> For the complete documentation index, see [llms.txt](https://help.movin3d.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.movin3d.com/movin-tracin-stage/setup/calibration.md).

# Stage 1 · Calibration

Calibration combines every LiDAR view into one 3D scene. Run it after the first installation, whenever a sensor moves, or when walls and floors look doubled or misaligned.

Before starting, clear the stage, power and connect every sensor, and have the calibration wand ready.

## Connect sensors

<figure><img src="/files/jUYRuvXJDMCwkszcqHe0" alt="Stage 1 screen before connecting sensors"><figcaption><p>1 Either highlighted Connect sensors button starts the same connection flow.</p></figcaption></figure>

Select either highlighted **Connect sensors** button.

<figure><img src="/files/UEzzwaTwwhxtv4VQ4x7p" alt="Stage 1 screen after sensors are connected"><figcaption><p>1 Either highlighted Calibrate sensors button opens the same calibration screen.</p></figcaption></figure>

After the sensors connect, select either highlighted **Calibrate sensors** button. The center and lower-right buttons perform the same action.

<figure><img src="/files/5ZD0cJMDeXYVb32UJ38K" alt="Calibrate sensors screen"><figcaption><p>1 Select Calibrate to open the calibration wizard.</p></figcaption></figure>

Select the highlighted **Calibrate** button to start calibration.

{% hint style="info" %}
Calibration is locked while the pipeline is running. Stop the pipeline to edit it; output remains off until you go live again.
{% endhint %}

## 1 · Setup

<figure><img src="/files/MPAKAlPxXbw6vgs1qCXb" alt="Setup with sensor status and calibration wand selection highlighted"><figcaption><p>1 Check sensor status. 2 Choose the calibration wand.</p></figcaption></figure>

1. Confirm **PTP sync**, **Connected**, and **Live data** are green for every sensor. The **Reference** sensor is selected automatically.
2. Choose **Regular** (15 cm ball) or **Big** (20 cm ball).

{% hint style="warning" %}
Two or more sensors require PTP synchronization. If a stream does not start, check power and cabling and use **Try again**.
{% endhint %}

## 2 · First calibration

<figure><img src="/files/aIyc48gsoEIlKmWYjwf9" alt="First calibration sensor collection progress highlighted"><figcaption><p>1 Check each sensor's collection progress.</p></figcaption></figure>

Select **Start collection**, then move the wand slowly around the whole stage and vary its height from near the floor to overhead. Collection stops automatically when every non-reference sensor has enough data; check each sensor under **Collection progress**.

<figure><img src="/files/3TWrIbA4PoKtzNX9P0FT" alt="Completed collection progress and first calibration result review highlighted"><figcaption><p>1 Confirm that every sensor is ready. 2 Review each sensor's result.</p></figcaption></figure>

1. Confirm that every non-reference sensor is ready under **Collection progress**.
2. Check **Result review**. A **Pass** is enough to continue; collect again if a sensor fails.

Select **Confirm first calibration** to keep the rough alignment and continue to Refine calibration. No separate Next click is required.

## 3 · Refine calibration

<figure><img src="/files/3zVOBm7RLGMixi27iuII" alt="Refine calibration sensor progress and wand trajectories highlighted"><figcaption><p>1 Check each sensor's progress. 2 Cover the full working volume with wand trajectories.</p></figcaption></figure>

Select **Start capture**, then:

1. Move the wand side to side, front to back, and low to high. Check that each sensor's progress increases.
2. Use the viewport to confirm that the wand trajectories cover the full working volume rather than one small area.

When every sensor reaches the target and **Enough data — press Stop when ready** appears, select **Stop capture**. Then select **Refine calibration** to fit the accepted trajectories. Stopping capture alone does not calculate the refined calibration.

<figure><img src="/files/Jjv3pWSjYekukbSrLy6s" alt="Refine calibration complete"><figcaption><p>A completed refinement is ready for axis selection.</p></figcaption></figure>

When **Refinement** shows **Complete**, select **Next · Select axis**. If more coverage is needed, select **Capture more**, collect the extra trajectories, select **Stop capture**, and then select **Refine again**. **Reset all** discards the trajectories and refinement result and restarts this step.

## 4 · Select axis

Set three points in order: **Origin**, **Right**, and **Forward**. Stand on the stage facing the audience; **Right** is your right, and **Forward** points toward the audience or stage front.

<figure><img src="/files/XPdES3ZHrtg3aW2tEboO" alt="Select Axis origin instructions"><figcaption><p>The diagram shows where to place O, R, and F.</p></figcaption></figure>

For each point, select **Start capture**, place the wand at the requested spot, step away, and confirm **Placed — start capture**. Hold the wand still until the candidate list appears.

<figure><img src="/files/hnUALc4QCKjoj1WOyL07" alt="Axis position candidates"><figcaption><p>The best candidate is preselected; verify it against the real wand position.</p></figcaption></figure>

Choose the marker that matches the wand's real position, then continue to the next point. Repeat for **Right** and **Forward**, then select **Next · World alignment**.

## 5 · World alignment

<figure><img src="/files/DWdhlXnPhyuDaLb0icyj" alt="World alignment in Top, Front, Side, and 3D views"><figcaption><p>Verify the shared frame and floor from all four views.</p></figcaption></figure>

**World solve** starts automatically. When **Auto align** shows **Complete**, check the Top, Front, Side, and 3D views. Use **Fast refine** with a clear floor to correct small tilt or height errors, then confirm.

## 6 · Save

<figure><img src="/files/8vtCBfIAtErb7McL5Qh8" alt="Save calibration with a timestamped filename"><figcaption><p>The saved result becomes the default for the next pipeline start.</p></figcaption></figure>

Keep the suggested filename or enter a new one, then select **Save**. **Discard & exit** removes all unsaved work from this wizard session.

Continue to [Stage 2 · Settings](/movin-tracin-stage/setup/live-settings.md).


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