User's Manual

UL-801 Installation Manual
Page 18
23-20-06 15 December 2011
Device UniLink TX Speed (NOTE 1) UniLink RX Speed
Test Device (NOTE 3) LOW or HIGH HIGH
ARINC 743A GNSS Receiver Not Applicable HIGH or LOW (NOTE 4)
DADC1 Not Applicable HIGH or LOW (NOTE 5)
DADC2 Not Applicable HIGH or LOW (NOTE 5)
Generic 429 Device (1 – 4) LOW or HIGH NOTE 2
757 CVR HIGH HIGH Not Applicable
NOTE 1: Device TX speed supported by UniLink.
NOTE 2: The customer database specifies the data speed of this configurable device.
NOTE 3: The test device is not used in aircraft installations.
NOTE 4: References to an ARINC 743A GNSS receiver also include ARINC 743 Global Positioning
System (GPS) receivers. UniLink automatically detects the transmission speed (high/low)
of the GNSS or GPS and configures the interface accordingly.
NOTE 5: UniLink automatically detects the transmission speed (high/low) of the Digital ADC and
configures the interface accordingly.
NOTE 6: Does not apply to UL-801.
I. RS-232/422 Serial Ports
UniLink provides six general purpose RS-232/422 transmitters and six general purpose
RS-232/422 receivers. These ports are available to perform as six full duplex channels. The
ports are capable of operating up to a 19.2 kilobaud rate. The serial port type selection
(RS-232 or RS-422) is determined by the type of serial device selected during configuration.
UniLink RS-422 serial ports support the interface between the UniLink and various
combinations of CDU/MCDU display processors (DPs), flat-panel multifunction displays
(MFDs), and EFI-890R displays to accomplish display of uplinked graphic images.
UniLink can be connected to up to three CDUs and one remote CDU/MCDU via ARINC
739 protocol over an ARINC 429 physical layer providing UniLink with control of the
CDU/MCDU text display. The user selects graphics to acquire and display from text menus
rendered by UniLink on the CDU/MCDU via this interface.
EFI-890R and high-resolution MFD (SCN 1011.4.8) displays are connected to UniLink via
an RS-422. UniLink supports two high-resolution connections.
If the device assigned to a serial port is a low-resolution display, UniLink sets up that port as
an RS-422 port at a baud rate specified by configuration item CDU/MFD Baud Rate, options
9801 BPS or 19.2 KBS.
Other devices supported by UniLink RS-232/422 serial ports include a serial printer and
SatCom telephony functions