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To enable the output displacement option, click the check box in the properties window and
enter the offsets from the IMU origin, to the new displaced location. Offsets are given in the
vehicle reference frame.
Note:
Any noise in the acceleration outputs will be multiplied when output displacement is
used. Typical installations in land-based vehicles have angular vibrations of about 2 rad/s².
This equates to 2 m/s² of additional vibration with a 1 m output displacement. It will be
necessary to filter the data if output displacement is used.
Trigger 1 and Trigger 2
The RT1003 has two triggers, each of which can be configured as an input trigger, output
trigger or an IMU sync pulse. To define a trigger, click in the Settings column, then select the
button to open the properties window, shown in Figure 31. Select the trigger type from the
drop-down list.
Figure 31.
NAVconfig trigger properties window
The NMEA tab is enabled when the Packet is set to NMEA.
Input trigger:
Accepts a trigger input from an external device, such as a camera, to generate
a data point with all measurements at the exact timestamp of the trigger. The event input has
a pull-up resistor so it can be used with a switch or as a CMOS input. The input sees less than
