User's Manual

UniLink UL-800/801 FANS
SCN 30.X
Operator’s Manual
136 23-20-06.02
December 2011
Acronym/Abbreviation/
Term
Description
which is a UniLink service.
TWIP
Terminal Weather Information for Pilots
TX
Transmit
UASC
Universal Avionics Systems Corporation
UL
UniLink (UASC)
UM
Uplink Message
UNVERIFIED Message
An UNVERIFIED message is one that
does not contain safeguards to prevent
data corruption during transmission. Such
messages are labeled AOC on the page in
which they are displayed. (See VERIFIED
Message)
USB
Universal Serial Bus
UTC
Universal Time Coordinated
VDL
VHF Digital Link
VDR
VHF Data Radio
VERIFIED Message
A VERIFIED message is one that has
been safeguarded against potential data
corruption during transmission and is
determined to be error-free using CRC
code comparisons and validity indicators.
(See UNVERIFIED Message)
VHF
Very high frequency terrestrial-based
packet mode. This is a data
communications link used for obtaining
textual weather, D-ATIS, and the
transmission of position reporting, OOOI,
and safety services communications
(UniLink Flight Information Services).
Does not support weather graphics.
VOX
Voice
WOW
Weight On Wheels
WPT
Waypoint