Bench record / observed, repeated, explained
Calibration should answer a narrow question: can the scanner reproduce its known camera geometry under the present installation conditions? A controlled sequence keeps exposure, cables, room lights, and target placement from becoming one tangled fault search.
This guide follows the order used for a first desktop installation. Exact poses, distances, target orientation, and software commands come from the purchased modelâs on-screen guide and current manual. The operator should never substitute a pose shown for another model.
Freeze the setup
Begin with the computer and bench acceptance test complete. Leave the scanner in the tested port, keep the selected lighting state, and stop equipment that moved the bench. Record the software version and scanner serial in the calibration log.
Allow any manufacturer-required warm-up period. If the manual gives no warm-up instruction, avoid inventing one; launch the device and proceed through its official workflow. Calibration records should distinguish a required procedure from a local habit.
Remove the reference part and loose markers from the capture area. Calibration needs the supplied artifact and its approved mount. Extra objects can obstruct the target or encourage the software to capture the wrong features.
Inspect the calibration artifact
Confirm that the target belongs to the scanner. Artecâs Micro instructions require the serial selected in software to match the number on both the scanner and calibration panel. Other systems may use a target file, QR code, size, or serial-specific board. The model manual defines the pairing method.
Inspect the active face under diffuse light. Dust, fingerprints, scratches, bent corners, and damaged dots deserve attention. Use only the cleaning method approved by the manufacturer. Leave polish, spray, pens, and heavy pressure away from the board.
Remove the protective cover only when the instructions say to do so. Place the cover where it cannot fall on the target. After calibration, the artifact should return to its case rather than remain as a convenient work mat.
Remove direct light from the target
Set the board in its first instructed position and view it through the scanner preview. A moving highlight or washed-out area indicates a light problem. Close the blind, redirect the task lamp, or use the previously documented room-light state.
EinScan links many calibration failures to direct sunlight or lamp reflections from the board and suggests removing those sources or using a darker room. That advice should be applied before changing unrelated computer settings. Room lighting should follow the makerâs procedure and provide a clean target image.
Keep the operatorâs shadow from moving across the board between poses. A fixed position beside the stand helps. For a handheld calibration, plan the arm movement before capture begins so the cable does not pull against the scanner.
Follow the pose sequence exactly
Open the correct calibration command and read the entire first prompt. Verify target side, orientation, mount position, and scanner position. Some dot patterns are asymmetrical, so a board that appears square can still be reversed.
Move to each prompted pose smoothly. Stop at the indicated distance or overlay, hold the scanner and target steady, and wait for the software to accept the frame. Do not anticipate the next pose. EinScan advises matching both board and scanner positions to the on-screen step and moving a handheld scanner at a continuous moderate speed rather than too quickly.
For an automatic desktop scanner, make sure the board is seated on the correct spacers or fixture before starting motion. Artecâs Micro sequence mounts its calibration panel on specified spacers and lets the machine capture several positions automatically. That detail applies to that mechanism; another desktop unit may call for manual board positions.
Read feedback as evidence
During capture, watch which pose is rejected. Record the prompt or error text before dismissing it. A photo of the screen can preserve details, provided no license key or private account information is exposed.
A single rejected pose may point to target orientation, distance, glare, or motion. Failure at every pose suggests a broader problem such as the wrong calibration profile, camera feed, or board. The pattern matters more than the number of attempts.
If the software offers a quality value, save it with its label and units exactly as displayed. Keep it separate from claims about accuracy. Calibration residuals, device accuracy, repeatability, and the error of a completed mesh describe different quantities.
Use a fault ladder after a failure
Return the target to the first pose and make one controlled correction at a time:
- Confirm target identity, face, and orientation.
- Restore the documented scanner and board positions.
- Remove a direct reflection or unstable light source.
- Confirm the scanner remains on the tested data port.
- Restart the calibration command after the applicationâs prescribed reset.
- Try another documented USB 3 port if live calibration video is unreliable.
- Update the relevant driver or scanner software only after recording the current versions.
EinScanâs support sequence follows the same diagnostic themes: correct positions, controlled direct light, another USB 3 port, current drivers, and moderate movement. The order prevents several variables from changing at once.
A damaged board should be removed from service. A defect in a reference artifact compromises the meaning of a successful message. Record the damage and follow the manufacturerâs replacement process.
Verify the success outside the calibration screen
A green completion message proves that the calibration routine accepted its observations. The next check is a scan of the chosen reference part under the same installation conditions.
Return the board to its cover and storage position. Mount the rigid matte reference part, select the recommended first-scan mode, and capture a short complete pass. Keep all cleanup options conservative. Save the raw project before fusing or filling holes.
Inspect tracking continuity, duplicate surfaces, steps along aligned regions, and obvious scale faults. Then measure the agreed reference dimensions using the scanner software or downstream inspection tool. The dimensions and instrument readings belong in the scan record; they are covered in the separate verification workflow.
Decide when recalibration is justified
The model manual should define routine and event-based calibration. Artecâs Micro documentation recommends recalibration after the machine is moved or after a long period unused. Other manufacturers may list transport, temperature change, failed verification, or a software prompt.
A shop can add a reference-part check at the beginning of a session without automatically running calibration. If the stable artifact reproduces the established baseline, unnecessary adjustment adds no information. If it departs from the baseline, the operator first checks mounting, exposure, and processing settings, then follows the manufacturerâs recalibration rule.
Close the calibration record
The finished record should contain the date, operator, device and target identifiers, software version, lighting state, relevant temperature if the manufacturer calls for it, calibration result, displayed quality value, rejected-pose notes, and reference scan project name.
Save the original calibration log or screenshot beside the raw reference scan. A later operator can then answer whether a change followed transport, a new software version, a different target, or a new room arrangement. That trace turns first calibration from a one-time ritual into a controlled starting point for measured scanning.