Honeywell International Inc. DMA-37B2 Manuale Utente

Page 4

10 Oct 2007

DMA-37B DME System

© Honeywell International Inc. Do not copy without express permission of Honeywell.

DMA-37B DME 

Interrogator

A microprocessor-based distance measuring equipment used to 

determine the slant-range distance as measured from the aircraft to 

a selected ground-based DME transponder. Derived distance 

information is made available for visual display to the pilot, and for 

use by an automatic flight control system.
Design conforms to ARINC 809-8 and EUROCAE ED-54; digital 

guidance data output ports (binary digital distance, BCD digital 

distance, station identification and BCD channel selected) conforms 

to ARINC 429 format; two digital input ports for frequency/function 

select data input and source select capability operate in accordance 

with ARINC 429.
In addition to the automatic self-test feature, the unit contains an 

loperator-initiated self-test feature, located on the DMA-37B front 

panel, that provides a comprehensive test of all sections of the unit 

and operation of its outputs.
Complies with DO-178B software requirements and enhanced BITE 

requirements of Airbus, Boeing, and McDonnell Douglas. 
Capable of interfacing CMC in accordance with ARINC 604.
Capable of data recording and loading through the front of the unit.
Meets D0-160C lightning protection and 200 ms power interrupt 

transparency requirements.
Meets HIRF requirements and ICAO Annex 10 requirements.
Valid station identification is output for the Ident channel only, BCD 

distance is output for all foreground channels (only the Display 

Channel is valid) and output label 035 has its sign status matrix 

(SSM) set to NORMAL in the standby mode.

066-50013-0101

Same as -0101, except valid station identification is output for all 

foreground channels simultaneously (multichannel Ident), BCD 

distance is output only for the Display Channel (unless no Display 

Channel is selected) and output label 035 has its SSM set to 

no-computed-data (NCD) in the standby mode.
Capable of interfacing CFDS in accordance with ARINC 604 and 

Airbus Industrie ABDO048C.

066-50013-0202

Same as -0202 except capable of interfacing CFDS in accordance 

to McDonnell Douglas software requirements (replaces ABDO048C 

implementation).

066-50013-0303

Same as the -0101 except upgraded to DO-160E configuration. Unit 

also upgraded with variable frequency capability with harmonic 

correction for input power. Front panel consists of easy to use LED 

fault and status indicators in place of LCD display.

066-50013-1101

Same as the -0202 except upgraded to DO-160E configuration. Unit 

also upgraded with variable frequency capability with harmonic 

correction for input power. Front panel consists of easy-to-use LED 

fault and status indicators in place of LCD display. In addition, the 

ARINC 429 capability has been upgraded to have a burst mode 

capability.

066-50013-1212