Garmin Apollo CNX80 Installation Manual

Also see for Apollo CNX80: User Newsletter User Newsletter Supplemental Flight manual Pilot's guide Data list

Post-Installation Configuration & Checkout3-20 560-0982-00 Rev D Apollo CNX80 Installation Manual3.3.2 S YSTEM C HECKOUT – GROUND C HECKSThe CNX80 includes a self test that is executed every time the unit is turned on that checks the unitoperation as well as other internal functions. Verify that the unit does not display a failure indication whenturned on.NOTEThe CNX80 must be properly configured prior to performing system checkouts. Whenconfigured correctly, the CNX80 will annunciate failures that are detected with interfacingsystems when it is first turned on. Any annunciated failures should be corrected prior toproceeding with the ground checks.3.3.2.1 GPS Navigation CheckoutSwitch on the CNX80 in the normal mode to complete this part of the checkout – this is accomplished byeither exiting the Ground Maintenance Mode or by turning the CNX80 OFF and then turning it back ON.The CNX80 requires a “seed” position, time, and date for the GPS sensor to know which satellites to lookfor. Once this information is entered it will be saved and updated automatically, so it will not be necessaryto re-enter the information at every start-up. If the CNX80 is moved a great distance without being turnedon, the seed position may have to be re-entered.NOTEThis checkout must be completed with the aircraft moved away from hangars and otherstructures that may obstruct the view of the satellites.3.3.2.1.1 Initial Power-UpThe first time the CNX80 is used after it is installed, the GPS seed position, UTC time and date must beentered. Following the display of the main start-up screen, the screen shown in Figure 3-21 will bedisplayed for 10 seconds. Press the CHG smart key to allow the position to be edited. The latitude(degrees) will be highlighted. Use the large, outer knob to select the next or previous editable data field andturn the small, inner knob to change the current setting. When the position, UTC time and date have beenentered, press the MENU/ENTER key to accept the entries. The Master GPS Reset must be set to ‘No’.NOTEThe latitude and longitude must be within one degree of the actual position, and the UTCtime (not local time) must be within one minute. If position, time and date are not enteredcorrectly, GPS acquisition may take up to 20 minutes.