安捷伦示波器使用说明书_安捷伦信号发生器使用方法

本帖最后由 god_blessme 于 2017-9-19 13:45 编辑

小弟最近在搞一个程序，是要读取安捷伦示波器每一屏数据并储存，网上貌似对于tek示波器连接的比较多，安捷伦的超级少，所以大部分是自己看着改的命令，现在碰到的问题很奇葩，运行程序后一个figure显示的数据是正确的，一个figure显示的是错误的。然而我在循环里把waveform_YIncrement变量的注释去掉的话，figure的数据又正常了。想了好长时间不知道问题出在哪里，求对这方面熟悉的大师解答一下。下边是代码

clear;h=waitbar(0,’Please wait…’);

loop_number = 10;

%——————- b—-OSC——————————

recordLen=100000;

g = visa(‘AGILENT’,’TCPIP0::192.168.1.220::5025::SOCKET’);

set(g,’InputBufferSize’,recordLen*3);

fopen(g);

fprintf(g,’:WAVeform:SOURce CHANnel1′);

fprintf(g,’:WAVEFORM:FORMAT WORD’);

fprintf(g,’:WAVEFORM:BYTEORDER LSBFirst’);

fprintf(g,’:WAVeform:STReaming 1′);

preambleBlock = query(g,’:WAVEFORM:PREAMBLE?’);

preambleBlock = regexp(preambleBlock,’,’,’split’);

horizLen = str2double(preambleBlock{3});

waveform_YIncrement = str2double(preambleBlock{8});

waveform_YOrigin = str2double(preambleBlock{9});

waveform_Yreference = str2double(preambleBlock{10});

%——————————————————————–%

for cyclenum=1:10

recordLen2Transfer = min(recordLen,horizLen);

%    waveform_raw = zeros(recordLen2Transfer,1);

fprintf(g,’:WAVeform:DATA?’);

%    waveform_Raw = binblockread(g,’int 16′); fread(g,1);

[waveform_raw,count] = fread(g,recordLen2Transfer,’int16′);

%    waveform_YIncrement = query(g,’:WAVeform:YINCrement?’); % V

%    waveform_YIncrement = str2double(waveform_YIncrement);

waveform = (waveform_raw-waveform_Yreference) * waveform_YIncrement + waveform_YOrigin;

Data{cyclenum}= waveform;

waitbar(cyclenum/loop_number);

A=Data{cyclenum};

figure();

plot(A);

%subplot(2,5,cyclenum);

end

%——————————————————————–%

fclose(g);