Hello Greycat,
The subpalettes for the VISA and Serial subVIs are suppose to be
unavailable if your target is a PDA device. LabVIEW loads a
seperate palette set for each target. Since VISA is currently not
supported on the PDA, you cannot directly open the the VISA functions
or the Serial functions when you are targeting a PDA device.
Instead, you can use the Serial Compatibility VIs, which then call the
appropriate VISA calls.
Hope
Wendy L
LabWindows/CVI Developer Newsletter