Table 3C-100. Subsystem Status Page
The status annunciation indicates that a
failure has occurred.
Press to access the FMS status page.
The status is cleared when FMS Status
page is accessed. It can also be cleared
with the CLR function key while on other
Vertically scroll to access navigation
sensor and navigation radio status pages.
(4) Individual LRU Detailed Status Pages.
The results of CBIT's by each LRU is displayed on the
respective detailed status pages which are accessed
by pressing the line select key adjacent to the
respective LRU display on the status page. Unknown
status (i.e., bus controller is unable to communicate
with a LRU) is indicated by dashes in the top-level
status field. A failure counter is provided on all
detailed status pages to indicate the total number of
hardware and MIL-STD-1553B data bus failures.
Status monitoring may be disabled for any LRU on its
individual status pages (for example, if an intermittent
failure is causing nuisance alerts). This prohibits the
STATUS annunciation from being displayed and the
CDU alert or MSG annunciation from being activated
for LRU failures. All status-monitoring results continue
to be displayed on the detailed status page. The state
of this selection is always reset to enable reporting on
power up. Refer to Figure 3C-139 and Table 3C-101.
The definition of each LRU status indication is
provided in Table 3C-102. Bit definition is read from
left (bit 1) to right (bit 16) on each status page. A 1
indicates a failure condition.
Figure 3C-139. Detailed CDU Status Page
Table 3C-101. Detailed CDU Status Page Procedure
Indicates the total number of failures since last reset of failure counter.
Resets failure counter to 0.
Indicates overall CDU status: GO, NGO, TST, or ---.
Returns to the FMS status page.
Indicates if CDU is either BC (bus controller) or RT (remote terminal).
CBIT word, detailing LRU failures, reads left-to-right and 1 indicates a failure.
FMB bus status: GO, NGO-A (bus A failed), NGO-B (bus B failed), NGO-T (terminal
failure or both bus A and B failed)
Enables (ON) or disables (OFF) reporting of status monitoring annunciations.