User's Manual

UL-801 Installation Manual
Page 27
23-20-06 15 December 2011
Graphical Weather Depiction
UniLink provides configurable graphic ports which can be configured to interface with a
total of six graphics buses.
Graphical weather information is available only when the UniLink is interfaced to a SatCom
system via the RS-232 connection and supported by the DSP. The tip and ring data interface,
available on previous UniLink models, is no longer required and therefore has been removed.
The graphics capability has been improved by the addition of two high resolution output
ports. Graphics may be displayed in high resolution (Hi-Res) for units that are capable of
displaying high resolution graphics, such as the EFI-890R in the Navigation Display (ND)
position or an MFD-640 with SCN 1011.4.8 or later installed.
Example Graphic
These two high resolution RS-422 ports may be configured to support two dedicated
EFI-890R displays (all EFI-890Rs are capable of high resolution display while all
CDU/MCDUs display in low resolution). In the event that both a low resolution and a high
resolution graphic is requested, the UniLink automatically requests and uplinks two
formatted images reflecting the same data during the same call:
• One formatted to support the display of images on the low resolution output
• One formatted to support high resolution images that will result in a larger, higher quality
image
Graphics Display Configuration Options
The Graphics Display Configuration Options include low resolution graphics transmission to
CDUs, remote CDUs, MCDUs, MFDs; and high resolution graphics to high resolution
EFI-890R displays or an MFD-640 with SCN 1011.4.8 or later installed.
P. ACARS Message Processing
UniLink provides services in the Aircraft Communications Addressing and Reporting
System (ACARS). There are two types of ACARS data communications, ground-to-air via
uplink messages and air-to-ground via downlink messages, both of which are supported by
SatCom or VHF. Messages sent from one aircraft to another can only be accomplished
through the use of user-defined messages via the ground network. Direct communication
from aircraft to aircraft is not available. Uplink messages are generated by Airline Ground
Host Centers or an equivalent service provider, ATC facilities or a Datalink Service Provider
(DSP) such as ARINC or SITA. Uplink messages not generated by a DSP are passed to a