OPS-UM-001-C User Manual
OmniPreSense Corporation
9
Timing Report
–
set to control the reporting of the time. The time is measured in seconds/milliseconds
from power on of the module. Use the OJ command to report the time in seconds and milliseconds along
with the speed and direction information (or direction can be turned off). When the module is put in low
power state, the clock will continue counting.
If you wish for the module to provide “the real
time”, then
set it to “the Unix time” (see wikipedia.org/wiki/Unix_time).
Command
Name
R/W
Value
C?
Query Time
Read
Ex. {“Clock”:”50”} reports 50 seconds since
power on.
C=
n
Set Time
Write
Reset the clock start time. For example, n = 10
will start the clock at 10 seconds and then
continue counting.
Module/Transmit Power
–
set to control the operating mode (PA, PI, PP) or the transmit power. The
typical maximum transmit power is 9 dB. Reducing the transmit power does not reduce the overall
power consumption of the module. Note that the detection range will decrease with decreased
transmit power.
Command
Name
R/W
Value
PA
Active Power Mode
Write
Normal operating mode.
PI
Idle Power Mode
Write
No activity, waits for Active Power command.
The RF is powered down for further power
savings.
PP
Single Shot Mode
Write
Use this mode to capture and process a single
buffer of data. The module will stay in PP
mode until either a PA or PI command is given.
While in PP mode, the RF device is powered
off to save power.
P7 or PN
Transmit Power Control or
Min Power
Write
Transmit is set at -9 dB below max power.
P6
Transmit Power Control
Write
Transmit is set at -6 dB below max power.
P5
Transmit Power Control
Write
Transmit is set at -4 dB below max power.
P4
Transmit Power Control
Write
Transmit is set at -2.5 dB below max power.
P3 or PD
Transmit Power Control or
Mid Power
Write
Transmit is set at -1.4 dB below max power.
PD has additional “overdrive” of 0.2 dB when
utilized.
P2
Transmit Power Control
Write
Transmit is set at -0.8 dB below max power.
P1
Transmit Power Control
Write
Transmit is set at -0.4 dB below max power.
P0 or PX
Transmit Power Control or
Max Power
Write
Transmit power is set at its maximum value
with maximum range. PX has additional
“overdrive” of 0.2 dB when utilized.
Duty Cycle Control
–
set to control the duty cycle operation. The time set is the amount of time the
module will sleep between transmit/receive pulses and processing. During the sleep time the orange LED
will be on. For settings longer than 1 second, the RF will be powered off to save power. In this manner,
lower power operation may be achieved.
