User's Manual
UM-003-A OPS243-A User Manual  2  OmniPreSense Corporation 
Radar Sensor Types 
OmniPreSense provides two different types of sensors, Doppler radar sensor reporting motion and speed 
and FMCW radar sensors reporting range. The feature differences for these sensors is shown in Table 1. 
The following API commands pertain to both types of sensors except for special cases.  In these cases, this 
document will call out the special command for either a Doppler (-A), FMCW (-B), or both Doppler and 
FMCW (-C) radar. 
Table 1. Radar Sensor Feature Matrix 
Sensor 
Type 
Motion 
Speed 
Direction 
Signal 
Magnitude 
Range 
FCC/IC 
Modular 
Approval 
Detection 
Range 
(RCS = 10) 
OPS243-A 
Doppler 
● 
● 
● 
● 
● 
75-100m 
OPS243-C 
Doppler 
& FMCW 
● 
● 
● 
● 
● 
● 
(pending) 
50-60m 
Terminal Control 
A  simple Command  Terminal  can  be used  to  control the  module  operation  with the  API  commands. 
Examples of simple but very useful Command Terminals are Tera Term and PuTTY. Both are free, open 
source terminal tools for the PC/Mac which can easily connect to a serial port and accept data over USB 
from the OmniPreSense module. 
To begin using the OmniPreSense sensor, first download Tera Term or PuTTY onto your PC/Mac.  With the 
OmniPreSense  sensor  plugged  into  the  USB  port  of  your  PC/Mac,  start  Tera  Term  or  PuTTY.    A 
configuration window such as Figure 2 or Figure 3 will appear. Tera Term can detect the active COM port 
(greyed out to right of Serial button if TCP/IP is selected).  Select the Serial button and press OK. For 
PuTTY, you’ll need to know which COM port is used, set its value, select the Serial button, and Open. 
Figure 2. Tera Term Startup Menu 










