190-02207-A2
GPS 175/GNX 375/GNC 355 Part 23 AML STC Maintenance Manual
Rev. 3
Page 6-8
6.4 Display of Self-Test Data
During the normal power-up sequence, the splash screen is displayed, followed by the
SW/Databases
page, followed by the
Instrument Test
page. While on the
SW/Databases
page, touch the
Continue
button
to advance to the
Instrument Test
page. During this time, electrical outputs are activated and set to the
values listed in Table 6-1.
Table 6-1 Instrument Test Data
Parameter
Instrument Test Value
LCDI
Half Left
LFLG
Out of View
VCDI
Half Up
VFLG
Out of View
TO/FROM
N/A
OBS
The GNX displays the OBS value (149.5° if interfaced to an HSI
with driven course pointer).
DTK
149.5° (Displayed as 150°)
Items below do not display on the
Instrument Test
page.
Distance to Go
10.0 nautical miles
Time to Go
4 minutes
Active Waypoint
GARMIN
Groundspeed
150 knots
Present Position
N 39°04.05’, W 94°53.86’
Waypoint Alert
Active
Phase of Flight
En Route
Message Alert
Active
Leg/OBS Mode
Leg Mode
GPS Integrity
Invalid
Roll Steering (if applicable)
Flight Director commands 0° bank (level flight) for 5 seconds,
increasing right bank at 1°/second for 5 seconds, 5° right bank for
5 seconds, decreasing right bank at 1°/second for 5 seconds until
0° bank is reached. This cycle repeats continuously.
