Ronnie,
With the versions of TestStand and LabWindows/CVI that you are using, you should be able to find the TestStand Instrument Drivers in the <National Instruments>\Shared\CVI\instr\TestStand\API directory.
The TestStand Synchronization Manager is a separate ActiveX server from the TestStand Engine and provides its own API libraries. As Doug mentioned previously, to access the TestStand Synchronization Manager, you want to load the tssync.fp instrument driver into your project. This library will give you access to functions you might find useful such as:
TSSyncLib_ISyncManagerCreateMutex(), TSSyncLib_IMutexLockMutex(), TSSyncLib_IMutexEarlyUnlockMutexEx(), etc.
Hope this helps.
Manooch H.
National Instruments
