User's Manual

SYSTEM DESCRIPTION AND INSTALLATION MANUAL
TCAS 3000 Traffic Alert and Collision Avoidance System
34−43−23
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Page 1−33
15 Dec 2005
(f) Traffic Display Switch
The TRAFFIC AUTO−MAN switch is a two position rotary switch that controls the
TCAS traffic display mode of operation. When the AUTO mode is selected, the
TCAS computer sets the TCAS displays to pop−up mode under a
traffic/resolution advisory condition. If the MAN mode is selected, then the TCAS
displays will be constantly activated advising of any near by traffic detected
within the horizontal and vertical range limits.
(g) Range Switch
The RANGE switch is a four or six position rotary switch used to select among
different nautical mile (NM) traffic advisory horizontal range displays.
(h) IDENT Key
The IDENT key is a momentary button. When pushed, the IDENT key causes
an ATCRBS reply or Mode S UF−4 and UF−5 replies to contain a special pulse
identifier pulse (SPI) as an identifier to be transmitted to ground controllers in
accordance with ARINC 718−A Draft 5 of Supplement 4.
(i) Flight Level Button
The FL button is a momentary button used to select between relative and
absolute altitude information. When absolute is selected, this mode is enabled
for approximately 20 seconds and then reverts back to relative.
(j) Test Button
The TEST button enables the user to initiate a system functional test. When the
TEST button is pushed, the control panel initiates an internal test while a
functional test output is also transmitted through ARINC 429 labels.
When installed with a TCAS system, an extended test can be initiated by
continuously pushing the TEST button for at least eight seconds.
(k) XPNDR FAIL Annunciator
The XPNDR FAIL annunciator displays the functional status of the active
transponder. The fail annunciator lights only when a failed transponder is
selected on the XPNDR 1−2 switch.
(l) FID Switch
The Keypad is used to create or enter the Flight ID for output by the transponder.
The display will show the Flight ID code that has been entered by the crew. The
FID light will illuminate when in this mode.
When FID mode is selected, all keys are active. The active keys are used to
create the Aircraft Flight ID code for transmission to ATC.