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Audio Panel and CNS
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ADDITIONAL AFCS AVOIDANCE
INDEX APPENDICES FEATURES
On the WPT - Airport Information Page, the cursor can be placed on the frequency field by pressing the FMS Knob and scrolling through the list. The frequency is transferred to the COM Standby Field with the ENT Key.
Press ENT Key to load frequency into PFD1 COM Standby Field. Cursor then advances to the next frequency.Select INFO Softkey for AIRPORT, RUNWAYS, and FREQUENCIES WindowsSelected Airport Identifier and InformationRunway InformationFigure 4-11 WPT – Airport Information Page
190-00494-02 Rev. B Garmin G1000 Pilot’s Guide for the Cessna Citation Mustang 105
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COM frequencies can also be auto-tuned from the NRST – Nearest Airspaces, NRST – Nearest Frequencies, and NRST – Nearest Airports Pages on the MFD in a similar manner using the appropriate softkeys or MENU Key, the FMS Knob, and the ENT Key.
Figure 4-12 NRST – Nearest Airspaces, NRST – Nearest Airports, and NRST – Nearest Frequencies Pages
106 Garmin G1000 Pilot’s Guide for the Cessna Citation Mustang 190-00494-02 Rev. B
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Frequency Spacingpacingpacing
The G1000 COM radios can tune either 25-kHz spacing (118.000 to 136.975 MHz) or 8.33-kHz spacing (118.000 to 136.990 MHz) for 760-channel or 3040-channel configuration. When 8.33-kHz channel spacing is selected, all of the 25-kHz channel spacing frequencies are also available in the complete 3040-channel list.
COM channel spacing is set on the System Setup Page of the AUX Page Group.
Figure 4-13 COM Channel Spacing25-kHz Channel Spacing8.33-kHz Channel Spacing
Changing COM frequency channel spacing:
1) Select the AUX – System Setup Page.
2) Press the FMS Knob to activate the flashing cursor.
3) Turn the large FMS Knob to highlight the Channel Spacing Field in the COM Configuration Box.
4) Turn the small FMS Knob to select the desired channel spacing.
5) Press the ENT Key to complete the channel spacing selection.
While the COM CONFIG Window is selected, the G1000 softkeys are blank.
Figure 4-14 AUX – System Setup PageSelect 8.33-kHz or 25.0-kHz COM Frequency Channel SpacingAUX - SYSTEM SETUP PAGE
190-00494-02 Rev. B Garmin G1000 Pilot’s Guide for the Cessna Citation Mustang 107
Audio Panel and CNS
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Automaticutomaticutomatic Squelch
Automatic Squelch quiets unwanted static noise when no audio signal is received, while still providing good sensitivity to weak COM signals. To disable Automatic Squelch, press the VOL/SQ Knob. When Automatic Squelch is disabled, COM audio reception is always on. Continuous static noise is heard over the headsets and speaker, if selected. Pressing the VOL/SQ Knob again enables Automatic Squelch.
When Automatic Squelch is disabled, a white SQ appears next to the COM frequency.
Figure 4-15 Overriding Automatic SquelchSquelch IndicationPress the COM VOL/SQ Knob to turn off Automatic Squelch. Press again to restore Automatic Squelch.
Volume
COM radio volume level can be adjusted from 0 to 100% using the VOL/SQ Knob. Turning the knob clockwise increases volume, turning the knob counterclockwise decreases volume. When adjusting volume, the level is displayed in place of the standby frequencies. Volume level indication remains for two seconds after the change.
Figure 4-16 COM Volume LevelCOM Volume Level Remains for Two Seconds
108 Garmin G1000 Pilot’s Guide for the Cessna Citation Mustang 190-00494-02 Rev. B
Audio Panel and CNS
SYSTEM
OVERVIEW
FLIGHT
AUDIO PANEL EICAS INSTRUMENTS
& CNS
FLIGHT
MANAGEMENT
HAZARD
ADDITIONAL AFCS AVOIDANCE
INDEX APPENDICES FEATURES
4.3 NAV Operationperation
NAV Radio Selection and Activationctivationctivation
The NAV Frequency Box is composed of four fields; two standby fields and two active fields. The active frequencies are on the right side and the standby frequencies are on the left.
A NAV radio is selected for navigation by pressing the CDI Softkey located on the PFD. The active NAV frequency selected for navigation is displayed in green. Pressing the CDI Softkey once selects NAV1 as the navigation radio. Pressing the CDI Softkey a second time selects NAV2 as the navigation radio. Pressing the CDI Softkey a third time activates GPS mode. Pressing the CDI Softkey again cycles back to NAV1.
　
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