User guide

FPD 500 FLAT PANEL DISPLAY SYSTEM
1. INTRODUCTION
This Operator’s Manual is for the
AlliedSignal Electronics &
Avionics Systems (EAS) Flat
Panel Active Matrix Liquid Crystal
Display (LCD) version of the 5ATI
Attitude Director Indicator (ADI)
and Horizontal Situation Indicator
(HSI) configured for the B727.
Throughout this document, the
terms “ADI” and “HSI” are used to
identify the two primary functions
of the indicator even though the
indicator itself is more correctly
identified as an EADI/EHSI
(Electronic ADI or HSI).
The intended use of the ADI/HSI
Flat Panel Indicator (FPI) is to
display the aircraft's primary atti-
tude (ADI) and to display course,
heading, glideslope, etc. (HSI).
The indicator replaces electro-
mechanical ADI and HSI indica-
tors with Active Matrix LCD tech-
nology. A single indicator (herein
referred to as the "ADI/HSI") can
provide the capability to function
as either an Attitude Direction
Indicator (ADI) or a Horizontal
Situation Indicator (HSI) depend-
ing on configuration strap set-
tings.
Reversionary mode capability is also provided so that during normal
operation, in the event of a failed ADI or HSI, the other FPI has the
capability to assume the function of both in the “Integrate” mode.
Reversionary mode data is hard wired into each ADI and HSI as
much as possible. Reversionary mode is discussed in more detail
later in this document.
Introduction
1-1
Rev. 0
Dec/97
a
N
M
R
I
DIM
TEST
BRT
F
S
DH
10
2020
10
1010
2020
GS
Figure 1-1
EADI Approach Display
N
M
R
I
DIM
TEST
BRT
0
33
30
27
24
21
15
12
9
6
3
18
000
TRU
RAD 1
INS1
1234
INS2
1324
GS
Figure 1-2
EHSI Appproach Display