User's Manual

Table Of Contents
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
T
3
CAS/Part No.9005000
Table 4-2: T
3
CAS Computer Unit Interface Description
(Applicable to Part No. 9005000-11801 and -55801)
Connector
Pin
Designation
Functional Description
RMP-1F
Corrective Aural Advisory Discrete Output (NO)
This aural advisory discrete output is a ground/open-type discrete (Note 3) used to
control external equipment that generate tones to accompany TCAS advisories. The
output is active whenever a corrective advisory (RA that requires a corrective
maneuver) is issued. The output remains active for the duration of the synthesized
voice unless it is cancelled by the cancel discrete at RMP-3D. Only one aural
advisory is active at a time. The corrective discrete and preventative discrete at
RMP-1K are mutually exclusive. The active state is ground and the inactive state is
open.
RMP-1G
TCAS/ADS-B Discrete Output #1 (Lamp Driver)
RMP-1H
TCAS/ADS-B Discrete Output #2 (Lamp Driver)
RMP-1J
Climb Inhibit No.1 Discrete Input (NO)
This input is a ground/open-type discrete used to provide information to the T
3
CAS
CU whether to assume the aircraft cannot achieve a climb rate of 1500 FPM (457.2
m/min). The climb inhibit discrete inputs are designed in pairs (No.1 and No.2 at
RMP-13G, or No.3 at RBP-5J and No.4 at RBP-5K) but can be wired as a single
input or in conjunction with other aircraft operations to achieve airframe
customization of the climb inhibit feature. The 1500 FPM (457.2 m/min) climb inhibit
function is assumed whenever No.1 and No.2 are ground or No.3 and No.4 are
ground.
See Note 1 for Ground/Open type discrete input definition.
RMP-1K
Preventive Aural Advisory Discrete Output (NO)
Same as RMP-1F, except this discrete is active whenever a preventative advisory
(RA that directs the flight crew to avoid certain maneuvers or maintain flight path) is
issued.
RMP-2A
Traffic Aural Advisory Discrete Output (NO)
Same as RMP-1F, except this discrete is active during a traffic advisory when
information is being given to the flight crew regarding other aircraft in the immediate
vicinity. No suggested maneuver is issued. This output is inhibited if either the
corrective or preventative output is active.
RMP-2E
TCAS/ADS-B Discrete Output #3 (Lamp Driver)
RMP-2F,2G
8-Ohm Audio Output: (RMP-2F [HI], RMP-2G [LO])
This is a synthesized voice output supplied by the TCAS computer unit. Its level is
programmable up to 8 W into an 8-ohm speaker. All aural traffic and resolution
advisories are announced over this output. See RBP-7A for audio level
programming.
4-46
04 Nov 2014
34-45-29
Pub. No. 8600200-001, Revision 004
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