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SECTION 3
SYSTEM OPERATION
PRE-DEPARTURE
POWER ON/OFF AND PARALLAX ADJUSTMENT
1. ON Key - DEPRESS
(momentarily). The
SELF TEST Page
(Figure 3-1) will be dis-
played for approximately
30 seconds. During the
time the SELF TEST
message is displayed,
the system is performing
internal self tests. If the
system was turned OFF
last by the removal of air-
craft power, the system
will turn ON automatically when aircraft power is applied.
2. BRT Key - Adjust as required. The display will initially come on
at 75% of full bright. DEPRESS and hold the BRT Key to dim
the display. Release the BRT Key. DEPRESS and hold again to
brighten the display. To attain 100% brightness depress and hold
BRT Key again until the display no longer gets brighter.
NOTE: The display may be changed instantaneously to 75% of full
bright from any brightness level by momentarily depressing the ON
Key.
3. Parallax Adjustment - If the Line Select Keys do not align with the
line select prompts on the screen, DEPRESS the BRT Key (If the
screen begins to dim, release the BRT Key then depress again
and hold while momentarily pressing the d Key, then the P Key.
Using the U (Up) or D (Down) Key, adjust the display to the
desired alignment. DEPRESS any key when alignment is com-
plete.
4. To turn the system off, depress the ON Key and hold for three
seconds.
System Operation
3-1
GNS-XL Flight Management System
Rev. 2
Apr/00
SELF TEST
GLOBAL
HONEYWELL
INTERNATIONAL INC.
COPYRIGHT 2000
ALL RIGHTS RESERVED
Figure 3-1