Amtune Signal Chain for Pharmaceutical Cleanrooms

A pharmaceutical plant buys AV for four reasons: batch records and work instructions on the line, status dashboards that show whether a filling line is running or blocked, training and briefing rooms outside the classified area, and paging that reaches corridors and airlocks. None of it is glamorous, and all of it sits next to a quality system that treats every screen as a potential record. The first design rule is therefore a boundary: AV displays information, it does not hold it.

The room sets the constraints. In an ISO 7 or ISO 8 area, cable penetrations are sealed and documented, so a new screen is a construction activity rather than a service call. Displays need flat, cleanable front surfaces and no fan-cooled enclosures pulling room air through a filter they were never designed for. Wireless presentation is usually excluded, which means the wired input at the table has to work first time, every time. Power arrives from the essential supply, and the electronics have to tolerate the EMI of motors, chillers and filling equipment without a shielded-room budget.

The data boundary is the part that gets argued about. If a screen shows batch or MES data it is a mirror of a system of record: read-only, no local storage, no screenshot export, session timeouts, and a source identifier on the display so an auditor can tell which system produced the number. Anything that could become part of a batch record needs the QA and IT owners in the room, not the AV integrator alone. Change control applies too - a firmware update in a GMP area is a change, and the version register should list every endpoint, its firmware and the date it moved.

What remains for the signal chain is conventional work done precisely. A matrix with EDID locked per output, so a line display never transmits a resolution it cannot show. HDBaseT for the last hundred metres, because the cable route is fixed at construction. Decoders where a training room has to overflow into a second space. Dante or AES67 paging zones with explicit priority against the fire alarm. No direct internet access on any endpoint, and remote diagnostics that answer the question without anyone gowning up. Amtune supplies that layer - the routing, extension, AES67 audio modules and Dante modules that should be boring, documented and identical on every line.