Miscellaneous

AUTOSet:TYPE {EDGe|PERIod|EYE|RZ|TDR} AUTOSet:TYPE?

AUTOSet, AUTOSet:TDR:INCident, AUTOSet:VERTical, AUTOSet:TRIGger, AUTOSet:HORizontal

andard (selected with the MASK:STANDARD command) drives Autoset

CSA/TDS8000 Series Programmer Manual 2-69

Commands Listed in Alphabetical Order

Arguments

EDGE sets subse

quent autoset commands to conﬁgure the instrument to display a rising edge of the signal connected to the currently selected channel in the center 20% of the graticule.

PERIod sets subsequent autoset commands to conﬁgure the instrument to

display 2 to 3 periods of the signal connected to the currently selected channel centered in the graticule.

EYE sets subsequent autoset commands to conﬁgure the ins trument to display

one bit (two eye crossings) horizontally centered across a pproximate ly 70% of the graticule (7 divisions) and vertically centered across approximately 60% of the graticule (6 divisions). Use the Eye argument for N

RZ sets subsequent autoset commands to conﬁgure the instrument to display

RZ waveforms.

one bit (two rising edges) horizontally centered across approximately 60% of the graticule (6 divisions) and vertically centered across approximately 50% of the graticule (5 divisions).

TDR sets subsequent autoset commands to conﬁgure the ins trument to display

the ﬁrst signiﬁcant reﬂection at the third horizontal division. If the Display Incident Edge option is on, the incident edge is placed at the one-half horizontal division (from left edge). If the Display Incident Edge is off, the incident edge is placed one horizontal division off the left edge of the screen. If no signiﬁcant reﬂections are located, the incident edge is placed at the one-half horizontal division (from left edge) regardless of the Display Incident Edge setting.

Examples

AUTOSET:TYPE EDGE sets the default Autoset mode to EDGE.

AUTOSET:TYPE? might return AUTOSET:TYPE RZ, indicating that the default

AutosetmodeisRZ.

AUTOSet:UNDO (No Query Form)

This command (no query form) returns the parameters changed by an AUTOSet command to their previous states. This command is invalidated the ﬁ rst time you modify any instrument state parameter.

Group

Syntax

Related Commands

Examples

Miscellaneous

AUTOSet:UNDO

AUTOSet

AUTOSET:UNDO returns the parameters to their previous states,

2-70 CSA/TDS8000 Series Programmer Manual

AUTOSet:VERTical

Commands Listed in Alphabetical Order

This command sets or queries whether an autoset should perform the vertical autoset portion when Autoset is executed.

Group

Syntax

Related Commands

Arguments

Examples

Vertical

AUTOSet:VERTical {ON|OFF|0|1} AUTOSet:VERTical?

AUTOSet

ON enables the vertical AutoSet options.

OFF disables the vertical AutoSet options.

0 disables the vertical AutoSet options.

1 enables the vertical AutoSet options.

AUTOSET:VERTICAL ON

This command enables the vertical autoset options.

AUTOSET:VERTICAL? might return AUTOSET:VERT ICAL 0, indicating that

vertical autoset options are disabled.

BUSY? (Query Only)

This is a query only command that returns the status of the instrument. This command allows you to synchronize the operation of the instrument with your application program. See Synchronization Methods for more detailed information.

Group

Syntax

Related Commands

CSA/TDS8000 Series Programmer Manual 2-71

Status and Error

BUSY?

*OPC, *WAI

Commands Listed in Alphabetical Order

Returns

<NR1>

If 0 is returned, it means that the instrument is not busy processing a command whose execution time is extensive. These commands are listed in the table below. If 1 is returned, it means that the instrument is busy processing one of the commands listed in the table below.

Table 2-19: Commands that affect BUSY? response

Operation Command

Automatic instrument adjustment

Internal self compensation

Conditional ACQuire:STATE ON or

Hardcopy output

AUTOSet EXECute

COMPensate:ALL

COMPensate:CH<x>

COMPensate:DARKLev:CH<x>

COMPensate:MAInframe

COMPensate:OPTGAIN:CH<x>

ACQuire:STATE RUN

(when ACQuire:STOPAfter:MODe is set to CONDition)

HARDCopy STARt

Examples

BUSY? might return 1, indicating that the instrument is busy.

