OmniPreSense OPS243-A, User Manual, Page: 5 / 22

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.