User's Manual

UL-801 Installation Manual
Page 17
23-20-06 15 December 2011
G. Configuration Module
The configuration module, an electrically erasable, programmable read-only memory
(EEPROM) device, is mounted on the rear of the mounting tray and connected via a
dedicated interface to the UniLink. The configuration module stores information specific to
the installation.
The user can view and retrieve the aircraft configuration through specially designed pages
that can be accessed through the keypad on the CDU or MCDU. The UniLink retrieves the
configuration data during each power up cycle. Modifications to the configuration are
possible only on the ground and are restricted through software interlocks.
H. ARINC 429 Channels
UniLink provides sixteen ARINC 429 receivers and eight ARINC 429 transmitters.
(1) ARINC 429 Receivers
The sixteen ARINC 429 receivers can be independently configured for supported
ARINC devices. The receiver bus speed (high or low) is determined by the ARINC
device selected during configuration.
(2) ARINC 429 Transmitters
ARINC 429 transmitter, Port #1, is set to low speed by default. The remaining seven
ARINC 429 transmitters can be independently configured for bus speed (high or
low). Multiple ARINC devices of the same bus speed can be connected in parallel by
each transmitter configuration selection. Do not exceed 15 receive devices on one
ARINC transmitter port.
Device UniLink TX Speed (NOTE 1) UniLink RX Speed
UASC FMS/CDU 1 LOW HIGH
UASC FMS/CDU 2 LOW HIGH
UASC FMS/CDU 3 LOW HIGH
739 MCDU 1 LOW LOW
739 MCDU 2 LOW LOW
739 MCDU 3 LOW LOW
702 FMS 1 LOW or HIGH NOTE 2
702 FMS 2 LOW or HIGH NOTE 2
702 FMS 3 LOW or HIGH NOTE 2
740/744/744A Printer LOW LOW
741 SDU LOW LOW
Voice Tune Bus NOTE 6 LOW Not Applicable
Vibro-Meter CMC LOW HIGH
604 CMC LOW LOW
750 VDR NOTE 6 HIGH HIGH
DHC8 IOP 1 Not Applicable LOW
DHC8 IOP 2 Not Applicable LOW