CALibrate:DATE:CH<x>? (Query Only)

This query only command returns the date and time of the last calibration information update for the sampling module channel.

Group

Syntax

Examples

Calibration

CALibrate:DATE:CH<x>?

CALIBRATE:DATE:CH1? might return CALIBRATE:DATE:CH1 15 JAN 00

, indicating that the last calibration update for the CH1 sampling module

16:25

was done on January 15, 2000, at 4:25 PM.

CALibrate:DATE:MAInframe? (Query Only)

This query only command returns the date and t information update for the mainframe.

ime of the last calibration

2-72 CSA/TDS8000 Series Programmer Manual

Commands Listed in Alphabetical Order

Group

Syntax

Examples

Calibration

CALibrate:DATE:MAInframe?

CALIBRATE:DATE:MAINFRAME? might return CALIBRATE:DATE:MAINFRAME 15 JAN 00 16:25

wasdoneonJ

CALibrate:DCCALibrator

This command sets or queries the value of the DC Calibrator voltage.

Group

Syntax

Arguments

Calibration

CALibrate:DCCALibrator <NR2> CALibrate:DCCALibrator?

NR2 is the value to which you want to set the DC Calibrator voltage. The range

for this value is from -1.25 VDC through +1.25 VDC.

, indicating that the last calibration u pdate for the mainframe

anuary 15, 2000, at 4:25 PM.

Examples

CALIBRATE:DCCALIBRATOR 0.5 sets the DC Calibrator voltage to 0.5 V.

CALIBRATE:DCCALIBRATOR? might return CALIBRATE:DCCALIBRATOR

5.00000000000E-001

, indicating that the DC Calibrator voltage is set to 0.5 V.

CALibrate:HOSTinfo:CH<x>? (Query Only)

This query only command returns the mainframe channel, model number, and serial number in which the sampling module channel was located during the last calibration information update.

Group

Syntax

Examples

Calibration

CALibrate:HOSTinfo:CH<x>?

CALIBRATE:HOSTINFO:CH<x>? might return CALIBRATE:HOSTINFO:CH2 "TDS8000,B010235,CH4"

channel 2 was installed in channel 4 of the TDS8000 mainframe, serial number B010235 during the last calibration information update.

, indicating that the sampling module currently in

CSA/TDS8000 Series Programmer Manual 2-73

Commands Listed in Alphabetical Order

CALibrate:LO

CK:STATus? (Query Only)

This is a query only c ommand that returns the status of the calibration information hardware lock switch.

Group

Syntax

Examples

Calibration

CALibrate:LOCK:STATus?

CALIBRATE:LOCK:STATUS? might return CALIBRATE:LOCK:STATUS 1,

indicating that the calibration information is protected and cannot be updated.

CALibrate:STATus:CH<x>? (Query Only)

This is a query only command that returns the current calibration status for the sampling module channel.

Group

Calibration

Syntax

Returns

Examples

CALibrate:STATus:CH<x>?

May return PASS, DEFAULTS, or WARMUP.

CALIBRATE:STATUS:CH1? might return CALIBRATE:STATUS:CH1 PASS,

indicating that the calibration status of the sampling module in channel 1 is PASS.

CALibrate:STATus:MAInframe? (Query Only)

This is a query only command that returns the current calibration status for the mainframe.

Group

Syntax

Returns

Calibration

CALibrate:STATus:MAInframe?

May return PASS, DEFAULTS, or WARMUP.

2-74 CSA/TDS8000 Series Programmer Manual

Commands Listed in Alphabetical Order

CALibrate:T

Examples

CALIBRATE:STA CALIBRATE:STATUS:MAINFRAME PASS, indicating that the

calibration status of the mainframe is PASS.

TUS:MAINFRAME?

EMPerature:CH<x>? (Query Only)

This is a query only command that returns the difference (in ° C) between the current sampling module channel temperature and the temperature recorded at

ibration information update.

Group

Syntax

Examples

the last cal

Calibration

CALibrate:TEMPerature:CH<x>?

CALIBRATE:TEMPERATURE:CH2? might return CALIBRATE:TEMPERATURE:CH2 1.5, indicating that the

temperature difference between the current sampling module channel temperature and the temperature recorded at the last calibration information update is 1.5 °C.

might return

CALibrate:TEMPerature:MAInframe? (Query Only)

This is a query only command that returns the difference (in ° C) between the current mainframe temperature and the temperature recorded at the last calibration information update.

