VAL Avionics NAV 2000 User's Guide download pdf (Page 48)

PFD Operation

4-14 SkyView Pilot’s User Guide - Revision Q

configured within SkyView - to prevent confusion in systems that have multiple navigational

devices. SkyView’s own navigation mapping capability is always labeled “SKYVIEW”. The GPS

waypoints are displayed in HSI info area for SKYVIEW and ARINC navigators such as the GNS and

GTN. To cycle through the available sources, press HSI SRC in the PFD Menu.

Course Indicator

Figure 25 - HSI Course Indicator

The course indicator has an arrow at its end which points to the currently selected course.

When a GPS source is selected, course direction is normally set implicitly by the programmed

route. When a NAV radio source is selected, the course direction can be set either on the radio

or via the CRS (course) joystick function on SkyView, depending on the NAV radio that is

connected. To maintain course regardless of wind condition, line the course needle (with

centered CDI) up with the GPS ground track pointer. The course indicator is fixed to the rotation

of the DG, so it is easy to see which way you must turn to get on course. When tuned to a LOC,

course should be set to the runway heading via the joystick CRS function. HSI courses are

remembered for each HSI source, this is especially helpful when switching between VOR and ILS

or GPS and ILS sources.

Note that when the Garmin SL30 is tuned to a LOC/ILS frequency, it disables its own OBS knob.

Course Deviation Indicator (CDI)

Figure 26 - 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 DG and course indicator. By turning the aircraft towards the

CDI needle you reduce your deviation.

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VAL Avionics NAV 2000 User's Guide Page 48