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as a result of several events: loss of power to the MC, DMC, or AMU, operator aborts, or inadvertent
transfers out of AMU relay mode.
If the AMU experiences a power loss greater than five seconds, or if the DMC experiences a power
loss of any duration, or if the operator initiates an abort, the interruption in the loading process results
in a nonrecoverable abort and the load process cannot be recovered without reloading all the cards.
If power is reapplied to the AMU within five seconds, then the load process can be recovered with
minimum impacts. Once the operator reselects the map loading format, the status of the load prior to
the interruption is reflected on the format status fields. If a card was in the process of being loaded
when the interruption occurred, its status is blank indicating it has not been loaded. Selecting the
LOAD option reinitializes the load process following this type of interruption.
2.19.7 AMU/PC Cards Cautions and Advisories. The AMU has the ability to trigger three caution
and five advisory messages. The caution messages are: MU LOAD, ERASE FAIL, and S/W CONFIG.
The advisory messages are: Maintenance Card Advisory (MNTCD), Mission Card Advisory (MSNCD),
Classified Data Advisory (CDATA), AMU Full advisory (AMU FL), and the BIT advisory.
The MU LOAD caution is generated when the AMU door is open; if the AMU fails; if the AMU
declares a card interface fail; if the AMU is mux fail or not ready; if the mission card is improperly
formatted, not installed, or is declared failed by the AMU, if the initialization data is not downloaded,
if an incorrect checksum is calculated. The MU LOAD caution is disabled while the AMU is in relay
mode or the aircraft is in flight.
The ERASE FAIL caution is generated when the AMU has failed to erase its internal RAM memory
buffer following a classified data transfer.
The S/W CONFIG caution is generated if the AMU and MC software are not compatible. When an
AMU OFP checksum failure occurs, the AMU OFP software configuration ID displayed on the S/W
configuration BIT sublevel format indicates XXXXXXXX.
The MNTCD advisory is generated when the AMU door is open, if the maintenance card is not
installed or properly formatted, or if the AMU declares a maintenance card failure. The advisory only
displays with WonW and clears in flight.
The BIT advisory is generated when the AMU is degraded or an AMU RAM classified erase failure
occurs.
The CDATA advisory is generated when the mission card contains classified data. It is removed
when a successful classified data erase of all avionics has been performed, or a successful classified data
erase of all avionics except the mission card is performed and the ERASE (MU HOLD) option has been
selected on the MUMI format.
A1-F18EA-NFM-000
I-2-156 ORIGINAL
The MU FL advisory used for the existing MU is changed for the AMU. The MU FL advisory
indicates a data wraparound has occurred on the maintenance card and the corresponding MSP code
(809) is set. When the MC determines there is not enough memory on the maintenance card to perform
the next sequential write operation, it begins overwriting previously recorded data.
DFIRS data download requests do not cause a data wraparound to occur. If there is insufficient
memory available, based on the current sequential write address pointer, the DFIRS data download
request is not executed.
2.20 COUNTERMEASURES DISPENSING SYSTEM
2.20.1 ALE-47 Countermeasures Dispensing Set. The ALE-47 countermeasures dispensing set can
be manually actuated or can use information from various Electronic Warfare (EW) systems to
generate countermeasures dispensing programs. Refer to A1-F18EA-TAC series for details on ALE-47
operation and displays.
2.20.1.1 DISPENSER Switch. The DISPENSER switch, located on the center pedestal, is used to
control power to the ALE-47 system and to enable the BYPASS dispensing mode.
BYPASS Selects the BYPASS mode for ALE-47 operation.
ON Powers ALE-47. Enables the ALE-47 sublevel on the EW format.
OFF ALE-47 off.
2.20.1.2 ALE-47 Advisories. The D LOW advisory is displayed when expendable loadouts drop to the
BINGO level set on the ALE-47 sublevel of the EW format. The D BAD advisory is displayed when a
dispense misfire occurs.
2.20.2 ALE-50 Decoy Dispensing Set. The ALE-50 decoy dispensing set provides an expendable
towed RF countermeasures capability. The system includes a multi-platform launch controller
(MPLC) and a removable dispenser with three expendable decoys. Refer to A1-F18EA-TAC series for
details on ALE-50 operation and displays.
2.20.2.1 JAMMER Switch. The JAMMER switch, located on the center pedestal, is used to control
power to the ALE-50 system and to provide a secondary means to sever a deployed towline.
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本文链接地址：
NATOPS Flight Manual 飞行手册 1(112)