Group

Syntax

Examples

Calibration

CALibrate:TEMPerature:MAInframe?

CALIBRATE:TEMPERATURE:MAINFRAME? might return CALIBRATE:TEMPERATURE:MAINFRAME -2.7, indicating that the

difference in temperature between the current mainframe temperature and the temperature recorded at the last calibration information update is -2.7 °C

CALibrate:UPDATEinfo:ALL (No Query Form)

This command (no query form) updates the calibration information for the mainframe and all resident module channels into nonvolatile memories.

CSA/TDS8000 Series Programmer Manual 2-75

Commands Listed in Alphabetical Order

ration lock switch must be set to Unprotected (that is, a query

Group

Syntax

Examples

NOTE. The calib

status of 0) for the calibration information to be updated.

Calibration

CALibrate:UPDATEinfo:ALL

CALIBRATE:UPDATEINFO:ALL updates the nonvolatile memories of the

mainframe and all resident module channels with the latest calibration information.

CALibrate:UPDATEinfo:CH<x> (No Query Form)

This command (no query form) updates the calibration information in the nonvolatile memory of the sampling module. This includes the current date and time, temperature, and host information (such as current channel, location, model number, and serial number).

NOTE. The calibration lock switch must be set to Unprotected (that is, a query

status of 0) for the calibration information to be updated.

Group

Syntax

Examples

Calibration

CALibrate:UPDATEinfo:CH<x>

CALIBRATE:UPDATEINFO:CH1 updates the nonvolatile memory of the module

occupying channel 1 with the latest calibration information.

CALibrate:UPDATEinfo:MAInframe (No Query Form)

This command (no query form) updates the calibration information in the nonvolatile memory of the mainframe. This includes the current date, time, and temperature.

NOTE. The calibration lock switch must be set to Unprotected for the calibration

information to be updated.

Group

Calibration

2-76 CSA/TDS8000 Series Programmer Manual

Commands Listed in Alphabetical Order

Syntax

Examples

CH<x>? (Query Only)

Group

Syntax

Examples

CALibrate:UPD

CALIBRATE:UPDATEINFO:MAINFRAME u

mainframe with the latest calibration information.

This is a query only command that returns the vertical parameters for the speciﬁed channel. The channel is speciﬁed by x, which can be 1 through 8.

Vertical

CH<x>?

CH3? might return CH3:DESKEW 0.000000000000; OFFSET

0.000000000000; UNITS AUT O; FILTER:VALUE NONE; CH3:EXTATTEN:MODE LINEAR; VALUE 1.000000000000; CH3:POSITION

0.000000000000; PTPEAK 0. 700000000000; SCALE 0.700000000000

ATEinfo:MAInframe

pdates the nonvolatile memory of the

CH<x>:BANdwidth:LIST? (Query Only)

This query-only command returns a list of the available bandwidths for the speciﬁed channel. The channel is speciﬁed by x, which can be 1 through 8. The returned list contains the actual bandwidths available for the channel. The available bandwidths are dependent on the module.

The optical modules have differing valid settings. Use the <>:LIST? query to determine the valid {Clock Recovery | Filter | Bandwidth | Wavelength} settings for your optical module. Features of currently installed optical modules can be viewed using the System Properties dialog.

To set the bandwidth for a channel, use the CH<x>:BANdwidth:VALue command.

Group

Syntax

Related Commands

Vertical

CH<x>:BANdwidth:LIST?

CH<x>:BANdwidth:VALue

CSA/TDS8000 Series Programmer Manual 2-77

Commands Listed in Alphabetical Order

Examples

CH<x>:BANdw

CH1:BANDWIDTH

20.0000000000E+009,12.49999974400E+009

available for Channel 1.

idth:VALue

This command sets or queries the bandwidth for the channel speciﬁed by x, which can be 1 through 8. Sending the command is the equivalent to selecting a bandwidth section of the Vertical Setup dialog box for Optical. The available bandwidths are determined by the optical sampling module.

The optical modules have differing valid settings. Use the <>:LIST? query to determine the valid {Clock Recovery | Filter | Bandwidth | Wavelength} settings foryouropticalmodule. Featuresofcurrently installed modules can be viewed using the System Properties dialog.

