User's Manual

UM-003-A OPS243-A User Manual 5 OmniPreSense Corporation
Default Settings
The default settings of the module are set to provide solid performance over a wide range of applications.
Upon power-up the default settings are used, and operation begins. Future updates will allow the module
to retain the settings of the module from the last operation. The default settings are listed in Table 2.
Table 2. Default Settings
API Command
API Command
Doppler (-A)
Default Value
FMCW (-B)
Default Value
Output Units
UM/uM
m/s
m
Data Precision
F2
2
2
Sampling Rate
SX
10,000
N/A
Sampling Buffer Size
S>
1024
N/A
Simple Motion Interrupt
IG
Off
Off
Reported Speed Filter
R>n, R<n
Off
N/A
Reported Direction Filter
R|
Off
N/A
Reported Range Filter
r>n, r<n
N/A
Off
Magnitude Filter
M>n, M<n (Doppler) or
m>n, m<n (FMCW)
>10
>100
JSON Output
OJ
Off
Off
LED Control
OL
On
On
Magnitude Report
OM
Off
Off
Number Reports
On
1
1
Raw Data Output
OR
Off
Off
Post FFT Data Output
OF
Off
Off
Speed or Range Report
OS/OD
On
On
Time Report
OT
Off
Off
Output Units
OU
N/A
On
Sensor Power Mode
PA
Active
Active
Power Level
PX
On
On
Speed Operating Range (-A Doppler only)
The maximum speed reported is determined by the Sampling Frequency. For slow moving objects, a
sample rate of 5,000 (SV command) is perfectly fine. The default setting of 10,000 (SX command) provides
a detectable speed of up to 31.1 m/s (69.5 mph) while 20,000 (S2 command) provides up to 62.2 m/s
(139.1 mph). The resolution of the reported speed increases as the sample frequency goes down. The
range of values is summarized in Table 3.