Tektronix Series 2200 Multichannel Programmable DC Power Supplies Programming Reference manual

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Series 2200

Multichannel Programmable DC Power Supplies

Programming Technical Reference

2220S-907-01 Rev. B / Dec 2013

ECNEDIFNOCFOERUSAEMRETAERGA

Multichannel Programmable DC Power Supplies

Series 2200

Programming Technical Reference

Cleveland, Ohio, U.S.A.

Any unauthorized reproduction, photocopy, or use the information herein, in whole or in part,

without the prior written approval of Keithley Instruments, Inc. is strictly prohibited.

All Keithley Instruments product names are trademarks or registered trademarks of Keithley

Instruments, Inc. Other brand names are trademarks or registered trademarks of their respective

holders.

Document number: 2220S-907-01 Rev. B / Dec 2013

Safety precautions

The following safety precautions should be observed before using this product and an y associated instrumentation. Although some instruments and accessories would normally be used with nonhazardous voltages, there are situations where hazardous conditions may be present.

This product is intended for use by qualified personnel who recognize shock hazards and are familiar with the safety precautions required to avoid possible injury. Read and follow all install a tion, operation, and maintenance information carefully before using the product. Refer to the user documentation for complete product specifications.

If the product is used in a manner not specified, the protection provided by the product warranty may be impaired. The types of product users are:

Responsible body is the individual or group responsible for the use and maintenance of equipment, for ensuring that the equipment is operated within its specifications and operating limits, and for ensuring that operators are adequately trained.

Operators use the product for its intended function. They must be trained in electrical safety procedures and proper use of the instrument. They must be protected from electric shock and contact with hazardous live circuits.

Maintenance personnel perform routine procedures on the product to keep it operating properly, for example, setting the line voltage or replacing consumable materials. Maintenance procedures are described in the user documentation. The procedures explicitly state if the operator may perform them. Otherwise, they should be performed only by service personnel.

Service personnel are trained to work on live circuits, perform safe installations, and repair products. Only properly trained service personnel may perform installation and service procedures.

Keithley Instruments products are designed for use with electrical signals that are measurement, control, and data I/O connections, with low transient overvoltages, and must not be directly connected to mains voltage or to voltage sources with high transient overvoltages. Measurement Category II (as referenced in IEC 60664) connections require protection for high transient overvoltages often associated with local AC mains connections. Certain Keithley measuring inst ruments may be connected to mains. These instruments will be marked as category II or higher.

Unless explicitly allowed in the specifications, operating manual, and instrument labels, do not connect any instrument to mains. Exercise extreme caution when a shock hazard is present. Lethal voltage may be present on cable connector jacks or test

fixtures. The American National Standards Institute (ANSI) states that a shock hazard exists when voltage levels greater than 30 V RMS, 42.4 V peak, or 60 VDC are present. A good safety practice is to expect that hazardous voltage is present in any unknown circuit before measuring.

Operators of this product must be protected from electric shock at all times. The responsible body must ensure that operators are prevented access and/or insulated from every connection point. In some cases, connections must be exposed to potential human contact. Product operators in these circumstances must be trained to protect themselves from the risk of electric shock. If the circuit is capable of operating at or above 1000 V, no conductive part of the circuit may be exposed.

Do not connect switching cards directly to unlimited power circuits. They are intended to be used with impedance-limited sources. NEVER connect switching cards directly to AC mains. When connecting sources to switching cards, install protective devices to limit fault current and voltage to the card.

Before operating an instrument, ensure that the line cord is connected to a properly-grounded power receptacle. Inspect the connecting cables, test leads, and jumpers for possible wear, cracks, or breaks before each use.

When installing equipment where access to the main power cord is restricted, such as rack mounting, a separate main input power disconnect device must be provided in close proximity to the equipment and within easy reach of the operator.

For maximum safety, do not touch the product, test cables, or any other instruments while power is applied to the circuit under test. ALWAYS remove power from the entire test system and discharge any capacitors before: connecting or disconnecting cables or jumpers, installing or removing switching cards, or making internal changes, such as installing or removing jumpers.

Do not touch any object that could provide a current path to the common side of the circuit under test or power line (earth) ground. Always make measurements with dry hands while standing on a dry, insulated surface capable of withstanding the voltage being measured.

For safety, instruments and accessories must be used in accordance with the operating instructions. If the instruments or accessories are used in a manner not specified in the operating instructions, the protection provided by the equipment may be impaired.

Do not exceed the maximum signal levels of the instruments and accessories, as defined in the specifications and operating information, and as shown on the instrument or test fixture panels, or switching card.

When fuses are used in a product, replace with the same type and rating for continued protection against fire hazard. Chassis connections must only be used as shield connections for measuring circuits, NOT as protective earth (safety ground)

connections. If you are using a test fixture, keep the lid closed while power is applied to the device under test. Safe operation requires the use

of a lid interlock.

screw is present, connect it to protective earth (safety ground) using the wire recommended in the user documentation.

If a

The user documentation in all cases where the symbol is marked on the instrument.

The contact with these voltages.

The symbol on an instrument shows that the surface may be hot. Avoid personal contact to prevent burns.

The

If this symbol is on a product, it indicates that mercury is present in the display lamp. Please note that the lamp must be properly disposed of according to federal, state, and local laws.

The WARNING heading in the user documentation explains dangers that might result in personal injury or death. Always read the associated information very carefully before performing the indicated procedure.

The CAUTION heading in the user documentation explains hazards that could damage the instrument. Such damage may invalidate the warranty.

Instrumentation and accessories shall not be connected to humans. Before performing any maintenance, disconnect the line cord and all test cables. To maintain protection from electric shock and fire, replacement components in mains circuits — including the power

transformer, test leads, and input jacks — must be purchased from Keithley Instruments. Standard fuses with applicable national safety approvals may be used if the rating and type are the same. Other components that are not safety-related may be purchased from other suppliers as long as they are equivalent to the original component (note that selected parts should be purchased only through Keithley Instruments to maintain accuracy and functionality of the product). If yo u are unsure about the applicability of a replacement component, call a Keithley Instruments office for information.

symbol on an instrument means caution, risk of danger. The user must refer to the operating instructions located in the

symbol on an instrument means caution, risk of electric shock. Use standard safety precautions to avoid personal

symbol indicates a connection terminal to the equipment frame.

To clean an instrument, use a damp cloth or mild, water-based cleaner. Clean the exterior of the instrument only. Do n ot app ly cleaner directly to the instrument or allow liquids to enter or spill on the instrument. Products that consist of a circuit board with no case or chassis (e.g., a data acquisition board for installation into a computer) should never require cleaning if handled according to instructions. If the board becomes contaminated and operation is affected, the board should be returned to the factory for proper cleaning/servicing.

Safety precaution revision of January 2013.

-907-01 Rev. B/December 2013

2220S

Table of Contents

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

Welcome ........................... ................................ .................................. .......... iii

Products.............................. .................................. ................................ ........ iii

Extended Warranty ....................... ................................ ................................ .... iv

Contact Information .......................................................................................... iv

Getting Started

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

Using the USB interface .................................................................................... 1-1

Using the GPIB interface ................................ .................................. ................. 1-1

Command Timing........................................... ................................ ................. 1-2

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

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

Command Entry.............................................................................................. 2-3

and Groups ................................................................................................ 2-7

Comm

Status Commands............................................................................................ 2-7

Save and Recall Commands ................................................................................ 2-8

System Commands ........................... ................................ ............................... 2-9

Diagnostic Commands ...................................................................................... 2-9

Synchronization Commands............................... ................................ ................. 2-9

Trigger Commands ... ................................ ................................ ..................... 2-10

Measurement Commands ................................................................................. 2-11

Source Commands........................ ................................ ................................ . 2-11

Channel Combination Commands ....................................................................... 2-12

Display Commands ........................................................................................ 2-12

Commands Listed in Alphabetical Order ................... .................................. ............... 2-13

Status and Events

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

Status Reporting Structure.................................................................................. 3-1

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

Queues ........................................................................................................ 3-9

Messages and Codes.................... ................................ .................................. . 3-10

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual i

Table of Contents

Appendices

Appendix A: ASCII Code Chart ............................................................................... A-1

Appendix B: Programming Examples......................................................................... B-1

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

ii Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Preface

Welcome

Thank you for using a Keithley Instruments product. The Series 2200 Multichannel Programmable DC Power Supplies are ﬂexible DC sources designed to power a wi offer three power channels and the model 2220-30-1 and its variants provide two channels. The output channels on both models are independent and isolated, allowing you to power circuits with different references or polarities. Each channel can be enabled or disabled as your application requires. All outputs feature remote sense capability which can be used to reduce the effect of lead resistan Basic current accuracy is 0.1% for all channels and linear regulation delivers low noise – less than 3 mVp-p. Flexible display modes make it easy to use the two 30 V outputs in combination, and the USB interface makes it easy to build PC-based systems without converters or special cables. The G versions of each model include a GPIB interface in combination with the USB interface.

These compact power supplies cover a wide range of applications without covering a lot of bench space. Versions of these power supplies are available for

t 100 VAC nominal line voltage which is common in Japan. These versions

use a are indicated by the "J" sufﬁx.

de range of applications. The model 2230-30-1 and its variants

ce, delivering 0.03% basic voltage accuracy even when using long leads.

Products

This manual contains information about the following products:

ModelDescription

2220-30-1

Programmable Dual Channel DC Power Supply

2220G-30-1Programmable Dual Channel DC Power Supply with GPIB Interface

2220J-30-1

Programmable Dual Channel DC Power Supply for Japan

2220GJ-30-1Programmable Dual Channel DC Power Supply with GPIB Interface for Japan

2230-30-1

Triple Channel Programmable DC Power Supply

2230G-30-1Programmable Triple Channel DC Power Supply with GPIB Interface

2230J-30-1

Triple Channel Programmable DC Power Supply for Japan

2230GJ-30-1Programmable Triple Channel DC Power Supply with GPIB Interface for Japan

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual iii

Preface

Extended Warranty

Contact Information

Additional years of warranty coverage are available on many products. These valuable contracts protect you from unbudgeted service expenses and provide additional years of protection at a fraction of the price of a repair. Extended warranties are available on new and existing products. Contact your local Keithley Instrument

s representative for details.

If you have following sources:

1. Keithley

2. Keithley web forum (http://forum.keithley.com)

3. Call Keithley Instruments corporate headquarters (toll-free inside the U.S. and

Canada only) at 1-888-KEITHLEY (1-888-534-8453), or from outside the U.S. at Instruments website (http://www.keithley.com).

any questions after reviewing this information, please use the

Instruments website (http://www.keithley.com)

+1-440-248-0400. For worldwide contact numbers, visit the Keithley

iv Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Getting Started

Using the USB interface

Your power supply has a USB 2.0 high-speed device port to control the power supply using the USBTMC protocol. The USBTMC protocol allows USB devices to communica

If you have a G-version, you can also remotely communicate between your power supply and PC over GPIB.

Start by connecting an appropriate USB cable between the USB 2.0 high-speed device port on the rear panel of your power supply and a PC.

In order for the PC to recognize the power supply, a USBTMC driver must be installed on the PC. A USBTMC driver can be installed on your PC by installing a virtual instrument communications API like NIVISA. This VISA is available for download from the Keithley or National Instruments Web sites. Once the USBTMC driver is loaded, your PC will establish communication with the power supply upon USB cable connection.

For further remote control and/or programming use, other software applications may be needed in addition to a

te using IEEE-488.2 style messages.

VISA and the USBTMC driver.

Using the GPIB interface

Start by connecting an appropriate GPIB cable between the power supply and either a PC or another instrument with a GPIB interface if the power supply is in a multi-instrument system.

It is recommended that NIVISA be installed on your PC for the GPIB interface for maximum programming ﬂexibility.

To change GPIB address

settings

Your power supply must have a unique device address to function properly. The default setting for the GPIB conﬁguration is Communication Address 1. If there is more than one GPIB instrument on the bus, you will need to change the default setting on the power supply. To change the GPIB address settings, do the following:

1. Push the Menu button on the instrument front-panel to access the main menu.

2. Press the up arrow key until you see User Settings andthenpresstheEnter

3. Press the up or down arrow key until you see Communication Port and

4. You can now change the address of your GPIB port.

button.

then press the Enter button.

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 1-1

Getting Started

Command Timing

The power suppl controller.

The average time it takes to both send and receive every command is approximately 20 ms. In the case of more complex commands, more time may be required to complete transmission.

y is now set up for bidirectional communication with your

1-2 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Command Syntax

You can control the power supply through the USB interface or the GPIB interface (G-version instruments only) using commands and queries.

