Honeywell International Inc. DMA-37B2 Manuale Utente
Page 9
10 Oct 2007
34-51-02
MAINTENANCE MANUAL
DMA-37B DME System
© Honeywell International Inc. Do not copy without express permission of Honeywell.
B. Environmental Certification (066-50013-0101, -0202, and -0303 only)
(1) The DMA-37B DME Interrogator meets the environmental conditions of the Radio
Technical Commission for Aeronautics (RTCA) document number D0-160C,
Environmental Conditions and Test Procedures for Airline Electronic/Electrical
Equipment and Instruments (refer to Table 6). The environmental certification categories
of the DMA-37B are /A2D2/ZCA/MNB/XXXXXXAEAEZUZ/XXE2/XX (refer to Table 6).
Audio Noise Level
Greater than 30 dB below audio reference level.
Digital Range Output
Distance available in fractional binary format and BCD format in accordance
with ARINC 709 and ARINC 429 standards.
Warning Signals
Digital warning signals provided in accordance with ARINC 709 and ARINC
429 standards
Distance Accuracy
Table 6. Environmental Certification (066-50013-0101, -0202, and -0303 only)
Test
Category
Temperature and Altitude
A2D2
In-Flight Loss of Cooling
Z
Temperature Variation
C
Humidity
A
Operational Shocks and Crash Safety
Operational Shock
Vibration
MNB
Explosion Proofness
X
Waterproofness
X
Fluids Susceptibility
X
Sand and Dust
X
Fungus Resistance
X
Salt Spray
X
Magnetic Effect
A
Power Input
E
Voltage Spike
A
Table 5. Leading Particulars (cont)
Characteristics
Description
Signal Level
Accuracy
Lock-on to -80 dBm
0.2 NM
Lock-on from -80 to -10 dB
0.1 NM