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esca User’s Manual v1.2 

 

 

 

The EDR software creates a new folder in the location chosen by the user with the same 
name of the saving files. In this new folder the EDR software creates some files: 

 

An header .txt file containing some ESCA setup information (Range, Bandwidth, 
etc.). 

 

The saved data files. 

The  EDR  software  create  a  new  data  file  every 

n

  minutes  of  acquisition  to  limit  the 

maximum file dimensions. 

n

 is set in the preferences menu. This feature is not available 

when saving in .abf data format. 

The proprietary .dat files can be handily read by Matlab® with the included function in 
the 

ESCAread.m

  file  located  in  the  installation  directory  (usually  C:\\Program  Files 

(x86)\Elements Data Reader). 

Data samples are stored in standard 32 bit single precision format, little endian. 

The ESCAread Matlab® function will ask you the location of the saved data files and the 
data bandwidth. 

The function returns in three vectors the data, Vc and time values. 

To load saved data, just type in the Matlab® command windows: 

 

[Data, Vc, Time] = ESCAread(); 

 

The data are in 

pA

 units if the selected range is 200 pA and in 

nA

 units if it is 20 nA. 

Here is the ESCAread Matlab® function: 

function [ data, vc, time ] = ESCAread( ) 
% edr_read 
%   Function to read data saved in binary format from the EDR software 

%   returns: 
%   data - An array of data, one channel in every column; 
%   vc - A vector reprensenting the command voltage Vc; 
%   time - The time vector; 

 
% select data file 
[filename, pathname] = uigetfile('*000.dat'); 
 
% check for valid data file name 
if length(filename) < 9 
    display('Error: invalid file name'); 
    exit 
end 
if ~strcmp(filename(end-7:end), '_000.dat') 
    display('Error: invalid file name'); 

Summary of Contents for esca

Page 1: ...esca Elements Single Channel Amplifier User s Manual v1 2 February 2014...

Page 2: ...esca User s Manual v1 2 CONTACTS Elements s r l via Montalti 42 47521 Cesena ITALY email info elements ic com web www elements ic com...

Page 3: ...SETUP 4 Front Connections 5 Rear Connections 5 Tipical Experimental Setup 5 SOFTWARE GUIDE 6 Requirements 7 Installation 7 Software Operating Procedure 9 Graphical User Interface 10 ESCA Setup 11 Digi...

Page 4: ...all size 30x15x74mm software included HARDWARE SETUP ESCA is designed to be as simple as possible to connect to your various different setups In order to obtain the best performance the main things to...

Page 5: ...ct is the reference voltage IMPORTANT Do NOT short the reference to the ground REAR CONNECTIONS On the rear of ESCA there are two connectors mini B female USB connector to connect to the PC through th...

Page 6: ...ssible from the Faraday cage including your Device Under Test DUT With certain PC there can be some issues with USB power supply that can introduce noise and peaks on the acquired signal In these case...

Page 7: ...ements are Dual core processor 1GHz or better 1GB of RAM A free USB 2 0 port Windows XP Vista Seven 8 INSTALLATION To start the installation procedure double click on the installation executable EDR_s...

Page 8: ...esca User s Manual v1 2 Click on Extract to prepare the installation of these drivers Then start the FTDI installation by clicking on Next button and wait until installation finishes...

Page 9: ...ree USB port The first time you connect the ESCA to your PC you must wait for the new USB device complete recognition NOTE If the blue LED in the rear of ESCA doesn t light up or if you receive an ins...

Page 10: ...with the ESCA hardware The configuration file is loaded by clicking on the Open Config button The configuration file is ESCA_xxx cfg where xxx is the firmware version of your ESCA device The configura...

Page 11: ...addition to the Open Config button already described in the previous section the following buttons Connect Starts the communication with the ESCA hardware Show Displays the data visualization window...

Page 12: ...the next section the digital compensation is described The Triangular Wave check box is used to force a 48 Hz triangular wave control voltage of peak to peak amplitude of 118 mVpp This voltage signal...

Page 13: ...software includes some statistical data analysis done in real time during the current acquisitions These estimated statistic data are Mean value Standard Deviation STD Equivalent input capacitance Equ...

Page 14: ...on the R estimation button The Saturation indicator means the input current exceeded the maximum or minimum current value for the selected Range TRACE VISUALIZATION The data visualization is based on...

Page 15: ...om level Set vertical 0 point in the middle of the window Change the grid dimensions Change the vertical offset shift Change the horizontal offset shift Search for a channel NB useless with ESCA devic...

Page 16: ...mat used by commercial pClamp software from Molecular Devices First choose which format will be used by clicking on File Preferences To start saving data click on the Save button The data are saved in...

Page 17: ...es are stored in standard 32 bit single precision format little endian The ESCAread Matlab function will ask you the location of the saved data files and the data bandwidth The function returns in thr...

Page 18: ...an array with 2 columns 1 channels vc C reshape B 1 2 fix length B 2 2 D C select sampling frequency display Select bandwidth display 1 625 Hz display 2 1 25 kHz display 3 5 kHz display 4 10 kHz sel i...

Page 19: ...esca User s Manual v1 2...

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