This section describes the syntax these commands and queries use and the conventions the power supply uses to process them. The commands and queries themselves Groups.)

are listed by group and alphabetically. (See page 2-7, Command

You tra ns m Standard Code for Information Interchange (ASCII) character encoding. Appendix A contains a chart of the ASCII character set.

The Backus Naur Form (BNF) notation is used in this manual to describe commands and queries. (See Table 2-1.)

Table 2-1: BNF notation

Symbol Meaning

::=

| Exclusive OR

{ } Group; one element is required

[] .. .

( ) Comment

Command and Query Structure

Commands consist of set commands and query commands (usually simply called commands and queries). Commands change power supply settings or perform a speciﬁc action. Queries cause the power supply to return data and information about its status.

it commands to the power supply using the enhanced American

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 is the same as the set form except that it ends with a question mark. For example, the set command STATus:OPERation:ENAble has a query form STATus:OPERation:ENAble?. Not all commandshavebothasetandaquery form; some commands are set only and some are query only.

A command message is a command or query name, followed by any information the power supply needs to execute the command or query. Command messages consist of ﬁve different element types. (See Table 2-3.)

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-1

Command Syntax

Table 2-2: Comm

Symbol Meaning

<Argument

<Comma> A single c

<Space>

and message elements

The basic command name. If the header ends with a question mark, the command is a query. The header may begin with a colon (:) character; i beginning colon is required. The beginning colon can never be used with command headers beginning with a star (*).

A header subfunction. Some command headers have only one mnemonic. I always separated from each other by a colon (:) character.

A quantity Not all commands have an argument, while other commands have multiple arguments. Arguments are separated from the header by a <Space>. A

It may optionally have white space characters before and after the comma.

A white space character between command header and argument. It may optionally consist of multiple white space characters.

f the command is concatenated with other commands the

f a command header has multiple mnemonics, they are

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

rguments are separated from each other by a <Comma>.

omma between arguments of m ultiple-argument commands.

The following ﬁgure shows the ﬁve command message elements.

Commands

Queries

Figure 2-1: Command message elements

Commands cause the power supply to perform a speciﬁc function or change one of its settings. Commands have the structure:

[:]<Header>[<Space><Argument>[<Comma><Argument>]...]

A command header is made up of one or more mnemonics arranged in a hierarchical or tree structure. The ﬁrst mnemonic is the base or root of the tree and each subsequent mnemonic is a level or branch off of 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.

Queries cause the power supply to return information about its status or settings. Queries have the structure:

[:]<Header>

[:]<Header>[<Space><Argument>[<Comma><Argument>]...]

2-2 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Command Syntax

Query Responses

Command Entry

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 speciﬁed branch or level.

When a query is sent to the power supply, only the values are returned. When the returned value is a mnemonic, it is noted in abbreviated format, as shown in the following table.

Table 2-3: Query response examples

Query Response

MEASure:VOLTage:DC?

SOURce:FUNCtion:MODE?

5.0011

LIST

Follow these general rules when entering commands:

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).

SCPI Commands and

Queries

The power supply ignores commands that consists of just a combination of white space characters and line feeds.

The power supply uses a command language based on the SCPI standard. The SCPI (Standard Commands for Programmable Instruments) standard was created by a consortium to provide guidelines for remote programming of instruments. These guidelines provide a consistent programming environment for instrument control and data transfer. This environment uses deﬁned programming messages, instrument responses and data formats that operate across all SCPI instruments, regardless of manufacturer.

The SCPI language is based on a hierarchical or tree structure that represents a subsystem. The top level of the tree is the root node; it is followed by one or more lower-level nodes. (See Figure 2-2.)

Figure 2-2: Example of SCPI subsystem hierarchy tree

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-3

Command Syntax

Message Terminators

Parameter types

You can create c

ommands and queries from these subsystem hierarchy trees. Commands specify actions for the instrument to perform. Queries return measurement data and information about parameter settings.

This manual u

ses the term <EOM> (End of message) to represent a message

terminator.

USB End of Message (EOM) terminators. See the USB Test a nd Measurement Class Speciﬁcation (USBTMC) section 3.2.1 for details. The power supply terminates messages by setting the EOM bit in the USB header of the last transfer

of a message to the host (USBTMC Speciﬁcation section 3.3.1), and by

terminating messages with a LF.

When rec

eiving, the power supply expects a LF and an asserted EOM bit as a message terminator. When using the GPIB interface, the power supply expects a line feed (LF) as the message terminator.

Many po

wer supply commands require parameters. Parameters are indicated by angle brackets, such as <ﬁle_name>. There are several different types of parameters, as listed in the following table. The parameter type is listed after the parameter. Some parameter types are deﬁned speciﬁcally for the power supply command set and some are deﬁned by SCPI. (See Table 2-4.)

Table 2-4: Types of parameters

Parameter type Description Example

boolean Boolean numbers or values ON or ≠ 0

OFF or 0

discrete

NR1 numeric Integers 0, 1, 15, -1

NR2 numeric Decimal numbers 1.2, 3.141516, -6.5

NR3 numeric Floating point numbers 3.1415E-9, -16.1E5

NRf numeric

string

A list of speciﬁc values

Flexible decimal number that maybetypeNR1,NR2,orNR3

Alphanumeric characters (must be within quotation marks)

MIN, MAX

See NR1, NR2, NR3 examples in this table

“Testing 1, 2, 3”

2-4 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Command Syntax

Abbreviating Commands,

Queries, and Parameters

Chaining Commands and

Queries

You can abbrevi short form. This manual shows these commands as a combination of upper and lower case letters. The upper case letters indicate the accepted short form of a command, as shown in the following ﬁgure. The accepted short form and the long form are equivalent and reques t the same action of the instrument.

Figure 2-3: Example of abbreviating a command

You can chain several commands or queries together into a single message. To create a chained message, ﬁrst create a command or q (;), and ﬁnally add more commands or queries and semicolons until you are done. If the command following a semicolon is a root node, precede it with a colon (:). The following ﬁgure illustrates a chained message consisting of several commands and queries. The chained message should end in a command or query, not a semicolon. Responses to any queries i n your message are separated by semicolons.

ate most SCPI commands, queries, and parameters to an accepted

uery, then add a semicolon

Figure 2-4: Example of chaining commands and queries

If a command or query has the same root and lower-level nodes as the previous command or query, you can omit these nodes. In the following ﬁgure, the second command has the same root node (STAT:QUES) as the ﬁrst command, so these nodes can be omitted.

Figure 2-5: Example of omitting root and lower level nodes

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-5

Command Syntax

General Rules for Using

SCPI Commands

The following a

re three general rules for using SCPI commands, queries, and

parameters:

You c an us e s in

gle (‘ ’) or double (“ ”) quotation marks for quoted strings, b ut

you cannot use both types of quotation marks for the same string.

correct

incorrect “This strin

“This string uses quotation marks correctly.”

‘This string also uses quotation marks correctly.’

g does not use quotation marks correctly.’

You can use upper case, lower case, or a mixture of both cases for all commands, queries, and parameters.

:SOURCE:FREQUENCY 10MHZ

is the same as

:source:frequency 10mhz

and

:SOURCE:frequency 10MHZ

NOTE. Q

uoted strings are case sensitive.

No embedded spaces are allowed between or within nodes.

correct

incorrect

:OUTPUT:FILTER:LPASS:FREQUENCY 200MHZ

:OUTPUT: FILTER: LPASS:FREQUENCY 200MHZ

2-6 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Command Groups

This manual lists the power supply commands in two ways. First, it presents them by functional groups. Then, it lists them alphabetically. The functional group list st (See page 2-13.)

The power supply interface conforms to Keithley standard codes and formats except where noted. The GPIB interface also conforms to IEEE Std 488.2–1987 except where noted. The USB interface also conforms to USB Test and Measurement Class, Subclass USB488 Speciﬁcation, except where noted. Arguments are not mentioned in the group command descriptions, but are listed under the commands in the Commands Listed in Alphabetical Order section of this manual. (See page 2 -13.)

Status Commands

Status commands let you determine the status of the power supply and control events.

Several commands and queries are common to all devices on the GPIB or USB bus. These commands and queries are deﬁned by IEEE Std. 488.2-1987 and Tek Standard Codes and Formats 1989, and begin with an asterisk (*) character.

arts below. The alphabetical list provides detail on each command.

Table 2-5: Status commands

Command Description

*CLS Clear all event registers and queues.

*ESE Set/query standard event status enable register.

*ESR?

*IDN? Return identiﬁcation information in IEEE 488.2 notation.

*RST

*PSC Set/query power-on status clear.

*SRE Set/query service request enable register.

*STB?

STATus:QUEStionable:INSTrument[:EVENt]?

STATus:QUEStionable:INSTrument:ENABle Set/query questionable enable register. This parameter

STATus:QUESTionable:INSTrument:ISUMmary<x>:[EVENt]? Return questionable event register summary for channel x,

STATus:QUEStionable:INSTrument:ISUMmary<x>:ENABle Set/query questionable enable register summary for channel x,

Return standard event status register.

Resets to known settings, but does not purge stored settings.

Read status byte.

Return questionable event register.

determines which bit of the quest event register is set to 1. If a QUES condition changes, the QUES bit of status byte register will be set to 1.

where <x> is 1, 2, or 3.

where <x> is 1, 2, or 3. This parameter determines which bit of the quest event register is set to 1. If a QUES condition changes, the QUES bit of status byte register will be set to x.

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-7

Command Groups

Table2-5:Statuscommands(cont.)

Command Description

STATus:QUEStionable:INSTrument:ISUMmary<x>:CONDition? Return questionable condition register summary for channel

x, where <x> is 1, 2, or 3. When a bit of the quest condition changes, the corresponding bit value in the quest event register will be set to x.

STATus:QUEStionable:ENABle Set/query questionable enable register. This parameter

determines which bit of the quest event register is set to 1. If a QUES condition changes, the QUES bit of status byte register will be set to 1.

STATus:QUEStionable[:EVENt]?

STATus:OPERation:INSTrument[:ENABle]? Set/query operation enable register. The parameter determines

STATus:OPERation:INSTrument[:EVENt]?

STATus:OPERation:INSTrument[:EVENt]? Queries the contents of the operation instrument event register

STATus:OPERation:INSTrument[:ENABle]? Queries the contents of the operation instrument enable register

STATus:OPERation:INSTrument:ISUmmary<x>[:EVENt]? Return operation event register for channel x, where <x> is 1,

STATus:OPERation:INSTrument:ISUmmary<x>:ENABle Set/query operation enable register for channel x, where <x> is

STATus:OPERation:INSTrument:ISUMmary<x>:CONDition? Return operation condition register for channel x, where <x> is

Return questionable event register.

which bit value of quest event register is set to 1. If a OPER condition changes, the OPER bit of the status byte register will be set to 1.

Return operation event register.

(OIEVR).

(OIENR).

2, or 3.

1, 2, or 3. The parameter determines which bit value of quest event register is set to 1. If a OPER condition changes, the OPER bit of the status byte register will be set to 1.

1, 2, or 3. When a parameter of the operation condition register changes, the corresponding bit in the operation event register will be set to 1.

Save and Recall Commands

Save and recall commands allow you to save the active settings to one of the settings memories within the power supply, and recall those settings at a later time.

Table 2-6: Save and recall commands

Header Description

*SAV Save instrument setting to setup memory

*RCL Recall instrument setting from setup memory

2-8 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Command Groups

System Comman

Table 2-7: System commands

Header Description

SYSTem:POSetup Set or query power-on parameters

SYSTem:MODUle? Queries the module of the power supply

SYSTem:VERSion? Return SCPI version information

SYSTem:MODUle? Return error code and error information

SYSTem:KEY Set or query key operation

SYSTem:REMote Set or query remote mode

SYSTem:RWLock Set to remote mode and lock front-panel

SYSTem:LOCal Set to front-panel control mode

Diagnostic Commands

The po is functioning as expected. A table of error codes that may be returned by the self test are given in the Messages and Codes section. (See page 3-10.)

Table 2-8: Diagnostic commands

wer supply includes a self test function that may be used to conﬁrm that it

Header Description

*TST? Perform self-test and return result status

Synchronization Commands

Table 2-9: Synchronization commands

Header Description

*OPC Set/query operation complete

*WAI

Wait to continue

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-9

Command Groups

Trigger Comma

Table 2-10: Trigger commands

Header Description

TRIGger[:IMMediate]

*TRG Generates a trigger event.

[SOURce:]VOLTage:TRIGgered[:IMMediate] Set or query the trigger voltage.

