i was able to find an example for the DT9857E, running that program with the DT9834 creates an error when it attempts to add the tachometer channel, so i removed that piece of the code (which got me past the initialize stage of the device). then i get another error later on in the code when it tries to run the AnalogInputSubsystem.Config() method. the error being thrown is OpenLayers.Base.OlException: 'An invalid channel was specified. '
picture of the error attached