Scm Modes Of Operations; Sdu Configuration & Test Mode; Satcom System Configuration & Test Mode; Overview - Honeywell ASPIRE-400 System Description, Installation And Maintenance Manual

SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
(7) When the ORT indicates the external power amplifier supports cable calibration, the ACD
automatically determines at an unspecified cable loss of between 0 to 18 dB, on a normal
ground power on, storing its value in non-volatile memory for use under rapid restart
condition.
NOTE:
(8) When the ORT explicitly provides a cable loss between the SDU and the Power Amplifier
the ACD uses this value to set the SDU transmit level.
(9) If there is a loss of gain in the RF path that results in insufficient power to hold all
services, the ACD reduces services on the non-safety channel card in order to preserve
safety channel card services.
(10) There is no need to log on as a different class when power is below 7 dBi. There is no
advantage of partially shutting down services on a channel card as there is no means to
save power.
15.

SCM Modes of Operations

A. SDU Configuration & Test Mode
(1) The SDU Configuration and Test Mode is entered when ACD Application code begins
executing. No User services are available as Application Mode has not yet been
selected. The SDU Configuration and Test Mode includes:
(a)
(b)
(c)
(d)
B. SATCOM System Configuration & Test Mode
(1) The SATCOM System Configuration and Test Mode covers the testing of the entire
SATCOM including the external PA and antenna functions. Depending on the
configuration the LRU that provides the PA function. The SDU enters SATCOM System
Configuration and Test Mode on successful completion of SDU Configuration mode
activities.
(2) The SATCOM System Configuration and Test Mode includes:
(a)
(b)
(c)
(d)
(e)
16. Safety Data Services (TASK 23-15-49)
A.

Overview

(1) Safety Data services include Air Traffic Services (ATS) and Airline Operational Control
(AOC) datalink messages. ACARS data services are supported for SBB safety.
B.

AAP Protocol and Supported Services

EFFECTIVITY
ALL
© Honeywell International Inc. Do not copy without express permission of Honeywell.
ASPIRE-400
The loss range indicated is at 1.6 GHz, but this does not imply that this 1.6
GHz is used for cable calibration.
ORT and license validation
Configuring the SDU based upon strapping, ORT settings and licenses.
Executing SDU startup and invasive tests.
Transitioning to data load mode if a data load is in progress.
Validating correct communications with external SATCOM LRUs.
Retrieving external SATCOM LRU configuration data.
Validating that the HPA and antenna functions align with the SATCOM LRU
configurations indicated in the ORT.
Optionally calculating cable losses (cable calibration).
Optionally executing system invasive tests.
23-15-49
3rd rvw Draft as of:
29 January, 2020
Page 2-40
22 Apr 2019