[SOURce:]CURRent:TRIGgered[:IMMediate] Set or query the trigger current.

INSTrument:COUPle[:TRIGger] Set or query the channel that will respond the trigger command.

nds

Trigger commands are used to determine the timing of list mode sequences.

Forces an immediate trigger event.

2-10 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Command Groups

Measurement C

ommands

Measurement commands are used to query parameters. The MEASure commands initiate and execute a complete measurement cycle and are recommended for measuring vo

ltage and current at the outputs of the power supply.

FETCh

commands do not initiate a new measurement cycle but rely on measurements stored in the communication buffers of the power supply. The

FETCh commands

are provided for voltage and current measurements to maintain compatibility with other instruments. Output power, however, is only available using a command.

Table 2-11: Measurement commands

Command Description

MEASure[:SCALar][:VOLTage][:DC]?

MEASure[:SCALar]:POWer[:DC]?

MEASure[:SCALar]:CURRent[:DC]?

FETCh[:SCALar]:CURRent[:DC]? Query the output current stored in the communications buffer

FETCh[:SCALar]:POWer[:DC]? Query the output power stored in the communications buffer

FETCh[:SCALar]:VOLTage[:DC]? Query the output voltage stored in the communications buffer

Initiate a measurement and query the measured output voltage

Initiate a measurement and query the measured output current

FETCh

Source Commands

These commands allow you to set various output parameters. Some of the commands are used to conﬁgure protection functions like output timers and Max Voltage.

Table 2-12: Source commands

Command Description

[SOURce:]CURRent[:LEVel][:IMMediate][:AMPLitude] Set or query the current value in units of A or mA.

[SOURce:]CURRent[:LEVel]:UP[:IMMediate][:AMPLitude] Set the current level to increase a step.

[SOURce:]CURRent[:LEVel]:DOWN[:IMMediate][:AMPLitude] Set the current level to decrease a step.

[SOURce:]CURRent[:LEVel][:IMMediate]:STEP[:INCRement] Set or query the current step value.

[SOURce:]OUTPut:TIMer[:STATe] Set or query the state of the output timer.

[SOURce:]OUTPut[:STATe][:ALL] Set or query power supply output on or off.

[SOURce:]OUTPut:TIMer:DELay Set or query the time duration of output timer.

[SOURce:]VOLTage[:LEVel][IMMediate][:AMPLitude] Set or query voltage level.

[SOURce:]VOLTage[:LEVel]:UP[:IMMediate][:AMPLitude] Set to increase the voltage level by a step.

[SOURce:]VOLTage[:LEVel]:DOWN[:IMMediate][:AMPLitude] Set to decrease the voltage level by a step.

[SOURce:]VOLTage[:LEVel][:IMMediate]:STEP[:INCRement] Set or query the voltage step value.

[SOURce:]VOLTage:LIMit:STATe Set or query enable/disable voltage limit function.

[SOURce:]VOLTage:LIMit[:LEVel] Set or query the maximum output voltage setting.

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-11

Command Groups

Table 2-12: Source commands (cont.)

Command Description

[SOURce:]OUTPut:ENABle Set or query the current channel as enabled or disabled.

[SOURce]:CHANnel:OUTPut:[STATe] Set or query the output status of the current channel.

[SOURce:]APPly Sets voltage and current level and switch channels at the same

time.

[SOURce:]OUTPut:PARallel[:STATe] Sets the parallel state of CH1 and CH2.

[SOURce:]OUTPut:SERies Sets the serial state of CH1 and CH2.

[SOURce:]OUTPut:PON[:STATe] Sets the power supply to power up with its output turned off, or to

return the output to the state it was in when it powered down.

Channel Combination Commands

These commands allow you to set various channel combinations. The commands

n use depends on the number of channels your instrument has.

you ca

Table 2-13: Channel combination commands

Command Description

INSTrument:SELect Switch or query the current channel.

INSTrument:COMbine:SERies Set CH1 and CH2 in series.

INSTrument:COMbine:PARAllel Set CH1 and CH2 in parallel.

INSTrument:COMbine:TRACk Set CH1 and CH2 to track.

INSTrument:COMbine:OFF Remove the combination of channels.

INSTrument:COMbine? Query which channels are combined.

Display Commands

Display commands are used to clear of show particular strings on the instrument display.

Table 2-14: Display commands

Header Description

DISPlay[:WINDow][:STATe] Set or query the display state.

DISPlay[:WINDow]:TEXT[:DATA] Set or query the display to show a particular string.

DISPlay[:WINDow]:TEXT:CLEar Set to clear the characters on the display and returns the display

to normal mode.

2-12 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Commands Listed in Alphabetical Order

You can use commands to either set instrument features or query instrument values. You can use some commands to do both, some only to set and some only to query. Thi Form” included with the command name. It marks query-only commands with a question mark appended to the header, and includes the words “Query Only” in the command name.

This document spells out headers, mnemonics, and arguments with the minimal spelling shown in uppercase. For example, to use the abbreviated form of the

MEASure:SCALar:VOLTage:DC? command, type MEAS:S CAL:VOLT:DC?.

*CLS (No Query Form)

s document marks set-only commands with the words “No Query

The *CLS

Group

Syntax

Related Commands

Status

*CLS

*ESR?, *STB?

DISPlay[:WINDow][:STATe]

Sets or queries the state of the instrument display.

Group

Syntax

Arguments

Display

DISPlay[:WINDow][:STATe] {0|1 |ON|OFF} DISPlay[:WINDow][:STATe]?

0|1|ON|OFF

command clears all event registers and queues.

DISPlay[:WINDow]:TEXT[:DATA]

Sets or queries the state of the instrument display to show a particular string.

Group

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-13

Display

Commands Listed in Alphabetical Order

Syntax

Arguments

DISPlay[:WIND DISPlay[:WINDow]:TEXT[:DATA]?

String with quotes. 48 character length limit.

ow]:TEXT[:DATA] <string>

DISPlay[:WINDow]:TEXT:CLEar (No Query Form)

Clears the characters on the display and then returns the display to normal m ode.

Group

Syntax

Arguments

Display

DISPlay[:WINDow]:TEXT:CLEar

None

*ESE

Sets and queries the bits in the Event Status Enable Register (ESER). The ESER is an eight-bit mask register that determines which bits in the Standard Event Status Register (SESR) will set the ESB bit in the Status Byte Register (SBR). (See page 3-1, Status and Events.)

Group

Syntax

Related Commands

Arguments

Examples

Status

*ESE <mask> *ESE?

*CLS, *ESR?

<mask>::=<NR1> where:

<NR1> is a value in the range from 0 through 255

are set according to this value.

The power-on default for ESER is 0 if *PSC is 1. If *PSC is 0, the ESER maintains its value through a power cycle.

*ESE 145 sets the ESER to binary 10010001, which enables the PON, EXE,

and OPC bits.

. The binary bits of the ESER

2-14 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Commands Listed in Alphabetical Order

*ESR? (Query Only)

Group

Syntax

Related Commands

Returns

*ESE might retu

binary value 10111010.

Returns the contents of the Standard Event Status Register (SESR). *ESR? also clears the SESR (since reading the SESR clears it). (See page 3-1, Status and Events.)

Status

*ESR?

*CLS, *OPC, *SRE,

<NR1>, which is a decimal representation of the contents of the Standard Event

Status Register (SESR).

rn the string

*ESE 186, showing that the ESER contains the

FETCh[:SCAL

Related Commands

Examples

*ESR? might return the value 149, showing that the SESR contains binary

10010101.

ar]:CURRent[:DC]? (Query Only)

This command returns the last measured output current stored in the communications buffer of the power supply. A new measurement is not initiated

and.

Group

Syntax

by this comm

CAUTION. Using this FETCh c ommand may return an old result, which could

adversely affect the accuracy of your test. In most cases, using the MEASure command is recommended. The beneﬁt of the FETCh command is that it provides a result a bit more quickly than the MEASure command.

Measurement

FETCh[:SCALar]:CURRent[:DC]? [CH1|CH2|CH3|ALL]

MEASure[:SCALar]:POWer[:DC]?

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-15

Commands Listed in Alphabetical Order

Returns

Examples

<NR2>, which gi

FETC:CURR? might return 0.09998, which would be the current measured at the

output of the power supply in amperes.

ves is the measured output current in amperes.

FETCh[:SCALar]:VOLTage[:DC]? (Query Only)

This command returns the last measured output voltage stored in the communications buffer of the power supply. A new measurement is not initiated by this command.

Group

Syntax

Related Commands

Returns

Measurement

FETCh[:SCALar]:VOLTage[:DC]? [CH1|CH2|CH3|ALL]

MEASure[:SCALar][:VOLTage][:DC]?

<NR2> is the measured output voltage in volts.

Examples

FETC:VOLT? might return 5.0011, which would be the measured voltage across

the power supply outputs in volts.

FETCh[:SCALar]:POWer[:DC]? (Query Only)

This command returns the calculated power based on the last measured output voltage and current. A new measurement is not initiated by this command. The power calculation in the instrument is performed approximately every 100 ms. Insure that the voltage and current are stable longer than this for good results.

Group

Syntax

Returns

Examples

Measurement

FETCh[:SCALar]:POWer[:DC]? [ CH1|CH2|CH3|ALL]

<NR2> is the measured output power in watts.

FETCh:POW? might return 6.01667, which would be the power measured at the

output of t he power supply in watts.

2-16 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Commands Listed in Alphabetical Order

*IDN? (Query O

keithley 22XXX XXXXXX X. XX-X. XX

nly)

Group

Syntax

Returns

Examples

Returns the power supply identiﬁcation code in IEEE 488.2 notation.

Status

*IDN?

A string that includes <manufacturer>, <model>, <serial number>, and <ﬁrmware_version> as deﬁned in the following table.

*IDN?

might return the following response for a 2220-30-1:

KEITHLEY , 2220-30–1 , 000004 , 1.01–1.20

INSTrument:COMbine? (Query Only)

This command queries the instrument to det channels 1 and 2.

Group

Syntax

Related Commands

Returns

Channel

INSTrument:COMbine?

INSTrument:COMbine:OFF

Series for series combination.

Parallel for parallel combination.

NONE for combination off.

INSTrument:COMbine:OFF

This command is used to turn off series, parallel, or tracking mode, and return channels 1 and 2 to independent operation.

ermine the combination state of

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-17

Commands Listed in Alphabetical Order

Group

Syntax

Related Commands

Examples

Instrument

INSTrument:COMbine:OFF

INSTrument:COMbine?

INSTRUMENT:COMBINE:OFF

INSTrument:COMbine:PARAllel (No Query Form)

This command sets CH1 and CH2 into parallel mode. This mode assumes that CH1 and CH2 have been wired in parallel external to the power supply. The combined channel should be referred to as CH1 and the current for the combined channel may be set as high as 3A. Voltage will be set to the same value for both

Group

channels. The current.

Channel

measure:current command will respond with the combined

Syntax

Related Commands

Examples

INSTrument:COMbine:PARAllel

INSTrument:COMbine:OFF, INSTrument:COMbine:SERies, INSTrument: COMbine:TRACk,

INSTRUMENT:COMBINE:PARALLEL

INSTrument:COMbine:SERies (No Query Form)

This command sets CH1 and CH2 into series mode. This mode assumes that CH1 and CH2 have been wired in series external to the power supply. The combined channel should be referred to as CH1 and the voltage for the combined channel may be set as high as 60 V. The current limit will be set to the same value for both

Group

Syntax

channels. The voltage.

Channel

INSTrument:COMbine:SERies

measure:voltage command will respond with the combined

2-18 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Commands Listed in Alphabetical Order

Related Commands

Examples

INSTrument:CO INSTrument:COMbine:TRACk

INSTRUMENT:COMBINE:SERIES

Mbine:OFF, INSTrument:COMbine:PARAllel,

INSTrument:COMbine:TRACk (No Query Form)

This command sets CH1 and CH2 in track mode. In this mode, the ratio of CH1 to CH2 voltage that is set before sending the command will be maintained for subsequent voltage settings.

Group

Syntax

Related Commands

Channel

INSTrument:COMbine:TRACk

INSTrument:COMbine:OFF, INSTrument:COMbine:PARAllel, INSTrument:COMbine:SERies

Examples

INSTRUMENT:COMBINE:TRACK

INSTrument:COUPle[:TRIGger]

This command is used to determine which channels will respond to the trigger command.

Group

Syntax

Related Commands

Arguments

Channe

INSTrument:COUPle[:TRIGger] { CH1|CH2|CH3} INSTrument:COUPle[:TRIGger]?

