Tektronix PRISM User Manual page 143

Application information
Use cases for measuring One use case for the Timing application is to measure the delay in a gateway and
network. If a properly timed SDI signal is applied to a gateway, then the timing
timing
measurement on the resulting IP flow will display the combined latency in the
gateway and the network.
Another use case is to measure multiple signals and compare the relative timing.
This was commonly done in SDI and Composite environments to enable timing
adjustment of the various black signals to align the inputs to the production
switcher.
PRISM Media Analysis Platform User Manual 121