GPS 155Xl/GNC 300XL Installation Manual
P/N 190-00067-22 Rev E Page 4-1
SECTION 4
POST-INSTALLATION CONFIGURATION &
CHECKOUT PROCEDURE
4.1
INTRODUCTION
NOTE:
Configuration initialization must be performed when the unit is installed or when replacing a
unit or reinstallation of the same unit in an airplane. Failure to ensure that installation
configuration is correct could cause erroneous operation.
The unit must be initialized before starting the checkout procedure. To initialize:
1.
Remove any data cards.
2.
Turn the unit on.
3.
Press enter in response to "Select operating mode Normal ok?”
4.
Press enter in response to "No Jeppesen database rte/prx limited to user wpts ok?”
5.
After the satellite status page is displayed for 5 seconds, the unit may be turned off.
After initialization, proceed with the following steps.
4.2
TEST MODE OPERATIONS
With power applied to the aviation rack and the GPS 155XL/GNC 300XL unit turned off, depress and hold the ENT
key and turn the unit on (release the ENT key when the display activates). The first page displayed is the Display
Test Page. While in TEST MODE, test pages can be selected by ensuring the flashing cursor is off and rotating the
large knob in either direction.
To change data on the displayed test page, depress the CRSR key. The cursor will highlight the standby COMM
frequency on the GNC 300XL and the configuration section for the GPS 155XL. Press cursor again to move to
configuration selections on the GNC 300XL.
The small knob will change the data on the selected field. The ENT key or the large knob will advance to the next
field on the page. Pressing the CRSR key again will remove the cursor from the current field, allowing the large
knob to select the next test page. The ENT key is used to enter a new value into the OBI data field after selecting the
desired value using the large and small knobs (see the appropriate chapter of the Pilot's Guide for more information
on page and data selection).
Note that some pages found in test mode are intended for bench testing and are not discussed here.
4.3
INSTALLATION CONFIGURATION
The following pages are in the order found when rotating the large knob clockwise starting at the Display Test Page.
See Section 4. 2 to find out how to get to this page.
