An ODB++ dataset can contain more than one named step. A viewer may open a single board while the manufacturer expects a panel, or show a panel whose repeated child board is outdated. Establish which step is authoritative for each manufacturing task before judging the dataset by its first displayed image.
The ODB++Design specification describes a structured product model with steps and layers. A valid archive therefore needs interpretation of its organization as well as inspection of the visible geometry.
Identify the intended manufacturing level
State whether the handoff requests individual-board fabrication, supplier panelization, or fabrication and assembly of a supplied panel design. Identify the named board step and any parent panel step, plus coupons or other auxiliary content that belongs to the release.
Review how repeated instances refer to their child step. Confirm the intended board revision is used throughout the panel. A correct panel outline does not establish that every repeated instance contains the current copper, drill, and component data.
Inspect hierarchy and geometry together
| Dataset element | Review question |
|---|---|
| Board step | Does its profile and circuitry match the released board? |
| Panel step | Are repeats, rails, and orientation intentional? |
| Auxiliary steps | Are coupons and tooling clearly identified? |
| Layer organization | Are manufacturing layers distinguished from reference content? |
Check dimensions and coordinates at both board and panel levels. Use asymmetric features to establish orientation. A symmetric rectangular outline can hide an unintended rotation or reflection that becomes obvious only when connector or component positions are inspected.
Verify the receiving interpretation
- Open the final dataset in an independent compatible viewer.
- Select the intended steps explicitly.
- Compare layer count, profile, holes, and representative nets.
- Review component population and side where assembly data is included.
- Record the step names the receiver should use.
Do not rename internal files or move parts of the hierarchy casually to make the archive look simpler. Regenerate through the supported exporter when possible and revalidate after any controlled transformation.
If the supplier will create its own production panel, distinguish your individual-board design from any reference panel illustration. Resolve whether the supplied panel step is mandatory or informational before work starts. Keep the agreed interpretation with the manufacturing review. Ask the receiver to identify the imported step in its review response, especially when several similarly named board revisions or auxiliary steps are present in the package.
The release-output guide addresses archive completeness; this step-selection review ensures that a complete archive is being interpreted at the correct manufacturing level.
Move from reading to a build-ready project
Use the fabrication and assembly checklists to prepare drawings, production files and test requirements.
Open the DFM checklist