± 2g / 4g / 8g / 16g Tri-axis Digital
Accelerometer Technical
Reference Manual
PART NUMBER:
KX132-1211
Rev. 1.0
31-Jul-2019
36 Thornwood Dr.
–
Ithaca, NY 14850
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–
All Rights Reserved
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Page
62
of
73
Single Tap Detection
The latency timer (TLT) sets the time period that a tap event will only be characterized as a single tap. A second tap
must occur outside of the latency timer. If a second tap occurs inside the latency time, it will be ignored as it occurred
too quickly. The single tap will be reported at the end of the TWS. Figure 18 shows a single tap event meeting the PI,
latency and window requirements.
Figure 18:
Single Directional-Tap
TM
Timing
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3
3.1
0
20
40
60
80
100
120
140
160
Calculated Performance Index
time(sec)
je
rk
(
c
o
u
n
ts
)
PI
TWS
TLT
TTL
