Garmin G1000 NXi Pilot’s Guide for the Cessna NAV III
190-02177-02 Rev. A
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL
FEA
TURES
APPENDICES
INDEX
121
AUDIO PANEL AND CNS
»
If the current CDI navigation source is GPS, the approach frequency is transferred to both NAV1 and NAV2
active frequency fields. The frequencies that were previously in the NAV1 and NAV2 active frequency fields
are transferred to standby fields.
»
If the current CDI navigation source is GPS, and if the approach frequency is already loaded into the NAV1
or NAV2 standby frequency field, the standby frequency is transferred to active.
»
If the current CDI navigation source is NAV1 or NAV2, the approach frequency is transferred to the standby
frequency fields of the selected CDI NAV radio.
MARKER BEACON RECEIVER
NOTE:
The marker beacon indicators operate independently of marker beacon audio and cannot be turned
off.
The marker beacon receiver is used as part of an ILS. The marker beacon receiver is always on and detects
any marker beacon signals within the reception range of the aircraft.
The receiver detects the three marker tones – outer, middle, and inner – and provides the marker beacon
annunciations located to the left of the Altimeter on the PFD.
Figure 4-12 Marker Beacon Keys
GMA 1347
GMA 1360
The Audio Panels provide three different states of marker beacon operation; On, Muted, and Deselected.
Pressing the
MKR/MUTE
Key selects and deselects marker beacon audio. The key annunciation indicates when
marker beacon audio is selected.
During marker beacon audio reception, pressing the
MKR/MUTE
Key mutes the audio but does not affect the
marker annunciations. The marker tone is silenced, then waits for the next marker tone. The
MKR/MUTE
Key
Annunciation is illuminated, indicating audio muting. The audio returns when the next marker beacon signal
is received. If the
MKR/MUTE
Key is pressed during signal reception (O, M, I indication) while marker beacon
audio is muted, the audio is deselected and the
MKR/MUTE
Key Annunciation is extinguished.
Pressing the
HI SENS
Key switches between high and low marker beacon receiver sensitivity. The HI SENS
function (annunciation illuminated) is used to provide an earlier indication when nearing a marker during an
approach. The LO SENS function (annunciation extinguished) results in a narrower marker dwell while over
a station.