[SOURce:]CURRent[:LEVel][:IMMediate][:AMPLitude][SOURce:]VOLTage[: LEVel]:TRIGgered[:IMMediate][:INCRement]*TRGTRIGger[:IMMediate]

CH1, CH2, and CH3 are the channel numbers (only CH1 or CH2 are available

for the two channel instruments).

NOTE. CH3 is not a valid channel on dual output models.

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-19

Commands Listed in Alphabetical Order

Examples

INST:COUP CH1,

CH2

INSTrument:SELect

This command is used to switch the current channel command.

Group

Syntax

Arguments

Channel

INSTrument:SELect {CH1|CH2|C H3} INSTrument:SELect?

CH1, CH2, or CH3 are the channels you can switch the instrument to.

Availability of channels depends on which model of power supply you have.

MEASure[:SCALar]:CURRent[:DC]? (Query Only)

This command initiates and executes a new current measurement, and returns the measured output current of the power supply. If a channel is speciﬁed, the query returns the measurement for the speciﬁed channel. If no channel i s speciﬁed, the currently selected channel is measured and returned.

Group

Syntax

Related Commands

Returns

Examples

Measurement

MEASure[:SCALar]:CURRent[:DC]? [CH1|CH2|CH3|ALL]

FETCh[:SCALar]:VOLTage[:DC]?, INSTrument:SELect

<NR2> is the measured output current in amperes.

MEAS:CURR? ALL might return 0.0998707, 0.0999861, 0 which would be the

measuredcurrentsonchannels1,2and3inamperes.

MEASure[:SCALar]:POWer[:DC

This command initiates and executes a new output power measurement, and returns the measured output current of the power supply. If a channel is speciﬁed, then the query returns the mea speciﬁed, then the currently-selected channel is measured and returned.

]? (Query Only)

surement for the speciﬁed channel. If no channel is

2-20 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Commands Listed in Alphabetical Order

Group

Syntax

Related Commands

Arguments

Returns

Examples

Measurement

MEASure[:SCALar]:POWer[:DC]? [CH1|CH2|CH3|ALL]

FETCh[:SCALar]:POWer[:DC]?, INSTrument:SELect

CH1, CH2, or CH3 is the channel on which to read the output power.

ALL is to read the output power on all channels.

<NR2> is the measured output power in watts.

MEAS:POW? ALL might return 9.97077, 0.00205158, 0 which would b e the power

beingsuppliedonchannels1,2,and3inwatts.

MEASure[:SCALar][:VOLTage][:DC]? (Query Only)

Group

Syntax

Related Commands

Arguments

Returns

Examples

This command initiates and executes a new voltage measurement, and returns the measured output voltage of the power supply. If a channel is speciﬁed, the query returns the measurement for the speciﬁed channel. If no channel is speciﬁed the currently-selected channel is measured and returned.

Measurement

MEASure[:SCALar][:VOLTage][:DC]? [CH1|CH2|CH3|ALL]

FETCh[:SCALar]:VOLTage[:DC]?, INSTrument:SELect

CH1, CH2, or CH3 is the channel on which to read the output voltage.

ALL is to read the output voltage on all channels.

<NR2> is the measured output voltage in volts.

MEAS:VOLT? ALL might return 20.0002, 0.999465, 4.00024 which would be the

measured voltages on channels 1, 2, and 3 in volts.

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-21

Commands Listed in Alphabetical Order

*OPC

This command conﬁgures the instrument to generate an operation complete message by setting bit 0 of the Standard Event Status Register (SESR) when all pending comm

The query command places the ASCII character "1" into the output queue when all such OPC

ands that generate an OPC message are complete.

commands are complete.

*PSC

Group

Syntax

Examples

Group

Synchronization

*OPC *OPC?

*OPC? might return 1 to indicate that all pending OPC operations are ﬁnished.

Sets and queries the power-on status ﬂag that controls the automatic power-on states of SRER and ESER. When *PSC is true, the Service Request Enable Register (SRER) and Event Status Enable Register (ESER) are set to 0 at power-on. When *PSC is false, the current values in the SRER and ESER are preserved in nonvolatile memory when power is shut off and are restored at power-on.

Source

Syntax

Related Commands

Arguments

Returns

2-22 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

*PSC <NR1> *PSC?

*RST, *OPC

<NR1> = 0 sets the power-on status clear ﬂag to false, disables the power-on clear,

and allows the power supply to possibly assert SRQ after power on.

<NR1> ≠ 0 sets the power-on status clear ﬂag to true. Sending *PSC 1 therefore

enables the power-on status clear and prevents any SRQ assertion after power-on.

0|1

Commands Listed in Alphabetical Order

Examples

*RCL (No Query Form)

Group

Syntax

Related Commands

Arguments

*PSC 0

sets the power-on status clear ﬂag to false.

*PSC?

might return 1, indicating that the power-on status clear ﬂag is set to true.

Restores the state of the power supply from a copy of its settings stored in the setup memory. The settings are stored using the *SAV command. If the speciﬁed setup memory is deleted, this command causes an error.

Save and Recall

*RCL <NR1>

*SAV

<NR1> is an integer value in the range from 1 to 30 and speciﬁes the location

of setup memory.

Examples

*RST (No Query Form)

*RCL 3

sets the power supply to settings stored in memory location 3.

This command resets the power supply to default settings, but does not purge any stored settings.

Sending the *RST command does the following:

Returns the power supply settings to the defaults. (See page C-1, Default Setup.)

Clears the pending operation ﬂag and associated operations

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-23

Commands Listed in Alphabetical Order

Group

Syntax

The *RST comman

State of the USB or GPIB interface

Calibration data that affects device speciﬁcations

Current GPIB power supply address

Stored settings

Output queue

Service Re

Standard Event Status Enable Register settings

Power-On Status Clear ﬂag setting

front-panel LOCK state

Status

*RST

d does not change the following items:

quest Enable Register settings

*SAV (No Query Form)

Group

Syntax

Related Commands

Arguments

Examples

Saves the state of the power supply into a speciﬁed nonvolatile memory location. Any settings that had been stored previously at the location are overwritten. You can later use the *RCL command to restore the power supply to this saved state.

Status

*SAV <NR1>

*RCL

<NR1> is an integer value in the range from 1 to 30.

*SAV 2

saves the settings in memory location 2.

2-24 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Commands Listed in Alphabetical Order

[SOURce:]APP

Related Commands

Arguments

ly (No Query Form)

This command is used to select channels and set voltage and current level using a single command.

Group

Syntax

Source

[SOURce:]APPly {CH1|CH2|CH3},[Voltage|Max|Min],[Current|Max|Min] [SOURce:]APPly [CH1|CH2|CH3]

This command can replace the following commands: INST CH1, VOLT 3V,

and CURR 1A. (See example below.)

CH1, CH2, or CH3 are the three channels (two for two channel instrument

models).

Voltage.

NR2 or NR3. It speciﬁes the voltage setting, which can range from 0 to the maximum nameplate voltage of the power supply.

Voltage is a ﬂexible decimal number (NRf) that may be type NR1,

MAX sets the voltage to th

somewhat higher than the nameplate).

MIN sets the voltage to the minimum level (0 V).

Current is a ﬂexible decimal number (NRf) that may be type NR1,

Examples

Current.

NR2 or NR3. It speciﬁes a level between the minimum current and maximum nameplate current level for the power supply.

MAX sets the current to the maximum level.

MIN sets the current to the minimum level (0 A).

[SOURCE:]APPLY CH1,3V,1A would set channel 1 to 3 volts, 1 amps.

[SOURce]:CHANnel:OUTPut:[STATe]

This command is used to individually control the output state of the single, currently-speciﬁed channel.

Group

Source

e maximum level (note that the maximum level may be

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-25

Commands Listed in Alphabetical Order

Syntax

Related Commands

Arguments

Examples

[SOURce]:CHAN [SOURce]:CHANnel:OUTPut:[STATe]? ON

INSTrument:SELect

0 or OFF indicates that the channel is off.

1 or ON indicates that the channel is on.

CHANNEL:OUTPUT OFF would turn whichever channel had been selected using

INSTRUMENT command to the off state.

CHAN:OUTP? might return 0 to indicate that the current channel is off.

nel:OUTPut:[STATe] {0|1|ON|OFF}

[SOURce:]CURRent[:LEVel]:DOWN[:IMMediate][:AMPLitude] (No Query Form)

This command is used to decrease the current level by a step. The stepping current can be set by the following command:

[SOURce:]CURRent[:LEVel][:IMMediate]:STEP[:INCRement]

Group

Syntax

Related Commands

Source

[SOURce:]CURRent[:LEVel]:DOWN[:IMMediate][:AMPLitude]

[SOURce:]CURRent[:LEVel][:IMMediate]:

[SOURce:]CURRent[:LEVel][:IMMediate][:AMPLitude]

This command is used to set or query the current value of the power supply in units of A or mA.

Group

Syntax

Related Commands

Source

[SOURce:]CURRent[:LEVel][:IMMediate][:AMPLitude] {<Current>|MIN|MAX} [SOURce:]CURRent[:LEVel][:IMMediate][:AMPLitude]?

INSTrument:SELect

STEP[:INCRement]

2-26 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Commands Listed in Alphabetical Order

Arguments

Returns

Examples

<Current> is a ﬂ

NR3. It speciﬁes a level between the minimum current and maximum nameplate current level for the power supply.

MIN sets the current to the minimum level (0 A).

MAX sets the

<NR2> is the current setting in amperes.

CURR 3A

CURR 30mA

CURR MIN

CURR?

might return 2.0000, which would be the current setting in amperes.

exible decimal number (NRf) that may be type NR1, NR2 or

current to the maximum level.

[SOURce:]CURRent[:LEVel][:IMMediate]:STEP[:INCRement]

This command is used to set the current step value.

Group

Syntax

Related Commands

Arguments

Source

[SOURce:]CURRent[:LEVel][:IMMediate]:STEP[:INCRement] {<current level>} [SOURce:]CURRent[:LEVel][:IMMediate]:STEP[:INCRement]?

[SOURce:]CURRent[:LEVel]:UP[:IMMediate][:AMPLitude], [SOURce: ]CURRent[:LEVel]:DOWN[:IMMediate][:AMPLitude]

The current level in A, mA, or μA.

[SOURce:]CURRent:TRIGgered[:IMMediate]

This command is used to set the current level for the trigger function. The command queues the next setting for the currently selected channel. The units are A, mA or uA. When the instrument receives its next trigger, the currently selected channel will be set to the speciﬁed value.

Group

Source

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-27

Commands Listed in Alphabetical Order

Syntax

Related Commands

Arguments

Examples

[SOURce:]CURR [SOURce:]CURRent:TRIGgered[:IMMediate]?

INSTrument:SELect

<Current> is a ﬂexible decimal number (NRf) that may be type NR1, NR2 or

NR3. It speciﬁes a level between the minimum current and maximum nameplate current level for the power supply.

MIN sets the current to the minimum level (0 A).

MAX sets the current to the maximum level.

CURRENT:TRIGGERED 1.1A

ent:TRIGgered[:IMMediate] {<cur rent>|MIN|MAX}

[SOURce:]CURRent[:LEVel]:UP[:IMMediate][:AMPLitude] (No Query Form)

This command is used to increase the current level by a step. The stepping current can be set by the

[SOURce:]CURRent[:LEVel][:IMMediate]:STEP[:INCRement]

command.

Group

Syntax

Related Commands

Source

[SOURce:]CURRent[:LEVel]:UP[:IMMediate][:AMPLitude]

[SOURce:]CURRent[:LEVel][:IMMediate]:STEP[:INCRement]

[SOURce:]OUTPut:ENABle

This command enables or disables the current channel. This command performs the same function as the “Channel Enable” selection in the menu.

Group

Syntax

Source

[SOURce:]OUTPut:ENABle [SOURce:]OUTPut:ENABle?

2-28 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Commands Listed in Alphabetical Order

Arguments

Returns

0 disables the c

1 enables the current channel.

Disabled

Enabled

urrent channel.

[SOURce:]OUTPut:PARallel[:STATe]

This command sets the parallel state of CH1 and CH2.

Group

Syntax

Arguments

Source

[SOURce:]OUTPut:PARallel[:STATe] 0|1|OFF|ON [SOURce:]OUTPut:PARallel[:STATe]?

0 or OFF sets the parallel state to off.

1 or ON sets the parallel state to on.

Examples

[SOURCE:]OUTPUT:PARALLEL[:STATE]

[SOURce:]OUTPut:PON[:STATe]

This command conﬁgures the power supply to power up with its output turned off, or to return the output to the state it was in when it powered down.

