NI 5671 Arb Waveform Mode Tuning Speed Factors
In arb waveform generation mode, a user-specified complex IQ baseband signal is written to the AWG module.
In arb waveform mode, the following main factors affect RF signal generator tuning time:
- Digital IF equalization—The process of digitally equalizing the waveform is computationally demanding and adds to tuning times.
- Available RAM—Large waveforms require a large amount of RAM. If sufficient RAM is unavailable, the system uses virtual memory, which dramatically increases execution times.
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Note Refer to the specifications document that shipped with your RF signal generator device for specific tuning times. |
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Tips The following measures can decrease arbitrary waveform tuning times:
- For signal bandwidths less than 500 kHz, disable digital IF equalization.
- 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.
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