You can use the CH<x>:BANdwidth:LIST? query to determine the available bandwidths for the speciﬁed channel.

Group

Vertical

:LIST?

from the Bandwidth pulldown menu in the Signal Conditioning

might return CH1:BANDWIDTH:LIST

, indicating the bandwidths

Arguments

Examples

CH<x>:DESkew

Syntax

CH<x>:BANdwidth:VALue <NR3> CH<x>:BANdwidth:VALue?

NR3 is the value of the bandwidth you want to set. Use the

CH<x>:BANdwidth:LIST? command to query the bandwidths available for the speciﬁed channel. The instrument automatically selects the bandwidth nearest to the input value.

CH1:BANDWIDTH:VALUE 2.0E+10 sets the Channel 1 bandwidth to 20 GHz.

CH2:BANDWIDTH:VALUE? might return CH2:BANDWIDTH:VALU E

12.49999974400E+009

to 12.5 GHz.

This command sets or queries the deskew time for the channel speciﬁed by x, which can be 1 through 8. Sending this command is the equivalent to setting Deskew in the Vertical Setup dialog box for the selected channel.

You can a djust deskew to add or subtract an independent, channel-based acquisition time delay to the delay from the trigger point (the horizontal position)

, indicating that the bandwidth for Channel 2 is set

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Commands Listed in Alphabetical Order

Group

Syntax

Arguments

Examples

that is inheren to compensate for delay differences introduced between channels by external cabling with unequal delays.

NOTE. Setting different deskew values on dual-channel sampling modules that

use a single sampling strobe (for example, the 80E02, 80E03, 80E04 sampling modules) reduces overall acquisition performance. In these instances, the acquisitio each of the signals with the desired time alignment. This multiple pass acquisition process applies to the acquisition of the channels within each active timebase.

Vertical

CH<x>:DESkew <NR3> CH<x>:DESkew?

NR3 is the deskew time for this channel. The range is -0.5 ns to +100 ns with a

resolution of 1 ps. Out of range values are clipped.

CH7:DESKEW 5.0E-9 sets the deskew time for Channel 7 to 5 ns.

tly common to the acquisition of all channels. This allows you

n must digitize each channel on a separate acquisition pass to obtain

CH<x>:EXTAtten:MODe

Group

Syntax

Arguments

Examples

CH3:DESKEW? might return CH3:DESKEW 10.00000000008E-009, indicating

that the deskew time for Channel 3 is set to 10 ns.

This command sets or queries the external attenuation mode for the c hannel speciﬁed by x, which can be 1 through 8.

Vertical

CH<x>:EXTAtten:MODe {LINear|DB} CH<x>:EXTAtten:MODe?

LINear sets the mode so that the attenuatio

multiplier, such as 15X.

DB sets the mode so that the attenuation value is in dB.

CH7:EXTATTEN:MODE LIN sets the external attenuation mode to linear for the

Channel 7.

n value is a linear numeric

CSA/TDS8000 Series Programmer Manual 2-79

Commands Listed in Alphabetical Order

CH<x>:EXTAtten:VALue

CH3:EXTATTEN:

the external attenuation is set to the DB mode for Channel 3.

This command sets a value matching the amount of attenuation applied externally, before the signal enters the speciﬁed input channel. The channel is speciﬁed by x, which can be 1 through 8. The query form returns the amount of attenuation that is set for the instrument. The instrument takes into account this external attenuation when displaying vertical readouts, measurements, and so on for this channel. This command is the equivalent to entering a value in the External Attenuation control in the External Attenuation section of the Vertical Setup d ialog box.

Use the CH<x>:EXTAtten:MODE command to select whether the attenuation value is set or returned as a linear attenuation (such as 15X) or as dB attenuation (suchas10dB).

NOTE. External Attenuation (dB) = 20 * log10 (Linear) for External Attenuation

(linear) > 0.

For example, 0 dB=1X, 20 dB=10X, 40 dB=100X, and so on.

MODE?

might return CH3:EXTATTEN:MODE DB, indicating that

Group

Syntax

Related Commands

Arguments

Examples

The external attenuation is set to 1 (linear) or 0 dB for all TDR sources and for all channels released as TDR sources. External attenuation is set to 1 (linear) or 0 dB when you attach an external real-time accessory, such as a probe, to the selected channel.