Group

Syntax

Arguments

Returns

Source

[SOURce:]OUTPut:PON[:STATe] { RST|RCL0} [SOURc

RST sets the power supply to power-up with output off.

RCL0 sets the power supply to power-up with the output in the last state before

power was removed.

RST|RCL0

e:]OUTPut:PON[:STATe]?

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-29

Commands Listed in Alphabetical Order

Examples

OUTPUT:PON RST

OUTPUT:PON? might return RCL0, which would indicate that the instrument will

return to the present output state if the power is cycled.

[SOURce:]OUTPut:SERies

This command sets the serial state of CH1 and CH2.

Group

Syntax

Arguments

Examples

Source

[SOURce:]OUTPut:SERies {0|1| OFF|ON} [SOURce:]OUTPut:SERies?

0 or OFF sets the parallel state to off.

1 or ON sets the parallel state to on.

[SOURCE:]OUTPUT:SERIES

[SOURce:]OUTPut[:STATe][:ALL]

This command turns all of the enabled output channels on or off.

Group

Syntax

Related Commands

Arguments

Returns

Examples

Source

[SOURce:]OUTPut[:STATe][:ALL] {0|1|ON|OFF} [SOURce:]OUTPut[:STATe][:ALL]?

[SOURce:]OUTPut:TIMer[:STATe]

0 or OFF turns the power supply output off.

1 or ON turns the power supply output on.

1|0

OUTPUT ON

OUTPUT? might return 0, which would indicate that the outputs are off.

2-30 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Commands Listed in Alphabetical Order

[SOURce:]OUT

Related Commands

Arguments

Put:TIMer:DELay

This command sets the time duration of the output timer for the currently selected channel. When the timer is activated and a duration is set, the speciﬁed output of the power sup duration. In order to ensure proper operation of the output timer, the timer must be activated using the [SOURce:]OUTPut:TIMer[:STATe] command before turning the output on.

Group

Syntax

Source

[SOURce:]OUTPut:TIMer:DELay { <duration>|MIN|MAX|DEF} [SOURce:]OUTPut:TIMer:DELay?

[SOURce:]OUTPut:TIMer[:STATe], [SOURce:]OUTPut[:STATe][:ALL], INSTrument:SELect

where <NRf> is a ﬂexible decimal specifying time in the range 0.01s (or 10ms) to 60000s. <units>::={S|ms}

ply will turn off automatically if left on longer than the speciﬁed

MIN: The minimum time of the output timer (0.01 s).

MAX: The maximum time of the output timer (60,000 s).

DEF: The default time of the output timer (60 s).

Returns

Examples

<NR2> is the timer duration in s econds.

OUTP:TIM:DEL 120

OUTP:TIM:DEL?

in seconds, that the output of the instrument could be turned on if the timer is active.

[SOURce:]OUTPut:TIMer[:STATe]

This command turns the output timer function on and off. When the timer is activated and a duration is s et, an output channel of the power supply will turn off automatically if left on longer than the speciﬁed duration. In order to ensure proper operation of the output timer, the timer must be activated using the

[SOURce:]OUTPut:TIMer[:STATe] command before turning the output on.

might return 60.2, which would represent the maximum time,

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-31

Commands Listed in Alphabetical Order

Group

Syntax

Related Commands

Arguments

Returns

Examples

Source

[SOURce:]OUTPut:TIMer[:STATe] {0|1|ON|OFF} [SOURce:]OUTPut:TIMer[:STATe]?

[SOURce:]OUTPut:TIMer:DELay, [SOURce:]OUTPut[:STATe][:ALL], INSTrument:SELect

0 or OFF turns the output timer off.

1 or ON turns the output timer on.

0|1

To activate the timer, ﬁrst send OUTPUT:TIMER:STATE ON,thensend

OUTPUT:STATE ON.

To turn the timer off, send

OUTPUT:TIMER:STATE OFF.

[SOURce:]VOLTage[:LEVel]:DOWN[:IMMediate][:AMPLitude] (No Query Form)

This command is used to decrease the voltage level of the currently selected channel by a step. The voltage step value can be set by the following command:

[SOURce:]VOLTage[:LEVel][:IMMediate]:STEP[:INCRement]

Group

Syntax

Related Commands

Source

[SOURce:]VOLTage[:LEVel]:DOWN[:IMMediate][:AMPLitude]

[SOURce:]VOLTage[:LEVel][:IMMediate]:STEP[:INCRement], [SOURce:]VOLTage[:LEVel][IMMediate][:AMPLitude], [SOURce:]VOLTage[: LEVel]:UP[:IMMediate][:AMPLitude]

[SOURce:]VOLTage[:LEVel][IMMediate][:AMPLitude]

This command is used to set the voltage level of the of the currently selected channel. The units are V, mV or kV.

Group

2-32 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Source

Commands Listed in Alphabetical Order

Syntax

Related Commands

Arguments

[SOURce:]VOLT {<voltage>|MIN|MAX} [SOURce:]VOLTage[:LEVel][IMMediate][:AMPLitude]?

age[:LEVel][IMMediate][:AMPLitude]

[SOURce:]VOLTage[:LEVel]:DOWN[:IMMediate][:AMPLitude]

[SOURce:]VOLTage[:LEVel]:UP[:IMMediate][:AMPLitude]

[SOURce:]VOLTage[:LEVel][:IMMediate]:STEP[:INCRement]

INSTrument:SELect

<voltage> is a ﬂexible decimal number (NRf) that may be type NR1, NR2 or

NR3. It speciﬁes the voltage setting, which can range from 0 to the maximum nameplate voltage of the power supply.

MIN sets the voltage to the minimum level (0 V).

MAX sets the voltage to the maximum level (note that the maximum level may be

somewhat higher than the nameplate).

UP sets the voltage level to increase a step.

DOWN sets the voltage level to decrease a step.

DEF is the default level (1 V).

Returns

Examples

NR2 is the voltage setting in volts.

VOLTAGE:MIN

VOLTAGE?

might return 1.05, which would be the voltage setting in volts.

[SOURce:]VOLTage[:LEVel][:IMMediate]:STEP[:INCRement]

This command is used to set the voltage step value.

Group

Syntax

Related Commands

Source

[SOURce:]VOLTage[:LEVel][:IMMediate]:STEP[:INCRement] {<voltage>} [SOURce:]VOLTage[:LEVel][:IMMediate]:STEP[:INCRement]?

[SOURce:]VOLTage[:LEVel]:DOWN[:IMMediate][:AMPLitude]

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-33

Commands Listed in Alphabetical Order

age[:LEVel]:UP[:IMMediate][:AMPLitude]

Arguments

[SOURce:]VOLT

[SOURce:]VOLTage[:LEVel][IMMediate][:AMPLitude]

INSTrument:SELect

<voltage> is the voltage in kV, V, mV, or μV.

[SOURce:]VOLTage[:LEVel]:UP[:IMMediate][:AMPLitude] (No Query Form)

This command is used to increase the voltage level of the currently selected channel by a step. The voltage step value can be set by the following command:

[SOURce:]VOLTage[:LEVel][:IMMediate]:STEP[:INCRement]

Group

Syntax

Related Commands

Source

[SOURce:]VOLTage[:LEVel]:UP[:IMMediate][:AMPLitude]

[SOURce:]VOLTage[:LEVel][:IMMediate]:STEP[:INCRement]

[SOURce:]VOLTage[:LEVel][IMMediate][:AMPLitude]

[SOURce:]VOLTage[:LEVel]:TRIGgered[:IMMediate][:INCRement]

This command is used to set the voltage level for the trigger function.

Group

Syntax

Arguments

Trigger

[SOURce:]VOLTage[:LEVel]:TRIGgered[:IMMediate][:INCRement] [SOURce:]VOLTage[:LEVel]:TRIGgered[:IMMediate][:INCRement]?

<voltage> is a ﬂexible decimal number (NRf) that may be type NR1, NR2 or

NR3. It speciﬁ es the voltage setting, which can range from 0 to the max nameplate voltage of the power supply.

MIN sets the voltage to the minimum level (0 V).

MAX sets the voltage to the maximum level (note that the maximum le

somewhat higher than the nameplate).

imum

vel may be

UP sets the voltage level to increase a step.

2-34 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Commands Listed in Alphabetical Order

DOWN sets the vo

DEF is the default level (1 V).

Returns

The voltage in kV, V, mV, or uV.

[SOURce:]VOLTage:LIMit[:LEVel]

This command limits the maximum voltage that can be programmed on the power supply. This command will apply the limit to the currently-selected channel and corresponds to the front-panel Max Voltage setting that can be found under the Protection Settings submenu.

Group

Syntax

Related Commands

Source

[SOURce:]VOLTage:LIMit[:LEVel] {<voltage>|MIN|MAX} [SOURce:]VOLTage:LIMit[:LEVel]?

INSTrument:SELect

ltage level to decrease a step.

[SOURce:]VOLTage:LIMit:STATe

Arguments

Examples

<voltage> is a ﬂexible decimal number that may be type NR1, NR2 or NR3.

It speciﬁes the voltage limit setting, which can range from 0 to the maximum nameplate voltage of the power supply.

MIN sets the maximum voltage to the minimum level (0 V).

MAX sets the maximum voltage to the maximum level (note that the maximum

level may be somewhat higher than the nameplate).

VOLTAGE:LIMIT:STATE 6V

[SOURCE:]VOLTAGE:LIMIT[:LEVEL]

maximum voltage limit setting on the current channel.

[SOURce:]VOLTage:LIMit:STATe

This command turns the maximum voltage for the currently selected channel o n or off on the current channel. This limit corresponds to the Max Volt Set command on the front panel of the instrument.

? might return 30.1, which is the

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-35

Commands Listed in Alphabetical Order

Group

Syntax

Related Commands

Arguments

Examples

Source

[SOURce:]VOLTage:LIMit:STATe {0|OFF|1|ON} [SOURce:]VOLTage:LIMit:STATe?

INSTrument:SELect

[SOURce:]VOLTage:LIMit[:LEVel]

0 or OFF turns off the maximum voltage limit.

1 or ON turns it on.

VOLTAGE:LIMIT:STATE ON

[SOURce:]VOLTage:TRIGgered[:IMMediate]

This command is used to set the voltage level for the trigger function. The command queues the next setting for the currently selected channel. The units are kV, V, mV or μV. When the instrument receives its next trigger, the currently selected channel will be set to the speciﬁed value. So, 8000000 μVwillsetthe voltage to 8 V on the front panel.

Group

Syntax

Related Commands

Arguments

Examples

Source

[SOURce:]VOLTage:TRIGgered[:IMMediate] {<voltage>|MIN|MAX} [SOURce:]VOLTage:TRIGgered[:IMMediate]?

INSTrument:SELect

<voltage> is a ﬂexible decimal number (NRf) that may be type NR1, NR2 or

NR3. It speciﬁes a level between the minimum voltage and maximum nameplate voltage level for the power supply.

MIN sets the voltage to the minimum level (0 V).

MAX sets the voltage to the maximum level.

VOLTAGE:TRIGGERED 4.5V

2-36 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

*SRE

Commands Listed in Alphabetical Order

(Service Request Enable) sets and queries the bits in the Service Request Enable Register (SRER). Refer to the Status and Events chapter for more information.

Group

Syntax

Related Commands

Arguments

Examples

Status

*SRE <NR1> *SRE?

*CLS, *ESR?, *PSC

<NR1> is an integer value in the range from 0 to 255. The binary bits of the SRER

are set according to this value. Using an out-of-range value causes an execution error. The power-on default for SRER i s 0 if *PSC is 1. If *PSC is 0, the SRER maintains its value through a power cycle.

*SRE 48 sets the bits in the SRER to 00110000 binary.

*SRE? might return a value of 32, showing that the bits in the SRER have the

binary value 00100000.

STATus:OPERation:ENABle

This command sets and queries the contents of the operation enable register (OENR). The OENR is an eight-bit mask register that determines which bits in the Operation Event Register (OEVR) will affect the state of the OPER bit in the Status Byte Register (SBR). Details about the status registers are available in this manual. (See page 3-1, Status and Events.)

Group

Syntax

Related Commands

Arguments

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-37

Status

STATus:OPERation:ENABle <NR1> STATus:OPERation:ENABle?

*PSC, STATus:OPERation:INSTrument[:EVENt]?

where

<NR1> is a decimal integer ranging from 0 through 255. The binary bits of the

OENR are set according to this value.

Commands Listed in Alphabetical Order

Returns

Examples

<mask>

STATUS:OPERATION:ENABLE 2

STATUS:OPERATION:ENABLE? might return 2.

