Installation

IMPORTANT: This equipment is not suitable for use in locations where children are likely to be present.

 

Mount the 3DM-CV7

Mechanical provides dimensions and tolerances as well as cabling and connector specifications and part numbers.

Properly Power the 3DM-CV7

WARNING:Only use power supplies within the operating range of the sensor, or permanent sensor damage or personal injury could result. Observe connection polarity.

Power must be supplied to the 3DM-CV7 via pin 3. See Electrical for pinout and input voltages.

 

Apply the Proper Mounting Transform

In its default state, the labeled axes of the 3DM-CV7 are assumed to be aligned with the vehicle frame (X axis in the direction of travel, Z axis down). If the device is mounted in an orientation where the sensor frame axes are not aligned to the vehicle axes, then a sensor-to-vehicle transform must be applied to correct for this misalignment. See the Vehicle Frame section for details on applying this transformation.

 

Install the Antenna(s)

The GNSS antenna(s) must be mounted and the offsets in relation to the 3DM-CV7 must be input into the Navigation Filter. See Antenna(s) for details on installing the antenna and accounting for offsets.

 

Install the Aiding Sensor(s)

The 3DM-CV7 is designed to accept external Aiding Measurement data to help improve its navigation solution in challenging GNSS environments. The effectiveness of these aiding measurements is directly affected by the accuracy of the aiding measurement and the care that is taken when installing the aiding sensors. The External Aiding Sensors page provides a brief overview of best practices when installing common aiding sensors and provides recommendations on field-testing approved models to simplify integration with the 3DM-CV7.

 

Configure the Aiding Frame(s)

The 3DM-CV7 provides a flexible, yet simplified method for accounting for the effects of translations and rotations of External Aiding Sensors from the 3DM-CV7 through the use of Aiding Frames. Correctly configuring these frames is critical to achieving a successful navigation solution. See the Aiding Frames page for instructions on properly configuring these frames for your application.

Perform a Magnetometer Calibration

If a magnetometer is being used as a heading aiding measurement, a magnetometer calibration with the 3DM-CV7 installed in the application and after all other components have been installed is crucial in ensuring accurate heading measurements. See Magnetometer Calibration for details on performing this calibration using our convenient desktop application, SensorConnect.