Profiles and files

Profiles and files

Profiles

A profile stores the complete capture settings (channels with names and colours, sampling rate, sample counts, trigger, bursts) together with the decoder configuration. Use them for recurring setups — the C64 expansion port profile is a good example.

• Profiles in the capture dialog: save the current settings, load, export and import.
• The Profiles menu of the main window: load a profile, edit it (name, notes, capture settings, decoders) or delete it.
• Loading applies the decoders immediately; the capture settings apply to the next capture.
• Profiles of the original LogicAnalyzer 6.5 software can be imported, including its decoder tree.

Profiles live in profiles.json in the settings directory; export writes a single profile as JSON.

Capture files

Format	Read	Write	Remarks
.lac	✓	✓	identical to the original software, including regions
.lac (≤ V5)	✓	–	the packed UInt128 samples are unpacked on load
.lac.gz	✓	✓	same structure, gzip-compressed
.csv	–	✓	optionally with a time column relative to the trigger
.vcd	–	✓	for PulseView, GTKWave and other tools

Regions

Regions mark a range of samples with a name and a colour (right-click in the ruler → Create region). They are drawn behind the waveform and the annotations, are saved in the .lac file and survive a round trip through the original software.

Editing samples

The sample menu (right-click in the ruler) copies, pastes, deletes and inserts samples, and Shift channels moves single channels in time — useful to correct a probe that was connected one sample late.

Signals by hand and simulated captures

• Capture → Simulated capture… generates test signals (counter, protocol frames with UART, SPI and I²C, and more). The firmware can produce them on the board; without a device the application computes the same samples.
• The Signal Description Language builds captures from a textual description, for trying out decoders or building test cases.