L3 Technologies AFIRS228S0 Manual Do Utilizador
Fault Name
BIT Check
Raise Fault/Failure Condition
Clear Fault/Failure
Condition
System
ISVM
ISDM
GPS
Operable
SDU
SCM
A717
INACTIVE
ARINC
573/717
Receiver
Inactive Fault
The “ARINC 573/717 Receiver fault
will be raised if the ARINC 573/717
is configured Active data and the
data is not present.
The ARINC 573/717
Receiver Fault will be cleared
if ARINC 573/717 data
resumes.
Yes OK OK
Verify ARINC 573/717
data.
Comment
L-3 Iridium SATCOM System - Built-in Test and Fault Indicators
EXTERNAL CHECKS
Indicator Description
LED Off
Fault/Event
Fault Light
Discrete Output
ON OFF
Operational,
No Failure/Fault
Critical Failure
Front Panel LEDs
MCDU Indicators
NO GPS LINK
GPS Link
Status
The “GPS Link Status” will be
raised if the internal GPS is
configured as Active and the GPS
R
i
t
i
ti
The “GPS Link Status” will be
cleared if the GPS Receiver
reports a navigation solution
Yes OK OK
GPS not available, Link
should reestablish within a
few minutes. If link does
not reestablish within 20
minute period, replace
Status
Receiver reports no navigation
solution for 5 seconds in a row.
reports a navigation solution
for 5 seconds in a row.
minute period, replace
SDU. If still present verify
Iridium/GPS antenna and
cable.
NO ISVM LINK
ISVM Link
Status
The “ISVM Link Status” will be
raised if the ISVM driver reports no
link.
The “ISVM Link Status” will
be cleared if the ISVM driver
reports a link for 5 seconds in
a row.
Yes OK OK
Voice communications not
available. Link should
reestablish within a few
minutes.
NO ISDM LINK
ISDM Link
Status
The “ISDM Link Status” will be
raised if the ISDM driver reports no
link.
The “ISDM Link Status” will
be cleared if the ISDM driver
reports a link for 5 seconds in
a row.
Yes OK OK
Data communications not
available. Link should
reestablish within a few
minutes.
NO DTP
SOURCE
Date, Time,
Position
Source Status
The “DTP Source Status” will be
raised if DTP 1 interface, DTP 2
interface, DTP 3 interface, and
internal GPS are all not providing
valid data.
The “DTP Source Status” will
be cleared if at least one of
DTP 1 interface, DTP 2
interface, DTP 3 interface, or
internal GPS is providing
valid data.
Yes
OK
OK
Verify DTP source.
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