Honeywell International Inc. DMA-37B2 Manuale Utente

Page 2008

10 Oct 2007

DMA-37B DME System

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

(2) DMA-37B DME Interrogator

(a) The DMA-37B DME Interrogator is installed in the mount as follows:

1

Slide the DMA-37B into the mount until the guide pins are aligned and the 

electrical connectors are firmly engaged.

2

Secure the front of the DMA-37B to the mount by tightening the two knurled 

screw clamps (located on the front of the mount) until they are firmly seated 

over hold-down hooks located on the front of the unit.

3

Safety-wire the two screw clamps.

(3) NAV Control Panel

(a) The selected NAV control panel must be wired according to the system interwiring 

diagram, Figure 2006, and the manufacturer's instructions. For installation 

procedure and mounting dimensions, refer to the applicable manufacturer's 

instructions.

(4) DME Display

(a) The selected DME display must be mounted in the aircraft instrument panel to 

provide easy visibility and to conform to customer requirements and the installation 

instructions of the manufacturer. Interwiring must be in accordance with 

Figure 2006, system interwiring diagram.

(5) DME Antenna

(a) Install the DME antenna in accordance with the manufacturer's instructions. 

Maximum insertion loss of the coax run from the DMA-37B to the antenna is 3 dB.

(6) Mutual Suppression

(a) In dual DMA-37B installations, mutual suppression pulse connections are required 

between units.

(b) Mutual suppression pulse connectors are also required between DMA-37B units, air 

traffic control (ATC) transponders, and Traffic Alert and Collision Avoidance System 

(TCAS).

(1) Table 2002 is a visual inspection check procedure and must be performed after system 

installation, prior to system checkout. In addition, the procedure must be used as a 

periodic inspection check.