To use the new Turntable-Mode in X3DOM you have to set the type-Parameter of the NavigationInfo-Node to turntable.
<NavigationInfo type= 'turntable' ></NavigationInfo>
With the third and fourth value of the typeParams-Parameter you can set the minimal and maximal vertical rotation angle.
Accepted values are between 0 and PI, starting from +Y (0) down to -Y (PI).
<NavigationInfo type= 'turntable' typeParams= '0.0 0.0 0.2 1.4' ></NavigationInfo>