Section 2 System Overview
2-14
IDU-450 EFIS Software Version 8.0H (Rotorcraft)
1
st
Ed Nov 2018
Aircraft configurations are initially read from flash drive storage to provide
IDUs with a default configuration setup in the event of personality module
failure.
The personality module contains the CPU number (Table 2-2) and system
designation (pilot or co-pilot). The CPU number is identified below the part
number on the initialization screen (Figure 2-4).
Table 2-2: CPU Number Designation
CPU Number/IDU# Definition
“0”
Single-screen installation
“1”
IDU only shows PFD
“2”
First MFD in multi-screen installation
“3”
Second MFD in a multi-screen installation
“4”
Third MFD in a multi-screen installation
Aircraft parameters (latitude, longitude, altitude), as they existed prior to the
last system shutdown, are read for a good system initialization, even if
system sensors are failed or not yet initialized. For future updates (i.e.,
updating software version 8.0H to 8.0J), all aircraft settings re-initialize to
default values. Otherwise, aircraft settings, as they existed prior to the last
system shutdown, are used to initialize the system except for the following
default values:
Selected sensors are initialized to default values.
Active flight plan structure and associated values are cleared.
ADAHRS set to slaved mode, and slewing value is initialized to zero.
Timers are turned off.
Map panning modes are set to off.
Fuel caution and alarm thresholds are set to default values.
Heading bug is set to 360°.
Heading mode is turned off.
HSI navigation source is set to FMS.
Horizon Synchronization status is set to disabled.
Minimum altitude setting is turned off.
FMS OBS setting is set to automatic.
VOR/LOC 1 OBS setting is set to 360°.