Imports Ivi.Visa
...some code...
mb.FormattedIO.WriteLine("DATA:SOUR CH1")
mb.FormattedIO.WriteLine("DAT:ENC RIB")
mb.FormattedIO.WriteLine("DATA:WIDTH 2")
Dim rawData As Short() = mb.FormattedIO.ReadLineBinaryBlockOfInt16()

runs fine, but

mb.FormattedIO.WriteLine("DATA:SOUR MATH1")
mb.FormattedIO.WriteLine("DAT:ENC SFP")
mb.FormattedIO.WriteLine("DATA:WIDTH 8")
Dim rawData = mb.FormattedIO.ReadLineBinaryBlockOfdouble()

gives me a list of very small numbers (3.14299860601909E-319).
I took the SCPI commands from the trace of TekScope Utility.

The TekScope Utility gets the right values, what am I doing wrong?
How does TekScope do this?

Regards