Original question:
IWR1642: Decrease Chirp BW by decreasing "ADC Valid Start Time" parameter
I want to know how to get the parameter of adcStartTime,How to make sure that the adcStartTime is best one,? when we ues this value ,there is no distortion.
As the document "Programming Chirp Parameters in TI Radar Devices "described , can I know the mentioned functions ?
Hi Lu,
As mentioned in the app note, the Chirp/Ramp Timing Calculator in MMWAVE-STUDIO computes the ADC Start time parameter based on the inputs provided for Ramp Slope, sampling mode, sampling rate, number of samples etc. Further it presents the ADC start time values corresponding to various settling time options e.g. 90%, 95%, etc to allow for minimal ADC start time vs performance trade-off evaluation. This calculator takes care of the above mentioned considerations in the app note. Please note that the internal calculations including the functions you highlighted are not exposed to users.
You may also find the following thread useful which discusses this topic in more detail:
AWR1642BOOST: Understanding changes in "TX start time" and "ADC valid start time"
Please mark the thread as answered if this resolves your query otherwise get back if you have more questions on this topic.
Regards
-Nitin
