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rINSTCONTROL/@MyRsa/MyRsa.m
f16024903936TekRSA-Freq-vs-Time

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MyRsa.m
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% Class for controlling Tektronix RSA5103 and RSA5106 spectrum analyzers
classdef MyRsa < MyScpiInstrument
properties (SetAccess=protected, GetAccess=public)
acq_trace=[] % Last read trace
end
%% Constructor and destructor
methods (Access=public)
function this=MyRsa(interface, address, varargin)
this@MyScpiInstrument(interface, address, varargin{:});
this.Trace.unit_x='Hz';
this.Trace.unit_y='$\mathrm{V}^2/\mathrm{Hz}$';
this.Trace.name_y='Power';
this.Trace.name_x='Frequency';
end
end
%% Protected functions
methods (Access=protected)
function createCommandList(this)
% Resolution bandwidth (Hz)
addCommand(this, 'rbw',':DPX:BAND:RES',...
'default',1e3,'fmt_spec','%e',...
'info','Resolution bandwidth (Hz)');
% If the rbw is auto-set
addCommand(this, 'auto_rbw',':DPX:BAND:RES:AUTO',...
'default',true,'fmt_spec','%b');
addCommand(this, 'span', ':DPX:FREQ:SPAN',...
'default',1e6,'fmt_spec','%e',...
'info','(Hz)');
addCommand(this, 'start_freq',':DPX:FREQ:STAR',...
'default',1e6,'fmt_spec','%e',...
'info','(Hz)');
addCommand(this, 'stop_freq',':DPX:FREQ:STOP',...
'default',2e6,'fmt_spec','%e',...
'info','(Hz)');
addCommand(this, 'cent_freq',':DPX:FREQ:CENT',...
'default',1.5e6,'fmt_spec','%e',...
'info','(Hz)');
% Initiate and abort data acquisition, don't take arguments
addCommand(this, 'abort_acq',':ABORt', 'access','w',...
'fmt_spec','');
addCommand(this, 'init_acq',':INIT', 'access','w',...
'fmt_spec','');
% Continuous triggering
addCommand(this, 'init_cont',':INIT:CONT','default',true,...
'fmt_spec','%b',...
'info','Continuous triggering on/off');
% Number of points in trace
addCommand(this, 'point_no',':DPSA:POIN:COUN',...
'default',10401, 'val_list',{801,2401,4001,10401},...
'fmt_spec','P%i');
% Reference level (dB)
addCommand(this, 'ref_level',':INPut:RLEVel','default',0,...
'fmt_spec','%e',...
'info','(dB)');
% Display scale per division (dBm/div)
addCommand(this, 'disp_y_scale',':DISPlay:DPX:Y:PDIVision',...
'default',10,'fmt_spec','%e',...
'info','(dBm/div)');
% Display vertical offset (dBm)
addCommand(this, 'disp_y_offset',':DISPLAY:DPX:Y:OFFSET',...
'default',0,'fmt_spec','%e',...
'info','(dBm)');
% Parametric commands
for i = 1:3
i_str = num2str(i);
% Display trace
addCommand(this, ['disp_trace',i_str],...
[':TRAC',i_str,':DPX'],...
'default',false,'fmt_spec','%b',...
'info','on/off');
% Trace Detection
addCommand(this, ['det_trace',i_str],...
[':TRAC',i_str,':DPX:DETection'],...
'val_list',{'AVER','AVERage','NEG','NEGative',...
'POS','POSitive'},...
'default','AVER','fmt_spec','%s');
% Trace Function
addCommand(this, ['func_trace',i_str],...
[':TRAC',i_str,':DPX:FUNCtion'],...
'val_list',{'AVER','AVERage','HOLD','NORM','NORMal'},...
'default','AVER','fmt_spec','%s');
% Number of averages
addCommand(this, ['average_no',i_str],...
[':TRAC',i_str,':DPX:AVER:COUN'],...
'default',1,'fmt_spec','%i');
% Count completed averages
addCommand(this, ['cnt_trace',i_str],...
[':TRACe',i_str,':DPX:COUNt:ENABle'],...
'default',false,'fmt_spec','%b',...
'info','Count completed averages');
end
end
end
%% Public functions including callbacks
methods (Access=public)
function readSingle(this, n_trace)
fetch_cmd = sprintf('fetch:dpsa:res:trace%i?', n_trace);
fwrite(this.Device, fetch_cmd);
data = binblockread(this.Device,'float');
readProperty(this, 'start_freq','stop_freq','point_no');
x_vec=linspace(this.start_freq,this.stop_freq,...
this.point_no);
%Calculates the power spectrum from the data, which is in dBm.
%Output is in V^2/Hz
power_spectrum = (10.^(data/10))/this.rbw*50*0.001;
%Trace object is created containing the data and its units
this.Trace.x = x_vec;
this.Trace.y = power_spectrum;
this.acq_trace=n_trace;
%Trigger acquired data event (inherited from MyInstrument)
triggerNewData(this);
end
% Extend readHeader function
function Hdr=readHeader(this)
%Call parent class method and then append parameters
Hdr=readHeader@MyScpiInstrument(this);
%Hdr should contain single field
addParam(Hdr, Hdr.field_names{1}, ...
'acq_trace', this.acq_trace, ...
'comment', 'Last read trace');
end
end
end
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