Quality and verification

What we verify, and how

Shielding effectiveness is measured on the assembled enclosure, not calculated from the sheet material. Because a shield box leaks at seams, doors, and feed-throughs rather than through the wall, the measurement has to happen on the finished unit with the interfaces installed.

Isolation between cavities — particularly on dual-level and dual-position stations — is verified separately, because two cavities in one housing can couple through the shared chassis if the partitioning is not designed for it.

RF components

Attenuators, switches, and filters are characterised for insertion loss, VSWR, and isolation across the specified band, with the measurement conditions stated alongside the figures. Where a datasheet carries an open point — an endpoint loss figure, a low-frequency boundary, a switching-time test method — we state it as an open point rather than filling it in.

Component part numbers are checked against the customer specification at quotation. If a datasheet part number and a catalogue name differ, the correspondence is confirmed in the technical agreement so the delivered part and the documentation match.

Fixtures and stations

Repeatability is the property that decides whether a production station is useful. Fixture geometry, drawer or lid actuation, and clamping force are all designed so that positioning does not depend on operator technique.

Cycle time, concurrent test count, USB protocol and rate, and per-path supply are confirmed against the site conditions and the test program — the published figure describes the platform capacity, not a guarantee for every device.

What is confirmed per project

The following are set against the device and the application, and appear in the quotation or technical agreement: working volume, shielding band and effectiveness, isolation, feed-through complement, fixture layout, actuation method, supply and air requirements, control protocol, and acceptance criteria.

A production screening result does not equal a certification result. Where a customer needs compliance testing, that is a separate exercise with its own instrumentation and limits.