Query the instrument identity (*IDN?) to verify the connection.

Returns manufacturer, model, serial number, and firmware version. Use this first to confirm the scope is reachable.

Get an overview of the scope's current state: trigger status, sample rate, memory depth, timebase, and per-channel settings.

Control acquisition state.

• run: start continuous acquisition (:RUN)

• stop: stop acquisition (:STOP) — required before reading deep memory

• single: arm a single-shot acquisition (:SINGle)

• autoset: auto-configure vertical/horizontal/trigger for the applied signal

• clear: clear all waveforms on screen (:CLEar)

• force_trigger: force a trigger event (:TFORce)

Configure an analog channel. Only the parameters you pass are changed; the tool returns the channel's resulting settings.

Set the main horizontal timebase scale and/or offset.

Configure edge triggering (source, slope, level, sweep mode). Sets trigger mode to EDGE, then applies only the parameters given.

Set acquisition memory depth, mode, and average count.

Perform an automatic measurement on a channel and return its value.

Common items: VPP (peak-to-peak), VAVG, VRMS, VMAX, VMIN, FREQuency, PERiod, RTIMe (rise time), FTIMe (fall time), PDUTy (duty cycle). Values are in SI units (V, s, Hz). A value near 9.9e37 means the measurement is invalid for the current signal.

Capture waveform data from a channel, scaled to volts and seconds.

Returns summary statistics (vmin/vmax/vpp/vavg/vrms) plus decimated time/voltage arrays. In 'memory' mode the scope must be stopped first (use run_control 'stop'); the full memory depth is read and decimated.

Capture the scope's current display as a PNG image.

Useful for visually inspecting waveforms, menus, and measurement readouts exactly as shown on the instrument's screen.

Send an arbitrary SCPI command from the DHO800/900 programming guide.

Commands ending in '?' are treated as queries and their response is returned; others are write-only. Use for anything not covered by the dedicated tools (cursors, math, decoding, mask tests, DVM, etc.).