That feature would not likely be useful at this time for digital MAF anyway since the frequency is limited to 2kHz. That feature will not be available for the 3000 series since it is dependent on the 4000 hardware.
This does not prevent you from doing this task.
Capture your digital MAF along with TPS. Then use a measurement frequency between rulers on the MAF channel and frame the highest airflow area to see the max frequency of your MAF.
Be sure to dial up max samples to maintain adequate sample rate for the length of capture.
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