AeroVonics AV-20 Manuel utilisateur

D-0011-0, AV-20 Installation Manual

10/03/2018 Page 1 of 13 Revision B

AV-20 / AV-20-S

Multi-Function Display

Part Number U-1001-0 / U-1002-0

Installation Manual

(D-0011-0, AV-20, INSTALLATION MANUAL, REV B)

AeroVonics LLC

Albuquerque, New Mexico

D-0011-0, AV-20 Installation Manual

10/03/2018 Page 2 of 13 Revision B

Document Revisions

Revision

Date

Description of Change

Author

PDF Sig

09/20/2017

Initial Release

JDB

10/03/2018

Updated for initial NORSEE

certification, latest UI for Software

Release 1.0. Updates from FAA

Review.

JDB

Table of Contents

1System Description...................................................................................................... 3

2Model Variants & Required Interfaces ......................................................................... 4

2.1 Equipment Connections ....................................................................................... 5

2.2 Outside Air Temp Input......................................................................................... 5

2.3Audio Output........................................................................................................ 5

2.4 Manufacturing Port............................................................................................... 6

2.5 Pitot and Static Inputs .......................................................................................... 6

3Certification Basis........................................................................................................ 6

4Operating Limits .......................................................................................................... 7

5System Specifications ................................................................................................. 8

6Intended Function........................................................................................................ 8

7Installation................................................................................................................... 9

7.1 Overview.............................................................................................................. 9

7.2 Mechanical Drawing............................................................................................. 9

7.3 Wiring Diagram ...................................................................................................10

7.4 Setup...................................................................................................................11

8Calibration & Limits.....................................................................................................11

9Instructions for Continued Maintenance & Operation..................................................12

9.1 Limitations...........................................................................................................12

9.2 Internal Battery....................................................................................................12

9.3 Hard Calibration ..................................................................................................12

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1System Description

The AeroVonics AV-20 and AV-20-S Multi-Function Displays provide a wide array of

supplemental flight information.

Features Include:

•AoA Display (Voice Alerting & Peaks)

•G-Meter Display (Voice Alerting & Peaks)

•Attitude (Roll / Pitch)

•Slip / Skid

•Clock (GMT / Local)

•Outside Air Temperature (C / F)

•Bus Voltage Display

•Dual User Timers (Count Up / Down)

•Engine Run Timer

•Flight Timer

•Density Altitude Display

•True Airspeed Display (Kts / Mph)

•Internal Battery Operation

The unit incorporates a full color sunlight readable display, bezel-mounted light sensor for

automatic display brightness, and an internal battery for operation in the event of power

loss. The unit is designed to fit a standard 2¼” mounting hole and is approximately 2

inches deep. Dual ¼” quick-connect fittings are provided for pitot and static connections

on the rear of the unit.

A pre-wired wire harness is also available to simplify installation.

The AV-20-S model incorporates internal inertial sensors (gyroscopes and

accelerometers), and precision pressure sensors (pitot and static). This allows

expanded functionality over the base AV-20 model.

See the detailed functionality matrix to determine which features are available

in each model.

Unless explicitly noted, references in this manual to the AV-20 are applicable

to both configurations.

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2Model Variants & Required Interfaces

The AV-20 is available in two configurations:

•AV-20 (Part Number U-1001-0): The base model does not include internal

inertial sensors or pitot-static sensors. Functions are limited to those indicated

below.

•AV-20-S (Part Number U-1002-0): The enhanced (S)ensor model includes the

base model functions plus the inertial sensors and pitot-static sensors. Full

functionality is available in this configuration.

Feature / Model AV-20 AV-20-S Related Interfaces

Clock



OAT



OAT Probe (1)

Bus Voltage



Dual User Timers



Engine Run Timer



Flight Timer





Pitot and Static Required

AoA





Pitot and Static Required

Attitude





Pitot and Static Required

Density Alt 



Pitot and Static Required

OAT Probe

(1)

True Airspeed 



Pitot and Static Required

OAT Probe

(1)

Slip / Skid





G-Meter





Battery Operation





Audio Alerts

Timer Alert



Audio Panel Connection

(2)

AoA Alert





Audio Panel Connection

(2)

G Limit Alert





Audio Panel Connection

(2)

Notes:

(1) The OAT probe is optional. The unit will automatically detect the presence of the

sensor and enable functionality related to its use.

(2) The audio panel connection is optional. Visual alerts will be functional in all

modes of operation.

Table 1 - Functional Dependencies

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The model and part number are shown on the splash screen on

power-up, and on the system setup info page.

Note that the base AV-20 incorporates both pitot and static ports

on the rear of unit but are not utilized. This is provided for

upgrade purposes and are plugged from the factory. Do not

remove the plugs.

Do not connect Pitot and Static in the AV-20 Base model units.

Pitot and Static connections ARE required in the AV-20-S Model

for proper functionality.

2.1 Equipment Connections

All connections are provided on the single 9-Pin D-sub connector and the two

pneumatic fittings.

The unit connects to aircraft power via a normal power circuit with a dedicated 1 Amp

breaker.

2.2 Outside Air Temp Input

The outside air temperature interface requires an external analog probe. This port

connection is compatible with the Davtron probe analog probe P/N C307PS (not

supplied).This is a simple two-wire current source based on the Analog Devices

AD590KH component.

The sensor reading may be trimmed in the setup pages.

Do not tap into an existing OAT system that is in use (the probes may not

be put in parallel or series).

2.3 Audio Output

The audio panel connection is a low-voltage analog output that is designed to

connect directly to an audio panel (typically a non-switched input). High power

outputs capable of directly driving a cockpit speaker are not provided.

