PNI SeaTRAX - Manual (Page 36)

PNI Sensor Corporation DOC#1018154 r02
SeaTRAX User Manual Page 31
6.5.4 Sync Mode
Sync Mode enables the module to stay in Sleep Mode until the user’s system sends a
trigger to report data. When so triggered, the SeaTRAX will wake up, report data once,
then return to Sleep Mode. One application of this is to lower power consumption.
Another use of the Sync Mode is to trigger a reading during an interval when local
magnetic sources are well understood. For instance, if a system has considerable
magnetic noise due to nearby motors, the Synch Mode can be used to take measurements
when the motors are turned off.
Enter Sync Mode
On the Test tab, near the bottom of the screen, click the “Sync Mode” check box to
enter Sync Mode.
Sync Mode Output
To retrieve the first reading, click the button. Heading, pitch and roll
information will be displayed on Current Reading window. If the “Enable 3D Model
Display” box is selected on the Configuration tab, then the helicopter will follow the
movement as well. The module will enter Sleep Mode after outputting the heading,
pitch, and roll information. To obtain subsequent readings, the user should first click
on the button to wake up the module and then click on the
Read> button to get the readings, after which the module will return to sleep.
Exit Sync Mode
Click on the button and then uncheck the “Sync Mode” check box to
exit Sync Mode.
Note that sends a 0xFF signal as an external interrupt to wake up the
module. This is not done for the first reading as the module is already awake.