ALL
EFFECTIVITY
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 2-3
22 Apr 2019
23-15-49
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ASPIRE-400
B.
RF Safe Mode
(1)
In RF Safe Mode, the RF output of the system is disabled because a significant system
configuration problem has been detected. Safe Mode does permit other interactions with
the equipment to allow the condition (e.g. loading a missing ORT) to be remedied. Even
once the problem has been remedied, normal operation can only be achieved by a reset
where the conditions are no longer present.
(2)
The SDU enters RF Safe Mode for any of the following conditions:
(a)
SDU configuration missing including missing license keys for any selected ORT
features that require a license
(b)
SDU configuration incomplete
(c)
SDU configuration discrepancy or corruption
(d)
SATCOM LRU configuration discrepancy (antenna or PA type mismatch).
(3)
Upon entry into RF Safe Mode, the SDU keeps the RF carrier off.
(4)
When in Safe Mode, the SDU indicates its inability to provide data and voice services on
the following interfaces which are able to be activated:
(a)
Pilot control and display
(b)
CMU.
(5)
In RF Safe Mode, the SDU reports status to the following maintenance interfaces:
(a)
Web GUI
(b)
CFDS.
(6)
In RF Safe Mode, the SDU retains the capability to enter into Data Load Mode and
perform maintenance functions necessary to determine the reason for entry into RF Safe
Mode.
3.
HPA Modes of Operations
A.
General
(1)
The HPA operates as a means of transmitting RF signal between the SDU and antenna.
(2)
The HPA supports the following modes:
(a)
L-band Tx RF Power Amplification
(b)
Processor RF Power Management and Diagnostics.
DRAFT
3rd rvw Draft as of:
29 January, 2020
Summary of Contents for 90402651-000
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