使用matlab发送SCPI,怎么使用matlab创建和发送arb

matlab程序，向您展示如何使用matlab中的Agilent 33210A，33220A或33250A打开签证会话并下载任意波形并使用函数发生器输出。

这个例子是一个非常基本的脉冲波形，你可以创建更复杂的波形，我只想做一个简单的例子让人们开始.--------------------

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-----------％{AsciiArb是一个示例程序，演示如何下载任意waveforminto仪器易失性存储器并使用以下配置回放相同的内容：此arb生成8192点脉冲波形，其中

波前形状：ArbAmplitude：2 Volt Peak to PeakOffset：0 VoltOutput Impedance：50 OhmOutput：EnabLED此示例适用于Agilent 33210A，33220A和33250A％}前400个点定义从0伏到最大定义电压幅度的正向脉冲。波形

％清除所有变量，关闭所有打开的文件清除所有;

关闭所有;

clc;％打开并创建一个签证会话，用于与函数generatoRFgen = visa('AGILENT'，'TCPIP0 :: 156.140.92.62 :: inst0 :: INSTR')进行通信;设置(fgen，'OutputBufferSize'，100000); fopen(

fgen);％查询Idendity字符串和reportfprintf(fgen，'* IDN？'); idn = fscanf(fgen); fprintf(idn)fprintf('\ n \ n')％清除并重置instrumentfprintf(fgen，'* RST

'); fprintf(fgen，'* CLS');％使用8192点0-1 datafprintf创建arb波形('生成波形... \ n \ n')rise = [];对于i = 1：1：

10％设定上升时间(10分)* / z =(i-1)/ 10;

y = num2str(z);

s1 = sprintf('，％s'，y);

上升= [上升s1];

end width = [];对于i = 11：1：411％设置脉冲宽度(400点)* / y = num2str(1);

s2 = sprintf('，％s'，y);

width = [width s2];

end fall = []; for i = 412：1：422％设置下降时间(10分)* / z =(422-i)/ 10;

y = num2str(z);

s3 = sprintf('，％s'，y);

跌倒= [跌倒s3];

结束低= [];对于i = 423：1：8192％将剩余点设置为零* / y = num2str(0);

s4 = sprintf('，％s'，y);

低= [低s4];

end％组合所有字符串s = [上升宽度下降低];

％将数据字符串与scpi commandarbstring = sprintf('DATA VOLAtiLE％s'，s)组合在一起;

％Send命令设置所需的configurationfprintf('下载波形... \ n \ n')fprintf(fgen，arbstring);

％make instrument等待数据下载，然后转到下一个％命令setfprintf(fgen，'* WAI'); fprintf('Download Complete \ n \ n')％设置所需的配置。

fprintf(fgen，'VOLT 2');

％将最大波形幅度设置为2 Vpp fprintf(fgen，'VOLT：OFFSET 0');

％将偏移设置为0 V fprintf(fgen，'OUTPUT：LOAD 50');

％将输出负载设置为50欧姆fprintf(fgen，'FREQ 1000');

％设定频率为1KHz fprintf(fgen，'FUNC：USER VOLATILE');

fprintf(fgen，'FUNC：SHAP USER');

％启用输出fprintf(fgen，'OUTPUT ON');

％打开通道1输出％读取Errorfprintf(fgen，'SYST：ERR？'); errorstr = fscanf(fgen);％error checkingIF strncmp(errorstr，'+ 0，“No error”'，13)errorcheck ='Arbitrary

生成的波形没有任何错误\ n';

fprintf(错误检查)else errorcheck = ['错误报告：'，errorstr];

fprintf(errorcheck)end％用函数generatorfclose(fgen)关闭签证会话;

以上来自于谷歌翻译

以下为原文

Attached is a short matlab program that shows you how to open a visa session with an Agilent 33210A, 33220A, or 33250A in matlab and download an arbitrary waveform and output it with the function generator.  The example is a very basic pulse waveform, you can create much more complex waveforms, I just wanted to make a simple example to get people started.

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%{

AsciiArb is a sample program that demonstrates how to download an arbitrary waveform

into instrument volatile memory and play back the same with the configuration below:

This arb generates a 8192 point pulse waveform, of which the first 400 points define a

positive pulse from 0 volts to the maximum defined voltage amplitude.

Wave Shape: Arb

Amplitude:     2 Volt Peak to Peak

Offset:          0 Volt

Output Impedance:     50 Ohm

Output: Enabled

This example will work with the Agilent 33210A, 33220A, and 33250A

%}

% clears all variables, closes all open files

clear all; close all; clc;

%opens and creates a visa session for communication with function generator

fgen = visa('AGILENT','TCPIP0::156.140.92.62::inst0::INSTR');

set (fgen,'OutputBufferSize',100000);

fopen(fgen);

%Query Idendity string and report

fprintf (fgen, '*IDN?');

idn = fscanf (fgen);

fprintf (idn)

fprintf ('\n\n')

%Clear and reset instrument

fprintf (fgen, '*RST');

fprintf (fgen, '*CLS');

% Create arb waveform with 8192 points of 0-1 data

fprintf('Generating Waveform...\n\n')

rise=[];

for i = 1:1:10        % Set rise time (10 points) */

z = (i-1)/10;

y = num2str(z);

s1 = sprintf(', %s', y);

rise = [rise s1];

end

width=[];

for i= 11:1:411      % Set pulse width (400 points) */

y = num2str(1);

s2 = sprintf(', %s', y);

width = [width s2];

end

fall=[];

for i = 412:1:422   % Set fall time (10 points) */

z= (422 - i)/10;

y = num2str(z);

s3 = sprintf(', %s', y);

fall = [fall s3];

end

low=[];

for i = 423:1:8192   % Set remaining points to zero */

y = num2str(0);

s4 = sprintf(', %s', y);

low = [low s4];

end

%combine all of the strings

s = [rise width fall low];

% combine string of data with scpi command

arbstring =sprintf('DATA VOLATILE %s', s);

%Send Command to set the desired configuration

fprintf('Downloading Waveform...\n\n')

fprintf(fgen, arbstring);

%make instrument wait for data to download before moving on to next

%command set

fprintf(fgen, '*WAI');

fprintf('Download Complete\n\n')

%Set desired configuration.

fprintf(fgen,'VOLT 2'); % set max waveform amplitude to 2 Vpp

fprintf(fgen,'VOLT:OFFSET 0'); % set offset to 0 V

fprintf(fgen,'OUTPUT:LOAD 50'); % set output load to 50 ohms

fprintf(fgen,'FREQ 1000'); %set frequency to 1KHz

fprintf(fgen,'FUNC:USER VOLATILE');

fprintf(fgen,'FUNC:SHAP USER');

%Enable Output

fprintf(fgen,'OUTPUT ON'); % turn on channel 1 output

% Read Error

fprintf(fgen, 'SYST:ERR?');

errorstr = fscanf (fgen);

% error checking

if strncmp (errorstr, '+0,"No error"',13)

errorcheck = 'Arbitrary waveform generated without any error \n';

fprintf (errorcheck)

else

errorcheck = ['Error reported: ', errorstr];

fprintf (errorcheck)

end

%closes the visa session with the function generator

fclose(fgen);

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