Oscilloscope & Analysis

de:volt’s instruments live in the Analysis panel along the bottom of the editor. The oscilloscope is free; the rest of the workbench — logic analyzer, operating point, and sweeps — is Pro.

Oscilloscope

Open the Analysis panel and stay on the Scope tab. The scope plots net voltages over time as a live trace.

• Pick channels from the channel list on the left: tick a net to plot it. Each channel shows its live voltage next to the name.
• Time window and Y-axis range dropdowns set the horizontal and vertical scale.
• Pause / Resume freezes the display while the simulation keeps running; Clear wipes the trace.

Channel limits

The number of channels you can plot at once depends on your plan:

Once you reach the limit the remaining checkboxes are disabled until you remove a channel. A differential probe counts as one channel.

The analysis workbench (Pro)

The Analysis panel has additional tabs beyond the scope. On Hobby they show an upgrade prompt; on Pro they unlock the full workbench.

Measurements and cursors

On the scope, Pro adds a measurements strip — minimum, maximum, mean, RMS, frequency, period, and duty cycle for each selected channel — and a cursor pair for reading time and value deltas off the trace. Cursors are most accurate when you pause first, then measure. You can also rename nets and add a differential probe (the difference of two nets, netA − netB).

Captures

Save the current scope view as a capture to compare against later runs. Captures are kept for the session (up to a dozen at a time) and are not saved to the cloud, but you can mark a capture to include it in a PDF project report.

Logic analyzer

The Logic tab shows selected nets as a digital timing diagram (up to 8 lanes), with per-lane high/low thresholds. Use it to read out clocks, counters, and shift-register sequences as clean digital waveforms.

Operating point

The Operating point tab takes a one-shot snapshot of the circuit’s DC state — net voltages, component currents, and power dissipation — as a table you can export to CSV.

Sweeps

The Sweeps tab runs parameter studies in the background (with progress and a cancel button) and plots the result:

• DC sweep — step a source value and plot the response.
• Temperature sweep — step temperature across a range.
• Frequency response (AC / Bode) — magnitude and phase versus frequency.
• Monte Carlo — repeat the run with component tolerances randomised to see the spread.

Each sweep result can be exported to CSV.

Signal sources

To exercise a circuit you usually need a stimulus. de:volt’s signal sources — the signal generator, pulse generator, and clock generator — produce sine, square, pulse, triangle, ramp, arbitrary, and noise waveforms to drive your inputs while you watch the scope. They are free parts; see Power & Signal Sources for their parameters.