Garmin GPSMAP 196 Pilot's Manual page 46

A M P > P
VIATION ODE AGES ANEL
VNAV (Vertical Navigation)
The VNAV sub tab in the Main Menu provides settings for the
vertical navigation feature. These settings create a three-dimensional
profile that guides you from your present location and altitude to a
final (target) altitude at a specified location.
When the VNAV profile is defined, message alerts help keep you
informed of your progress. The bar on the HSI on the Panel Page
shows your VNAV profile.
To use the vertical navigation feature, your ground speed must be
greater than 35 knots and you must be navigating a Goto or a route.
The "Approaching VNAV Profile" message appears one minute
prior to the initial descent point. The descent angle locks to prevent
changes in speed from altering the profile. The VNAV feature does
not take into account any changes in groundspeed that occur during
the transition from level flight to descent or climb.
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P
AGE
At 500 ft above the target altitude, the "Approaching Target
Altitude" message appears, the time to vertical navigation goes
blank, and the VNAV indicator disappears from the Panel Page.
CAUTION: The GPSMAP 196 is a VFR navigation tool and
should not be used to perform instrument approaches. VNAV is
only a VFR navigation aid and is not intended for instrument
approaches.
Distance to Profile
Distance to Target
Visual representation of VNAV
Target Altitude
Airport
GPSMAP 196 Pilot's Guide