EVAL-AD73360LEB Datasheet, PDF (4/9 Pages) Analog Devices – AD73360L Evaluation Board, Six Input Channel Analog Front End

EVAL-AD73360(L)EB
Figure 4. The Demonstration Screen
Demonstration Programs
The demonstration programs provided with the
AD73360(L) evaluation board allow the user to program
the device and read data from one or more channels. The
samples are automatically uploaded and graphed once they
have been acquired. In addition a Fast Fourier Transform
(FFT) is performed and the Signal to Noise+Distortion
Ratio (SNR+D) is calculated for all selected channels.
The demonstration programs sample data at either 8KHz
or 64KHz. The DSP source code for each demonstration
program is included and can be modified and recompiled
if required¹.
Running a Demonstration Program
With the evaluation board powered up and connected to
the PC the user can download the required program to the
evaluation board by pressing the Download Program
button. This will display a dialog box from which the user
can select the required program. When the OPEN button
is clicked the evaluation board is reset and the program is
downloaded. If the Run on Download option is not se-
lected the user must click the Run button to start the pro-
gram running. The user should ensure that the correct
sample rate is selected by clicking on the Options/AD73x60
Options menu item. The user also has the option to alter
the band of interest over which the SNR+D is calculated
and change the number of samples to take. Note that the
number of samples which can be taken is limited to the
amount of data memory available in the DSP and the
number of ADC channels selected. The number of
samples selected should not exceed 16000/N where N is
the number of ADC channels. Figure 5 shows the
AD73x60 options window.
Figure 5. The AD73x60 Options Window
1 _{Recompiling DSP source code requires the ADSP21xx assembler and linker}
tools.
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