Data and Clock Position
Your NI digital waveform generator/analyzer allows you to configure the subperiod time at which each waveform sample is generated or acquired. This subperiod time selection is referred to as the data position. You can also configure the position of the exported Sample clock (clock position).
Configuring data and clock positions allows you to use your NI digital waveform generator analyzer for many common applications including, among others, measuring set-up and hold times, measuring propagation delays, and maximizing the timing margins among high-speed data transfers.