Tasks
Hardware version
CANBench TrueZ 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)
Outstanding validation and clean-up work for the CANBench TrueZ, derived from the schematic / PCB / performance review evidence.
Validation (measurement)
| Task | Why |
|---|---|
| Golden-prototype VNA / tracking-generator sweep | Replace the simulated correction curve with measured CM and DM transfer + cross-mode leakage across 150 kHz – 108 MHz. This is the headline outstanding item — the low-end correction is currently modelled, not measured. |
| Confirm CPWG Z₀ | The RF traces target ≈ 50 Ω (1.0 mm trace / 0.2 mm gap on 1.6 mm FR-4, design estimate ≈ 50–52 Ω). Confirm with a field solver or TDR. |
| Confirm cross-mode isolation | Measure the CM↔DM isolation against the transformer-balance floor (0.5 dB amplitude, 2° phase typ). |
Marking / artwork (before next fabrication)
| Task | Detail |
|---|---|
| Reconcile PCB version / variant strings | The PCB part number (0C-1.1 … GRN), the S1 silk stamp (0C-1.2-SMA), and the SKU comment (…-BLK-A) disagree — settle one version/variant before production artwork. |
| Fix the QR-code domain | Silk QR reads docs.scadys.com; the live domain is docs.scadys.io. |
| Resolve the S1/S6 silk courtyard overlap | DRC flags the PCB-version and Copyright marking footprints overlapping at one point (cosmetic). |
| Update the PCB title block | The .kicad_pcb title block still reads "CANBus LISN and CM Monitor" (CANBench-Duo clone title); update to "CANBench TrueZ CM/DM Noise Splitter" to match the schematic. |
Notes
- DRC on the V1.1 board is otherwise clean (0 unconnected, 0 schematic-parity); the single violation is the cosmetic silk overlap above.
- TrueZ is fully passive — no firmware, no power-rail or thermal validation applies.