The following specifications apply to the Configure Chirp (N Ch) VI when configuring a logarithmic chirp signal.
|Start frequency range||≤PDM rate/32, corresponding to 96 kHz at 3.072 MHz PDM rate|
|Stop frequency range||≤PDM rate/32|
|Pre-chirp duration range||0 to 232 − 1 PDM samples, or approximately 23 minutes at PDM rate of 3.072 MHz|
|Chirp duration range||0 to 232 − 1 − Pre-chirp duration samples|
The logarithmic chirp rate range, in seconds, is defined by the following equation:
Refer to the following table for maximum chirp rates at different PDM rates.
|Maximum Logarithmic Chirp Rate||PDM Rate = 600 kHz||PDM Rate = 800 kHz||PDM Rate = 2.4 MHz||PDM Rate = 3.072 MHz||PDM Rate = 4.8 MHz|
|Range||±105 octave/s||±140 octave/s||±422 octave/s||±541 octave/s||±845 octave/s|
|Minimum chirp time for 10 octaves||95 ms||71 ms||24 ms||18.5 ms||12 ms|