Automatic Distortion Compensation | Furuno PG-1000 instruction

2.3Automatic Distortion Compensation

Magnetic field distortion can be automatically corrected as follows:

Note: This function is only effective after cor- recting for magnetic field distortion (refer to page 5).

1.Press the [AUTO] key more than two sec- onds to light the AUTO LED.

RMC or VTG data is required which contains GPS position in RMC, SOG (speed over ground) and COG (course over ground) in VTG.

2.Set up magnetic variation (manual or auto- matic) at the GPS navigator.

3.Press the [TRUE] key more than two sec- onds.

The TRUE LED blinks. It lights when receiving data from the navaid.

AUTO TRUE CALIB STATUS

:On

:Off

:State depends on settings

Figure 20

2.To cancel automatic compensation, press the [AUTO] key more than two second to turn off the AUTO LED.

Note 1: Turn off this function when your boat is near a steel ship or iron bridge, since they affect sensor performance.

Note 2: Correct distortion whenever you feel error is excessive.

2.4Selecting Output Data Format

The PG-1000 can output heading true or mag- netic. The default setting is magnetic heading in AD-10 format.

CAUTION

Turn off the autopilot before selecting output data format.

The autopilot may turn the rudder suddenly.

1.Connect Furuno GPS Navigator to PG- 1000.

When receiving magnetic variation data from the navaid.

: On

:Blinking

:Off

: Status depends on settings.

Figure 21

Note: If the TRUE LED dose not light within 90 seconds after pressing the [TRUE] key, check that the GPS navigator is connected and properly working.

4.To return to magnetic heading output, press the [TRUE] key more than two seconds to turn off the TRUE LED.

Note 1: If the PG-1000 stops receiving mag- netic variation data while outputting true head- ing, the TRUE LED stops lighting and blinks. The last used variation data is used.

Note 2: Magnetic variation cannot be corrected manually at the PG-1000. Therefore, if you desire true heading output but do not have a navigation aid, you may enter appropriate variation as shown in 1.6 Heading Alignment on page 6.

Note 3: HDM and HCC sentence are magnetic heading output sentences. HDG sentence must be changed to true heading at the equipment connected, by using the magnetic heading and magnetic variation data in the sentence.