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Hagar
Posts:
1
Registered:
11/21/12
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matlab-instrument interface problem..
Posted:
Nov 21, 2012 2:20 AM
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Hello all,
I'm having some trouble talking to a lockin amplifier through a matlab Gui program.
the command window keeps throwing the Error:
'Instrument object OBJ is an invalid object.'
while running the lines writing and reading data from the instruments:
Stn1=data.handles.Stn;
% Reading Current Aux mode
clrdevice(Stn1);
par.V= YOKO7651ReadVoltage(data.handles.Yoko);
%par.V=1;
pause(0.1) %
fprintf(Stn1, ['OF.' num2str(FREQ)]); %sets oscilator frequency
pause(0.1) %
fprintf(Stn1, ['OA.' num2str(SLVL1)]); %sets oscilator output voltage
pause(0.1) %
%fprintf(Stn1, ['XOF [0]'] );
% clears memory of instrument
pause(.1) %
fprintf(Stn1, 'X.');
pause(.1) %
Vtc= str2double(fscanf(Stn1));
This, although I already debugged the program and make sure it is working in debugging mode. When I run the Gui from start it just gets stuck with that Error.
anyone has an idea what could it be?
Message was edited by: Hagar
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