General Information
...
Analog outputs are then connected to the T7:
U - channel 1 - AIN0
V - channel 2 - AIN1
W - channel 3 - AIN2
sonic speed - channel 4 - AIN3
Sample Dataset taken over 10 min:
And zoomed in to ~half a second of data taking:
...
Relevant pin connections (all of which are copied from the manual)
Output pins from the anemometer (p. 15 of manual):
To change the analog output settings, connect a RS 432 serial port to a windows computer and to the anemometer outputs.
RS 432 serial port pin connections (p.32 of manual):
For the serial connector we were using, pin 2 was white, pin 3 was yellow, pin 5 was orange, but apparently this isn't necessarily generically true.
The windows computer should have WIND software downloaded on it. Follow p. 46 of the manual.
Mounting plate
through bolts are McMaster Carr
Super-cheap hot-wire anemometer for airflow in the dome:
...
Ordered 100 feet of 4-pair cable from Digikey- 2467CSL005-ND
Scintillation coherence scale for acoustics
March 2, 2022
As with optical case, the Fresnel length scale for scintillation fringes is sqrt(lambda*L) = sqrt(L*c/f). For ultrasound with f=40,000 Hz, FL ~ 0.1 m * sqrt(L).
References
Re-Visiting Acoustic Sounding to Advance the Measurement of Optic.pdf
...