Operating Instructions and Installation Instructions

ComNav Navigator G2 Installation & Operation Operation

Document PN 29010081 V1.1 - 34 -

Figure 18 - Heading Information Page Description

Table 5 – Heading Information Page Fields Descriptions

Field Description NMEA Message

Source

Heading Heading angle in units of degrees. ‘T’ if True

Heading. ‘M’ if Magnetic Heading.

HDT, HDM, HDG

Deviation Heading Deviation in units of degrees. ‘E’ for East

adjustment. ‘W’ for West adjustment.

HDG

Variation Heading Variation in units of degrees. ‘E’ for East

adjustment. ‘W’ for West adjustment.

RMC, HDG

Heading Bias Heading Bias which is added, by the GPS compass,

to the sensed heading. Typically used to adjust for

mounting offset.

Property sentence

Heading

Smoothing

Heading Smoothing Filter time constant in units of

seconds.

Property sentence

ROT

Smoothing

Rate of Turn Smoothing Filter time constant in

units of seconds.

Property sentence

COG

Smoothing

Course Over Ground Smoothing Filter time

constant in units of seconds.

Property sentence

Gyro Aid Status of whether the Gyro Aid filter is Active

(YES) in the G2 Series Compass. Gyro Aid allows

the compass to improve the sensed accuracy above

what is possible with only GPS signals.

Property sentence