Compliance

Hardware version

CANBench Duo v1.2 — Schematic-stage refresh of the V1.1 fabricated prototype. V1.2 is electrically identical to V1.1 and carries the InvenTree-canonical component metadata; no V1.2 boards exist yet — testing and bring-up reference the V1.1 hardware.

Other versions: v1.1 — fabricated prototype (current)

Status: no formal certification yet

The CANBench Duo V1.1 fabricated prototype carries CE, UKCA, and RoHS marks on the PCB silkscreen as a forward-looking conformity claim. Formal Declaration of Conformity, EMC test report, and component-level lead-free verification are pending the V1.3 production release. Neither the V1.1 prototype nor the V1.2 schematic is a certified product.

Overview

This page covers the regulatory and conformity status of the CANBench Duo V1.2 (electrically identical to the V1.1 fabricated prototype). The CANBench Duo is a passive bench measurement instrument, not a marine-deployed product — it carries no NMEA 2000 or other marine compliance claim. The M12 connector form factor and J10 pinout are N2K-compatible for bench interfacing only; the instrument itself is not N2K-certified.

The fabricated V1.1 prototype carries CE, UKCA, and RoHS marks on its silkscreen as a forward-looking conformity claim. Formal certification — Declaration of Conformity, accredited EMC test report, and component-level lead-free verification — is pending the V1.3 production release. The sections below summarise the current per-directive status, the engineering artefacts already in place, what remains pending, the prototype-scope limitations, and the ISO 7637-2 (vehicle transient) scope, which does not apply to this instrument.

Current status

Directive / standard	V1.1 / V1.2 status
EU Directive 2014/30/EU — EMC	Mark present on silkscreen; formal compliance assessment pending
EU Directive 2014/35/EU — LVD	Not applicable (≤ 48 V DC operation, below LVD threshold)
EU Directives 2011/65/EU + 2015/863/EU — RoHS	Mark present; all V1.2 BOM components carry "ROHS" suffix in InvenTree
EU Directive 765/2008/EC — CE marking rules	Mark present at 3.5 mm letter height (below 5 mm minimum — known V1.3 fix)
UK Statutory Instrument 696/2008 — UKCA	Mark present at 3.5 mm letter height (same V1.3 fix)
ISO 7637-2 — Vehicle transient testing	Not applicable. CANBench Duo is a passive bench measurement instrument; the protection chain handles ESD and bench-handling transients only
CISPR 25 — Vehicle conducted-emissions measurement band	Topology supports 150 kHz – 108 MHz measurement; full S21 / return-loss VNA verification pending
NMEA 2000 — Marine networking standard	Not certified. The M12 connector form factor and J10 pinout are N2K-compatible; the instrument itself is not N2K-certified

What is in place

Several pieces of the conformity assessment exist as engineering artefacts:

• Bill-of-materials lead-free status — every component on the V1.2 BOM has a ROHS suffix in its InvenTree record. The China-RoHS EFUP variant of the silkscreen mark is used (SILKS:EFUP_RoHS_China_4), which is acceptable for both EU and China markets when the BOM is lead-free.
• Schema-review evidence — all six circuits have been schema-reviewed with kicad-cli BOM and netlist as canonical sources; topology is fully documented.
• PCB-layout review evidence — placement, ground continuity, mirror symmetry, cross-sheet loop-area measurements are documented in the pcb_review/ evidence files.
• Performance-review evidence — component-level operating points calculated against datasheet ratings; thermal envelopes, current ratings, and CMRR bounds are documented in the performance_review/ evidence files.
• Design-intent narrative — each circuit's design-intent file captures the engineering rationale behind the topology choices.

What is pending

For V1.3 to be a certifiable release, the following needs to be in place — listed in approximate execution order:

1. EMC compliance testing at an accredited lab. Conducted-emissions and radiated-emissions sweeps against the applicable harmonised standards under CE EMC Directive 2014/30/EU. Output: EMC test report.
2. Declaration of Conformity (DoC). A signed document, kept on file by SCADYS as the responsible economic operator, declaring conformity against the applicable directives and standards. References the EMC test report.
3. UKCA conformity assessment. Post-Brexit equivalent of the CE assessment; same underlying technical work but a separate document trail.
4. CE / UKCA silkscreen mark upsize from 3.5 mm to ≥ 5 mm letter height per the directive's minimum-height requirement. V1.3 silkscreen update.
5. Silkscreen layer migration (F.SilkS → B.SilkS) so the regulatory marks face the user side of the assembled enclosure alongside the laser-etched operational labels. V1.3 layout candidate.
6. QR-code URL correction — the V1.1 silkscreen carries docs.scadys.com/mdd400, a clone-leftover from the project's origin as an MDD400 fork. V1.2 schematic correction is in place; V1.3 fabrication will be correct.

V1.1 prototype scope

The V1.1 fabricated prototype is a prototype, not a released product. It is used for internal engineering validation and pre-compliance measurement-band characterisation. The CE / UKCA marks on its silkscreen are a forward-looking claim that the design topology supports the relevant directives; they are not a representation that the prototype has been formally assessed against those directives.

Anyone using a V1.1 prototype is expected to treat it as engineering hardware. It is not to be placed on the EU or UK markets until the V1.3 release with the formal conformity assessment complete.

ISO 7637-2 scope clarification

The CANBench Duo is not designed for ISO 7637-2 transient testing. ISO 7637-2 Pulse 5a / 5b (load dump, 100+ V sustained transients) would exceed the protection FET voltage ratings (the V1.2 design margin is sized for ~ 100 V transients). The protection chain handles ESD events and bench-handling transients (e.g. accidentally shorting the supply, hot-plugging a DUT), not vehicle-loaddump-class energy.

If load-dump transient testing is required for a DUT, use a dedicated transient generator upstream of the CANBench Duo, with the LISN's RF measurement ports terminated into 50 Ω during the transient injection.

Related pages

• PCB Markings & Compliance — the silkscreen marks themselves and known V1.1 silkscreen issues
• Housing — the enclosure-level chassis-bonding strategy contributing to the overall EMC behaviour
• Tasks — V1.3 compliance-related fixes are tracked here

References

• EU Directive 765/2008/EC — CE marking rules
• EU Directive 2014/30/EU — Electromagnetic compatibility
• EU Directive 2014/35/EU — Low Voltage Directive
• EU Directives 2011/65/EU and 2015/863/EU — RoHS
• UK Statutory Instrument 696/2008 — UKCA
• IEC, CISPR 25: Vehicles, boats and internal combustion engines — Radio disturbance characteristics
• ISO 7637-2 — Road vehicles — Electrical disturbances from conduction and coupling — Part 2: Transient conduction (NOT applicable to this product)
• IEC 61000-4-2 — Electrostatic discharge immunity test
• NMEA 2000 — Marine networking standard (connector form factor only — instrument is not N2K-certified)