Garmin GPSMAP 5215 Owner's Manual

Also see for GPSMAP 4008 - Marine GPS Receiver: Technical reference Important safety information Owner's manual Supplement Owner's manual

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Garmin GPSMAP 5215 Owner's Manual Manual pdf 95 page image

GPSMAP® 4000/5000 Series Owner’s Manual 91SonarConfiguring the Advanced Sonar SettingsNote: These features are available only on the GSD 24 and GSD 26.Before you can configure the temp. Source, you must have a SD 26 and more than one water-temperaturesensor or temperature-capable transducer.With the GSD 24 and GSD 26, you can configure various sonar display and data source settings.1. From the Home screen, select Sonar.2. Select a sonar view.3. Select Menu > More > Advanced.4. Select one or more options:• Select transmit to stop the transducer from transmitting.• Select tVG to adjust the time-varying gain, which can reduce noise.• Select echo Stretch to adjust how the targets appear on the screen. If the echo is too wide, the targetswill blend together. If the echo is too narrow, the targets might be small and difficult to see.• Select Bottom tracking to select which frequency to use for determining depth.• For the GSD 26, select temp. Source to select which water-temperature sensor or temperature-capabletransducer is the source for the water temperature log.FrequenciesSelecting FrequenciesYou can indicate which frequencies are used when using a dual-frequency transducer. With the GSD 26, youcan use a chirp frequency to display more-defined targets on the screen.1. From the Home screen, select Sonar.2. Select a sonar view.3. Select Menu > Frequency.4. Complete an action:• Select 200 kHz to show data from a 200 kHz sonar signal. This is useful mainly for more shallow,inland waters.• Select 50 kHz to show data from a 50 kHz sonar signal. This is useful mainly for deeper waters.• For the GSD 22 or GSD 24, select Dual to show both 200 kHz and 50 kHz data• For a GSD 26 used with a broadband transducer, select High Chirp to transmit a chirp signal on thehigh channel.• For a GSD 26 used with a broadband transducer, select Low Chirp to transmit a chirp signal on the lowchannel.Managing FrequenciesNote: This feature is available only on the GSD 26.You can set the GSD 26 to operate on a wide variety of popular, discrete fishing frequencies. For maximumdepth penetration, set the frequency to a low setting.Setting up New Frequencies1. From the Home screen, select Sonar.2. Select a sonar view.3. Select Menu > Frequency > Manage Frequencies.4. Select New Preset.5. Select High or Low.6. Enter a frequency:• For the GPSMAP 4000 series, use the Rocker or Numeric Keypad.• For the GPSMAP 5000 series, use the on-screen keyboard.7. Select Done.