Vertical

CH<x>:EXTAtten:VALue <NR3> CH<x>:EXTAtten:VALue?

CH<x>:EXTAtten:MODe

NR3 is the attenuation value speciﬁed as a multiplier in the range of 1.0E-6 to

1.0E+6. The default is 1.00.

CH7:EXTATTEN:VALUE 1.5E+1 sets the external attenuation for Channel 7 to

15X when linear is set as the external attenuation mode.

CH3:EXTATTEN:VALUE? might return CH3:EXTATTEN:VALUE

10.000000000000

Channel 3 when linear is set as the external attenuation mode.

, indicating that the external attenuation is set to 10X for

2-80 CSA/TDS8000 Series Programmer Manual

Commands Listed in Alphabetical Order

CH<x>:FILTer

:LIST? (Query Only)

Group

Syntax

Related Commands

Examples

CH<x>:FILTer:VALue

This query only command returns a list of the ﬁlters available for the channel speciﬁed by x, which can be 1 through 8. The ﬁlters available depend on the module. Send Signal Conditioning section o f the Optical portion of the Vertical Setup dialog box.

Use the CH<x>:FILTer:VALue command to set a ﬁlter.

Vertical

CH<x>:FILTer:LIST?

CH<x>:FILTer:VALue

CH1:FILTER:LIST? might return CH1:FILTER:LIST NONE,OC12,OC48,OC192

ing this command is the equivalent using the Filter pulldown in the

, indicating the ﬁlters available for Channel

Group

Syntax

Related Commands

This command sets or queries the reference-receiver ﬁlter that is applied to t he channel speciﬁed by x, which can be 1 through 8. The reference-receiver ﬁlter selections require hardware support that may not be provided by your sampling module; see your module user manual to determine which ﬁlters your module supports. You can also use the CH<x>:FILTer:LIST? query to return a list of the ﬁlters available for the speciﬁed channel.

If you select a ﬁlter that your sampling module does not support, you will receive Execution Error code 2508, with error message "Selected ﬁlter is not available". (See Messages for general information on programming interface messages.)

Vertical

CH<x>:FILTer:VALue {NONe|ENET1250|ENET2500 |ENET3125|ENET9953|ENET10313|ENET11096 |FC1063|FC2125|FC3188|FC4250|FC10519 |FEC2666|FEC10664|FEC10709|FEC43018 |INFIniband|OC1|OC3|OC9|OC12|OC18 |OC24|OC36|OC48|OC96|OC192|OC768} CH<x>:FILTer:VALue?

CH<x>:FILTer:LIST?

CSA/TDS8000 Series Programmer Manual 2-81

Commands Listed in Alphabetical Order

Arguments

NONe disables r

ENET1250 selects a reference-receiver ﬁlter for the 1.250 Gb/s bit rate, in

eference-receiver ﬁltering.

accordance with the IEEE 802.3ae-2002 standard.

ENET2500 selects a reference-receiver ﬁlter for the 2.500 Gb/s bit rate (2x

Gigabit Ethernet).

ENET3125 selects a reference-receiver ﬁlter for the 3.125 Gb/s bit rate, in

accordance with the IEEE 802.3ae-2002 standard.

ENET9953 selects a reference-receiver ﬁlter for the 9.9533 Gb/s bit rate, in

accordance with the IEEE 802.3ae-2002 standard.

ENET10313 selects a reference-receiver ﬁlter for the 10.313 Gb/s bit rate, in

accordance with the IEEE 802.3ae-2002 standard.

ENET11096 selects a reference-receiver ﬁlt

er for the 11.096 Gb/s bit rate,

which is a forward error-correction rate for 10GbE (10.3125 Gb/s per IEEE

802.3ae-2002 standard).

FC1063 selects a reference-receiver ﬁlter for the 1.0625 Gb/s bit rate, in

accordance with the ANSI X3.230-1994 standard.

FC2125 selects a reference-receiver ﬁlter for the 2.125 Gb/s bit rate, in accordance

with the ANSI Fibre Channel Physical Interface (FC-PI) Rev 11 draft standard.

FC3188 selects clock recovery for the 3.1875 Gb/s bit rate

, in accordance with the

proposed 10 Gigabit Fibre Channel (10GFC) standard.

