VHF NAVIGATION SYSTEM (Cont)
RADIO TUNING AND OPERATION
MFD TUNING
The multifunction display (MFD) and display control panel (DCP) provide single point control of both the onside and
cross-side radios from the pilot’s and copilot’s position. The radio menu provides a summary of the radios as well as control
for each. The RADIO button on the DCP shows the radio menu on the MFD. The MFD sends signals to the aircraft radios
to tune frequencies, set operating modes adjusts squelch levels, and selects voice/data modes. The MFD also responds to
tune/control commands from the cross-side MFD or the control display unit (CDU). Either acts as the master tuning control.
COM RADIO OPERATION
To tune the radio, execute the steps as follows:
1. Push the RADIO button on the DCP to show the radio menu if another menu/list is active.
2. Push the 1/2 button if necessary to alternately select the side 1 radio menu and the side 2 radios menu.
3. Turn the MENU knob on the DCP to move the selection box on the radio menu to the radio (COM, NAV, ATC/
TCAS, etc.) frequency or channel that is to be tuned.
4. Turn the TUNE knob on the DCP to tune the desired frequency or channel.
5. Push the tune knob to acknowledge the new frequency/channel.
6. To change modes, adjust squelch, and other non-tuning functions of a radio:
-Turn the MENU knob to move the selection box to the appropriate radio.
-Push the RADIO button on the DCP to select the CONTROL menu of the radio.
-Turn the MENU knob to move the selection box on the CONTROL menu.
-Turn the DATA knob to change the mode or select an option, or push the PUSH SELECT button to step
through available options
-Push the PUSH SELECT button to step through available options.
7. To exit the CONTROL menu, push the RADIO button. The display returns to the radio menu.
NAV RADIO OPERATION
The radio menu provides basic NAV radio tuning control. The NAV CONTROL menu controls the display for other NAV
radio operation. Each NAV radio installed on the aircraft has its own NAV CONTROL menu. The active, recall, and DME
frequency displays are identical to the display on the radio menu.
To set the NAV radio, execute the steps as follows:
1. Push the RADIO button on the DCP to show the radio menu on the MFD if another menu/list is active.
2. Turn the MENU knob on the DCP to move the selection box to the NAV radio (NAV1 or NAV2) display on the
radio menu.
3. Push the RADIO button on the DCP to show the appropriate NAV CONTROL menu on the MFD.
4. The following operations are performed on the NAV CONTROL menu.
-Tune the DME frequency independently from the paired NAV radio frequency.
-When the DME hold is on, turn the MENU knob to move the selection box around the DME frequency.
-Turn the TUNE knobs to tune the desired DME frequency.
- Select the marker sense mode.
-Turn the MENU knob to move the selection box to the MKR SENSE control.
-Turn the DATA knob or push the PUSH SELECT button to select marker sense mode LO or HI.
- Select the NAV TEST mode.
-Turn the MENU knob to move the selection box to the TEST control.
-Turn the DATA knob or push the PUSH SELECT button to select the TEST mode.
Challenger Global 300 - Navigation
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