Deepace KC908 Manual page 30

3.Measurement mode introduction
This part will introduce the measurement mode and the basic
measurement logic of KC908. To know the difference between modes and
choose one to get right result.
The KC908 can only operate in one of these modes, except in certain
special cases. The MODE key is for mode selection, and the mode selection
menu is displayed after the key is pressed. The mode selection menu is only
displayed when the MODE key is pressed.
In different configurations and versions, different modes are available.
Three modes, spectrum, receiver and signal source modes are included by
default.