FC4250 selects a reference-receiver ﬁlter for the 4.250 Gb/s bit rate, in accordance

with the ANSI Fibre Channel Physical Interface (FC-PI) Rev 11 draft standard.

FC10519 selects a reference-receiver ﬁlter for the 1 0.518750 Gb/s bit rate, in

accordance with the proposed 10 Gigabit Fibre Channel (10GFC) standard.

FEC2666 selects a reference-receiver ﬁlter for the 2 .6660571 Gb/s bit rate, in

accordance with the ITU-T G.975 Recommendation.

FEC10664 selects a reference-receiver ﬁ lter for the 10.6642 Gb/s bit rate, in

accordance with the ITU-T G.975 Recommendation.

FEC10709 selects a reference-receiver ﬁlter for the 10.709225 Gb/s bit rate, in

accordance with the ITU-T G.709 draft Recommendation.

FEC43018 selects a reference-receiver ﬁlter for the 43.018414 Gb/s bit rate, in

accordance with the ITU-T G.709 Draft Recommendation.

INFINIBAND selects a reference-receiver ﬁlter for the 2.500 Gb/s bit rate, in

accordance with the InﬁniBand standard.

OC1 selects a reference-receiver ﬁlter for the 51.84 Mb/s bit rate, in accordance

with the Sonet/SDH OC-1/STM-0 standard.

OC3 selects a reference-receiver ﬁlter for the 155.52 Mb/s bit rate, in accordance

with the Sonet/SDH OC-3/STM-1 standard.

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Commands Listed in Alphabetical Order

OC9 selects a re

ference-receiver ﬁlter for the 466.56 Mb/s bit rate, in accordance

with the Sonet/SDH OC-9/STM-3 standard.

OC12 selects a

reference-receiver ﬁlter for the 622.08 Mb/s bit rate, in accordance

with the Sonet/SDH OC-12/STM-4 standard.

OC18 selects

a reference-receiver ﬁlter for the 933.12 Mb/s bit rate, in accordance

with the Sonet/SDH OC-18/STM-6 standard.

OC24 selects

a reference-receiver ﬁlter for the 1.24416 Gb/s bit rate, in accordance

with the Sonet/SDH OC-24/STM-8 standard.

OC36 select

s a reference-receiver ﬁlter for the 1.86624 Gb/s bit rate, in accordance

with the Sonet/SDH OC-36/STM-12 standard.

OC48 select

s a reference-receiver ﬁlter for the 2.48832 Gb/s bit rate, in accordance

with the Sonet/SDH OC-48/STM-16 standard.

OC96 selec

ts a reference-receiver ﬁlter for the 4.97664 Gb/s bit rate, in accordance

with the Sonet/SDH OC-96/STM-32 standard.

OC192 sel

ects a reference-receiver ﬁlter for the 9.95328 Gb/s bit rate, in

accordance with the Sonet/SDH OC-192/STM-64 standard.

OC768 sel

ects a reference-receiver ﬁlter for the 39.8131 Gb/s bit rate, in

accordance with the Sonet/SDH OC-768/STM-256 standard.

Examples

CH<x>:OFFSet

CH1:FILTER:VALUE NONE disables the ﬁltering for Channel 1.

CH2:FILTER:VALUE? might return CH2:FILTER:VALUE OC12, indicating that

the Sonet/SDH OC-12/STM-4 ﬁlter is enabled for Channel 2.

This command sets or queries the vertical offset for the speciﬁed channel. The channel is speciﬁed by x, which can be 1 through 8. Setting an offset with this command is the equivalent to entering a value in the Offset control in the Channel section of the Vertical Setup dialog box or adjusting the front-panel Vertical OFFSET knob.

Channel offset adjusts the vertical acquisition window (moves the DC level around which the signal is sampled) for the selected channel. Visualize offset as scrolling the acquisition window towards the top of a large signal (or one with a positive DC bias) for increased offset values and scrolling towards the bottom for decreased offset values. Optimal vertical accuracy (of the entire signal) is obtained when the offset is set to the average DC bias of the input signal (that is, when it centers the signal around the input dynamic range of the sampling module).

The range and resolution of offset values for a given channel is dependent on multiple factors: the sampling module type (speciﬁcally, its input dynamic range),

CSA/TDS8000 Series Programmer Manual 2-83

Commands Listed in Alphabetical Order

Group

Syntax

Related Commands

Arguments

Examples

the probe type ( TDR is active), and the scale.

