Honeywell SPZ-8000 Maintenance Manual page 158

MAINTENANCE
Honeywell M!!!fi!i!.
The DC-884 Display Controller (DC) provides the flightcrew with a concise
method with which to control the entire electronic display system. The
controller consists of 10 lighted function keys, each with an "ON"
annunciation, and
a CRT, which, along with 10 line-select keys, provides
the medium
for menu selection. The
CRT and the function keys are
sunlight readable.
In addition to the function keys, the controller
contains three knobs which are
used to set the value of a menu parameter
(SET), set the barometric pressure (BARO), and adjust the
CRT brightness
(BRT). The display controller compares inputs from the display units and
uses the larger value to program brightness.
Course select information from the flight guidance controller is
conditioned, digitized, and routed to the symbol generators via the ASCB
bus. This information is used by the SGS to calculate left-right
deviation for display and the flight guidance computer.
The GIV
system
is configured to operate with two DCS installed in the
control panel, directly in front of each pilot, above the primary EFIS
displays. Figure 6-8 shows the layout of the display controller. Each
display controller is comprised of the following functions:
. Baro Set Control
. Menu Driven CRT Display
. Display Controller CRT Brightness Control
. 10 Menu Defined Line Select Keys
. DC Menu Parameter Set Control
. 10 Display Function Keys
- MAP Mode
- COMP Mode
- PLAN Mode
- NAV Mode
- SENSOR Mode
- FLT REF Mode
- TRS Mode
- SYSTEM Mode
- TEST Mode
- DISP Mode
The following paragraphs describe each mode controlled by the function
keys. Digital outputs transmitted on theASCB are listed in Table 6-5.
22-14-00
Page 173
Aug 15/91
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