SV-D700, SV-D1000 and SV-D1000T Operation
SkyView Classic Pilot’s User Guide –
Revision Z
4-15
Note that when the Garmin SL30 is tuned to a LOC/ILS frequency, it disables its own OBS knob.
Course Deviation Indicator (CDI)
Figure 28
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HSI CDI
The CDI indicates how far to the left or right you are from the selected course. When in NAV
mode, full scale deviation indicates ten degrees of deviation from the VOR radial that has been
chosen as the course. When tuned to a localizer, full scale represents 2.5 degrees of deviation.
When following a GPS course, full scale represents 5 nautical miles of deviation. When on
course, the course indicator and the CDI make a solid line, making it easy to see when there is
little error in your aircraft's position. Unlike a CDI indicator found in basic aircraft, the CDI
needle on an HSI rotates with the heading indicator and course indicator. By turning the aircraft
towards the CDI needle you reduce your deviation.
To/From Indicator
Figure 29
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HSI To Indication
Because an HSI rotates the course line on top of the heading indicator, the to/from indicator
always points at the physical VOR/LOC transmitter, or towards the GPS waypoint. If it is
pointing the same direction as the arrow at the end of the course line, then that is a "to"
indication. If it is pointing the opposite direction of the arrow at the end of the course line, then
that is a "from" indication.
Bearing Pointers
Figure 30
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HSI Bearing 1 Pointer
Figure 31
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Bearing 1 Pointer with Distance
