Power Input (Required); Pitot And Static Interfaces (Required/Optional); Outside Air Temp Input (Optional) - uAvionix AV-30-S Installation Manual

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8.2.1 Power Input (Required)

Power input is required and connects to the aircraft's power bus.

Input range is compatible with both 12V and 24V aircraft. Internally,

this power is diode OR'ed with the internal battery via a processor-

controlled switch. This architecture allows the unit to continue

operation if external power fluctuates or is completely lost.

Each AV-30-C must have a dedicated, properly labeled, pilot

resettable circuit breaker as part of the installation. Power for the

unit may be supplied from either the avionics bus or the main battery

master relay.

In addition to directly displayable data such as airspeed and altitude,

pitot and static inputs are utilized within the probeless Angle of

Attack algorithm and provide the underlying source for various air-

data type data overlays (TAS & DALT).

When installed as a DG, pitot and static connections are not required

unless TAS and DALT are desirable (also requires a dedicated OAT

probe). See the detailed wiring diagram for more information.

The optional outside air temperature interface requires a dedicated

external analog probe. This port connection is compatible with the

Davtron P/N C307PS (not supplied).

This is a differential two-wire current source based on the Analog

Devices AD590KH component and supplies a current that

corresponds to the ambient temperature.

The sensor reading must be trimmed during the installation process

to compensate for probe-to-probe variations.

UAV-1003947-001, AV-30-C, Installation Manual

If two displays are connected to the same probe, the current

will be split between the two and incorrect readings will be

shown by both.

Revision C

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