Garmin GPS 92 - Manual (Page 70)

Vertical Navigation Function
The last option featured on the GPS 92’s E6-B menu
is the vertical navigation (VNAV) function, which lets you
create a rate of descent profile from your present position
and altitude to a final altitude at a specified location. To
use the VNAV feature, your aircraft’s ground speed must
be greater than 35 knots, and you must be navigating an
active GOTO or route.
To perform a VNAV calculation:
1. Highlight the ‘From’ field and press
E
.
2. Enter the initial altitude and press
E
.
3. Press
E
. Enter the final ‘To’ altitude and press
E
.
4. Press
E
. Enter the offset (the distance from the way-
point you’ll be referencing for your final ‘To’ altitude) and
press
E
.
5. Select the ‘Before’ or ‘After’ option for the distance off-
set and press
E
to confirm.
6. Press
E
. Enter the waypoint you want to use as a
reference for your final altitude. If you are navigating an
active route, the waypoint field will offer the active-to
waypoint for the reference waypoint (the waypoint page
will appear for you to confirm).
7. Press
E
to confirm the waypoint. The vertical speed
for the descent will appear in the ‘At’ field. To select a
faster or slower rate of descent, press
E
, enter a
new rate and press
E
to confirm.
Main Menu:
E6-B
Reference
6000 FEET
2000 FEET
2 NM
64
92 manual 4/15/98 3:48 PM Page 64