STATus:OPERation[:EVENt]? (Query Only)

This command returns the contents of the operation event register (OEVR). After executing this command the operation event register is reset. Details about status registers are available in this manual. (See page 3-1, Status and Events.)

Group

Syntax

Related Commands

Returns

Status

STATus:OPERation[:EVENt]?

STATus:OPERation:INSTrument[:ENABle]?

<NR1> is a decimal integer representation of the contents of the Operation Event

Examples

STATUS:OPERATION:EVENT? might return 2, which indicates that the summary

bit is set.

STATus:OPERation:INSTrument[:ENABle]? (Query Only)

This command queries the contents of the operation instrument enable register (OIENR). The OIENR is an eight-bit mask register that determines which bits in the Operation Enable Register (OENR) will affect the state of the OPER bit in the Status Byte Register (SBR). Details about the status registers are available in this manual. (See page 3-1, Status and Events.)

Group

Syntax

Related Commands

Status

STATus:OPERation:INSTrument[:ENABle]? <NR1>

*PSC

STATus:OPERation:INSTrument[:EVENt]?

2-38 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Commands Listed in Alphabetical Order

Returns

Examples

<mask>

STATUS:OPERATION:INSTRUMENT[:ENABLE]? might return 128,whichwould

indicate that only the Constant Current bit of the Operation Enable Register would affect the OPER bit of the Status Byte Register.

STATus:OPERation:INSTrument[:EVENt]? (Query Only)

This command returns the contents of the operation event register. After executing this command the operation event register is reset. Details about status registers are available in this manual. (See page 3-1, Status and Events.)

Group

Syntax

Related Commands

Status

STATus:OPERation:INSTrument[:EVENt]?

STATus:OPERation:INSTrument[:ENABle]?

Returns

Examples

<NR1> is a decimal integer representation of the contents of the Operation Event

STATUS:OPERATION:INSTrument[:EVENT]? might return 10, which indicates

that the power supply is waiting for trigger and is in a constant current mode.

STATus:OPERation:INSTrument:ISUMmary<x>:CONDition? (Query Only)

This command is used to query the operation condition register of a channel, where <x> is 1, 2, or 3. 1, 2, and 3 are channel 1, 2, and 3, respectively. Only 1 and 2 are available on two channel instruments.

Group

Syntax

Related Commands

Status

STATus:OPERation:INSTrument:ISUMmary<x>:CONDition?

STATus:OP INSTrument:ISUmmary<x>:ENABle

ERation:INSTrument:ISUmmary<x>[:EVENt]?, STATus:OPERation:

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-39

Commands Listed in Alphabetical Order

Returns

<NR1> isadecim

speciﬁed channel's operation enable register are set according to this value.

al integer ranging from 0 through 255. The binary bits of the

STATus:OPERation:INSTrument:ISUmmary<x>:ENABle

This command is used to modify or query the operation enable register of a channel, where <x> is 1, 2, or 3. 1, 2, and 3 are channel 1, 2, and 3, respectively. Only1and2areavailableontwochannelinstruments. (Seepage3-1,Status

Group

Syntax

Arguments

and Events

Status

STATus:OPERation:INSTrument:ISUmmary<x>:ENABle STATus:OPERation:INSTrument:ISUmmary<x>:ENABle?

where

<NR1> is a decimal integer ranging from 0 through 255. The binary bits of the

OENR are set according to this value.

Examples

STAT:OPER:INST:ISUM2:ENABle 2

might return 2, which would indicate that

STAT:OPER:INST:ISUM2:ENAB

only the Constant Current bit of the Operation Enable Register for channel 2 would affect the OPER bit of the Status Byte Register.

le?

STATus:OPERation:INSTrument:ISUmmary<x>[:EVENt]? (Query Only)

nnel, where <x> is 1, 2,

Group

Syntax

Returns

This queries the operation event register summary of a cha or 3. 1, 2, and 3 are channel 1, 2, and 3, respectively. Only 1 and 2 are available on two channel instruments.(See page 3-1, Status and Events.)

Status

STATus:OPERation:INSTrument:ISUmmary<x>[:EVENt]?

<NR1> isadecima

l integer representation of the contents of the Operation Event

2-40 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Commands Listed in Alphabetical Order

Examples

STATUS:OPERAT

indicates that channel 1 is turned on and in constant voltage mode.

STATus:QUEStionable:ENABle

This command sets and queries the contents of the questionable enable register (QENR). The QENR is an eight-bit mask register that determines which bits in the Questionable Event Register (QEVR) will affect the state of the QUES bit in the Status Byte Register (SBR).

Group

Syntax

Related Commands

Arguments

Status

STATus:QUEStionable:ENABle <N R1> STATus:QUEStionable:ENABle?

STATus:QUEStionable[:EVENt]?, *PSC

<NR1> is a decimal integer ranging from 0 through 255. The bits of the mask

ION:INSTRUMENT:ISUMMARY1:EVENT?

might return 9,which

Returns

Examples

<mask>

STATUS:QUESTIONABLE:ENABLE 8

STATUS

only a transition of the Remote Inhibit bit of the QCR would affect the QUES bit of the Status Byte Register.

:QUESTIONABLE:ENABLE

STATus:QUEStionable[:EVENt]? (Query Only)

This command returns the contents of the questionable event register (QEVR). After executing this command, the quest event register is reset. Details about the QEVR are available in this manual. (See page 3-1, Status and Events.)

Group

Syntax

Related Commands

Status

STATus:QUEStionable[:EVENt]?

STATus:QUEStionable:ENABle

? might return 8, which would indicate that

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-41

Commands Listed in Alphabetical Order

Returns

Examples

<NR1> is a decim

Event Register (QEVR), ranging from 0 to 255.

STATUS:QUESTIONABLE:EVENT? might return 0, which would indicate an over

voltage condition.

al integer representation of the contents of the Questionable

STATus:QUEStionable:INSTrument:ENABle

This command queries the questionable instrument status event register of the instrument.

Group

Syntax

Arguments

Status

STATus:QUEStionable:INSTrument:ENABle <NR1> STATus:QUEStionable:INSTrument:ENABle?

<NR1> is a decimal integer ranging from 0 through 255. The bits of the mask

Examples

STATus:QUEStionable:INSTrument[:EVENt] 8

STATus:QUEStionable:INSTrument[:EVENt]?

indicate that only a transition of the Remote Inhibit bit of the QCR would affect the QUES bit of the Status Byte Register.

STATus:QUEStionable:INSTrument[:EVENt]? (Query Only)

This command queries the questionable instrument status event register of the instrument.

Group

Syntax

Related Commands

Returns

Status

STATus:QUEStionable:INSTrument[:EVENt]?

STATus:QUEStionable:INSTrument:ENABle

<NR1> is a decimal integer representation of the contents of the Questionable

Event Register (QEVR), ranging from 0 to 255.

might return 8,whichwould

2-42 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Commands Listed in Alphabetical Order

Examples

STATUS:QUESTI

indicate an over voltage condition.

ONABLE:INSTRUMENT:EVENT?

might return 0 , which would

STATus:QUEStionable:INSTrument:ISUMmary<x>:CONDition? (Query Only)

This queries the questionable condition register (QCR) summary of a channel, where <x> is 1, 2, or 3. 1, 2, and 3 are channel 1, 2, and 3, respectively. Only 1 and2areavailableontwochannelinstruments.(Seepage3-1,Status and Events.)

Group

Syntax

Returns

Examples

Status

STATus:QUEStionable:INSTrument:ISUMmary<x>:CONDition?

<NR1> is a decimal integer representation of the contents of the Questionable Condition Register (OCR), ranging from 0 to 255.

STAT:QUES:INST:ISUMM1:COND? might return 1, which would indicate an

over voltage condition on channel 1.

STATus:QUEStionable:INSTrument:ISUMmary<x>:ENABle7

This command is used to modify or query the operation enable register summary ofachannel,where<x>is1,2,or3. 1,2,and3arechannel1,2,and3, respectively. Only 1 and 2 are available on two channel instruments. (See page 3-1, Status and Events.)

Group

Syntax

Arguments

Examples

Status

STATus:QUEStionable:INSTrument:ISUMmary<x>:ENABle <NR1> STATus:QUEStionable:INSTrument:ISUMmary<x>:ENABle?

<NR1> is a decimal integer representation ranging from 0 through 255. The bits of

the mask register of the Questionable Enable Register for the speciﬁed channel are set according to this value.

STATus:QUEStionable:INSTrument:ISUMmary2:ENABle? 2

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-43

Commands Listed in Alphabetical Order

STATus:QUEST

ionable:INSTrument:ISUMmary<x>:[EVENt]? (Query Only)

Group

Syntax

Returns

Examples

*STB? (Query Only)

This queries the operation e vent register of summary of a channel, where <x> is 1, 2, or 3. 1, 2, and 3 are channel 1, 2, and 3, respectively. Only 1 and 2 are available on two channe

Status

STATus:QUESTionable:INSTrument:ISUMmary<x>:[EVENt]?

<NR1> is a decimal integer represen

Event Register for the s peciﬁed channel, ranging from 0 to 255.

STATUS:QUESTIONABLE:INSTRUMENT:ISUMMARY3:EVENT? might return 2,

indicating that channel 3 transitioned

The byte query returns the contents of the Status Byte Register (SBR) using the Master Summary Status (MSS) bit. Refer to the Status and Events chapter for more information. (See page 3-3.)

l instruments. (See page 3-1, Status and Events.)

tation of the contents of the Questionable

to constant current mode.

Group

Syntax

Related Commands

Returns

Examples

Status

*STB?

*ESE, *CLS, *ESR?

<NR1>

*STB? 96

shows that the SBR contains the binary value 01100000.

SYSTem:ERRor? (Query Only)

This command queries the error code and error information of the pow and returns both values. (See Table 3-10 on page 3-10.)

er supply

2-44 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Commands Listed in Alphabetical Order

SYSTem:KEY

Group

Syntax

Returns

Examples

Group

System

SYSTem:ERRor?

where <string> is a description of the error.

SYSTEM:ERROR? might return 110, which means No Input Command to parse.

This command can produce the same effect as pressing one of the front-panel buttons. The instrument must be in local mode in order for this command to simulate a front-panel button press.

System

Syntax

Arguments

Returns

SYSTem:KEY <NR1> SYSTem:KEY?

<NR1> is an integer key code (see the following table).

<NR1>

Front-panel butto n <NR1> key code

KEY_VSET

KEY_ISET

KEY_SAVE

KEY_RECALL

KEY_LEFT

KEY_RIGHT

KEY_UP

KEY_DOWN

KEY_0 9

KEY_1 10

KEY_2 11

KEY_3 12

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-45

Commands Listed in Alphabetical Order

Examples

tton

<NR1> key code

Front-panel bu

KEY_4 13

KEY_5 14

KEY_6 15

KEY_7 16

KEY_8 17

KEY_9 18

KEY_DECIMA

KEY_ESC

KEY_ENTER 21

KEY_ON

KEY_SHIFT

MENU 23

CH1

CH2

CH3

SYSTEM:KEY 64 would simulate a press of the Shift key.

SYSTem:LOCal (No Query Form)

This command sets the power supply for control from the front-panel.

System

SYSTem:LOCal

SYSTem:REMote, SYSTem:RWLock

SYS:LOC

This command queries the module of the power supply.

System

Related Commands

SYSTem:MO

Group

Syntax

Examples

DUle? (Query Only)

Group

2-46 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Commands Listed in Alphabetical Order

Syntax

Returns

Examples

SYSTem:POSetup

Group

Syntax

SYSTem:MODUle

where <string> is a description of the error.

SYSTEM:MODULE? might return ?, which means ?.

This command determines how the power supply initializes when its power switch is turned on. This command conﬁgures the instrument to power up with default settings, or power up with the settings that were in effect when the instrument was turned off.

System

SYSTem:POSetup {RST|RCL0} SYSTem:POSetup?

Arguments

Returns

Examples

RST: initializes the power supply to default settings after a power cycle.

RCL0: saves the most recent settings and restores these after a power cycle.

RST: default settings are applied after a power cycle.

RCL0: most recent settings are saved and restored after a power cycle.

SYST:POS RST

SYSTEM:POSETUP?

power supply is conﬁgured to restore the power supply to default settings when it powers up.

SYSTem:REMote (No Query Form)

This command sets the power supply to remote control mode.

Group

Syntax

System

SYSTem:REMote

might respond with RST, which would indicate that the

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-47

Commands Listed in Alphabetical Order

Related Commands

Arguments

Examples

SYSTem:LOCal,

None.

