VOR Operations
Enter a NAV frequency (108.000 MHz to 117.950 MHz) by using
either manual frequency selection or frequency search. The frequency
selection is done in the same manner used to select a COMM
frequency. As usual, the selected frequency will appear in the lower
right-hand side of the screen.
If a VOR signal is not received on the selected frequency, the screen
will display the selected frequency only and nothing else. This is
similar to the flag on a panel-mounted NAV display. When a VOR
signal is received, a screen similar to the following will be displayed.
The Course Deviation Indicator (CDI) is on the top line of the screen.
The CDI will always be initially centered when a VOR signal is first
acquired. When receiving a VOR signal, each division on the CDI
(starting with the edge of the center circle) represents a two degree
deviation. Therefore, the CDI on the SP-200 has the ability to display
up to a 10 degree deviation to the right or left in VOR mode. The
following example shows a 6 degree deviation to the right if your
desired course is flying to the station on the 90 degree radial (fly left
towards the needle to be on course).
The three digits in the lower left-hand side of the screen are the Omni
Bearing Selector (OBS) setting. Whenever the CDI needle is
centered, such as when a VOR signal is first received, the OBS setting
represents your bearing to or radial from the selected VOR station.
The T or F following the OBS setting specifies whether the OBS
setting is a bearing to (T) or a radial from (F) the VOR.
19
090T117.000
090T117.000
SP-200 BOOKLET 9/28/04 5:46 PM Page 23
