IIScan the text with your partner to finish the sentences.
1 All of these ATC applications use the ACARS air-ground link, ………………. 2 ICAO developed SARPsATN, …………………………………….. …….. 3 Technology has overtaken AFTN, and …………………………………….. 4 The ATN SARPs development began in the early 1990s and, ……………….. 5 In the past 15 years, the Internet, which is based on a different packet-switched technology,............................................................................ 6 It may be necessary for ICAO to make some accommodation to TCP/IP …….. came essential to airline operations, ………………………………………….... 8 Long-range data link was implemented first using Inmarsat satellites;.…….. 9 The oceanic coverage provided by satellites and data link was an.…………. 10 All of the advantages of data link over voice communications were ………... 11 The advantages included: …………………………………………………….12 High frequency data link (HFDL) provided another long-range ……………..13 VDL Mode 2 provided a higher-speed ………………………………………. 14The ACARS avionics architecture is centered on the MU……………………. 15 All air-ground radios connect to the MU or CMU.…………………………...16 The CMU is connected to ……………………………………………………. 17 All message blocks to or from the aircraft, over any of the air-ground subnetworks,…………………………………………………………………….. 18 Although the MU handles all ACARS message blocks, it does not perform a message-switching function because……………….……………………………. 19 MCDU, along with the printer, is …………………………………………….20 The FMS or ATSU, will also ………………………………………………...21 The vast majority of data link messages today are …………………………... 22 The MU identifies each uplink message block ………………………………. 23 The MU takes each downlink, adds associated aircraft information such as.... 24 The latest avionics for each of the four sub- networks accepts ……………….25 The subnet work avionics will then transform the message block into..……..26 The original VHF sub network that was pioneered in 1978 uses..………….. 27The signal-in-space is sometimes called plain-old-ACARS..………………. 28 The VHF subnet work uses a form of FSK called minimum.……………….29 Each signaling interval represents one bit of information, so the 2400 baud rate ……………………………………………………………. 30 After initial synchronization, the receiver then can determine ……..……….. 31 VHF ACARS uses the CSMA protocol to reduce..……………………........ 32 CSMA is nothing more than the automated version of voice radio protocols…. 33 The VHF ACARS subnet work is an example of..……………………………. 34 The aircraft does initiate a contact with the central message processor..……...
|
