Elements eONE - Page 36

32
elements
enabling technologies for Life Science
SECTION 3 – Software installation and description
if strfind(line, 'Sampling frequency (SR):') >= 0
[unused, firstToken] = strtok(line);
[unused, secondToken] = strtok(firstToken);
[unused, thirdToken] = strtok(secondToken);
switch str2double(strtok(thirdToken))
case 200
OSR = 50;
sampl = 10000000; % HS -> 10 MHz sampling
case 100
OSR = 100;
sampl = 10000000; % HS -> 10 MHz sampling
case 50
OSR = 200;
sampl = 10000000; % HS -> 10 MHz sampling
case 40
OSR = 32;
case 20
OSR = 64;
case 10
OSR = 128;
case 5
OSR = 256;
case 1.25
OSR = 1024;
end
end
end
if OSR == 0
OSR = 64;
display('Warning: cannot read sampling rate from header file, using default (20 kHz)');
end
fclose(fid); % close file
else
% select number of channels
display('Enter number of channels:');
sel = input('N: ');
Nch = str2double(sel);
% select sampling frequency
display('Select bandwidth:');
display('1) 625 Hz');
display('2) 1.25 kHz');
display('3) 5 kHz');
display('4) 10 kHz');
display('5) 20 kHz');
sel = input('select 1,2,3,4,5: ');
switch sel
case 1
OSR = 1024;
case 2
OSR = 512;
case 3
OSR = 128;
case 4
OSR = 64;
case 5
OSR = 32;
otherwise
display('Error: invalid selection');
return
end
% select range
display('Select range:');
display('1) 200 pA');
display('2) 20 nA');
sel = input('select 1,2: ');