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Vega ALT-5 Operating Manual

Altimeter and vertical speed indicator with a transponder compatible serial rs232 output
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Introduction
The ALT-5 is a 2 1/4" (57mm) sunlight readable encoding altimeter and a wide range vertical speed indicator.
The altimeter contains an internal high accuracy 24 bit digital altitude sensor which calculates altitude from -1500 ft up to
a maximum of +35000 ft. The ALT-5 outputs various formatted RS232 serial data protocols compatible with serial input
transponders such as that from Garmin, Magellan, Northstar, Trimble, Microair etc. The altimeter can display altitude in
feet or meters and local pressure can be set in millibars or inches of mercury
The VSI indicator can be displayed in either feet/minute (ft/min) or meters/second (m/s). The VSI can be calibrated by the
user once the instrument has been installed in the aircraft.
The ALT-5 also features a user settable altitude bug and an encoder test function. The ALT-5 provides a parallel Gillham
code interface when used in conjunction with the MGL Avionics CNV-ALT.
1 Features
•
Large 1.8" high resolution 160x128, wide viewing angle, sunlight readable, 1000 cd/m2 color LCD display
•
An internal high accuracy 24 bit digital altitude sensor calculates altitude from –1500 ft up to a maximum
of +35000 ft (-457m to 10668m)
•
The ALT-5 outputs various formatted RS232 serial data protocols compatible with serial input
transponders such as that from Garmin, Magellan, Northstar, Trimble, Microair etc.
•
Provides a parallel Gillham code interface for transponders when used in combination with the MGL
Avionics CNV-ALT
•
Built in encoder test function
•
The altimeter can display altitude in feet or meters
•
Local pressure can be set in millibars or inches of mercury
•
Contains a wide range VSI indicator from +/-20 ft/min to as high as +/-10000 ft/min
•
VSI units can be in feet/minute (ft/min) or in meters/second (m/s)
•
User settable altitude bug
•
Standard 2 1/4" (57mm) aircraft enclosure (can be front or rear mounted)
•
Rotary control plus 2 independent buttons for easy menu navigation and user input
•
Wide input supply voltage range of 8 to 30V DC
•
1 year limited warranty
Vega ALT-5
Altimeter and Vertical Speed Indicator
with a transponder compatible serial
RS232 output
Operating Manual – English 1.06

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Summary of Contents for Vega ALT-5

  • Page 1 The ALT-5 also features a user settable altitude bug and an encoder test function. The ALT-5 provides a parallel Gillham code interface when used in conjunction with the MGL Avionics CNV-ALT.

  • Page 2: Main Displays

    Local pressure can be set in either mB or in “Hg. 3 Main Displays The ALT-5 has 2 different display screens. The main display screen can be selected in the “ALT SETUP” menu. 3.1 Altitude "TAPE" Display VSI Value...

  • Page 3: Altitude Bug

    Vega ALT-5 Operating Manual Page 3 3.2 Altitude "CLASSIC" Display Altitude Value Altitude unit VSI scale indication VSI (Vertical Speed Indication) VSI Value VSI unit Local pressure readout (Either in mB or in “HG) 3.3 Altitude Bug Press the F2/Down button during the altitude “TAPE” display to access the altitude bug setting screen. Press the F1/UP key to set the altitude bug to the current altitude or use the rotary control to adjust the altitude bug.

  • Page 4: Exiting The Menu System

    Vega ALT-5 Operating Manual Page 4 4 Menu System Press the rotary control button during the normal display mode to enter the menu system. Use the rotary control to navigate through the menu system. 4.1 Exiting the menu system Press the F1/Up button to exit the menu system when the “EXIT” soft key is shown. All changes made during navigation of the menu system will be saved in non-volatile memory upon exiting.
  • Page 5 This section allows for the calibration and fine tweaking of the altitude value. Before you begin, ensure that your calibrated and certified reference is set to the local pressure of 1013.25mB (29.92”Hg). The ALT-5 altitude value in ft (referenced to 1013.25mB (29.92”Hg)) is displayed in the top right hand corner of the display.
  • Page 6 Cal Factor: On the rear of your ALT-5 instrument you will find the calibration factor that has been determined to ensure the most accurate reading of your altimeter. This is the pressure sensor offset in 0.1mB increments. Adjust your static pressure to be close to sea level pressure.
  • Page 7 Vega ALT-5 Operating Manual Page 7 justified zero padded (corrected to local pressure), L, local pressure setting in millibars,+/-, four digit VSI reading right justified zero padded in ft/min, X, checksum, carriage return The checksum is a simple modulo 256 sum of the binary values of the individual characters.
  • Page 8 RS232 output and the parallel gillham output if using a CNV-ALT converter. The ALT-5 will resume the normal output of the indicated altitude upon exiting the test function.
  • Page 9 Vega ALT-5 Operating Manual Page 9 4.3 VSI Setup (Vertical Speed Indicator Setup) VSI Display: Select if you want the VSI display to be shown on the altitude “TAPE” display. The VSI display is always shown on the altitude “CLASSIC” display.
  • Page 10 Vega ALT-5 Operating Manual Page 10 4.4 MISC Setup (Miscellaneous Setup) Backlight: Select this menu option to adjust the backlight brightness. Security Setup: Select this menu option if you want to password protect the menu system. Information: This menu option displays information about the unit.

  • Page 11: Loading Factory Default Settings

    Vega ALT-5 Operating Manual Page 11 Default Settings: Select this menu option to reset all the settings to factory defaults. 5 Loading factory default settings Press and hold the F1/Up button and rotary control during power up to load the pre- programmed factory default settings.

  • Page 12: Specifications

    10 seconds after the instrument has powered up. 9 Firmware Upgrading The ALT-5 can be upgraded in the field by connecting the RS232 port to a PC and running the firmware update program. Note that only the RS232 port can be used to upgrade the firmware.

  • Page 13: Installation

    You will need to install a suitable static port in these cases. The ALT-5 static pressure port takes 4mm ID tubing. Use hose clamps to fasten the hose onto the ALT-5 static port.

  • Page 14: Cable Connections

    Vega ALT-5 Operating Manual Page 14 10.2 Cable connections Main connector (D15HD connector: Unit Female, Cable Male) D15HD Pin Color Function 8-30Vdc power via power switch / circuit breaker and fuse. Black Ground. White/Blue RS232 Transmit data (Firmware upgrading /...
  • Page 15 Vega ALT-5 Operating Manual Page 15 11 Dimensions...

  • Page 16: Warranty

    The unit should not be cleaned with any abrasive substances. The screen is very sensitive to certain cleaning materials and should only be cleaned using a clean, damp cloth. Warning: The ALT-5 is not waterproof, serious damage could occur if the unit is exposed to water and/or spray jets.
  • Page 17 Vega ALT-5 Operating Manual Page 17 Other instruments in the Stratomaster Vega series AHRS-1 Artificial Horizon and Magnetic Compass Indicator AHRS-3 Self contained Artificial Horizon and Magnetic Compass Indicator ALT-5 Altimeter and Vertical Speed Indicator (VSI) ASI-4 Airspeed Indicator (ASI)

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