User's Manual

SYSTEM DESCRIPTION AND INSTALLATION MANUAL
TCAS 3000 Traffic Alert and Collision Avoidance System
34−43−23
Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
Page 1−30
15 Dec 2005
(d) XPDR − Selector Switch (Dual Mode S Versions Only)
Selects the transponder, 1 or 2, that is used for reporting replies.
(e) TA DSPLY − OFF, AUTO, ON
Controls the operation of the navigation or traffic advisory display for a TCAS
system.
(f) TCAS TEST − Button
Used to select the TCAS system self−test function.
(g) IDENT − Button
When pushed, this button causes an ATCRBS reply, or Mode S UF−4 and UF−5
replies, to contain a special identifier pulse (SPI) as an identifier to the ground
according to ARINC 718−A Draft 5 of Supplement 4.
(h) 4096 Ident Code − Dual Concentric Rotary Knobs
Each rotary switch is used to set each individual digit of the four−digit ident code.
The left inner knob selects the thousands digit, left outer knob selects the
hundreds digit, right inner knob selects the tens digit, and the right outer knob
selects the ones digit.
D. Gables ATC/TCAS Dual Mode S Transponder Control Panel
The Gables ATC/TCAS Mode S control panel is used to independently control two Mode
S transponders, and to interface with a Mode S installation with TCAS capabilities.
The control panel contains two isolated electronic modules each dedicated to a given
transponder. Each module derives its input ATC code data from two dual concentric
knobs. The selected code is then displayed on a four digit Liquid Crystal Display (LCD),
and subsequently transmitted to each transponder.
Figure 1−11 shows a typical front panel layout of a Gables G7130 series control panel.
Table 1−8 gives items and specifications that are particular to these units.
ID−53838−R2