Installation; Hpa/Sdu Installation; Scm Installation; Design And Construction - Honeywell ASPIRE-400 System Description, Installation And Maintenance Manual

SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
1. Mechanical Installation (TASK 23-15-49)
A.

HPA/SDU Installation

(1) The HPA and SDU are 2 MCU form compliant. They are for installation in an equipment
rack, in close proximity to each other and with the expectation of external air cooling. RF
and control between the SDU and the HPA is supported by dedicated interfaces.
Installation cable losses and DLNA losses limits the reach capability to the antenna.
B.

SCM Installation

(1) The SCM is mounted using the chassis bonding surface and connected to the SDU using
a 15 position D-Sub connector.
C.

Design and Construction

(1) Reliability and Maintainability
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
D.

Miscellaneous

(1) Warning
(a)
EFFECTIVITY
ALL
© Honeywell International Inc. Do not copy without express permission of Honeywell.
ASPIRE-400
SECTION 4 – INSTALLATION
The components do not require scheduled maintenance to remain operational
under normal operating conditions.
NOTE: PIMBIT is not considered scheduled maintenance
The failure rate for loss of SATCOM communication is less than 9.376E-5 per
FH.
There is no scheduled maintenance with the exception of INMARSAT required
scheduled activities such as PIMBIT.
There is a failure rate of less than 2.5E-6 per FH on all input power bus
components that are not protected though short circuit topology.
There is a failure rate of less than 2.5E-8 per FH on each ARINC 429 receive
interface resulting in loading of the ARINC 429 bus.
The probability of undetected single event upsets is less than 7.0E-4 per FH
The SDU is ruggedized against Single/Multiple Event Upset.
NOTES: The Implementation can employ any combination of:
1 Redundant memory,
2 Error correcting hardware memory,
3 Software correction encoding or
4 Other suitable techniques.
Recommend selection of memory types proven to be more robust against Single
Event Upset (SEU). Non-volatile memory used to retain Event and Fault Logs is
not required to be robust to Single Event Upset.
The components have a label with a triangular Electrostatic Sensitive Devices
caution symbol with bold upper case letters.
NOTE: An acceptable phrasing is found in ATA 300, Chapter 6:
23-15-49
3rd rvw Draft as of:
29 January, 2020
Page 4-1
22 Apr 2019