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2.4 Manufacturing Port

A dedicated RS-232 bi-directional serial port is provided for manufacturing test and

calibration purposes. These lines are not connected in the aircraft installation. Two

spare RS-232 connections are also not connected.

2.5 Pitot and Static Inputs

Internal pressure sensors measure both pitot and static pressure and are required for

air data base functionality, including AOA and Attitude. Industry standard ¼” quick

connect fittings are utilized. Reference the wiring diagram for details on how to

release the tubing from the fitting.

3Certification Basis

The AV-20 and AV-20-S are both FAA approved designs, are suitable for NON-

PRESSURIZED certificated aircraft and are FAA approved under NORSEE policy PS-

AIR-21.8-1602.

The AV-20-S complies with ASTM F3011 Standard Specification for Performance of

Angle of Attack System.

The AV-20 and AV-20-S are supplemental systems and may not be used as

a substitution for any required certificated aircraft system. No operational

credit may be taken for installation of the system.

The AV-20-S model is limited to installation in non-pressurized, Part 23,

Class I and II aircraft. Installation in pressurized aircraft, or other categories

of aircraft may require additional certification activities.

The AV-20 model is limited to installation in Part 23, Class I and II aircraft.

Installation in other categories of aircraft may require additional certification

activities.

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4Operating Limits

The following operational limitations are applicable:

Operating Limits

Angle of Attack Range

0° to +30°

Angle of Attack Resolution

1°

Angle of Attack Operation

+35 to +300 Knots

Angle of Attack Accuracy

2.5°

Density Alt Range (Accuracy)

-1,000 to +25,000 Feet (± 500ft)

TAS Range (Accuracy)

+35 to +300 Knots (± 20 kts)

Attitude Angle

No Limits

Attitude Rate Limit

±250 Degrees / Second

Attitude Accuracy

1° Static, 2.5° Dynamic

G Alert Limits

± 8 g

OAT Range

-40°C to +70°C

OAT Accuracy

±4°C

Slip Range (Accuracy)

±7° (±2°)

Bus Voltage Range

7 to 35 Volts

Bus Voltage Accuracy

±1.0 Volt

Clock Accuracy

± 1 Second/Day

Timer Accuracy

± 1 Second/Hour

Table 2 - Operating Limits

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5System Specifications

Electrical Attributes

Input Voltage Nominal

+10 to +32 VDC

Input Voltage Max

+60 VDC

Input Power Nominal

3 Watts (0.25Amps @ 12VDC)

Input Power Max

6 Watts (0.50 Amps @ 12VDC)

Required Circuit Breaker

1 Amp

Operation on Battery (AV-20-S)

30 Minutes (Standard 15°C Env)

Physical Attributes

Mounting Configuration

2 ¼” Round Instrument Hole

Dimensions wo/Connector

2.4 x 2.4 x 1.2 Inches

Weight

0.25 Lbs.

Electrical Connector

9 Pin Male D-Sub

Pneumatic Connectors

¼” OD Quick Connect

Mounting

(4X) #6-32 Machine Screws

Case Material

High Impact ABS Plastic

Environmental

Operating Temp

-20°C to +55°C

Storage Temp (48 Hrs)

-30°C to +80°C (Via Analysis)

Humidity (48 Hrs)

90% RH (Via Analysis)

Optical Characteristics

Diagonal Size

1.8”

Resolution

128 x 160

Contrast Ratio (Typical)

500

Brightness (Typical)

1000 cd/m2

Viewing Angle Left/Right

60°

Viewing Angle Up

45°

Viewing Angle Down

10°

Backlight Lifetime (Typical)

50,000 Hrs

Table 3 - System Specifications

6Intended Function

Reference the Pilots Guide (D-0014-0, AV-20, Pilots Guide; Intended Function Section)

for intended functionality.

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7Installation

7.1 Overview

Installation consists of the following steps:

•Remove / relocate any old instrumentation

•Add or locate an appropriate power source / breaker

•Wire power and interfaces as needed

•Mount the unit to the instrument panel with supplied screws

•Apply power and perform setup

7.2 Mechanical Drawing

Figure 1 - Mechanical Drawing

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7.3 Wiring Diagram

AIRCRAFT STATIC

SYSTEM

AV-20

QUICK CONNECT:

PUSH RELEASE RING IN

TOWARD UNIT TO RELEASE

TYP 22 AWG STRANDED WIRE

1-AMP BREAKER

DB9 Female

OAT PWR

UAT IN

RES

AC PWR

OAT IN

AUDIO +

AUDIO G

GND

RELEASE

AIRCRAFT PITOT

SYSTEM

AIRCRAFT

POWER

OPTIONAL OAT

PROBE

USE SHIELDED TWISTED PAIR IF NOISE

PRESENT IN AUDIO

GDL-90 RS-232 DISPLAY

OUTPUT

OPTIONAL UAT

RECEIVER

(PROVISIONAL)

USE SHIELDED WIRE IF REQUIRED

BY UAT INSTALLATION

OPTIONAL AUDIO

PANEL

¼ “ OD NYLON / POLYETHYLENE TUBE (OR EQ)

ANALOG1uA/K AD590KH

(Davtron or EQ)

UNSWITCHED INPUT

IMPORTANT! CONNECT PITOT AND STATIC

IN AV-20-S MODEL ONLY

**ROTATING THE PLASTIC TUBE WHILE REMOVING WILL

MINIMIZE RISK OF DAMAGING THE QUICK-CONNECT FITTING **

Figure 2 - Wiring Diagram

6 9

PITOT STATIC

Figure 3 – Unit Connections – DB-9, Male Connector – Rear View

All connections are provided on the single 9-Pin D-sub connector and the two

pneumatic fittings.

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