BOMBARDIER BD-100-1A10, Operating Manual

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AURAL/VISUAL ALERTS
Sep 13/2004 Flight Crew Operating Manual Volume 2
REV 1 CSP 100-6
03-02-11
INTEGRATED AVIONICS PROCESSOR SYSTEM (IAPS)
DESCRIPTION
The integrated avionics processor system (IAPS) is a physical collection of functional modules combined into an efficient
mechanical package to minimize size, weight, and aircraft wiring, and to improve system reliability and maintainability.
The IAPS independently transmits signals more than once, and each part has independent power. The IAPS also reads some
avionics busses and sends data words to the LRUs that use that data. The IAPS performs ARINC data processing
and distribution for avionics LRUs.
The IAPS consists of various functional units. The input/output concentrator units (IOCs) get data words and transmit them
to the correct LRU. The IAPS power supplies energize the IOCs. The IAPS environmental controller (IEC) monitors the
housing temperature and controls the fans. The control strapping units (CSUs) and the options control modules (OCMs)
set the IAPS strap settings.
The maintenance diagnostic computer (MDC), the flight management computers (FMCs), and the flight guidance comput-
ers (FGCs) are in the IAPS card cage (ICC), but they are not part of the IAPS itself.
Their are no pilot-controlled operations required for the IAPS. Their are no pilot-controlled reversionary operations for the
IAPS.
COMPONENTS AND OPERATION
INTEGRATED AVIONICS PROCESSOR SYSTEM CARD CAGE
The IAPS card cage is the housing that contains all the components of the IAPS. The ICC is in the right equipment rack.
INPUT/OUTPUT CONCENTRATOR UNIT
The IAPS data receives from and transmits to many external systems. External system data is transmitted through the ICC
circuit card.
The two input/output concentrator units transmit data to other LRUs related to their operation. The IOCs transmit all the
display data from other LRUs to the displays.
INTEGRATED AVIONICS PROCESSOR SYSTEM POWER SUPPLY
The IAPS has an input from the 28 vdc main busses. The voltage is filtered and applied to the IAPS power supplies. The
two power supplies independently supply the applicable voltages to the necessary units in the IAPS. The No. 1 power sup-
ply energizes the No. 1 FGC, FMC, and IOC No. 1. The No. 2 power supply energizes the No. 2 FGC, FMC, MDC, and
IOC unit No. 2.
INTEGRATED AVIONICS PROCESSOR SYSTEM ENVIRONMENTAL CONTROLLER (IEC)
The IEC controls the temperature for the ICC. The IEC monitors a pair of ICC temperature sensors and operates fans
to control the IAPS environment in each half of the IAPS.
The IEC has a power supply, two thermostats, two transducer monitor circuits, a two-speed fan, and a heat exchanger.
REV 1