TILTZERO

Set the zero level and save Terrain Compensation settings to NVM

Platform:

SMART7-I, SMART7-W, SMART2-TB

Use this command to set the internal zero level for Terrain Compensation and to save the settings (including antenna height which is configured with the TILTFILTER command) to NVM.

Sending this command with the ZERO option will set the current roll and pitch as the zero level. Setting the zero level allows the Terrain Compensation filter to account for any mounting offset between the receiver and the vehicle or any inherent tilt of the vehicle. It will also observe the internal sensor biases to allow for better performance of the filter. Zeroing must be conducted while the vehicle is stationary on a flat surface. This option is used for single-stage zeroing.

Sending this command with the NEW and ADD options will set the zero level when performing two-stage zeroing.

Sending this command with the SAVE option will save the zero level and antenna height settings to NVM. Theses settings will be automatically used on following startups.

Sending this command with the RESTORE option will clear the saved settings from NVM and restore the factory defaults.

The $PMDT command can also be used to zero the filter (single-stage leveling only) and save the settings to NVM.

Message ID: 1222

Abbreviated ASCII Syntax:

TILTZERO action

ASCII Example:

TILTZERO zero

Field	Field Type	ASCII Value	Binary Value	Description	Format	Binary Bytes	Binary Offset
1	Command header	–	–	TILTZERO header This field contains the command name for abbreviated ASCII or the message header for ASCII or Binary.	–	H	0
2	action	ZERO	0	Set the current orientation as zero (level) for single-stage zeroing.	Enum	4	H
		SAVE	1	Saves the current level setting and antenna height to NVM.
		RESTORE	2	Clear the current Tilt filter settings saved in NVM and restore the factory defaults.
		NEW	3	Begin a new two stage calibration.
		ADD	4	Complete a two stage calibration and set the zero level.

Use the ZERO option to perform a single-stage zeroing. Use the NEW and ADD options to perform a two-stage zeroing.
Refer to Leveling the Terrain Compensation Sensor for information about single-stage and two-stage zeroing.