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rINSTCONTROL/@MyScope/MyScope.asv
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MyScope.asv
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classdef MyScope <MyInstrument
properties (Access=public)
channel;
end
methods (Access=public)
function this=MyScope(interface, address, varargin)
this@MyInstrument(interface, address, varargin{:});
createCommandList(this);
createCommandParser(this);
switch interface
case 'TCPIP'
connectTCPIP(this);
case 'USB'
connectUSB(this);
end
end
function readTrace(this)
openDevice(this);
%Sets the channel to be read
writeProperty(this,'channel',this.channel);
%Sets the encoding of the data
fprintf(this.Device,'DATa:ENCdg ASCIi');
% Reading the relevant parameters from the scope
results = readProperty(this,'unit_y','unit_x',...
'step_x','step_y','y_data','x_zero');
closeDevice(this)
% Calculating the y data
y= results.y_data*results.step_y;
n_points=length(y);
% Calculating the x axis
x=linspace(results.x_zero,...
results.x_zero+results.step_x*(n_points-1),n_points);
this.Trace=MyTrace('filename','ScopeTrace','x',x,'y',y,...
'unit_x',char(results.unit_x),'unit_y',char(results.unit_y),...
'name_x','Time','name_y','Voltage');
%Triggers the event for acquired data
triggerNewData(this);
end
end
methods (Access=private)
function createCommandList(this)
addCommand(this,'channel','DATa:SOUrce','default',1,...
'classes',{'numeric'},'attributes',{'integer'},...
'access','rw','str_spec','CH%i');
addCommand(this,'unit_x','WFMOutpre:XUNit','access','r',...
'classes',{'char'});
addCommand(this,'unit_y','WFMOutpre:YUNit','access','r',...
'classes',{'char'});
addCommand(this,'step_y','WFMOutpre:YMUlt','access','r',...
'classes',{'numeric'});
addCommand(this,'step_x','WFMOutpre:XINcr','access','r',...
'classes',{'numeric'});
addCommand(this,'x_zero','WFMOutpre:XZEro','access','r',...
'classes',{'numeric'});
addCommand(this,'y_data','CURVe','access','r',...
'classes',{'numeric'});
addCommand(this, 'point_no');
addCommand(this, 'span');
addCommand(this, 'trig_source');
addCommand(this, 'trig_lev')
% Parametric commands
for i = 1:4
% coupling, AC, DC or GND
i_str = num2str(i);
addCommand(this,...
['cpl',i_str],['CH',i_str,':COUP'],...
'default','DC',...
'str_spec','%s');
% impedances, 1MOhm or 50 Ohm
addCommand(this,...
['imp',i_str],['CH',i_str,':IMPedance'],...
'default','MEG',...
'str_spec','%s');
% offset
addCommand(this,...
['offset',i_str],['CH',i_str,':OFFSet'],...
'default','MEG',...
'str_spec','%s');
% scale
% channel visible
end
end
function connectTCPIP(this)
this.Device= visa('ni',...
sprintf('TCPIP0::%s::inst0::INSTR',this.address));
set(this.Device,'InputBufferSize',1e6);
set(this.Device,'Timeout',2);
end
function connectUSB(this)
this.Device=visa('ni',sprintf('USB0::%s::INSTR',this.address));
set(this.Device,'InputBufferSize',1e6);
set(this.Device,'Timeout',2);
end
end
%% Set functions
methods
function set.channel(this, channel)
if any(channel==1:4)
this.channel=channel;
else
this.channel=1;
warning('Select a channel from 1 to 4')
end
end
end
end
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