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calibrate.md

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Calibration

Input & output calibration too for EuroPi.

Required Equipment

Calibration requires the following physical setup:

  1. EuroPi must be connected to rack power
  2. For low-accuracy calibration you need either another EuroRack module or an external voltage source capable of generating precise voltages of either 5V or 10V
  3. For high-accuracy calibration you need another EuroRack module or adjustable external voltage source capable of generating precise voltages of 1.0, 2.0, 3.0, ..., 9.0, 10.0V.

Usage

Calibration is interactive with instructions displayed on-screen. These instructions are summarized below:

  1. Make sure the module is powered from your Eurorack power supply.
  2. Select input calibration mode by turning K2. Press B2 when ready a. low-accuracy with 10V input b. low-accuracy with 5V input c. high-accuracy with variable 0-10V input
  3. Disconnect all patch cables from the module. Press B1
  4. Connect your voltage source to AIN. Press B1 when instructed. a. low-accuracy with 10V input: connect 10V to AIN b. low-accuracy with 5V input: connect 5V to AIN c. high-accuracy: read the on-screen instructions and connect the specified voltages when required.
  5. Connect CV1 directly to AIN. Press B1. Wait for the module to perform the output calibration.
  6. Repeat step 5 for CV2, CV3, etc... until all CV outputs are calibrated
  7. Reboot the module when prompted. The new calibration will be applied automatically.

Calibration data is saved to /lib/calibration_values.py. DO NOT delete this file; if you delete it you will have to complete the calibration again.

After calibrating and rebooting the module it is recommended to run the Diagnostic program to verify that the inputs and outputs have been properly calibrated.