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Absolute mode / Relative mode 

 
 

 
 
 
 
 
 
 
 
 
 

 
Absolute mode: Altitude relative to sea level (MSL) 
Relative mode: Altitude relative to some other altitude  
 
Switching between absolute and relative modes is done using the “Enter” key when you see the 
main screen.  
As you switch from absolute to relative mode you can set the current altitude as the new 
reference altitude. You do this by holding the “Enter” key down for two seconds as you switch 
from absolute to relative mode. 
Alternatively, you can set the reference altitude in the menu. This you would do if you need to set 
a reference that is not obtainable through your current flight profile. 

Setting up the ALT-2,3,4 

 
Press the Menu key to enter the menu. You can move forward and backwards in the menu by 
using the + and – keys. To change or select a menu item, move the highlight to the desired item 
and then press the Select (Enter) key. To end an edit or function, press the Menu key again. 
 
The Menu functions listed in the following section is based on the ALT-5. For ALT-3 and ALT-4 
variants, ignore the serial protocol settings. 

 
 
 
 
 
 
 
 
 
 

 
 
 
These images show the available menu 
functions. Note that the “SP:” function is 
available in the ALT-5 only. 
 
 

Reference 
altitude 

Содержание Stratomaster Maxi Single ALT-3

Страница 1: ...ve altimeter In addition it offers a wide range VSI vertical speed indicator as standard option ALT 4 and ALT 5 models include a gillman code and serial transponder interface The altimeter conforms to...

Страница 2: ...ce altitude in the menu This you would do if you need to set a reference that is not obtainable through your current flight profile Setting up the ALT 2 3 4 Press the Menu key to enter the menu You ca...

Страница 3: ...ion number that has been determined to result in the most accurate reading of your altimeter This is the value that should be entered here Should you have access to an accurate reference you may use t...

Страница 4: ...ure setting The altitude is padded with leading zeros if required to make up five digits This is followed by the letter T a the two digits 25 and a single byte checksum over all the characters in the...

Страница 5: ...setting of the instrument Note that it is possible for the first altitude to be positive and the second altitude to be negative or vice versa This is then followed by the character L and a four digit...

Страница 6: ...connection to a Microair T2000 transponder Other transponders are similar View of the encoder output connector of the ALT 4 from behind the instrument Pin 1 of the D15 connector is on the upper right...

Страница 7: ...t the most It is recommended to use shielded cable for the connection between encoding altimeter and the transponder if a long cable needs to be used The shield should be connected to ground at one po...

Страница 8: ......

Страница 9: ...vent voltage transients in excess of this limit MGL Avionics recommends the fitment of a fuse in line with a 33V transorb available from MGL Avionics at low cost to protect electronic instruments radi...

Страница 10: ...result in incorrect altitudes broadcast by your transponder Any installation involving the CNV ALT2 must be checked by a suitably equipped aircraft instrument maintenance outfit before operation Fail...

Страница 11: ...tor Static port RED marker grey ribbon cable A1 C4 A2 D4 A4 C2 C1 B1 B2 B3 ground ground ground ground ground D15 connector is available on ALT 4 only Transponder interface signals RS232 RCA connector...

Страница 12: ...ll not drop below 8V during operation as this may result in incorrect altitude readings Connect the static port to a suitable static air pressure line If you have a slow aircraft or an aircraft were t...

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