The default directory for R&S ZVB user data is C:\Rohde&Schwarz\Nwa. Other instruments may use different default directories. To make remote control programs compatible, it is recommended to define all paths relative to the default directory, to be set via MMEMory:CDIRectory DEFault.
// Select default directory, change to sub-directory (relative to default directory)
MMEMory:CDIRectory DEFault
MMEMory:CDIRectory 'Traces'
MMEMory:STORe:TRACe 'Trc1', 'S21.s1p'
MMEMory:LOAD:TRACe 'Trc1', 'S21.s1p'
// Alternative, more compact definition
MMEMory:CDIRectory DEFault
MMEMory:STORe:TRACe 'Trc1', 'Traces\S21.s1p'
You may also read the default path (MMEMory:CDIRectory?) and use the external RC program to build the complete paths.