Ground Checks (Normal Mode) - Garmin GPS 400W, GNC 420W Installation Manual

5.5

Ground Checks (Normal Mode)

Turn the 400W Series unit off and bring the unit back up in normal mode for the following checks.
5.5.1 Display of Self-Test Data
Following normal power-up, the Data Base Pages are displayed followed by the Instrument Panel Self-
Test Page. Pressing the ENT key once then displays the Instrument Panel Self-Test page (see Figure
5-8). During this time, the electrical outputs are activated and set to the values listed below. Press the
ENT key to acknowledge the self test page. This is not a required check, although this page can be useful
in troubleshooting installation problems.
Electronic displays which monitor the 400W Series unit's ARINC 429 output may vary
in how and where annunciations are displayed.
Parameter
Course Deviation
Glideslope/Vert. Deviation
Annunciators
Bearing to Waypoint (RMI)
Selected Course (OBS)
Desired Track
Items below are not displayed on the INSTRUMENT PANEL SELF-TEST page
Distance to Go
Time to Go
Active Waypoint
Groundspeed
Present Position
Waypoint Alert
Phase of Flight
Message Alert
Leg/OBS Mode
GPS Integrity
Roll Steering (if applicable)
400W Series Installation Manual
190-00356-02
NOTE
Self-Test Value
Half-scale left deviation, TO indication, flag pulled
Half-scale up deviation, flag pulled
All On
135°
400W Series unit displays the OBS value (149.5° if interfaced to
an HSI with driven course pointer).
149.5° (Displayed as 150°)
10.0 nautical miles
4 minutes
"GARMN"
150 knots
N 39°04.05', W 94°53.86'
Active
En Route
Active
Leg Mode
Invalid
Flight Director commands 0° bank (level flight) for 5 seconds;
commands increasing right bank at 1°/second for 5 seconds;
commands 5° right bank for 5 seconds; commands decreasing
right bank at 1°/second for 5 seconds, until command is 0° bank
again. This cycle repeats continuously.
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