Honeywell International Inc. DMA-37B2 Manual De Usuario

Page 8

10 Oct 2007

DMA-37B DME System

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

• -1212

TSO C66c

DO-160E Environmental Category

[(A2)(D2)Z]BAB[SB]XXXXXXAA(WF)HA[R(WF)][ZW]R[RR]L[ZZZZ]XXAC

ICAO Annex 10 FM Immunity

DO-189, DO-178B

Transmitter

Frequency Range

1025.00 MHz to 1150.00 MHz, 1MHz channel spacing

Frequency Stability

± 80 kHz

Power Output

700 Watts, Typical

Pulse Code Spacing

• X-Channel

12.0 ± 0.4 microseconds

• Y-Channel

36.0 ± 0.4 microseconds

Frequency Spectrum

90% of total pulse energy within ± 0.25 MHz of channel frequency

Rise Time (maximum)

2.8 Microseconds (consistent with pulse spectrum)

CW Leakage at Antenna 

Connector

-79 dBm maximum

Antenna Mismatch

No damage to transmitter with antenna open or short circuit

Receiver

Frequency

962.00 MHz to 1213 MHz (252 Channels)

Sensitivity

-90 dBm minimum lock-on level

Selectivity

Dynamic Range

80 dB minimum

Image Rejection

60 dB minimum

CW Rejection

60 dB minimum

Audio Output

Capable of 40 milliwatts minimum into a 200-ohm to 10,000 ohm resistive load 

with -87 dBm input signal level.

Harmonic Distortion

Less than 15% with 1000 microvolts modulated 30% at 1000 Hz and less than 

20% with 90% modulation for rated audio output into a 200-ohm to 600-ohm 

resistive load

Audio Output Regulation

Less than 6-dB voltage change from a 25-milliwatt reference level into 200 

ohms for resistive load variations of 200 ohms to 10,000 ohms
Less than 0.31-dB voltage change from a 40-milliwatt level into 600-ohm 

reference for resistive load variations of 453 ohms to 2400 ohms.

Table 5. Leading Particulars (cont)

Attenuation

Bandwidth

Less than 6 dB

95 kHz

More than 50 dB

±800 kHz