QDAC2 wiring

[TheoLaudatQM]

Summary

feature/qdac_wiring adds QDAC-II (QDAC2) to qualang_tools.wirer: instrument channels, add_qdac2, qdac2_spec, DC allocation (alone or with LF-FEM / OPX+), and visualizer support.

Commits: First add QDAC2 to the Instruments → Add qdac to the wirer with specs and visualizer
Scope: ~13 files, +349 / −4 lines vs main.

What changed

Model & registry

• New instrument_id: "qdac2".
• Types: InstrumentChannelQdac2Output, InstrumentChannelQdac2DigitalInput (24 DC outs, 4 trigger ins per unit).
• Constants: NUM_QDAC2_OUTPUT_PORTS, NUM_QDAC2_DIGITAL_INPUT_PORTS.
• Instruments.add_qdac2(indices) registers all ports for each unit on available_channels.

Specs & API

• ChannelSpecQdac2 / qdac2_spec(index=..., out_port=..., trigger_in_port=...) — DC line + optional external trigger input when the line is triggered.
• Exported from qualang_tools.wirer.

Allocation

• allocate_dc_channels tries QDAC2-only masks, and extra masks when constraints combine LF-FEM ∧ QDAC2 or OPX+ ∧ QDAC2 (dual channel per gate, with digitals when triggered).

Visualizer

• QDAC2 figure: 3×8 DC grid + 4 trigger inputs; layout tuned so labels sit inside the panel.

Tests

• New test_wirer_qdac2_voltage_gates.py; updates to instrument validation and visualizer tests.

Compatibility

Additive / non-breaking for existing wirer usage.

Note

quam-builder (and similar) can map allocated QDAC2 channels into QUAM qdac_output / qdac_trigger wiring; that lives outside this repo.

Related to PR-103 on quam-builder.

Remember to:

• Update the CHANGELOG.md
• Added tests for the feature or fix

[github-actions]

Unit Test Results

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Results for commit 7bab439.

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