NI 5672 Arb Waveform Mode Tuning Speed Factors

A user-specified complex IQ baseband signal is passed to the NI-RFSG driver in arb waveform mode.

In this mode, the amount of available RAM affects RF signal generator tuning time because large waveforms require a large amount of RAM. If sufficient RAM is unavailable, the system uses virtual memory, which dramatically increases execution times.

Note  Refer to the specifications document that shipped with your RF signal generator device for specific tuning times.

Tips  The following measures can decrease arbitrary waveform tuning times: Disable phase continuity if your application does not require a phase-continuous signal. Write large waveforms in blocks to avoid exceeding RAM capacity and using virtual memory. NI-RFSG examples demonstrate how to write waveforms in blocks.