®
Figure 179 below shows the NMEA 2000® source selected.
Figure 179 – Setting Variation Source to NMEA 2000® Only
If there is no magnetic variation source available on either the NMEA 2000® or the NMEA 0183 interface, and you wish to display true heading information, you may manually enter a magnetic variation. To set a manual variation value, you must change the variation source by pushing the Enter key ( 
) with the “Variation Source:” menu item selected. This highlights the next field where you select “Manual Entry:” by scrolling ( 
or 
) through the options until you reach “Manual Entry:”. Pressing the Enter key ( 
) with the “Manual Entry:” menu item selected takes you to the screen shown in Figure 180.
Figure 180 – Entering Manual Variation
Press the Scroll Up ( 
) or Scroll Down ( 
) key to change the amount of East or West variation. Press the Accept Key ( 
) when the desired number is shown. You may also disable manual variation by setting the value to “Disable”; this option appears between the values 0.0°E and 0.1°W when scrolling through the values. When manual variation is disabled, the SSC200 will not transmit any variation information and heading information will be available only in magnetic heading format.
Revision 1.4.16a | Page 163 |
