Garmin GPSMAP 500 Series Owner's Manual

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Contents

Garmin GPSMAP 500 Series Owner's Manual Manual pdf 28 page image

When the radar is transmitting, do not look directly at theantenna at close range; eyes are the most sensitive part of thebody to electromagnetic energy.NOTE: Not all models support radar.When you connect your compatible chartplotter to an optionalGarmin marine radar, such as a GMR™ 1226 xHD2 or a GMR 24HD, you can view more information about your surroundings.The GMR transmits a narrow beam of microwave energy as itrotates to a 360° pattern. When the transmitted energy contactsa target, some of that energy is reflected back to the radar.Radar Display ModesNOTE: Not all modes are available with all radar devices and allchartplotters.Select Radar.Cruising Mode: Shows a full-screen image of the gatheredradar information.Harbor Mode: Intended for use in inland waters, this modeworks best with short-range signals (2 nm or less).Offshore Mode: Intended for use in open waters, this modeworks best with long-range signals.Sentry Mode: Allows you to put the radar into timed-transmitmode, in which you can configure a radar transmit andstandby cycle to conserve power. You can also enable aguard zone in this mode, which identifies a safe zone aroundyour boat. If you switch from Sentry mode to another mode,the radar switches to full-time transmission and disables allguard zones.Radar Overlay Mode: Shows a full-screen image of thegathered radar information on top of the Navigation chart.The Radar overlay displays data based on the most recentlyused radar mode.Transmitting Radar SignalsNOTE: As a safety feature, the radar enters standby mode afterit warms up. This gives you an opportunity to verify the areaaround the radar is clear before beginning radar transmission.1 With the chartplotter off, connect your radar as described inthe radar installation instructions.2 Turn on the chartplotter.The radar warms up and a countdown alerts you when theradar is ready.3 Select Radar.4 Select a radar mode.A countdown message appears while the radar is starting up.5 Select Menu > Transmit Radar.Adjusting the Radar RangeThe range of the radar signal indicates the length of the pulsedsignal transmitted and received by the radar. As the rangeincreases, the radar transmits longer pulses in order to reachdistant targets. Closer targets, especially rain and waves, alsoreflect the longer pulses, which can add noise to the Radarscreen. Viewing information about longer-range targets can alsodecrease the amount of space available on the Radar screen forviewing information about shorter-range targets.• Select to decrease the range.• Select to increase the range.Tips for Selecting a Radar Range• Determine what information you need to see on the Radarscreen.For example, do you need information about nearby weatherconditions or targets and traffic, or are you more concernedabout distant weather conditions?• Assess the environmental conditions where the radar is beingused.Especially in inclement weather, longer-range radar signalscan increase the clutter on the Radar screen and make itmore difficult to view information about shorter-range targets.In rain, shorter-range radar signals can enable you to viewinformation about nearby objects more effectively, if the rainclutter setting is configured optimally.• Select the shortest effective range, given your reason forusing radar and the present environmental conditions.Adjusting the Zoom Scale on the RadarScreenThe radar zoom scale, also called the radar signal range,represents the distance from your position (the center) to theoutermost ring.From a Radar screen, select or .Each ring represents an even division of the zoom scale.For example, if the zoom scale is set at 3 miles, each ringrepresents 1 mile from the center out.Marking a Waypoint on the Radar Screen1 From a Radar screen or the Radar overlay, select a location.2 Select New Waypoint.Sentry ModeSentry mode allows you to put the radar into timed-transmitmode, in which you can configure a radar transmit and standbycycle to conserve power. You can also enable a guard zone inthis mode, which identifies a safe zone around your boat andsounds an alarm when a radar object enters the zone. Sentrymode works with some Garmin GMR model radars.Enabling Timed TransmitFrom the sentry screen, select Menu > Sentry Setup >Timed Transmit > On.Setting the Standby and Transmit TimesBefore you can set the standby and transmit times, you mustenable timed transmit (Enabling Timed Transmit, page 22).To help conserve power, you can indicate the radar standbytime and the transmit time to implement periodic radar signaltransmissions at set intervals.1 From the sentry screen, select Menu > Sentry Setup.2 Select Stdby Time.3 Enter the time interval between radar signal transmissions.4 Select Transmit Time.5 Enter the duration of each radar signal transmission.Enabling a Guard ZoneFrom the sentry screen, select Menu > Sentry Setup >Enable Guard Zone.Defining a Circular Guard ZoneBefore you can define the boundaries of the guard zone, youmust enable a guard zone (Enabling a Guard Zone, page 22).You can define a circular guard zone that completelyencompasses your boat.1 From the sentry screen, select Menu > Sentry Setup >Adjust Guard Zone > Move Radar Guard Zone > Circle.2 Select the location of the outer guard zone circle.3 Select the location of the inner guard zone circle to define thewidth of the guard zone.22 Radar