Communications Flashcards
What are the major components of the radio management system (RMS)
Two Integrated units, two integrated communication units, two radio management units, one tuning back up control head, and three digital audio panels.
Which two separate modules make up the integrated communication unit
A VHF communication transceiver module, and an ATC transponder module
What are the modules that make up the integrated navigation unit?
 The VHF navigation receiver module (VOR, localizer, glideslope, and marker, Beacon receiver), the ADF module, DME transceiver module, and digitizers
What is the purpose of the TBCH
The tuning backup control head can operate as standalone control unit or back up control, providing alternative means of tuning COM2 and NAV2
Which system is used to send/receive signals to/from the flight, deck, attendant, handset, passenger entertainment, and pre-recorded announcement systems
Pa System
Which displays are shown on the RMU main page
COM and NAV frequencies, ATC, TCAS, and ADF
How can the ramp attendant communicate with the flight crew?
Through the phone system by pressing the cockpit call button, which activates a chime in the flight deck headphones, and speakers
How many hours of recorded information does the CVR retain?
The most recent two hour in solid state, crush survival memory
When is the CVR energized, and how can it be erased?
Whenever the essential bus is energized, and on the ground with the parking brake applied
What indicates a successful self test of the CVR
One second activation of the status LED on the control panel
What does the emergency button on the TBCH do?
In EMRG mode, the RMS will only except NAV, and COM, tuning via the TBCH, ignoring the RMU
What effect would losing the primary radio system bus have on the COM systems
There is no longer the ability to cross side tune the RMU, and the TCBH becomes inoperative
What is the indication that an RMU has been cross side tuned
The frequencies will be shown in Amber
How would you change to direct COM tuning on the RMU, and disable the preset frequency line
Depressed the line select button for three seconds
To transmit through the oxygen mask microphone which button on the DAP must be selected
Boom/mask selected to mask
Which buses supply power for the VHF frequencies on the RMU one and two
RMU1 VHF is on essential bus 1, and RMU2 VHF is on the DC bus 2
In an electrical emergency, which RMU should be used for COM/NAV and which for the navigation page
No 1 RMU for COM/NAV and No 2 RMU for navigation
What do Amber dashes on number 2 RMU indicate
Power to the number 2 RMU VHF frequencies has been lost
What is the function of the EMER button on the DAP?
The pilot button hard wires, the captain to COM1/NAV1, and the cop pilot button hard wires the first officer to see COM2/NAV2 in the event of power failure to the DAP. All other buttons on the effected DAP will be disabled.
What are the available RMU pages?
Radio page
NAVV and COM, memory pages
ATC/TCAS control page
Navigation back up page
Engine Back up pages one and two
SYS select page
Maintenance page
HF control and memory pages
If IC-600 number 1 fails, Which page is automatically shown on the RMU number one
Engine back up page
How is the active frequency shown in the upper line of the COM or NAV window switch with the preset frequency shown in the lower line
Press, the top left bezel panel button for NAV or top right for COM
What is the purpose of the digital radio system buses (RSBs)?
 control, and information exchange between all the components of the RMS with the exception of the DAP
What is the function of the side tone knob on the DAP?
Prevents undesirable feedback of speaker side tone audio into the microphone
