Patent ID: 7928981

Claim:
A signal generator having output channels and a screen that selectively displays parameter edit screen layers of different combinations of characters and waveforms for selected output channels comprising a selectable screen layer indicator for each parameter edit screen layer with at least one screen layer indicator for one of the parameter edit screen layers having a waveform indicator displayed on the screen layer indicator representing a shape of a waveform signal output from that output channel, and another waveform indicator displayed on the screen layer indicator representing a shape of a waveform signal output from another output channel, and another screen layer indicator for another parameter edit screen layer having a character indicator displayed on the screen layer indicator representing one of the output channels and a waveform indicator displayed on the screen layer indicator representing a shape of a waveform signal output from the represented output channel of the character indicator wherein the selectable screen layer indicators are displayed at the same time to show the existence of the corresponding parameter edit screen layers and indicate the respective different combinations of character indicators and waveform indicators.