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B
3.1.5
Above/Below/Normal Input
This input defines the Altitude Select for the display. Momentary (250 msec.
minimum) application of a "ground" at this input will cause a transistion
between the three states in a cyclical manner ; Normal- Below-Above. The
default mode is "Normal".
J10-71 ABV_BEL_NORM*
3.1.6
Baro Altitude (ARINC 429) Input
Baro Altitude will be input to the TAS Processor via the Baro Altitude ARINC
429 low speed input bus. This bus may also be used as an ARINC 419 low
speed input bus. The ARINC 706 Air Data Computer will interface to the TAS
Processor using the ARINC 429 input ports and the ARINC 575 Air Data
Computer will interface to the TAS Processor using the ARINC 419 input
ports.
3.1.7
Advisory Inhibit Input
The Advisory Inhibit into the TAS Processor will cause annunciations to be
inhibited when higher priority events occur (i.e., wind-shear alerts, terrain alert
warnings.)
The TAS Computer Unit will inhibit certain functions which would tend to
distract the pilot when faced with a potentially hazardous condition such as
windshear or terrain alerts. These conditions are presumed to have a more
immediate possibility and higher probability of harm than the threat of a col-
lision. Thus, TAS functions such as aural announcements and aural alerts
are to be inhibited by placing the TAS Computer Unit in a mode which
would preclude its issuing the unwanted information.
If the Advisory Inhibit has been activated, no new voice or annunciator out-
puts can be activated by the TAS computer unit during the deferment period. If
already activated, these outputs will be discontinued within 250 milliseconds.
If an advisory condition is present when the deferment is removed, it will be
annunciated.
ADVISORY INHIBIT = GROUND
NORMAL ADVISORY/ALERT = OPEN
J10-22 ADV_INHIBIT*
Rev 3, August/2001
NOTE
10609I03.CDL
KMH 880/KTA 870
Page 3- 7
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