Applicable Install Menu Settings; Altimeter Trimming - uAvionix AV-30-C Instructions For Continued Airworthiness

Rotating the knob left and right will access the various parameters
that may be configured.
Pressing the knob when the desired field is shown will allow the
associated setting to be edited. The parameter and associated setting
will be shown in magenta while the editing mode is active:
Rotating the knob left and right changes the indicated value. After
adjustment, pressing the knob again will disable the editing mode but
the Install Menu will remain active.
Pressing DONE will exit the Install Menu.

7.9.4 Applicable Install Menu Settings

The Install Menu options and settings allow for various parameters to
be set and calibrated. Parameter settings that are not associated
with ongoing maintenance (operational modes, port settings, etc.)
must not be modified and maintained in accordance with the setting
definitions within AV-30-C Installation Manual.

7.9.5 Altimeter Trimming

Connect the pitot static test set and follow applicable calibration
procedures in accordance with 4 CFR Part 91.411. Trim the
indicated altitude as required.
Once complete, exit the Install Menu and turn power off. The altitude
trim setting will be stored in internal memory.
UAV-1004045-001 AV-30-C ICA 17 Revision A