T72 T108 Frequency Sweep Tool - atmel-maxtouch/mxt-app GitHub Wiki

Frequency Sweep Tool Options

The frequency sweep tool option uses one of the NOISY state to sweep through a set of parameters to monitor system noise.

The input parameters include the following:

Start Frequency             : Indicates start of frequency sweep, a number from 0 to 255
End Frequency               : Indicates end of frequency sweep, a number from 1 to 255
Step Size                   : Frequency step size, typically set to 1
Step Duration               : Duration of each scan, either done by frames or seconds. Values greater than 1 are averaged
Noise Suppression Object    : Selection of either T72 or T108 object
ADC's Per X                 : Number of ADC's per X to average noise samples
Noise Line GAIN Setting     : GAIN of either single X or dual X during noise captures
Constant or Variable ADCs   : Constant or variable ADC's per X - Constant only supported at this time
Dual X                      : Selection of Dual X or Single X

The commands available for this feature are listed:

--freq-sweep FILE           : Required input parameters for frequency sweep feature. FILE - input test parameter file
-o [--output] FILE          : Output filename for frequency sweep results.  
                              Output file is compatible with Frequency Sweep Tool Viewer in MTS

Example:

./mxt-app --freq-sweep fs_setup.txt --output fs_output.txt

A file within the subdirectory /src/test/fs_setup.txt provides details on the input parameters required to setup the test. The fs_setup.txt should be located in the same directory as mxt-app or where mxt-app is executed if in the system PATH.

Output file will be located in the same directory as the mxt-app. Ensure the directory has write access.