User's Manual

UL-801 Installation Manual
Page 29
23-20-06 15 December 2011
Q. Advisory Alerts, Device Status, and Error Messages
UniLink generates advisory alerts annunciating normal and non-normal conditions that
require crew action. Selecting the advisory alert displays the UniLink page on which the
corresponding information is displayed or from which a required action may be performed.
Examples of advisories are: NEW MSG, VHF VOICE, NOCOMM, and NEW WX MAP.
UniLink provides real-time status information for other LRUs UniLink interfaces with via
the DEVICE STATUS page. When configured, devices such as FMSs, internal VHF radio,
741 SatCom-based system, printer, etc. show as OK or INOP. INOP is displayed when
communication between both devices has failed. If a particular device is not configured,
UniLink displays NO CONFIG as the device status.
Additionally, the state of various input sensors including all analog discretes is displayed via
the SENSOR STATUS page. These displays are useful for initial system installation and
trouble-shooting in the field
UniLink generates error messages to alert the crew of non-normal conditions. Generally, a
NEW ERROR MSG advisory appears, which when selected will display the error message
title and additional details if applicable. A log of error messages appears on the ERROR
LOG page.
Examples of error messages are:
• CONFIGURATION WARNING
• POWER –ON BIT FAILURE
• VHF CHANNEL CONGESTION
Additionally, UniLink generates pop-up windows for normal and non-normal alert
information that may require more timely crew awareness. Examples of pop-up window
messages are:
• QUEUE FULL
• PRINT JOB COMPLETE
R. Cockpit Voice Recorder (CVR)
Replacing voice communications between crews and air traffic control (ATC) with datalink
messages is intended to improve safety, enhance efficiency, and increase air traffic capacity.
This is one of the main features in the UniLink.
The UL-801 provides a configurable ARINC transmit port to support the recording of
datalink messages on a compatible ARINC 757Cockpit Voice Recorder (CVR/CVFDR).
The CVR/CVFDR records all messages that are sent to it by the UniLink. Messages are
provided to the CVR/CVFDR on an ARINC 429 data bus. This port may be configured for
high or low speed based on the recorder’s speed requirement.
When an ARINC transmit port is connected to a UASC CVR/CVFDR, the ARINC transmit
port must be configured as follows:
• PORT SPEED: HIGH
• PORT DEVICES: CVR