User's Manual

UL-801 Installation Manual
Page 22
23-20-06 15 December 2011
K. Ethernet
The UASC DTU-100/SSDTU physical interface is 10BaseT Ethernet. The UniLink hardware
contains a 10/100BaseT Ethernet port. All UniLink interfaces to the UASC DTU-100 can be
directly applied to the UASC SSDTU without any modifications to the UniLink.
L. Transmission Media Management
UniLink is capable of managing multiple links (VHF, TEL, and SAT) so that simultaneous
transmission and receipt of messages is possible on several different links. UniLink provides
individual management of the VDR radio and satellite communications equipment.
VHF Digital Link (VDL) Mode 2 Capability
The internal VDR is capable of supporting both the D8PSK modulation of the VDL Mode 2
channel and the current ACARS MSK modulation of the POA ACARS channel (which is
used when the aircraft is outside of the VDL Mode 2 coverage area) or directed by the DSP.
POA, in conjunction with VDL Mode 2, supports the Future Air Navigation System (FANS)
applications that include ATS Facilities Notification (AFN), Controller-Pilot Datalink
Communications (CPDLC), and Automatic Dependent Surveillance-Contract (ADS-C).
The aircraft’s 24-bit International Civil Aviation Organization (ICAO) address is required for
VDL Mode 2 communications. This address is obtained from the selected DSP and is entered
during the configuration process and is stored in the configuration module.