Users Manual

ALL
EFFECTIVITY
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 2-20
22 Apr 2019
23-15-49
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ASPIRE-400
(1) There are 2 anticipated mutually exclusive application configurations: Standalone and
Dual Safety SATCOM.
(a) Standalone: only one SDU.
(b) Dual Safety SATCOM: 2 SDUs interconnected, but only one can be active and
logged onto safety services at any one time.
(2) If the SDU Dual System Disable (DSD) discrete is asserted, the SDU:
(a) Silently Logs off if already logged on.
(b) Disables its RF transmission.
(c) De-asserts its Dual System Select (DSS).
NOTE: This applies for all configurations.
B. Standalone Configuration
(1) In Standalone Configuration, the SDU is always the active SDU, no other SDU is
considered.
DRAFT
3rd rvw Draft as of:
29 January, 2020