Real Hardware Integration
=========================

This page describes how to implement real instrument interfaces.

Backends
--------

Interfaces expected:
- Serial-based DUT communication
- SCPI commands over USB or LAN
- Future support for Modbus, I2C, or CAN (if needed)

Adding a Real DUT
------------------

1. Create a `RealDUT` class in `src/instruments/dut_controller.py`
2. Match the interface used in `SimDUT`
3. Uncomment the fixture in `conftest.py` to enable

   .. code-block:: python

      # return RealDUT(port="/dev/ttyUSB0")

Safety Tips
-----------

- Use proper delays when enabling outputs
- Confirm settings before triggering loads
- Log all commands during development