Simulator of spectral peak response for Red Pitaya

The App lets you use the device as a test unit for the development and fine-tuning of controls systems and acquisition systems. It can be configured to receive a control signal on an input port (ex. in2 or in2) and give a response on an output por (ex. out1 or out2). The simulated signal is a lorentizian Peak.

The features of the App

• Implementation of Low Pass Filter and High Pass Filter for the input control signal
• The shape of the peak can be controlled with several parameters:
  • Position: Value of the control signal where the peak is centered at.
  • Height of peak . Negative value is a negative peak.
  • Width / Finesse of the Peak
  • Baseline slope: a linear base line where the peak is mounted on.
• You can add white gaussian noise to the response signal, with variable amplitude
• You can simulate a slow drift of the peak position

Operation

There are two ways of operation:

Internal visualization

Any time, in any moment, you can watch the configured peak signal by choosing the chanels on the Scope:

• OscA: Simulated Ramp
• OscB: Simulated Output

Then you can choose the best parameters for your model without external scanning.

External scanning

Connect the other device you want to test for acquisition and control.

• Control Input: Choose the input signal for the control voltage. ex.: in1.    Probably you would want to configure a Ramp-scan on this port.
• Assign Output wire to one of the Out1/Out2 ports.
• OscA: Choose Input Signal
• OscB: Choose Output

Now, operate the device you want to test. You can see on the Oscilloscope all the time the voltage signal the device is sending to the simulator and the response of the system.

Download and install

You can download the compiled version from: dummy_simulator-0.1.0-1-devbuild.tar.gz

Upload App to Red Pitaya device. UnZip / UnTar the App folder. Execute from terminal (on GNU/Linux):

./upload_app.sh rp-XXXXXX.local

Replace rp-XXXXXX.local by your RP localname or IP address

Also, you can use your own SSH client and upload the lock_in+pid_harmonic folder the the RedPiaya folder: /opt/redpitaya/www/apps