18-5 Installation: GPS antenna

Selecting an antenna

Restart GPS:

Fit one of these GPS antennas:

Normally use the GPS antenna supplied.

An optional differential beacon DGPS antenna to give enhanced accuracy within range of land based differential beacons in areas where WAAS or EGNOS are not available. Such a DGPS antenna has both a GPS receiver and a beacon receiver, and it automatically applies the beacon correction to the GPS position.

A compatible GPS or DGPS instrument or antenna connected by NavBus (see section

18-9) or NMEA (see section 18-10). In this case, the 657 does not need its own antenna.

Note:

To configure the 657 for different antenna options, see section 17-4.

For more information, contact your Northstar dealer.

DGPS Source:

Enables or disables the satellite based DGPS correction (see section 7). The options are None or WAAS/EGNOS. Do not Enable WAAS/EGNOS outside their coverage areas or the accuracy of the position might be degraded.

WAAS covers all of the USA and most of Canada. To use WAAS, the GPS antenna must have a clear view of the sky towards the equator. EGNOS will cover most of Western Europe.

Restarts the GPS receiver, satellite reception will be lost until the receiver completes its restart and acquires the satellites.

! WARNING

MOB will not work if the Instrument does not have a GPS fix.

Select restart GPS and press

Installing an antenna

If an external antenna is required, install the antenna and fit the antenna cable back to the display unit. Follow the instructions in the manual supplied with the antenna. Fit an optional Northstar extension cable if required.

If a SmartCraft™ system or Northstar petrol/ gasoline sensors are fitted as well, fit a AIS cable:

GPS antenna

Yellow

Yellow

GPS/fuel AIS cable

White

Other connections

Otherwise:

Yellow

GPS antenna

 

 

During setup, configure the 657 for the chosen antenna, see section 17-4.

Northstar Explorer 657 Installation and Operation Manual

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NorthStar Navigation EXPLORER 657 Installation GPS antenna Selecting an antenna, Installing an antenna, Dgps Source