For more infor Vertical Offset in the online help for your instrument.

Vertical

CH<x>:OFFSet <NR3> CH<x>:OFFSet?

CH<x>:POSition

NR3 is the offset value for the speciﬁed channel; the range is ±1.6 V.

CH4:OFFSET 2.0E-3 sets the offset for Channel 4 to 2 mV.

CH3:OFFSET? might return CH3:OFFSET 0.100000000000, indicating that the

offset for Channel 3 is set to 100 mV.

if attached), the external attenuation factor, the selected units (if

mation on how offset ranges are determined, refer to the topic

CH<x>:POSition

Related Commands

Arguments

Group

Syntax

This command sets or queries the vertical position of the speciﬁed channel. The channel is speciﬁed by x, w equivalent to setting Position in the Setup section o f the Vertical Setup dialog box or adjusting the front-panel Vertical Position knob.

Increasing the position value of a waveform causes the waveform to move up, and decreasing the position v alue causes the waveform to move down. Position adjusts only the display position of a channel, math, or reference waveform.

Vertical

CH<x>:POSition <NR3> CH<x>:POSition?

CH<x>:OFFSet

<NR3> is the position value in divisions from the center graticule. The range is

±5 divisions for channels and ±1000 divisions for math and reference waveforms.

hich can be 1 through 8. Sending this command is the

2-84 CSA/TDS8000 Series Programmer Manual

Commands Listed in Alphabetical Order

CH<x>:SCAle

Examples

CH2:POSITION 1

above the center graticule.

CH1:POSITION

that the current position of Channel 1 is 2 divisions below the center graticule.

This command sets or queries the vertical scale of the channel speciﬁed by x, which can be 1 through 8. Sending this command is the equivalent to setting a value in the Scale control in the Setup section of the Vertical Setup dialog box or adjusti

Channel scale, expressed as the per division setting, adjusts the display size for the selected c this control provides graphical scaling only; the control has no effect on the input vertical acquisition hardware. Increasing the scale causes the waveform to be displayed smaller. Decreasing the scale causes the waveform to be displayed larger.

The range and resolution of scale values for a given channel is dependent on multiple factors: the sampling module type (speciﬁcally, its input dynamic range), the probe type (if attached), the external attenuation factor, and the selected units (if TDR

ng the front-panel Vertical SCALE knob.

hannel. Similar to the scale control for reference and math waveforms,

is active).

.3E+00

might return CH1:POSITION -2.000000000000, indicating

positions the Channel 2 input signal 1.3 divisions

Group

Syntax

Related Commands

Arguments

For more information on how scale ranges are determined, refer to the topic

al Scale in the online help for your instrument.

Vertic

Channel scale changes have an effect on the allowable offset range for the

el. In general, as the vertical scale value is reduced, the amount of allowable

chann offset increases.

For mo Offset in the online help for your instrument.

Vertical

CH<x>:SCAle <NR3> CH<x>:SCAle?

CH<x>:OFFSet, CH<x>:POSition

NR3 is the vertical channel scale in units per division.

re information on how scale affects offset range, refer to the topic Vertical

CSA/TDS8000 Series Programmer Manual 2-85

Commands Listed in Alphabetical Order

Examples

CH4:SCALE 5.0E

CH2:SCALE? might return CH2:SCALE 0.02000000000, indicating that the

current scale

CH<x>:UNIts

This command sets o r queries the units for the speciﬁed channel. The channel is speciﬁed by x, which can be 1 through 8. Sending this command is the equivalent to setting the Units control in the Channel section of the Vertical Setup dialog box. You can selected channel. If you set this value to AUto, the instrument automatically selects the units. If you set this value to Volt, Watt, or Amp, the instrument will apply these units to the vertical axis.

The selections in this control are Auto, Volt, Amp, and Watt. When you change the units setting, all vertical units are reported as speciﬁed and no data transformations take place.

For TDR waveforms, the Units control in the Vertical Setup dialog box is not active. Use the TDR:CH<x>:UNIts command to set and query units in TDR. The units available are Rho, Ohm, and Volt. When you c hange units of TDR wavefor

-01

sets the scale for Channel 4 to 500 mV per division.

setting of Channel 2 is 20 mV per division.

use this control to override the automatic selection of units for the

ms, data transformations take place. The default is Rho.

