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  1. What is magnetic variation? The difference in direction between the magnetic North pole (magnetic North) and the direction to the Earth's rotational North pole (true North) is referred to as variation. Variation changes depending where you are on the Earth and can be obtai... Read More
  2. I see that Maretron’s DSM150, DSM200, and DSM250 displays have a SSC200 configuration setting called "Variation Source:"; what is this? Maretron's DSM150, DSM200, and DSM250 displays have a SSC200 configuration setting called "Variation Source:", which is used to tell the compass from where it should receive the magnetic variation for subsequent transmission of the heading (HDT)... Read More
  3. I see that Maretron’s DSM150, DSM200, and DSM250 displays have a WSO100 configuration setting called "Barometric Pressure:"; what is this? Maretron's DSM150, DSM200, and DSM250 displays have a WSO100 configuration setting called "Barometric Pressure:", which is used to adjust the WSO100 barometric pressure reading to account for local variation. For example, if you would like all t... Read More
  4. I see that Maretron’s DSM150, DSM200, and DSM250 displays have a WSO100 configuration setting called "Outside Temperature:"; what is this? Maretron's DSM150, DSM200, and DSM250 displays have a WSO100 configuration setting called "Outside Temperature", which is used to adjust the WSO100 outside temperature reading to account for local variation. For example, if you would like all th... Read More
  5. I see that Maretron’s DSM150, DSM200, and DSM250 displays have a WSO100 configuration setting called "Outside Humidity:"; what is this? Maretron's DSM150, DSM200, and DSM250 displays have a WSO100 configuration setting called "Outside Humidity", which is used to adjust the WSO100 outside humidity reading to account for local variation. For example, if you want to adjust the outs... Read More
  6. What messages (or PGNs) does the SSC200 transmit? The SSC200 compass transmits the following messages (or PGNs):PGN 127250 - Vessel Heading (Fields: 1-SID, 2-Heading Sensor Reading, 3-Magnetic Heading Correction 4- Magnetic Heading Correction 5-Heading Sensor Reference)PGN 127251 - Rate of Turn (Fie... Read More
  7. Why doesn’t the SSC200 compass transmit true heading? The SSC200 is a magnetic compass, which means that it measures the direction of Earth's magnetic field relative to the magnetic poles (magnetic heading). This is different than a gyrocompass, which measures heading relative to the Earth's r... Read More
  8. I navigate using true heading and not magnetic heading; how do I use the SSC200 compass and N2KView software to view my heading in true? The SSC200 compass outputs heading information in magnetic form and before N2KView can display true heading, the variation must be known. One source of variation is the Maretron GPS antenna/receiver (GPS200). If an SSC200 and GPS200 are connected tog... Read More
  9. Which NMEA 0183 sentences does the SSC200 transmit? The SSC200 transmits the following NMEA 0183 sentences or messages:HDG - Heading, Deviation & VariationHDM - Heading, MagneticHDT - Heading, TrueROT - Rate of TurnMAROUT - Maretron Proprietary Output Sentence... Read More
  10. I see that Maretron’s DSM150, DSM200, and DSM250 displays have a SSC200 configuration setting called "Reset Factory Defaults"; what is this? Maretron's DSM150, DSM200, and DSM250 displays have a SSC200 configuration setting called "Reset Factory Defaults", which is used to return the SSC200 to its factory settings. Resetting the SSC200 erases the deviation table, clears the installat... Read More
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