Adds an output underflow count channel to a section in an asynchronous custom device. Output underflow count channels track the number of times the system fails to read data from an asynchronous custom device because there is no data to read. A custom device can have only one output underflow count channel.

Public Function AddOutputUnderflowCountChannel ( _
	name As String _
) As CustomDeviceChannel

public CustomDeviceChannel AddOutputUnderflowCountChannel(
	string name
)

public:
CustomDeviceChannel^ AddOutputUnderflowCountChannel(
	String^ name
)