VAL Avionics NAV 2000 User's Guide download pdf (Page 20)

System Overview

2-4 SkyView Pilot’s User Guide - Revision Q

provide superior attitude accuracy. Should airspeed become unavailable due to inadvertent

pitot icing, GPS ground speed will be used as an attitude aid. You will see a GPS ASSIST

annunciation on the primary flight display when this is the case.

Compass Accuracy Effects on Synthetic Vision, Map Performance, and Autopilot

It is critical that the magnetic heading be as accurate as possible for optimal Synthetic Vision

and Moving Map performance. The ADAHRS must be installed correctly, calibrated, and

operating well in all attitudes. However, it is important to note that magnetic heading is not

used to aid attitude determination under any circumstance.

SV-EMS-22X

The engine gauges on your SkyView Engine Page are generated from the data acquired by the

SV-EMS-22X Engine Monitoring module and its sensors. This module supports popular four and

six-cylinder engine installations and can measure a variety of engine and environmental

parameters such as RPM, manifold pressure, oil temperature and pressure, exhaust gas

temperature (EGT), cylinder head temperature (CHT), fuel levels for multiple tanks, voltage,

current, fuel pressure, fuel flow, carburetor air temperature, coolant pressure and

temperature, flap and trim potentiometers, external contacts, and general purpose

temperature sensors. Two SV-EMS-22X modules can be installed to monitor either extra

CHT/EGTs for large engines or dual engines.

SV-GPS-250

The SV-GPS-250 GPS Receiver module is an optional externally mounted 5 Hz WAAS enabled

GPS receiver designed specifically for use with SkyView. It supplies GPS data in NMEA format

and automatically sets the time on SkyView.

The SV-GPS-250’s WAAS capability does not allow it to be used as a primary

navigation source in an IFR environment where a TSO’d WAAS GPS may be

required. It does mean that it utilizes the WAAS GPS satellite to improve its

positional accuracy compared to a non-WAAS enabled GPS.

SV-BAT-320 Backup Battery

The SV-BAT-320 Backup Battery is an optional backup battery for use with SkyView. It can

power a typical SkyView display and most of its connected modules for at least 60 minutes in

the event of failure of the aircraft electrical system.

Autopilot Servos

SV32, SV42, and SV52 servos enable SkyView to operate as an autopilot.

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VAL Avionics NAV 2000 User's Guide Page 20