Operations if Avionics Power is Lost / SV-BAT-320 Backup Battery
11-4 SkyView HDX Pilot’s User Guide – Revision B
A battery status icon in the top bar and alert messages let you know when SkyView HDX’s
backup battery is not operating nominally. These indications are as follows:
No battery icon displayed
• No battery has been connected to this display or battery status is normal. If a battery is
connected, and no icon is displayed, all of the following are true:
o The Annual Backup Battery Test is not yet due.
o The self-test routine has not discovered abnormal behavior. Backup battery self-
tests are performed automatically every time master power is removed on the
ground (after a flight, for example) while the 30-second “power lost” timer is
counting down.
Needs test:
Figure 242 – Backup Battery Test Needed
• SkyView has determined that the backup battery should be tested using the manually-
actuated Backup Battery Test. This can be because:
o It has been one year since the last full Backup Battery Test. See the SkyView
Classic / SE / HDX System Installation Guide for instructions on how to perform
this test.
o The 30 second automatic battery self-check that is performed when master
power is removed during a normal shutdown did not complete properly at least
3 consecutive times. Perform the Backup Battery Test per the SkyView Classic /
SE / HDX System Installation Guide.
Fault/test Failed
Figure 243 – Backup Battery Test Failed
A fault has been detected because of one of the following conditions:
o The battery is no longer connected.
o A battery test has failed. The battery may need to be replaced. Contact Dynon
Avionics Technical Support for more information.
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