NI VMS for NI TestStand usage hints

NI VMS for NI TestStand usage hints

NI VMS for NI TestStand examples

Refer to the NI Video Measurement Suite Readme for NI VMS examples for NI TestStand. Within the examples folder, a Core subfolder contains subfolders for CAV Test, CVBS Test, and S-Video Test. These sequences will perform offline testing according to the standards with very narrow limits.

Regarding Multiburst measurements

The following numeric local variables can be defined in the sequence to offset Multiburst measurements:

Locals.MultiburstOffsetINdB
Locals.MultiburstOffsetInVolt
Locals.MultiburstOffsetInIRE

The unit, IRE, is only used in analyzing NTSC signals and if the unit is selected to IRE.

If the variables is not defined 0 offset is used for all units.

Parallel testing considerations

NI TestStand process models and sequence call properties makes it possible to call sequences in parallel. The way NI VMS works is that one acquisition and analysis of data will be one step and steps will follow that only does analysis on this data buffer content. NI VMS does not protect data by making one data buffer for each thread, and therefore it is recommended that acquisition and analysis of the acquired data is protected using synchronization methods e.g. on sequence files Batch Process Model serial synchronization, Locks or other multi UUT synchronization methods.