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ALTITUDE DISPLAY

 

 
Displays the altitude data supplied to the AT165 from the blind altitude encoder. 

PRESSURE ALT  08500ft 
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For altitudes less than –1,000ft and greater than 30,700ft bars will be displayed. 
Additionally bars will be displayed when an illegal altitude code is received. 

 
 
 

ALTITUDE HOLD 

 
HOLD MODE 
 

PRINTED IN U.S.A.                                                                                                   REV C  JANUARY 2005 

+0100ft  HLD-> 01000ft 

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Pressing 

HOLD

 will capture the Aircraft’s current altitude and use it as the 

reference for the hold function. The altitude display will now show the 
reference altitude and the deviation from that altitude in 100ft increments. If 

the deviation exceeds the BUFFER limit, the altitude display will flash. If the difference exceeds ±9900ft bars 
will be displayed. 
 
 
BUFFER SETTING 

 

LIMIT             +-0000ft 

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Pressing 

HOLD

 for greater than 2 seconds will allow setting of the 

HOLD 

BUFFER

 value. Use the Data Entry switch to set the desired 

HOLD BUFFER

 

value. The 

HOLD BUFFER

 can be set from 200ft to 2500ft in 100ft steps. 

When finished, press 

HOLD

 to save the 

HOLD BUFFER 

value. 

 

Summary of Contents for AT165 TSO

Page 1: ...NARCO AVIONICS AT165 TSO Transponder Operation Manual 03609 0621 NARCO AVIONICS INC 270 Commerce Drive Suite 200 Ft Washington PA 19034 U S A PRINTED IN U S A REV C JANUARY 2005...

Page 2: ...arco Avionics Inc to ensure accuracy in the preparation of this Operation Manual Narco assumes no responsibility for errors or omissions NARCO AVIONICS CAN BE REACHED BY CALLING 215 643 2900 FAX 215 6...

Page 3: ...or Switch The function selector is a four position rotary switch The four positions are OFF Turns off all power to the transponder SBY Turns the transponder power supply on When in SBY the transponder...

Page 4: ...ed POS Black letters on a light background NEG Light letters on a black background Once the desired Display Mode setting is achieved pressing the FUNC button will save this setting and continue to the...

Page 5: ...ressing the HOLD button for two seconds or longer will allow the setting of the Altitude Buffer The available range is 200ft to 2500ft Once set momentarily pressing HOLD again will save this buffer va...

Page 6: ...Count Down Time XXXXXXXXXXXXXXX COUNT DOWN 00 00 00 Press CRSR CLR a second time to activate the cursor Use the Code Selector Data Entry switch to set the desired Count Down Time pressing the Code Sel...

Page 7: ...t s current altitude and use it as the reference for the hold function The altitude display will now show the reference altitude and the deviation from that altitude in 100ft increments If the deviati...

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