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 & CheckoutApollo CNX80 Installation Manual 560-0982-00 Rev D 3-27NOTEIf the CNX80 is configured to communicate with the MX20 using the MAPMX interface,turn the MX20 off when performing this checkout.1. Verify that the message “Communications lost with external CNX” is not currently active on eitherCNX.2. On CNX80 #1 and #2, view the baro correction using the Configuration page. This page is accessedby pressing the FN key twice, causing the SYS smart key to be displayed. The SYS smart key is thenpressed, followed by the CNFG smart key, if necessary. The baro correction is the first item on the list(Baro Correct.).3. Change the baro correction on CNX80 #1 and verify that it changes to the same value on CNX80 #2.Repeat by changing the baro correction on CNX80 #2 and verifying that it changes to the same valueon CNX80 #1.NOTEIf one CNX80 is configured to accept baro correction data from an altimeter, the barocorrection on the altimeter must be changed and the new value must appear on bothCNX80’s.3.3.2.4.6 Apollo SL70/SL70R Transponder CheckoutThe CNX80(s) can remotely control the SL70/SL70R. This check verifies that the units arecommunicating. Ensure that the CNX80(s) and SL70/SL70R are turned on and in normal mode. If thefollowing steps do not perform correctly, check the electrical connections and configuration setup.Single CNX80 Installation:1. Verify that the transponder squawk code is displayed in white. Press the XPDR bezel key and verifythat you are able to change the transponder squawk code on the CNX80 (turning the large, outer knobwill allow you to edit the squawk code using the small, inner knob or line select/smart keys). If anSL70 is connected, you should see the squawk code on the SL70 change to the value set on theCNX80.2. Turn off the SL70 or open the SL70R transponder circuit breaker and verify that the squawk code onthe CNX80 changes to yellow.3. Turn on the SL70 or close the SL70R transponder circuit breaker and verify that the squawk code onthe CNX80 changes back to white.Dual CNX80 Installation:1. Turn on CNX80 #1 and turn off CNX80 #2.2. Verify that the transponder squawk code is displayed in white on CNX80 #1. Press the XPDR bezelkey on CNX80 #1 and verify that you are able to change the transponder squawk code on the CNX80(turning the large, outer knob will allow you to edit the squawk code using the small, inner knob or lineselect/smart keys). If an SL70 is connected, you should see the squawk code on the SL70 change tothe value set on the CNX80.3. Turn off the SL70 or open the SL70R transponder circuit breaker and verify that the squawk code onthe CNX80 changes to yellow.4. Turn on the SL70 or close the SL70R transponder circuit breaker and verify that the squawk code onthe CNX80 changes back to white.5. Turn off CNX80 #1 and turn on CNX80 #2.