Hints to MCA-527 Oscilloscope The MCA-527 Oscilloscope requires at least firmware version 11.16.It may be therefore necessary to update the MCA-527 firmware. Note, the setup routine updates the function library, that is also used by other applictions for the MCA-527 (WinSPEC, WinMCS, ...) if they start the MCA-527 Oscilloscope. In order to avoid possible compatibility problems, it is recommendable to update WinSPEC to at least version 2.02.0000 and WinMCS to at least version 2.01.0000.