Errata Sheet

The following table gives a quick reference to the 3DM-CV7-GNSS/INS device limitations and the status.

Firmware Version	Name	Limitation	Workaround
1.2.04	WMM Omitted	The World Magnetic Model (WMM) is omitted. This may cause large true heading errors when using magnetic heading aiding. This may be resolved in a future firmware update.	Provide a user-defined magnetic declination angle Magnetic Field Declination Source Control (0x0D, 0x43) appropriate with the application location. Alternative: Use other Heading Alignment methods for Filter Initialization and Aiding Measurements like True Heading (0x13,0x3A) for External Heading, or GNSS Kinematic Alignment.

Firmware Version

Name

Limitation

Workaround

1.2.04

WMM Omitted

The World Magnetic Model (WMM) is omitted. This may cause large true heading errors when using magnetic heading aiding.

This may be resolved in a future firmware update.

Provide a user-defined magnetic declination angle Magnetic Field Declination Source Control (0x0D, 0x43) appropriate with the application location.

Alternative: Use other Heading Alignment methods for Filter Initialization and Aiding Measurements like True Heading (0x13,0x3A) for External Heading, or GNSS Kinematic Alignment.