• WAAS• EGNOS• MSAS• GAGAN• All Others2. Select the relevant differential system fromthe menu to switch reception for that systemOn (default) and Off.COG/SOG FilterThe COG/SOG filter averages the velocity vectors tocompensate for the oscillating motion of the vessel,giving a clearer indication of the vessel’s course andspeed.The filter does not affect the calculation of yourreceiver’s reported position. The velocity vectorscalculated from the signal provide an instantaneousmeasure of speed and direction of the receiver. TheCOG and SOG can therefor seem erratic undercertain conditions. For example, when a vessel ismoving slowly through rough seas, the receivermoves from side to side as well as in the directionof travel.Slow moving vessels, or vessels sailing in roughseas will benefit from a high setting, whereas apower boat that can quickly change speed anddirection will benefit from a low setting.Selecting COG/SOG filterYou can change the level of filter applied toCOG/SOG.From the GPS Set-up menu: Homescreen > Set-up> System Settings > GPS Set-up:1. Select COG/SOG Filter.A list of available filter levels is displayed:• Low• Medium (default)• High2. Select the require filter level from the list.Restarting the GNSS (GPS/GLONASS)receiverTo restart the GNSS (GPS/GLONASS) receiverfollow the steps below:From the GPS Set-up menu: Homescreen > Set-up> System Settings > GPS Set-up:1. Select Restart GPS.The receiver will be restarted.3.19 Enabling autopilot controlEnabling the autopilot control function —SeaTalk and SPX SeaTalkng autopilotsTo enable control of your SeaTalk or SPX SeaTalkngautopilot using your multifunction display follow thesteps below.From the Homescreen:1. Select Set-up.2. Select System Settings.3. Select Autopilot Control so that On ishighlighted.Selecting Autopilot Control will switch the controlbetween On and Off.On a system containing multiple displays the pilotcontrol is enabled on all displays at the same time.Enabling the autopilot control function —Evolution autopilotsTo enable control of your Evolution autopilot usingyour multifunction display follow the steps below.From the Homescreen.1. Select Set-up.2. Select System Settings.3. Select External Devices.4. Select Pilot Set-up.5. Select Pilot control so that On is highlighted.Selecting Pilot control will switch the Autopilotcontrol function on and off.Getting started 43