Note that we do not have an illustrative example as you asked for. If you have any additional questions or need any further information, please contact me again. If you are getting your DEM's elsewhere, I would suggest contacting the maker of the DEM and confirming with them that their units are meters.
Lets assume they are meters.
Basically, WMS was made to work with UGSG DEM's and will not have any problems with conversions because it was designed with the assumption that the DEM would have values in meters. That is true. We don't have an example for you to see this. The help menu does have information about filtering and smoothing. Neither the weight concept I suggest that you consult the help menu for information on this as well.