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DESCRIPTION
The
Rockwell Collins DME-900 gives you unparalleled scanning performance,
while actually decreasing ground station loading. A highly efficient parallel
ranging technique allows the DME-900 to perform less than 15
interrogations per second, half the allowed average. And only two power output
devices are required to achieve a 700-watt nominal
power output. The DME-900 synthesizer/driver operates at the L-band transmit
channel frequency, significantly reducing parts count and circuit complexity. The DME-900 has been designed to provide highly accurate
distance data outputs in all modes of operation. Error sources in the interrogator
are identified and reduced to the lowest level. In addition, optimum methods
in all modes of operation reduce naturally occurring noise contained in the DME/TACAN signal. A comprehensive self-test monitor is capable of determining its operational
status to a better than 99% confidence
level. The DME-900 Receiver meets all essential level HIRF requirements,
provides improved power interrupt capability, and enhanced BITE interface
for Boeing and Airbus aircraft. | DME-900 | 822-0329-001 | DME Interrogator. 320 nautical
mile range. 252-channel capability with velocity memory. Full frequency scan
capability including digital audio ident for displayed channel. Meets all
essential level HIRF requirements. Conforms to DO-178A/DO-160C requirements.
Improved power interrupt capability. Enhanced BITE interface. Retrofits
DME-700. | Boeing747/ 757/
767/ 777 737X | | DME-900 | 822-0329-020
/ -021 | DME Interrogator. 320 nautical mile range. 252-channel capability
with velocity memory. Full frequency scan capability including digital audio
ident for displayed channel. Meets all essential level HIRF requirements.
Conforms to DO-178A/DO-160C requirements. Improved power interrupt capability.
Retrofits DME-700. Unit includes BITE software for interface with Centralized
Fault Display System (CFDS) used on Airbus aircraft. (-021 A380) | Airbus
A319/ 320/ 321/ 330/ 340 / A380 | | DME-900 | 822-0329-220 | Same as -020, except the software
is changed to provide BITE menu displays for use in the Douglas aircraft. | MD-11, MD-90 |
SPECIFICATIONS
FAA TSO | -C66a | Environmental | A2C4D1/XBA/CLY/
XXXXXXAEAEZUZKXX | RTCA Documents | DO-151A, DO-160C, DO-178A | EUROCAE | ED-57,
ED-12A, ED-14C | ARINC Char. | 604, 600, 429, 709 |
Size | 4 MCU | Width | 124 mm (4.88 in )
max | Height | 194
mm (7.64 in) max | Length | 324 mm (12.76 in)
max | Weight | 5.94
kg (13.1 lbs) max |
Temperature | -40° to
70°C operating -55° to
85°Cstorage | Altitude | 50,000
ft |
Input Power | 115 V ac, 400 Hz 30
watts maximum |
Frequency Range | 962 to 1150 MHz Transmit 962
to 1213 MHz Receive | Channel
Increments | 1 Mhz | Number of Channels | 252 | Tuning
Input | ARINC 429 dual serial bus | Distance Data Output | ARINC 429 Serial, BCD and
Binary | Receiver
Sensitivity | -90 dBw minimum | Transmitter Power | 25 dBw minimum | Range | 0
to 320 nautical miles | Accuracy (all modes) | ±0.1 nmi -20 to -80
dBm; ±0.3 nmi -80 dBm to min lock-on | Acquisition
Time | 1.0 sec, 1 SIGMA ; 1.5sec., 2 SIGMA | Dynamic Tracking | 0 to 1000 knots | Velocity
Memory | 12 seconds | Audio Output | 50 mW (adjustable to zero)
into 200 to 10,000-ohm load |
Note(s): | The DME-900 meets the accuracy required for AC-90-100.
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