User's Manual

UL-801 Installation Manual
Page 31
23-20-06 15 December 2011
T. Transmission Media Interfaces - Configuration Option
SatCom is supported with a configurable interface to an A741 SDU for text-based messages.
Telephony is supported with a configurable RS-232 interface to a UASC T-T Aero-M or
Iridium systems for both text-based messages and graphical weather maps. MagnaStar and
UASC Aero-I tip/ring telephony interfaces are not supported.
VHF communications are supported with a configurable ARINC interface to an external
A750 VDR for text-based messages.
U. Text Message Processing
UniLink supports Aeronautical Operational Communications (AOC) flexible messaging and
FANS message handling. UniLink also supports both uplink and downlink messages from
peripheral systems.
UniLink supports Air Traffic Services ATS and AOC text messages, downlink graphical
weather requests, and uplink graphical weather images stored and displayed in one or more
message logs. Uplink and downlink message integrity checks are performed by means of a
32-bit CRC calculation.
Message alerting functions include configurable output discretes for visual and aural alerting
and digital outputs to various LRUs. Message alert inhibiting is configurable and is provided
during critical flight phases (takeoff and landing) and is based on flight parameters including
ground speed, altitude, and FMS approach mode.
V. Media Advisory Reporting Option
If enabled, UniLink sends the Media Advisory message to update the DSP regarding the
status and availability of datalink media, such as VHF, TEL, or SAT. It is useful for the DSP
to know the available datalink media when preparing a message for transmission to UniLink.
Upon request by the host processor, the DSP may forward this information to other DSPs.
Crew interaction is not required.
W. Automatic Position Reporting Option
The Automatic Position Reporting Option includes configurable on-ground and in-air
automatic position reporting selections. UniLink provides the ability to temporarily
disable/enable the automatic position reporting function and modify the reporting interval via
the UniLink POS REPORT page.
The Automatic Position Reporting messages may be customized by the user and may
conform to the format in ARINC Characteristic 702A. The user will be able to delay
transmission of Automatic Position Report messages for a configured amount of time after
the OFF event to reduce missed transmissions due to signal blockage during take off.
X. OOOI Reporting/History Option
The OOOI Reporting/History Option includes Out, Off, On, In (OOOI) downlink messaging
and history maintenance stored in UniLink’s non-volatile memory. Configurable input
parameters (door, brake, strut, ground speed) can be received from multiple sources based on
the specific installation. It’s recommended that OOOI be enabled if ARINC is selected as a
DSP.