AN-000240
Document Number: AN-000240
Page 13 of 23
Revision: 2.0
Algo Setting Descriptions:
•
Sensor height:
Sets up the library with recommended parameters given a specific sensor height
o
Distance from the horn/housing bottom surface to floor surface. See
Section 2.2
for mounting
Section 3.1
for auto
parameters
•
Use custom configuration:
Check this box to enable custom parameters below
•
Customize ringdown start index:
Define the index where ringdown started (typical is 8). Start index of window before floor
reflection. Shift this setting to where ringdown begins or to desired starting point.
•
Customize ringdown length:
Define the size of ringdown window (typical ringdown window ends before floor 1st echo)
•
Customize floor start index:
Define the index where floor echo started (depends on floor height). Occurs after ringdown
section
•
Customize floor length:
Define the size of floor echo (typical size is 16 samples at decimation = 1).
Figure 3-6. Ringdown and Floor Windows
Ringdown
Ringdown
Sense
Area
Sense
Area
Entire Sense
Window
Entire Sense
Window
floor_start_idx
floor_length
ringdown_start_idx
ringdown_length
len_window
