View the curve marker by clicking on the status bar or opening the Save window.

The curve marker can be activated in the following ways: when <f>, <single> or <i/o> are enabled and when <go> is disabled (no measurement is running).

Use the curve marker to scan the curves for specific information.

1. Select measured curves in the Marker window: select a single curve in the marker 1 field and a second curve in the marker 2 field.
2. Use the slider to move the cross lines in the background. The cross lines show the selected frequency in the frequency axis and the output level or gain in the output level or gain axis. The adjusted values are shown in the window.
3. Curves measured with a pure tone also displays several other levels (harmonics and distortion). When both markers are enabled, the difference between marker position 1 and 2 is calculated and displayed.