User's Manual

SYSTEM DESCRIPTION AND INSTALLATION MANUAL
T
3
CAS/Part No.9005000
(d) Mode Control Selector Switch
The rotary switch labeled STBY-ALT RPTG OFF-XPDR-TA ONLY-
TA/RA allows the operator to activate the TCAS system by selecting TA,
or traffic and resolution advisory (TA/RA). When STBY is selected, both
transponders are selected inactive or in standby mode. Altitude reporting
off (ALT RPTG OFF) selection disables the altitude data sources
interrupting transmission of aircraft altitude and location information to
ground controllers and causes a TCAS OFF annunciation on the
VSI/TRA.
(e) ABV/N/BLW Switch
The ABV/N/BLW switch selects an altitude range (from aircraft) for traffic
display on the TCAS displays. Range limits for software versions prior to
Change 7 are 7000 feet (2133.6 meters) above and 2700 feet (822.96
meters) below the aircraft when in ABV mode and 2700 feet (822.96
meters) above and 7000 feet (2133.6 meters) below the aircraft when in
BLW mode. Range limits for the Change 7 software version are 9900
feet (3,017.52 meters) above and 2700 feet below the aircraft when in
ABV mode and 2700 feet (822.96 meters) above and 9900 feet (3,017.5
meters) below the aircraft when in BLW mode. When the normal (N)
position is selected, the display range is 2700 feet (822.96 meters)
above and below the aircraft.
(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 nearby 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 (NMI) traffic advisory horizontal range
displays.
(h) IDENT Key
The IDENT key is a momentary button. Upon activation, the Special
Position Identifier (SPI) pulse shall be transmitted to ground controllers,
in accordance with ARINC 718 Draft 5 of Supplement 4, when replying to
ATRCRBS Mode A or Mode S UF-4 and UF-5 interrogations for a period
of 18 ±1 seconds. The SPI pulse can be reinitiated at any time.
(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.
In the event of a TA or RA, the Flight Level will automatically revert back
to the relative mode.
Pub. No. 8600200-001, Revision 004
34-45-29
1-67
04 Nov 2014
Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.