Overview
Designed for applications such as helicopter seaplane operations where accuracy is needed down to zero feet, the RA-4000 Radar Altimeters provide precise AGL information from 2,500 feet down to ground level.
The RA-4000 Radar Altimeter with its RS232 output can be easily coupled with electronic flight information systems (EFIS) and flight director systems. Proven and precise, both systems offer improved situational awareness for a broad range of fixed and rotary wing aircraft.
Display is compatible with the FreeFlight Systems RA-4000 Radar Altimeters. This panel-mount display provides critical AGL information to the pilot which is especially important when there are no visual clues to the landscape surrounding the airport or the flight path.
The AGL information is displayed on a bright LED read-out as reported from the RA-4000 through a standard serial interface. By simply turning the rotary knob on the front panel, the pilot is able to set a decision height (DH). When the preset altitude is reached, a DH LED is illuminated and a DH discrete output is set. The pilot is also able to activate five trip-point discrete outputs (100-1000 ft.) to signal additional alerts to the navigation management system if the aircraft descends through these altitudes. In addition to the standard version, an optional night vision goggle (NVG) compatible display is available.
Features
■ Radar Altimeter System (TSO-Certified).
■ RA-4000 consists of a remote unit and dual antennas.
■ Shipset includes RA-4000 system & RAD-40 control.
■ Provides dependable, accurate above-ground-level (AGL) information.
■ Valuable for flying search and rescue missions, forestry operations, pipeline maintenance, off shore helicopter ops, helicopter emergency medical services (HEMS), other aero-medical emergency services, border patrol, and electronic news gathering operationsSuited for a broad range of fixed & rotary wing aircraft.
■ Designed for applications such as helicopter and seaplane operations where accuracy is needed down to zero feet.
■ Provides precise AGL information from 2500 feet down to ground level.
■ Lightweight, easy to install with flexible aircraft placement.
■ Compatible with FreeFlight Systems RAD-40 Radar Altimeter Display.
■ Optional NVG compatible display.
■ Meets Precision Equipment output specification of TSO-C87 & ETSO-2C87.
■ Increased pilot safety.
■ Software zero calibration.
Specifications
| RA-4000 | |
| ALTITUDE RANGE | -20 to 2500 ft |
| POWER REQUIREMENTS | 20 - 36 VDC; 400 mA MAX @ 28 VDC |
| ENVIRONMENTAL |
-67°F to +158°F Alt: 50,000 ft |
| DIMENSIONS | 3.06"H x 3.15"W x 6.78"L |
| WEIGHT |
Unit: 1.9 lbs Ant (2): 0.37 lbs |
| TRANSMITTER POWER | 100 mW minimum out of transmitter |
| FREQUENCY |
Frequency modulated continuous wave 4.3 GHz center frequency sweep 4.25 to 4.35 GHz |
| UPDATE RATE | 25 times/sec |
| ALTITUDE ACCURACY |
0 to 100 ft ± 3 ft 100 to 500 ft ± 3% 500 to 2500 ft ± 5% |
| DISPLAY DISABLE | Strut switch inputs |
| SELF TEST | Power-on self test & recurring built-in test |
| INPUTS | Strut Switch |
| OUTPUTS | RS-485/422, RS-232C |
| FAA | TSO-C87 Precision Equipment |
| EASA | ETSO-2C87 |
| ENVIRONMENTAL | DO-160E |
| SOFTWARE | DO-178B, Level C |
| RAD-400 | |
| ALTITUDE RANGE | -99 to 9999 ft (will show -20 to +2500 ft when used w/RA-4000) |
| POWER REQUIREMENTS | 9-36 VDC; 450 mA @ 28VDC |
| ENVIRONMENTAL |
-4°F to +131°F Alt: 50,000 ft |
| DIMENSIONS | 1.39"H x 3.54"W x 4.62"L |
| WEIGHT (2) | 0.38 lbs |
| TYPE | LED, yellow seven segment |
| UPDATE RATE | 2 times/sec |
| DECISION HEIGHT SELECTION | 10-ft increments to 200 ft, 50-ft increments from 200 to 950 ft |
| FLAGS | Displays Dashes when altimeter is unlocked ("----") |
| SELF-TEST | Lights all "8's" for LEDs and activates the DH LED |
| DH ALERT | Internal DH LED and external discrete output |
| TRIP POINT OUTPUTS | Five fixed trip points: 100, 150, 200, 500 & 1000 ft |
| FAA | TSO-C87 |
| EASA | ETSO-2C87 |
| ENVIRONMENTAL | DO-160F |
| SOFTWARE | DO-178B, Level D (-0200 software version: DO-178B, Level C) |