Garmin Apollo CNX80, Installation Manual

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Post-Installation Configuration & Checkout
3-26 560-0982-00 Rev D Apollo CNX80 Installation Manual
6. Press the
SEL DATA
line select key and use the use the small, inner knob to select the FUEL FLOW
field for display and press
MENU/ENTER
when the appropriate field is selected. Verify that this fuel
flow value is not dashed out, and that the fuel flow agrees with the corresponding instrument.
3.3.2.4.4 Apollo MX20 Display Checkout
The CNX80 can transmit flight plan data to the MX20 (and baro-correction if the CNX80 is receiving
baro-correction from an altimeter). If the MAPMX interface is used, the MX20 can transmit baro-
correction to the CNX80. This check verifies that the units are communicating. Ensure that the CNX80
and MX20 are turned on and in normal mode. If the following steps do not perform correctly, check the
electrical connections and configuration setup.
NOTE
When connecting a CNX80 to the MX20 the preferred interface protocol is bi-directional
MAPMX. The MAPMX protocol is only supported in MX20 version 5.0 or later. If it is
desired to use a version 4.x or earlier MX20, the interface should be set to MAPCOM
(this is a uni-directional interface, and data is only provided from the CNX80 to the
MX20).
MAPCOM Interface (use only for MX20 version 4.x or earlier):
1. Check the System Info page on the MX20 to verify that the data is available to each port and that it is
being processed properly.
2. Load a flight plan into the CNX80 and verify that the flight plan is displayed on the MX20 on the FPL
page.
MAPMX Interface (use for MX20 version 5.0 or later):
1. Check the System Info page on the MX20 to verify that the data is available to the MAPMX port and
that it is being processed properly.
2. Load a flight plan into the CNX80 and verify that the flight plan is displayed on the MX20 on the FPL
page.
NOTE
If the CNX80 is configured to receive baro correction from a baro potentiometer the
CNX80 will provide baro-correction data to the MX20. If no external baro correction is
supplied to the CNX80, the MX20 will supply baro correction to the CNX80.
3. If a the CNX80 is configured for BARO POT: NOT INSTALLED, verify that the baro-correction on
the MX20 and CNX80 are the same. Change the baro-correction on the MX20 and verify that it
changes on the CNX80. The CNX80 baro-correction can be viewed on the System Configuration
page, which is accessed by pressing the
FN
key repeatedly until the
SYS
smart key is displayed. The
SYS
smart key is then pressed, followed by the
CNFG
smart key, if necessary.
3.3.2.4.5 Dual CNX80 Cross-Talk Checkout
If two CNX80’s are installed, they will share information with each other. This check verifies that the two
CNX80’s are communicating. If the following steps do not perform correctly, check the electrical
connections and configuration setup.