Yaesu FTDX101D Operation Manual page 39

Press the [S.MENU] key and the "SCOPE MENU" screen will be displayed, so touch the desired item.
Setting Scope Sweep Speed.
SPEED
Adjust the Peak Signal Color Density.
PEAK
Marker display ON or OFF.
MARKER
Changing scope display color.
COLOR
Adjust the reference level to make it easier to distinguish be-
LEVEL
tween target signal and noise.
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