Honeywell International Inc. DMA-37B2 사용자 설명서
Page 2003
10 Oct 2007
34-51-02
MAINTENANCE MANUAL
DMA-37B DME System
© Honeywell International Inc. Do not copy without express permission of Honeywell.
(d) When the cables are installed in the aircraft, they must be supported firmly enough
to prevent movement and must be carefully protected against chafing. Additional
protection must also be provided in all locations where the cables can be subject to
abuse. In wire bundles, the cabling must not be tied tightly together as this tends to
increase the possibility of noise pick-up and similar interference. When routing
cables through the airframe, try to avoid running cables or wire close to power
sources (400-Hz generator, etc). If unavoidable, the cables must cross high-level
lines at a right angle, or high-quality shielded conductors must be used.
(e) If a cable must pass through a bulkhead between pressurized and unpressurized
zones, this passage must conform to the aircraft manufacturer’s specifications.
(f) The assembler must be knowledgeable of any system variations peculiar to the
installation, and must thoroughly understand the complexities associated with
handling related problems of line lengths, capacitance, and of susceptibility to
interference.
(g) Table 2001 lists the determinants that are the responsibility of the installation
agency for fabrication of the wiring harness. See Figure 2006 also.
Table 2001. DMA-37B DME Interrogator Connector Determinants
Pin
Type
Signal Name
Function
MP1A
Output Audio Output (HI)
An analog output of the demodulated ground
station identification audio signal to the audio
distribution system
MP1B
Output Audio Output (LO)
MP1C
Input
SDI Bit 1
Used for encoding the location (system number)
of the DMA-37B in the aircraft; used with pins
MPID (SDI Bit 0) and MP1E (common)
MP1D
Input
SDI Bit 0
Used for encoding the location (system number)
of the DMA-37B in the aircraft; used with pins
MPIC (SDI Bit 1) and MP1E (common)
MP1E
---
SDI Common
Ground for the SDI code inputs from pins MP1C
and/or MP1D
MP1F
---
Siggest ARINC 709 Spare No. 1
---
MP1G Output DME Distance Data Output No. 1 (A)
One of two low speed ARINC 429 data output
ports to provide DME distance outputs to other
equipment on the aircraft.
Used to transmit the range words, the DME
Used to transmit the range words, the DME
ground station identification words, and to repeat
the selected frequency words if received over
the frequency tuning interfaces. Maintenance
data information will also be transmitted on these
ports.
MP1H
Output DME Distance Data Output No. 1 (B)
MP1J
---
Spare
---
MP1K
Output Siggest ARINC 709 Spare No. 2
---
MP2A
---
Spare
---
MP2B
---
Spare
---
MP2C
---
Spare
---
MP2D
---
Spare
---