Group

Syntax

Arguments

Examples

Vertical

CH<x>:UNIts {AUto|Volt|Watt|Amp} CH<x>:UNIts?

AUTO sets the units for the speciﬁed channel so that they are automatically

determined by the instrument (depends on the probe attached to the speciﬁed channel).

Volt sets the vertical-axis units for the speciﬁed channel to volts.

Watt sets the vertical-axis units for the speciﬁed channel to watts.

Amp sets the vertical-axis units for the speciﬁed channel to amperes.

CH4:UNITS AUTO sets the vertical axis units for Channel 4 so that they are

determined automatically by the instrument.

CH1:UNITS? might return CH1:UNITS VOLT, indicating that the vertical-axis

units for Channel 1 are set to volts.

2-86 CSA/TDS8000 Series Programmer Manual

Commands Listed in Alphabetical Order

CH<x>:WFMLab

Related Commands

Arguments

Examples

Group

Syntax

This command sets or queries the label associated with the channel waveform speciﬁed.

Vertical

CH<x>:WFMLabel <Qstring> CH<x>:WFMLabel?

MATH<x>:WFMLabel, REF<x>:WFMLabel

Qstring sets the label for the waveform.

CH1:WFMLABEL "MY CH1 WAVEFORM" sets the label for CH1 to be "My CH1

waveform," which is the label displayed with the waveform when it is displayed on screen.

CH1:WFMLABEL? might return CH1:WFMLABEL "MY CH1 WAVEFORM",

indicating that the label for channel 1 is set to "My CH1 waveform".

CH<x>:WLENgth:LIST? (Query Only)

This query only command returns a list of the available wavelengths for the channel speciﬁed by x, which can be 1 through 8. (Generally, only optical modules in CH1 or CH2 have wavelength selections.) The returned list contains the actual wavelengths available for the channel. Use the CH<x>:WLENgth:VALue command to set a value from the list.

Group

Syntax

Related Commands

Examples

Vertical

CH<x>:WLENgth:LIST?

CH<x>:WLENgth:VALue

CH2:WLENGTH:LIST? might return CH2:WLENLIST FACTORY,1550,1310,USER,1330

Channel 2.

, indicating the available wavelengths for

CSA/TDS8000 Series Programmer Manual 2-87

Commands Listed in Alphabetical Order

CH<x>:WLENgt

Related Commands

Arguments

Examples

h:VALue

Group

Syntax

This command sets or queries the wavelength for the channel speciﬁed by x, which can be 1 through 8. (Generally, only optical modules in CH1 or CH2 have ﬁlter select the available wavelengths.

Vertical

CH<x>:WLENgth:VALue <NR3> [USER|FACTory] CH<x>:WLENgth:VALue?

CH<x>:WLENgth:LIST?

NR3 speciﬁes the wavelength.

USER must follow a user-calibrated value.

FACTory must follow a factory-calibrated v alue.

CH1:WLENGTH:VALUE 1310 sets the Channel 1 wavelength to 1310.

ions.) You can use the CH<x>:WLENgth:LIST? query to d etermine

*CLS (No Query Form)

CH2:WLENGTH:VALUE? might return CH2:WLENGTH:VALUE 1550, indicating

that the wavelength for Channel 2 is set to 1550.

This command (no query form) clears the following status data structures of the instrument:

Event Queue

Standard Event Status Register (SESR)

Status Byte Register (except the MAV bit; see below)

If the *CLS command immediately follows an <EOI>, the Output Queue and MAV bit (Status Byte Register bit 4) are also cleared. MAV indicates information is in the output queue. The device clear (DCL) GPIB control message will clear the output queue and thus MAV. *CLS does not clear the output queue or MAV. (For more information about these registers and bits, and of event handling in general, see the Status and Events Overview and its subtopics.)

*CLS can suppress a service request that is to be generated by an *OPC. This will happen if a hardcopy output or single sequence acquisition operation is still being processed when the *CLS command is executed.

2-88 CSA/TDS8000 Series Programmer Manual

Tektronix CSA8000B, CSA8000, TDS8000, TDS8000B, TDS8200 Programmer Manual

Specifications and Main Features

Frequently Asked Questions

User Manual