Capture both sides of the filter
- Choose Transient · time domain in Analysis, Duration 0.04 s and 800 samples. Press Run.
- Open Oscilloscope using the wave icon in the toolbar. Drag its title bar to move it and the lower-right grip to resize. Minimize leaves a movable title bar that can sit at the bottom of the screen. Restore brings the full window back into view; Dock puts it below the schematic.
- Use the × button to close the instrument window completely. The toolbar wave icon reopens it. Closing preserves instrument settings and probe connections; a running Live simulation continues until you press Stop live.
- Click the A probe button, then click V1's + terminal or its wire to R1. The window temporarily collapses while you place a lead. Repeat with B on C1's + terminal, then REF on GND1 or the return wire. Escape cancels placement.
The input has four periods in 40 ms. The output is smaller and lags the input.
If you get stuck: The channel menus also select signals. Both channels measure their probe voltage minus the shared REF voltage. REF defaults to circuit ground. These ideal probes do not load or rewire the circuit. Probe markers follow moved parts; deleting a target displays Disconnected. Connections are saved with the project; window position is a browser preference.
Change the generator
- Open Function generator in the movable instrument window's tabs.
- Set Frequency to 200 Hz. Keep Peak amplitude at 2 V and DC offset at 0. Press Run, then return to Oscilloscope.
The input now has eight periods in 40 ms. CHANNEL A reports about 200 Hz, 4 V peak-to-peak and 1.41 V RMS.
Separate display controls from measurements
- Try 2× Display gain, AC Coupling and Trigger ↑, then restore 1× gain and DC coupling.
- Hover the chart to inspect a captured point. Hide steps or move this guide if it covers a control.
Display gain changes the plotted scale; the sidebar measurements still describe the unscaled captured signal.
If you get stuck: Single capture displays one finite window. The Run a circuit live tutorial explains continuous simulation and automatic parameter updates.
Read AC RMS and export measurements
- Open Multimeter, select the source-positive channel, AC voltage (RMS), and a ground COM reference.
- Expect about 1.413 V. Use Export all measurements as CSV in the instrument header to download the complete capture.
The meter agrees with a 2 V-peak sine: 2 / √2 ≈ 1.414 V. A CSV containing the captured channels is downloaded.
If you get stuck: AC RMS removes the mean. To measure branch current, use a source/inductor current trace, or insert a 0 V source in series as an ammeter.