SYSTEM:REMOTE

SYSTem:RWLock (No Query Form)

If the power supply is in remote mode, this command locks out the front panel. This command has no effect if the instrument is in local mode.

Group

Syntax

Related Commands

Arguments

System

SYSTem:RWLock

SYSTem:REMote, SYSTem:LOCal

None.

SYSTem:RWLock

Examples

SYSTEM:RWLOCK

SYSTem:VERSion? (Query Only)

This command returns SCPI version of the instrument.

Group

Syntax

Returns

Examples

System

SYSTem:VERSion?

<NR2> is the software version of the power supply.

SYSTEM:VERSION? might return 19 91.0, which is the SCPI version number.

*TRG (No Query Form)

This command generates a trigger event.

2-48 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Commands Listed in Alphabetical Order

Group

Syntax

Related Commands

Examples

Trigger

*TRG

TRIGger[:IMMediate]

*TRG

TRIGger[:IMMediate] (No Query Form)

This command forces an immediate trigger event.

Group

Syntax

Related Commands

Trigger

TRIGger[:IMMediate]

*TRG

Arguments

Examples

*TST? (Query Only)

Group

Syntax

Returns

None.

TRIGGER

Initiates a self-test and reports any errors.

Diagnostic

*TST?

<NR1>

where

<NR1>= 0 indicates that the self-test completed with no errors. <NR1> not equal to 0 indicates that the self test detected an error.

Self test code descriptions are available. (See Table 3-14 on page 3-12.)

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 2-49

Commands Listed in Alphabetical Order

*WAI (No Query

Examples

Form)

Group

Syntax

This command prevents the instrument from executing further commands or queries until all pending commands are complete.

Synchronization

*WAI

2-50 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Status and Events

This section provides details about the status information and events the power supply reports.

Status Reporting Structure

A diagram is provided showing an outline of the power supply error and event reporting

The error and event reporting system consists of the following four register groups:

function. (See Figure 3-1.)

Status Byte

Standard Event

Operation Status

Questionable Status

The ope provide the error and event data.

rations processed in these registers are summarized in status bytes, which

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 3-1

Status and Events

Figure 3-1: Error and event handling process

3-2 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Registers

Status and Events

The registers in the event reporting system fall into two functional groups:

Status registers contain information about the status of the power supply. They include the Status Byte Register (SBR), Standard Event Register (SER), the Questionable Status Register (QSR), the Questionable Instrument Status Register (QISR), the Operation Status Register (OSR), and the Operation Instrument Status Register (OISR).

Summary registers record high-level summary information reported in the other register groups. They include the Questionable Instrument Summary Register (QISUR) and the Operation Instrument Summary Register (OISUR).

Status Registers

There are six types of status registers:

Status Byte Register (SBR). (See page 3-3.)

Standard Event Register (SER). (See page 3-4.)

Operation Instrument Status Register (OISR). (See page 3-4.)

Operation Status Register (OSR). (See page 3-5.)

Questionable Instrument Status Register (QISR). (See page 3-5.)

Questionable Status Register (QSR). (See page 3-6.)

The Status Byte Register (SBR). The SBR is made up of 8 bits. Bits 2, 4 and 5 are deﬁned in accordance with IEEE Std 488.2-1992. These bits are used to monitor the error queue, output queue, and SER, respec

tively.

Figure 3-2: SBR bit functions

Table 3-1: SBR bit functions

Bit Function

4MAV

OPER

RQS

ESB

QUES

Operation Status Bit. Indicates that an operation

event has occurred.

Request Service. Obtained from a serial poll. Shows

that the power supply requests service from the GPIB controller.

Event Status Bit. Shows that status is enabled and

present in the SESR.

Message Available. Shows that output is available

in the Output Queue.

Questionable Status Bit. Indicates that a

questionable event has occurred.

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 3-3

Status and Events

Table 3-1: SBR bit functions (cont.)

Bit Function

2EAV

————

Shows that information is available in the Error Queue.

Not used.

Each bit in

an Enable Register corresponds to a bit in an Event Register. In order for an event to be reported to a bit in the Status Byte Register, the corresponding bit in the Enable Register must be set to one. If the bit in the Enable Register is set to zero, the event will not affect the status bit.

Various commands set the bits in the Enable Registers. Following are descriptions of the Enable Registers and the commands used to set them.

The Standard Event Register (SER). The SER records six types of events that can occur w

ithin the power supply as shown in the following ﬁgure.

Figure 3-3: The Standard Event Register (SER)

le 3-2: SER bit functions

Tab

Bit Fun

3DDE

ction

PON

——

QYE

————

OPC

er On.

Pow

on.

is bit is not used.

mmand Error.

the power supply was parsing a command or query.

Execution Error. Shows that an error occurred w hile

the power supply was executing a command or query.

Device Error. Shows that a device dependent error

occurred.

Query Error. E ither an attempt w as made to read the

Output Queue when no data was present or pending, or that data in the Output Queue was lost.

This bit is not used.

Operation Complete. Shows that the operation

is complete. This bit is set when all pending operations complete following an *OPC command.

Shows that the power supply was powered

Shows that an error occurred while

The Operation Instrument Status Register (OISR). The O peration Instrument Status Register is made up of eight bits that note the occurrence of events as shown here.

3-4 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Figure 3-4: OISR bit functions

Status and Events

Tabl e 3-3: O

Bit Function

The Ope

ISR bit functions

————

INST3

INST2

INST1

————

This bit is not used.

This bit is

This bit is not used.

STATus:OPERation:INSTrument:ISUMmary3 is

reported to INST3.

STATus:OPERation:INSTrument:ISUMmary2 is

reported to INST2.

STATus:OPERation:INSTrument:ISUMmary1 is

reported to INST1.

This bit is not used.

not used.

ration Status Register (OSR). The Operation Status Register is made up of

8 bits which note the occurrence of four types of events as shown here.

Figure 3-5: OSR bit functions

Table 3-4: OSR bit functions

Bit Function

————

ON Output is ON or OFF.

CAL

CC Constant current.

CV Constant voltage.

This bit is not used.

New calibration parameters are being calculated.

The Questionable Instrument Status Register (QISR). The Questionable Instrument Status Register is made up of 16 bits which note the occurrence of three types of events as shown here.

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 3-5

Status and Events

Figure 3-6: QISR bit functions

Table 3-5: QISR bit functions

Bit Function

————

INST3

INST2

INST1

————

This bit is not used.

STATus:QUEStionable:INSTrument:ISUMmary3

is reported to INST3.

STATus:QUEStionable:INSTrument:ISUMmary2

is reported to INST2.

STATus:QUEStionable:INSTrument:ISUMmary1

is reported to INST1.

This bit is not used.

The Questionable Status Register (QSR). The Questionable Status Register is made up of 8 bits which note the occurrence of two types of events as shown in the following ﬁgure and table.

Figure 3-7: QSR bit functions

Table 3-6: QSR bit functions

Bit Function

————

This bit is not used.

3-6 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Table 3-6: QSR bit functions (cont.)

Bit Function

————

CC Constant current.

CV Constant voltage.

This bit is not used.

Status and Events

Summary R

egisters

There are two types of summary registers:

Operation Instrument Summary Register (OISUR). (See page 3-8.)

Questionable Instrument Summary Register (QISUR). (See page 3-8.)

The QIS

UR and OISUR allow you to select which events are reported to the

Status Byte Register (SBR).

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 3-7

Status and Events

The Operation I

nstrument Summary Register (OISUR). The Operation Instrument

Summary Register is made up of 8 bits, which note the occurrence of the condition shown here.

Table 3-7: OISUR bit functions

Bit Function

————

ISUM Summary of ————

This bit is not used.

STAT:OPER:INST.

The Questionable Instrument Summary Register (QISUR). The Questionable Instrument Summary Register is made up of 16 bits, which note the occurrence of two types of conditions as shown here.

Figure 3-8: QISUR bit functions

Table 3-8: QISUR bit functions

Bit Function

————

ISUM Summary of ————

————

OTP Over temperature protection. ————

This bit is not used.

STAT:QUES:INST:ISUM.

3-8 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Table 3-8: QISUR bit functions (cont.)

Bit Function

————

This bit is not used.

Status and Events

Queues

Err

*PSC Comma

Output Queue

or/Event Queue

The *PSC command controls the Enable Register contents at power-on. Sending *PSC 1 sets the Enable Registers at power on as follows:

ESER 0 (equivalent to an *ESE 0 command)

SRER 0 (equivalent to an *SRE 0 command)

Sending *PSC 0 lets the Enable Registers maintain their values in nonvolatile memory through a power cycle.

The power supply stores query responses in the Output Queue and empties this queue each time it receives a new command or query message after an <EOM>. The controller must read a query response before it sends the next command (or query) or it will lose responses to earlier queries.

The Event Queue stores detailed information on up to 32 events. When 32 events stack up in the Event Queue, the 32nd event is replaced by event code 350, "Queue Overﬂow."

Read the Event Queue with the EVENT? query (which returns only the event number), with the EVMSG? query (which returns the event number and a text

escription of the event), or with the ALLEV? query (which returns all the event

d numbers with a description of the event). Reading an event removes it from the queue.

Before reading an event from the Event Queue, you must use the *ESR? query to read the summary of the event from the SESR. This makes the events summarized by the *ESR? read available to the EVENT? and EVMSG? queries, and empties the SESR.

Reading the SESR erases any events that were summarized by previous *ESR? reads but not read from the Event Queue. Events that follow an *ESR? read are put in the Event Queue but are not available until *ESR? is used again.

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 3-9

Status and Events

Messages and C

Command Errors

odes

Error and event c odes with negative values are SCPI standard codes. Error and event codes with positive values are unique to the Series 2200 Programmable Multichanne

l DC Power Supplies.

Table 3-9: No event messages

Code Message

0 No events to report; queue empty

No events to report; new events pending *ESR?

The following table shows the command error messages generated by improper syntax. Check that the command is properly formed and that it follows the rules in the section on command Syntax.

Table 3-10: Command error messages (CME bit 5)

Code Message

101

110

114

116

117

120

130

140

150

160

165 Unmatched bracket

170

180 No entry in list to retrieve

190 Too many dimensions in entry to be returned in parameters

191 Too many char

Design error: Too many numeric sufﬁces in Command Spec

No Input Command to parse

Numeric sufﬁxisinvalidvalue

Invalid value in numeric or channel list, e.g. out of range

Invalid number of dimensions in a channel list

Parameter of type Numeric Value overﬂowed its storage

Wrong units for parameter

Wrong type of parameter(s)

Wrong number of parameters

Unmatched quotation mark in parameters (single/double)

Command keywords were not recognized

Execution Errors

The following table lists the execution errors that are detected during execution of a command.

Table 3-11: Execution error messages (EXE bit 4)

Code Message

–200 Execution error

–221

Settings conﬂict

3-10 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Table 3-11: Execution error messages (EXE bit 4) (cont.)

Code Message

–222

–223 Too much data

–224 Illegal parameter value

–225

–270 Macro error

–272 Macro execution error

–273 Illegal macro label

–276 Macro recursion error

–277

Data out of range

Out of memory

Macro redeﬁnition not allowed

Status and Events

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 3-11

Status and Events

System Errors

Query Errors

The following t

able lists the system errors that can occur during power supply

operation.

Table 3-12: System error messages (DDE bit 3)

Code Message

–310

–350 Too many errors

System error

The following table lists the query errors that can occur during power supply operation. These errors may indicate that there was a problem during the query process and that your query will not be performed.

Table 3-13: Query error messages (Standard Event Status Register bit 2)

Code Message

–400

–410

–420

–430

–440

Query error

Query INTERRUPTED

Query UNTERMINATED

Query DEADLOCKED

Query UNTERMINATED

Self Test Errors

The following table lists the self test errors that can occur during power supply operation.

Table 3-14: Self test error messages (Standard Event Status Register bit 3)

Code Message

0Noerror

1 Module Initialization Lost

Mainframe Initialization Lost

Module C alibration Lost

Non-volatile RAM STATE section checksum failed

Non-volatile RAM RST section checksum failed

RAM selftest

Flash write failed

Flash erase failed

Digital I/O selftest error

3-12 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Status and Events

Device Dependent Errors

The following t

able lists the device errors that can occur during power supply

operation. These errors may indicate that the power supply needs repair.

