Embraer EMB145 Operation Manual page 2193

AIR DATA SYSTEM (ADS)
The Air Data Systems are designed for sensing, processing, and
transmitting air data information to various systems and instruments of
the airplane.
The ADS 1 (LH) consists of one Air Data Computer (ADC), one Pitot
Tube, one Total Air Temperature Probe (TAT) and two Static Ports.
The ADS 2 (RH) consists of one Air Data Computer (ADC), one Pitot
Tube, one Total Air Temperature Probe (TAT) and two Static Ports.
The Standby System consists of one Pitot/Static Tube, one Standby
Altimeter and one Standby Airpeed Indicator.
The Pitot and Pitot/Static tubes, TAT probes and Static Ports are
heated for anti-icing purposes. For further information about the anti-
icing system, refer to Section 2-15, Ice and Rain Protection.
The ADSs 1 and 2 interface with the airplane's systems through the
ADCs, as follows:
− IC-600 - Both ADCs supply pressure altitude, barometrically
corrected altitude, true airspeed, calibrated airspeed, vertical
speed, Mach number, static air temperature, V
temperature to both IC-600.
− FADEC - The ADC 1 supplies the FADEC 1A and 2A, and the
ADC 2 supplies the FADEC 1B and 2B with total pressure, Mach
number, and total air temperature.
− HSCU - The ADCs provide calibrated airspeed for the HSCUs.
− TRANSPONDER - Both ADCs provide pressure altitude
information for both transponders/TCAS.
− AHRS (AH-900 only) - The ADC 1 supplies AHRS 1 and ADC 2
supplies AHRS 2 with true airspeed.
− FMS - The ADC 1 provides true airspeed for the FMS.
− WEATHER RADAR - The ADC 2 provides altitude data for the
weather radar.
− SPS - Both ADCs provide Mach number information for the Stall
Protection System.
− GPWS - The ADC 1 provides airspeed (CAS and TAS), altitude,
and vertical speed information for the GPWS.
REVISION 28
AIRPLANE
OPERATIONS
MANUAL
FLIGHT
INSTRUMENTS
and total air
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