Garmin Flight Deck 100 用户手册

190-00728-04  Rev. A

®

71

The Vertical Speed Indicator (VSI) displays the aircraft vertical speed on a fixed scale with labels at 2000 and

4000 fpm and minor tick marks every 1000 fpm. Digits appear in the pointer when the climb or descent rate
is greater than 100 fpm. If the rate of ascent/descent exceeds 4000 fpm, the pointer appears at the edge of the
tape and the rate appears inside the pointer.

A magenta chevron is displayed on the VSI to indicate the Required Vertical Speed for reaching a VNV target

altitude once the “TOD [Top of Descent] within 1 minute” alert has generated. See the Flight Management
and  AFCS  sections  for  details  on  VNV  features.    Refer  to  Section  2.2,  Supplemental  Flight  Data,  for  more
information about VNV indications on the PFD. In TCAS II installations, the VSI also provides vertical speed
guidance during TCAS II Resolution Advisories; see the Hazard Avoidance section for details.

The Vertical Deviation Indicator (VDI) is a magenta chevron indicating the baro-VNV vertical deviation when

Vertical Navigation (VNV) is being used. The VDI appears in conjunction with the “TOD within 1 minute”
alert.  The VDI is removed from the display if vertical deviation becomes invalid.  See the Flight Management 
Section for details on VNV features, and refer to Section 2.2, Supplemental Flight Data, for more information
about VNV indications on the PFD.

The Glideslope Indicator appears to the left of the altimeter whenever an ILS frequency is tuned in the active

NAV field and the aircraft heading and selected course are within 107˚. A green diamond acts as the Glideslope
Indicator, like a glideslope needle on a conventional indicator. If a localizer frequency is tuned and there is no
glideslope, “NO GS” is displayed in place of the diamond.

The glidepath is analogous to the glideslope for GPS approaches supporting SBAS vertical guidance (LNAV+V,

L/VNAV, LPV). When an approach of this type is loaded into the flight plan and GPS is the selected navigation
source, the Glidepath Indicator appears as a magenta diamond during the approach.  If the approach type 
downgrades past the final approach fix (FAF), “NO GP” is displayed in place of the diamond.

Full-scale deflection of two dots is 1000 feet.