Keysight B2980 Series Instrucciones de funcionamiento

Keysight B2980 Series 

Femto/Picoammeter 

Electrometer/High Resistance Meter

Programming Guide

Notices

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Manual Part Number

B2980-90020

Edition

Edition 1, September 2014

Keysight Technologies

1400 Fountaingrove Parkway 

Santa Rosa, CA 95403

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In This Manual

This manual provides the information for controlling Keysight Technologies B2980 by

using an external computer, and consists of the following chapters.

•“Controlling Keysight B2980”

•“Programming Examples”

See Keysight B2980 User's Guide for information about the B2980 itself.

Refer to Keysight B2980 SCPI Command Reference for the SCPI messages and

conventions, data output format, error code, and the details on Keysight B2980 SCPI

commands.

Contents

Keysight B2980 Programming Guide, Edition 1

1. Controlling Keysight B2980

Before Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Controlling Various Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Controlling the Measurement Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

Controlling the Source Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

Using the Math Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

Performing the Limit Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-18

Using the Trace Buffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

Using Program Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22

2. Programming Examples

Preparations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Spot Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Staircase Sweep Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

List Sweep Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

Sampling Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19

Pass/Fail Judgement and Math Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

Using Program Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27

Reading Binary Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30

Reading Data during Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32

Keysight B2980 Programming Guide, Ed ition 1

Contents

1Controlling Keysight B2980

1-2 Keysight B2980 Programming Guide, Ed ition 1

Controlling Keysight B2980

This chapter describes basic information to control Keysight B2980, and consists of

the following sections.

•“Before Starting”

•“Controlling Various Functions”

•“Controlling the Measurement Function”

•“Controlling the Source Output”

•“Using the Math Function”

•“Performing the Limit Test”

•“Using the Trace Buffer”

•“Using Program Memory”

The following conventions are used in this document for expressing SCPI

commands.

Convention Description

Angle

brackets < > Items within angle brackets are parameter abbreviations. For

example, <NR1> indicates a specific form of numerical data.

Vertical bar | Vertical bars separate alternative parameters. For example,

VOLT | CURR indicates that either “VOLT” or “CURR” can

be used as a parameter.

Square

brackets [ ] Items within square brackets are optional. The representation

[SENSe:]VOLTage means that SENSe: may be omitted.

Parentheses ( ) Items within parentheses are used in place of the usual

parameter types to specify a channel list. The notation (@1:3)

specifies a channel list that includes channels 1, 2, and 3. The

notation (@1,3) specifies a channel list that includes only

channels 1 and 3.

Braces { } Braces indicate parameters that may be repeated zero or more

times. It is used especially for representing arrays. The notation

<A>{,<B>} shows that parameter “A” must be entered, while

parameter “B” omitted or may be entered one or more times.

Keysight B2980 Programming Guide, Ed ition 1 1-3

Controlling Keysight B2980

Before Starting

This section describes the information needed before starting programming.

•“Software Requirements”

•“Connecting to the Interface”

•“Starting the Instrument Control”

Software Requirements

Programming examples described in this manual use the following software. Install

the software to your computer to execute the programming examples.

• Keysight IO Libraries Suite software

• Microsoft Visual Basic .NET software

Connecting to the Interface

Keysight B2980 supports GPIB, LAN, and USB interfaces. All three interfaces are

live at power-on. Select the interface used for controlling the B2980. Connect your

interface cable to the appropriate interface connector.

For the information on configuring the interfaces, see Keysight B2980 Series User’s

Guide.

1-4 Keysight B2980 Programming Guide, Ed ition 1

Controlling Keysight B2980

Before Starting

Starting the Instrument Control

The following program code is one of the simple program template for starting and

ending the communication between the computer and the instrument. For using the

code, the instrument address must be set to the address variable correctly.

Sub Main()

Dim rm As Ivi.Visa.Interop.ResourceManager

Dim ioObj As Ivi.Visa.Interop.FormattedIO488

Dim address As String = "enter address of your instrument"



rm = New Ivi.Visa.Interop.ResourceManager

ioObj = New Ivi.Visa.Interop.FormattedIO488

ioObj.IO = rm.Open(address)

’ insert your code for instrument control

ioObj.IO.Close()

End Sub

The address value depends on the interface as shown below.

• For using the GPIB interface

The address value is the VISA GPIB Connect String displayed on the GPIB

Configuration dialog box opened by pressing the System Menu > More > I/O >

GPIB function keys.

Example:

address = "GPIB0::23::INSTR"

• For using the USB interface

The address value is the VISA USB Connect String displayed on the USB

Status dialog box opened by pressing the System Menu > More > I/O > USB

function keys.

Example:

address = "USB0::2391::12345::XY00001234::0::INSTR"

• For using the LAN interface

The address value is as follows.

address = "TCPIP0::xxx.yyy.zzz.aaa::5025::SOCKET"

Where, xxx.yyy.zzz.aaa is the IP Address displayed on the LAN Configuration

dialog box opened by pressing the System Menu > More > I/O > LAN > Config

function keys.

Example:

address = "TCPIP0::192.168.0.1::5025::SOCKET"

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