feat(psu): add OVP, OCP, remote sense to bk 9115

[wharwood]

Summary

Adds OVP, OCP, and remote sense to the BK 9115 series of PSU. Closes INSTRO-356.

Type of change

• Bug fix (fix)
• New feature (feat)
• Breaking change (feat! / fix!)
• Refactor (refactor)
• Documentation (docs)
• Chore / tooling (chore)

Verification

========================================================== 31 passed in 14.68s ===========================================================
(instro) william@williams-Apple-MacBook-Pro instro % uv run pytest tests/psu/bk/test_bk_9115_hardware.py -m hardware -v
========================================================== test session starts ===========================================================
platform darwin -- Python 3.12.12, pytest-8.4.2, pluggy-1.6.0 -- /Users/william/Projects/instro/.venv/bin/python
cachedir: .pytest_cache
rootdir: /Users/william/Projects/instro
configfile: pyproject.toml
collected 33 items

tests/psu/bk/test_bk_9115_hardware.py::test_set_voltage PASSED [ 3%]
tests/psu/bk/test_bk_9115_hardware.py::test_set_voltage_raises_after_instrument_error PASSED [ 6%]
tests/psu/bk/test_bk_9115_hardware.py::test_set_voltage_invalid_channel_raises_without_instrument_error PASSED [ 9%]
tests/psu/bk/test_bk_9115_hardware.py::test_get_voltage PASSED [ 12%]
tests/psu/bk/test_bk_9115_hardware.py::test_get_voltage_raises_after_instrument_error PASSED [ 15%]
tests/psu/bk/test_bk_9115_hardware.py::test_get_voltage_invalid_channel_raises_without_instrument_error PASSED [ 18%]
tests/psu/bk/test_bk_9115_hardware.py::test_set_current_limit PASSED [ 21%]
tests/psu/bk/test_bk_9115_hardware.py::test_set_current_limit_raises_after_instrument_error PASSED [ 24%]
tests/psu/bk/test_bk_9115_hardware.py::test_get_current PASSED [ 27%]
tests/psu/bk/test_bk_9115_hardware.py::test_get_current_raises_after_instrument_error PASSED [ 30%]
tests/psu/bk/test_bk_9115_hardware.py::test_output_enable PASSED [ 33%]
tests/psu/bk/test_bk_9115_hardware.py::test_output_enable_raises_after_instrument_error PASSED [ 36%]
tests/psu/bk/test_bk_9115_hardware.py::test_output_disable_readback PASSED [ 39%]
tests/psu/bk/test_bk_9115_hardware.py::test_get_output_status_raises_after_instrument_error PASSED [ 42%]
tests/psu/bk/test_bk_9115_hardware.py::test_set_overvoltage_protection_level PASSED [ 45%]
tests/psu/bk/test_bk_9115_hardware.py::test_set_overvoltage_protection_level_raises_after_instrument_error PASSED [ 48%]
tests/psu/bk/test_bk_9115_hardware.py::test_get_overvoltage_protection_level PASSED [ 51%]
tests/psu/bk/test_bk_9115_hardware.py::test_get_overvoltage_protection_level_raises_after_instrument_error PASSED [ 54%]
tests/psu/bk/test_bk_9115_hardware.py::test_set_overvoltage_protection_enabled PASSED [ 57%]
tests/psu/bk/test_bk_9115_hardware.py::test_set_overvoltage_protection_enabled_raises_after_instrument_error PASSED [ 60%]
tests/psu/bk/test_bk_9115_hardware.py::test_get_overvoltage_protection_enabled PASSED [ 63%]
tests/psu/bk/test_bk_9115_hardware.py::test_get_overvoltage_protection_enabled_raises_after_instrument_error PASSED [ 66%]
tests/psu/bk/test_bk_9115_hardware.py::test_set_overvoltage_protection_delay PASSED [ 69%]
tests/psu/bk/test_bk_9115_hardware.py::test_set_overvoltage_protection_delay_raises_after_instrument_error PASSED [ 72%]
tests/psu/bk/test_bk_9115_hardware.py::test_get_overvoltage_protection_delay PASSED [ 75%]
tests/psu/bk/test_bk_9115_hardware.py::test_get_overvoltage_protection_delay_raises_after_instrument_error PASSED [ 78%]
tests/psu/bk/test_bk_9115_hardware.py::test_set_overcurrent_protection_level_unsupported PASSED [ 81%]
tests/psu/bk/test_bk_9115_hardware.py::test_get_overcurrent_protection_level_unsupported PASSED [ 84%]
tests/psu/bk/test_bk_9115_hardware.py::test_set_overcurrent_protection_enabled_unsupported PASSED [ 87%]
tests/psu/bk/test_bk_9115_hardware.py::test_get_overcurrent_protection_enabled_unsupported PASSED [ 90%]
tests/psu/bk/test_bk_9115_hardware.py::test_set_remote_sense_enabled_unsupported PASSED [ 93%]
tests/psu/bk/test_bk_9115_hardware.py::test_get_remote_sense_enabled_unsupported PASSED [ 96%]
tests/psu/bk/test_bk_9115_hardware.py::test_check_errors_raises_after_instrument_error PASSED [100%]

========================================================== 33 passed in 15.06s ===========================================================

Tests

• Unit tests added or updated
• Existing tests cover this change
• No tests — explain why:

Checklist

• PR title follows Conventional Commits (e.g. feat(driver): add support for Keysight E36300)
• I have read CONTRIBUTING.md
• Documentation updated if user-facing behavior changed
• Code follows the style/conventions of the surrounding code