REFERENCE ENVELOPE · FW-APC16Analog Passthrough Converter
An inline 16-bit converter that maps one instrument signal into a user-defined 0–10 V or 4–20 mA output.
Not available for sale
Work in progress. Contact Ferox Works to discuss the development direction or a related custom requirement.
Designed as working equipment.
The converter is being designed as a two-port passthrough: one locking DE-9 accepts the source instrument signal and one opposing DE-9 carries the translated output. A USB-C configuration interface defines the engineering variable, input calibration, scaling curve, output range, clamping, and fail-safe behavior. The goal is to adapt existing instruments without replacing their controls or building a one-off analog circuit for every installation.


Technical details.
Development targets only. Electrical, mechanical, firmware, safety, compliance, and performance claims remain subject to prototype validation.
- Development state
- Architecture and prototype planning
- Signal path
- One input → user-defined transform → one output
- Connectors
- 2 × locking DE-9 total · one on each opposing side
- Conversion
- 16-bit ADC + 16-bit DAC target resolution
- Input profiles
- Configurable voltage or current input scaling; ranges finalized during prototype validation
- Output modes
- Programmable 0–10 V or 4–20 mA
- Configuration
- USB-C interface for units, calibration points, transfer curve, limits, and fail-safe output
- Response target
- Sub-5 ms end-to-end update target; performance not yet validated