Table 3-15: Device dependent error messages (DDE bit 3)

Code Message

220 Front panel uart overrun

221

222 Front panel

223

224 Front panel timeout

225

226

401

402

403

404

405

406

407

603

604 Measurement overrange

Front panel uart framing

uart parity

Front pane

Front Crc Check error

Front Cmd Error

CAL switch prevents calibration

CAL password is incorrect

CAL not enabled

Computed readback cal constants are incorrect

Computed programming cal constants are incorrect

Incorrect sequence of calibration commands

CV or CC status is incorrect for this command

FETCH of data that was not acquired

l buffer overrun

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual 3-13

Status and Events

3-14 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Appendices

Appendix A: ASCII Code Chart

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual A-1

Appendix A: ASCII Code Chart

A-2 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Appendix B: Programming Examples

Example 1

This example i It demonstrates basic communication with the power supply and error checking. The program establishes communication with the power supply and puts it into remote mode. It then initializes the voltage and current and turns the output on. It sends new values for the voltage and current, and reads back the actual meter values before turning off the power supply output and closing communications.

s written in the C programming language; NIVISA can be used.

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual B-1

#include "stdafx.h" #include <visa.h> #include <stdio.h> #include <string.h> #include <time.h> #include <conio.h> #include <stdlib.h> ViSession defaultRM; // Resource manager ID ViSession KI200; // Identifies the power supply long ErrorStatus; char commandString[256]; char ReadBuffer[256]; void OpenPort(); void SendSCPI(char* pString); void CheckError(char* pMessage); void delay(clock_t wait); void ClosePort(); int main(int argc, _TCHAR* argv[]) { char Buffer[256]; float setting[3][2]={ {11.9, 0.55}, {15.15, 0.25}, {2.5, 0.15} } ; // Voltage, current for three channels float query[3][2]; unsigned int i; OpenPort(); // Query the power supply ID, read the response and print it sprintf(Buffer, "*IDN?"); SendSCPI(Buffer); printf("Instrument identification string:%s \n", Buffer); SendSCPI("*RST"); // Reset the power supply SendSCPI("OUTPut 1"); // Turn the output on for (i=0; i<3; i++) { printf("setting Channel: %d, voltage(V):%f, current(A):%f \n", i+1, setting[i][0], setting[i][1]); ErrorStatus = viPrintf(KI200, "INSTrument:NSELect %d\n", i+1); // Select the channel CheckError("Unable to select the channel"); ErrorStatus = viPrintf(KI200,"VOLTage %f\n",setting[i][0]); // Set the output voltage CheckError("Unable to set voltage"); ErrorStatus = viPrintf(KI200, "CURRent %f\n",setting[i][1]); // Set the output current CheckError("Unable to set current"); } SendSCPI("*SAV 4"); delay (10); for (i=0; i<3; i++)

B-2

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

{ ErrorStatus = viPrintf(KI200, "INSTrument:NSELect %d\n", i+1); //Select the channel CheckError("Unable to select the channel"); ErrorStatus = viPrintf(KI200,"Measure:voltage?\n"); // Measure the output voltage CheckError("Unable to write the device"); ErrorStatus = viScanf(KI200,"%f",&query[i][0]); // Retrieve the reading CheckError("Unable to read voltage"); ErrorStatus = viPrintf(KI200,"Measure:current?\n"); // Measure the output current CheckError("Unable to write the device"); ErrorStatus = viScanf(KI200,"%f",&query[i][1]); // Retrieve the reading CheckError("Unable to read current"); printf("Channel: %d, measured voltage(V):%f, current(A):%f \n", i+1, query[i][0], query[i][1]); } return 0; } void OpenPort() { //Open communication session with the power supply ErrorStatus = viOpenDefaultRM(&defaultRM); ErrorStatus =viOpen(defaultRM, "USB0::0X0699::0X0397::083001106673201002::INSTR",0,0,&KI200);

/*When using the GPIB interface, replace the above command line with "GPIB0::21::INSTR". Note the argument "21" is an example and refers to the GPIB address. Substitute the appropriate GPIB address in the command line.*/

CheckError("Unable to open the port"); SendSCPI("SYSTem:REMote"); } void SendSCPI(char* pString) { char* pdest; strcpy(commandString,pString); strcat(commandString, "\n"); ErrorStatus = viPrintf(KI200, commandString); CheckError("Can't Write to Power Supply"); pdest = strchr(commandString, '?'); // Search for the query command if (pdest != NULL) { ErrorStatus = viBufRead(KI200, (ViBuf)ReadBuffer, sizeof(ReadBuffer), VI_NULL); CheckError("Can't read from driver"); strcpy(pString, ReadBuffer); } } void ClosePort() {

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual B-3

viClose(KI200); viClose(defaultRM); } void CheckError(char* pMessage) { if(ErrorStatus != VI_SUCCESS) { printf("\n %s",pMessage); ClosePort(); exit(0); } } void delay(clock_t wait) { clock_t goal; goal = wait + clock(); while(goal > clock()); }

B-4

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Appendix B: Programming Examples

Example 2

This example is can be used. It demonstrates establishing a connection with the power supply, putting it into remote mode, initializing the current and voltage for channel 1 and channel 2, and initializing the track settings function.

written in the C programming language; TekVISA or NIVISA

Series 2000 Programmable Multitichannel Power Supplies Programmer Manual B-5

#include "stdafx.h" #include <visa.h> #include <stdio.h> #include <string.h> #include <time.h> #include <conio.h> #include <stdlib.h> ViSession defaultRM; // Resource manager ID ViSession KI200; // Identifies power supply long ErrorStatus; char commandString[256]; char ReadBuffer[256]; void OpenPort(); void SendSCPI(char* pString); void CheckError(char* pMessage); void delay(clock_t wait); void ClosePort(); int main(int argc, _TCHAR* argv[]) { char Buffer[256]; float setting[2][2] = { {2.5, 0.1}, {7.5, 0.2} }; // Initial the voltage and current for CH1 and CH2 float voltage, current; unsigned int i; OpenPort(); // Query the power supply ID, read the response and print it sprintf(Buffer, "*IDN?"); SendSCPI(Buffer); printf("Instrument identification string:%s \n", Buffer); SendSCPI("*RST"); // Reset the power supply SendSCPI("OUTPut 1"); // Turn output on SendSCPI("OUTPut:TRACK 0"); // Check that the track function is turned off for (i=0; i<2; i++) { printf("initial value for Channel: %d, voltage(V):%f, current(A):%f \n", i+1, setting[i][0], setting[i][1]); ErrorStatus = viPrintf(KI200,"APPLy CH%d, %f, %f\n",i+1, setting[i][0], setting[i][1]); //set the output valtage CheckError("Unable to use APPLy command to set voltage and current"); } delay(10); SendSCPI("OUTPut:TRACK 1"); // Enable the track function delay(5); // Change the voltage and current for CH1; the values for CH2 will change automatically voltage = 5.5; current = 0.23;

B-6 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

ErrorStatus = viPrintf(KI200,"APPLy CH1, %f, %f\n", voltage, current); //Set the output voltage CheckError("Unable to use APPLy command to set voltage and current"); return 0; } void OpenPort() { // Open communication session with the power supply ErrorStatus = viOpenDefaultRM(&defaultRM); ErrorStatus =viOpen(defaultRM, "USB0::0X0699::0X0397::083001106673201002::INSTR",0,0,&KI200);

CheckError("Unable to open the port"); SendSCPI("SYSTem:REMote"); } void SendSCPI(char* pString) { char* pdest; strcpy(commandString,pString); strcat(commandString, "\n"); ErrorStatus = viPrintf(KI200, commandString); CheckError("Can't Write to Power Supply"); pdest = strchr(commandString, '?'); // Search for query command if (pdest != NULL) { ErrorStatus = viBufRead(KI200, (ViBuf)ReadBuffer, sizeof(ReadBuffer), VI_NULL); CheckError("Can't read from driver"); strcpy(pString, ReadBuffer); } } void ClosePort() { viClose(KI200); viClose(defaultRM); } void CheckError(char* pMessage) { if(ErrorStatus != VI_SUCCESS) { printf("\n %s",pMessage); ClosePort(); exit(0); } }

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual B-7

void delay(clock_t wait) { clock_t goal; goal = wait + clock(); while(goal > clock()); }

B-8 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Appendix B: Programming Examples

Example 3

This example is can be used. The program demonstrates setting trigger settings.

written in the C programming language; TekVISA or NIVISA

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual B-

#include "stdafx.h" #include <visa.h> #include <stdio.h> #include <string.h> #include <time.h> #include <conio.h> #include <stdlib.h> ViSession defaultRM; // Resource manager ID ViSession KI200; // Identifies the power supply long ErrorStatus; char commandString[256]; char ReadBuffer[256]; void OpenPort(); void SendSCPI(char* pString); void CheckError(char* pMessage); void delay(clock_t wait); void ClosePort(); int main(int argc, _TCHAR* argv[]) { char Buffer[256]; float trig_setting[3][2]={ {11.9, 0.55}, {16.15, 0.25}, {2.5, 0.15} }; // Voltage, current for trigger unsigned int i; OpenPort(); // Query the power supply ID, read the response and print it sprintf(Buffer, "*IDN?"); SendSCPI(Buffer); printf("Instrument identification string:%s \n", Buffer); SendSCPI("*RST"); // Reset the power supply SendSCPI("OUTPut 1"); // Turn the output on for (i=0; i<3; i++) { printf("setting Channel: %d, voltage(V):%f, current(A):%f \n", i+1, trig_setting[i][0], trig_setting[i][1]); ErrorStatus = viPrintf(KI200, "INSTrument:NSELect %d\n", i+1); // Select the channel CheckError("Unable to select the channel"); // Set the output valtage ErrorStatus = viPrintf(KI200,"VOLTage:TRIGgered %f\n",trig_setting[i][0]); CheckError("Unable to set voltage"); // Set the output current ErrorStatus = viPrintf(KI200, "CURRent:TRIGgered %f\n",trig_setting[i][1]); CheckError("Unable to set current"); } // Select the channels that will respond the trigger command SendSCPI("INSTrument:COUPle ALL");

B-10 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

SendSCPI("*TRG"); return 0; } void OpenPort() { // Open communication session with the power supply ErrorStatus = viOpenDefaultRM(&defaultRM); ErrorStatus =viOpen(defaultRM, "USB0::0X0699::0X0397::083001106673201002::INSTR",0,0,&KI200);

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual B-11

{ clock_t goal; goal = wait + clock(); while(goal > clock()); }

B-12 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Appendix B: Programming Examples

Example 4

This example sh

ows a command sequence that conﬁgures series mode, output

voltage, and current.

Talker Listen configure the output voltage and current.

SYSTem:REM

*IDN?

*RST

INSTrument:COMBine:SERies

OUTPut 1

VOLTage 35

CURRent

OUTPut:SERies?

*OPC

MEASure:VOLTage?

MEASure:CURRent?

0.3

er Script1: co nfigure to the series mode and

ote

Example 5

example shows a command sequence that uses the APPLy command to

This conﬁgure voltage and current values.

ker Listener Script2: use the APPLy command to configure

Tal the voltage and current value.

Tem:REMote

SYS

*IDN?

*RST

OUTPut 1

APPLy CH1,15.0,1

APPLy CH2,10.0,0.5

APPLy CH3,5.0,0.1

*OPC

MEASure:VOLTage? ALL

MEASure:CURRent? ALL

Series 2000 Programmable Multichannel Power Supplies Programmer Manual B-13

Appendix B: Programming Examples

Example 6

This example sh

ows a command sequence to couple all outputs with voltage

and current triggered levels.

Talker Listen to couple all output with voltage and current triggered levels.

SYSTem:REMote

*IDN?

*RST

OUTPut 1

INSTrument:NSELect 1

VOLTage:TRIGgered 6

CURRent:TRIGgered 0.2

INSTru

VOLTage:TRIGgered 10

CURRent:TRIGgered 0.5

INSTrument:NSELect 3

ment:NSELect 2

er Script1: us e the INSTrument:COUPle command

VOLTage:TRIGgered 1

CURRent:TRIGgered 0.1

Trument:COUPle CH1, CH2, CH3

INS

*TRG

B-14 Series 2000 Programmalable Multichannel lDC Power Supplies P rogrammer

Appendix C: Default Setup

The following table lists the settings that are restored when you return the power supply to default settings.

Tabl e C-1: D

Menu or system Default setting

VOLT:LIM

VOLT:LIM:STAT OFF

OUTP OFF

VOLT

CURR

OUTP:TIM:DEL

OUTP:TIM OFF

efault settings

MAX

0.1 A

Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual C-1

Appendix C: Default Setup

C-2 Series 2200 Programmable Multichannel DC Power Supplies Programmer Manual

Tektronix Series 2200 Multichannel Programmable DC Power Supplies Programming Reference manual

Specifications and Main Features

Frequently Asked Questions

User Manual