User's Manual Part 1

CAS / Part No. 9000000

SYSTEM DESCRIPTION AND INSTALLATION MANUAL

34-43-20

15 Feb 2003

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(b) ATC Code Selection

The ATC four digit code is selected with two dual concentric sets of knobs. Each

knob is dedicated to a single liquid crystal display (LCD) digit on the LCD code

display. The two smaller knobs control the inner digits of the LCD (tens and

hundreds) while the two larger knobs control the outer most digits (units and

thousands).

The XPDR switch is a two position switch that allows the selection of one

Mode -- S module in the control panel, and the activation of its associated

transponder (System 1 or System 2).

(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.

(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 above and 2700 feet below the aircraft when in ABV mode and 2700

feet above and 7000 below the aircraft when in BLW mode. Range limits for the

Change 7 software version are 9900 feet above and 2700 feet below the aircraft

when in ABV mode and 2700 feet above and 9900 below the aircraft when in

BLW mode. When the normal (N) positio n is selected, the display range is 2700

feet 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 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.