Trace Zoom Feature

The zoom feature is used to magnify or reduce a portion of a trace.

Two zoom modes are available:

Mode	Description
Amplitude zoom	Used to have a better view of a part of a signal. This zoom operation updates the amplitude and zero offset value. When performing an amplitude zoom, the zero offset is automatically set by the cursor position.
Time zoom	Used to expand/collapse the time-base in order to have a better view of the signal evolution through time. This zoom operation updates the time-base value.

Mode

Description

Amplitude zoom

Used to have a better view of a part of a signal.

This zoom operation updates the amplitude and zero offset value.

When performing an amplitude zoom, the zero offset is automatically set by the cursor position.

Time zoom

Used to expand/collapse the time-base in order to have a better view of the signal evolution through time.

This zoom operation updates the time-base value.

The zoom operations can be done by either:

See Setting Scale about setting the amplitude, zero offset, and time-base values.

Mouse Shortcuts

Action	Result
Scroll up the mouse wheel.	Expands the time-base value.
Scroll down the mouse wheel.	Collapses the time-base value.
Press the Ctrl key while scrolling up.	Makes the amplitude value greater.
Press the Ctrl key while scrolling down.	Makes the amplitude value smaller.