Honeywell ASPIRE-400 System Description, Installation And Maintenance Manual page 56

SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
(3) The SATCOM Avionics Suite consists of two L-Band SATCOM systems. The left
SATCOM system identified as SDU1 will operate on the Iridium network and the right
SATCOM system identified as SDU2 will operate on the Inmarsat network.
(4) Determination of the active and standby system is determined either by the crew or by an
Aircraft algorithm outside the SATCOM. The remainder of this document focuses on the
Inmarsat portion of the SATCOM avionics suite. The Inmarsat avionics equipment
consists of an Aspire 400 Satellite Data Unit (SDU), the Aspire 400 SDU Configuration
Module (SCM), and Aspire 400 High Power Amplifier (HPA) installed in the crown area,
together forming the 6F transceiver. A Type F DLNA and HGA complete the AES.
EFFECTIVITY
ALL
© Honeywell International Inc. Do not copy without express permission of Honeywell.
ASPIRE-400
23-15-49
3rd rvw Draft as of:
29 January, 2020
Page 1-14
22 Apr 2019