- Add offline `plot-sweep` CLI command: generates efficiency overlay,
heatmap, and power loss plots from sweep CSV (no instruments needed)
- Add degauss buttons to CH5/CH6 in GUI (sends :DEMAg SCPI command)
- Gradual load ramp-down at end of 2D sweep to avoid transients
- Live sweep time estimate in GUI based on grid size × settle time
- Update HIOKI submodule to include degauss CLI command
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The worker thread was signaled to stop but never joined, causing bus
collisions when the sweep thread started talking to instruments while
the worker was still mid-query. Now:
- worker.join(timeout=10) before sweep starts
- 0.5s delay + clear supply error queue before first command
- join sweep thread before restarting worker after sweep completes
- Also join worker on disconnect
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
CP=500W at V=50V needs 10A on the load side — if the supply I_limit
is only 20A and the MPPT has conversion losses, this can cause the
supply to current-limit and timeout. The check now catches this upfront:
CP check: 500W / 50V = 10.0A (limit 20.0A) OK
Also raises ValueError if the worst-case current exceeds the limit.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Python 3.13 deletes exception variables after the except block.
Capture the error string before passing to the lambda.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- 2D sweep now supports CC (constant current) and CP (constant power)
load modes via --load-mode flag (CLI) and combobox (GUI)
- Supply capability check before all sweeps: validates max voltage
against supply range and prints V/I/P summary
- Renamed sweep-vi args from --i-start/stop/step to --l-start/stop/step
to reflect that the load setpoint can be current or power
- GUI labels update dynamically based on selected load mode
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- GUI: voltage/current range selectors for Ch5 and Ch6 with AUTO option
- Worker: queries current V/I ranges each poll cycle, pushes to GUI
- Setting a fixed range automatically disables auto-range for that channel
- Live display shows current range values below each channel's readout
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
