External Connectors
CANBench TrueZ v1.1 — Fabricated prototype, sole built unit. V1.1 is electrically identical to the V1.2 schematic refresh but predates the InvenTree symbol-library migration; the schematic component metadata reflects legacy SCADYS naming. Testing and bench validation reference this V1.1 hardware.
Other versions: v1.2 — schematic refresh (next version)
Five external connections: two SMA inputs, two SMA outputs, one ground banana. All RF ports are 50 Ω.
| Refdes | Type | Faceplate label | Direction | Net | Role |
|---|---|---|---|---|---|
| J2 | Edge SMA, 50 Ω | LISN+ | Input | RF_LISN_LINE+ | Positive LISN line from the CANBench Duo |
| J3 | Edge SMA, 50 Ω | LISN− | Input | RF_LISN_LINE− | Negative LISN line from the CANBench Duo |
| J4 | Edge SMA, 50 Ω | CM-25Ω | Output | RF_LISN_CM | Common-mode component to the analyser |
| J5 | Edge SMA, 50 Ω | DM-100Ω | Output | RF_LISN_DM | Differential-mode component to the analyser |
| J1 | Keystone 1211 banana | — | Ground | GNDREF | Measurement ground reference |
Cabling: drive J2/J3 from the CANBench Duo's two LISN-output SMAs with two identical cables (matched length). Connect one output (J4 or J5) at a time to the analyser's 50 Ω input. The CM-25Ω / DM-100Ω impedance labels are valid only with a 50 Ω analyser input.
Faceplate layouts
The SMA ports are laser-etched on two opposite enclosure faces. The drawings below show each face as etched.
Input face — LISN line inputs (from the CANBench Duo)
Output face — CM / DM outputs (to the analyser)
For the connector design rationale and the silkscreen markings, see Circuit Design → Connectors & Markings.