User's Manual

UM-003-A OPS243-A User Manual 10 OmniPreSense Corporation
Reported Speed/Range/Direction Filter – use these settings to set the range of data to report. Settings
are available for either a minimum or maximum value below or above which data will not be reported.
Commands are available to set speed, range, and direction of speed filters. These filters can be used to
help set sensitivity levels of detection. This command requires a return () after the number. Direction
filter allows reporting only a single direction or both.
Command
Name
R/W
Notes
R>n
Reported Minimum Speed
Filter
Write
n is any number upon which no detected
speeds below that number will be reported.
R>0 resets to no limit. Doppler (-A, -C) radar
only.
R<n
Reported Maximum Speed
Filter
Write
n is any number upon which no detected
speeds above that number will be reported.
R<0 resets to no limit. Doppler (-A, -C) radar
only.
r>n
Reported Range Filter
Write
n is any number upon which no detected
range below that number will be reported.
r>0 resets to no limit. FMCW (-B, -C) radar
only.
r<n
Reported Range Filter
Write
n is any number upon which no detected
range above that number will be reported.
r<0 resets to no limit. FMCW (-B, -C) radar
only.
R?
Report Current Speed Filter
Read
Reports current settings of the speed filter
r?
Report Current Range Filter
Read
Reports current settings of the range filter
R+
Inbound Only Direction
Write
Only reports inbound direction
R-
Outbound Only Direction
Write
Only reports outbound direction
R|
Clear Direction Control
Write
Reports both directions
Frequency Control (-A, -C Doppler only) – use this setting to set the desired transmit frequency. Set n to
a positive or negative number to set the frequency. T=0 is the default setting targeting 24.125GHz. Each
increment steps approximately 18MHz. The programming steps are limited to 24.0 through 24.25GHz for
the OPS243. The limits on n are -2 (~24.0GHz) to 2 (~24.25GHz) for the OPS243 which has some guard
banding to ensure it stays within the 24.0-24.25GHz ISM band. Depending on the spread between the
current frequency and the newly set frequency, there may be a long settling time on the order of 5-10
seconds or longer based on the size of the jump in values. Writing ?F will provide the current transmitter
output frequency.
Command
Name
R/W
Value
T=n
Frequency Setting
Write
T=0 is the default setting for 24.125GHz.
?F
Frequency Output
Read
?F returns the output frequency of the
transmitter in GHz.