Embraer EMB145, Operation Manual

Page: 2611 / 2662

AIRPLANE
OPERATIONS
MANUAL
NAVIGATION AND
COMMUNICATION
REVISION 38
2-18-80
Page
7
Code
01
A
O
M-145/1
114
TCAS TA: This TCAS control function enables TA operation
only. The TA ONLY Mode-S enables the TCAS
computer, in conjunction with the Mode S/IFF
transponder, to provide traffic advisories. The TA
Mode is electrically tied to the Mode S enable (ON)
mode. The system automatically selects this mode
when the airplane is flying under 1000 feet above
ground level.
TCAS TA/RA: The TCAS TA/RA Mode S enables the TCAS
computer, in conjunction with the mode-S/IFF
transponder, to provide traffic and resolution
advisories. TA/RA is electrically tied to the Mode S
enable (ON) mode. This is the normal operation
mode, supplying full TCAS coverage.
8 - CODE ENTRY KEYPAD
There are 12 push-button keys in the keypad.
9 - TCAS HORIZONTAL RANGE ROTARY KNOB
The TCAS range control allows the pilot to select traffic advisory
horizontal display range in nautical miles. This control function gives
the pilot the option of selecting four possible ranges: 6, 12, 20, 40 NM.
10 - TCAS VERTICAL RANGE ROTARY KNOB
This knob provides the operator with the capability to select an altitude
range, in relation to the airplane, for traffic display on the MFD.
ABV Mode: Range limits are 9900 ft above and 2700 ft below
airplane.
BLW Mode: Range limits are 9900 ft below and 2700 ft above
airplane.
NORM Mode: The display range is 2700 ft above and below the
airplane.
NOTE: If the TCAS does not receive the altitude limit information from
the transponder, the default altitude limit presented will be
7000 ft instead of 9900 ft.