Self Test - Honeywell ASPIRE-400 System Description, Installation And Maintenance Manual

SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
(c)
(7) The HPA continuously monitors the integrity of the software resident area of ROM.
(8) If the integrity of the software area of ROM is detected and confirmed as compromised
then the following occurs for as long as the ROM is compromised:
(a)
(b)
(c)
(d)
(9) If the integrity of the software area of ROM is not compromised then the state of
indication of "Internal ROM Integrity" in ARINC-429 label 350 HPA Maintenance word for
the current ARINC-429 reporting interval is "No ROM Fault". Accordingly, the Reset
Reason register "ROM Fault" remains cleared and the Red Fault LED is not used to
annunciate a ROM fault condition.
(10) The HPA continuously monitors the integrity of the operational RAM
(11) If the integrity of operational RAM is detected and confirmed as compromised then the
following occurs for as long as the RAM is compromised:
(a)
(b)
(c)
(d)
(12) If the integrity of operational RAM is not compromised then the state of indication of
"Internal RAM Integrity" in ARINC-429 label 350 HPA Maintenance word for the current
ARINC-429 reporting interval is "No RAM Fault". Accordingly, the Reset Reason register
"RAM Fault" remains cleared and the Red LED is not used to annunciate a RAM fault
condition.
B.

Self Test

(1) Functional Test is a SSM annunciation condition of the ARINC-429 reported words and
an annunciation pattern condition for the front panel LEDs. SSM = FT denotes that an
Off-line self-test is in progress and the HPA is out-of-service. Off- line tests are an integral
part of Power-On/Initialization/Reset Recovery and may also be command evoked by
ARINC- 429 received words or Maintenance user initiation.
(2) The primary function of RF Power Amplification is suspended during Self- Test thereby
enabling invasive tests to be considered however tests dependent on PA function being
enabled will not be possible. Awareness and interaction to other AES system
components is maintained.
EFFECTIVITY
ALL
© Honeywell International Inc. Do not copy without express permission of Honeywell.
ASPIRE-400
Forces a software reset.
The state of indication of "Internal ROM Integrity" in ARINC-429 label 350 HPA
Maintenance word is declared as "ROM Fault"
"Failure Warning" is identified as a ARINC-429 word SSM reportable condition of
the HPA
While "Failure Warning" persists as the ARINC-429 word reportable condition for
the SSM then the RED LED is illuminated.
Reset Reason register "ROM Fault" detected is latched for use in reset recovery.
NOTE: Confirmed as compromised implies remedial actions were
unsuccessful.
The state of indication of "Internal RAM Integrity" in ARINC-429 label 350 HPA
Maintenance word is declared as "RAM Fault"
"Failure Warning" is identified as a ARINC-429 word SSM reportable condition of
the HPA
While "Failure Warning" persists as the ARINC-429 word reportable condition for
the SSM then the RED LED is illuminated.
Reset Register "RAM Fault" detected should also be latched for use in reset
recovery.
23-15-49
3rd rvw Draft as of:
29 January, 2020
Page 2-14
22 Apr 2019