ADF CONTROL PANEL

Question 1

FREQ INDICATOR / SELECTOR / TRANSFER Switch

Answer 1

Freq Indicator.

• shows freq selected
• shows if the system is in ADF or ANT (antenna) mode
• ADF Mode:
  
  • audio reception possible
  • ADF bearing sent to the DUs and standby RMI
• ANT Mode:
  
  • audio reception optimized
  • NO ADF bearing data available

Freq Selector.

• Rotate knob:
  
  • Outer knob: set the hundreds
  • Middle knob: sets the tens
  • Inner knob: sets the ones and tenths

Transfer Switch.

*

Question 2

TONE Switch

Answer 2

• 2 different styles based on which version of the ADF you have

Option 1:

• OFF / ON: either disables or enables tones

Option 2:

• 1/OFF/2: add tones to the respective receiver or disables tones on all

Question 3

MODE Selector

Answer 3

ADF:

• audio reception possible
• ADF bearing sent to the DUs and standby RMI

ANT:

• audio reception optimized
• NO ADF bearing data available

OFF:

• power removed from selected receiver

TEST:

• test bearing pointers and warning flags on the DUs and the standby RMI
• DU ADF Indications:
  
  • ​ADF fail flag and ADF bearing pointer go out of view
  • ADF fail flag goes out of view (bearing pointer still out of view)
  • bearing pointer slews to 135 degree relative bearing
• Standby RMI indications:
  
  • ​ADF fail flag
  • ADF FF goes out of view and bearing pointer stays at last position before test
  • bearing pointer slews to 135 degrees relative bearing