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KEY OWNER/USER BENEFITS
190-1799 Khz tuning range
plus 2179 to 2185 kHz distress frequencies Interchangeable with Series 700 units Improved power interrupt Meets HIRF and Lightning requirements Enhanced BITE
OVERVIEW
Rockwell Collins ADF-900 is the latest generation of Rockwell
Collins highly successful ADF sensors. For many years the Collins sensors
have proven to be extremely reliable and cost effective. The ADF-900 contains
state-of-the-art technology, resulting in improved reliability. The ADF-900 meets ARINC-700 form,
fit and function characteristics, interfaces with other aircraft systems via
a serial ARINC 429 databus, and meets the racking and cooling requirements
of ARINC 600, and is compliant with environmental and software requirements. The ADF-900 can be retrofitted into existing aircraft and
used interchangeably with the series 700 ADF (subject to certification
approval). The ADF-900 contains partitioned, comprehensive end-to-end
self-test that will diagnose and isolate a system problem to an individual
LRU fault or a fault existing in connected peripherals (such as control panels,
antennas, etc). This improved internal test will decrease unnecessary removals. In addition to ARINC 604 BITE, which
connects with aircraft fault maintenance systems (A320/330/340/B-747-400/777/MD-11),
the ADF-900 has a simple, rugged, easy to interpret LED BITE
displays on the front panel. This allows confirmation of fault status in the
equipment bay of older design aircraft not having a fault maintenance system.
DESCRIPTION
The ADF-900 is designed to operate with an ARINC 712 antenna
such as the Rockwell Collins DFA-901. The antenna meets and exceeds
ARINC 712 specifications to ensure the highest system accuracy. Digital technology has given this system incredible reliability and
enhanced performance, and made maintenance much easier. Functions such as
signal baseband processing, audio filtering and self-test have all benefited
greatly from digital techniques. All mechanical adjustments are eliminated.
In addition, temperature and age-induced drift
errors are also eliminated with the inherent stability of digital filters. The ADF-900 Receiver meets all essential level HIRF requirements,
provides improved power interrupt capability, and enhanced BITE interface
for Boeing and Airbus aircraft. Specific ADF-900 part numbers and aircraft applicability
are listed below. | ADF-900 | 822-0299-001 | ADF Receiver. 190 - 1799 KHz tuning
range. ANT-AURAL receiver ADF-navigation, CW/MCW modes. Meets all essential
level HIRF requirements. Conforms to DO-178A/DO-160C requirements. Improved
power interrupt capability. Enhanced BITE interface. Retrofits ADF-700. | Boeing 747/ 757/ 767/ 777/ 737X | | ADF-900 | 822-0299-020 | ADF
Receiver. 190 - 1799 KHz tuning range. ANT-AURAL receiver ADF-navigation,
CW/MCW modes. Meets all essential level HIRF requirements. Conforms to DO-178A/DO-160C
requirements. Improved power interrupt capability. Enhanced BITE interface.
Retrofits ADF-700. | Airbus A319/ 320/ 321/ 330/ 340/380 | | ADF-900 | 822-0299-220 | ADF Receiver. 190 - 1799 KHz tuning
range. ANT-AURAL receiver ADF-navigation, CW/MCW modes. Meets all essential
level HIRF requirements. Conforms to DO-178A/DO-160C requirements. Improved
power interrupt capability. Enhanced BITE interface. Retrofits ADF-700. | MD-11 MD-90 | | DFA-901 | 822-5404-001 | ADF
Antenna. Combined loop and sense antenna. Mounting base curvature fits Boeing
aircraft. Black antistatic finish. No fasteners provided. Silk screened caution
note for short screw at antenna nose. | Boeing | | DFA-901 | 822-5404-003 | ADF Antenna. Combined loop and
sense antenna. Mounting base curvature fits Boeing aircraft. Black antistatic
finish. | Boeing 777 |
SPECIFICATIONS
FAA TSO | -C41d | Environmental | [[A2D2]YBA(CL)E1XXXXXZEAEZUZK | RTCA Documents | DO-179, DO-160C, DO-178A | EUROCAE | ED-51,
ED-14C | ARINC Char. | 604, 600, 429, 712 |
Size | 2 MCU | Width | 61.7mm (2.43 in )
max | Height | 200
mm (7.87 in) max | Length | 374.9 mm (14.77 in)
max | Weight | 3.402
kg (7.5 lb) max |
Temperature | -55° to
70°C operating -65° to
85°Cstorage | Altitude | 50,000
ft |
Input Power | 115 VAC, 400 Hz 0.3A |
Frequency Range | 190 to 1799 kHz plus 2179
to 2185 kHz distress frequencies | Channel
Increments | 0.5 kHz | Tuning | ARINC 429 dual serial bus | Modes | ANT - aural
receiver, ADF- navigation, CW/MCW | Bearing Accuracy | Better than 1.5° with
ARINC 712 antenna in 35-µV/m field exclusive of antenna error. (DFA-901
antenna accuracy, better than 0.4°) | Sensitivity
(with ARINC 712 antenna) | For 6 dB S+N)/N, 30µV/m (aural); for ±2° bearing
error, better than 20 µV/m (navigation) | Selectivity | 6-dB BW, 2.8 kHz; 60-dB
BW, 8 kHz maximum | Spurious | 80
dB or better | AGC | 2-dB rise, maximum 50 to
500,000 µV/m | Aural
Output | 40mW into 600 ohm load; adjustable to less than 10mW | Audio Distortion (THD) | 7.5% maximum at 30% modulation;
20% maximum at 90% modulation | Data
Output | Dual serial data bus per ARINC 429 |
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