The Frame of Reference feature in DISPLAX Service creates a baseline snapshot of the current sensor state, at the moment the controller receives power. This reference frame is then used as a comparison point for all subsequent signal readings.
Triggering a new frame of reference should be done after configuration changes, and helps the system distinguish valid touch input from background noise, environmental changes, or residual interference. It's the same as restarting the controller, but much quicker.
You should trigger a new reference frame when:
Environmental conditions change (temperature, humidity, EMI, hardware/structure)
The sensor surface has been cleaned or modified
Hardware has been moved or reinstalled
Touch behavior becomes unstable or inconsistent
After adjusting Shield, Gain, or Threshold values
To create a new reference frame on a local device, run:
displaxservice -a 127.0.0.1 --fnref
This command records the current, idle state of the sensor and applies it immediately.
Ensure no touches or objects are present on the sensor when triggering the reference frame.
The sensor surface should be completely clear.
Any active touches during execution may impact the reference data.
This operation does not change configuration parameters; it only updates the baseline signal reference.
Always trigger a new frame after making sensitivity-related adjustments.
Combine this step with Gain, Threshold, or Shield tuning for optimal results.
Use this feature as part of regular maintenance in electrically noisy environments.
Re-trigger the frame if ghost touches or baseline drift appear.